merge dev

CHANGELOG.md

@@ -1,7 +1,14 @@
 # Changelog
 
 ## v7.4.0 (planned on 01.09.2020)
-*Available in the `dev` branch*
+
+### New features
+- arc: add set value by click feature
+- arc: add `LV_ARC_PART_KNOB` similarly to slider
+- send gestures even is the the obejct was dragged. User can check dragging with `lv_indev_is_dragging(lv_indev_act())` in the event function. 
+- Add `lv_font_load()` function - Loads a `lv_font_t` object from a binary font file
+- Add `lv_font_free()` function - Frees the memory allocated by the `lv_font_load()` function
+- Add style caching to reduce acces time of properties with default value
 
 ## v7.3.1 (18.08.2020)
 
@@ -16,6 +23,7 @@
 - Fix crash if `lv_table_set_col_cnt` is called before `lv_table_set_row_cnt` for the first time
 - Fix overflow in large image transformations
 - Limit extra button click area of button matrix's buttons. With large paddings it was counter intuitive. (Gaps are mapped to button when clicked).
+- Fix `lv_btnmatrix_set_one_check` not forcing exactly one button to be checked
 - Fix color picker invalidation in rectangle mode
 - Init disabled days to gray color in calendar
 
@@ -26,10 +34,9 @@
 - Add `lv_event_send_refresh`, `lv_event_send_refresh_recursive` to easily send `LV_EVENT_REFRESH` to object
 - Add `lv_tabview_set_tab_name()` function - used to change a tab's name
 - Add `LV_THEME_MATERIAL_FLAG_NO_TRANSITION` and `LV_THEME_MATERIAL_FLAG_NO_FOCUS` flags
-- Reduce code size by adding: `LV_USE_FONT_COMPRESSED`, `LV_FONT_USE_SUBPX`, `LV_USE_OUTLINE`, `LV_USE_PATTERN`, `LV_USE_VALUE_STR`  and applying some optimization
+- Reduce code size by adding: `LV_USE_FONT_COMPRESSED` and `LV_FONT_USE_SUBPX` and applying some optimization
 - Add `LV_MEMCPY_MEMSET_STD` to use standard `memcpy` and `memset`
 
-
 ### Bugfixes
 - Do not print warning for missing glyph if its height OR width is zero.
 - Prevent duplicated sending of `LV_EVENT_INSERT` from text area

a.patch

@@ -0,0 +1,29 @@
+diff --git a/scripts/release.py b/scripts/release.py
+index 28370c66..bc5234e7 100755
+--- a/scripts/release.py
++++ b/scripts/release.py
+@@ -395,12 +395,12 @@ def docs_update_dev_version():
+     os.chdir("../")
+ 
+ 
+-def publish_dev():   
++def publish_dev_and_master():   
+     pub_cmd = "git checkout dev; git push origin dev"
+     cmd("cd lvgl; " + pub_cmd)    
++    pub_cmd = "git checkout master; git push origin master"
++    cmd("cd lvgl; " + pub_cmd)    
+ 
+-    pub_cmd = "git checkout dev; git push origin dev"
+-    cmd("cd docs; " + pub_cmd)    
+     cmd("cd docs; git checkout master; ./update.py latest dev")
+ 
+ def cleanup():
+@@ -463,7 +463,7 @@ if __name__ == '__main__':
+ 
+         lvgl_update_dev_version()
+         docs_update_dev_version()
+-        publish_dev()
++        publish_dev_and_master()
+         
+     cleanup()
+     

lv_conf_template.h

@@ -1,6 +1,6 @@
 /**
  * @file lv_conf.h
- * Configuration file for v7.3.1
+ * Configuration file for v7.6.0-dev-dev
  */
 
 /*
@@ -687,6 +687,9 @@ typedef void * lv_obj_user_data_t;
 #  define LV_ROLLER_INF_PAGES         7
 #endif
 
+/*Rotary (dependencies: lv_arc, lv_btn)*/
+#define LV_USE_ROTARY     1
+
 /*Slider (dependencies: lv_bar)*/
 #define LV_USE_SLIDER    1
 

lvgl.h

@@ -40,6 +40,7 @@ extern "C" {
 #include "src/lv_themes/lv_theme.h"
 
 #include "src/lv_font/lv_font.h"
+#include "src/lv_font/lv_font_loader.h"
 #include "src/lv_font/lv_font_fmt_txt.h"
 #include "src/lv_misc/lv_printf.h"
 
@@ -81,6 +82,18 @@ extern "C" {
 
 #include "src/lv_api_map.h"
 
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
 /**********************
  *      MACROS
  **********************/

src/lv_conf_internal.h

@@ -1047,6 +1047,10 @@ e.g. "stm32f769xx.h" or "stm32f429xx.h" */
 #endif
 #endif
 
+/*Rotary (dependencies: lv_arc, lv_btn)*/
+#ifndef LV_USE_ROTARY
+#define LV_USE_ROTARY    1
+#endif
 /*Slider (dependencies: lv_bar)*/
 #ifndef LV_USE_SLIDER
 #define LV_USE_SLIDER    1

src/lv_core/lv_disp.h

@@ -209,7 +209,7 @@ static inline void lv_scr_load(lv_obj_t * scr)
  * 1 dip is 2 px on a 320 DPI screen
  * https://stackoverflow.com/questions/2025282/what-is-the-difference-between-px-dip-dp-and-sp
  */
-#define LV_DPX(n)   LV_MATH_MAX((( lv_disp_get_dpi(NULL) * (n) + 80) / 160), 1) /*+80 for rounding*/
+#define LV_DPX(n)   (n == 0 ? 0 :LV_MATH_MAX((( lv_disp_get_dpi(NULL) * (n) + 80) / 160), 1)) /*+80 for rounding*/
 
 static inline lv_coord_t lv_dpx(lv_coord_t n)
 {

src/lv_core/lv_indev.c

@@ -1490,7 +1490,6 @@ static lv_obj_t * get_dragged_obj(lv_obj_t * obj)
 static void indev_gesture(lv_indev_proc_t * proc)
 {
 
-    if(proc->types.pointer.drag_in_prog) return;
     if(proc->types.pointer.gesture_sent) return;
 
     lv_obj_t * gesture_obj = proc->types.pointer.act_obj;

src/lv_core/lv_obj.c

@@ -103,7 +103,9 @@ static void lv_event_mark_deleted(lv_obj_t * obj);
 static bool obj_valid_child(const lv_obj_t * parent, const lv_obj_t * obj_to_find);
 static void lv_obj_del_async_cb(void * obj);
 static void obj_del_core(lv_obj_t * obj);
-
+static void update_style_cache(lv_obj_t * obj, uint8_t part, uint16_t prop);
+static void update_style_cache_children(lv_obj_t * obj);
+static void invalidate_style_cache(lv_obj_t * obj, uint8_t part, lv_style_property_t prop);
 /**********************
  *  STATIC VARIABLES
  **********************/
@@ -503,43 +505,11 @@ void lv_obj_invalidate_area(const lv_obj_t * obj, const lv_area_t * area)
 {
     LV_ASSERT_OBJ(obj, LV_OBJX_NAME);
 
-    if(lv_obj_get_hidden(obj)) return;
+    lv_area_t area_tmp;
+    lv_area_copy(&area_tmp, area);
+    bool visible = lv_obj_area_is_visible(obj, &area_tmp);
 
-    /*Invalidate the object only if it belongs to the curent or previous'*/
+    if(visible) _lv_inv_area(lv_obj_get_disp(obj), &area_tmp);
-    lv_obj_t * obj_scr = lv_obj_get_screen(obj);
-    lv_disp_t * disp   = lv_obj_get_disp(obj_scr);
-    if(obj_scr == lv_disp_get_scr_act(disp) ||
-       obj_scr == lv_disp_get_scr_prev(disp) ||
-       obj_scr == lv_disp_get_layer_top(disp) ||
-       obj_scr == lv_disp_get_layer_sys(disp)) {
-
-        /*Truncate the area to the object*/
-        lv_area_t obj_coords;
-        lv_coord_t ext_size = obj->ext_draw_pad;
-        lv_area_copy(&obj_coords, &obj->coords);
-        obj_coords.x1 -= ext_size;
-        obj_coords.y1 -= ext_size;
-        obj_coords.x2 += ext_size;
-        obj_coords.y2 += ext_size;
-
-        bool is_common;
-        lv_area_t area_trunc;
-
-        is_common = _lv_area_intersect(&area_trunc, area, &obj_coords);
-        if(is_common == false) return;  /*The area is not on the object*/
-
-        /*Truncate recursively to the parents*/
-        lv_obj_t * par = lv_obj_get_parent(obj);
-        while(par != NULL) {
-            is_common = _lv_area_intersect(&area_trunc, &area_trunc, &par->coords);
-            if(is_common == false) break;       /*If no common parts with parent break;*/
-            if(lv_obj_get_hidden(par)) return; /*If the parent is hidden then the child is hidden and won't be drawn*/
-
-            par = lv_obj_get_parent(par);
-        }
-
-        if(is_common) _lv_inv_area(disp, &area_trunc);
-    }
 }
 
 /**
@@ -562,6 +532,74 @@ void lv_obj_invalidate(const lv_obj_t * obj)
     lv_obj_invalidate_area(obj, &obj_coords);
 
 }
+
+/**
+ * Tell whether an area of an object is visible (even partially) now or not
+ * @param obj pointer to an object
+ * @param area the are to check. The visible part of the area will be written back here.
+ * @return true: visible; false: not visible (hidden, out of parent, on other screen, etc)
+ */
+bool lv_obj_area_is_visible(const lv_obj_t * obj, lv_area_t * area)
+{
+    if(lv_obj_get_hidden(obj)) return false;
+
+    /*Invalidate the object only if it belongs to the curent or previous'*/
+    lv_obj_t * obj_scr = lv_obj_get_screen(obj);
+    lv_disp_t * disp   = lv_obj_get_disp(obj_scr);
+    if(obj_scr == lv_disp_get_scr_act(disp) ||
+       obj_scr == lv_disp_get_scr_prev(disp) ||
+       obj_scr == lv_disp_get_layer_top(disp) ||
+       obj_scr == lv_disp_get_layer_sys(disp)) {
+
+        /*Truncate the area to the object*/
+        lv_area_t obj_coords;
+        lv_coord_t ext_size = obj->ext_draw_pad;
+        lv_area_copy(&obj_coords, &obj->coords);
+        obj_coords.x1 -= ext_size;
+        obj_coords.y1 -= ext_size;
+        obj_coords.x2 += ext_size;
+        obj_coords.y2 += ext_size;
+
+        bool is_common;
+
+        is_common = _lv_area_intersect(area, area, &obj_coords);
+        if(is_common == false) return false;  /*The area is not on the object*/
+
+        /*Truncate recursively to the parents*/
+        lv_obj_t * par = lv_obj_get_parent(obj);
+        while(par != NULL) {
+            is_common = _lv_area_intersect(area, area, &par->coords);
+            if(is_common == false) return false;       /*If no common parts with parent break;*/
+            if(lv_obj_get_hidden(par)) return false; /*If the parent is hidden then the child is hidden and won't be drawn*/
+
+            par = lv_obj_get_parent(par);
+        }
+    }
+
+    return true;
+}
+
+/**
+ * Tell whether an object is visible (even partially) now or not
+ * @param obj pointer to an object
+ * @return true: visible; false: not visible (hidden, out of parent, on other screen, etc)
+ */
+bool lv_obj_is_visible(const lv_obj_t * obj)
+{
+    LV_ASSERT_OBJ(obj, LV_OBJX_NAME);
+
+    lv_area_t obj_coords;
+    lv_coord_t ext_size = obj->ext_draw_pad;
+    lv_area_copy(&obj_coords, &obj->coords);
+    obj_coords.x1 -= ext_size;
+    obj_coords.y1 -= ext_size;
+    obj_coords.x2 += ext_size;
+    obj_coords.y2 += ext_size;
+
+    return lv_obj_area_is_visible(obj, &obj_coords);
+
+}
+
 /*=====================
  * Setter functions
  *====================*/
@@ -1120,7 +1158,7 @@ void lv_obj_add_style(lv_obj_t * obj, uint8_t part, lv_style_t * style)
 #if LV_USE_ANIMATION
     trans_del(obj, part, 0xFF, NULL);
 #endif
-    lv_obj_refresh_style(obj, LV_STYLE_PROP_ALL);
+    lv_obj_refresh_style(obj, part, LV_STYLE_PROP_ALL);
 }
 
 /**
@@ -1144,7 +1182,7 @@ void lv_obj_remove_style(lv_obj_t * obj, uint8_t part, lv_style_t * style)
 #if LV_USE_ANIMATION
     trans_del(obj, part, 0xFF, NULL);
 #endif
-    lv_obj_refresh_style(obj, LV_STYLE_PROP_ALL);
+    lv_obj_refresh_style(obj, part, LV_STYLE_PROP_ALL);
 }
 
 /**
@@ -1181,7 +1219,7 @@ void lv_obj_reset_style_list(lv_obj_t * obj, uint8_t part)
 {
     lv_obj_clean_style_list(obj, part);
 
-    lv_obj_refresh_style(obj, LV_STYLE_PROP_ALL);
+    lv_obj_refresh_style(obj, part, LV_STYLE_PROP_ALL);
 }
 
 /**
@@ -1203,7 +1241,7 @@ void _lv_obj_set_style_local_int(lv_obj_t * obj, uint8_t part, lv_style_property
 #if LV_USE_ANIMATION
     trans_del(obj, part, prop, NULL);
 #endif
-    lv_obj_refresh_style(obj, prop & (~LV_STYLE_STATE_MASK));
+    lv_obj_refresh_style(obj, part, prop & (~LV_STYLE_STATE_MASK));
 }
 
 /**
@@ -1225,7 +1263,7 @@ void _lv_obj_set_style_local_color(lv_obj_t * obj, uint8_t part, lv_style_proper
 #if LV_USE_ANIMATION
     trans_del(obj, part, prop, NULL);
 #endif
-    lv_obj_refresh_style(obj, prop & (~LV_STYLE_STATE_MASK));
+    lv_obj_refresh_style(obj, part, prop & (~LV_STYLE_STATE_MASK));
 }
 
 /**
@@ -1247,7 +1285,7 @@ void _lv_obj_set_style_local_opa(lv_obj_t * obj, uint8_t part, lv_style_property
 #if LV_USE_ANIMATION
     trans_del(obj, part, prop, NULL);
 #endif
-    lv_obj_refresh_style(obj, prop & (~LV_STYLE_STATE_MASK));
+    lv_obj_refresh_style(obj, part, prop & (~LV_STYLE_STATE_MASK));
 }
 
 /**
@@ -1269,7 +1307,7 @@ void _lv_obj_set_style_local_ptr(lv_obj_t * obj, uint8_t part, lv_style_property
 #if LV_USE_ANIMATION
     trans_del(obj, part, prop, NULL);
 #endif
-    lv_obj_refresh_style(obj, prop & (~LV_STYLE_STATE_MASK));
+    lv_obj_refresh_style(obj, part, prop & (~LV_STYLE_STATE_MASK));
 }
 
 /**
@@ -1296,10 +1334,12 @@ bool lv_obj_remove_style_local_prop(lv_obj_t * obj, uint8_t part, lv_style_prope
  * @param obj pointer to an object
  * @param prop `LV_STYLE_PROP_ALL` or an `LV_STYLE_...` property. It is used to optimize what needs to be refreshed.
  */
-void lv_obj_refresh_style(lv_obj_t * obj, lv_style_property_t prop)
+void lv_obj_refresh_style(lv_obj_t * obj, uint8_t part, lv_style_property_t prop)
 {
     LV_ASSERT_OBJ(obj, LV_OBJX_NAME);
 
+    invalidate_style_cache(obj, part, prop);
+
     /*If a real style refresh is required*/
     bool real_refr = false;
     switch(prop) {
@@ -1387,6 +1427,26 @@ void lv_obj_report_style_mod(lv_style_t * style)
     }
 }
 
+/**
+ * Enable/disable the use of style cahche for an object
+ * @param obj pointer to an object
+ * @param dis true: disable; false: enable (re-enable)
+ */
+void _lv_obj_disable_style_caching(lv_obj_t * obj, bool dis)
+{
+    uint8_t part;
+    for(part = 0; part < _LV_OBJ_PART_REAL_FIRST; part++) {
+        lv_style_list_t * list = lv_obj_get_style_list(obj, part);
+        if(list == NULL) break;
+        list->ignore_cache = dis;
+    }
+    for(part = _LV_OBJ_PART_REAL_FIRST; part < 0xFF; part++) {
+           lv_style_list_t * list = lv_obj_get_style_list(obj, part);
+           if(list == NULL) break;
+           list->ignore_cache = dis;
+       }
+}
+
 /*-----------------
  * Attribute set
  *----------------*/
@@ -1609,7 +1669,7 @@ void lv_obj_set_state(lv_obj_t * obj, lv_state_t new_state)
 
 #if LV_USE_ANIMATION == 0
     obj->state = new_state;
-    lv_obj_refresh_style(obj, LV_STYLE_PROP_ALL);
+    lv_obj_refresh_style(obj, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
 #else
     lv_state_t prev_state = obj->state;
     obj->state = new_state;
@@ -1660,10 +1720,10 @@ void lv_obj_set_state(lv_obj_t * obj, lv_state_t new_state)
 
             }
         }
+        lv_obj_refresh_style(obj, part, LV_STYLE_PROP_ALL);
     }
 #endif
 
-    lv_obj_refresh_style(obj, LV_STYLE_PROP_ALL);
 
 }
 
@@ -2449,12 +2509,74 @@ lv_style_int_t _lv_obj_get_style_int(const lv_obj_t * obj, uint8_t part, lv_styl
     lv_res_t res = LV_RES_INV;
     const lv_obj_t * parent = obj;
     while(parent) {
-        lv_style_list_t * dsc = lv_obj_get_style_list(parent, part);
+        lv_style_list_t * list = lv_obj_get_style_list(parent, part);
+        if(!list->ignore_cache && list->style_cnt > 0) {
+            if(!list->valid_cache) update_style_cache((lv_obj_t*)parent, part, prop  & (~LV_STYLE_STATE_MASK));
+
+            bool def = false;
+            switch(prop  & (~LV_STYLE_STATE_MASK)) {
+            case LV_STYLE_BG_GRAD_DIR:
+                if(list->bg_grad_dir_none) def = true;
+                break;
+            case LV_STYLE_CLIP_CORNER:
+                if(list->clip_corner_off) def = true;
+                break;
+            case LV_STYLE_TEXT_LETTER_SPACE:
+            case LV_STYLE_TEXT_LINE_SPACE:
+                if(list->text_space_zero) def = true;
+                break;
+            case LV_STYLE_TRANSFORM_ANGLE:
+            case LV_STYLE_TRANSFORM_WIDTH:
+            case LV_STYLE_TRANSFORM_HEIGHT:
+            case LV_STYLE_TRANSFORM_ZOOM:
+                if(list->transform_all_zero) def = true;
+                break;
+            case LV_STYLE_BORDER_WIDTH:
+                if(list->border_width_zero) def = true;
+                break;
+            case LV_STYLE_BORDER_SIDE:
+                if(list->border_side_full) def = true;
+                break;
+            case LV_STYLE_BORDER_POST:
+                if(list->border_post_off) def = true;
+                break;
+            case LV_STYLE_OUTLINE_WIDTH:
+                if(list->outline_width_zero) def = true;
+                break;
+            case LV_STYLE_RADIUS:
+                if(list->radius_zero) def = true;
+                break;
+            case LV_STYLE_SHADOW_WIDTH:
+                if(list->shadow_width_zero) def = true;
+                break;
+            case LV_STYLE_PAD_TOP:
+            case LV_STYLE_PAD_BOTTOM:
+            case LV_STYLE_PAD_LEFT:
+            case LV_STYLE_PAD_RIGHT:
+                if(list->pad_all_zero) def = true;
+                break;
+            case LV_STYLE_BG_BLEND_MODE:
+            case LV_STYLE_BORDER_BLEND_MODE:
+            case LV_STYLE_IMAGE_BLEND_MODE:
+            case LV_STYLE_LINE_BLEND_MODE:
+            case LV_STYLE_OUTLINE_BLEND_MODE:
+            case LV_STYLE_PATTERN_BLEND_MODE:
+            case LV_STYLE_SHADOW_BLEND_MODE:
+            case LV_STYLE_TEXT_BLEND_MODE:
+            case LV_STYLE_VALUE_BLEND_MODE:
+                if(list->blend_mode_all_normal) def = true;
+                break;
+            }
+
+            if(def) {
+                break;
+            }
+        }
 
         lv_state_t state = lv_obj_get_state(parent, part);
         prop = (uint16_t)prop_ori + ((uint16_t)state << LV_STYLE_STATE_POS);
 
-        res = _lv_style_list_get_int(dsc, prop, &value_act);
+        res = _lv_style_list_get_int(list, prop, &value_act);
         if(res == LV_RES_OK) return value_act;
 
         if(LV_STYLE_ATTR_GET_INHERIT(attr) == 0) break;
@@ -2512,12 +2634,12 @@ lv_color_t _lv_obj_get_style_color(const lv_obj_t * obj, uint8_t part, lv_style_
     lv_res_t res = LV_RES_INV;
     const lv_obj_t * parent = obj;
     while(parent) {
-        lv_style_list_t * dsc = lv_obj_get_style_list(parent, part);
+        lv_style_list_t * list = lv_obj_get_style_list(parent, part);
 
         lv_state_t state = lv_obj_get_state(parent, part);
         prop = (uint16_t)prop_ori + ((uint16_t)state << LV_STYLE_STATE_POS);
 
-        res = _lv_style_list_get_color(dsc, prop, &value_act);
+        res = _lv_style_list_get_color(list, prop, &value_act);
         if(res == LV_RES_OK) return value_act;
 
         if(LV_STYLE_ATTR_GET_INHERIT(attr) == 0) break;
@@ -2568,12 +2690,34 @@ lv_opa_t _lv_obj_get_style_opa(const lv_obj_t * obj, uint8_t part, lv_style_prop
     lv_res_t res = LV_RES_INV;
     const lv_obj_t * parent = obj;
     while(parent) {
-        lv_style_list_t * dsc = lv_obj_get_style_list(parent, part);
+        lv_style_list_t * list = lv_obj_get_style_list(parent, part);
+
+        if(!list->ignore_cache && list->style_cnt > 0) {
+            if(!list->valid_cache) update_style_cache((lv_obj_t*)parent, part, prop  & (~LV_STYLE_STATE_MASK));
+            bool def = false;
+            switch(prop & (~LV_STYLE_STATE_MASK)) {
+            case LV_STYLE_OPA_SCALE:
+                if(list->opa_scale_cover) def = true;
+                break;
+            case LV_STYLE_BG_OPA:
+                if(list->bg_opa_cover) return LV_OPA_COVER;     /*Special case, not the default value is used*/
+                if(list->bg_opa_transp) def = true;
+                break;
+            case LV_STYLE_IMAGE_RECOLOR_OPA:
+                if(list->img_recolor_opa_transp) def = true;
+                break;
+            }
+
+            if(def) {
+                break;
+            }
+        }
+
 
         lv_state_t state = lv_obj_get_state(parent, part);
         prop = (uint16_t)prop_ori + ((uint16_t)state << LV_STYLE_STATE_POS);
 
-        res = _lv_style_list_get_opa(dsc, prop, &value_act);
+        res = _lv_style_list_get_opa(list, prop, &value_act);
         if(res == LV_RES_OK) return value_act;
 
         if(LV_STYLE_ATTR_GET_INHERIT(attr) == 0) break;
@@ -2625,12 +2769,32 @@ const void * _lv_obj_get_style_ptr(const lv_obj_t * obj, uint8_t part, lv_style_
     lv_res_t res = LV_RES_INV;
     const lv_obj_t * parent = obj;
     while(parent) {
-        lv_style_list_t * dsc = lv_obj_get_style_list(parent, part);
+        lv_style_list_t * list = lv_obj_get_style_list(parent, part);
+
+        if(!list->ignore_cache && list->style_cnt > 0) {
+            if(!list->valid_cache) update_style_cache((lv_obj_t*)parent, part, prop  & (~LV_STYLE_STATE_MASK));
+            bool def = false;
+            switch(prop  & (~LV_STYLE_STATE_MASK)) {
+            case LV_STYLE_VALUE_STR:
+                if(list->value_txt_str) def = true;
+                break;
+            case LV_STYLE_PATTERN_IMAGE:
+                if(list->pattern_img_null) def = true;
+                break;
+            case LV_STYLE_TEXT_FONT:
+                if(list->text_font_normal) def = true;
+                break;
+            }
+
+            if(def) {
+                break;
+            }
+        }
 
         lv_state_t state = lv_obj_get_state(parent, part);
         prop = (uint16_t)prop_ori + ((uint16_t)state << LV_STYLE_STATE_POS);
 
-        res = _lv_style_list_get_ptr(dsc, prop, &value_act);
+        res = _lv_style_list_get_ptr(list, prop, &value_act);
         if(res == LV_RES_OK)  return value_act;
 
         if(LV_STYLE_ATTR_GET_INHERIT(attr) == 0) break;
@@ -3144,9 +3308,9 @@ void lv_obj_init_draw_rect_dsc(lv_obj_t * obj, uint8_t part, lv_draw_rect_dsc_t
         }
     }
 
-    if(draw_dsc->border_opa != LV_OPA_TRANSP) {
+    draw_dsc->border_width = lv_obj_get_style_border_width(obj, part);
-        draw_dsc->border_width = lv_obj_get_style_border_width(obj, part);
+    if(draw_dsc->border_width) {
-        if(draw_dsc->border_width) {
+        if(draw_dsc->border_opa != LV_OPA_TRANSP) {
             draw_dsc->border_opa = lv_obj_get_style_border_opa(obj, part);
             if(draw_dsc->border_opa > LV_OPA_MIN) {
                 draw_dsc->border_side = lv_obj_get_style_border_side(obj, part);
@@ -3159,9 +3323,9 @@ void lv_obj_init_draw_rect_dsc(lv_obj_t * obj, uint8_t part, lv_draw_rect_dsc_t
     }
 
 #if LV_USE_OUTLINE
-    if(draw_dsc->outline_opa != LV_OPA_TRANSP) {
+    draw_dsc->outline_width = lv_obj_get_style_outline_width(obj, part);
-        draw_dsc->outline_width = lv_obj_get_style_outline_width(obj, part);
+    if(draw_dsc->outline_width) {
-        if(draw_dsc->outline_width) {
+        if(draw_dsc->outline_opa != LV_OPA_TRANSP) {
             draw_dsc->outline_opa = lv_obj_get_style_outline_opa(obj, part);
             if(draw_dsc->outline_opa > LV_OPA_MIN) {
                 draw_dsc->outline_pad = lv_obj_get_style_outline_pad(obj, part);
@@ -3175,9 +3339,9 @@ void lv_obj_init_draw_rect_dsc(lv_obj_t * obj, uint8_t part, lv_draw_rect_dsc_t
 #endif
 
 #if LV_USE_PATTERN
-    if(draw_dsc->pattern_opa != LV_OPA_TRANSP) {
+    draw_dsc->pattern_image = lv_obj_get_style_pattern_image(obj, part);
-        draw_dsc->pattern_image = lv_obj_get_style_pattern_image(obj, part);
+    if(draw_dsc->pattern_image) {
-        if(draw_dsc->pattern_image) {
+        if(draw_dsc->pattern_opa != LV_OPA_TRANSP) {
             draw_dsc->pattern_opa = lv_obj_get_style_pattern_opa(obj, part);
             if(draw_dsc->pattern_opa > LV_OPA_MIN) {
                 draw_dsc->pattern_recolor_opa = lv_obj_get_style_pattern_recolor_opa(obj, part);
@@ -3198,9 +3362,9 @@ void lv_obj_init_draw_rect_dsc(lv_obj_t * obj, uint8_t part, lv_draw_rect_dsc_t
 #endif
 
 #if LV_USE_SHADOW
-    if(draw_dsc->shadow_opa > LV_OPA_MIN) {
+    draw_dsc->shadow_width = lv_obj_get_style_shadow_width(obj, part);
-        draw_dsc->shadow_width = lv_obj_get_style_shadow_width(obj, part);
+    if(draw_dsc->shadow_width) {
-        if(draw_dsc->shadow_width) {
+        if(draw_dsc->shadow_opa > LV_OPA_MIN) {
             draw_dsc->shadow_opa = lv_obj_get_style_shadow_opa(obj, part);
             if(draw_dsc->shadow_opa > LV_OPA_MIN) {
                 draw_dsc->shadow_ofs_x = lv_obj_get_style_shadow_ofs_x(obj, part);
@@ -3216,9 +3380,9 @@ void lv_obj_init_draw_rect_dsc(lv_obj_t * obj, uint8_t part, lv_draw_rect_dsc_t
 #endif
 
 #if LV_USE_VALUE_STR
-    if(draw_dsc->value_opa > LV_OPA_MIN) {
+    draw_dsc->value_str = lv_obj_get_style_value_str(obj, part);
-        draw_dsc->value_str = lv_obj_get_style_value_str(obj, part);
+    if(draw_dsc->value_str) {
-        if(draw_dsc->value_str) {
+        if(draw_dsc->value_opa > LV_OPA_MIN) {
             draw_dsc->value_opa = lv_obj_get_style_value_opa(obj, part);
             if(draw_dsc->value_opa > LV_OPA_MIN) {
                 draw_dsc->value_ofs_x = lv_obj_get_style_value_ofs_x(obj, part);
@@ -3308,6 +3472,9 @@ void lv_obj_init_draw_img_dsc(lv_obj_t * obj, uint8_t part, lv_draw_img_dsc_t *
 
 void lv_obj_init_draw_line_dsc(lv_obj_t * obj, uint8_t part, lv_draw_line_dsc_t * draw_dsc)
 {
+    draw_dsc->width = lv_obj_get_style_line_width(obj, part);
+    if(draw_dsc->width == 0) return;
+
     draw_dsc->opa = lv_obj_get_style_line_opa(obj, part);
     if(draw_dsc->opa <= LV_OPA_MIN)  return;
 
@@ -3319,9 +3486,6 @@ void lv_obj_init_draw_line_dsc(lv_obj_t * obj, uint8_t part, lv_draw_line_dsc_t
     if(draw_dsc->opa <= LV_OPA_MIN)  return;
 #endif
 
-    draw_dsc->width = lv_obj_get_style_line_width(obj, part);
-    if(draw_dsc->width == 0) return;
-
     draw_dsc->color = lv_obj_get_style_line_color(obj, part);
 
     draw_dsc->dash_width = lv_obj_get_style_line_dash_width(obj, part);
@@ -3817,16 +3981,16 @@ static void refresh_children_position(lv_obj_t * obj, lv_coord_t x_diff, lv_coor
  */
 static void report_style_mod_core(void * style, lv_obj_t * obj)
 {
-    uint8_t part_sub;
+    uint8_t part;
-    for(part_sub = 0; part_sub != _LV_OBJ_PART_REAL_LAST; part_sub++) {
+    for(part = 0; part != _LV_OBJ_PART_REAL_LAST; part++) {
-        lv_style_list_t * dsc = lv_obj_get_style_list(obj, part_sub);
+        lv_style_list_t * list = lv_obj_get_style_list(obj, part);
-        if(dsc == NULL) break;
+        if(list == NULL) break;
 
         uint8_t ci;
-        for(ci = 0; ci < dsc->style_cnt; ci++) {
+        for(ci = 0; ci < list->style_cnt; ci++) {
-            lv_style_t * class = lv_style_list_get_style(dsc, ci);
+            lv_style_t * class = lv_style_list_get_style(list, ci);
             if(class == style || style == NULL) {
-                lv_obj_refresh_style(obj, LV_STYLE_PROP_ALL);
+                lv_obj_refresh_style(obj, part, LV_STYLE_PROP_ALL);
                 break;
             }
         }
@@ -4207,7 +4371,7 @@ static void trans_anim_cb(lv_style_trans_t * tr, lv_anim_value_t v)
         else x = tr->end_value._ptr;
         _lv_style_set_ptr(style, tr->prop, x);
     }
-    lv_obj_refresh_style(tr->obj, tr->prop);
+    lv_obj_refresh_style(tr->obj, tr->part, tr->prop);
 
 }
 
@@ -4302,3 +4466,204 @@ static bool obj_valid_child(const lv_obj_t * parent, const lv_obj_t * obj_to_fin
 
     return false;
 }
+
+static bool style_prop_is_cacheble(lv_style_property_t prop)
+{
+
+    switch(prop) {
+    case LV_STYLE_PROP_ALL:
+    case LV_STYLE_BG_GRAD_DIR:
+    case LV_STYLE_CLIP_CORNER:
+    case LV_STYLE_TEXT_LETTER_SPACE:
+    case LV_STYLE_TEXT_LINE_SPACE:
+    case LV_STYLE_TEXT_FONT:
+    case LV_STYLE_TRANSFORM_ANGLE:
+    case LV_STYLE_TRANSFORM_WIDTH:
+    case LV_STYLE_TRANSFORM_HEIGHT:
+    case LV_STYLE_TRANSFORM_ZOOM:
+    case LV_STYLE_BORDER_WIDTH:
+    case LV_STYLE_OUTLINE_WIDTH:
+    case LV_STYLE_RADIUS:
+    case LV_STYLE_SHADOW_WIDTH:
+    case LV_STYLE_OPA_SCALE:
+    case LV_STYLE_BG_OPA:
+    case LV_STYLE_BORDER_SIDE:
+    case LV_STYLE_BORDER_POST:
+    case LV_STYLE_IMAGE_RECOLOR_OPA:
+    case LV_STYLE_VALUE_STR:
+    case LV_STYLE_PATTERN_IMAGE:
+    case LV_STYLE_PAD_TOP:
+    case LV_STYLE_PAD_BOTTOM:
+    case LV_STYLE_PAD_LEFT:
+    case LV_STYLE_PAD_RIGHT:
+    case LV_STYLE_BG_BLEND_MODE:
+    case LV_STYLE_BORDER_BLEND_MODE:
+    case LV_STYLE_IMAGE_BLEND_MODE:
+    case LV_STYLE_LINE_BLEND_MODE:
+    case LV_STYLE_OUTLINE_BLEND_MODE:
+    case LV_STYLE_PATTERN_BLEND_MODE:
+    case LV_STYLE_SHADOW_BLEND_MODE:
+    case LV_STYLE_TEXT_BLEND_MODE:
+    case LV_STYLE_VALUE_BLEND_MODE:
+        return true;
+        break;
+    default:
+        return false;
+    }
+}
+
+/**
+ * Update the cache of style list
+ * @param obj pointer to an obejct
+ * @param part the part of the object
+ * @param prop the property which triggered the update
+ */
+static void update_style_cache(lv_obj_t * obj, uint8_t part, uint16_t prop)
+{
+    if(style_prop_is_cacheble(prop) == false) return;
+
+    lv_style_list_t * list = lv_obj_get_style_list(obj, part);
+
+    bool ignore_cache_ori = list->ignore_cache;
+    list->ignore_cache = 1;
+
+#if LV_USE_OPA_SCALE
+    list->opa_scale_cover    = lv_obj_get_style_opa_scale(obj, part) == LV_OPA_COVER ? 1 : 0;
+#else
+    list->opa_scale_cover    = 1;
+#endif
+    list->text_decor_none    = lv_obj_get_style_text_decor(obj, part) == LV_TEXT_DECOR_NONE ? 1 : 0;
+    list->text_font_normal    = lv_obj_get_style_text_font(obj, part) == LV_THEME_DEFAULT_FONT_NORMAL ? 1 : 0;
+
+    list->text_space_zero = 1;
+    if(lv_obj_get_style_text_letter_space(obj, part) != 0 ||
+       lv_obj_get_style_text_line_space(obj, part) != 0) {
+        list->text_space_zero = 0;
+    }
+
+
+    lv_opa_t bg_opa = lv_obj_get_style_bg_opa(obj, part);
+    list->bg_opa_transp    = bg_opa == LV_OPA_TRANSP ? 1 : 0;
+    list->bg_opa_cover     = bg_opa == LV_OPA_COVER ? 1 : 0;
+
+    list->bg_grad_dir_none  = lv_obj_get_style_bg_grad_dir(obj, part) == LV_GRAD_DIR_NONE ? 1 : 0;
+    list->border_width_zero = lv_obj_get_style_border_width(obj, part) == 0 ? 1 : 0;
+    list->border_side_full = lv_obj_get_style_border_side(obj, part) == LV_BORDER_SIDE_FULL ? 1 : 0;
+    list->border_post_off = lv_obj_get_style_border_post(obj, part) == 0 ? 1 : 0;
+    list->clip_corner_off   = lv_obj_get_style_clip_corner(obj, part) == false ? 1 : 0;
+    list->img_recolor_opa_transp    = lv_obj_get_style_image_recolor_opa(obj, part) == LV_OPA_TRANSP ? 1 : 0;
+    list->outline_width_zero    = lv_obj_get_style_outline_width(obj, part) == 0 ? 1 : 0;
+    list->pattern_img_null    = lv_obj_get_style_pattern_image(obj, part) == NULL ? 1 : 0;
+    list->radius_zero    = lv_obj_get_style_radius(obj, part) == 0 ? 1 : 0;
+    list->shadow_width_zero    = lv_obj_get_style_shadow_width(obj, part) == 0 ? 1 : 0;
+    list->value_txt_str    = lv_obj_get_style_value_str(obj, part) == NULL ? 1 : 0;
+
+
+    list->transform_all_zero  = 1;
+    if(lv_obj_get_style_transform_angle(obj, part) != 0 ||
+       lv_obj_get_style_transform_width(obj, part) != 0 ||
+       lv_obj_get_style_transform_height(obj, part) != 0 ||
+       lv_obj_get_style_transform_zoom(obj, part) != LV_IMG_ZOOM_NONE)
+    {
+        list->transform_all_zero  = 0;
+    }
+
+    list->pad_all_zero  = 1;
+    if(lv_obj_get_style_pad_top(obj, part) != 0 ||
+        lv_obj_get_style_pad_bottom(obj, part) != 0 ||
+        lv_obj_get_style_pad_left(obj, part) != 0 ||
+        lv_obj_get_style_pad_right(obj, part) != 0)
+    {
+        list->pad_all_zero  = 0;
+    }
+
+    list->blend_mode_all_normal = 1;
+#if LV_USE_BLEND_MODES
+    if(lv_obj_get_style_bg_blend_mode(obj, part) != LV_BLEND_MODE_NORMAL ||
+            lv_obj_get_style_border_blend_mode(obj, part) != LV_BLEND_MODE_NORMAL ||
+            lv_obj_get_style_pattern_blend_mode(obj, part) != LV_BLEND_MODE_NORMAL ||
+            lv_obj_get_style_outline_blend_mode(obj, part) != LV_BLEND_MODE_NORMAL ||
+            lv_obj_get_style_value_blend_mode(obj, part) != LV_BLEND_MODE_NORMAL ||
+            lv_obj_get_style_text_blend_mode(obj, part) != LV_BLEND_MODE_NORMAL ||
+            lv_obj_get_style_line_blend_mode(obj, part) != LV_BLEND_MODE_NORMAL ||
+            lv_obj_get_style_image_blend_mode(obj, part) != LV_BLEND_MODE_NORMAL ||
+            lv_obj_get_style_shadow_blend_mode(obj, part) != LV_BLEND_MODE_NORMAL)
+    {
+        list->blend_mode_all_normal = 0;
+    }
+#endif
+    list->ignore_cache = ignore_cache_ori;
+    list->valid_cache = 1;
+}
+
+/**
+ * Update the cache of style list
+ * @param obj pointer to an object
+ * @param part the part of the object
+ */
+static void update_style_cache_children(lv_obj_t * obj)
+{
+    uint8_t part;
+    for(part = 0; part != _LV_OBJ_PART_REAL_LAST; part++) {
+        lv_style_list_t * list = lv_obj_get_style_list(obj, part);
+        if(list == NULL) break;
+
+        bool ignore_cache_ori = list->ignore_cache;
+        list->ignore_cache = 1;
+
+        list->opa_scale_cover    = lv_obj_get_style_opa_scale(obj, part) == LV_OPA_COVER ? 1 : 0;
+        list->text_decor_none    = lv_obj_get_style_text_decor(obj, part) == LV_TEXT_DECOR_NONE ? 1 : 0;
+        list->text_font_normal    = lv_obj_get_style_text_font(obj, part) == lv_theme_get_font_normal() ? 1 : 0;
+        list->img_recolor_opa_transp    = lv_obj_get_style_image_recolor_opa(obj, part) == LV_OPA_TRANSP ? 1 : 0;
+
+        list->text_space_zero = 1;
+        if(lv_obj_get_style_text_letter_space(obj, part) != 0 ||
+                lv_obj_get_style_text_line_space(obj, part) != 0) {
+            list->text_space_zero = 0;
+        }
+
+        list->ignore_cache = ignore_cache_ori;
+    }
+
+    lv_obj_t * child = lv_obj_get_child(obj, NULL);
+    while(child) {
+        update_style_cache_children(child);
+        child = lv_obj_get_child(obj, child);
+    }
+
+}
+
+/**
+ * Mark the object and all of it's children's style lists as invalid.
+ * The cache will be updated when a cached property asked nest time
+ * @param obj pointer to an object
+ */
+static void invalidate_style_cache(lv_obj_t * obj, uint8_t part, lv_style_property_t prop)
+{
+    if(style_prop_is_cacheble(prop) == false) return;
+
+    if(part != LV_OBJ_PART_ALL) {
+        lv_style_list_t * list = lv_obj_get_style_list(obj, part);
+        if(list == NULL) return;
+        list->valid_cache = 0;
+    } else {
+
+        for(part = 0; part < _LV_OBJ_PART_REAL_FIRST; part++) {
+            lv_style_list_t * list = lv_obj_get_style_list(obj, part);
+            if(list == NULL) break;
+            list->valid_cache = 0;
+        }
+        for(part = _LV_OBJ_PART_REAL_FIRST; part < 0xFF; part++) {
+               lv_style_list_t * list = lv_obj_get_style_list(obj, part);
+               if(list == NULL) break;
+               list->valid_cache = 0;
+           }
+    }
+
+    lv_obj_t * child = lv_obj_get_child(obj, NULL);
+    while(child) {
+        update_style_cache_children(child);
+        child = lv_obj_get_child(obj, child);
+    }
+}
+

src/lv_core/lv_obj.h

@@ -105,6 +105,7 @@ enum {
     LV_EVENT_APPLY,  /**< "Ok", "Apply" or similar specific button has clicked*/
     LV_EVENT_CANCEL, /**< "Close", "Cancel" or similar specific button has clicked*/
     LV_EVENT_DELETE, /**< Object is being deleted */
+    _LV_EVENT_LAST /** Number of events*/
 };
 typedef uint8_t lv_event_t; /**< Type of event being sent to the object. */
 
@@ -353,6 +354,22 @@ void lv_obj_invalidate_area(const lv_obj_t * obj, const lv_area_t * area);
  */
 void lv_obj_invalidate(const lv_obj_t * obj);
 
+
+/**
+ * Tell whether an area of an object is visible (even partially) now or not
+ * @param obj pointer to an object
+ * @param area the are to check. The visible part of the area will be written back here.
+ * @return true: visible; false: not visible (hidden, out of parent, on other screen, etc)
+ */
+bool lv_obj_area_is_visible(const lv_obj_t * obj, lv_area_t * area);
+
+/**
+ * Tell whether an object is visible (even partially) now or not
+ * @param obj pointer to an object
+ * @return true: visible; false: not visible (hidden, out of parent, on other screen, etc)
+ */
+bool lv_obj_is_visible(const lv_obj_t * obj);
+
 /*=====================
  * Setter functions
  *====================*/
@@ -586,7 +603,7 @@ void lv_obj_reset_style_list(lv_obj_t * obj, uint8_t part);
  * @param obj pointer to an object
  * @param prop `LV_STYLE_PROP_ALL` or an `LV_STYLE_...` property. It is used to optimize what needs to be refreshed.
  */
-void lv_obj_refresh_style(lv_obj_t * obj, lv_style_property_t prop);
+void lv_obj_refresh_style(lv_obj_t * obj, uint8_t part, lv_style_property_t prop);
 
 /**
  * Notify all object if a style is modified
@@ -664,6 +681,13 @@ void _lv_obj_set_style_local_ptr(lv_obj_t * obj, uint8_t type, lv_style_property
  */
 bool lv_obj_remove_style_local_prop(lv_obj_t * obj, uint8_t part, lv_style_property_t prop);
 
+/**
+ * Enable/disable the use of style cahche for an object
+ * @param obj pointer to an object
+ * @param dis true: disable; false: enable (re-enable)
+ */
+void _lv_obj_disable_style_caching(lv_obj_t * obj, bool dis);
+
 /*-----------------
  * Attribute set
  *----------------*/

src/lv_core/lv_style.c

@@ -1039,7 +1039,6 @@ bool lv_debug_check_style_list(const lv_style_list_t * list)
     return true;
 }
 
-
 /**********************
  *   STATIC FUNCTIONS
  **********************/

src/lv_core/lv_style.h

@@ -221,11 +221,37 @@ typedef struct {
 #if LV_USE_ASSERT_STYLE
     uint32_t sentinel;
 #endif
-    uint8_t style_cnt;
+    uint32_t style_cnt     :6;
-    uint8_t has_local    : 1;
+    uint32_t has_local     :1;
-    uint8_t has_trans    : 1;
+    uint32_t has_trans     :1;
-    uint8_t skip_trans   : 1;       /*1: Temporally skip the transition style if any*/
+    uint32_t skip_trans    :1;       /*1: Temporally skip the transition style if any*/
-    uint8_t ignore_trans   : 1;     /*1: Mark that this style list shouldn't receive transitions at all*/
+    uint32_t ignore_trans  :1;       /*1: Mark that this style list shouldn't receive transitions at all*/
+    uint32_t valid_cache   :1;       /*1: The cache is valid and can be used*/
+    uint32_t ignore_cache  :1;       /*1: Ignore cache while getting value of properties*/
+
+    uint32_t radius_zero :1;
+    uint32_t opa_scale_cover      :1;
+    uint32_t clip_corner_off       :1;
+    uint32_t transform_all_zero  :1;
+    uint32_t pad_all_zero :1;
+    uint32_t blend_mode_all_normal :1;
+    uint32_t bg_opa_transp :1;
+    uint32_t bg_opa_cover :1;
+    uint32_t bg_grad_dir_none :1;
+
+    uint32_t border_width_zero :1;
+    uint32_t border_side_full :1;
+    uint32_t border_post_off :1;
+
+    uint32_t outline_width_zero :1;
+    uint32_t pattern_img_null :1;
+    uint32_t shadow_width_zero :1;
+    uint32_t value_txt_str :1;
+    uint32_t img_recolor_opa_transp :1;
+
+    uint32_t text_space_zero :1;
+    uint32_t text_decor_none :1;
+    uint32_t text_font_normal :1;
 } lv_style_list_t;
 
 /**********************

src/lv_font/lv_font.mk

@@ -1,5 +1,6 @@
 CSRCS += lv_font.c
 CSRCS += lv_font_fmt_txt.c
+CSRCS += lv_font_loader.c
 CSRCS += lv_font_montserrat_12.c
 CSRCS += lv_font_montserrat_14.c
 CSRCS += lv_font_montserrat_16.c

src/lv_font/lv_font_loader.c

@@ -0,0 +1,694 @@
+/**
+ * @file lv_font_loader.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "../lvgl.h"
+#include "../lv_misc/lv_fs.h"
+#include "lv_font_loader.h"
+
+#if LV_USE_FILESYSTEM
+
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+typedef struct {
+    lv_fs_file_t * fp;
+    int8_t bit_pos;
+    uint8_t byte_value;
+} bit_iterator_t;
+
+typedef struct font_header_bin {
+    uint32_t version;
+    uint16_t tables_count;
+    uint16_t font_size;
+    uint16_t ascent;
+    int16_t descent;
+    uint16_t typo_ascent;
+    int16_t typo_descent;
+    uint16_t typo_line_gap;
+    int16_t min_y;
+    int16_t max_y;
+    uint16_t default_advance_width;
+    uint16_t kerning_scale;
+    uint8_t index_to_loc_format;
+    uint8_t glyph_id_format;
+    uint8_t advance_width_format;
+    uint8_t bits_per_pixel;
+    uint8_t xy_bits;
+    uint8_t wh_bits;
+    uint8_t advance_width_bits;
+    uint8_t compression_id;
+    uint8_t subpixels_mode;
+    uint8_t padding;
+} font_header_bin_t;
+
+typedef struct cmap_table_bin {
+    uint32_t data_offset;
+    uint32_t range_start;
+    uint16_t range_length;
+    uint16_t glyph_id_start;
+    uint16_t data_entries_count;
+    uint8_t format_type;
+    uint8_t padding;
+} cmap_table_bin_t;
+
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+static bit_iterator_t init_bit_iterator(lv_fs_file_t * fp);
+static bool lvgl_load_font(lv_fs_file_t * fp, lv_font_t * font);
+int32_t load_kern(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc, uint8_t format, uint32_t start);
+
+static int read_bits_signed(bit_iterator_t * it, int n_bits, lv_fs_res_t * res);
+static int read_bits(bit_iterator_t * it, int n_bits, lv_fs_res_t * res);
+
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Loads a `lv_font_t` object from a binary font file
+ * @param font_name filename where the font file is located
+ * @return a pointer to the font or NULL in case of error
+ */
+lv_font_t * lv_font_load(const char * font_name)
+{
+    bool success = false;
+
+    lv_font_t * font = lv_mem_alloc(sizeof(lv_font_t));
+    memset(font, 0, sizeof(lv_font_t));
+
+    lv_fs_file_t file;
+    lv_fs_res_t res = lv_fs_open(&file, font_name, LV_FS_MODE_RD);
+
+    if(res == LV_FS_RES_OK) {
+        success = lvgl_load_font(&file, font);
+    }
+
+    if(!success) {
+        LV_LOG_WARN("Error loading font file: %s\n", font_name);
+        /* 
+         * When `lvgl_load_font` fails it can leak some pointers.
+         * All non-null pointers can be assumed as allocated and
+         * `lv_font_free` should free them correctly.
+         */
+        lv_font_free(font);
+        font = NULL;
+    }
+
+    lv_fs_close(&file);
+
+    return font;
+}
+
+
+/**
+ * Frees the memory allocated by the `lv_font_load()` function
+ * @param font lv_font_t object created by the lv_font_load function
+ */
+void lv_font_free(lv_font_t * font)
+{
+    if(NULL != font) {
+        lv_font_fmt_txt_dsc_t * dsc = (lv_font_fmt_txt_dsc_t *) font->dsc;
+
+        if(NULL != dsc) {
+
+            if(dsc->kern_classes == 0) {
+                lv_font_fmt_txt_kern_pair_t * kern_dsc =
+                    (lv_font_fmt_txt_kern_pair_t *) dsc->kern_dsc;
+
+                if(NULL != kern_dsc) {
+                    if(kern_dsc->glyph_ids)
+                        lv_mem_free((void *) kern_dsc->glyph_ids);
+
+                    if(kern_dsc->values)
+                        lv_mem_free((void *) kern_dsc->values);
+
+                    lv_mem_free((void *) kern_dsc);
+                }
+            }
+            else {
+                lv_font_fmt_txt_kern_classes_t * kern_dsc =
+                    (lv_font_fmt_txt_kern_classes_t *) dsc->kern_dsc;
+
+                if(NULL != kern_dsc) {
+                    if(kern_dsc->class_pair_values)
+                        lv_mem_free((void *) kern_dsc->class_pair_values);
+
+                    if(kern_dsc->left_class_mapping)
+                        lv_mem_free((void *) kern_dsc->left_class_mapping);
+
+                    if(kern_dsc->right_class_mapping)
+                        lv_mem_free((void *) kern_dsc->right_class_mapping);
+
+                    lv_mem_free((void *) kern_dsc);
+                }
+            }
+
+            lv_font_fmt_txt_cmap_t * cmaps =
+                (lv_font_fmt_txt_cmap_t *) dsc->cmaps;
+
+            if(NULL != cmaps) {
+                for(int i = 0; i < dsc->cmap_num; ++i) {
+                    if(NULL != cmaps[i].glyph_id_ofs_list)
+                        lv_mem_free((void *) cmaps[i].glyph_id_ofs_list);
+                    if(NULL != cmaps[i].unicode_list)
+                        lv_mem_free((void *) cmaps[i].unicode_list);
+                }
+                lv_mem_free(cmaps);
+            }
+
+            if(NULL != dsc->glyph_bitmap) {
+                lv_mem_free((void *) dsc->glyph_bitmap);
+            }
+            if(NULL != dsc->glyph_dsc) {
+                lv_mem_free((void *) dsc->glyph_dsc);
+            }
+            lv_mem_free(dsc);
+        }
+        lv_mem_free(font);
+    }
+}
+
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static bit_iterator_t init_bit_iterator(lv_fs_file_t * fp)
+{
+    bit_iterator_t it;
+    it.fp = fp;
+    it.bit_pos = -1;
+    it.byte_value = 0;
+    return it;
+}
+
+static int read_bits(bit_iterator_t * it, int n_bits, lv_fs_res_t * res)
+{
+    int value = 0;
+    while(n_bits--) {
+        it->byte_value = it->byte_value << 1;
+        it->bit_pos--;
+
+        if(it->bit_pos < 0) {
+            it->bit_pos = 7;
+            *res = lv_fs_read(it->fp, &(it->byte_value), 1, NULL);
+            if(*res != LV_FS_RES_OK) {
+                return -1;
+            }
+        }
+        int8_t bit = (it->byte_value & 0x80) ? 1 : 0;
+
+        value |= (bit << n_bits);
+    }
+    *res = LV_FS_RES_OK;
+    return value;
+}
+
+static int read_bits_signed(bit_iterator_t * it, int n_bits, lv_fs_res_t * res)
+{
+    int value = read_bits(it, n_bits, res);
+    if(value & (1 << (n_bits - 1))) {
+        for(int bit = n_bits; bit < 8; ++bit) {
+            value |= (1 << bit);
+        }
+    }
+    return value;
+}
+
+static int read_label(lv_fs_file_t * fp, int start, const char * label)
+{
+    lv_fs_seek(fp, start);
+
+    uint32_t length;
+    char buf[4];
+
+    if(lv_fs_read(fp, &length, 4, NULL) != LV_FS_RES_OK
+       || lv_fs_read(fp, buf, 4, NULL) != LV_FS_RES_OK
+       || memcmp(label, buf, 4) != 0) {
+        LV_LOG_WARN("Error reading '%s' label.", label);
+        return -1;
+    }
+
+    return length;
+}
+
+static bool load_cmaps_tables(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc,
+                              uint32_t cmaps_start, cmap_table_bin_t * cmap_table)
+{
+    for(unsigned int i = 0; i < font_dsc->cmap_num; ++i) {
+        if(lv_fs_read(fp, &cmap_table[i], sizeof(cmap_table_bin_t), NULL) != LV_FS_RES_OK) {
+            return false;
+        }
+
+        lv_font_fmt_txt_cmap_t * cmap = (lv_font_fmt_txt_cmap_t *) & (font_dsc->cmaps[i]);
+
+        cmap->range_start = cmap_table[i].range_start;
+        cmap->range_length = cmap_table[i].range_length;
+        cmap->glyph_id_start = cmap_table[i].glyph_id_start;
+    }
+
+    for(unsigned int i = 0; i < font_dsc->cmap_num; ++i) {
+        lv_fs_res_t res = lv_fs_seek(fp, cmaps_start + cmap_table[i].data_offset);
+        if(res != LV_FS_RES_OK) {
+            return false;
+        }
+
+        lv_font_fmt_txt_cmap_t * cmap = (lv_font_fmt_txt_cmap_t *) & (font_dsc->cmaps[i]);
+
+        switch(cmap_table[i].format_type) {
+            case 0: {
+                    uint8_t ids_size = sizeof(uint8_t) * cmap_table[i].data_entries_count;
+                    uint8_t * glyph_id_ofs_list = lv_mem_alloc(ids_size);
+
+                    cmap->glyph_id_ofs_list = glyph_id_ofs_list;
+
+                    if(lv_fs_read(fp, glyph_id_ofs_list, ids_size, NULL) != LV_FS_RES_OK) {
+                        return false;
+                    }
+
+                    cmap->type = LV_FONT_FMT_TXT_CMAP_FORMAT0_FULL;
+                    cmap->list_length = cmap->range_length;
+                    cmap->unicode_list = NULL;
+                    break;
+                }
+            case 2:
+                cmap->type = LV_FONT_FMT_TXT_CMAP_FORMAT0_TINY;
+                cmap->list_length = 0;
+                cmap->unicode_list = NULL;
+                cmap->glyph_id_ofs_list = NULL;
+                break;
+            case 1:
+            case 3: {
+                    uint32_t list_size = sizeof(uint16_t) * cmap_table[i].data_entries_count;
+                    uint16_t * unicode_list = (uint16_t *) lv_mem_alloc(list_size);
+
+                    cmap->unicode_list = unicode_list;
+                    cmap->list_length = cmap_table[i].data_entries_count;
+
+                    if(lv_fs_read(fp, unicode_list, list_size, NULL) != LV_FS_RES_OK) {
+                        return false;
+                    }
+
+                    if(cmap_table[i].format_type == 1) {
+                        uint16_t * buf = lv_mem_alloc(sizeof(uint16_t) * cmap->list_length);
+
+                        cmap->type = LV_FONT_FMT_TXT_CMAP_SPARSE_FULL;
+                        cmap->glyph_id_ofs_list = buf;
+
+                        if(lv_fs_read(fp, buf, sizeof(uint16_t) * cmap->list_length, NULL) != LV_FS_RES_OK) {
+                            return false;
+                        }
+                    }
+                    else {
+                        cmap->type = LV_FONT_FMT_TXT_CMAP_SPARSE_TINY;
+                        cmap->glyph_id_ofs_list = NULL;
+                    }
+                    break;
+                }
+            default:
+                LV_LOG_WARN("Unknown cmaps format type %d.", cmap_table[i].format_type);
+                return false;
+        }
+    }
+    return true;
+}
+
+static int32_t load_cmaps(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc, uint32_t cmaps_start)
+{
+    int32_t cmaps_length = read_label(fp, cmaps_start, "cmap");
+    if(cmaps_length < 0) {
+        return -1;
+    }
+
+    uint32_t cmaps_subtables_count;
+    if(lv_fs_read(fp, &cmaps_subtables_count, sizeof(uint32_t), NULL) != LV_FS_RES_OK) {
+        return -1;
+    }
+
+    lv_font_fmt_txt_cmap_t * cmaps =
+        lv_mem_alloc(cmaps_subtables_count * sizeof(lv_font_fmt_txt_cmap_t));
+
+    memset(cmaps, 0, cmaps_subtables_count * sizeof(lv_font_fmt_txt_cmap_t));
+
+    font_dsc->cmaps = cmaps;
+    font_dsc->cmap_num = cmaps_subtables_count;
+
+    cmap_table_bin_t * cmaps_tables = lv_mem_alloc(sizeof(cmap_table_bin_t) * font_dsc->cmap_num);
+
+    bool success = load_cmaps_tables(fp, font_dsc, cmaps_start, cmaps_tables);
+
+    lv_mem_free(cmaps_tables);
+
+    return success ? cmaps_length : -1;
+}
+
+static int32_t load_glyph(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc,
+                          uint32_t start, uint32_t * glyph_offset, uint32_t loca_count, font_header_bin_t * header)
+{
+    int32_t glyph_length = read_label(fp, start, "glyf");
+    if(glyph_length < 0) {
+        return -1;
+    }
+
+    lv_font_fmt_txt_glyph_dsc_t * glyph_dsc = (lv_font_fmt_txt_glyph_dsc_t *)
+                                              lv_mem_alloc(loca_count * sizeof(lv_font_fmt_txt_glyph_dsc_t));
+
+    memset(glyph_dsc, 0, loca_count * sizeof(lv_font_fmt_txt_glyph_dsc_t));
+
+    font_dsc->glyph_dsc = glyph_dsc;
+
+    int cur_bmp_size = 0;
+
+    for(unsigned int i = 0; i < loca_count; ++i) {
+        lv_font_fmt_txt_glyph_dsc_t * gdsc = &glyph_dsc[i];
+
+        lv_fs_res_t res = lv_fs_seek(fp, start + glyph_offset[i]);
+        if(res != LV_FS_RES_OK) {
+            return -1;
+        }
+
+        bit_iterator_t bit_it = init_bit_iterator(fp);
+
+        if(header->advance_width_bits == 0) {
+            gdsc->adv_w = header->default_advance_width;
+        }
+        else {
+            gdsc->adv_w = read_bits(&bit_it, header->advance_width_bits, &res);
+            if(res != LV_FS_RES_OK) {
+                return -1;
+            }
+        }
+
+        if(header->advance_width_format == 0) {
+            gdsc->adv_w *= 16;
+        }
+
+        gdsc->ofs_x = read_bits_signed(&bit_it, header->xy_bits, &res);
+        if(res != LV_FS_RES_OK) {
+            return -1;
+        }
+
+        gdsc->ofs_y = read_bits_signed(&bit_it, header->xy_bits, &res);
+        if(res != LV_FS_RES_OK) {
+            return -1;
+        }
+
+        gdsc->box_w = read_bits(&bit_it, header->wh_bits, &res);
+        if(res != LV_FS_RES_OK) {
+            return -1;
+        }
+
+        gdsc->box_h = read_bits(&bit_it, header->wh_bits, &res);
+        if(res != LV_FS_RES_OK) {
+            return -1;
+        }
+
+        int nbits = header->advance_width_bits + 2 * header->xy_bits + 2 * header->wh_bits;
+        int next_offset = (i < loca_count - 1) ? glyph_offset[i + 1] : (uint32_t)(glyph_length - 1);
+        int bmp_size = next_offset - glyph_offset[i] - nbits / 8;
+
+        if(i == 0) {
+            gdsc->adv_w = 0;
+            gdsc->box_w = 0;
+            gdsc->box_h = 0;
+            gdsc->ofs_x = 0;
+            gdsc->ofs_y = 0;
+        }
+
+        gdsc->bitmap_index = cur_bmp_size;
+        if(gdsc->box_w * gdsc->box_h != 0) {
+            cur_bmp_size += bmp_size;
+        }
+    }
+
+    uint8_t * glyph_bmp = (uint8_t *) lv_mem_alloc(sizeof(uint8_t) * cur_bmp_size);
+
+    font_dsc->glyph_bitmap = glyph_bmp;
+
+    cur_bmp_size = 0;
+
+    for(unsigned int i = 1; i < loca_count; ++i) {
+        lv_fs_res_t res = lv_fs_seek(fp, start + glyph_offset[i]);
+        if(res != LV_FS_RES_OK) {
+            return -1;
+        }
+        bit_iterator_t bit_it = init_bit_iterator(fp);
+
+        int nbits = header->advance_width_bits + 2 * header->xy_bits + 2 * header->wh_bits;
+
+        read_bits(&bit_it, nbits, &res);
+        if(res != LV_FS_RES_OK) {
+            return -1;
+        }
+
+        if(glyph_dsc[i].box_w * glyph_dsc[i].box_h == 0) {
+            continue;
+        }
+
+        int next_offset = (i < loca_count - 1) ? glyph_offset[i + 1] : (uint32_t)(glyph_length - 1);
+        int bmp_size = next_offset - glyph_offset[i] - nbits / 8;
+
+        for(int k = 0; k < bmp_size; ++k) {
+            glyph_bmp[cur_bmp_size + k] = read_bits(&bit_it, 8, &res);
+            if(res != LV_FS_RES_OK) {
+                return -1;
+            }
+        }
+        cur_bmp_size += bmp_size;
+    }
+    return glyph_length;
+}
+
+/*
+ * Loads a `lv_font_t` from a binary file, given a `lv_fs_file_t`.
+ *
+ * Memory allocations on `lvgl_load_font` should be immediately zeroed and
+ * the pointer should be set on the `lv_font_t` data before any possible return.
+ *
+ * When something fails, it returns `false` and the memory on the `lv_font_t`
+ * still needs to be freed using `lv_font_free`.
+ *
+ * `lv_font_free` will assume that all non-null pointers are allocated and
+ * should be freed.
+ */
+static bool lvgl_load_font(lv_fs_file_t * fp, lv_font_t * font)
+{
+    lv_font_fmt_txt_dsc_t * font_dsc = (lv_font_fmt_txt_dsc_t *)
+                                       lv_mem_alloc(sizeof(lv_font_fmt_txt_dsc_t));
+
+    memset(font_dsc, 0, sizeof(lv_font_fmt_txt_dsc_t));
+
+    font->dsc = font_dsc;
+
+    /* header */
+    int32_t header_length = read_label(fp, 0, "head");
+    if(header_length < 0) {
+        return false;
+    }
+
+    font_header_bin_t font_header;
+    if(lv_fs_read(fp, &font_header, sizeof(font_header_bin_t), NULL) != LV_FS_RES_OK) {
+        return false;
+    }
+
+    font->base_line = -font_header.descent;
+    font->line_height = font_header.ascent - font_header.descent;
+    font->get_glyph_dsc = lv_font_get_glyph_dsc_fmt_txt;
+    font->get_glyph_bitmap = lv_font_get_bitmap_fmt_txt;
+    font->subpx = LV_FONT_SUBPX_NONE;
+
+    font_dsc->bpp = font_header.bits_per_pixel;
+    font_dsc->kern_scale = font_header.kerning_scale;
+    font_dsc->bitmap_format = font_header.compression_id;
+
+    /* cmaps */
+    uint32_t cmaps_start = header_length;
+    int32_t cmaps_length = load_cmaps(fp, font_dsc, cmaps_start);
+    if(cmaps_length < 0) {
+        return false;
+    }
+
+    /* loca */
+    uint32_t loca_start = cmaps_start + cmaps_length;
+    int32_t loca_length = read_label(fp, loca_start, "loca");
+    if(loca_length < 0) {
+        return false;
+    }
+
+    uint32_t loca_count;
+    if(lv_fs_read(fp, &loca_count, sizeof(uint32_t), NULL) != LV_FS_RES_OK) {
+        return false;
+    }
+
+    bool failed = false;
+    uint32_t * glyph_offset = lv_mem_alloc(sizeof(uint32_t) * (loca_count + 1));
+
+    for(unsigned int i = 0; i < loca_count; ++i) {
+        if(font_header.index_to_loc_format == 0) {
+            uint16_t offset;
+            if(lv_fs_read(fp, &offset, sizeof(uint16_t), NULL) != LV_FS_RES_OK) {
+                failed = true;
+                break;
+            }
+            glyph_offset[i] = offset;
+        }
+        else if(font_header.index_to_loc_format == 1) {
+            uint32_t offset;
+            if(lv_fs_read(fp, &offset, sizeof(uint32_t), NULL) != LV_FS_RES_OK) {
+                failed = true;
+                break;
+            }
+            glyph_offset[i] = offset;
+        }
+        else {
+            LV_LOG_WARN("Unknown index_to_loc_format: %d.", font_header.index_to_loc_format);
+            failed = true;
+            break;
+        }
+    }
+
+    if(failed) {
+        lv_mem_free(glyph_offset);
+        return false;
+    }
+
+    /* glyph */
+    uint32_t glyph_start = loca_start + loca_length;
+    int32_t glyph_length = load_glyph(
+                               fp, font_dsc, glyph_start, glyph_offset, loca_count, &font_header);
+
+    lv_mem_free(glyph_offset);
+
+    if(glyph_length < 0) {
+        return false;
+    }
+
+    if(font_header.tables_count < 4) {
+        font_dsc->kern_dsc = NULL;
+        font_dsc->kern_classes = 0;
+        font_dsc->kern_scale = 0;
+        return true;
+    }
+
+    uint32_t kern_start = glyph_start + glyph_length;
+
+    int32_t kern_length = load_kern(fp, font_dsc, font_header.glyph_id_format, kern_start);
+
+    return kern_length >= 0;
+}
+
+int32_t load_kern(lv_fs_file_t * fp, lv_font_fmt_txt_dsc_t * font_dsc, uint8_t format, uint32_t start)
+{
+    int32_t kern_length = read_label(fp, start, "kern");
+    if(kern_length < 0) {
+        return -1;
+    }
+
+    uint8_t kern_format_type;
+    int32_t padding;
+    if(lv_fs_read(fp, &kern_format_type, sizeof(uint8_t), NULL) != LV_FS_RES_OK ||
+       lv_fs_read(fp, &padding, 3 * sizeof(uint8_t), NULL) != LV_FS_RES_OK) {
+        return -1;
+    }
+
+    if(0 == kern_format_type) { /* sorted pairs */
+        lv_font_fmt_txt_kern_pair_t * kern_pair = lv_mem_alloc(sizeof(lv_font_fmt_txt_kern_pair_t));
+
+        memset(kern_pair, 0, sizeof(lv_font_fmt_txt_kern_pair_t));
+
+        font_dsc->kern_dsc = kern_pair;
+        font_dsc->kern_classes = 0;
+
+        uint32_t glyph_entries;
+        if(lv_fs_read(fp, &glyph_entries, sizeof(uint32_t), NULL) != LV_FS_RES_OK) {
+            return -1;
+        }
+
+        int ids_size;
+        if(format == 0) {
+            ids_size = sizeof(int8_t) * 2 * glyph_entries;
+        }
+        else {
+            ids_size = sizeof(int16_t) * 2 * glyph_entries;
+        }
+
+        uint8_t * glyph_ids = lv_mem_alloc(ids_size);
+        int8_t * values = lv_mem_alloc(glyph_entries);
+
+        kern_pair->glyph_ids_size = format;
+        kern_pair->pair_cnt = glyph_entries;
+        kern_pair->glyph_ids = glyph_ids;
+        kern_pair->values = values;
+
+        if(lv_fs_read(fp, glyph_ids, ids_size, NULL) != LV_FS_RES_OK) {
+            return -1;
+        }
+
+        if(lv_fs_read(fp, values, glyph_entries, NULL) != LV_FS_RES_OK) {
+            return -1;
+        }
+    }
+    else if(3 == kern_format_type) { /* array M*N of classes */
+
+        lv_font_fmt_txt_kern_classes_t * kern_classes = lv_mem_alloc(sizeof(lv_font_fmt_txt_kern_classes_t));
+
+        memset(kern_classes, 0, sizeof(lv_font_fmt_txt_kern_classes_t));
+
+        font_dsc->kern_dsc = kern_classes;
+        font_dsc->kern_classes = 1;
+
+        uint16_t kern_class_mapping_length;
+        uint8_t kern_table_rows;
+        uint8_t kern_table_cols;
+
+        if(lv_fs_read(fp, &kern_class_mapping_length, sizeof(uint16_t), NULL) != LV_FS_RES_OK ||
+           lv_fs_read(fp, &kern_table_rows, sizeof(uint8_t), NULL) != LV_FS_RES_OK ||
+           lv_fs_read(fp, &kern_table_cols, sizeof(uint8_t), NULL) != LV_FS_RES_OK) {
+            return -1;
+        }
+
+        int kern_values_length = sizeof(int8_t) * kern_table_rows * kern_table_cols;
+
+        uint8_t * kern_left = lv_mem_alloc(kern_class_mapping_length);
+        uint8_t * kern_right = lv_mem_alloc(kern_class_mapping_length);
+        int8_t * kern_values = lv_mem_alloc(kern_values_length);
+
+        kern_classes->left_class_mapping  = kern_left;
+        kern_classes->right_class_mapping = kern_right;
+        kern_classes->left_class_cnt = kern_table_rows;
+        kern_classes->right_class_cnt = kern_table_cols;
+        kern_classes->class_pair_values = kern_values;
+
+        if(lv_fs_read(fp, kern_left, kern_class_mapping_length, NULL) != LV_FS_RES_OK ||
+           lv_fs_read(fp, kern_right, kern_class_mapping_length, NULL) != LV_FS_RES_OK ||
+           lv_fs_read(fp, kern_values, kern_values_length, NULL) != LV_FS_RES_OK) {
+            return -1;
+        }
+    }
+    else {
+        LV_LOG_WARN("Unknown kern_format_type: %d", kern_format_type);
+        return -1;
+    }
+
+    return kern_length;
+}
+
+#endif /*LV_USE_FILESYSTEM*/
+

src/lv_font/lv_font_loader.h

@@ -0,0 +1,44 @@
+/**
+ * @file lv_font_loader.h
+ *
+ */
+
+#ifndef LV_FONT_LOADER_H
+#define LV_FONT_LOADER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+#if LV_USE_FILESYSTEM
+
+lv_font_t * lv_font_load(const char * fontName);
+void lv_font_free(lv_font_t * font);
+
+#endif
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*LV_FONT_LOADER_H*/

src/lv_misc/lv_anim.c

@@ -475,8 +475,11 @@ static void anim_task(lv_task_t * param)
                 if(a->path.cb) new_value = a->path.cb(&a->path, a);
                 else new_value = lv_anim_path_linear(&a->path, a);
 
-                /*Apply the calculated value*/
+                if(new_value != a->current) {
-                if(a->exec_cb) a->exec_cb(a->var, new_value);
+                    a->current = new_value;
+                    /*Apply the calculated value*/
+                    if(a->exec_cb) a->exec_cb(a->var, new_value);
+                }
 
                 /*If the time is elapsed the animation is ready*/
                 if(a->act_time >= a->time) {

src/lv_misc/lv_anim.h

@@ -82,6 +82,7 @@ typedef struct _lv_anim_t {
     lv_anim_ready_cb_t ready_cb; /**< Call it when the animation is ready*/
     lv_anim_path_t path;         /**< Describe the path (curve) of animations*/
     int32_t start;               /**< Start value*/
+    int32_t current;             /**< Current value */
     int32_t end;                 /**< End value*/
     int32_t time;               /**< Animation time in ms*/
     int32_t act_time;            /**< Current time in animation. Set to negative to make delay.*/
@@ -171,6 +172,7 @@ static inline void lv_anim_set_delay(lv_anim_t * a, uint32_t delay)
 static inline void lv_anim_set_values(lv_anim_t * a, lv_anim_value_t start, lv_anim_value_t end)
 {
     a->start = start;
+    a->current = start;
     a->end   = end;
 }
 

src/lv_misc/lv_math.c

@@ -128,7 +128,6 @@ LV_ATTRIBUTE_FAST_MEM void _lv_sqrt(uint32_t x, lv_sqrt_res_t * q, uint32_t mask
     q->f = (uint32_t)(root & 0xf) << 4;
 }
 
-
 /**
  * Calculate the atan2 of a vector.
  * @param x
@@ -232,6 +231,32 @@ int64_t _lv_pow(int64_t base, int8_t exp)
     return result;
 }
 
+/**
+ * Get the mapped of a number given an input and output range
+ * @param x integer which mapped value should be calculated
+ * @param min_in min input range
+ * @param max_in max input range
+ * @param min_out max output range
+ * @param max_out max output range
+ * @return the mapped number
+ */
+int16_t _lv_map(int32_t x, int32_t min_in, int32_t max_in, int32_t min_out, int32_t max_out)
+{
+    if(x <= min_in) return min_out;
+    if(x >= max_in) return max_out;
+
+    /* The equation should be:
+     *   ((x - min_in) / delta in) * delta_out + min_out
+     * To avoid rounding error reorder the operations:
+     *   (((x - min_in) * delta_out) / delta in) + min_out
+     */
+
+    int32_t delta_in = max_in - min_in;
+    int32_t delta_out = max_out - min_out;
+
+    return ((x - min_in) * delta_out) / delta_in + min_out;
+}
+
 /**********************
  *   STATIC FUNCTIONS
  **********************/

src/lv_misc/lv_math.h

@@ -112,6 +112,17 @@ LV_ATTRIBUTE_FAST_MEM void _lv_sqrt(uint32_t x, lv_sqrt_res_t * q, uint32_t mask
  */
 int64_t _lv_pow(int64_t base, int8_t exp);
 
+/**
+ * Get the mapped of a number given an input and output range
+ * @param x integer which mapped value should be calculated
+ * @param min_in min input range
+ * @param max_in max input range
+ * @param min_out max output range
+ * @param max_out max output range
+ * @return the mapped number
+ */
+int16_t _lv_map(int32_t x, int32_t min_in, int32_t max_in, int32_t min, int32_t max);
+
 /**********************
  *      MACROS
  **********************/

src/lv_themes/lv_theme.h

@@ -109,6 +109,9 @@ typedef enum {
 #if LV_USE_ROLLER
     LV_THEME_ROLLER,
 #endif
+#if LV_USE_ROTARY
+    LV_THEME_ROTARY,
+#endif
 #if LV_USE_SLIDER
     LV_THEME_SLIDER,
 #endif

src/lv_themes/lv_theme_material.c

@@ -86,6 +86,7 @@ typedef struct {
 #if LV_USE_ARC
     lv_style_t arc_indic;
     lv_style_t arc_bg;
+    lv_style_t arc_knob;
 #endif
 
 #if LV_USE_BAR
@@ -505,6 +506,14 @@ static void arc_init(void)
     lv_style_set_line_color(&styles->arc_bg, LV_STATE_DEFAULT, COLOR_BG_SEC);
     lv_style_set_line_width(&styles->arc_bg, LV_STATE_DEFAULT, LV_DPX(25));
     lv_style_set_line_rounded(&styles->arc_bg, LV_STATE_DEFAULT, true);
+
+    style_init_reset(&styles->arc_knob);
+    lv_style_set_radius(&styles->arc_knob, LV_STATE_DEFAULT,   LV_RADIUS_CIRCLE);
+    lv_style_set_pad_top(&styles->arc_knob, LV_STATE_DEFAULT,  LV_DPX(0));
+    lv_style_set_pad_bottom(&styles->arc_knob, LV_STATE_DEFAULT,  LV_DPX(0));
+    lv_style_set_pad_left(&styles->arc_knob, LV_STATE_DEFAULT,    LV_DPX(0));
+    lv_style_set_pad_right(&styles->arc_knob, LV_STATE_DEFAULT,   LV_DPX(0));
+
 #endif
 }
 
@@ -620,6 +629,9 @@ static void checkbox_init(void)
     lv_style_set_radius(&styles->cb_bullet, LV_STATE_DEFAULT, LV_DPX(4));
     lv_style_set_pattern_image(&styles->cb_bullet, LV_STATE_CHECKED, LV_SYMBOL_OK);
     lv_style_set_pattern_recolor(&styles->cb_bullet, LV_STATE_CHECKED, LV_COLOR_WHITE);
+    lv_style_set_pattern_opa(&styles->cb_bullet, LV_STATE_DEFAULT, LV_OPA_TRANSP);
+    lv_style_set_pattern_opa(&styles->cb_bullet, LV_STATE_CHECKED, LV_OPA_COVER);
+    lv_style_set_transition_prop_3(&styles->cb_bullet, LV_STATE_DEFAULT, LV_STYLE_PATTERN_OPA);
     lv_style_set_text_font(&styles->cb_bullet, LV_STATE_CHECKED, theme.font_small);
     lv_style_set_pad_left(&styles->cb_bullet, LV_STATE_DEFAULT, LV_DPX(3));
     lv_style_set_pad_right(&styles->cb_bullet, LV_STATE_DEFAULT, LV_DPX(3));
@@ -1059,6 +1071,11 @@ static void theme_apply(lv_theme_t * th, lv_obj_t * obj, lv_theme_style_t name)
 
             list = lv_obj_get_style_list(obj, LV_ARC_PART_INDIC);
             _lv_style_list_add_style(list, &styles->arc_indic);
+
+            list = lv_obj_get_style_list(obj, LV_ARC_PART_KNOB);
+            _lv_style_list_add_style(list, &styles->bg);
+            _lv_style_list_add_style(list, &styles->bg_click);
+            _lv_style_list_add_style(list, &styles->arc_knob);
             break;
 #endif
 
@@ -1185,7 +1202,6 @@ static void theme_apply(lv_theme_t * th, lv_obj_t * obj, lv_theme_style_t name)
             break;
 #endif
 
-
 #if LV_USE_OBJMASK
         case LV_THEME_OBJMASK:
             list = lv_obj_get_style_list(obj, LV_OBJMASK_PART_MAIN);
@@ -1368,7 +1384,7 @@ static void theme_apply(lv_theme_t * th, lv_obj_t * obj, lv_theme_style_t name)
             break;
     }
 
-    lv_obj_refresh_style(obj, LV_STYLE_PROP_ALL);
+    lv_obj_refresh_style(obj, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
 }
 
 /**********************

src/lv_themes/lv_theme_mono.c

@@ -1023,7 +1023,7 @@ static void theme_apply(lv_theme_t * th, lv_obj_t * obj, lv_theme_style_t name)
     }
 
 
-    lv_obj_refresh_style(obj, LV_STYLE_PROP_ALL);
+    lv_obj_refresh_style(obj, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
 
 
 }

src/lv_themes/lv_theme_template.c

@@ -855,7 +855,7 @@ void theme_apply(lv_theme_t * th, lv_obj_t * obj, lv_theme_style_t name)
             break;
     }
 
-    lv_obj_refresh_style(obj, LV_STYLE_PROP_ALL);
+    lv_obj_refresh_style(obj, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
 }
 
 /**********************

src/lv_widgets/lv_arc.c

@@ -9,6 +9,8 @@
 #include "lv_arc.h"
 #if LV_USE_ARC != 0
 
+#include "../lv_core/lv_group.h"
+#include "../lv_core/lv_indev.h"
 #include "../lv_misc/lv_debug.h"
 #include "../lv_misc/lv_math.h"
 #include "../lv_draw/lv_draw_arc.h"
@@ -29,7 +31,9 @@
 static lv_design_res_t lv_arc_design(lv_obj_t * arc, const lv_area_t * clip_area, lv_design_mode_t mode);
 static lv_res_t lv_arc_signal(lv_obj_t * arc, lv_signal_t sign, void * param);
 static lv_style_list_t * lv_arc_get_style(lv_obj_t * arc, uint8_t part);
-static void inv_arc_area(lv_obj_t * arc, uint16_t start_angle, uint16_t end_angle);
+static void inv_arc_area(lv_obj_t * arc, uint16_t start_angle, uint16_t end_angle, lv_arc_part_t part);
+static void get_center(lv_obj_t * arc, lv_point_t * center, lv_coord_t * arc_r);
+static void get_knob_area(lv_obj_t * arc, const lv_point_t * center, lv_coord_t r, lv_area_t * knob_area);
 
 /**********************
  *  STATIC VARIABLES
@@ -78,7 +82,16 @@ lv_obj_t * lv_arc_create(lv_obj_t * par, const lv_obj_t * copy)
     ext->bg_angle_end   = 45;
     ext->arc_angle_start = 135;
     ext->arc_angle_end   = 270;
+    ext->type = LV_ARC_TYPE_NORMAL;
+    ext->cur_value = -1;
+    ext->min_value = 0;
+    ext->max_value = 100;
+    ext->dragging = false;
+    ext->chg_rate = 540;
+    ext->last_tick = lv_tick_get();
+    ext->last_angle = ext->arc_angle_end;
     lv_style_list_init(&ext->style_arc);
+    lv_style_list_init(&ext->style_knob);
 
     lv_obj_set_size(arc, LV_DPI, LV_DPI);
 
@@ -88,6 +101,10 @@ lv_obj_t * lv_arc_create(lv_obj_t * par, const lv_obj_t * copy)
 
     /*Init the new arc arc*/
     if(copy == NULL) {
+        lv_obj_set_click(arc, true);
+        lv_obj_add_protect(arc, LV_PROTECT_PRESS_LOST);
+        lv_obj_set_ext_click_area(arc, LV_DPI / 10, LV_DPI / 10, LV_DPI / 10, LV_DPI / 10);
+        lv_arc_set_value(arc, ext->min_value);
         lv_theme_apply(arc, LV_THEME_ARC);
     }
     /*Copy an existing arc*/
@@ -97,11 +114,19 @@ lv_obj_t * lv_arc_create(lv_obj_t * par, const lv_obj_t * copy)
         ext->arc_angle_end   = copy_ext->arc_angle_end;
         ext->bg_angle_start  = copy_ext->bg_angle_start;
         ext->bg_angle_end    = copy_ext->bg_angle_end;
-
+        ext->type = copy_ext->type;
+        ext->cur_value = copy_ext->cur_value;
+        ext->min_value = copy_ext->min_value;
+        ext->max_value = copy_ext->max_value;
+        ext->dragging = copy_ext->dragging;
+        ext->chg_rate = copy_ext->chg_rate;
+        ext->last_tick = copy_ext->last_tick;
+        ext->last_angle = copy_ext->last_angle;
+        lv_style_list_copy(&ext->style_knob, &copy_ext->style_knob);
         lv_style_list_copy(&ext->style_arc, &copy_ext->style_arc);
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(arc, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(arc, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("arc created");
@@ -140,11 +165,11 @@ void lv_arc_set_start_angle(lv_obj_t * arc, uint16_t start)
     }
     /*Only a smaller incremental move*/
     else if(ext->arc_angle_start > ext->arc_angle_end && start > ext->arc_angle_end) {
-        inv_arc_area(arc, LV_MATH_MIN(ext->arc_angle_start, start), LV_MATH_MAX(ext->arc_angle_start, start));
+        inv_arc_area(arc, LV_MATH_MIN(ext->arc_angle_start, start), LV_MATH_MAX(ext->arc_angle_start, start), LV_ARC_PART_INDIC);
     }
     /*Only a smaller incremental move*/
     else  if(ext->arc_angle_start < ext->arc_angle_end && start < ext->arc_angle_end) {
-        inv_arc_area(arc, LV_MATH_MIN(ext->arc_angle_start, start), LV_MATH_MAX(ext->arc_angle_start, start));
+        inv_arc_area(arc, LV_MATH_MIN(ext->arc_angle_start, start), LV_MATH_MAX(ext->arc_angle_start, start), LV_ARC_PART_INDIC);
     }
     /*Crossing the start angle makes the whole arc change*/
     else {
@@ -173,11 +198,11 @@ void lv_arc_set_end_angle(lv_obj_t * arc, uint16_t end)
     }
     /*Only a smaller incremental move*/
     else if(ext->arc_angle_end > ext->arc_angle_start && end > ext->arc_angle_start) {
-        inv_arc_area(arc, LV_MATH_MIN(ext->arc_angle_end, end), LV_MATH_MAX(ext->arc_angle_end, end));
+        inv_arc_area(arc, LV_MATH_MIN(ext->arc_angle_end, end), LV_MATH_MAX(ext->arc_angle_end, end), LV_ARC_PART_INDIC);
     }
     /*Only a smaller incremental move*/
     else  if(ext->arc_angle_end < ext->arc_angle_start && end < ext->arc_angle_start) {
-        inv_arc_area(arc, LV_MATH_MIN(ext->arc_angle_end, end), LV_MATH_MAX(ext->arc_angle_end, end));
+        inv_arc_area(arc, LV_MATH_MIN(ext->arc_angle_end, end), LV_MATH_MAX(ext->arc_angle_end, end), LV_ARC_PART_INDIC);
     }
     /*Crossing the end angle makes the whole arc change*/
     else {
@@ -203,12 +228,12 @@ void lv_arc_set_angles(lv_obj_t * arc, uint16_t start, uint16_t end)
     if(start > 360) start -= 360;
     if(end > (start + 360)) end = start + 360;
 
-    inv_arc_area(arc, ext->arc_angle_start, ext->arc_angle_end);
+    inv_arc_area(arc, ext->arc_angle_start, ext->arc_angle_end, LV_ARC_PART_INDIC);
 
     ext->arc_angle_start = start;
     ext->arc_angle_end = end;
 
-    inv_arc_area(arc, ext->arc_angle_start, ext->arc_angle_end);
+    inv_arc_area(arc, ext->arc_angle_start, ext->arc_angle_end, LV_ARC_PART_INDIC);
 }
 
 /**
@@ -230,11 +255,11 @@ void lv_arc_set_bg_start_angle(lv_obj_t * arc, uint16_t start)
     }
     /*Only a smaller incremental move*/
     else if(ext->bg_angle_start > ext->bg_angle_end && start > ext->bg_angle_end) {
-        inv_arc_area(arc, LV_MATH_MIN(ext->bg_angle_start, start), LV_MATH_MAX(ext->bg_angle_start, start));
+        inv_arc_area(arc, LV_MATH_MIN(ext->bg_angle_start, start), LV_MATH_MAX(ext->bg_angle_start, start), LV_ARC_PART_BG);
     }
     /*Only a smaller incremental move*/
     else  if(ext->bg_angle_start < ext->bg_angle_end && start < ext->bg_angle_end) {
-        inv_arc_area(arc, LV_MATH_MIN(ext->bg_angle_start, start), LV_MATH_MAX(ext->bg_angle_start, start));
+        inv_arc_area(arc, LV_MATH_MIN(ext->bg_angle_start, start), LV_MATH_MAX(ext->bg_angle_start, start), LV_ARC_PART_BG);
     }
     /*Crossing the start angle makes the whole arc change*/
     else {
@@ -263,11 +288,11 @@ void lv_arc_set_bg_end_angle(lv_obj_t * arc, uint16_t end)
     }
     /*Only a smaller incremental move*/
     else if(ext->bg_angle_end > ext->bg_angle_start && end > ext->bg_angle_start) {
-        inv_arc_area(arc, LV_MATH_MIN(ext->bg_angle_end, end), LV_MATH_MAX(ext->bg_angle_end, end));
+        inv_arc_area(arc, LV_MATH_MIN(ext->bg_angle_end, end), LV_MATH_MAX(ext->bg_angle_end, end), LV_ARC_PART_BG);
     }
     /*Only a smaller incremental move*/
     else  if(ext->bg_angle_end < ext->bg_angle_start && end < ext->bg_angle_start) {
-        inv_arc_area(arc, LV_MATH_MIN(ext->bg_angle_end, end), LV_MATH_MAX(ext->bg_angle_end, end));
+        inv_arc_area(arc, LV_MATH_MIN(ext->bg_angle_end, end), LV_MATH_MAX(ext->bg_angle_end, end), LV_ARC_PART_BG);
     }
     /*Crossing the end angle makes the whole arc change*/
     else {
@@ -292,12 +317,12 @@ void lv_arc_set_bg_angles(lv_obj_t * arc, uint16_t start, uint16_t end)
     if(start > 360) start -= 360;
     if(end > (start + 360)) end = start + 360;
 
-    inv_arc_area(arc, ext->bg_angle_start, ext->bg_angle_end);
+    inv_arc_area(arc, ext->bg_angle_start, ext->bg_angle_end, LV_ARC_PART_BG);
 
     ext->bg_angle_start = start;
     ext->bg_angle_end = end;
 
-    inv_arc_area(arc, ext->bg_angle_start, ext->bg_angle_end);
+    inv_arc_area(arc, ext->bg_angle_start, ext->bg_angle_end, LV_ARC_PART_BG);
 }
 
 /**
@@ -316,6 +341,131 @@ void lv_arc_set_rotation(lv_obj_t * arc, uint16_t rotation_angle)
     lv_obj_invalidate(arc);
 }
 
+
+/**
+ * Set the type of arc.
+ * @param arc pointer to arc object
+ * @param type arc type
+ */
+void lv_arc_set_type(lv_obj_t * arc, lv_arc_type_t type)
+{
+    LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+    lv_arc_ext_t *ext = (lv_arc_ext_t *)lv_obj_get_ext_attr(arc);
+    int16_t val = ext->cur_value;
+
+    ext->type = type;
+    ext->cur_value = -1; /** Force set_value handling*/
+
+    int16_t bg_midpoint, bg_end = ext->bg_angle_end;
+    if (ext->bg_angle_end < ext->bg_angle_start) bg_end = ext->bg_angle_end + 360;
+
+    switch(ext->type) {
+        case LV_ARC_TYPE_SYMMETRIC:
+            bg_midpoint = (ext->bg_angle_start + bg_end) / 2;
+            lv_arc_set_start_angle(arc, bg_midpoint);
+            lv_arc_set_end_angle(arc, bg_midpoint);
+            break;
+        case LV_ARC_TYPE_REVERSE:
+            lv_arc_set_end_angle(arc, ext->bg_angle_end);
+            break;
+        default: /** LV_ARC_TYPE_NORMAL*/
+            lv_arc_set_start_angle(arc, ext->bg_angle_start);
+    }
+
+    lv_arc_set_value(arc, val);
+}
+
+/**
+ * Set a new value on the arc
+ * @param arc pointer to a arc object
+ * @param value new value
+ */
+void lv_arc_set_value(lv_obj_t * arc, int16_t value)
+{
+    LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+    lv_arc_ext_t * ext = (lv_arc_ext_t *)lv_obj_get_ext_attr(arc);
+    if(ext->cur_value == value) return;
+
+    int16_t new_value;
+    new_value = value > ext->max_value ? ext->max_value : value;
+    new_value = new_value < ext->min_value ? ext->min_value : new_value;
+
+    if(ext->cur_value == new_value) return;
+    ext->cur_value = new_value;
+
+    int16_t bg_midpoint, range_midpoint, bg_end = ext->bg_angle_end;
+    if (ext->bg_angle_end < ext->bg_angle_start) bg_end = ext->bg_angle_end + 360;
+
+    int16_t angle;
+    switch(ext->type) {
+        case LV_ARC_TYPE_SYMMETRIC:
+            bg_midpoint = (ext->bg_angle_start + bg_end) / 2;
+            range_midpoint = (int32_t)(ext->min_value + ext->max_value) / 2;
+
+            if (ext->cur_value < range_midpoint) {
+                angle = _lv_map(ext->cur_value, ext->min_value, range_midpoint, ext->bg_angle_start, bg_midpoint);
+                lv_arc_set_start_angle(arc, angle);
+                lv_arc_set_end_angle(arc, bg_midpoint);
+            } else {
+                angle = _lv_map(ext->cur_value, range_midpoint, ext->max_value, bg_midpoint, bg_end);
+                lv_arc_set_start_angle(arc, bg_midpoint);
+                lv_arc_set_end_angle(arc, angle);
+            }
+            break;
+        case LV_ARC_TYPE_REVERSE:
+            angle = _lv_map(ext->cur_value, ext->min_value, ext->max_value, ext->bg_angle_start, bg_end);
+            lv_arc_set_start_angle(arc, angle);
+            break;
+        default: /** LV_ARC_TYPE_NORMAL*/
+            angle = _lv_map(ext->cur_value, ext->min_value, ext->max_value, ext->bg_angle_start, bg_end);
+            lv_arc_set_end_angle(arc, angle);
+    }
+    ext->last_angle = angle; /*Cache angle for slew rate limiting*/
+}
+
+/**
+ * Set minimum and the maximum values of a arc
+ * @param arc pointer to the arc object
+ * @param min minimum value
+ * @param max maximum value
+ */
+void lv_arc_set_range(lv_obj_t * arc, int16_t min, int16_t max)
+{
+     LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+    lv_arc_ext_t * ext = (lv_arc_ext_t *)lv_obj_get_ext_attr(arc);
+    if(ext->min_value == min && ext->max_value == max) return;
+
+    ext->min_value = min;
+    ext->max_value = max;
+
+    if(ext->cur_value < min) {
+        ext->cur_value = min;
+    }
+    if(ext->cur_value > max) {
+        ext->cur_value = max;
+    }
+
+    lv_arc_set_value(arc, ext->cur_value);
+}
+
+/**
+ * Set the threshold of arc knob increments
+ * position.
+ * @param arc pointer to a arc object
+ * @param threshold increment threshold
+ */
+void lv_arc_set_chg_rate(lv_obj_t * arc, uint16_t rate)
+{
+    LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+    lv_arc_ext_t *ext = (lv_arc_ext_t *)lv_obj_get_ext_attr(arc);
+    ext->chg_rate = rate;
+}
+
+
 /*=====================
  * Getter functions
  *====================*/
@@ -376,6 +526,72 @@ uint16_t lv_arc_get_bg_angle_end(lv_obj_t * arc)
     return ext->bg_angle_end;
 }
 
+
+/**
+ * Get the value of a arc
+ * @param arc pointer to a arc object
+ * @return the value of the arc
+ */
+int16_t lv_arc_get_value(const lv_obj_t * arc)
+{
+    LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+    lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
+    return ext->cur_value;
+}
+
+/**
+ * Get the minimum value of a arc
+ * @param arc pointer to a arc object
+ * @return the minimum value of the arc
+ */
+int16_t lv_arc_get_min_value(const lv_obj_t * arc)
+{
+    LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+    lv_arc_ext_t *ext = (lv_arc_ext_t *)lv_obj_get_ext_attr(arc);
+    return ext->min_value;
+}
+
+/**
+ * Get the maximum value of a arc
+ * @param arc pointer to a arc object
+ * @return the maximum value of the arc
+ */
+int16_t lv_arc_get_max_value(const lv_obj_t * arc)
+{
+    LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+    lv_arc_ext_t *ext = (lv_arc_ext_t *)lv_obj_get_ext_attr(arc);
+    return ext->max_value;
+}
+
+/**
+ * Give the arc is being dragged or not
+ * @param arc pointer to a arc object
+ * @return true: drag in progress false: not dragged
+ */
+bool lv_arc_is_dragged(const lv_obj_t * arc)
+{
+    LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+    lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
+    return ext->dragging;
+}
+
+/**
+ * Get whether the arc is type or not.
+ * @param arc pointer to a arc object
+ * @return arc type
+ */
+lv_arc_type_t lv_arc_get_type(const lv_obj_t * arc)
+{
+    LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+    lv_arc_ext_t * ext = (lv_arc_ext_t *)lv_obj_get_ext_attr(arc);
+    return ext->type;
+}
+
 /*=====================
  * Other functions
  *====================*/
@@ -414,21 +630,17 @@ static lv_design_res_t lv_arc_design(lv_obj_t * arc, const lv_area_t * clip_area
 
         lv_draw_rect(&arc->coords, clip_area, &bg_dsc);
 
-        lv_coord_t left_bg = lv_obj_get_style_pad_left(arc, LV_ARC_PART_BG);
+        lv_point_t center;
-        lv_coord_t right_bg = lv_obj_get_style_pad_right(arc, LV_ARC_PART_BG);
+        lv_coord_t arc_r;
-        lv_coord_t top_bg = lv_obj_get_style_pad_top(arc, LV_ARC_PART_BG);
+        get_center(arc, &center, &arc_r);
-        lv_coord_t bottom_bg = lv_obj_get_style_pad_bottom(arc, LV_ARC_PART_BG);
-        lv_coord_t r       = (LV_MATH_MIN(lv_obj_get_width(arc) - left_bg - right_bg,
-                                          lv_obj_get_height(arc) - top_bg - bottom_bg)) / 2;
-        lv_draw_line_dsc_t arc_dsc;
-        lv_coord_t x       = arc->coords.x1 + r + left_bg;
-        lv_coord_t y       = arc->coords.y1 + r + top_bg;
 
-        if(r > 0) {
+        /*Draw the background arc*/
+        lv_draw_line_dsc_t arc_dsc;
+        if(arc_r > 0) {
             lv_draw_line_dsc_init(&arc_dsc);
             lv_obj_init_draw_line_dsc(arc, LV_ARC_PART_BG, &arc_dsc);
 
-            lv_draw_arc(x, y, r, ext->bg_angle_start + ext->rotation_angle, ext->bg_angle_end + ext->rotation_angle, clip_area,
+            lv_draw_arc(center.x, center.y, arc_r, ext->bg_angle_start + ext->rotation_angle, ext->bg_angle_end + ext->rotation_angle, clip_area,
                         &arc_dsc);
         }
 
@@ -438,15 +650,25 @@ static lv_design_res_t lv_arc_design(lv_obj_t * arc, const lv_area_t * clip_area
         lv_coord_t right_indic = lv_obj_get_style_pad_right(arc, LV_ARC_PART_INDIC);
         lv_coord_t top_indic = lv_obj_get_style_pad_top(arc, LV_ARC_PART_INDIC);
         lv_coord_t bottom_indic = lv_obj_get_style_pad_bottom(arc, LV_ARC_PART_INDIC);
-        r -= LV_MATH_MAX4(left_indic, right_indic, top_indic, bottom_indic);
+        lv_coord_t indic_r = arc_r - LV_MATH_MAX4(left_indic, right_indic, top_indic, bottom_indic);
 
-        if(r > 0) {
+        if(indic_r > 0) {
             lv_draw_line_dsc_init(&arc_dsc);
             lv_obj_init_draw_line_dsc(arc, LV_ARC_PART_INDIC, &arc_dsc);
 
-            lv_draw_arc(x, y, r, ext->arc_angle_start + ext->rotation_angle, ext->arc_angle_end + ext->rotation_angle, clip_area,
+            lv_draw_arc(center.x, center.y, indic_r, ext->arc_angle_start + ext->rotation_angle, ext->arc_angle_end + ext->rotation_angle, clip_area,
                         &arc_dsc);
         }
+
+        lv_area_t knob_area;
+        get_knob_area(arc, &center, arc_r, &knob_area);
+
+        lv_draw_rect_dsc_t knob_rect_dsc;
+        lv_draw_rect_dsc_init(&knob_rect_dsc);
+        lv_obj_init_draw_rect_dsc(arc, LV_ARC_PART_KNOB, &knob_rect_dsc);
+
+        lv_draw_rect(&knob_area, clip_area, &knob_rect_dsc);
+
     }
     /*Post draw when the children are drawn*/
     else if(mode == LV_DESIGN_DRAW_POST) {
@@ -478,7 +700,119 @@ static lv_res_t lv_arc_signal(lv_obj_t * arc, lv_signal_t sign, void * param)
 
     if(sign == LV_SIGNAL_GET_TYPE) return lv_obj_handle_get_type_signal(param, LV_OBJX_NAME);
 
-    if(sign == LV_SIGNAL_CLEANUP) {
+    lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
+
+    if(sign == LV_SIGNAL_PRESSING) {
+        lv_indev_t * indev = lv_indev_get_act();
+        if(indev == NULL) return res;
+
+        /*Handle only pointers here*/
+        lv_indev_type_t indev_type = lv_indev_get_type(indev);
+        if(indev_type != LV_INDEV_TYPE_POINTER) return res;
+
+        lv_point_t p;
+        lv_indev_get_point(indev, &p);
+
+        /*Make point relative to the arc's center*/
+        lv_point_t center;
+        lv_coord_t r;
+        get_center(arc, &center, &r);
+
+        p.x -=  center.x;
+        p.y -=  center.y;
+
+        /*Enter dragging mode if pressed out of the knob*/
+        if(ext->dragging == false) {
+            lv_coord_t indic_width = lv_obj_get_style_line_width(arc, LV_ARC_PART_INDIC);
+            r -=  indic_width;
+            r -= r / 2; /*Add some more sensitive area*/
+            if(p.x * p.x + p.y * p.y > r * r) {
+                ext->dragging = true;
+                ext->last_tick = lv_tick_get(); /*Capture timestamp at dragging start*/
+            }
+        }
+
+        /*It must be in "dragging" mode to turn the arc*/
+        if(ext->dragging == false) return res;
+
+        /*Calculate the angle of the pressed point*/
+        int16_t angle;
+        int16_t bg_end = ext->bg_angle_end;
+        if (ext->bg_angle_end < ext->bg_angle_start) {
+            bg_end = ext->bg_angle_end + 360;
+        }
+
+        angle = 360 - _lv_atan2(p.x, p.y) + 90; /*Some transformation is required*/
+        if(angle < ext->bg_angle_start) angle = ext->bg_angle_start;
+        if(angle > bg_end) angle = bg_end;
+
+        /*Calculate the slew rate limited angle based on change rate (degrees/sec)*/
+        int16_t delta_angle = angle - ext->last_angle;
+        uint32_t delta_tick = lv_tick_elaps(ext->last_tick);
+        int16_t delta_angle_max = (ext->chg_rate * delta_tick) / 1000;
+
+        if (delta_angle > delta_angle_max) {
+            delta_angle = delta_angle_max;
+        } else if (delta_angle < -delta_angle_max) {
+            delta_angle = -delta_angle_max;
+        }
+
+        angle = ext->last_angle + delta_angle; /*Apply the limited angle change*/
+
+        /*Rounding for symmetry*/
+        int32_t round = ((bg_end - ext->bg_angle_start) * 8) / (ext->max_value - ext->min_value);
+        round = (round + 4) >> 4;
+        angle += round;
+
+        /*Set the new value*/
+        int16_t old_value = ext->cur_value;
+        int16_t new_value = _lv_map(angle, ext->bg_angle_start, bg_end, ext->min_value, ext->max_value);
+        if(new_value != lv_arc_get_value(arc)) {
+            ext->last_tick = lv_tick_get(); /*Cache timestamp for the next iteration*/
+            lv_arc_set_value(arc, new_value); /*set_value caches the last_angle for the next iteration*/
+            if(new_value != old_value) {
+                res = lv_event_send(arc, LV_EVENT_VALUE_CHANGED, NULL);
+                if(res != LV_RES_OK) return res;
+            }
+        }
+
+        /*Don1't let the elapsed time to big while sitting on an end point*/
+        if(new_value == ext->min_value || new_value == ext->max_value) {
+            ext->last_tick = lv_tick_get(); /*Cache timestamp for the next iteration*/
+        }
+    }
+    else if(sign == LV_SIGNAL_RELEASED || sign == LV_SIGNAL_PRESS_LOST) {
+        ext->dragging = false;
+
+#if LV_USE_GROUP
+        /*Leave edit mode if released. (No need to wait for LONG_PRESS) */
+        lv_group_t * g             = lv_obj_get_group(arc);
+        bool editing               = lv_group_get_editing(g);
+        lv_indev_type_t indev_type = lv_indev_get_type(lv_indev_get_act());
+        if(indev_type == LV_INDEV_TYPE_ENCODER) {
+            if(editing) lv_group_set_editing(g, false);
+        }
+#endif
+
+    }
+    else if(sign == LV_SIGNAL_CONTROL) {
+        char c = *((char *)param);
+
+        int16_t old_value = ext->cur_value;
+        if(c == LV_KEY_RIGHT || c == LV_KEY_UP) {
+            lv_arc_set_value(arc, lv_arc_get_value(arc) + 1);
+        }
+        else if(c == LV_KEY_LEFT || c == LV_KEY_DOWN) {
+            lv_arc_set_value(arc, lv_arc_get_value(arc) - 1);
+        }
+
+        if (old_value != ext->cur_value) {
+            res = lv_event_send(arc, LV_EVENT_VALUE_CHANGED, NULL);
+            if(res != LV_RES_OK) return res;
+        }
+    }
+    else if(sign == LV_SIGNAL_CLEANUP) {
+        lv_obj_clean_style_list(arc, LV_ARC_PART_KNOB);
         lv_obj_clean_style_list(arc, LV_ARC_PART_INDIC);
     }
 
@@ -506,6 +840,9 @@ static lv_style_list_t * lv_arc_get_style(lv_obj_t * arc, uint8_t part)
         case LV_ARC_PART_INDIC:
             style_dsc_p = &ext->style_arc;
             break;
+        case LV_ARC_PART_KNOB:
+            style_dsc_p = &ext->style_knob;
+            break;
         default:
             style_dsc_p = NULL;
     }
@@ -513,8 +850,11 @@ static lv_style_list_t * lv_arc_get_style(lv_obj_t * arc, uint8_t part)
     return style_dsc_p;
 }
 
-static void inv_arc_area(lv_obj_t * arc, uint16_t start_angle, uint16_t end_angle)
+static void inv_arc_area(lv_obj_t * arc, uint16_t start_angle, uint16_t end_angle, lv_arc_part_t part)
 {
+    /*Skip this complicated invalidation if the arc is not visible*/
+    if(lv_obj_is_visible(arc) == false) return;
+
     lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
 
     start_angle += ext->rotation_angle;
@@ -533,10 +873,26 @@ static void inv_arc_area(lv_obj_t * arc, uint16_t start_angle, uint16_t end_angl
     lv_coord_t rout       = (LV_MATH_MIN(lv_obj_get_width(arc) - left - right, lv_obj_get_height(arc) - top - bottom)) / 2;
     lv_coord_t x       = arc->coords.x1 + rout + left;
     lv_coord_t y       = arc->coords.y1 + rout + top;
-    lv_style_int_t w = lv_obj_get_style_line_width(arc, LV_ARC_PART_INDIC);
+    lv_style_int_t w = lv_obj_get_style_line_width(arc, part);
-    lv_style_int_t rounded = lv_obj_get_style_line_rounded(arc, LV_ARC_PART_INDIC);
+    lv_style_int_t rounded = lv_obj_get_style_line_rounded(arc, part);
     lv_coord_t rin       = rout - w;
-    lv_coord_t extra_area = rounded ? w / 2 + 2 : 0;
+    lv_coord_t extra_area = 0;
+
+    extra_area = rounded ? w / 2 + 2 : 0;
+
+    if(part == LV_ARC_PART_INDIC && lv_style_list_get_style(&ext->style_knob, 0) != NULL) {
+        lv_coord_t knob_extra_size = lv_obj_get_draw_rect_ext_pad_size(arc, LV_ARC_PART_KNOB);
+
+        lv_coord_t knob_left = lv_obj_get_style_pad_left(arc, LV_ARC_PART_KNOB);
+        lv_coord_t knob_right = lv_obj_get_style_pad_right(arc, LV_ARC_PART_KNOB);
+        lv_coord_t knob_top = lv_obj_get_style_pad_top(arc, LV_ARC_PART_KNOB);
+        lv_coord_t knob_bottom = lv_obj_get_style_pad_bottom(arc, LV_ARC_PART_KNOB);
+
+        knob_extra_size += LV_MATH_MAX4(knob_left, knob_right, knob_top, knob_bottom);
+
+        extra_area = LV_MATH_MAX(extra_area, w / 2 + 2 + knob_extra_size);
+
+    }
 
     lv_area_t inv_area;
 
@@ -617,4 +973,56 @@ static void inv_arc_area(lv_obj_t * arc, uint16_t start_angle, uint16_t end_angl
         lv_obj_invalidate(arc);
     }
 }
+
+static void get_center(lv_obj_t * arc, lv_point_t * center, lv_coord_t * arc_r)
+{
+    lv_coord_t left_bg = lv_obj_get_style_pad_left(arc, LV_ARC_PART_BG);
+    lv_coord_t right_bg = lv_obj_get_style_pad_right(arc, LV_ARC_PART_BG);
+    lv_coord_t top_bg = lv_obj_get_style_pad_top(arc, LV_ARC_PART_BG);
+    lv_coord_t bottom_bg = lv_obj_get_style_pad_bottom(arc, LV_ARC_PART_BG);
+
+    lv_coord_t r = (LV_MATH_MIN(lv_obj_get_width(arc) - left_bg - right_bg,
+                                lv_obj_get_height(arc) - top_bg - bottom_bg)) / 2;
+
+    *arc_r = r;
+    center->x = arc->coords.x1 + r + left_bg;
+    center->y = arc->coords.y1 + r + top_bg;
+
+
+    lv_coord_t indic_width = lv_obj_get_style_line_width(arc, LV_ARC_PART_INDIC);
+    r -= indic_width;
+}
+
+static void get_knob_area(lv_obj_t * arc, const lv_point_t * center, lv_coord_t r, lv_area_t * knob_area)
+{
+    lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
+
+    lv_coord_t indic_width = lv_obj_get_style_line_width(arc, LV_ARC_PART_INDIC);
+    lv_coord_t indic_width_half = indic_width / 2;
+    r -= indic_width_half;
+
+    uint16_t angle = ext->rotation_angle;
+    if(ext->type == LV_ARC_TYPE_NORMAL) {
+        angle += ext->arc_angle_end;
+    } else if(ext->type == LV_ARC_TYPE_REVERSE) {
+        angle += ext->arc_angle_start;
+    } else if(ext->type == LV_ARC_TYPE_SYMMETRIC) {
+        int32_t range_midpoint = (int32_t)(ext->min_value + ext->max_value) / 2;
+        if(ext->cur_value < range_midpoint) angle += ext->arc_angle_start;
+        else angle += ext->arc_angle_end;
+    }
+    lv_coord_t knob_x = (r * _lv_trigo_sin(angle + 90)) >> LV_TRIGO_SHIFT;
+    lv_coord_t knob_y = (r * _lv_trigo_sin(angle)) >> LV_TRIGO_SHIFT;
+
+    lv_coord_t left_knob = lv_obj_get_style_pad_left(arc, LV_ARC_PART_KNOB);
+    lv_coord_t right_knob = lv_obj_get_style_pad_right(arc, LV_ARC_PART_KNOB);
+    lv_coord_t top_knob = lv_obj_get_style_pad_top(arc, LV_ARC_PART_KNOB);
+    lv_coord_t bottom_knob = lv_obj_get_style_pad_bottom(arc, LV_ARC_PART_KNOB);
+
+    knob_area->x1 = center->x + knob_x - left_knob - indic_width_half;
+    knob_area->x2 = center->x + knob_x + right_knob + indic_width_half;
+    knob_area->y1 = center->y + knob_y - top_knob - indic_width_half;
+    knob_area->y2 = center->y + knob_y + bottom_knob + indic_width_half;
+}
+
 #endif

src/lv_widgets/lv_arc.h

@@ -26,6 +26,14 @@ extern "C" {
 /**********************
  *      TYPEDEFS
  **********************/
+
+enum {
+    LV_ARC_TYPE_NORMAL,
+    LV_ARC_TYPE_SYMMETRIC,
+    LV_ARC_TYPE_REVERSE
+};
+typedef uint8_t lv_arc_type_t;
+
 /*Data of arc*/
 typedef struct {
     /*New data for this type */
@@ -35,14 +43,24 @@ typedef struct {
     uint16_t bg_angle_start;
     uint16_t bg_angle_end;
     lv_style_list_t style_arc;
+    lv_style_list_t style_knob; /* Style of the knob */
+
+    int16_t cur_value; /*Current value of the arc*/
+    int16_t min_value; /*Minimum value of the arc*/
+    int16_t max_value; /*Maximum value of the arc*/
+    uint16_t dragging    :1;
+    uint16_t type        :2;
+    uint16_t chg_rate; /*Drag angle rate of change of the arc (degrees/sec)*/
+    uint32_t last_tick; /*Last dragging event timestamp of the arc*/
+    int16_t last_angle; /*Last dragging angle of the arc*/
 } lv_arc_ext_t;
 
 /*Parts of the arc*/
 enum {
     LV_ARC_PART_BG = LV_OBJ_PART_MAIN,
     LV_ARC_PART_INDIC,
+    LV_ARC_PART_KNOB,
     _LV_ARC_PART_VIRTUAL_LAST,
-
     _LV_ARC_PART_REAL_LAST = _LV_OBJ_PART_REAL_LAST,
 };
 typedef uint8_t lv_arc_part_t;
@@ -118,6 +136,45 @@ void lv_arc_set_bg_angles(lv_obj_t * arc, uint16_t start, uint16_t end);
  */
 void lv_arc_set_rotation(lv_obj_t * arc, uint16_t rotation_angle);
 
+
+/**
+ * Set the type of arc.
+ * @param arc pointer to arc object
+ * @param type arc type
+ */
+void lv_arc_set_type(lv_obj_t * arc, lv_arc_type_t type);
+
+/**
+ * Set a new value on the arc
+ * @param arc pointer to a arc object
+ * @param value new value
+ */
+void lv_arc_set_value(lv_obj_t * arc, int16_t value);
+
+/**
+ * Set minimum and the maximum values of a arc
+ * @param arc pointer to the arc object
+ * @param min minimum value
+ * @param max maximum value
+ */
+void lv_arc_set_range(lv_obj_t * arc, int16_t min, int16_t max);
+
+/**
+ * Reverse arc behavior. The indicator will grow from arc end instead of arc start.
+ * position.
+ * @param arc pointer to a arc object
+ * @param reverse true: enable disable reverse behavior; false: disable
+ */
+void lv_arc_set_reverse(lv_obj_t * arc, bool reverse);
+
+/**
+ * Set the threshold of arc knob increments
+ * position.
+ * @param arc pointer to a arc object
+ * @param threshold increment threshold
+ */
+void lv_arc_set_chg_rate(lv_obj_t * arc, uint16_t threshold);
+
 /*=====================
  * Getter functions
  *====================*/
@@ -150,6 +207,41 @@ uint16_t lv_arc_get_bg_angle_start(lv_obj_t * arc);
  */
 uint16_t lv_arc_get_bg_angle_end(lv_obj_t * arc);
 
+/**
+ * Get whether the arc is type or not.
+ * @param arc pointer to a arc object
+ * @return arc type
+ */
+lv_arc_type_t lv_arc_get_type(const lv_obj_t * arc);
+
+/**
+ * Get the value of the of a arc
+ * @param arc pointer to a arc object
+ * @return the value of the of the arc
+ */
+int16_t lv_arc_get_value(const lv_obj_t * arc);
+
+/**
+ * Get the minimum value of a arc
+ * @param arc pointer to a arc object
+ * @return the minimum value of the arc
+ */
+int16_t lv_arc_get_min_value(const lv_obj_t * arc);
+
+/**
+ * Get the maximum value of a arc
+ * @param arc pointer to a arc object
+ * @return the maximum value of the arc
+ */
+int16_t lv_arc_get_max_value(const lv_obj_t * arc);
+
+/**
+ * Give the arc is being dragged or not
+ * @param arc pointer to a arc object
+ * @return true: drag in progress false: not dragged
+ */
+bool lv_arc_is_dragged(const lv_obj_t * arc);
+
 /*=====================
  * Other functions
  *====================*/

src/lv_widgets/lv_bar.c

@@ -130,7 +130,7 @@ lv_obj_t * lv_bar_create(lv_obj_t * par, const lv_obj_t * copy)
         lv_style_list_copy(&ext->style_indic, &ext_copy->style_indic);
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(bar, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(bar, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
 
         lv_bar_set_value(bar, ext->cur_value, LV_ANIM_OFF);
     }

src/lv_widgets/lv_btn.c

@@ -100,7 +100,7 @@ lv_obj_t * lv_btn_create(lv_obj_t * par, const lv_obj_t * copy)
         ext->checkable             = copy_ext->checkable;
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(btn, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(btn, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("button created");

src/lv_widgets/lv_btnmatrix.c

@@ -660,6 +660,7 @@ static lv_design_res_t lv_btnmatrix_design(lv_obj_t * btnm, const lv_area_t * cl
         lv_draw_label_dsc_t draw_label_tmp_dsc;
 
         lv_state_t state_ori = btnm->state;
+        _lv_obj_disable_style_caching(btnm, true);
         btnm->state = LV_STATE_DEFAULT;
         lv_draw_rect_dsc_init(&draw_rect_rel_dsc);
         lv_draw_label_dsc_init(&draw_label_rel_dsc);
@@ -667,6 +668,7 @@ static lv_design_res_t lv_btnmatrix_design(lv_obj_t * btnm, const lv_area_t * cl
         lv_obj_init_draw_label_dsc(btnm, LV_BTNMATRIX_PART_BTN, &draw_label_rel_dsc);
         draw_label_rel_dsc.flag = txt_flag;
         btnm->state = state_ori;
+        _lv_obj_disable_style_caching(btnm, false);
 
         bool chk_inited = false;
         bool disabled_inited = false;
@@ -711,12 +713,14 @@ static lv_design_res_t lv_btnmatrix_design(lv_obj_t * btnm, const lv_area_t * cl
             else if(btn_state == LV_STATE_CHECKED) {
                 if(!chk_inited) {
                     btnm->state = LV_STATE_CHECKED;
+                    _lv_obj_disable_style_caching(btnm, true);
                     lv_draw_rect_dsc_init(&draw_rect_chk_dsc);
                     lv_draw_label_dsc_init(&draw_label_chk_dsc);
                     lv_obj_init_draw_rect_dsc(btnm, LV_BTNMATRIX_PART_BTN, &draw_rect_chk_dsc);
                     lv_obj_init_draw_label_dsc(btnm, LV_BTNMATRIX_PART_BTN, &draw_label_chk_dsc);
                     draw_label_chk_dsc.flag = txt_flag;
                     btnm->state = state_ori;
+                    _lv_obj_disable_style_caching(btnm, false);
                     chk_inited = true;
                 }
                 draw_rect_dsc_act = &draw_rect_chk_dsc;
@@ -725,12 +729,14 @@ static lv_design_res_t lv_btnmatrix_design(lv_obj_t * btnm, const lv_area_t * cl
             else if(btn_state == LV_STATE_CHECKED) {
                 if(!disabled_inited) {
                     btnm->state = LV_STATE_DISABLED;
+                    _lv_obj_disable_style_caching(btnm, true);
                     lv_draw_rect_dsc_init(&draw_rect_ina_dsc);
                     lv_draw_label_dsc_init(&draw_label_ina_dsc);
                     lv_obj_init_draw_rect_dsc(btnm, LV_BTNMATRIX_PART_BTN, &draw_rect_ina_dsc);
                     lv_obj_init_draw_label_dsc(btnm, LV_BTNMATRIX_PART_BTN, &draw_label_ina_dsc);
                     draw_label_ina_dsc.flag = txt_flag;
                     btnm->state = state_ori;
+                    _lv_obj_disable_style_caching(btnm, false);
                     disabled_inited = true;
                 }
                 draw_rect_dsc_act = &draw_rect_ina_dsc;
@@ -912,7 +918,7 @@ static lv_res_t lv_btnmatrix_signal(lv_obj_t * btnm, lv_signal_t sign, void * pa
             /*Toggle the button if enabled*/
             if(button_is_tgl_enabled(ext->ctrl_bits[ext->btn_id_pr]) &&
                !button_is_inactive(ext->ctrl_bits[ext->btn_id_pr])) {
-                if(button_get_tgl_state(ext->ctrl_bits[ext->btn_id_pr])) {
+                if(button_get_tgl_state(ext->ctrl_bits[ext->btn_id_pr]) && !ext->one_check) {
                     ext->ctrl_bits[ext->btn_id_pr] &= (~LV_BTNMATRIX_CTRL_CHECK_STATE);
                 }
                 else {

src/lv_widgets/lv_calendar.c

@@ -705,6 +705,7 @@ static void draw_header(lv_obj_t * calendar, const lv_area_t * mask)
     strcpy(&txt_buf[5], get_month_name(calendar, ext->showed_date.month));
 
     calendar->state = LV_STATE_DEFAULT;
+    _lv_obj_disable_style_caching(calendar, true);
 
     lv_draw_label_dsc_t label_dsc;
     lv_draw_label_dsc_init(&label_dsc);
@@ -738,6 +739,7 @@ static void draw_header(lv_obj_t * calendar, const lv_area_t * mask)
     lv_draw_label(&header_area, mask, &label_dsc, LV_SYMBOL_RIGHT, NULL);
 
     calendar->state = state_ori;    /*Restore the state*/
+    _lv_obj_disable_style_caching(calendar, false);
 }
 
 /**
@@ -810,6 +812,7 @@ static void draw_dates(lv_obj_t * calendar, const lv_area_t * clip_area)
     /*The state changes without re-caching the styles, disable the use of cache*/
     lv_state_t state_ori = calendar->state;
     calendar->state = LV_STATE_DEFAULT;
+    _lv_obj_disable_style_caching(calendar, true);
 
     lv_state_t month_state = LV_STATE_DISABLED;
 
@@ -856,6 +859,7 @@ static void draw_dates(lv_obj_t * calendar, const lv_area_t * clip_area)
 
         if(box_area.y1 > clip_area->y2) {
             calendar->state = state_ori;
+            _lv_obj_disable_style_caching(calendar, false);
             return;
         }
 
@@ -926,6 +930,7 @@ static void draw_dates(lv_obj_t * calendar, const lv_area_t * clip_area)
         }
     }
     calendar->state = state_ori;
+    _lv_obj_disable_style_caching(calendar, false);
 
 
 }

src/lv_widgets/lv_chart.c

@@ -152,7 +152,7 @@ lv_obj_t * lv_chart_create(lv_obj_t * par, const lv_obj_t * copy)
         _lv_memcpy(&ext->secondary_y_axis, &ext_copy->secondary_y_axis, sizeof(lv_chart_axis_cfg_t));
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(chart, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(chart, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("chart created");

src/lv_widgets/lv_cont.c

@@ -112,7 +112,7 @@ lv_obj_t * lv_cont_create(lv_obj_t * par, const lv_obj_t * copy)
         ext->layout              = copy_ext->layout;
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(cont, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(cont, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("container created");

src/lv_widgets/lv_cpicker.c

@@ -151,7 +151,7 @@ lv_obj_t * lv_cpicker_create(lv_obj_t * par, const lv_obj_t * copy)
 
         lv_style_list_copy(&ext->knob.style_list, &copy_ext->knob.style_list);
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(cpicker, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(cpicker, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
     refr_knob_pos(cpicker);
 

src/lv_widgets/lv_dropdown.c

@@ -609,7 +609,7 @@ void lv_dropdown_open(lv_obj_t * ddlist)
     lv_style_list_copy(lv_obj_get_style_list(ext->page, LV_PAGE_PART_BG), &ext->style_page);
     lv_style_list_copy(lv_obj_get_style_list(ext->page, LV_PAGE_PART_SCROLLBAR), &ext->style_scrlbar);
     lv_obj_clean_style_list(ext->page, LV_PAGE_PART_SCROLLABLE);
-    lv_obj_refresh_style(ext->page, LV_STYLE_PROP_ALL);
+    lv_obj_refresh_style(ext->page, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
 
     lv_obj_t * label = lv_label_create(ext->page, NULL);
     lv_label_set_text_static(label, ext->options);
@@ -965,7 +965,7 @@ static lv_res_t lv_dropdown_signal(lv_obj_t * ddlist, lv_signal_t sign, void * p
         const lv_font_t * font = lv_obj_get_style_text_font(ddlist, LV_DROPDOWN_PART_MAIN);
         lv_obj_set_height(ddlist, top + bottom + lv_font_get_line_height(font));
 
-        if(ext->page) lv_obj_refresh_style(ext->page, LV_STYLE_PROP_ALL);
+        if(ext->page) lv_obj_refresh_style(ext->page, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
     else if(sign == LV_SIGNAL_CONTROL) {
 #if LV_USE_GROUP
@@ -1134,8 +1134,10 @@ static void draw_box(lv_obj_t * ddlist, const lv_area_t * clip_area, uint16_t id
     lv_obj_t * page = ext->page;
     lv_state_t state_orig = page->state;
 
-    page->state = LV_STATE_DEFAULT;
+    if(state != page->state) {
-    page->state |= state;
+        _lv_obj_disable_style_caching(ddlist, true);
+        page->state = state;
+    }
 
     /*Draw a rectangle under the selected item*/
     const lv_font_t * font    = lv_obj_get_style_text_font(ddlist, LV_DROPDOWN_PART_LIST);
@@ -1159,6 +1161,7 @@ static void draw_box(lv_obj_t * ddlist, const lv_area_t * clip_area, uint16_t id
     lv_draw_rect(&rect_area, clip_area, &sel_rect);
 
     page->state = state_orig;
+    _lv_obj_disable_style_caching(ddlist, false);
 }
 
 
@@ -1169,8 +1172,10 @@ static void draw_box_label(lv_obj_t * ddlist, const lv_area_t * clip_area, uint1
     lv_obj_t * page = ext->page;
     lv_state_t state_orig = page->state;
 
-    page->state = LV_STATE_DEFAULT;
+    if(state != page->state) {
-    page->state |= state;
+        page->state =  state;
+        _lv_obj_disable_style_caching(ddlist, true);
+    }
 
     lv_draw_label_dsc_t label_dsc;
     lv_draw_label_dsc_init(&label_dsc);
@@ -1204,6 +1209,7 @@ static void draw_box_label(lv_obj_t * ddlist, const lv_area_t * clip_area, uint1
         lv_draw_label(&label->coords, &mask_sel, &label_dsc, lv_label_get_text(label), NULL);
     }
     page->state = state_orig;
+    _lv_obj_disable_style_caching(ddlist, false);
 }
 
 /**

src/lv_widgets/lv_gauge.c

@@ -124,7 +124,7 @@ lv_obj_t * lv_gauge_create(lv_obj_t * par, const lv_obj_t * copy)
         ext->format_cb   = copy_ext->format_cb;
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(gauge, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(gauge, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("gauge created");

src/lv_widgets/lv_img.c

@@ -121,7 +121,7 @@ lv_obj_t * lv_img_create(lv_obj_t * par, const lv_obj_t * copy)
         lv_img_set_src(img, copy_ext->src);
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(img, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(img, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("image created");

src/lv_widgets/lv_imgbtn.c

@@ -100,7 +100,7 @@ lv_obj_t * lv_imgbtn_create(lv_obj_t * par, const lv_obj_t * copy)
 #endif
         ext->tiled = copy_ext->tiled;
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(imgbtn, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(imgbtn, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("image button created");

src/lv_widgets/lv_label.c

@@ -161,7 +161,7 @@ lv_obj_t * lv_label_create(lv_obj_t * par, const lv_obj_t * copy)
         ext->dot_end       = copy_ext->dot_end;
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(new_label, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(new_label, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("label created");

src/lv_widgets/lv_led.c

@@ -88,7 +88,7 @@ lv_obj_t * lv_led_create(lv_obj_t * par, const lv_obj_t * copy)
         ext->bright             = copy_ext->bright;
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(led, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(led, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("led created");

src/lv_widgets/lv_line.c

@@ -95,7 +95,7 @@ lv_obj_t * lv_line_create(lv_obj_t * par, const lv_obj_t * copy)
         lv_line_set_points(line, copy_ext->point_array, copy_ext->point_num);
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(line, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(line, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("line created");

src/lv_widgets/lv_linemeter.c

@@ -96,7 +96,7 @@ lv_obj_t * lv_linemeter_create(lv_obj_t * par, const lv_obj_t * copy)
         ext->cur_value             = copy_ext->cur_value;
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(linemeter, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(linemeter, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("line meter created");

src/lv_widgets/lv_list.c

@@ -115,7 +115,7 @@ lv_obj_t * lv_list_create(lv_obj_t * par, const lv_obj_t * copy)
         }
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(list, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(list, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("list created");

src/lv_widgets/lv_msgbox.c

@@ -127,7 +127,7 @@ lv_obj_t * lv_msgbox_create(lv_obj_t * par, const lv_obj_t * copy)
         if(copy_ext->btnm) ext->btnm = lv_btnmatrix_create(mbox, copy_ext->btnm);
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(mbox, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(mbox, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("message box created");

src/lv_widgets/lv_objmask.c

@@ -86,7 +86,7 @@ lv_obj_t * lv_objmask_create(lv_obj_t * par, const lv_obj_t * copy)
         /* lv_objmask_ext_t * copy_ext = lv_obj_get_ext_attr(copy); */
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(objmask, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(objmask, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("object mask created");

src/lv_widgets/lv_roller.c

@@ -135,7 +135,7 @@ lv_obj_t * lv_roller_create(lv_obj_t * par, const lv_obj_t * copy)
         lv_obj_set_signal_cb(scrl, lv_roller_scrl_signal);
 
         lv_style_list_copy(&ext->style_sel, &copy_ext->style_sel);
-        lv_obj_refresh_style(roller, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(roller, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("roller created");

src/lv_widgets/lv_slider.c

@@ -103,7 +103,7 @@ lv_obj_t * lv_slider_create(lv_obj_t * par, const lv_obj_t * copy)
         lv_area_copy(&ext->left_knob_area, &copy_ext->left_knob_area);
         lv_area_copy(&ext->right_knob_area, &copy_ext->right_knob_area);
 
-        lv_obj_refresh_style(slider, LV_OBJ_PART_ALL);
+        lv_obj_refresh_style(slider, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("slider created");

src/lv_widgets/lv_spinbox.c

@@ -106,7 +106,7 @@ lv_obj_t * lv_spinbox_create(lv_obj_t * par, const lv_obj_t * copy)
         lv_spinbox_set_rollover(spinbox, copy_ext->rollover);
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(spinbox, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(spinbox, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     lv_spinbox_updatevalue(spinbox);

src/lv_widgets/lv_spinner.c

@@ -106,7 +106,7 @@ lv_obj_t * lv_spinner_create(lv_obj_t * par, const lv_obj_t * copy)
         ext->time                   = copy_ext->time;
         ext->anim_dir               = copy_ext->anim_dir;
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(spinner, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(spinner, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     lv_spinner_set_type(spinner, ext->anim_type);

src/lv_widgets/lv_switch.c

@@ -100,7 +100,7 @@ lv_obj_t * lv_switch_create(lv_obj_t * par, const lv_obj_t * copy)
         lv_switch_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
 
         lv_style_list_copy(&ext->style_knob, &copy_ext->style_knob);
-        lv_obj_refresh_style(sw, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(sw, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     /*Refresh the style with new signal function*/

src/lv_widgets/lv_table.c

@@ -110,7 +110,7 @@ lv_obj_t * lv_table_create(lv_obj_t * par, const lv_obj_t * copy)
         lv_table_set_col_cnt(table, copy_ext->col_cnt);
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(table, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(table, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("table created");

src/lv_widgets/lv_tabview.c

@@ -180,11 +180,11 @@ lv_obj_t * lv_tabview_create(lv_obj_t * par, const lv_obj_t * copy)
                                                                                                               LV_PAGE_PART_SCROLLABLE));
             lv_style_list_copy(lv_obj_get_style_list(new_tab, LV_PAGE_PART_SCROLLBAR), lv_obj_get_style_list(copy_tab,
                                                                                                              LV_PAGE_PART_SCROLLBAR));
-            lv_obj_refresh_style(new_tab, LV_STYLE_PROP_ALL);
+            lv_obj_refresh_style(new_tab, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
         }
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(tabview, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(tabview, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     tabview_realign(tabview);

src/lv_widgets/lv_textarea.c

@@ -188,7 +188,7 @@ lv_obj_t * lv_textarea_create(lv_obj_t * par, const lv_obj_t * copy)
         if(copy_ext->one_line) lv_textarea_set_one_line(ta, true);
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(ta, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(ta, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
 #if LV_USE_ANIMATION

src/lv_widgets/lv_tileview.c

@@ -133,7 +133,7 @@ lv_obj_t * lv_tileview_create(lv_obj_t * par, const lv_obj_t * copy)
 #endif
 
         /*Refresh the style with new signal function*/
-        lv_obj_refresh_style(new_tileview, LV_STYLE_PROP_ALL);
+        lv_obj_refresh_style(new_tileview, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
     }
 
     LV_LOG_INFO("tileview created");

src/lv_widgets/lv_win.c

@@ -156,7 +156,7 @@ lv_obj_t * lv_win_create(lv_obj_t * par, const lv_obj_t * copy)
     }
 
     /*Refresh the style with new signal function*/
-    lv_obj_refresh_style(new_win, LV_STYLE_PROP_ALL);
+    lv_obj_refresh_style(new_win, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
 
     lv_win_realign(new_win);
 

tests/Makefile

@@ -30,6 +30,10 @@ CSRCS += lv_test_assert.c
 CSRCS += lv_test_core/lv_test_core.c
 CSRCS += lv_test_core/lv_test_obj.c
 CSRCS += lv_test_core/lv_test_style.c
+CSRCS += lv_test_core/lv_test_font_loader.c
+CSRCS += lv_test_fonts/font_1.c
+CSRCS += lv_test_fonts/font_2.c
+CSRCS += lv_test_fonts/font_3.c
 
 OBJEXT ?= .o
 

tests/build.py

@@ -120,6 +120,7 @@ minimal_monochrome = {
   "LV_USE_PAGE":0,
   "LV_USE_SPINNER":0,
   "LV_USE_ROLLER":0,
+  "LV_USE_ROTARY":0,
   "LV_USE_SLIDER":0,
   "LV_USE_SPINBOX":0,
   "LV_USE_SWITCH":0,
@@ -196,6 +197,7 @@ all_obj_minimal_features = {
   "LV_USE_PAGE":1,
   "LV_USE_SPINNER":0, #Disabled beacsue needs anim
   "LV_USE_ROLLER":1,
+  "LV_USE_ROTARY":1,
   "LV_USE_SLIDER":1,
   "LV_USE_SPINBOX":1,
   "LV_USE_SWITCH":1,
@@ -274,6 +276,7 @@ all_obj_all_features = {
   "LV_USE_PAGE":1,
   "LV_USE_SPINNER":1,
   "LV_USE_ROLLER":1,
+  "LV_USE_ROTARY":1,
   "LV_USE_SLIDER":1,
   "LV_USE_SPINBOX":1,
   "LV_USE_SWITCH":1,
@@ -365,6 +368,7 @@ advanced_features = {
   "LV_USE_PAGE":1,
   "LV_USE_SPINNER":1,
   "LV_USE_ROLLER":1,
+  "LV_USE_ROTARY":1,
   "LV_USE_SLIDER":1,
   "LV_USE_SPINBOX":1,
   "LV_USE_SWITCH":1,

tests/lv_test_assert.c

@@ -97,6 +97,15 @@ void lv_test_error(const char * s, ...)
     exit(1);
 }
 
+void lv_test_assert_true(int32_t expression, const char * s)
+{
+    if(!expression) {
+        lv_test_error("   FAIL: %s. (Expected: not zero)", s, expression);
+    } else {
+        lv_test_print("   PASS: %s. (Expected: not zero)", s, expression);
+    }
+}
+
 void lv_test_assert_int_eq(int32_t n_ref, int32_t n_act, const char * s)
 {
     if(n_ref != n_act) {
@@ -134,6 +143,17 @@ void lv_test_assert_str_eq(const char * s_ref, const char * s_act, const char *
     }
 }
 
+
+void lv_test_assert_array_eq(const uint8_t *p_ref, const uint8_t *p_act, int32_t size, const char * s)
+{
+    if(memcmp(p_ref, p_act, size) != 0) {
+        lv_test_error("   FAIL: %s. (Expected: all %d bytes should be equal)", s, size);
+    } else {
+        lv_test_print("   PASS: %s. (Expected: all %d bytes should be equal)", s, size);
+    }
+}
+
+
 void lv_test_assert_ptr_eq(const void * p_ref, const void * p_act, const char * s)
 {
     if(p_ref != p_act) {

tests/lv_test_assert.h

@@ -32,6 +32,7 @@ extern "C" {
 void lv_test_print(const char * s, ...);
 void lv_test_exit(const char * s, ...);
 void lv_test_error(const char * s, ...);
+void lv_test_assert_true(int32_t expression, const char * s);
 void lv_test_assert_int_eq(int32_t n1, int32_t n2, const char * s);
 void lv_test_assert_int_gt(int32_t n_ref, int32_t n_act, const char * s);
 void lv_test_assert_int_lt(int32_t n_ref, int32_t n_act, const char * s);
@@ -39,6 +40,7 @@ void lv_test_assert_str_eq(const char * str1, const char * str2, const char * s)
 void lv_test_assert_ptr_eq(const void * p_ref, const void * p_act, const char * s);
 void lv_test_assert_color_eq(lv_color_t c_ref, lv_color_t c_act, const char * s);
 void lv_test_assert_img_eq(const char * ref_img_fn, const char * s);
+void lv_test_assert_array_eq(const uint8_t *p_ref, const uint8_t *p_act, int32_t size, const char * s);
 
 /**********************
  *      MACROS

tests/lv_test_core/lv_test_core.c

@@ -12,6 +12,7 @@
 #include "lv_test_core.h"
 #include "lv_test_obj.h"
 #include "lv_test_style.h"
+#include "lv_test_font_loader.h"
 
 /*********************
  *      DEFINES
@@ -46,6 +47,7 @@ void lv_test_core(void)
 
     lv_test_obj();
     lv_test_style();
+    lv_test_font_loader();
 }
 
 

tests/lv_test_core/lv_test_font_loader.c

@@ -0,0 +1,213 @@
+/**
+ * @file lv_test_font_loader.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+#include "../lv_test_assert.h"
+#if LV_BUILD_TEST
+#include "../lvgl.h"
+#include "../src/lv_font/lv_font_fmt_txt.h"
+#include "../src/lv_font/lv_font.h"
+#include "../src/lv_font/lv_font_loader.h"
+
+#include "lv_test_font_loader.h" 
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+#if LV_USE_FILESYSTEM
+static int compare_fonts(lv_font_t * f1, lv_font_t * f2);
+#endif
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+extern lv_font_t font_1;
+extern lv_font_t font_2;
+extern lv_font_t font_3;
+
+void lv_test_font_loader(void)
+{
+#if LV_USE_FILESYSTEM
+    lv_font_t * font_1_bin = lv_font_load("f:font_1.fnt");
+    lv_font_t * font_2_bin = lv_font_load("f:font_2.fnt");
+    lv_font_t * font_3_bin = lv_font_load("f:font_3.fnt");
+
+    compare_fonts(&font_1, font_1_bin);
+    compare_fonts(&font_2, font_2_bin);
+    compare_fonts(&font_3, font_3_bin);
+
+    lv_font_free(font_1_bin);
+    lv_font_free(font_2_bin);
+    lv_font_free(font_3_bin);
+#endif
+}
+
+#if LV_USE_FILESYSTEM
+static int compare_fonts(lv_font_t * f1, lv_font_t * f2)
+{
+    lv_test_assert_true(f1 != NULL && f2 != NULL, "font not null");
+
+    lv_test_assert_ptr_eq(f1->get_glyph_dsc, f2->get_glyph_dsc, "glyph_dsc");
+    lv_test_assert_ptr_eq(f1->get_glyph_bitmap, f2->get_glyph_bitmap, "glyph_bitmap");
+    lv_test_assert_int_eq(f1->line_height, f2->line_height, "line_height");
+    lv_test_assert_int_eq(f1->base_line, f2->base_line, "base_line");
+#if !(LVGL_VERSION_MAJOR == 6 && LVGL_VERSION_MINOR == 0)
+    lv_test_assert_int_eq(f1->subpx, f2->subpx, "subpx");
+#endif
+    lv_font_fmt_txt_dsc_t * dsc1 = (lv_font_fmt_txt_dsc_t *) f1->dsc;
+    lv_font_fmt_txt_dsc_t * dsc2 = (lv_font_fmt_txt_dsc_t *) f2->dsc;
+
+    lv_test_assert_int_eq(dsc1->kern_scale, dsc2->kern_scale, "kern_scale");
+    lv_test_assert_int_eq(dsc1->cmap_num, dsc2->cmap_num, "cmap_num");
+    lv_test_assert_int_eq(dsc1->bpp, dsc2->bpp, "bpp");
+    lv_test_assert_int_eq(dsc1->kern_classes, dsc2->kern_classes, "kern_classes");
+    lv_test_assert_int_eq(dsc1->bitmap_format, dsc2->bitmap_format, "bitmap_format");
+
+    // cmaps
+    int total_glyphs = 0;
+    for(int i = 0; i < dsc1->cmap_num; ++i) {
+        lv_font_fmt_txt_cmap_t * cmaps1 = (lv_font_fmt_txt_cmap_t *) &dsc1->cmaps[i];
+        lv_font_fmt_txt_cmap_t * cmaps2 = (lv_font_fmt_txt_cmap_t *) &dsc2->cmaps[i];
+
+        lv_test_assert_int_eq(cmaps1->range_start, cmaps2->range_start, "range_start");
+        lv_test_assert_int_eq(cmaps1->range_length, cmaps2->range_length, "range_length");
+        lv_test_assert_int_eq(cmaps1->glyph_id_start, cmaps2->glyph_id_start, "glyph_id_start");
+        lv_test_assert_int_eq(cmaps1->type, cmaps2->type, "type");
+        lv_test_assert_int_eq(cmaps1->list_length, cmaps2->list_length, "list_length");
+
+        if(cmaps1->unicode_list != NULL && cmaps2->unicode_list != NULL) {
+            lv_test_assert_true(cmaps1->unicode_list && cmaps2->unicode_list, "unicode_list");
+
+            lv_test_assert_array_eq(
+                    (uint8_t *) cmaps1->unicode_list,
+                    (uint8_t *) cmaps2->unicode_list,
+                    sizeof(uint16_t) * cmaps1->list_length,
+                    "unicode_list");
+            total_glyphs += cmaps1->list_length;
+        }
+        else {
+            total_glyphs += cmaps1->range_length;
+            lv_test_assert_ptr_eq(cmaps1->unicode_list, cmaps2->unicode_list, "unicode_list");
+        }
+
+        if(cmaps1->glyph_id_ofs_list != NULL && cmaps2->glyph_id_ofs_list != NULL) {
+            uint8_t * ids1 = (uint8_t *) cmaps1->glyph_id_ofs_list;
+            uint8_t * ids2 = (uint8_t *) cmaps2->glyph_id_ofs_list;
+
+            lv_test_assert_array_eq(ids1, ids2, cmaps1->list_length, "glyph_id_ofs_list");
+        }
+        else {
+            lv_test_assert_ptr_eq(cmaps1->glyph_id_ofs_list, cmaps2->glyph_id_ofs_list, "glyph_id_ofs_list");
+        }
+    }
+
+    // kern_dsc
+    if (dsc1->kern_classes == 1 && dsc2->kern_classes == 1) {
+        lv_font_fmt_txt_kern_classes_t * kern1 = (lv_font_fmt_txt_kern_classes_t *) dsc1->kern_dsc;
+        lv_font_fmt_txt_kern_classes_t * kern2 = (lv_font_fmt_txt_kern_classes_t *) dsc2->kern_dsc;
+        if (kern1 != NULL && kern2 != NULL) {
+            lv_test_assert_int_eq(kern1->right_class_cnt, kern2->right_class_cnt, "right_class_cnt");
+            lv_test_assert_int_eq(kern1->left_class_cnt, kern2->left_class_cnt, "left_class_cnt");
+
+            lv_test_assert_array_eq(
+                    (uint8_t *) kern1->left_class_mapping,
+                    (uint8_t *) kern2->left_class_mapping,
+                    kern1->left_class_cnt,
+                    "left_class_mapping");
+
+            lv_test_assert_array_eq(
+                    (uint8_t *) kern1->right_class_mapping,
+                    (uint8_t *) kern2->right_class_mapping,
+                    kern1->right_class_cnt,
+                    "right_class_mapping");
+
+            lv_test_assert_array_eq(
+                    (uint8_t *) kern1->class_pair_values,
+                    (uint8_t *) kern2->class_pair_values,
+                    kern1->right_class_cnt * kern1->left_class_cnt,
+                    "class_pair_values");
+        }
+        else {
+            lv_test_assert_ptr_eq(kern1, kern2, "kern");
+        }
+    }
+    else if (dsc1->kern_classes == 0 && dsc2->kern_classes == 0) {
+        lv_font_fmt_txt_kern_pair_t * kern1 = (lv_font_fmt_txt_kern_pair_t *) dsc1->kern_dsc;
+        lv_font_fmt_txt_kern_pair_t * kern2 = (lv_font_fmt_txt_kern_pair_t *) dsc2->kern_dsc;
+        if (kern1 != NULL && kern2 != NULL) {
+            lv_test_assert_int_eq(kern1->glyph_ids_size, kern2->glyph_ids_size, "glyph_ids_size");
+            lv_test_assert_int_eq(kern1->pair_cnt, kern2->pair_cnt, "pair_cnt");
+
+            int ids_size;
+
+            if (kern1->glyph_ids_size == 0) {
+                ids_size = sizeof(int8_t) * 2 * kern1->pair_cnt;
+            }
+            else {
+                ids_size = sizeof(int16_t) * 2 * kern1->pair_cnt;
+            }
+
+            lv_test_assert_array_eq(kern1->glyph_ids, kern2->glyph_ids, ids_size, "glyph_ids");
+            lv_test_assert_array_eq(
+                    (uint8_t * ) kern1->values,
+                    (uint8_t * ) kern2->values,
+                    kern1->pair_cnt,
+                    "glyph_values");
+        }
+    }
+
+    lv_font_fmt_txt_glyph_dsc_t * glyph_dsc1 = (lv_font_fmt_txt_glyph_dsc_t *) dsc1->glyph_dsc;
+    lv_font_fmt_txt_glyph_dsc_t * glyph_dsc2 = (lv_font_fmt_txt_glyph_dsc_t *) dsc2->glyph_dsc;
+
+    for(int i = 0; i < total_glyphs; ++i) {
+        if (i < total_glyphs - 1) {
+            int size1 = glyph_dsc1[i+1].bitmap_index - glyph_dsc1[i].bitmap_index;
+
+            if (size1 > 0) {
+                lv_test_assert_array_eq(
+                        dsc1->glyph_bitmap + glyph_dsc1[i].bitmap_index,
+                        dsc2->glyph_bitmap + glyph_dsc2[i].bitmap_index,
+                        size1 - 1, "glyph_bitmap");
+            }
+        }
+        lv_test_assert_int_eq(glyph_dsc1[i].adv_w, glyph_dsc2[i].adv_w, "adv_w");
+        lv_test_assert_int_eq(glyph_dsc1[i].box_w, glyph_dsc2[i].box_w, "box_w");
+        lv_test_assert_int_eq(glyph_dsc1[i].box_h, glyph_dsc2[i].box_h, "box_h");
+        lv_test_assert_int_eq(glyph_dsc1[i].ofs_x, glyph_dsc2[i].ofs_x, "ofs_x");
+        lv_test_assert_int_eq(glyph_dsc1[i].ofs_y, glyph_dsc2[i].ofs_y, "ofs_y");
+    }
+
+    LV_LOG_INFO("No differences found!");
+    return 0;
+}
+#endif
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#endif // LV_BUILD_TEST
+

tests/lv_test_core/lv_test_font_loader.h

@@ -0,0 +1,39 @@
+/**
+ * @file lv_font_loader.h
+ *
+ */
+
+#ifndef LV_TEST_FONT_LOADER_H
+#define LV_TEST_FONT_LOADER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+void lv_test_font_loader(void);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*LV_TEST_FONT_LOADER_H*/
+

tests/lv_test_fonts/font_3.c

@@ -0,0 +1,953 @@
+#include "lvgl/lvgl.h"
+
+/*******************************************************************************
+ * Size: 20 px
+ * Bpp: 4
+ * Opts: --bpp 4 --size 20 --font ../RobotoMono-Regular.ttf -r 0x20-0x7f --format lvgl -o ..\generated_fonts/font_3.c
+ ******************************************************************************/
+
+#ifndef FONT_3
+#define FONT_3 1
+#endif
+
+#if FONT_3
+
+/*-----------------
+ *    BITMAPS
+ *----------------*/
+
+/*Store the image of the glyphs*/
+static LV_ATTRIBUTE_LARGE_CONST const uint8_t gylph_bitmap[] = {
+    /* U+20 " " */
+
+    /* U+21 "!" */
+    0x1f, 0xb0, 0xf, 0xfe, 0x69, 0x10, 0x76, 0x40,
+    0x30, 0x81, 0x76, 0x98, 0xb0,
+
+    /* U+22 "\"" */
+    0x8e, 0x0, 0x7b, 0x0, 0x7c, 0x60, 0x11, 0x80,
+    0x80, 0x43, 0xca, 0x0, 0x37,
+
+    /* U+23 "#" */
+    0x0, 0xc5, 0xe6, 0x7, 0xe6, 0x1, 0xc8, 0x6,
+    0xa, 0x6, 0x1, 0xde, 0x40, 0xf, 0x30, 0xf,
+    0x2a, 0x0, 0x15, 0x40, 0x15, 0x7f, 0x8d, 0xbf,
+    0xc6, 0xde, 0xe1, 0xd2, 0xe0, 0xf2, 0xe0, 0xf2,
+    0x80, 0x8d, 0x81, 0x2d, 0xa1, 0x2c, 0x60, 0x11,
+    0x88, 0x80, 0x84, 0x40, 0x1d, 0xc4, 0x0, 0xd2,
+    0x0, 0xc2, 0x25, 0x61, 0x13, 0x30, 0x40, 0xd,
+    0xdc, 0x35, 0xee, 0x1a, 0xf6, 0x3, 0xdd, 0x4,
+    0x5c, 0x84, 0xdf, 0x80, 0xa0, 0x1, 0x90, 0xc1,
+    0x90, 0xc0, 0x2d, 0x21, 0xd, 0x20, 0xf, 0x1b,
+    0x80, 0x11, 0x0, 0x18,
+
+    /* U+24 "$" */
+    0x0, 0xcb, 0xe2, 0x1, 0xff, 0xc4, 0x78, 0xb,
+    0x40, 0xd, 0xb0, 0x64, 0xb6, 0xe0, 0x8, 0x27,
+    0xed, 0xd0, 0xc0, 0x82, 0x4, 0x0, 0xa, 0x41,
+    0xc0, 0x40, 0x38, 0xc8, 0x0, 0xe0, 0xe0, 0x12,
+    0x6b, 0x5, 0x84, 0x5a, 0x0, 0x70, 0xe9, 0xa5,
+    0xea, 0x80, 0x62, 0xcc, 0x29, 0x54, 0x80, 0x71,
+    0xd6, 0x93, 0x21, 0x29, 0x0, 0x45, 0x21, 0xaf,
+    0x4a, 0x1, 0x9c, 0xd, 0x2, 0x44, 0x2, 0xa0,
+    0xd1, 0x71, 0xf8, 0x86, 0x31, 0x38, 0x44, 0x9b,
+    0xb8, 0x97, 0x0, 0x26, 0xd6, 0x1e, 0xa1, 0x0,
+    0xe1, 0x0, 0xe0,
+
+    /* U+25 "%" */
+    0x7, 0xee, 0x40, 0x7, 0xc9, 0x10, 0xb7, 0x50,
+    0xf, 0x61, 0x32, 0xa7, 0x80, 0xf1, 0x80, 0x42,
+    0x1, 0xd2, 0x66, 0x0, 0x69, 0x98, 0x97, 0x45,
+    0xe0, 0x2, 0x55, 0x66, 0xab, 0xc1, 0x28, 0x6,
+    0xae, 0xe5, 0x8b, 0x48, 0x7, 0x84, 0x41, 0x6,
+    0x80, 0x1f, 0x89, 0xa0, 0x3, 0xfa, 0x11, 0x13,
+    0xdc, 0x70, 0xc, 0x6b, 0xc, 0xca, 0x88, 0x20,
+    0x5, 0x8, 0x78, 0xa8, 0xc5, 0x80, 0x13, 0x40,
+    0x7, 0xfb, 0x4c, 0x31, 0x51, 0x8b, 0x0, 0x3c,
+    0xcc, 0xa8, 0x82, 0x0,
+
+    /* U+26 "&" */
+    0x0, 0x26, 0x7e, 0xb0, 0x7, 0x15, 0x9b, 0xc,
+    0xa8, 0x6, 0xa0, 0xa9, 0xc1, 0xe0, 0xc, 0x40,
+    0xe0, 0x13, 0x80, 0x63, 0x7, 0x6, 0x1b, 0x0,
+    0xd4, 0x12, 0xf2, 0xae, 0x1, 0x8d, 0x8e, 0x1a,
+    0x80, 0x38, 0x90, 0x1, 0x40, 0x1c, 0x38, 0x50,
+    0x1a, 0x20, 0xbc, 0x70, 0x32, 0xf2, 0x34, 0x1a,
+    0x22, 0x40, 0x60, 0x65, 0x47, 0x51, 0x23, 0x10,
+    0xa, 0x8a, 0xa, 0x41, 0x5, 0x0, 0x2a, 0x0,
+    0x30, 0x40, 0x5d, 0x45, 0xc0, 0x84, 0x1, 0x6a,
+    0xa3, 0xb4, 0x71, 0xb2, 0x0,
+
+    /* U+27 "'" */
+    0x2f, 0x50, 0xe, 0x10, 0x3, 0x81, 0x88,
+
+    /* U+28 "(" */
+    0x0, 0xe1, 0x0, 0xd9, 0x20, 0x15, 0x8c, 0x80,
+    0x1d, 0x38, 0x40, 0x10, 0xa6, 0x0, 0x70, 0x90,
+    0xa, 0xc4, 0xc0, 0x2, 0x68, 0x1, 0x28, 0x68,
+    0x4, 0x40, 0x20, 0x10, 0x81, 0x80, 0x70, 0x80,
+    0x42, 0x2, 0x1, 0x18, 0x18, 0x4, 0xe1, 0xe0,
+    0x11, 0xa, 0x80, 0x67, 0x31, 0x0, 0xac, 0x24,
+    0x2, 0x25, 0x60, 0xd, 0x61, 0x40, 0x10, 0xea,
+    0xb8, 0x4, 0x7a, 0x80,
+
+    /* U+29 ")" */
+    0x20, 0xe, 0xe9, 0x0, 0xde, 0xd0, 0x1, 0x1c,
+    0x39, 0x80, 0x4e, 0x5e, 0x1, 0xa8, 0xcc, 0x1,
+    0x28, 0x50, 0x4, 0x42, 0x80, 0x19, 0x48, 0x40,
+    0x21, 0x2, 0x0, 0x8c, 0x1c, 0x2, 0x10, 0xe,
+    0x10, 0x70, 0x8, 0xc0, 0x80, 0x27, 0x11, 0x0,
+    0x44, 0x80, 0x12, 0x87, 0x80, 0x5c, 0x2a, 0x0,
+    0x34, 0x80, 0xb, 0x8d, 0x80, 0x14, 0x1a, 0x1,
+    0x7e, 0x8, 0x4,
+
+    /* U+2A "*" */
+    0x0, 0xd3, 0xe2, 0x1, 0xf0, 0x80, 0x80, 0x61,
+    0x0, 0x78, 0x6, 0x12, 0xeb, 0x41, 0x10, 0x36,
+    0xc0, 0xaa, 0xae, 0x47, 0xe4, 0xc0, 0xeb, 0xb0,
+    0x0, 0xdb, 0xd2, 0x1, 0x50, 0xab, 0x98, 0x6,
+    0x66, 0x45, 0x8d, 0x0, 0x43, 0x24, 0xc3, 0x8,
+    0xe0, 0x1, 0xbe, 0x0, 0x3b, 0xc0,
+
+    /* U+2B "+" */
+    0x0, 0xd1, 0x0, 0xf, 0xca, 0xc0, 0x1f, 0xfd,
+    0x6d, 0xff, 0x88, 0x7f, 0xee, 0x62, 0x28, 0x0,
+    0x45, 0xaf, 0x76, 0x21, 0xdd, 0xb0, 0x3, 0xff,
+    0xa4,
+
+    /* U+2C "," */
+    0xa, 0xf4, 0x1, 0x0, 0x9c, 0x18, 0x8, 0x49,
+    0x46, 0x1, 0x69, 0x80,
+
+    /* U+2D "-" */
+    0x78, 0x8f, 0x25, 0x3b, 0xfb, 0x40,
+
+    /* U+2E "." */
+    0x8, 0xc3, 0x17, 0x39, 0x14, 0xf,
+
+    /* U+2F "/" */
+    0x0, 0xf6, 0x68, 0x7, 0x88, 0xe8, 0x3, 0xd4,
+    0xc, 0x1, 0xe6, 0x41, 0x0, 0xe4, 0x1e, 0x0,
+    0xf7, 0x2, 0x80, 0x79, 0x58, 0x3, 0xcc, 0x14,
+    0x1, 0xed, 0x23, 0x0, 0xe1, 0x4a, 0x0, 0xf3,
+    0x2, 0x80, 0x7a, 0x90, 0x80, 0x38, 0xcb, 0x40,
+    0x3d, 0x40, 0xc0, 0x1e, 0x65, 0x0, 0xf2, 0x87,
+    0x0, 0x78,
+
+    /* U+30 "0" */
+    0x0, 0x25, 0xff, 0xb1, 0x0, 0x25, 0xb5, 0x66,
+    0x15, 0xa8, 0x2, 0xc7, 0xe6, 0x5e, 0x34, 0x8,
+    0x32, 0x20, 0x1, 0x90, 0x53, 0x2, 0x0, 0xc2,
+    0x1b, 0xe0, 0xc0, 0x14, 0x48, 0x8, 0x80, 0x21,
+    0xb7, 0x50, 0xe, 0x3c, 0x4b, 0x80, 0xd, 0x58,
+    0x1a, 0x80, 0x10, 0x83, 0x2e, 0x90, 0x8, 0x3,
+    0xc1, 0xe8, 0x3, 0x84, 0xc3, 0xc0, 0x32, 0x86,
+    0xa0, 0xc8, 0x80, 0x56, 0xa, 0x16, 0x3f, 0x32,
+    0xe2, 0x90, 0x2, 0xda, 0xb3, 0xa, 0xd8, 0x0,
+
+    /* U+31 "1" */
+    0x0, 0xc4, 0x80, 0x6, 0xcd, 0xc9, 0xf9, 0x30,
+    0x3, 0x25, 0xd8, 0x1, 0xd6, 0x8e, 0x0, 0x10,
+    0xf, 0xff, 0x78,
+
+    /* U+32 "2" */
+    0x0, 0xc, 0xf7, 0xf4, 0x0, 0x62, 0xf6, 0x56,
+    0x27, 0xd0, 0xa, 0x46, 0xed, 0x38, 0xa4, 0xe0,
+    0x4, 0x34, 0x0, 0xa0, 0x30, 0x5, 0xe4, 0x3,
+    0x18, 0x4, 0x30, 0xa0, 0x19, 0x3, 0x0, 0x3f,
+    0x40, 0x30, 0x7, 0xd2, 0x52, 0x20, 0x1e, 0x76,
+    0x56, 0x0, 0xf2, 0x41, 0xd0, 0x7, 0x8e, 0xcb,
+    0x40, 0x3c, 0x3a, 0x3e, 0x20, 0x1e, 0xc1, 0xd2,
+    0x0, 0xf5, 0x91, 0xa3, 0xbf, 0x18, 0x28, 0x1c,
+    0x47, 0x94,
+
+    /* U+33 "3" */
+    0x0, 0xc, 0xf7, 0xf4, 0x0, 0x43, 0xec, 0xae,
+    0xaf, 0xa0, 0xb, 0x1a, 0xb8, 0xb7, 0x26, 0x4,
+    0x15, 0x0, 0xa8, 0x30, 0x3b, 0x80, 0x1f, 0xfc,
+    0x2b, 0xf, 0x0, 0x85, 0xe7, 0x59, 0xd4, 0x2,
+    0x38, 0x62, 0x1c, 0x0, 0xc5, 0xfe, 0xb3, 0xb4,
+    0x0, 0xf2, 0x78, 0x78, 0x8, 0x80, 0x31, 0xa,
+    0x87, 0x60, 0x7, 0x9, 0x81, 0x92, 0x0, 0x4c,
+    0x8, 0x1c, 0x17, 0x68, 0xb9, 0x28, 0x2, 0xe6,
+    0x57, 0x57, 0xd1,
+
+    /* U+34 "4" */
+    0x0, 0xf1, 0xff, 0x80, 0x3f, 0x78, 0x7, 0xf3,
+    0x18, 0x7, 0xe1, 0x94, 0x30, 0xf, 0xac, 0x28,
+    0x3, 0xe4, 0x58, 0x10, 0xf, 0xa4, 0x9c, 0x3,
+    0xe7, 0x29, 0x0, 0xf8, 0xa1, 0x50, 0x3, 0xe9,
+    0xb, 0x0, 0xf8, 0xd0, 0x3b, 0xfe, 0x30, 0xff,
+    0xc, 0x47, 0x84, 0x1e, 0x9, 0xdf, 0xc4, 0x10,
+    0xe0, 0x1f, 0xfc, 0xa0,
+
+    /* U+35 "5" */
+    0x0, 0x7f, 0xfc, 0xa0, 0x20, 0x26, 0x7c, 0x20,
+    0x60, 0xd9, 0x9c, 0x80, 0xc1, 0xc0, 0x1f, 0x8,
+    0x18, 0x7, 0xc4, 0x7, 0x15, 0x6, 0x1, 0x78,
+    0x4b, 0xab, 0xe3, 0x80, 0x38, 0xa7, 0xb9, 0x21,
+    0x4, 0xd, 0xac, 0x22, 0x68, 0xa, 0x0, 0xf9,
+    0x40, 0xc0, 0x3e, 0x30, 0x0, 0xfd, 0x80, 0x62,
+    0x2, 0x13, 0x43, 0x0, 0xa0, 0x30, 0x38, 0x32,
+    0xa7, 0x51, 0xa, 0x5, 0xaa, 0x8c, 0xf, 0x60,
+
+    /* U+36 "6" */
+    0x0, 0x86, 0x37, 0xd4, 0x3, 0x27, 0x39, 0xa3,
+    0x0, 0x45, 0x61, 0x5d, 0x66, 0x1, 0x48, 0x52,
+    0x80, 0x70, 0xa1, 0xa8, 0x7, 0x90, 0x2c, 0x59,
+    0xd4, 0x2, 0x20, 0xde, 0x98, 0xad, 0x10, 0xe0,
+    0x58, 0xee, 0x31, 0x50, 0x5, 0xe, 0x22, 0x92,
+    0x41, 0x0, 0x20, 0x6, 0x50, 0x51, 0x6, 0x0,
+    0xde, 0x3, 0x81, 0xa0, 0x1b, 0x41, 0x90, 0x9c,
+    0x80, 0x4, 0xa2, 0x61, 0xc1, 0xb5, 0x4d, 0xa,
+    0x0, 0x1e, 0x22, 0xa9, 0x31, 0x0,
+
+    /* U+37 "7" */
+    0xef, 0xff, 0xd6, 0xec, 0xde, 0x40, 0x39, 0x9f,
+    0x88, 0x24, 0x3, 0xc2, 0xca, 0x20, 0x1e, 0x60,
+    0x90, 0xf, 0xa4, 0x8c, 0x3, 0xca, 0x36, 0x1,
+    0xf4, 0x8b, 0x0, 0x78, 0xcc, 0xc0, 0x1f, 0x48,
+    0x50, 0x7, 0x85, 0x50, 0x80, 0x3d, 0x21, 0xe0,
+    0x1f, 0x31, 0x20, 0x7, 0x98, 0x68, 0x3, 0xeb,
+    0x6, 0x0, 0xe0,
+
+    /* U+38 "8" */
+    0x0, 0x15, 0x77, 0xea, 0x80, 0x43, 0xaa, 0x8c,
+    0x15, 0x20, 0xb, 0xa, 0xa4, 0xe9, 0x31, 0x2,
+    0x2, 0x80, 0x54, 0x8, 0x6, 0x1, 0xf1, 0x82,
+    0x2, 0x80, 0x54, 0x8, 0x12, 0x75, 0x49, 0xd2,
+    0xa1, 0x0, 0x50, 0x2b, 0x11, 0xa0, 0x1, 0xe5,
+    0x77, 0xe8, 0xb0, 0x42, 0xa, 0x88, 0x16, 0xc9,
+    0x8c, 0x10, 0x3, 0x20, 0x60, 0x0, 0xc0, 0x31,
+    0x80, 0xc, 0x54, 0x80, 0x2b, 0xd, 0xa, 0xd,
+    0xa8, 0xc6, 0x36, 0x4, 0xc4, 0x57, 0x17, 0xc0,
+
+    /* U+39 "9" */
+    0x0, 0x26, 0x7f, 0x51, 0x0, 0x4d, 0x64, 0xca,
+    0xac, 0x10, 0x4, 0x8f, 0xcd, 0xc8, 0xd8, 0x28,
+    0x48, 0x80, 0x18, 0x94, 0x34, 0xc, 0x3, 0x28,
+    0x27, 0x80, 0x7b, 0x80, 0x48, 0xc, 0x3, 0x70,
+    0x1a, 0x4, 0x88, 0x0, 0xdc, 0xc, 0x5c, 0x7e,
+    0x6b, 0x4, 0x4, 0x22, 0x4d, 0x9e, 0x1c, 0x18,
+    0x0, 0xdb, 0xfa, 0xea, 0x24, 0x1, 0xe3, 0x33,
+    0x80, 0x79, 0x34, 0x60, 0x2, 0x5b, 0xeb, 0xd,
+    0x10, 0xb, 0x54, 0x9f, 0xcc, 0x0,
+
+    /* U+3A ":" */
+    0x5f, 0xb0, 0xf0, 0x42, 0x93, 0x62, 0x3c, 0x90,
+    0xf, 0xfe, 0x29, 0xe4, 0x4, 0x9b, 0x97, 0x81,
+    0x90,
+
+    /* U+3B ";" */
+    0x6, 0xfa, 0x0, 0x68, 0x28, 0x3, 0xcd, 0xc0,
+    0x9, 0x90, 0x1, 0xff, 0xcf, 0x4a, 0x60, 0x1,
+    0x2f, 0x0, 0x4, 0x3, 0x70, 0x60, 0x1, 0x9,
+    0x0, 0xf, 0xc0, 0x0,
+
+    /* U+3C "<" */
+    0x0, 0xf9, 0x2c, 0x3, 0x9b, 0x6d, 0x40, 0x2,
+    0xfd, 0x26, 0xd8, 0x33, 0xd0, 0x55, 0xd2, 0x48,
+    0xc3, 0x78, 0xa0, 0x12, 0x28, 0xdd, 0x20, 0x4,
+    0x35, 0xac, 0xb7, 0xae, 0x20, 0x2, 0x9e, 0x83,
+    0x8f, 0x0, 0xc2, 0xfd, 0x24, 0x1, 0xf3, 0x60,
+
+    /* U+3D "=" */
+    0x39, 0x9f, 0xc6, 0xec, 0xdf, 0x95, 0x3f, 0xff,
+    0x30, 0x7, 0xf8, 0xa6, 0x7f, 0x1b, 0x37, 0xf2,
+    0x80,
+
+    /* U+3E ">" */
+    0x3a, 0x30, 0xf, 0x9d, 0x73, 0xa, 0x1, 0xc9,
+    0x8c, 0x75, 0xae, 0x1, 0x8e, 0x7e, 0x9a, 0x3e,
+    0x44, 0x3, 0x2d, 0xe1, 0x32, 0x0, 0x65, 0xbc,
+    0x25, 0x40, 0x28, 0xea, 0x57, 0xea, 0x13, 0xd7,
+    0x39, 0xe8, 0x10, 0x3, 0xa5, 0xeb, 0x0, 0x72,
+    0x5a, 0x0, 0x7c,
+
+    /* U+3F "?" */
+    0x0, 0x1d, 0xf7, 0xea, 0x80, 0x4b, 0x88, 0xaa,
+    0x3a, 0x80, 0x5, 0x86, 0xdd, 0x78, 0xb8, 0x89,
+    0xe0, 0x80, 0x2, 0xe0, 0x43, 0x2e, 0x1, 0x8c,
+    0x4, 0x3, 0xc4, 0xa4, 0x40, 0xf, 0x70, 0x48,
+    0x7, 0xb0, 0xe1, 0x0, 0x3a, 0x4d, 0xdc, 0x1,
+    0xe7, 0x18, 0x0, 0xf8, 0x9c, 0x3, 0xf6, 0x48,
+    0x7, 0xe1, 0x10, 0x7, 0xc3, 0xde, 0x1, 0xf8,
+    0x48, 0x3, 0x0,
+
+    /* U+40 "@" */
+    0x0, 0xd1, 0xbf, 0xae, 0x1, 0xc3, 0xab, 0x76,
+    0xa9, 0xb0, 0xd, 0x4d, 0xac, 0x8f, 0xea, 0xc0,
+    0x4, 0x5b, 0x9, 0xfd, 0x3b, 0xb0, 0x3, 0xe4,
+    0x25, 0x2d, 0x95, 0x44, 0x20, 0x8a, 0x2d, 0xc8,
+    0x2, 0x4, 0x43, 0x2, 0x41, 0x30, 0x72, 0x1,
+    0x77, 0x8, 0x12, 0x80, 0x5, 0xc0, 0x21, 0x30,
+    0xe2, 0x0, 0x10, 0x80, 0xb0, 0x98, 0x0, 0xc0,
+    0x40, 0xc4, 0xc9, 0x44, 0x5e, 0x88, 0xa0, 0x29,
+    0x40, 0x12, 0x67, 0xb, 0x26, 0xc5, 0xb0, 0x5,
+    0xc9, 0xf7, 0x26, 0x5d, 0xa2, 0x0, 0x64, 0xd8,
+    0x44, 0x3a, 0x80, 0x75, 0x4a, 0x55, 0xd9, 0xc0,
+    0x20,
+
+    /* U+41 "A" */
+    0x0, 0xec, 0xf0, 0xf, 0xe1, 0x30, 0x50, 0xf,
+    0xce, 0x0, 0xf0, 0xf, 0xda, 0x8, 0x80, 0xf,
+    0xc8, 0xba, 0x26, 0x1, 0xe4, 0xc, 0x70, 0xb0,
+    0xf, 0x68, 0x38, 0x92, 0x80, 0x79, 0xcc, 0x41,
+    0x48, 0x80, 0x18, 0xc6, 0xc0, 0x16, 0xa, 0x1,
+    0xac, 0x32, 0x66, 0xc, 0x0, 0xca, 0x8, 0xcc,
+    0x50, 0x41, 0x0, 0x11, 0x1b, 0xff, 0x50, 0x20,
+    0x1, 0x43, 0x40, 0x32, 0x7, 0x80, 0x30, 0x10,
+    0x3, 0x9, 0xa0, 0xa, 0x20, 0x3, 0xc8, 0x28,
+
+    /* U+42 "B" */
+    0x4f, 0xfd, 0xd8, 0xa0, 0x18, 0xd9, 0x88, 0x55,
+    0x40, 0xa, 0xe6, 0x55, 0xc6, 0xa8, 0x1, 0xf4,
+    0x86, 0x0, 0x7c, 0x61, 0xe0, 0x1e, 0x1b, 0x5,
+    0x0, 0x5c, 0x42, 0x7c, 0xa8, 0x80, 0x6, 0xee,
+    0x61, 0x36, 0x0, 0xa3, 0xfe, 0xb1, 0xc3, 0x0,
+    0xf2, 0x70, 0x40, 0x7, 0xc6, 0xa, 0x1, 0xf0,
+    0x81, 0x80, 0x7d, 0x0, 0xa0, 0xb, 0x88, 0x4e,
+    0xb1, 0xc0, 0x0, 0xdd, 0xcc, 0x11, 0x80,
+
+    /* U+43 "C" */
+    0x0, 0x15, 0xff, 0xb1, 0x80, 0x24, 0xd5, 0x53,
+    0x14, 0xc8, 0x1, 0x43, 0xf5, 0x3c, 0x6c, 0x6c,
+    0x30, 0x20, 0x17, 0x84, 0xe8, 0x38, 0x6, 0x35,
+    0x36, 0x11, 0x0, 0x75, 0x49, 0x18, 0x7, 0xff,
+    0x40, 0x8c, 0x3, 0xf3, 0x8, 0x80, 0x3a, 0x63,
+    0x41, 0xc0, 0x31, 0xb1, 0x30, 0xc0, 0x80, 0x50,
+    0x12, 0x14, 0x3f, 0x32, 0xd4, 0x73, 0x4, 0xc5,
+    0x76, 0x19, 0x80,
+
+    /* U+44 "D" */
+    0x7f, 0xfb, 0xb1, 0x80, 0x3c, 0xae, 0xe1, 0x9d,
+    0x10, 0xd, 0xf1, 0x3b, 0x25, 0x80, 0x1f, 0x99,
+    0x84, 0xc0, 0x1f, 0xa0, 0x34, 0x3, 0xf0, 0x92,
+    0x0, 0x7f, 0x8, 0x7, 0xf9, 0xc0, 0x40, 0x3f,
+    0x38, 0x8, 0x7, 0xe1, 0x0, 0xfe, 0x12, 0x40,
+    0xf, 0xd0, 0x1a, 0x1, 0xf3, 0xb1, 0xb0, 0x5,
+    0xf1, 0x3b, 0x5, 0xa0, 0x19, 0x5d, 0xc3, 0x3a,
+    0x20, 0x0,
+
+    /* U+45 "E" */
+    0x3f, 0xff, 0xcc, 0x0, 0x26, 0x6f, 0x28, 0x1,
+    0x26, 0x7c, 0x60, 0x1f, 0xfd, 0xe6, 0xff, 0xe8,
+    0x0, 0x89, 0xdf, 0xb0, 0x2, 0x48, 0x8e, 0x40,
+    0xf, 0xfe, 0xaa, 0x44, 0x79, 0x0, 0x4, 0xef,
+    0xec,
+
+    /* U+46 "F" */
+    0x2f, 0xff, 0xd2, 0x0, 0x26, 0x6f, 0x60, 0x1,
+    0xe6, 0x7c, 0xa0, 0x1f, 0xfd, 0xe5, 0xff, 0xe9,
+    0x0, 0x89, 0xdf, 0xb0, 0x2, 0x78, 0x8e, 0x50,
+    0xf, 0xff, 0x38,
+
+    /* U+47 "G" */
+    0x0, 0x8a, 0xff, 0xd8, 0xa0, 0x19, 0x35, 0x10,
+    0xa5, 0x52, 0x1, 0x50, 0xed, 0xd7, 0x1b, 0x20,
+    0x38, 0xc1, 0x0, 0x5e, 0x1e, 0x18, 0xe, 0x1,
+    0x8e, 0x78, 0x14, 0x44, 0x1, 0xcc, 0xa0, 0x24,
+    0x1, 0xff, 0xc2, 0x68, 0x89, 0xc0, 0x3d, 0xae,
+    0xf4, 0x80, 0x90, 0x5, 0x7f, 0xe2, 0x0, 0x28,
+    0x88, 0x3, 0xf6, 0x84, 0x80, 0x7e, 0x62, 0x74,
+    0x0, 0x88, 0x80, 0x17, 0x8d, 0xda, 0x6f, 0x42,
+    0x80, 0x5, 0xec, 0xac, 0xc7, 0xd4,
+
+    /* U+48 "H" */
+    0x9f, 0x10, 0xc, 0x3f, 0x20, 0x1f, 0xff, 0x2e,
+    0xff, 0xdc, 0x1, 0x99, 0xdf, 0x30, 0x6, 0x88,
+    0xf0, 0x7, 0xff, 0xa0,
+
+    /* U+49 "I" */
+    0x4f, 0xff, 0xc8, 0xcd, 0x80, 0xc, 0xd8, 0xa6,
+    0x60, 0x19, 0x98, 0x80, 0x3f, 0xff, 0xe0, 0x1f,
+    0xfc, 0xd2, 0x99, 0x80, 0x66, 0x62, 0x66, 0xc0,
+    0x6, 0x6c,
+
+    /* U+4A "J" */
+    0x0, 0xfd, 0x3e, 0x60, 0x1f, 0xff, 0xf0, 0xf,
+    0xfe, 0x6b, 0xb0, 0x7, 0x18, 0x5, 0x52, 0x1,
+    0xce, 0x6, 0x14, 0x12, 0x1, 0x39, 0x28, 0x1,
+    0xcd, 0xb6, 0x72, 0xa, 0xc0, 0x2c, 0x80, 0x62,
+    0x6c, 0x10,
+
+    /* U+4B "K" */
+    0x4f, 0x80, 0xc, 0x9f, 0xa0, 0x1f, 0x15, 0x7,
+    0x80, 0x7d, 0xc3, 0x44, 0x1, 0xe9, 0x36, 0x50,
+    0xf, 0x2b, 0x14, 0x80, 0x78, 0xa8, 0x3c, 0x3,
+    0xc3, 0xc1, 0x4, 0x1, 0xe6, 0x30, 0xa0, 0xf,
+    0xc8, 0xa5, 0x0, 0x1e, 0x2a, 0xb1, 0x72, 0x0,
+    0xe5, 0x11, 0x40, 0x70, 0x7, 0xe6, 0x33, 0x30,
+    0x7, 0xee, 0x8, 0x10, 0xf, 0x89, 0xc6, 0xc0,
+    0x3f, 0x41, 0x2a, 0x0,
+
+    /* U+4C "L" */
+    0xf, 0xb0, 0xf, 0xff, 0xf8, 0x7, 0xff, 0xa9,
+    0x62, 0x3c, 0xc0, 0x1, 0x77, 0xf6, 0x0,
+
+    /* U+4D "M" */
+    0x8f, 0xd0, 0xd, 0x5f, 0x60, 0x2, 0x20, 0x4,
+    0xa0, 0x1c, 0xa0, 0x5, 0x0, 0xe2, 0xb0, 0x7,
+    0x88, 0x80, 0x24, 0x31, 0x5, 0x60, 0xd, 0xa0,
+    0xea, 0x16, 0x1, 0x98, 0xb7, 0xc4, 0xc4, 0x3,
+    0x2a, 0x2b, 0x80, 0x7a, 0xc0, 0x1a, 0x1, 0xc2,
+    0x62, 0x24, 0x0, 0xf9, 0x98, 0x1, 0xfa, 0x20,
+    0x1, 0xff, 0xd6,
+
+    /* U+4E "N" */
+    0x9f, 0x70, 0xc, 0x7f, 0x20, 0x9, 0x0, 0xfe,
+    0x17, 0x0, 0xfe, 0x90, 0xf, 0xca, 0x2e, 0x1,
+    0xf7, 0xc, 0x80, 0x7c, 0xf0, 0x2c, 0x1, 0xf3,
+    0xc, 0x0, 0x7e, 0x81, 0x60, 0xf, 0x98, 0x61,
+    0xc0, 0x3e, 0x91, 0xe0, 0xf, 0x9c, 0x54, 0x3,
+    0xf4, 0x80, 0x7f, 0x38, 0x80, 0x7f, 0x48, 0x0,
+
+    /* U+4F "O" */
+    0x0, 0x1d, 0xff, 0xac, 0x80, 0x24, 0xc4, 0x33,
+    0x26, 0x98, 0x2, 0x87, 0x73, 0x20, 0xd0, 0x61,
+    0x92, 0x0, 0x1c, 0xb, 0x60, 0x30, 0x6, 0x60,
+    0xc7, 0x11, 0x0, 0x61, 0x13, 0x91, 0x80, 0x78,
+    0xcc, 0x2, 0x1, 0xf0, 0x80, 0x80, 0x7c, 0x24,
+    0x60, 0x1e, 0x33, 0x38, 0x88, 0x3, 0x8, 0x9f,
+    0x1, 0x80, 0x33, 0x6, 0x30, 0xc1, 0x80, 0xa,
+    0x45, 0x82, 0x83, 0x2e, 0xda, 0x34, 0x0, 0x4d,
+    0x44, 0xd8, 0x80,
+
+    /* U+50 "P" */
+    0x2f, 0xfe, 0xe9, 0x10, 0xc, 0x4e, 0xf2, 0xb7,
+    0x90, 0x4, 0xf1, 0x15, 0xc8, 0xc8, 0x7, 0xe6,
+    0x24, 0x10, 0xf, 0xce, 0x6, 0x1, 0xf9, 0x80,
+    0xc0, 0x3e, 0x53, 0x41, 0x0, 0x3c, 0x45, 0x74,
+    0x32, 0x1, 0x13, 0xbc, 0xad, 0xe4, 0x1, 0x2f,
+    0xfd, 0xd2, 0x20, 0x1f, 0xfe, 0xd0,
+
+    /* U+51 "Q" */
+    0x0, 0x8e, 0xff, 0xd6, 0x60, 0x1c, 0x98, 0x86,
+    0x64, 0xc4, 0x0, 0x86, 0xc7, 0x73, 0x1a, 0x36,
+    0x20, 0x6, 0x8, 0x20, 0x1, 0x58, 0x30, 0x2,
+    0xc1, 0x80, 0x32, 0x85, 0x80, 0xc, 0x80, 0x3c,
+    0x46, 0x1, 0x30, 0x7, 0x98, 0x0, 0x20, 0x1f,
+    0xe1, 0x10, 0x7, 0xf8, 0x40, 0xc, 0x1, 0xe6,
+    0x0, 0x8c, 0x80, 0x3c, 0x46, 0x0, 0xb0, 0x50,
+    0xc, 0xa1, 0x60, 0x6, 0xb, 0x20, 0x1, 0x58,
+    0x30, 0x0, 0x6c, 0x76, 0xed, 0xa3, 0x42, 0x1,
+    0x26, 0x22, 0x42, 0x1a, 0x1, 0xc7, 0x7f, 0xf1,
+    0xbd, 0x0, 0x7e, 0x1c, 0x47, 0x10, 0xf, 0xeb,
+    0xd1,
+
+    /* U+52 "R" */
+    0x3f, 0xfe, 0xc6, 0x0, 0xe3, 0x77, 0x31, 0x4d,
+    0x0, 0x64, 0x88, 0x4f, 0x1a, 0xa8, 0x3, 0xf7,
+    0x87, 0x80, 0x7e, 0x20, 0x10, 0xf, 0xc4, 0x2,
+    0x1, 0xfb, 0xc3, 0x80, 0x24, 0x88, 0x4f, 0x1b,
+    0x20, 0x4, 0x6e, 0xe6, 0x19, 0x90, 0x6, 0x7f,
+    0xf5, 0x7, 0x0, 0x7e, 0x51, 0x71, 0x0, 0xfd,
+    0x0, 0xc0, 0x1f, 0x98, 0x64, 0x3, 0xfa, 0x45,
+    0xc0, 0x3f, 0x30, 0x48, 0x0,
+
+    /* U+53 "S" */
+    0x0, 0x1d, 0xf7, 0xe2, 0x80, 0x65, 0xc4, 0x55,
+    0x15, 0x58, 0x0, 0x68, 0x76, 0xeb, 0x91, 0xe,
+    0x8, 0xc, 0x40, 0x14, 0x85, 0x0, 0x42, 0x1,
+    0x8a, 0x6c, 0x10, 0x19, 0x40, 0x33, 0x30, 0x6,
+    0xc2, 0xb1, 0x84, 0x3, 0x93, 0x50, 0xe7, 0xa0,
+    0x3, 0x8a, 0xfa, 0x5, 0xf4, 0x3, 0xc2, 0xfc,
+    0xa5, 0x40, 0xac, 0x1, 0xd4, 0xa, 0x1d, 0x28,
+    0x1, 0xfb, 0xc2, 0x44, 0x2, 0x70, 0x40, 0x47,
+    0x2e, 0xa9, 0xc8, 0x19, 0x0, 0x45, 0xa2, 0x18,
+    0x63, 0xc8, 0x0,
+
+    /* U+54 "T" */
+    0x3f, 0xff, 0xf2, 0xb, 0x36, 0x0, 0x33, 0x71,
+    0x4c, 0xe2, 0x19, 0x9c, 0x40, 0x1f, 0xff, 0xf0,
+    0xf, 0xff, 0xc8,
+
+    /* U+55 "U" */
+    0xaf, 0x10, 0xc, 0x5f, 0x20, 0x1f, 0xfc, 0x73,
+    0x0, 0xff, 0xef, 0x18, 0x7, 0xff, 0x3c, 0xc0,
+    0x40, 0x30, 0x81, 0xf8, 0x20, 0x6, 0x40, 0xf7,
+    0x9, 0x20, 0x1, 0x48, 0x38, 0xd0, 0xed, 0x53,
+    0x46, 0x84, 0x17, 0x11, 0x54, 0x98, 0xa0,
+
+    /* U+56 "V" */
+    0x2f, 0xc0, 0xf, 0x6f, 0x89, 0x10, 0xc0, 0x38,
+    0x48, 0xc4, 0x10, 0x14, 0x3, 0x38, 0x58, 0x3,
+    0x43, 0x0, 0x36, 0x2, 0x0, 0x10, 0x1c, 0x3,
+    0x20, 0x98, 0x4, 0xa2, 0x40, 0x3, 0x17, 0x0,
+    0xde, 0x8, 0x0, 0xb0, 0xd0, 0xc, 0x81, 0xa0,
+    0x4, 0x4, 0x0, 0xc2, 0x68, 0x2, 0x68, 0x1,
+    0xeb, 0x4, 0x40, 0x68, 0x7, 0x94, 0x33, 0xc1,
+    0xc0, 0x3c, 0x44, 0x54, 0x31, 0x0, 0xf9, 0x8,
+    0x50, 0x3, 0xf6, 0x80, 0x2c, 0x3, 0xf2, 0x0,
+    0x98, 0x6,
+
+    /* U+57 "W" */
+    0x3f, 0x70, 0x5, 0xf8, 0x0, 0xfd, 0xc8, 0x38,
+    0x0, 0xa0, 0x40, 0xc0, 0x42, 0x6, 0x2, 0x20,
+    0x70, 0x30, 0x10, 0x16, 0x2, 0x0, 0x68, 0x70,
+    0x30, 0x11, 0x1, 0x40, 0xc8, 0x4, 0x8, 0x18,
+    0x43, 0xc9, 0x5c, 0x8, 0x40, 0x4, 0x2, 0x4f,
+    0xe4, 0xc, 0x40, 0xe, 0x3, 0x52, 0x20, 0x11,
+    0xb0, 0x0, 0x81, 0xc7, 0x54, 0x1c, 0x48, 0x0,
+    0xe1, 0x80, 0xc2, 0x2c, 0xf, 0x0, 0x10, 0x38,
+    0x18, 0x13, 0x81, 0x0, 0x4, 0x4, 0x80, 0xa,
+    0x20, 0xc0, 0x11, 0x3, 0x0, 0x38, 0x0, 0x40,
+    0x13, 0x1, 0x80, 0xc, 0x0, 0x20, 0x11, 0x7,
+    0x0, 0x14, 0x8, 0x0,
+
+    /* U+58 "X" */
+    0xc, 0xf5, 0x0, 0xc3, 0xfe, 0x10, 0xf0, 0x80,
+    0xd, 0x61, 0x2, 0x6, 0xa4, 0xc0, 0x2, 0x51,
+    0x70, 0xa, 0x2, 0x0, 0x12, 0x16, 0x1, 0x89,
+    0xc5, 0xcd, 0xd, 0x40, 0x3a, 0x46, 0x7c, 0x3c,
+    0x3, 0xc3, 0x2, 0x68, 0x60, 0x1f, 0x38, 0x3,
+    0x80, 0x3f, 0x48, 0x2, 0x40, 0x3e, 0x17, 0x26,
+    0x35, 0x0, 0xf5, 0x84, 0x40, 0x20, 0x3, 0x8d,
+    0x49, 0x45, 0xc9, 0x80, 0x37, 0x84, 0x80, 0x24,
+    0x20, 0x40, 0xa, 0x66, 0x40, 0x0, 0xb8, 0xc8,
+    0x2, 0x3, 0xc0, 0x34, 0xb, 0x90,
+
+    /* U+59 "Y" */
+    0x2f, 0xd0, 0xe, 0x1f, 0xe0, 0x24, 0x25, 0x0,
+    0xd2, 0x12, 0x0, 0x80, 0x90, 0xc, 0xc0, 0xc0,
+    0x3, 0x3c, 0x0, 0x61, 0x71, 0x0, 0xa0, 0x24,
+    0x1, 0x61, 0x20, 0x19, 0x9, 0x45, 0x49, 0x84,
+    0x3, 0xa0, 0x26, 0x41, 0x60, 0x1e, 0x52, 0x73,
+    0x52, 0x0, 0xfa, 0xc0, 0x12, 0x1, 0xf9, 0x80,
+    0xcc, 0x1, 0xff, 0xd6, 0x70, 0xf, 0xfe, 0x88,
+
+    /* U+5A "Z" */
+    0xcf, 0xff, 0xc9, 0x6c, 0xde, 0x0, 0x33, 0xcc,
+    0xf6, 0x2, 0x90, 0x7, 0xac, 0x2c, 0x3, 0xd0,
+    0x30, 0x20, 0x1c, 0x4e, 0x4e, 0x1, 0xe9, 0x9,
+    0x0, 0xf2, 0x21, 0x50, 0x3, 0xd2, 0x16, 0x1,
+    0xe7, 0x28, 0x10, 0xe, 0x18, 0x27, 0x0, 0xf5,
+    0x84, 0x0, 0x79, 0x15, 0x14, 0x3, 0xd0, 0x0,
+    0x88, 0xf2, 0x8, 0x23, 0xbf, 0xb0,
+
+    /* U+5B "[" */
+    0x68, 0x88, 0x2d, 0xde, 0x0, 0x17, 0xf8, 0x3,
+    0xff, 0xfe, 0x0, 0x28, 0x80, 0x4, 0xee, 0x0,
+
+    /* U+5C "\\" */
+    0x9f, 0x10, 0xe, 0xa0, 0x60, 0xe, 0x32, 0xa0,
+    0xf, 0x51, 0x18, 0x7, 0x30, 0x58, 0x7, 0xa,
+    0x30, 0x7, 0xb8, 0x50, 0x3, 0x94, 0x78, 0x3,
+    0xce, 0xa2, 0x1, 0xd4, 0xe, 0x1, 0xc6, 0x54,
+    0x1, 0xea, 0x32, 0x0, 0xe6, 0xa, 0x0, 0xe1,
+    0x46, 0x0, 0xf7, 0xa, 0x0, 0x72, 0x87, 0x0,
+
+    /* U+5D "]" */
+    0x8, 0x89, 0x81, 0xde, 0xb0, 0xff, 0x10, 0x7,
+    0xff, 0xfc, 0x1, 0x10, 0x20, 0x3, 0xb8, 0x0,
+
+    /* U+5E "^" */
+    0x0, 0xb7, 0x40, 0x1c, 0x64, 0x43, 0x0, 0xd4,
+    0x0, 0xa0, 0xc, 0xca, 0xa6, 0x0, 0x98, 0x3b,
+    0x80, 0xa0, 0xa, 0x14, 0x40, 0xc8, 0x11, 0xb0,
+    0x1, 0x8c, 0xa8, 0x28, 0x1, 0x41, 0x40,
+
+    /* U+5F "_" */
+    0x37, 0x7f, 0xc6, 0x91, 0x1f, 0x90,
+
+    /* U+60 "`" */
+    0x57, 0x30, 0x4a, 0xe0, 0x1f, 0x39,
+
+    /* U+61 "a" */
+    0x0, 0x26, 0x7f, 0x62, 0x80, 0x4d, 0x62, 0xee,
+    0x3a, 0x60, 0x19, 0x2d, 0x89, 0xd0, 0x90, 0x4,
+    0x48, 0x4, 0x48, 0x4, 0x2e, 0x80, 0x18, 0x40,
+    0x21, 0x9d, 0xff, 0x94, 0x2, 0xc6, 0x4a, 0xbc,
+    0x40, 0x3, 0x14, 0x4a, 0xa1, 0x88, 0x7, 0xe1,
+    0x70, 0x3, 0x8c, 0x4b, 0xcf, 0x90, 0x8, 0xb1,
+    0x5e, 0x16, 0x1c, 0x14,
+
+    /* U+62 "b" */
+    0x4f, 0x80, 0xf, 0xfe, 0xe3, 0xef, 0xeb, 0x0,
+    0x67, 0x87, 0x53, 0x97, 0x0, 0x87, 0x6a, 0x98,
+    0x30, 0x20, 0x6, 0x20, 0x1, 0x48, 0x38, 0x7,
+    0xc8, 0x1e, 0x1, 0xf0, 0x81, 0x80, 0x7c, 0x20,
+    0x60, 0x1f, 0x28, 0x78, 0x1, 0x40, 0x35, 0x83,
+    0x80, 0xb, 0x5d, 0xb0, 0xa0, 0x40, 0x10, 0xb3,
+    0x21, 0x97, 0x0,
+
+    /* U+63 "c" */
+    0x0, 0x1d, 0xf7, 0xea, 0x80, 0x49, 0x88, 0xec,
+    0x15, 0x20, 0xa, 0xc, 0x99, 0x6a, 0x31, 0xa8,
+    0xb9, 0x80, 0x5e, 0x4b, 0xa1, 0x80, 0x19, 0x35,
+    0x84, 0x1c, 0x3, 0xe1, 0x7, 0x0, 0xfb, 0x43,
+    0x0, 0x31, 0x42, 0x28, 0xb9, 0x0, 0x50, 0xee,
+    0xa, 0xd, 0x98, 0xd5, 0x73, 0x4, 0xc4, 0x77,
+    0xd, 0xc0, 0x0,
+
+    /* U+64 "d" */
+    0x0, 0xfa, 0x3d, 0x0, 0x3f, 0xfa, 0x8b, 0xbf,
+    0xce, 0x1, 0x9a, 0x89, 0x52, 0x1c, 0x0, 0x32,
+    0x3b, 0x54, 0xd1, 0x0, 0x38, 0x31, 0x0, 0x9,
+    0x80, 0x1e, 0x18, 0x1, 0xf1, 0x83, 0x80, 0x7c,
+    0x60, 0xe0, 0x1f, 0x78, 0x60, 0x7, 0xce, 0xc,
+    0x40, 0x1, 0x50, 0x0, 0xc8, 0xed, 0x53, 0xc8,
+    0x2, 0x6a, 0x25, 0x46, 0x80, 0x0,
+
+    /* U+65 "e" */
+    0x0, 0x15, 0x77, 0xe2, 0x80, 0x47, 0xaa, 0x8e,
+    0x55, 0x0, 0xd, 0x1d, 0xa8, 0xe3, 0x72, 0x61,
+    0x92, 0x0, 0xa4, 0x17, 0xc3, 0x26, 0x77, 0x87,
+    0x18, 0x23, 0x36, 0x50, 0x30, 0x6, 0x7f, 0xfa,
+    0xb4, 0x2c, 0x3, 0xe6, 0x7, 0x40, 0x8, 0xac,
+    0x86, 0xc2, 0xea, 0x2b, 0x54, 0xc1, 0x35, 0x51,
+    0xde, 0xf1,
+
+    /* U+66 "f" */
+    0x0, 0xe2, 0x68, 0x74, 0x0, 0xe7, 0xd9, 0x78,
+    0xb0, 0xc, 0x70, 0x57, 0xfe, 0xd0, 0xd, 0x61,
+    0x8, 0x0, 0x20, 0xc, 0x20, 0xc0, 0x1d, 0x1f,
+    0xe6, 0xc, 0xff, 0x90, 0x2e, 0x64, 0x60, 0xf3,
+    0x32, 0x81, 0xb3, 0x14, 0x2d, 0x9a, 0x10, 0xf,
+    0xff, 0xf8, 0x7, 0xff, 0x8,
+
+    /* U+67 "g" */
+    0x0, 0x36, 0xff, 0x43, 0xfa, 0x3, 0xc8, 0x44,
+    0xa4, 0x0, 0x6, 0x7, 0x1d, 0xd8, 0x60, 0x7,
+    0x9, 0x10, 0x9, 0x0, 0x1e, 0x6, 0x1, 0xfc,
+    0xe0, 0x1f, 0xce, 0x1, 0xf7, 0x86, 0x0, 0x7c,
+    0xe0, 0xc4, 0x0, 0x16, 0x0, 0xc, 0x8e, 0xd5,
+    0x3c, 0x40, 0x26, 0xa2, 0x57, 0x67, 0x0, 0xcb,
+    0xbf, 0xb0, 0x40, 0xc1, 0xa, 0x1, 0x12, 0x91,
+    0x0, 0xea, 0xe2, 0xb4, 0x24, 0x1, 0x72, 0xee,
+    0x54, 0xc4, 0x0,
+
+    /* U+68 "h" */
+    0x4f, 0x70, 0xf, 0xfe, 0xe1, 0xdf, 0xf4, 0x88,
+    0x5, 0x78, 0xc, 0x6d, 0xa0, 0x11, 0x6d, 0xce,
+    0x91, 0x98, 0x0, 0xc4, 0x1, 0x50, 0x28, 0x3,
+    0xc0, 0x30, 0x80, 0x7f, 0x18, 0x7, 0xff, 0xa0,
+
+    /* U+69 "i" */
+    0x0, 0xcd, 0xe8, 0x1, 0xf7, 0x1, 0x0, 0x7d,
+    0x1c, 0xc0, 0x1f, 0x84, 0x3, 0xbf, 0xf9, 0x80,
+    0x33, 0x34, 0x60, 0x1e, 0x99, 0xa8, 0x3, 0xff,
+    0xed, 0x33, 0x50, 0x54, 0xc9, 0xc1, 0x9a, 0x30,
+    0x36, 0x65, 0x0,
+
+    /* U+6A "j" */
+    0x0, 0xd3, 0xc4, 0x1, 0x8c, 0x44, 0x1, 0xab,
+    0x8c, 0x3, 0x84, 0x7, 0xff, 0x8c, 0x59, 0xa2,
+    0x0, 0xa6, 0x65, 0x0, 0xff, 0xf9, 0x10, 0x7,
+    0xa, 0x81, 0xc4, 0x27, 0xc2, 0x1, 0x5d, 0x8a,
+    0x9c, 0x0,
+
+    /* U+6B "k" */
+    0x4f, 0x80, 0xf, 0xff, 0x1a, 0xfe, 0x88, 0x7,
+    0x92, 0x8b, 0x4, 0x3, 0x92, 0xc7, 0xc4, 0x3,
+    0x8e, 0xc7, 0x8, 0x3, 0x8b, 0x42, 0xc8, 0x3,
+    0xca, 0x21, 0x20, 0x1f, 0xad, 0x4e, 0x40, 0x3c,
+    0xe9, 0x64, 0xca, 0x1, 0xf0, 0xf0, 0x51, 0x0,
+    0x7c, 0x72, 0x1e, 0x1, 0xf9, 0x94, 0xa8, 0x0,
+
+    /* U+6C "l" */
+    0xf, 0xfe, 0x60, 0xc, 0xcd, 0x18, 0x7, 0xa6,
+    0x6a, 0x0, 0xff, 0xff, 0x80, 0x7f, 0xf4, 0xe6,
+    0x6a, 0xa, 0x99, 0x38, 0x33, 0x46, 0x6, 0xcc,
+    0xa0,
+
+    /* U+6D "m" */
+    0x1f, 0x9b, 0xfd, 0x5b, 0xfd, 0x30, 0x9, 0xb1,
+    0xca, 0x8a, 0xb, 0x80, 0x25, 0x78, 0x11, 0x4b,
+    0xa9, 0x0, 0x46, 0x0, 0x33, 0x0, 0xc, 0x4,
+    0x3, 0xff, 0xfe, 0x1, 0xfc,
+
+    /* U+6E "n" */
+    0x4f, 0x54, 0xcf, 0xd9, 0x10, 0xb, 0xad, 0x98,
+    0xd, 0xa0, 0x12, 0xed, 0x4e, 0x99, 0x88, 0x0,
+    0xc4, 0x1, 0x58, 0x38, 0x3, 0xc0, 0x30, 0x81,
+    0x80, 0x7f, 0xfc, 0x0,
+
+    /* U+6F "o" */
+    0x0, 0x25, 0xff, 0xad, 0x0, 0x26, 0xb5, 0x66,
+    0x2d, 0xb0, 0x14, 0x97, 0xcc, 0xbc, 0xa4, 0xa8,
+    0x2c, 0x40, 0x3, 0x61, 0x46, 0xe, 0x1, 0x90,
+    0xd, 0xc0, 0x40, 0x31, 0x3, 0xb8, 0x4, 0x3,
+    0x8, 0x39, 0x82, 0x0, 0x64, 0x3, 0xa0, 0x81,
+    0x0, 0xc, 0x5, 0x14, 0x97, 0xcc, 0xbc, 0xa4,
+    0x81, 0xac, 0x99, 0x85, 0x6c, 0x0,
+
+    /* U+70 "p" */
+    0x4f, 0x67, 0xdf, 0xd6, 0x0, 0xd1, 0x2e, 0xa5,
+    0x2e, 0x1, 0x1f, 0xd5, 0x30, 0x20, 0x40, 0xa,
+    0x20, 0x3, 0x70, 0x70, 0x7, 0x80, 0x6c, 0xe,
+    0x0, 0xf9, 0xc0, 0x40, 0x3e, 0x70, 0x10, 0xf,
+    0xb0, 0x34, 0x1, 0x60, 0x11, 0x30, 0x20, 0x0,
+    0xf6, 0x65, 0xa3, 0x2, 0x0, 0x75, 0x76, 0x29,
+    0x70, 0xb, 0xe3, 0xbf, 0x58, 0x3, 0xff, 0xa8,
+
+    /* U+71 "q" */
+    0x0, 0x2e, 0xff, 0x4c, 0x7a, 0x3, 0xd0, 0x4c,
+    0x2b, 0x80, 0x6, 0x7, 0x19, 0x98, 0x80, 0x7,
+    0x9, 0x10, 0x8, 0xc0, 0x1e, 0x6, 0x1, 0xfc,
+    0xe0, 0x1f, 0xce, 0x1, 0xf7, 0x86, 0x0, 0x7c,
+    0xe0, 0xc4, 0x0, 0x15, 0x0, 0xc, 0xe, 0x4c,
+    0xbc, 0x80, 0x27, 0xa3, 0x67, 0x67, 0x0, 0xcb,
+    0xbf, 0xd0, 0x1, 0xff, 0xd5,
+
+    /* U+72 "r" */
+    0xcf, 0x6, 0xdf, 0xe5, 0x0, 0x4c, 0x88, 0x82,
+    0x20, 0x3, 0xdf, 0xef, 0xa0, 0x2, 0xd0, 0x3,
+    0xca, 0x1, 0xff, 0xe9,
+
+    /* U+73 "s" */
+    0x0, 0x1d, 0xf7, 0xeb, 0x80, 0x49, 0x8a, 0xec,
+    0x11, 0x60, 0x9, 0xf, 0x99, 0x6a, 0x24, 0x1,
+    0x8, 0x5, 0x34, 0xc1, 0x61, 0xce, 0x60, 0x4a,
+    0x40, 0xd6, 0xb1, 0x9f, 0x44, 0x1, 0x25, 0xfd,
+    0xb2, 0xe0, 0x93, 0xa0, 0x1, 0x26, 0x42, 0xc7,
+    0x12, 0x20, 0x10, 0x80, 0x8a, 0xb, 0xe6, 0x2e,
+    0x9, 0x81, 0xe9, 0x59, 0xd9, 0xf0, 0x0,
+
+    /* U+74 "t" */
+    0x0, 0x99, 0xc0, 0x3f, 0x5c, 0x0, 0x7f, 0xf0,
+    0xe7, 0xfc, 0x41, 0xff, 0x83, 0x66, 0x42, 0x13,
+    0x38, 0x11, 0x98, 0x60, 0xcd, 0x80, 0x3f, 0xfd,
+    0x4c, 0x8, 0x1, 0xf7, 0x5, 0xd4, 0xd9, 0x80,
+    0x4b, 0x44, 0xac, 0xe0,
+
+    /* U+75 "u" */
+    0x3f, 0x80, 0xd, 0x1e, 0x80, 0x1f, 0xfe, 0x81,
+    0x0, 0xf8, 0x40, 0x3f, 0x88, 0x1c, 0x3, 0x28,
+    0x4, 0xe3, 0x6c, 0xfa, 0x60, 0x14, 0x41, 0x66,
+    0xae, 0x0, 0x0,
+
+    /* U+76 "v" */
+    0xd, 0xf0, 0xe, 0x1f, 0xc0, 0xa0, 0x50, 0xc,
+    0xe1, 0x40, 0xc1, 0xc0, 0x1a, 0x81, 0x80, 0x55,
+    0x4, 0x0, 0x26, 0xc0, 0x17, 0x3, 0x0, 0x18,
+    0x28, 0x2, 0x42, 0xa0, 0x5, 0x11, 0x80, 0x6a,
+    0x22, 0xd4, 0x1, 0xcc, 0x15, 0x40, 0x60, 0xe,
+    0x14, 0x65, 0x50, 0x80, 0x7b, 0xc4, 0xb8, 0x3,
+    0xe4, 0x11, 0x20, 0x4,
+
+    /* U+77 "w" */
+    0x6f, 0x20, 0x5, 0x58, 0x5, 0xf0, 0xa0, 0xe0,
+    0x4, 0x40, 0x0, 0xc3, 0x4c, 0x34, 0x8, 0x40,
+    0xc1, 0x41, 0x0, 0x88, 0xe, 0x24, 0x81, 0xc2,
+    0x20, 0x47, 0xc, 0x57, 0xc0, 0x35, 0x0, 0x79,
+    0x2, 0x66, 0x14, 0x14, 0xc0, 0xa, 0x8, 0x48,
+    0x81, 0x31, 0xc0, 0x1, 0x87, 0x1, 0x90, 0xd0,
+    0x28, 0x4, 0x6a, 0x80, 0x4, 0x71, 0x10, 0x4,
+    0xa1, 0x80, 0xc, 0x15, 0x0, 0xde, 0x6, 0x0,
+    0x40, 0xc0, 0x0,
+
+    /* U+78 "x" */
+    0x7f, 0x90, 0xc, 0xff, 0x40, 0xe8, 0xca, 0x0,
+    0x38, 0x2a, 0x0, 0x50, 0xd8, 0x87, 0x7, 0x0,
+    0x43, 0x43, 0x52, 0x50, 0x60, 0x19, 0x1d, 0x19,
+    0x1c, 0x3, 0xd2, 0x0, 0xf0, 0xf, 0xac, 0x1,
+    0x20, 0x1e, 0x65, 0x54, 0x94, 0x80, 0x62, 0x91,
+    0xa6, 0x46, 0x40, 0xb, 0x83, 0x40, 0x14, 0x34,
+    0x21, 0x6, 0xe6, 0x0, 0x1b, 0x1a, 0x0,
+
+    /* U+79 "y" */
+    0x1f, 0xe0, 0xf, 0x77, 0x88, 0x94, 0x54, 0x3,
+    0x28, 0xa8, 0x84, 0x87, 0x0, 0x6e, 0x9, 0x0,
+    0x19, 0x90, 0x80, 0x2, 0x86, 0x60, 0xa, 0x42,
+    0xc0, 0xc, 0x12, 0x1, 0x94, 0x98, 0x1, 0x22,
+    0xa0, 0x1d, 0x60, 0xc8, 0x32, 0x1, 0xe6, 0x1b,
+    0xe0, 0x60, 0xf, 0x98, 0x95, 0x84, 0x3, 0xe9,
+    0x0, 0x58, 0x7, 0xe1, 0x12, 0x10, 0x7, 0xe7,
+    0x1f, 0x0, 0xfc, 0x50, 0x48, 0x1, 0xe3, 0xac,
+    0xe, 0x0, 0xf9, 0x54, 0x76, 0x60, 0x1e,
+
+    /* U+7A "z" */
+    0x5f, 0xff, 0xc6, 0xef, 0xe5, 0x0, 0x11, 0x22,
+    0x39, 0xc2, 0x84, 0x3, 0xa8, 0x9d, 0x40, 0x39,
+    0x94, 0xe0, 0x3, 0x8e, 0x47, 0x40, 0x38, 0x74,
+    0x34, 0x40, 0x3a, 0x86, 0x4c, 0x3, 0xa1, 0x15,
+    0x80, 0x39, 0x1c, 0x9, 0xdf, 0x90, 0x80, 0xf,
+    0x11, 0xda,
+
+    /* U+7B "{" */
+    0x0, 0xc9, 0x92, 0x1, 0x1d, 0xb5, 0x80, 0x50,
+    0x14, 0x40, 0x12, 0x20, 0x3, 0x8, 0x7, 0xe1,
+    0x0, 0xc6, 0x1, 0xe4, 0xd, 0x0, 0x13, 0x41,
+    0x30, 0x3, 0xe4, 0xf0, 0x40, 0x12, 0xc5, 0x40,
+    0x12, 0x4c, 0x22, 0x80, 0x64, 0xc, 0x0, 0xc4,
+    0x6, 0x1, 0xe1, 0x0, 0xc2, 0xe, 0x1, 0xc6,
+    0x60, 0xe, 0x80, 0x90, 0xc, 0x94, 0xd4, 0x1,
+    0x97, 0xec,
+
+    /* U+7C "|" */
+    0xbb, 0x0, 0x7f, 0xf6, 0x0,
+
+    /* U+7D "}" */
+    0xac, 0x30, 0xd, 0xf, 0x86, 0x1, 0x15, 0x4,
+    0x80, 0x61, 0x24, 0x0, 0xe1, 0x10, 0x7, 0xff,
+    0x1, 0xc0, 0x40, 0x31, 0x82, 0x80, 0x69, 0x1a,
+    0x52, 0x0, 0xe, 0x5, 0x48, 0x5, 0xc2, 0xfe,
+    0x0, 0x73, 0x98, 0x40, 0x6, 0x3, 0x80, 0x67,
+    0x1, 0x0, 0xff, 0x84, 0x40, 0x18, 0x49, 0x40,
+    0x35, 0x4, 0x0, 0x58, 0xb6, 0x60, 0x16, 0xf2,
+    0x0, 0x60,
+
+    /* U+7E "~" */
+    0x3, 0xdf, 0xd5, 0x0, 0xcc, 0x63, 0xa6, 0xa7,
+    0x52, 0x0, 0x29, 0x57, 0x1f, 0xae, 0x56, 0xea,
+    0xc1, 0x64, 0xa1, 0x0, 0x54, 0x9a, 0x96, 0x0
+};
+
+
+/*---------------------
+ *  GLYPH DESCRIPTION
+ *--------------------*/
+
+static const lv_font_fmt_txt_glyph_dsc_t glyph_dsc[] = {
+    {.bitmap_index = 0, .adv_w = 0, .box_w = 0, .box_h = 0, .ofs_x = 0, .ofs_y = 0} /* id = 0 reserved */,
+    {.bitmap_index = 0, .adv_w = 192, .box_w = 0, .box_h = 0, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 0, .adv_w = 192, .box_w = 3, .box_h = 15, .ofs_x = 4, .ofs_y = 0},
+    {.bitmap_index = 13, .adv_w = 192, .box_w = 6, .box_h = 5, .ofs_x = 3, .ofs_y = 10},
+    {.bitmap_index = 26, .adv_w = 192, .box_w = 12, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 110, .adv_w = 192, .box_w = 10, .box_h = 19, .ofs_x = 1, .ofs_y = -2},
+    {.bitmap_index = 193, .adv_w = 192, .box_w = 12, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 269, .adv_w = 192, .box_w = 11, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 346, .adv_w = 192, .box_w = 3, .box_h = 5, .ofs_x = 4, .ofs_y = 10},
+    {.bitmap_index = 353, .adv_w = 192, .box_w = 6, .box_h = 22, .ofs_x = 3, .ofs_y = -5},
+    {.bitmap_index = 413, .adv_w = 192, .box_w = 6, .box_h = 22, .ofs_x = 3, .ofs_y = -5},
+    {.bitmap_index = 472, .adv_w = 192, .box_w = 10, .box_h = 10, .ofs_x = 1, .ofs_y = 5},
+    {.bitmap_index = 518, .adv_w = 192, .box_w = 10, .box_h = 11, .ofs_x = 1, .ofs_y = 1},
+    {.bitmap_index = 543, .adv_w = 192, .box_w = 4, .box_h = 6, .ofs_x = 3, .ofs_y = -4},
+    {.bitmap_index = 555, .adv_w = 192, .box_w = 8, .box_h = 2, .ofs_x = 2, .ofs_y = 6},
+    {.bitmap_index = 561, .adv_w = 192, .box_w = 4, .box_h = 3, .ofs_x = 4, .ofs_y = 0},
+    {.bitmap_index = 567, .adv_w = 192, .box_w = 9, .box_h = 16, .ofs_x = 2, .ofs_y = -1},
+    {.bitmap_index = 617, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 689, .adv_w = 192, .box_w = 6, .box_h = 15, .ofs_x = 2, .ofs_y = 0},
+    {.bitmap_index = 708, .adv_w = 192, .box_w = 11, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 774, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 841, .adv_w = 192, .box_w = 11, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 893, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 957, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1027, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1078, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1150, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1220, .adv_w = 192, .box_w = 4, .box_h = 11, .ofs_x = 5, .ofs_y = 0},
+    {.bitmap_index = 1237, .adv_w = 192, .box_w = 5, .box_h = 15, .ofs_x = 4, .ofs_y = -4},
+    {.bitmap_index = 1265, .adv_w = 192, .box_w = 9, .box_h = 10, .ofs_x = 1, .ofs_y = 1},
+    {.bitmap_index = 1305, .adv_w = 192, .box_w = 10, .box_h = 6, .ofs_x = 1, .ofs_y = 4},
+    {.bitmap_index = 1322, .adv_w = 192, .box_w = 10, .box_h = 10, .ofs_x = 1, .ofs_y = 1},
+    {.bitmap_index = 1365, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1424, .adv_w = 192, .box_w = 12, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 1513, .adv_w = 192, .box_w = 12, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 1585, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1648, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1707, .adv_w = 192, .box_w = 11, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1765, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1798, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1825, .adv_w = 192, .box_w = 11, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 1895, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1915, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 1941, .adv_w = 192, .box_w = 11, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 1975, .adv_w = 192, .box_w = 11, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 2035, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 2050, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 2101, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 2149, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 2216, .adv_w = 192, .box_w = 11, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 2262, .adv_w = 192, .box_w = 12, .box_h = 18, .ofs_x = 0, .ofs_y = -3},
+    {.bitmap_index = 2351, .adv_w = 192, .box_w = 11, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 2412, .adv_w = 192, .box_w = 11, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 2487, .adv_w = 192, .box_w = 12, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 2506, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 2545, .adv_w = 192, .box_w = 12, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 2619, .adv_w = 192, .box_w = 12, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 2711, .adv_w = 192, .box_w = 12, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 2789, .adv_w = 192, .box_w = 12, .box_h = 15, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 2845, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 2899, .adv_w = 192, .box_w = 5, .box_h = 20, .ofs_x = 4, .ofs_y = -3},
+    {.bitmap_index = 2915, .adv_w = 192, .box_w = 8, .box_h = 16, .ofs_x = 2, .ofs_y = -1},
+    {.bitmap_index = 2963, .adv_w = 192, .box_w = 5, .box_h = 20, .ofs_x = 3, .ofs_y = -3},
+    {.bitmap_index = 2979, .adv_w = 192, .box_w = 8, .box_h = 8, .ofs_x = 2, .ofs_y = 7},
+    {.bitmap_index = 3010, .adv_w = 192, .box_w = 10, .box_h = 2, .ofs_x = 1, .ofs_y = -1},
+    {.bitmap_index = 3016, .adv_w = 192, .box_w = 4, .box_h = 3, .ofs_x = 4, .ofs_y = 12},
+    {.bitmap_index = 3022, .adv_w = 192, .box_w = 10, .box_h = 11, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3074, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3125, .adv_w = 192, .box_w = 10, .box_h = 11, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3176, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3230, .adv_w = 192, .box_w = 10, .box_h = 11, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3280, .adv_w = 192, .box_w = 11, .box_h = 16, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3325, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = -4},
+    {.bitmap_index = 3392, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3424, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3459, .adv_w = 192, .box_w = 7, .box_h = 19, .ofs_x = 2, .ofs_y = -4},
+    {.bitmap_index = 3493, .adv_w = 192, .box_w = 11, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3541, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3566, .adv_w = 192, .box_w = 12, .box_h = 11, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 3595, .adv_w = 192, .box_w = 10, .box_h = 11, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3623, .adv_w = 192, .box_w = 10, .box_h = 11, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3677, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = -4},
+    {.bitmap_index = 3733, .adv_w = 192, .box_w = 10, .box_h = 15, .ofs_x = 1, .ofs_y = -4},
+    {.bitmap_index = 3786, .adv_w = 192, .box_w = 8, .box_h = 11, .ofs_x = 3, .ofs_y = 0},
+    {.bitmap_index = 3806, .adv_w = 192, .box_w = 10, .box_h = 11, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3861, .adv_w = 192, .box_w = 10, .box_h = 14, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3897, .adv_w = 192, .box_w = 10, .box_h = 11, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 3924, .adv_w = 192, .box_w = 11, .box_h = 11, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 3976, .adv_w = 192, .box_w = 12, .box_h = 11, .ofs_x = 0, .ofs_y = 0},
+    {.bitmap_index = 4043, .adv_w = 192, .box_w = 11, .box_h = 11, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 4098, .adv_w = 192, .box_w = 12, .box_h = 15, .ofs_x = 0, .ofs_y = -4},
+    {.bitmap_index = 4169, .adv_w = 192, .box_w = 10, .box_h = 11, .ofs_x = 1, .ofs_y = 0},
+    {.bitmap_index = 4211, .adv_w = 192, .box_w = 7, .box_h = 20, .ofs_x = 3, .ofs_y = -4},
+    {.bitmap_index = 4269, .adv_w = 192, .box_w = 2, .box_h = 19, .ofs_x = 5, .ofs_y = -4},
+    {.bitmap_index = 4274, .adv_w = 192, .box_w = 7, .box_h = 20, .ofs_x = 3, .ofs_y = -4},
+    {.bitmap_index = 4332, .adv_w = 192, .box_w = 12, .box_h = 4, .ofs_x = 0, .ofs_y = 4}
+};
+
+/*---------------------
+ *  CHARACTER MAPPING
+ *--------------------*/
+
+
+
+/*Collect the unicode lists and glyph_id offsets*/
+static const lv_font_fmt_txt_cmap_t cmaps[] =
+{
+    {
+        .range_start = 32, .range_length = 95, .glyph_id_start = 1,
+        .unicode_list = NULL, .glyph_id_ofs_list = NULL, .list_length = 0, .type = LV_FONT_FMT_TXT_CMAP_FORMAT0_TINY
+    }
+};
+
+
+
+/*--------------------
+ *  ALL CUSTOM DATA
+ *--------------------*/
+
+/*Store all the custom data of the font*/
+static lv_font_fmt_txt_dsc_t font_dsc = {
+    .glyph_bitmap = gylph_bitmap,
+    .glyph_dsc = glyph_dsc,
+    .cmaps = cmaps,
+    .kern_dsc = NULL,
+    .kern_scale = 0,
+    .cmap_num = 1,
+    .bpp = 4,
+    .kern_classes = 0,
+    .bitmap_format = 1
+};
+
+
+/*-----------------
+ *  PUBLIC FONT
+ *----------------*/
+
+/*Initialize a public general font descriptor*/
+lv_font_t font_3 = {
+    .get_glyph_dsc = lv_font_get_glyph_dsc_fmt_txt,    /*Function pointer to get glyph's data*/
+    .get_glyph_bitmap = lv_font_get_bitmap_fmt_txt,    /*Function pointer to get glyph's bitmap*/
+    .line_height = 22,          /*The maximum line height required by the font*/
+    .base_line = 5,             /*Baseline measured from the bottom of the line*/
+#if !(LVGL_VERSION_MAJOR == 6 && LVGL_VERSION_MINOR == 0)
+    .subpx = LV_FONT_SUBPX_NONE,
+#endif
+    .dsc = &font_dsc           /*The custom font data. Will be accessed by `get_glyph_bitmap/dsc` */
+};
+
+#endif /*#if FONT_3*/
+

tests/lv_test_main.c

@@ -23,6 +23,63 @@ int main(void)
 }
 
 
+#if LV_USE_FILESYSTEM
+static lv_fs_res_t open_cb(struct _lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode)
+{
+    (void) drv;
+    (void) mode;
+
+    FILE * fp = fopen(path, "rb"); // only reading is supported
+
+    *((FILE **)file_p) = fp;
+    return NULL == fp ? LV_FS_RES_UNKNOWN : LV_FS_RES_OK;
+}
+
+static lv_fs_res_t close_cb(struct _lv_fs_drv_t * drv, void * file_p)
+{
+    (void) drv;
+
+    FILE * fp = *((FILE **) file_p);
+    fclose(fp);
+    return LV_FS_RES_OK;
+}
+
+static lv_fs_res_t read_cb(struct _lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
+{
+    (void) drv;
+
+    FILE * fp = *((FILE **) file_p);
+    *br = fread(buf, 1, btr, fp);
+    return (*br <= 0) ? LV_FS_RES_UNKNOWN : LV_FS_RES_OK;
+}
+
+static lv_fs_res_t seek_cb(struct _lv_fs_drv_t * drv, void * file_p, uint32_t pos)
+{
+    (void) drv;
+
+    FILE * fp = *((FILE **) file_p);
+    fseek (fp, pos, SEEK_SET);
+
+    return LV_FS_RES_OK;
+}
+
+static lv_fs_res_t tell_cb(struct _lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
+{
+    (void) drv;
+
+    FILE * fp = *((FILE **) file_p);
+    *pos_p = ftell(fp);
+
+    return LV_FS_RES_OK;
+}
+
+static bool ready_cb(struct _lv_fs_drv_t * drv)
+{
+    (void) drv;
+    return true;
+}
+#endif
+
 static void hal_init(void)
 {
     static lv_disp_buf_t disp_buf;
@@ -35,8 +92,23 @@ static void hal_init(void)
     disp_drv.buffer = &disp_buf;
     disp_drv.flush_cb = dummy_flush_cb;
     lv_disp_drv_register(&disp_drv);
-}
 
+#if LV_USE_FILESYSTEM
+    lv_fs_drv_t drv;
+    lv_fs_drv_init(&drv);                     /*Basic initialization*/
+
+    drv.letter = 'f';                         /*An uppercase letter to identify the drive */
+    drv.file_size = sizeof(FILE *);   /*Size required to store a file object*/
+    drv.ready_cb = ready_cb;               /*Callback to tell if the drive is ready to use */
+    drv.open_cb = open_cb;                 /*Callback to open a file */
+    drv.close_cb = close_cb;               /*Callback to close a file */
+    drv.read_cb = read_cb;                 /*Callback to read a file */
+    drv.seek_cb = seek_cb;                 /*Callback to seek in a file (Move cursor) */
+    drv.tell_cb = tell_cb;                 /*Callback to tell the cursor position  */
+
+    lv_fs_drv_register(&drv);                 /*Finally register the drive*/
+#endif
+}
 
 static void dummy_flush_cb(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
 {