fix(refresh): do not redraw the whole object if only part's style changes on a new state

examples/porting/lv_port_disp_template.c

@@ -76,27 +76,27 @@ void lv_port_disp_init(void)
      */
 
     /* Example for 1) */
-    static lv_draw_buf_t draw_buf_dsc_1;
+    static lv_disp_draw_buf_t draw_buf_dsc_1;
     static lv_color_t buf_1[MY_DISP_HOR_RES * 10];                          /*A buffer for 10 rows*/
-    lv_draw_buf_init(&draw_buf_dsc_1, buf_1, NULL, MY_DISP_HOR_RES * 10);   /*Initialize the display buffer*/
+    lv_disp_draw_buf_init(&draw_buf_dsc_1, buf_1, NULL, MY_DISP_HOR_RES * 10);   /*Initialize the display buffer*/
 
     /* Example for 2) */
-    static lv_draw_buf_t draw_buf_dsc_2;
+    static lv_disp_draw_buf_t draw_buf_dsc_2;
     static lv_color_t buf_2_1[MY_DISP_HOR_RES * 10];                        /*A buffer for 10 rows*/
     static lv_color_t buf_2_1[MY_DISP_HOR_RES * 10];                        /*An other buffer for 10 rows*/
-    lv_draw_buf_init(&draw_buf_dsc_2, buf_2_1, buf_2_1, MY_DISP_HOR_RES * 10);   /*Initialize the display buffer*/
+    lv_disp_draw_buf_init(&draw_buf_dsc_2, buf_2_1, buf_2_1, MY_DISP_HOR_RES * 10);   /*Initialize the display buffer*/
 
     /* Example for 3) */
-    static lv_draw_buf_t draw_buf_dsc_3;
+    static lv_disp_draw_buf_t draw_buf_dsc_3;
     static lv_color_t buf_3_1[MY_DISP_HOR_RES * MY_DISP_VER_RES];            /*A screen sized buffer*/
     static lv_color_t buf_3_1[MY_DISP_HOR_RES * MY_DISP_VER_RES];            /*An other screen sized buffer*/
-    lv_draw_buf_init(&draw_buf_dsc_3, buf_3_1, buf_3_2, MY_DISP_VER_RES * LV_VER_RES_MAX);   /*Initialize the display buffer*/
+    lv_disp_draw_buf_init(&draw_buf_dsc_3, buf_3_1, buf_3_2, MY_DISP_VER_RES * LV_VER_RES_MAX);   /*Initialize the display buffer*/
 
     /*-----------------------------------
      * Register the display in LVGL
      *----------------------------------*/
 
-    lv_disp_drv_t disp_drv;                         /*Descriptor of a display driver*/
+    static lv_disp_drv_t disp_drv;                         /*Descriptor of a display driver*/
     lv_disp_drv_init(&disp_drv);                    /*Basic initialization*/
 
     /*Set up the functions to access to your display*/

examples/porting/lv_port_fs_template.c

@@ -84,7 +84,7 @@ void lv_port_fs_init(void)
      *--------------------------------------------------*/
 
     /*Add a simple drive to open images*/
-    lv_fs_drv_t fs_drv;
+    static lv_fs_drv_t fs_drv;
     lv_fs_drv_init(&fs_drv);
 
     /*Set up fields...*/

examples/porting/lv_port_indev_template.c

@@ -80,7 +80,7 @@ void lv_port_indev_init(void)
      *  You should shape them according to your hardware
      */
 
-    lv_indev_drv_t indev_drv;
+    static lv_indev_drv_t indev_drv;
 
     /*------------------
      * Touchpad

examples/widgets/textarea/lv_example_textarea_1.c

@@ -18,10 +18,13 @@ static void btnm_event_handler(lv_obj_t * obj, lv_event_t event)
 void lv_example_textarea_1(void)
 {
     lv_obj_t * ta = lv_textarea_create(lv_scr_act(), NULL);
-//    lv_textarea_set_one_line(ta, true);
+    lv_textarea_set_text(ta, "asd");
     lv_obj_align(ta, NULL, LV_ALIGN_IN_TOP_MID, 0, 10);
     lv_obj_add_state(ta, LV_STATE_FOCUSED); /*To be sure the cursor is visible*/
 
+//    lv_obj_set_style_text_align(ta, LV_PART_MAIN, LV_STATE_DEFAULT, LV_TEXT_ALIGN_CENTER);
+    lv_obj_set_style_text_align(lv_textarea_get_label(ta), LV_PART_MAIN, LV_STATE_DEFAULT, LV_TEXT_ALIGN_CENTER);
+
     static const char * btnm_map[] = {"1", "2", "3", "\n",
                                "4", "5", "6", "\n",
                                "7", "8", "9", "\n",

src/core/lv_obj_style.h

@@ -4,7 +4,7 @@
  */
 
 #ifndef LV_OBJ_STYLE_H
-#define LV_OB_STYLE_H
+#define LV_OBJ_STYLE_H
 
 #ifdef __cplusplus
 extern "C" {

src/draw/lv_draw_label.c

@@ -671,7 +671,7 @@ static void draw_letter_subpx(lv_coord_t pos_x, lv_coord_t pos_y, lv_font_glyph_
     lv_color_t * color_buf = lv_mem_buf_get(mask_buf_size * sizeof(lv_color_t));
 
     lv_disp_t * disp = _lv_refr_get_disp_refreshing();
-    lv_draw_buf_t * draw_buf = lv_disp_get_draw_buf(disp);
+    lv_disp_draw_buf_t * draw_buf = lv_disp_get_draw_buf(disp);
 
     int32_t disp_buf_width = lv_area_get_width(&draw_buf->area);
     lv_color_t * disp_buf_buf_tmp = draw_buf->buf_act;

src/font/lv_font_fmt_txt.c

@@ -92,6 +92,9 @@ const uint8_t * lv_font_get_bitmap_fmt_txt(const lv_font_t * font, uint32_t unic
     /*Handle compressed bitmap*/
     else {
 #if LV_USE_FONT_COMPRESSED
+        static size_t last_buf_size = 0;
+        if(LV_GC_ROOT(_lv_font_decompr_buf) == NULL) last_buf_size = 0;
+
         uint32_t gsize = gdsc->box_w * gdsc->box_h;
         if(gsize == 0) return NULL;
 
@@ -112,11 +115,12 @@ const uint8_t * lv_font_get_bitmap_fmt_txt(const lv_font_t * font, uint32_t unic
                 break;
         }
 
-        if(lv_mem_get_size(LV_GC_ROOT(_lv_font_decompr_buf)) < buf_size) {
+        if(last_buf_size < buf_size) {
             uint8_t * tmp = lv_mem_realloc(LV_GC_ROOT(_lv_font_decompr_buf), buf_size);
             LV_ASSERT_MALLOC(tmp);
             if(tmp == NULL) return NULL;
             LV_GC_ROOT(_lv_font_decompr_buf) = tmp;
+            last_buf_size = buf_size;
         }
 
         bool prefilter = fdsc->bitmap_format == LV_FONT_FMT_TXT_COMPRESSED ? true : false;

src/hal/lv_hal_disp.c

@@ -66,7 +66,7 @@ void lv_disp_drv_init(lv_disp_drv_t * driver)
 
 /**
  * Initialize a display buffer
- * @param draw_buf pointer `lv_draw_buf_t` variable to initialize
+ * @param draw_buf pointer `lv_disp_draw_buf_t` variable to initialize
  * @param buf1 A buffer to be used by LVGL to draw the image.
  *             Always has to specified and can't be NULL.
  *             Can be an array allocated by the user. E.g. `static lv_color_t disp_buf1[1024 * 10]`

src/hal/lv_hal_disp.h

@@ -194,7 +194,7 @@ void lv_disp_drv_init(lv_disp_drv_t * driver);
 
 /**
  * Initialize a display buffer
- * @param draw_buf pointer `lv_draw_buf_t` variable to initialize
+ * @param draw_buf pointer `lv_disp_draw_buf_t` variable to initialize
  * @param buf1 A buffer to be used by LVGL to draw the image.
  *             Always has to specified and can't be NULL.
  *             Can be an array allocated by the user. E.g. `static lv_color_t disp_buf1[1024 * 10]`

src/misc/lv_style.h

@@ -203,7 +203,7 @@ typedef enum {
     LV_STYLE_TEXT_LETTER_SPACE       = 90 | LV_STYLE_PROP_INHERIT | LV_STYLE_PROP_LAYOUT_REFR,
     LV_STYLE_TEXT_LINE_SPACE         = 91 | LV_STYLE_PROP_INHERIT | LV_STYLE_PROP_LAYOUT_REFR,
     LV_STYLE_TEXT_DECOR              = 92 | LV_STYLE_PROP_INHERIT,
-    LV_STYLE_TEXT_ALIGN              = 93 | LV_STYLE_PROP_INHERIT,
+    LV_STYLE_TEXT_ALIGN              = 93 | LV_STYLE_PROP_INHERIT | LV_STYLE_PROP_LAYOUT_REFR,
 
     /*Group 6*/
     LV_STYLE_CONTENT_TEXT            = 96  | LV_STYLE_PROP_EXT_DRAW,

tests/build.py

@@ -127,6 +127,7 @@ minimal_16bit_swap = {
   
   "LV_FONT_UNSCII_8":1,
   
+  "LV_USE_FONT_SUBPX": 1,
   "LV_USE_BIDI": 0,
   "LV_USE_ARABIC_PERSIAN_CHARS":0,
   
@@ -147,6 +148,7 @@ full_32bit = {
   
   "LV_USE_LOG":1,
   "LV_LOG_PRINTF":1,
+  "LV_USE_FONT_SUBPX": 1,
   "LV_FONT_SUBPX_BGR":1,
   "LV_USE_PERF_MONITOR":1,
   
@@ -188,7 +190,7 @@ full_32bit = {
   "LV_FONT_UNSCII_8":1,
   "LV_FONT_UNSCII_16":1,
   "LV_FONT_FMT_TXT_LARGE":1,
-  "LV_FONT_FMT_TXT_LARGE":1,
+  "LV_USE_FONT_COMPRESSED":1,
 
   "LV_USE_BIDI": 1,
   "LV_USE_ARABIC_PERSIAN_CHARS":1,