Merge branch 'dev-5.3' into mixed

.editorconfig

@@ -0,0 +1,7 @@
+[*.{c,h}]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+

README.md

@@ -29,7 +29,7 @@ In the simplest case you need 5 things:
 3. Register a function which can **read an input device**. (E.g. touch pad)
 4. Copy `lv_conf_templ.h` as `lv_conf.h` and set at least `LV_HOR_RES`, `LV_VER_RES` and `LV_COLOR_DEPTH`. 
 5. Call `lv_task_handler()` periodically every few milliseconds.
-For a detailed description visit https://github.com/littlevgl/lvgl/wiki/Porting
+For a detailed description visit https://docs.littlevgl.com/#Porting
 Or check the [Porting tutorial](https://github.com/littlevgl/lv_examples/blob/master/lv_tutorial/0_porting/lv_tutorial_porting.c)
  
 ## Project set-up

lv_conf_templ.h

@@ -371,7 +371,7 @@
 /*************************
  * Non-user section
  *************************/
-#ifdef _MSC_VER                               /* Disable warnings for Visual Studio*/
+#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)    /* Disable warnings for Visual Studio*/
 #define _CRT_SECURE_NO_WARNINGS
 #endif
 

lv_misc/lv_anim.c

@@ -157,7 +157,6 @@ uint16_t lv_anim_speed_to_time(uint16_t speed, int32_t start, int32_t end)
 int32_t lv_anim_path_linear(const lv_anim_t * a)
 {
     /*Calculate the current step*/
-
     uint16_t step;
     if(a->time == a->act_time) step = LV_ANIM_RESOLUTION; /*Use the last value if the time fully elapsed*/
     else step = (a->act_time * LV_ANIM_RESOLUTION) / a->time;
@@ -172,6 +171,53 @@ int32_t lv_anim_path_linear(const lv_anim_t * a)
     return new_value;
 }
 
+/**
+ * Calculate the current value of an animation slowing down the start phase
+ * @param a pointer to an animation
+ * @return the current value to set
+ */
+int32_t lv_anim_path_ease_in(const lv_anim_t * a)
+{
+    /*Calculate the current step*/
+    uint32_t t;
+    if(a->time == a->act_time) t = 1024;
+    else t = (uint32_t)((uint32_t)a->act_time * 1024) / a->time;
+
+    int32_t step = lv_bezier3(t, 0, 1, 1, 1024);
+
+    int32_t new_value;
+    new_value = (int32_t) step * (a->end - a->start);
+    new_value = new_value >> 10;
+    new_value += a->start;
+
+
+    return new_value;
+}
+
+/**
+ * Calculate the current value of an animation slowing down the end phase
+ * @param a pointer to an animation
+ * @return the current value to set
+ */
+int32_t lv_anim_path_ease_out(const lv_anim_t * a)
+{
+    /*Calculate the current step*/
+
+    uint32_t t;
+    if(a->time == a->act_time) t = 1024;
+    else t = (uint32_t)((uint32_t)a->act_time * 1024) / a->time;
+
+    int32_t step = lv_bezier3(t, 0, 1023, 1023, 1024);
+
+    int32_t new_value;
+    new_value = (int32_t) step * (a->end - a->start);
+    new_value = new_value >> 10;
+    new_value += a->start;
+
+
+    return new_value;
+}
+
 /**
  * Calculate the current value of an animation applying an "S" characteristic (cosine)
  * @param a pointer to an animation

lv_misc/lv_anim.h

@@ -121,6 +121,19 @@ uint16_t lv_anim_speed_to_time(uint16_t speed, int32_t start, int32_t end);
  */
 int32_t lv_anim_path_linear(const lv_anim_t *a);
 
+/**
+ * Calculate the current value of an animation slowing down the start phase
+ * @param a pointer to an animation
+ * @return the current value to set
+ */
+int32_t lv_anim_path_ease_in(const lv_anim_t * a);
+
+/**
+ * Calculate the current value of an animation slowing down the end phase
+ * @param a pointer to an animation
+ * @return the current value to set
+ */
+int32_t lv_anim_path_ease_out(const lv_anim_t * a);
 
 /**
  * Calculate the current value of an animation applying an "S" characteristic (cosine)

lv_objx/lv_canvas.c

@@ -123,11 +123,11 @@ void lv_canvas_set_px(lv_obj_t * canvas, lv_coord_t x, lv_coord_t y, lv_color_t
  * @param x left side of the destination position
  * @param y top side of the destination position
  */
-void lv_canvas_copy_to_buf(lv_obj_t * canvas, void * to_copy, lv_coord_t w, lv_coord_t h, lv_coord_t x, lv_coord_t y)
+void lv_canvas_copy_buf(lv_obj_t * canvas, void * to_copy, lv_coord_t w, lv_coord_t h, lv_coord_t x, lv_coord_t y)
 {
     lv_canvas_ext_t * ext = lv_obj_get_ext_attr(canvas);
     if(x + w >= ext->dsc.header.w || y + h >= ext->dsc.header.h) {
-          LV_LOG_WARN("lv_canvas_copy_to_buf: x or y out of the canvas");
+        LV_LOG_WARN("lv_canvas_copy_buf: x or y out of the canvas");
         return;
     }
 
@@ -140,9 +140,49 @@ void lv_canvas_copy_to_buf(lv_obj_t * canvas, void * to_copy, lv_coord_t w, lv_c
         px += ext->dsc.header.w * px_size;
         to_copy8 += w * px_size;
     }
-
 }
 
+/**
+ * Multiply a buffer with the canvas
+ * @param canvas pointer to a canvas object
+ * @param to_copy buffer to copy (multiply). LV_IMG_CF_TRUE_COLOR_ALPHA is not supported
+ * @param w width of the buffer to copy
+ * @param h height of the buffer to copy
+ * @param x left side of the destination position
+ * @param y top side of the destination position
+ */
+void lv_canvas_mult_buf(lv_obj_t * canvas, void * to_copy, lv_coord_t w, lv_coord_t h, lv_coord_t x, lv_coord_t y)
+{
+    lv_canvas_ext_t * ext = lv_obj_get_ext_attr(canvas);
+    if(x + w >= ext->dsc.header.w || y + h >= ext->dsc.header.h) {
+        LV_LOG_WARN("lv_canvas_mult_buf: x or y out of the canvas");
+        return;
+    }
+
+    if(ext->dsc.header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
+        LV_LOG_WARN("lv_canvas_mult_buf: LV_IMG_CF_TRUE_COLOR_ALPHA is not supported");
+        return;
+    }
+
+    uint32_t px_size = lv_img_color_format_get_px_size(ext->dsc.header.cf) >> 3;
+    uint32_t px = ext->dsc.header.w * y * px_size + x * px_size;
+    lv_color_t * copy_buf_color = (lv_color_t *) to_copy;
+    lv_color_t * canvas_buf_color = (lv_color_t *) &ext->dsc.data[px];
+
+    lv_coord_t i;
+    lv_coord_t j;
+    for(i = 0; i < h; i++) {
+        for(j = 0; j < w; j++) {
+            canvas_buf_color[j].red = (uint16_t) ((uint16_t) canvas_buf_color[j].red * copy_buf_color[j].red) >> 8;
+            canvas_buf_color[j].green = (uint16_t) ((uint16_t) canvas_buf_color[j].green * copy_buf_color[j].green) >> 8;
+            canvas_buf_color[j].blue = (uint16_t) ((uint16_t) canvas_buf_color[j].blue * copy_buf_color[j].blue) >> 8;
+        }
+        copy_buf_color += w;
+        canvas_buf_color += ext->dsc.header.w;
+    }
+}
+
+
 /*=====================
  * Setter functions
  *====================*/
@@ -239,7 +279,6 @@ static lv_res_t lv_canvas_signal(lv_obj_t * canvas, lv_signal_t sign, void * par
     res = ancestor_signal(canvas, sign, param);
     if(res != LV_RES_OK) return res;
 
-
     if(sign == LV_SIGNAL_CLEANUP) {
         /*Nothing to cleanup. (No dynamically allocated memory in 'ext')*/
     } else if(sign == LV_SIGNAL_GET_TYPE) {

lv_objx/lv_canvas.h

@@ -80,7 +80,18 @@ void lv_canvas_set_px(lv_obj_t * canvas, lv_coord_t x, lv_coord_t y, lv_color_t
  * @param x left side of the destination position
  * @param y top side of the destination position
  */
-void lv_canvas_copy_to_buf(lv_obj_t * canvas, void * to_copy, lv_coord_t w, lv_coord_t h, lv_coord_t x, lv_coord_t y);
+void lv_canvas_copy_buf(lv_obj_t * canvas, void * to_copy, lv_coord_t w, lv_coord_t h, lv_coord_t x, lv_coord_t y);
+
+/**
+ * Multiply a buffer with the canvas
+ * @param canvas pointer to a canvas object
+ * @param to_copy buffer to copy (multiply). LV_IMG_CF_TRUE_COLOR_ALPHA is not supported
+ * @param w width of the buffer to copy
+ * @param h height of the buffer to copy
+ * @param x left side of the destination position
+ * @param y top side of the destination position
+ */
+void lv_canvas_mult_buf(lv_obj_t * canvas, void * to_copy, lv_coord_t w, lv_coord_t h, lv_coord_t x, lv_coord_t y);
 
 /*=====================
  * Setter functions