feat(style) add user_data paramter to lv_style_transition_dsc_init

examples/widgets/btn/lv_example_btn_2.c

@@ -47,7 +47,7 @@ void lv_example_btn_2(void)
     /*Add a transition to the the outline*/
     static lv_style_transition_dsc_t trans;
     static lv_style_prop_t props[] = {LV_STYLE_OUTLINE_WIDTH, LV_STYLE_OUTLINE_OPA, 0};
-    lv_style_transition_dsc_init(&trans, props, lv_anim_path_linear, 300, 0);
+    lv_style_transition_dsc_init(&trans, props, lv_anim_path_linear, 300, 0, NULL);
 
     lv_style_set_transition(&style_pr, &trans);
 

examples/widgets/btn/lv_example_btn_3.c

@@ -14,12 +14,12 @@ void lv_example_btn_3(void)
     /*Transition descriptor when going back to the default state.
      *Add some delay to be sure the press transition is visible even if the press was very short*/
     static lv_style_transition_dsc_t transition_dsc_def;
-    lv_style_transition_dsc_init(&transition_dsc_def, props, lv_anim_path_overshoot, 250, 100);
+    lv_style_transition_dsc_init(&transition_dsc_def, props, lv_anim_path_overshoot, 250, 100, NULL);
 
     /*Transition descriptor when going to pressed state.
      *No delay, go to presses state immediately*/
     static lv_style_transition_dsc_t transition_dsc_pr;
-    lv_style_transition_dsc_init(&transition_dsc_pr, props, lv_anim_path_ease_in_out, 250, 0);
+    lv_style_transition_dsc_init(&transition_dsc_pr, props, lv_anim_path_ease_in_out, 250, 0, NULL);
 
     /*Add only the new transition to he default state*/
     static lv_style_t style_def;

examples/widgets/imgbtn/lv_example_imgbtn_1.c

@@ -10,7 +10,7 @@ void lv_example_imgbtn_1(void)
     /*Create a transition animation on width transformation and recolor.*/
     static lv_style_prop_t tr_prop[] = {LV_STYLE_TRANSFORM_WIDTH, LV_STYLE_IMG_RECOLOR_OPA, 0};
     static lv_style_transition_dsc_t tr;
-    lv_style_transition_dsc_init(&tr, tr_prop, lv_anim_path_linear, 200, 0);
+    lv_style_transition_dsc_init(&tr, tr_prop, lv_anim_path_linear, 200, 0, NULL);
 
     static lv_style_t style_def;
     lv_style_init(&style_def);

examples/widgets/slider/lv_example_slider_2.c

@@ -11,7 +11,7 @@ void lv_example_slider_2(void)
     /*Create a transition*/
     static const lv_style_prop_t props[] = {LV_STYLE_BG_COLOR, 0};
     static lv_style_transition_dsc_t transition_dsc;
-    lv_style_transition_dsc_init(&transition_dsc, props, lv_anim_path_linear, 300, 0);
+    lv_style_transition_dsc_init(&transition_dsc, props, lv_anim_path_linear, 300, 0, NULL);
 
     static lv_style_t style_main;
     static lv_style_t style_indicator;

src/extra/themes/default/lv_theme_default.c

@@ -213,10 +213,10 @@ static void style_init(void)
     color_grey = theme.flags & MODE_DARK ? DARK_COLOR_GREY : LIGHT_COLOR_GREY;
 
     static lv_style_transition_dsc_t trans_delayed;
-    lv_style_transition_dsc_init(&trans_delayed, trans_props, lv_anim_path_linear, TRANSITION_TIME, 70);
+    lv_style_transition_dsc_init(&trans_delayed, trans_props, lv_anim_path_linear, TRANSITION_TIME, 70, NULL);
 
     static lv_style_transition_dsc_t trans_normal;
-    lv_style_transition_dsc_init(&trans_normal, trans_props, lv_anim_path_linear, TRANSITION_TIME, 0);
+    lv_style_transition_dsc_init(&trans_normal, trans_props, lv_anim_path_linear, TRANSITION_TIME, 0, NULL);
 
     style_init_reset(&styles->transition_delayed);
     lv_style_set_transition(&styles->transition_delayed, &trans_delayed); /*Go back to default state with delay*/

src/misc/lv_style.c

@@ -210,13 +210,16 @@ lv_res_t lv_style_get_prop(lv_style_t * style, lv_style_prop_t prop, lv_style_va
    return lv_style_get_prop_inlined(style, prop, value);
 }
 
-void lv_style_transition_dsc_init(lv_style_transition_dsc_t * tr, const lv_style_prop_t props[], lv_anim_path_cb_t path_cb, uint32_t time, uint32_t delay)
+void lv_style_transition_dsc_init(lv_style_transition_dsc_t * tr, const lv_style_prop_t props[], lv_anim_path_cb_t path_cb, uint32_t time, uint32_t delay, void * user_data)
 {
     lv_memset_00(tr, sizeof(lv_style_transition_dsc_t));
     tr->props = props;
     tr->path_xcb = path_cb == NULL ? lv_anim_path_linear : path_cb;
     tr->time = time;
     tr->delay = delay;
+#if LV_USE_USER_DATA
+    tr->user_data = user_data;
+#endif
 }
 
 lv_style_value_t lv_style_prop_get_default(lv_style_prop_t prop)

src/misc/lv_style.h

@@ -385,15 +385,16 @@ static inline lv_res_t lv_style_get_prop_inlined(lv_style_t * style, lv_style_pr
  * Initialize a transition descriptor.
  * @param tr        pointer to a transition descriptor to initialize
  * @param props     an array with the properties to transition. The last element must be zero.
- * @param path_cb  and animation path (ease) callback. If `NULL` liner path will be used.
+ * @param path_cb   an animation path (ease) callback. If `NULL` liner path will be used.
  * @param time      duration of the transition in [ms]
  * @param delay     delay before the transition in [ms]
+ * @param user_data any custom data that will be saved in the transition animation and will be available when `path_cb` is called
  * @example
  * const static lv_style_prop_t trans_props[] = { LV_STYLE_BG_OPA, LV_STYLE_BG_COLOR, 0 };
  *  static lv_style_transition_dsc_t trans1;
- *  lv_style_transition_dsc_init(&trans1, trans_props, NULL, 300, 0);
+ *  lv_style_transition_dsc_init(&trans1, trans_props, NULL, 300, 0, NULL);
  */
-void lv_style_transition_dsc_init(lv_style_transition_dsc_t * tr, const lv_style_prop_t props[], lv_anim_path_cb_t path_cb, uint32_t time, uint32_t delay);
+void lv_style_transition_dsc_init(lv_style_transition_dsc_t * tr, const lv_style_prop_t props[], lv_anim_path_cb_t path_cb, uint32_t time, uint32_t delay, void * user_data);
 
 /**
  * Get the default value of a property