fix(anim): add lv_anim_get_playtime (#2745)

and migrate lv_anim_timeline_get_playtime to lv_anim_get_playtime

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

src/misc/lv_anim.c

@@ -116,6 +116,27 @@ lv_anim_t * lv_anim_start(const lv_anim_t * a)
     return new_anim;
 }
 
+uint32_t lv_anim_get_playtime(lv_anim_t * a)
+{
+    uint32_t playtime = LV_ANIM_PLAYTIME_INFINITE;
+
+    if(a->repeat_cnt == LV_ANIM_REPEAT_INFINITE)
+        return playtime;
+
+    playtime = a->time - a->act_time;
+    if(a->playback_now == 0)
+        playtime += a->playback_delay + a->playback_time;
+
+    if(a->repeat_cnt <= 1)
+        return playtime;
+
+    playtime += (a->repeat_delay + a->time +
+                 a->playback_delay + a->playback_time) *
+                (a->repeat_cnt - 1);
+
+    return playtime;
+}
+
 bool lv_anim_del(void * var, lv_anim_exec_xcb_t exec_cb)
 {
     lv_anim_t * a;

src/misc/lv_anim.h

@@ -23,6 +23,12 @@ extern "C" {
  *      DEFINES
  *********************/
 
+#define LV_ANIM_REPEAT_INFINITE      0xFFFF
+#define LV_ANIM_PLAYTIME_INFINITE    0xFFFFFFFF
+
+LV_EXPORT_CONST_INT(LV_ANIM_REPEAT_INFINITE);
+LV_EXPORT_CONST_INT(LV_ANIM_PLAYTIME_INFINITE);
+
 /**********************
  *      TYPEDEFS
  **********************/
@@ -33,9 +39,6 @@ typedef enum {
     LV_ANIM_ON,
 } lv_anim_enable_t;
 
-#define LV_ANIM_REPEAT_INFINITE      0xFFFF
-LV_EXPORT_CONST_INT(LV_ANIM_REPEAT_INFINITE);
-
 struct _lv_anim_t;
 
 /** Get the current value during an animation*/
@@ -300,6 +303,13 @@ static inline uint32_t lv_anim_get_delay(lv_anim_t * a)
     return -a->act_time;
 }
 
+/**
+ * Get the time used to play the animation.
+ * @param a pointer to an animation.
+ * @return the play time in milliseconds.
+ */
+uint32_t lv_anim_get_playtime(lv_anim_t * a);
+
 /**
  * Get the user_data field of the animation
  * @param   a pointer to an initialized `lv_anim_t` variable

src/misc/lv_anim_timeline.c

@@ -169,7 +169,10 @@ uint32_t lv_anim_timeline_get_playtime(lv_anim_timeline_t * at)
 
     uint32_t playtime = 0;
     for(uint32_t i = 0; i < at->anim_dsc_cnt; i++) {
-        uint32_t end = at->anim_dsc[i].start_time + at->anim_dsc[i].anim.time;
+        uint32_t end = lv_anim_get_playtime(&at->anim_dsc[i].anim);
+        if (end == LV_ANIM_PLAYTIME_INFINITE)
+            return end;
+        end += at->anim_dsc[i].start_time;
         if(end > playtime) {
             playtime = end;
         }