minor scroll improvements

src/lv_core/lv_indev.c

@@ -910,6 +910,8 @@ static void indev_proc_press(lv_indev_proc_t * proc)
     proc->types.pointer.scroll_throw_vect.x += (proc->types.pointer.vect.x * 4) >> 3;
     proc->types.pointer.scroll_throw_vect.y += (proc->types.pointer.vect.y * 4) >> 3;
 
+    proc->types.pointer.scroll_throw_vect_ori = proc->types.pointer.scroll_throw_vect;
+
     if(indev_obj_act) {
         lv_signal_send(indev_obj_act, LV_SIGNAL_PRESSING, indev_act);
         if(indev_reset_check(proc)) return;

src/lv_core/lv_indev_scroll.c

@@ -215,10 +215,10 @@ lv_coord_t _lv_scroll_throw_predict(lv_indev_t * indev, lv_dir_t dir)
     lv_coord_t v;
     switch(dir) {
     case LV_DIR_VER:
-        v = indev->proc.types.pointer.scroll_throw_vect.y;
+        v = indev->proc.types.pointer.scroll_throw_vect_ori.y;
         break;
     case LV_DIR_HOR:
-        v = indev->proc.types.pointer.scroll_throw_vect.x;
+        v = indev->proc.types.pointer.scroll_throw_vect_ori.x;
         break;
     default:
         return 0;

src/lv_core/lv_obj_pos.c

@@ -158,8 +158,8 @@ void lv_obj_set_size(lv_obj_t * obj, lv_coord_t w, lv_coord_t h)
     if(parent) {
         lv_coord_t cont_w = lv_obj_get_width_fit(parent);
         lv_coord_t cont_h = lv_obj_get_height_fit(parent);
-        if(pct_w) w = (LV_COORD_GET_PCT(obj->w_set) * cont_w) / 100;
-        if(pct_h) h = (LV_COORD_GET_PCT(obj->h_set) * cont_h) / 100;
+        if(pct_w) w = (_LV_COORD_GET_PCT(obj->w_set) * cont_w) / 100;
+        if(pct_h) h = (_LV_COORD_GET_PCT(obj->h_set) * cont_h) / 100;
     }
 
     refr_size(obj, w, h);

src/lv_core/lv_obj_scroll.c

@@ -136,7 +136,8 @@ void lv_obj_scroll_by(lv_obj_t * obj, lv_coord_t x, lv_coord_t y, lv_anim_enable
  */
 void lv_obj_scroll_to(lv_obj_t * obj, lv_coord_t x, lv_coord_t y, lv_anim_enable_t anim_en)
 {
-
+    lv_obj_scroll_to_x(obj, x, anim_en);
+    lv_obj_scroll_to_y(obj, y, anim_en);
 }
 
 /**
@@ -258,6 +259,22 @@ lv_coord_t lv_obj_get_scroll_right(lv_obj_t * obj)
     return LV_MATH_MAX(child_res, self_w);
 }
 
+/**
+ * Get the X and Y coordinates where the scrolling would end for this object if a scrolling animation is in progress.
+ * In no scrolling animation give the current `left` or `top` scroll position.
+ * @param obj pointer to an object
+ * @param end poinr to point to store the result
+ */
+void lv_obj_get_scroll_end(struct _lv_obj_t  * obj, lv_point_t * end)
+{
+    lv_anim_t * a;
+    a = lv_anim_get(obj, (lv_anim_exec_xcb_t)scroll_anim_x_cb);
+    end->x = a ? -a->end : lv_obj_get_scroll_left(obj);
+
+    a = lv_anim_get(obj, (lv_anim_exec_xcb_t)scroll_anim_y_cb);
+    end->y = a ? -a->end : lv_obj_get_scroll_top(obj);
+}
+
 /**********************
  *   STATIC FUNCTIONS
  **********************/

src/lv_core/lv_obj_scroll.h

@@ -140,6 +140,13 @@ lv_coord_t lv_obj_get_scroll_left(const struct _lv_obj_t * obj);
  */
 lv_coord_t lv_obj_get_scroll_right(struct _lv_obj_t * obj);
 
+/**
+ * Get the X and Y coordinates where the scrolling would end for this object if a scrolling animation is in progress.
+ * In no scrolling animation give the current `left` or `top` scroll position.
+ * @param obj pointer to an object
+ * @param end poinr to point to store the result
+ */
+void lv_obj_get_scroll_end(struct _lv_obj_t  * obj, lv_point_t * end);
 
 /**********************
  *      MACROS

src/lv_hal/lv_hal_indev.h

@@ -134,6 +134,7 @@ typedef struct _lv_indev_proc_t {
             lv_point_t vect; /**< Difference between `act_point` and `last_point`. */
             lv_point_t scroll_sum; /*Count the dragged pixels to check LV_INDEV_DEF_DRAG_LIMIT*/
             lv_point_t scroll_throw_vect;
+            lv_point_t scroll_throw_vect_ori;
             struct _lv_obj_t * act_obj;      /*The object being pressed*/
             struct _lv_obj_t * last_obj;     /*The last object which was pressed (used by drag_throw and
                                                 other post-release event)*/

src/lv_misc/lv_area.h

@@ -233,7 +233,7 @@ void _lv_area_align(const lv_area_t * base, const lv_area_t * to_align, lv_align
 /*Special coordinates*/
 #define LV_COORD_PCT(x)      _LV_COORD_SPEC((x))
 #define LV_COORD_IS_PCT(x)   ((LV_COORD_IS_SPEC(x) && LV_COORD_GET_SPEC(x) <= 1000) ? true : false)
-#define LV_COORD_GET_PCT(x)  LV_COORD_GET_SPEC(x)
+#define _LV_COORD_GET_PCT(x)  LV_COORD_GET_SPEC(x)
 #define LV_SIZE_AUTO        _LV_COORD_SPEC(1001)
 #define LV_SIZE_STRETCH     _LV_COORD_SPEC(1002)