feat(gui): change the call timing and parameter list for the runtask()

BREAKING CHANGE: The runtask() method takes two arguments and is called before each task is processed.

Author: lc-soft

include/LCUI/gui/widget_base.h

@@ -132,6 +132,7 @@ typedef struct LCUI_WidgetPrototypeRec_ *LCUI_WidgetPrototype;
 typedef const struct LCUI_WidgetPrototypeRec_ *LCUI_WidgetPrototypeC;
 
 typedef void(*LCUI_WidgetFunction)(LCUI_Widget);
+typedef void(*LCUI_WidgetTaskHandler)(LCUI_Widget, int);
 typedef void(*LCUI_WidgetResizer)(LCUI_Widget, float*, float*);
 typedef void(*LCUI_WidgetAttrSetter)(LCUI_Widget, const char*, const char*);
 typedef void(*LCUI_WidgetTextSetter)(LCUI_Widget, const char*);
@@ -146,7 +147,7 @@ typedef struct LCUI_WidgetPrototypeRec_ {
 	LCUI_WidgetFunction refresh;		/**< 数据刷新函数 */
 	LCUI_WidgetFunction destroy;		/**< 析构函数 */
 	LCUI_WidgetFunction update;		/**< 样式处理函数 */
-	LCUI_WidgetFunction runtask;		/**< 自定义任务处理函数 */
+	LCUI_WidgetTaskHandler runtask;		/**< 自定义任务处理函数 */
 	LCUI_WidgetAttrSetter setattr;		/**< 属性设置函数 */
 	LCUI_WidgetTextSetter settext;		/**< 文本内容设置函数 */
 	LCUI_WidgetPropertyBinder bindprop;	/**< 属性绑定函数 */

src/gui/widget_task.c

@@ -640,19 +640,22 @@ static void Widget_UpdateSelf(LCUI_Widget w, LCUI_WidgetTaskContext ctx)
 
 	Widget_BeginDiff(w, ctx);
 	states = w->task.states;
-	if (states[LCUI_WTASK_USER] && w->proto && w->proto->runtask) {
-		states[LCUI_WTASK_USER] = FALSE;
-		w->proto->runtask(w);
-	}
 	w->task.for_self = FALSE;
 	for (i = 0; i < LCUI_WTASK_REFLOW; ++i) {
 		if (states[i]) {
+			if (w->proto && w->proto->runtask) {
+				w->proto->runtask(w, i);
+			}
 			states[i] = FALSE;
 			if (self.handlers[i]) {
 				self.handlers[i](w);
 			}
 		}
 	}
+	if (states[LCUI_WTASK_USER] && w->proto && w->proto->runtask) {
+		states[LCUI_WTASK_USER] = FALSE;
+		w->proto->runtask(w, LCUI_WTASK_USER);
+	}
 	Widget_EndDiff(w, ctx);
 	Widget_AddState(w, LCUI_WSTATE_UPDATED);
 }