/** 当前部件的绘制函数 */
static void Widget_OnPaint( LCUI_Widget w, LCUI_PaintContext paint )
{
LCUI_WidgetClass *wc;
LCUI_Size box_size;
box_size.w = w->base.box.content.width;
box_size.h = w->base.box.content.height;
Graph_DrawBackground( paint, &box_size, &w->style.background );
Graph_DrawBoxShadow( paint, &box_size, &w->style.shadow );
//Widget_DrawBorder( ... );
wc = LCUIWidget_GetClass( w->type_name );
wc && wc->methods.paint ? wc->methods.paint(w, paint):FALSE;
}
int Widget_UpdateEx( LCUI_Widget w, LCUI_BOOL has_timeout )
{
int i;
LCUI_BOOL *buffer;
LinkedListNode *node, *next;
/* 如果该部件没有任务需要处理、或者被其它线程占用 */
if( !w->task.for_self || LCUIMutex_TryLock( &w->mutex ) != 0 ) {
goto proc_children_task;
}
w->task.for_self = FALSE;
buffer = w->task.buffer;
/* 如果有用户自定义任务 */
if( buffer[WTT_USER] ) {
LCUI_WidgetClass *wc;
wc = LCUIWidget_GetClass( w->type );
wc ? wc->task_handler( w ) : FALSE;
}
for( i = 0; i < WTT_USER; ++i ) {
if( buffer[i] ) {
buffer[i] = FALSE;
if( self.handlers[i] ) {
self.handlers[i]( w );
}
} else {
buffer[i] = FALSE;
}
}
LCUIMutex_Unlock( &w->mutex );
/* 如果部件还处于未准备完毕的状态 */
if( w->state < WSTATE_READY ) {
w->state |= WSTATE_UPDATED;
/* 如果部件已经准备完毕则触发 ready 事件 */
if( w->state == WSTATE_READY ) {
LCUI_WidgetEventRec e;
e.type = WET_READY;
e.cancel_bubble = TRUE;
Widget_TriggerEvent( w, &e, NULL );
w->state = WSTATE_NORMAL;
}
}
self.count += 1;
proc_children_task:
if( !w->task.for_children ) {
return w->task.for_self;
}
/* 如果子级部件中有待处理的部件，则递归进去 */
w->task.for_children = FALSE;
node = w->children.head.next;
while( node ) {
LCUI_Widget child = node->data;
/* 如果当前部件有销毁任务，结点空间会连同部件一起被
* 释放，为避免因访问非法空间而出现异常，预先保存下
* 个结点。
*/
next = node->next;
/* 如果该级部件的任务需要留到下次再处理 */
if( Widget_UpdateEx( child, has_timeout ) ) {
w->task.for_children = TRUE;
}
if( has_timeout ) {
if( !self.is_timeout && self.count >= 50 ) {
self.count = 0;
if( LCUI_GetTime() >= self.timeout ) {
self.is_timeout = TRUE;
}
}
if( self.is_timeout ) {
break;
}
}
node = next;
}
return w->task.for_self || w->task.for_children;
}
