LCUI_API int GraphLayer_GetLayers( LCUI_GraphLayer *glayer, LCUI_Rect rect,
LCUI_Queue *queue )
{
//_DEBUG_MSG("rect: %d,%d,%d,%d\n",
//rect.x, rect.y, rect.width, rect.height);
return __GraphLayer_GetLayers( glayer, glayer, rect, queue );
}
static int
__GraphLayer_GetLayers(
LCUI_GraphLayer *root_glayer,
LCUI_GraphLayer *glayer,
LCUI_Rect rect, LCUI_Queue *queue )
{
int i, total;
LCUI_Pos pos;
LCUI_Rect tmp;
LCUI_GraphLayer *child;
LCUI_Queue *child_list;
if( !glayer ) {
//_DEBUG_MSG("!glayer\n");
return -1;
}
if( !glayer->visible ) {
//_DEBUG_MSG("!glayer_visible\n");
return 1;
}
child_list = &glayer->child;
/* 从底到顶遍历子部件 */
total = Queue_GetTotal( child_list );
//_DEBUG_MSG( "root: %p, cur: %p, child total: %d\n",
// root_glayer, glayer, total );
/* 从尾到首，从底到顶，遍历图层 */
for( i=total-1; i>=0; --i ) {
child = (LCUI_GraphLayer*)Queue_Get( child_list, i );
/* 忽略无效或不可见的图层 */
if( !child || !child->visible ) {
continue;
}
/* 获取子图层的有效区域及全局坐标 */
tmp = GraphLayer_GetValidRect( root_glayer, child );
pos = GraphLayer_GetGlobalPos( root_glayer, child );
//_DEBUG_MSG( "child: %p, pos: %d,%d, valid rect: %d,%d, %d, %d\n",
// child, pos.x, pos.y, tmp.x, tmp.y, tmp.width, tmp.height);
//Graph_PrintInfo( &child->graph );
/* 有效区域加上子部件的全局坐标 */
tmp.x += pos.x;
tmp.y += pos.y;
/* 判断区域是否有效 */
if( !LCUIRect_IsValid(tmp) ) {
continue;
}
/* 若该有效区域与目标区域重叠，则记录子部件，并进行递归 */
if( LCUIRect_Overlay(tmp, rect) ) {
Queue_AddPointer( queue, child );
__GraphLayer_GetLayers( root_glayer,
child, rect, queue );
}
}
return 0;
}