/** 追加子部件 */
int $(Append)( LCUI_Widget container, LCUI_Widget widget )
{
int i, n;
LCUI_Widget old_container;
LCUI_WidgetEvent e;
DEBUG_MSG("container: %p, widget: %p\n", container, widget);
if( !container || !widget || container == widget->parent ) {
return -1;
}
if( container == widget ) {
return -2;
}
if( widget->parent ) {
old_container = widget->parent;
} else {
goto remove_done;
}
/* 移除在之前的容器中的记录 */
n = LinkedList_GetTotal( &old_container->children );
for( i=0; i<n; ++i ) {
LinkedList_Goto( &old_container->children, i );
if( LinkedList_Get(&old_container->children) == widget ) {
LinkedList_Delete( &old_container->children );
break;
}
}
/* 如果是从根级部件中移出，则触发 WET_REMOVE 事件 */
if( i < n && old_container == LCUIRootWidget ) {
e.type_name = "TopLevelWidget";
e.target = widget;
Widget_PostEvent( LCUIRootWidget, &e, (int*)WET_REMOVE );
}
n = LinkedList_GetTotal( &old_container->children_show );
for( i=0; i<n; ++i ) {
LinkedList_Goto( &old_container->children_show, i );
if( LinkedList_Get(&old_container->children_show) == widget ) {
LinkedList_Delete( &old_container->children_show );
break;
}
}
remove_done:
widget->parent = container;
LinkedList_AddData( &container->children, widget );
LinkedList_AddData( &container->children_show, widget );
/* 如果是添加至根部件内，则触发 WET_ADD 事件 */
if( container == LCUIRootWidget ) {
int ret;
e.type_name = "TopLevelWidget";
e.target = widget;
ret = Widget_PostEvent( LCUIRootWidget, &e, (int*)WET_ADD );
DEBUG_MSG("post done, ret = %d\n", ret);
}
Widget_UpdateTaskStatus( widget );
DEBUG_MSG("tip\n");
return 0;
}
/** 设备处理线程 */
static void DeviceThread( void *arg )
{
DeviceData *data_ptr;
int n, i, timeout_count = 0;
is_running = TRUE;
while( is_running ) {
LCUIMutex_Lock( &list_mutex );
n = LinkedList_GetTotal( &dev_list );
for( i=0; i<n; ++i ) {
data_ptr = (DeviceData*)LinkedList_Get( &dev_list );
if( !data_ptr || !data_ptr->proc ) {
continue;
}
if( data_ptr->proc() ) {
++timeout_count;
}
}
LCUIMutex_Unlock( &list_mutex );
if( timeout_count > 20 ) {
LCUI_MSleep( 10 );
timeout_count = 0;
}
LCUI_MSleep( 5 );
}
LCUIThread_Exit(NULL);
}
/** 直接将事件发送至事件处理器进行处理 */
int $(Send)( LCUI_EventBox box, const char *name, void *data )
{
int i, n;
LCUI_Event event;
LCUI_RBTreeNode *node;
LCUI_EventSlot *slot;
LCUI_EventHandler *handler;
if( !(node = RBTree_CustomSearch(&box->event_name, (const void*)name)) ) {
return -1;
}
if( !(node = RBTree_Search(&box->event_slot, node->key)) ) {
return -2;
}
slot = (LCUI_EventSlot*)node->data;
event.id = slot->id;
event.name = slot->name;
event.data = data;
event.destroy_data = NULL;
n = LinkedList_GetTotal( &slot->handlers );
LinkedList_Goto( &slot->handlers, 0 );
for( i=0; i<n; ++i ) {
handler = (LCUI_EventHandler*)LinkedList_Get( &slot->handlers );
handler->func( &event, handler->func_data );
LinkedList_ToNext( &slot->handlers );
}
return 0;
}
/** 解除事件连接 */
int $(Unbind)( LCUI_EventBox box, int handler_id )
{
int i, n;
LCUI_RBTreeNode *node;
LCUI_EventSlot *slot;
LCUI_EventHandler *handler;
if( !(node = RBTree_Search(&box->event_handler, handler_id)) ) {
return -1;
}
if( !(node = RBTree_Search(&box->event_slot, (int)(node->data))) ) {
return -2;
}
slot = (LCUI_EventSlot*)node->data;
LinkedList_Goto( &slot->handlers, 0 );
n = LinkedList_GetTotal( &slot->handlers );
for( i=0; i<n; ++i ) {
handler = (LCUI_EventHandler*)LinkedList_Get( &slot->handlers );
if( handler->id == handler_id ) {
LinkedList_Delete( &slot->handlers );
RBTree_Erase( &box->event_handler, handler_id );
return 0;
}
LinkedList_ToNext( &slot->handlers );
}
return -3;
}
/** 从已触发的事件记录中删除一个事件信息 */
int $(DeleteEvent)( LCUI_EventBox box )
{
LinkedList *elist;
elist = &box->events[box->current == 1 ? 0:1];
if( LinkedList_GetTotal( elist ) <= 0 ) {
return -2;
}
LinkedList_Delete( elist );
return 0;
}
/** 更新各种图形元素的显示 */
static void LCUIDisplay_Update(void)
{
int i, n, j, m;
LCUI_Rect *p_rect;
SurfaceRecord *p_sr;
LCUI_DirtyRectList rlist;
LCUI_PaintContext paint;
DirtyRectList_Init( &rlist );
n = LinkedList_GetTotal( &display.surfaces );
/* 遍历当前的 surface 记录列表 */
for( i=0; i<n; ++i ) {
LinkedList_Goto( &display.surfaces, i );
p_sr = (SurfaceRecord*)
LinkedList_Get( &display.surfaces );
if( !p_sr->widget || !p_sr->surface
|| !Surface_IsReady(p_sr->surface) ) {
continue;
}
/* 更新表面 */
Surface_Update( p_sr->surface );
/* 收集无效区域记录 */
Widget_ProcInvalidArea( p_sr->widget, &rlist );
m = LinkedList_GetTotal( &rlist );
DEBUG_MSG("proc invalid area, m = %d\n", m);
LinkedList_Goto( &rlist, 0 );
/* 在 surface 上逐个重绘无效区域 */
for( j=0; j<m; ++j ) {
p_rect = (LCUI_Rect*)LinkedList_Get( &rlist );
paint = Surface_BeginPaint( p_sr->surface, p_rect );
DEBUG_MSG( "[%s]: render rect: (%d,%d,%d,%d), %d\n", p_sr->widget->type, paint->rect.left, paint->rect.top, paint->rect.w, paint->rect.h, j );
Widget_Render( p_sr->widget, paint );
Surface_EndPaint( p_sr->surface, paint );
LinkedList_Delete( &rlist );
}
if( m > 0 ) {
Surface_Present( p_sr->surface );
}
}
LinkedList_Destroy( &rlist );
}
/** 将指定标签的样式数据从队列中删除，只删除队列尾部第一个匹配的标签 */
static void StyleTagStack_Delete( LCUI_StyleTagStack *tags, LCUI_StyleTagID tag )
{
int i, total;
LCUI_StyleTagData *p;
total = LinkedList_GetTotal( tags );
DEBUG_MSG("delete start, total tag: %d\n", total);
if(total <= 0) {
return;
}
for(i=total-1; i>=0; --i) {
LinkedList_Goto( tags, i );
p = (LCUI_StyleTagData*)LinkedList_Get( tags );
if( p->tag_id == tag ) {
LinkedList_Delete( tags );
break;
}
}
DEBUG_MSG("delete end, total tag: %d\n", LinkedList_GetTotal( tags ));
}
/** 获取当前的文本样式 */
LCUI_TextStyle* StyleTagStack_GetTextStyle( LCUI_StyleTagStack *tags )
{
LCUI_StyleTagData *tag_data;
LCUI_TextStyle *style_data;
int i, total, equal = 0, flags[MAX_TAG_NUM];
style_data = (LCUI_TextStyle*)malloc( sizeof(LCUI_TextStyle) );
TextStyle_Init( style_data );
memset( flags, 0, sizeof(flags) );
total = LinkedList_GetTotal( tags );
if(total <= 0) {
free( style_data );
return NULL;
}
/* 根据已经记录的各种样式，生成当前应有的文本样式 */
for(equal=0,i=total-1; i>=0; --i) {
LinkedList_Goto( tags, i );
tag_data = (LCUI_StyleTagData*)LinkedList_Get( tags );
DEBUG_MSG("tag id: %d\n", tag_data->tag_id);
switch( tag_data->tag_id ) {
case TAG_ID_COLOR:
if( flags[0] != 0 ) {
break;
}
style_data->_fore_color = TRUE;
style_data->fore_color = tag_data->style.color;
DEBUG_MSG("color: %d,%d,%d\n", data->fore_color.red,
data->fore_color.green, data->fore_color.blue);
flags[0] = 1;
++equal;
break;
case TAG_ID_SIZE:
if( flags[1] != 0 ) {
break;
}
style_data->_pixel_size = TRUE;
style_data->pixel_size = tag_data->style.size.px;
flags[1] = 1;
++equal;
break;
default: break;
}
if(equal == MAX_TAG_NUM) {
break;
}
}
if( equal == 0 ) {
free( style_data );
return NULL;
}
return style_data;
}
static void LCUIDisplay_CleanSurfaces( void )
{
int i, n;
SurfaceRecord *p_sr;
n = LinkedList_GetTotal( &display.surfaces );
for( i=0; i<n; ++i ) {
LinkedList_Goto( &display.surfaces, 0 );
p_sr = (SurfaceRecord*)
LinkedList_Get( &display.surfaces );
Surface_Delete( p_sr->surface );
LinkedList_Delete( &display.surfaces );
}
}
/* 销毁程序占用的资源 */
static void LCUIApp_Destroy(void)
{
if( LinkedList_GetTotal(&MainApp.loop_list) > 0 ) {
/* 等待其它线程上的主循环都完全退出 */
LCUICond_Wait( &MainApp.loop_list_empty );
}
/* 开始清理 */
LCUICond_Destroy( &MainApp.loop_list_empty );
LCUICond_Destroy( &MainApp.loop_cond );
LCUIMutex_Destroy( &MainApp.loop_mutex );
LCUIMutex_Destroy( &MainApp.loop_changed );
LCUIMutex_Destroy( &MainApp.task_run_mutex );
LCUIMutex_Destroy( &MainApp.task_list_mutex );
LinkedList_Destroy( &MainApp.loop_list );
}
/** 退出所有主循环 */
static void LCUIApp_QuitAllMainLoop(void)
{
LCUI_MainLoop loop;
int n = LinkedList_GetTotal( &MainApp.loop_list );
LinkedList_Goto( &MainApp.loop_list, 0 );
while( n-- ) {
loop = (LCUI_MainLoop)LinkedList_Get( &MainApp.loop_list );
if( !loop ) {
break;
}
loop->state = STATE_EXITED;
LinkedList_ToNext( &MainApp.loop_list );
}
LCUICond_Broadcast( &MainApp.loop_cond );
}
/** 获取指定按键的状态数据 */
static key_state* KeyStateRecord_FindData( int key_code )
{
int i, n;
key_state* data_ptr;
n = LinkedList_GetTotal( &key_state_record );
for( i=0; i<n; ++i ) {
data_ptr = (key_state*)LinkedList_Get( &key_state_record );
if( data_ptr && data_ptr->key_code == key_code ) {
return data_ptr;
}
LinkedList_ToNext( &key_state_record );
}
return NULL;
}
/** 从已触发的事件记录中取出（不会移除）一个事件信息 */
int $(GetEvent)( LCUI_EventBox box, LCUI_Event *ebuff )
{
int n;
LCUI_Event *event;
LinkedList *elist;
elist = &box->events[box->current == 1 ? 0:1];
n = LinkedList_GetTotal( elist );
if( n <= 0 ) {
return -1;
}
LinkedList_Goto( elist, 0 );
event = (LCUI_Event*)LinkedList_Get( elist );
*ebuff = *event;
return 0;
}
static LCUI_Surface LCUIDisplay_GetBindSurface( LCUI_Widget widget )
{
int i, n;
SurfaceRecord *p_sr;
n = LinkedList_GetTotal( &display.surfaces );
for( i=0; i<n; ++i ) {
LinkedList_Goto( &display.surfaces, i );
p_sr = (SurfaceRecord*)
LinkedList_Get( &display.surfaces );
if( p_sr->widget == widget ) {
return p_sr->surface;
}
}
return NULL;
}
/** 在 surface 主动产生无效区域的时候 */
static void OnInvalidRect( LCUI_Surface surface, LCUI_Rect *rect )
{
int i, n;
SurfaceRecord *p_sr;
n = LinkedList_GetTotal( &display.surfaces );
for( i=0; i<n; ++i ) {
LinkedList_Goto( &display.surfaces, i );
p_sr = (SurfaceRecord*)
LinkedList_Get( &display.surfaces );
if( p_sr->surface != surface ) {
continue;
}
Widget_InvalidateArea( p_sr->widget, rect, SV_GRAPH_BOX );
continue;
}
}
/**
* 获取部件中的无效区域
* @param[in] widget 目标部件
* @area[out] area 无效区域
*/
int Widget_GetInvalidArea( LCUI_Widget widget, LCUI_Rect *area )
{
LCUI_Rect *p_rect;
if( LinkedList_GetTotal(&widget->dirty_rects) <= 0 ) {
return -1;
}
LinkedList_Goto( &widget->dirty_rects, 0 );
DEBUG_MSG("list: %p, used node num: %d, current: %p, pos: %d\n",
&widget->dirty_rects, widget->dirty_rects.used_node_num,
widget->dirty_rects.current_node, widget->dirty_rects.current_node_pos);
p_rect = (LCUI_Rect*)LinkedList_Get( &widget->dirty_rects );
if( !p_rect ) {
return -2;
}
DEBUG_MSG("p_rect: %d,%d,%d,%d\n", p_rect->x, p_rect->y, p_rect->w, p_rect->h);
*area = *p_rect;
return 0;
}
/** 解除 widget 与 sruface 的绑定 */
static void LCUIDisplay_UnbindSurface( LCUI_Widget widget )
{
int i, n;
SurfaceRecord *p_sr;
n = LinkedList_GetTotal( &display.surfaces );
for( i=0; i<n; ++i ) {
LinkedList_Goto( &display.surfaces, i );
p_sr = (SurfaceRecord*)
LinkedList_Get( &display.surfaces );
if( p_sr->widget != widget ) {
continue;
}
Surface_Delete( p_sr->surface );
LinkedList_Delete( &display.surfaces );
break;
}
}
/** 停用设备处理模块 */
void LCUIModule_Device_End(void)
{
int n, i;
DeviceData *data_ptr;
LCUIMutex_Lock( &list_mutex );
n = LinkedList_GetTotal( &dev_list );
for( i=0; i<n; ++i ) {
data_ptr = (DeviceData*)LinkedList_Get( &dev_list );
if( !data_ptr ) {
break;
}
if( data_ptr->exit ) {
data_ptr->exit();
}
LinkedList_ToNext( &dev_list );
}
LCUIMutex_Unlock( &list_mutex );
}
/** 前置显示 */
int $(Front)( LCUI_Widget widget )
{
int i, n, src_pos = -1, des_pos = -1;
LCUI_Widget parent, child;
parent = widget->parent ? widget->parent:LCUIRootWidget;
n = LinkedList_GetTotal( &parent->children_show );
/* 先在队列中找到自己，以及z-index值小于或等于它的第一个部件 */
for( i=0; i<n; ++i ) {
LinkedList_Goto( &parent->children_show, i );
child = (LCUI_Widget)LinkedList_Get( &parent->children_show );
if( child == widget ) {
src_pos = i;
continue;
}
if( des_pos >= 0 ) {
if( src_pos >= 0 ) {
break;
}
continue;
}
/* 如果该位置的图层的z-index值不大于自己 */
if( child->style.z_index <= widget->style.z_index ) {
/* 如果未找到自己的源位置 */
if( src_pos == -1 ) {
des_pos = i;
continue;
}
/* 否则，退出循环，因为已经在前排了 */
break;
}
}
/* 没有找到就退出 */
if( des_pos == -1 || src_pos == -1 ) {
return -1;
}
/* 找到的话就移动位置 */
LinkedList_Goto( &parent->children_show, src_pos );
LinkedList_MoveTo( &parent->children_show, des_pos );
// XXX
return 0;
}
/** 派发当前待处理的事件至对应的处理器 */
int $(Dispatch)( LCUI_EventBox box )
{
int i, n;
LCUI_Event *e;
LinkedList *elist;
box->current = box->current ? 0:1;
elist = &box->events[box->current ? 0:1];
n = LinkedList_GetTotal( elist );
LinkedList_Goto( elist, 0 );
for( i=0; i<n; ++i ) {
e = (LCUI_Event*)LinkedList_Get( elist );
$(Send)( box, e->name, e->data );
e->destroy_data ? e->destroy_data( e->data ):0;
LinkedList_Goto( elist, 0 );
LinkedList_Delete( elist );
}
box->current = box->current ? 0:1;
return 0;
}
/** 更新数据 */
void TextLayer_Update( LCUI_TextLayer* layer, LinkedList *rect_list )
{
if( layer->task.update_bitmap ) {
TextLayer_InvalidateAllRowRect( layer );
TextLayer_ReloadCharBitmap( layer );
TextLayer_InvalidateAllRowRect( layer );
layer->task.update_bitmap = FALSE;
layer->task.redraw_all = TRUE;
}
if( layer->task.update_typeset ) {
TextLayer_TextTypeset( layer, layer->task.typeset_start_row );
layer->task.update_typeset = FALSE;
layer->task.typeset_start_row = 0;
}
/* 如果坐标偏移量有变化，记录各个文本行区域 */
if( layer->new_offset_x != layer->offset_x
|| layer->new_offset_y != layer->offset_y ) {
TextLayer_InvalidateAllRowRect( layer );
layer->offset_x = layer->new_offset_x;
layer->offset_y = layer->new_offset_y;
TextLayer_InvalidateAllRowRect( layer );
layer->task.redraw_all = TRUE;
}
if( rect_list ) {
int n;
void *data_ptr;
n = LinkedList_GetTotal( &layer->dirty_rect );
LinkedList_Goto( &layer->dirty_rect, 0 );
/* 转移脏矩形记录，供利用 */
while(n--) {
data_ptr = LinkedList_Get( &layer->dirty_rect );
LinkedList_AddDataCopy( rect_list, data_ptr );
LinkedList_ToNext( &layer->dirty_rect );
}
}
}
/** 从程序任务队列中删除有指定回调函数的任务 */
int LCUI_RemoveTask( CallBackFunc task_func, LCUI_BOOL need_lock )
{
int n;
LCUI_Task *exist_task;
if( need_lock ) {
LCUIMutex_Lock( &MainApp.task_list_mutex );
}
n = LinkedList_GetTotal( &MainApp.task_list );
for ( ; n>0; --n ) {
exist_task = (LCUI_Task*)LinkedList_Get( &MainApp.task_list );
if( exist_task && exist_task->func == task_func ) {
LinkedList_Delete( &MainApp.task_list );
} else {
LinkedList_ToNext( &MainApp.task_list );
}
}
if( need_lock ) {
LCUIMutex_Unlock( &MainApp.task_list_mutex );
}
return n;
}
/** 派发当前待处理的事件至对应的处理器 */
int $(Dispatch)( LCUI_EventBox box )
{
int i, n;
LCUI_Event *e;
LinkedList *elist;
elist = &box->events[box->current];
box->current = box->current ? 0:1;
n = LinkedList_GetTotal( elist );
LinkedList_Goto( elist, 0 );
DEBUG_MSG("event total: %d\n", n);
for( i=0; i<n; ++i ) {
e = (LCUI_Event*)LinkedList_Get( elist );
$(Send)( box, e->name, e->data );
e->destroy_data ? e->destroy_data( e->data ):0;
e->data = NULL;
LinkedList_Goto( elist, 0 );
LinkedList_Delete( elist );
}
DEBUG_MSG("quit\n");
return 0;
}
/** 清除已记录的无效矩形 */
void TextLayer_ClearInvalidRect( LCUI_TextLayer *layer )
{
int n;
LCUI_Rect *rect_ptr;
LCUI_Graph invalid_graph;
if( !layer->is_using_buffer ) {
DirtyRectList_Destroy( &layer->dirty_rect );
DirtyRectList_Init( &layer->dirty_rect );
return;
}
n = LinkedList_GetTotal( &layer->dirty_rect );
LinkedList_Goto( &layer->dirty_rect, 0 );
while(n--) {
rect_ptr = (LCUI_Rect*)LinkedList_Get( &layer->dirty_rect );
Graph_Quote( &invalid_graph, &layer->graph, rect_ptr );
Graph_FillAlpha( &invalid_graph, 0 );
LinkedList_ToNext( &layer->dirty_rect );
}
DirtyRectList_Destroy( &layer->dirty_rect );
DirtyRectList_Init( &layer->dirty_rect );
}
static int LCUIDisplay_Seamless( void )
{
int i, n;
LCUI_Widget widget;
DEBUG_MSG("display.mode: %d\n", display.mode);
switch( display.mode ) {
case LDM_SEAMLESS:
return 0;
case LDM_FULLSCREEN:
case LDM_WINDOWED:
default:
LCUIDisplay_CleanSurfaces();
break;
}
n = LinkedList_GetTotal( &LCUIRootWidget->children );
for( i=0; i<n; ++i ) {
LinkedList_Goto( &LCUIRootWidget->children, i );
widget = (LCUI_Widget)
LinkedList_Get( &LCUIRootWidget->children );
LCUIDisplay_BindSurface( widget );
}
display.mode = LDM_SEAMLESS;
return 0;
}
/** 运行目标主循环 */
int LCUI_MainLoop_Run( LCUI_MainLoop loop )
{
if( loop->state == STATE_RUNNING ) {
_DEBUG_MSG("error: main-loop already running.");
return -1;
}
DEBUG_MSG("loop: %p, enter\n", loop);
loop->state = STATE_RUNNING;
/* 将主循环记录插入至列表表头 */
LinkedList_Goto( &MainApp.loop_list, 0 );
LinkedList_Insert( &MainApp.loop_list, loop );
MainApp.loop = loop;
LCUIMutex_Lock( &MainApp.loop_changed );
/* 广播，让其它线程交出主循环运行权 */
LCUICond_Broadcast( &MainApp.loop_cond );
/* 获取运行权 */
LCUIMutex_Lock( &MainApp.loop_mutex );
LCUIMutex_Unlock( &MainApp.loop_changed );
loop->tid = LCUIThread_SelfID();
while( loop->state != STATE_EXITED ) {
if( LinkedList_GetTotal(&MainApp.task_list) <= 0 ) {
DEBUG_MSG("loop: %p, sleeping...\n", loop);
LCUICond_TimedWait( &MainApp.loop_cond, 1000 );
DEBUG_MSG("loop: %p, wakeup\n", loop);
/** 如果当前运行的主循环不是自己 */
if( MainApp.loop != loop ) {
loop->state = STATE_PAUSED;
DEBUG_MSG("loop: %p, release control.\n", loop);
LCUIMutex_Unlock( &MainApp.loop_mutex );
/* 等待其它线程获得主循环运行权 */
LCUIMutex_Lock( &MainApp.loop_changed );
LCUIMutex_Unlock( &MainApp.loop_changed );
DEBUG_MSG("loop: %p, waiting...\n", loop);
/* 等待其它线程释放主循环运行权 */
LCUIMutex_Lock( &MainApp.loop_mutex );
}
continue;
}
DEBUG_MSG("loop: %p, run task.\n", loop);
LCUI_RunTask();
}
loop->state = STATE_EXITED;
LinkedList_Goto( &MainApp.loop_list, 0 );
LinkedList_Delete( &MainApp.loop_list );
/* 获取处于列表表头的主循环 */
loop = (LCUI_MainLoop)LinkedList_Get( &MainApp.loop_list );
if( loop ) {
/* 改变当前运行的主循环 */
MainApp.loop = loop;
LCUICond_Broadcast( &MainApp.loop_cond );
}
/* 释放运行权 */
LCUIMutex_Unlock( &MainApp.loop_mutex );
/* 如果列表为空，一般意味着LCUI需要退出了 */
if( LinkedList_GetTotal( &MainApp.loop_list ) <= 0 ) {
/** 广播，通知相关线程开始进行清理操作 */
LCUICond_Broadcast( &MainApp.loop_list_empty );
}
DEBUG_MSG("loop: %p, exit\n", loop);
return 0;
}
/**
* 渲染指定部件呈现的图形内容
* @param[in] w 部件
* @param[in] paint 进行绘制时所需的上下文
*/
void Widget_Render( LCUI_Widget w, LCUI_PaintContext paint )
{
int i, content_left, content_top;
LCUI_Rect content_rect;
LCUI_Graph content_graph, self_graph, layer_graph;
LCUI_BOOL has_overlay, has_content_graph = FALSE,
has_self_graph = FALSE,has_layer_graph = FALSE,
is_cover_border = FALSE;
Graph_Init( &layer_graph );
Graph_Init( &self_graph );
Graph_Init( &content_graph );
/* 若部件本身是透明的 */
if( w->style.opacity < 1.0 ) {
has_self_graph = TRUE;
has_content_graph = TRUE;
has_layer_graph = TRUE;
} else {
/* 若使用了圆角边框，则判断当前脏矩形区域是否在圆角边框内
...
if( ... ) {
has_content_graph = TRUE;
is_cover_border = TRUE;
}
*/
}
/* 如果需要缓存自身的位图 */
if( has_self_graph ) {
LCUI_PaintContextRec_ self_paint;
/* 有位图缓存则直接截取出来，否则绘制一次 */
if( Graph_IsValid(&w->graph) ) {
Graph_Quote( &self_graph, &w->graph, &paint->rect );
} else {
Graph_Create(
&self_graph,
paint->rect.width, paint->rect.height
);
}
self_paint.canvas = self_graph;
self_paint.rect = paint->rect;
Widget_OnPaint( w, &self_paint );
} else {
/* 直接将部件绘制到目标位图缓存中 */
if( Graph_IsValid(&w->graph) ) {
Graph_Quote( &self_graph, &w->graph, &paint->rect );
Graph_Mix( &paint->canvas, &self_graph, Pos(0,0) );
Graph_WritePNG( "1,paint_canvas.png", &paint->canvas );
Graph_WritePNG( "2,self_graph.png", &self_graph );
} else {
Widget_OnPaint( w, paint );
}
}
/* 计算内容框相对于图层的坐标 */
content_left = w->base.box.content.x - w->base.box.graph.x;
content_top = w->base.box.content.y - w->base.box.graph.y;
/* 获取内容框 */
content_rect.x = content_left;
content_rect.y = content_top;
content_rect.width = w->base.box.content.width;
content_rect.height = w->base.box.content.height;
/* 获取内容框与脏矩形重叠的区域 */
has_overlay = LCUIRect_GetOverlayRect(
&content_rect, &paint->rect, &content_rect
);
/* 如果没有与内容框重叠，则跳过内容绘制 */
if( !has_overlay ) {
goto content_paint_done;
}
/* 将换重叠区域的坐标转换为相对于脏矩形的坐标 */
content_rect.x -= paint->rect.x;
content_rect.y -= paint->rect.y;
/* 若需要部件内容区的位图缓存 */
if( has_content_graph ) {
content_graph.color_type = COLOR_TYPE_ARGB;
Graph_Create( &content_graph, content_rect.w, content_rect.h );
} else {
/* 引用该区域的位图，作为内容框的位图 */
Graph_Quote( &content_graph, &paint->canvas, &content_rect );
}
i = LinkedList_GetTotal( &w->children_show );
/* 按照显示顺序，从底到顶，递归遍历子级部件 */
while( i-- ) {
LCUI_Widget child;
LCUI_Rect child_rect;
LCUI_PaintContextRec_ child_paint;
child = (LCUI_Widget)LinkedList_Get( &w->children_show );
if( !child->style.visible ) {
continue;
}
/* 将子部件的区域，由相对于内容框转换为相对于当前脏矩形 */
child_rect = child->base.box.graph;
child_rect.x += (content_left - paint->rect.x);
child_rect.y += (content_top - paint->rect.y);
/* 获取于内容框重叠的区域，作为子部件的绘制区域 */
has_overlay = LCUIRect_GetOverlayRect(
&content_rect, &child_rect, &child_paint.rect
);
/* 区域无效则不绘制 */
if( !has_overlay ) {
continue;
}
/* 将子部件绘制区域转换相对于当前部件内容框 */
child_rect.x = child_paint.rect.x - content_rect.x;
child_rect.y = child_paint.rect.y - content_rect.y;
child_rect.width = child_paint.rect.width;
child_rect.height = child_paint.rect.height;
/* 在内容位图中引用所需的区域，作为子部件的画布 */
Graph_Quote( &child_paint.canvas, &content_graph, &child_rect );
Widget_Render( child, &child_paint );
}
/* 如果与圆角边框重叠，则裁剪掉边框外的内容 */
if( is_cover_border ) {
/* content_graph ... */
}
content_paint_done:
/* 若需要绘制的是当前部件图层，则先混合部件自身位图和内容位图，得出当
* 前部件的图层，然后将该图层混合到输出的位图中
*/
if( has_layer_graph ) {
Graph_Init( &layer_graph );
layer_graph.color_type = COLOR_TYPE_ARGB;
Graph_Copy( &layer_graph, &self_graph );
Graph_Mix(
&layer_graph, &content_graph,
Pos(content_rect.x, content_rect.y)
);
layer_graph.opacity = w->style.opacity;
Graph_Mix( &paint->canvas, &layer_graph, Pos(0,0) );
}
else if( has_content_graph ) {
Graph_Mix(
&paint->canvas, &content_graph,
Pos(content_rect.x, content_rect.y)
);
}
Graph_WritePNG( "layer_graph.png", &layer_graph );
Graph_WritePNG( "self_graph.png", &self_graph );
Graph_WritePNG( "content_graph.png", &content_graph );
Graph_Free( &layer_graph );
Graph_Free( &self_graph );
Graph_Free( &content_graph );
}
static int _Widget_ProcInvalidArea( LCUI_Widget w, LCUI_BOOL is_root, int x, int y,
LCUI_Rect *valid_box, LCUI_DirtyRectList *rlist )
{
int i, n, count;
LCUI_Widget child;
LCUI_Rect rect, child_box, *r;
count = n = LinkedList_GetTotal( &w->dirty_rects );
/* 取出当前记录的脏矩形 */
for( i=0; i<n; ++i ) {
LinkedList_Goto( &w->dirty_rects, 0 );
r = (LCUI_Rect*)LinkedList_Get( &w->dirty_rects );
/* 若有独立位图缓存，则重绘脏矩形区域 */
if( Graph_IsValid(&w->graph) ) {
LCUI_PaintContextRec_ paint;
paint.rect = *r;
Graph_Quote( &paint.canvas, &w->graph, &paint.rect );
Widget_OnPaint( w, &paint );
}
/* 转换为相对于父部件的坐标 */
rect.x = r->x;
rect.y = r->y;
/* 如果当前是根部件，则不用加上自身坐标 */
if( !is_root ) {
rect.x += w->base.box.graph.x;
rect.y += w->base.box.graph.y;
}
rect.w = r->w;
rect.h = r->h;
/* 取出与容器内有效区域相交的区域 */
if( LCUIRect_GetOverlayRect(&rect, valid_box, &rect) ) {
/* 转换相对于根级部件的坐标 */
rect.x += x;
rect.y += y;
DirtyRectList_Add( rlist, &rect );
}
LinkedList_Delete( &w->dirty_rects );
}
/* 若子级部件没有脏矩形记录 */
if( !w->has_dirty_child ) {
return count;
}
/* 缩小有效区域到当前部件内容框内，若没有重叠区域，则不向子级部件递归 */
if( !LCUIRect_GetOverlayRect(valid_box, &w->base.box.content, &child_box) ) {
return count;
}
/* 转换有效区域的坐标，相对于当前部件的内容框 */
child_box.x -= w->base.box.content.x;
child_box.y -= w->base.box.content.y;
n = LinkedList_GetTotal( &w->children );
/* 向子级部件递归 */
for( i=0; i<n; ++i ) {
child = (LCUI_Widget)LinkedList_Get( &w->children );
if( !child->style.visible ) {
continue;
}
count += _Widget_ProcInvalidArea(
child, FALSE, child->base.box.graph.x + x,
child->base.box.graph.y + y, &child_box, rlist
);
}
return count;
}
