/** 将 widget 与 sruface 进行绑定 */
static void LCUIDisplay_BindSurface( LCUI_Widget widget )
{
LCUI_Rect *p_rect;
SurfaceRecord *p_sr;
if( LCUIDisplay_GetBindSurface(widget) ) {
return;
}
p_sr = NEW( SurfaceRecord, 1 );
p_sr->widget = widget;
p_sr->surface = Surface_New();
Surface_SetCaptionW( p_sr->surface, widget->title );
p_rect = &widget->box.graph;
if( widget->style->sheet[key_top].is_valid &&
widget->style->sheet[key_left].is_valid ) {
Surface_Move( p_sr->surface, p_rect->x, p_rect->y );
}
Surface_Resize( p_sr->surface, p_rect->w, p_rect->h );
if( widget->computed_style.visible ) {
Surface_Show( p_sr->surface );
} else {
Surface_Hide( p_sr->surface );
}
Widget_InvalidateArea( widget, NULL, SV_GRAPH_BOX );
LinkedList_Append( &display.surfaces, p_sr );
}
void Widget_UpdateOpacity(LCUI_Widget w)
{
float opacity = 1.0;
LCUI_Style s = &w->style->sheet[key_opacity];
if (s->is_valid) {
switch (s->type) {
case LCUI_STYPE_VALUE:
opacity = 1.0f * s->value;
break;
case LCUI_STYPE_SCALE:
opacity = s->val_scale;
break;
default:
opacity = 1.0f;
break;
}
if (opacity > 1.0) {
opacity = 1.0;
} else if (opacity < 0.0) {
opacity = 0.0;
}
}
w->computed_style.opacity = opacity;
Widget_InvalidateArea(w, NULL, SV_GRAPH_BOX);
DEBUG_MSG("opacity: %0.2f\n", opacity);
}
void Widget_Destroy(LCUI_Widget w)
{
LCUI_Widget root = w;
assert(w->state != LCUI_WSTATE_DELETED);
while (root->parent) {
root = root->parent;
}
/* If this widget is not mounted in the root widget tree */
if (root != LCUIWidget.root) {
w->state = LCUI_WSTATE_DELETED;
Widget_ExecDestroy(w);
return;
}
if (w->parent) {
LCUI_Widget child;
LinkedListNode *node;
/* Update the index of the siblings behind it */
node = w->node.next;
while (node) {
child = node->data;
child->index -= 1;
node = node->next;
}
if (w->computed_style.position != SV_ABSOLUTE) {
Widget_UpdateLayout(w->parent);
}
Widget_InvalidateArea(w, NULL, SV_GRAPH_BOX);
Widget_AddToTrash(w);
}
}
void Widget_UpdateVisibility(LCUI_Widget w)
{
LCUI_Style s = &w->style->sheet[key_visibility];
LCUI_BOOL visible = w->computed_style.visible;
if (w->computed_style.display == SV_NONE) {
w->computed_style.visible = FALSE;
} else if (s->is_valid && s->type == LCUI_STYPE_STRING &&
strcmp(s->val_string, "hidden") == 0) {
w->computed_style.visible = FALSE;
} else {
w->computed_style.visible = TRUE;
}
if (visible == w->computed_style.visible) {
return;
}
if (w->parent) {
Widget_InvalidateArea(w, NULL, SV_GRAPH_BOX);
}
visible = w->computed_style.visible;
if (visible) {
Widget_PostSurfaceEvent(w, LCUI_WEVENT_SHOW, TRUE);
} else {
Widget_PostSurfaceEvent(w, LCUI_WEVENT_HIDE, TRUE);
}
}
/** 将 widget 与 sruface 进行绑定 */
static void LCUIDisplay_BindSurface( LCUI_Widget widget )
{
SurfaceRecord *p_sr;
LCUI_Rect *p_rect;
if( LCUIDisplay_GetBindSurface(widget) ) {
return;
}
p_sr = (SurfaceRecord*)LinkedList_Alloc( &display.surfaces );
p_sr->widget = widget;
/**
* 初次调用 Surface_New() 耗时较长， 所以先为 p_sr->surface 设置初
* 始值，避免在 Surface_New() 返回前被当成正常指针使用。
*/
p_sr->surface = NULL;
p_sr->surface = Surface_New();
Surface_SetCaptionW( p_sr->surface, widget->title );
p_rect = &widget->base.box.graph;
Surface_Move( p_sr->surface, p_rect->x, p_rect->y );
Surface_Resize( p_sr->surface, p_rect->w, p_rect->h );
if( widget->style.visible ) {
Surface_Show( p_sr->surface );
} else {
Surface_Hide( p_sr->surface );
}
Widget_InvalidateArea( widget, NULL, SV_GRAPH_BOX );
}
/** 响应顶级部件的各种事件 */
static void OnTopLevelWidgetEvent( LCUI_Widget w, LCUI_WidgetEvent *e, void *arg )
{
int e_type = *((int*)&arg);
LCUI_Surface surface;
LCUI_Rect *p_rect;
DEBUG_MSG("tip, e_type = %d\n", e_type);
surface = LCUIDisplay_GetBindSurface( e->target );
if( display.mode == LDM_SEAMLESS ) {
if( !surface && e_type != WET_ADD ) {
return;
}
} else if ( e->target == LCUIRootWidget ) {
if( !surface && e_type != WET_ADD ) {
return;
}
} else {
return;
}
p_rect = &e->target->base.box.graph;
switch( e_type ) {
case WET_ADD:
LCUIDisplay_BindSurface( e->target );
break;
case WET_REMOVE:
case WET_DESTROY:
LCUIDisplay_UnbindSurface( e->target );
break;
case WET_SHOW:
Surface_Show( surface );
break;
case WET_HIDE:
Surface_Hide( surface );
break;
case WET_TITLE:
//_DEBUG_MSG("%S\n", e->target->title );
Surface_SetCaptionW( surface, e->target->title );
break;
case WET_RESIZE:
DEBUG_MSG( "resize, w: %d, h: %d\n", p_rect->w, p_rect->h );
Surface_Resize( surface, p_rect->w, p_rect->h );
Widget_InvalidateArea( w, NULL, SV_GRAPH_BOX );
if( w == LCUIRootWidget && display.mode != LDM_SEAMLESS ) {
LCUIDisplay_ExecResize( p_rect->w, p_rect->h );
}
break;
case WET_MOVE:
DEBUG_MSG( "x: %d, y: %d\n", p_rect->left, p_rect->top );
Surface_Move( surface, p_rect->left, p_rect->top );
break;
default: break;
}
}
/** 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;
}
}
void Widget_Empty(LCUI_Widget w)
{
LCUI_Widget root = w;
while (root->parent) {
root = root->parent;
}
if (root == LCUIWidget.root) {
LinkedListNode *next, *node;
node = w->children.head.next;
while (node) {
next = node->next;
Widget_AddToTrash(node->data);
node = next;
}
Widget_InvalidateArea(w, NULL, SV_GRAPH_BOX);
Widget_AddTask(w, LCUI_WTASK_LAYOUT);
} else {
Widget_DestroyChildren(w);
}
}
/** 处理刷新（标记整个部件区域为脏矩形） */
static void HandleRefresh(LCUI_Widget w)
{
DEBUG_MSG("refresh\n");
Widget_InvalidateArea(w, NULL, SV_GRAPH_BOX);
}
/** 处理主体刷新（标记主体区域为脏矩形，但不包括阴影区域） */
static void HandleBody(LCUI_Widget w)
{
Widget_InvalidateArea(w, NULL, SV_BORDER_BOX);
}
void Widget_UpdatePosition(LCUI_Widget w)
{
LCUI_RectF rect;
int position = ComputeStyleOption(w, key_position, SV_STATIC);
int valign = ComputeStyleOption(w, key_vertical_align, SV_TOP);
w->computed_style.vertical_align = valign;
w->computed_style.left = ComputeXMetric(w, key_left);
w->computed_style.right = ComputeXMetric(w, key_right);
w->computed_style.top = ComputeYMetric(w, key_top);
w->computed_style.bottom = ComputeYMetric(w, key_bottom);
if (w->parent && w->computed_style.position != position) {
w->computed_style.position = position;
Widget_UpdateLayout(w->parent);
Widget_ClearComputedSize(w);
Widget_UpdateChildrenSize(w);
/* 当部件尺寸是按百分比动态计算的时候需要重新计算尺寸 */
if (Widget_CheckStyleType(w, key_width, scale) ||
Widget_CheckStyleType(w, key_height, scale)) {
Widget_UpdateSize(w);
}
}
w->computed_style.position = position;
Widget_UpdateZIndex(w);
rect = w->box.canvas;
w->x = w->origin_x;
w->y = w->origin_y;
switch (position) {
case SV_ABSOLUTE:
w->x = w->y = 0;
if (!Widget_HasAutoStyle(w, key_left)) {
w->x = w->computed_style.left;
} else if (!Widget_HasAutoStyle(w, key_right)) {
if (w->parent) {
w->x = w->parent->box.border.width;
w->x -= w->width;
}
w->x -= w->computed_style.right;
}
if (!Widget_HasAutoStyle(w, key_top)) {
w->y = w->computed_style.top;
} else if (!Widget_HasAutoStyle(w, key_bottom)) {
if (w->parent) {
w->y = w->parent->box.border.height;
w->y -= w->height;
}
w->y -= w->computed_style.bottom;
}
break;
case SV_RELATIVE:
if (!Widget_HasAutoStyle(w, key_left)) {
w->x += w->computed_style.left;
} else if (!Widget_HasAutoStyle(w, key_right)) {
w->x -= w->computed_style.right;
}
if (!Widget_HasAutoStyle(w, key_top)) {
w->y += w->computed_style.top;
} else if (!Widget_HasAutoStyle(w, key_bottom)) {
w->y -= w->computed_style.bottom;
}
default:
if (w->parent) {
w->x += w->parent->padding.left;
w->y += w->parent->padding.top;
}
break;
}
switch (valign) {
case SV_MIDDLE:
if (!w->parent) {
break;
}
w->y += (w->parent->box.content.height - w->height) / 2;
break;
case SV_BOTTOM:
if (!w->parent) {
break;
}
w->y += w->parent->box.content.height - w->height;
case SV_TOP:
default:
break;
}
w->box.outer.x = w->x;
w->box.outer.y = w->y;
w->x += w->margin.left;
w->y += w->margin.top;
/* 以x、y为基础 */
w->box.padding.x = w->x;
w->box.padding.y = w->y;
w->box.border.x = w->x;
w->box.border.y = w->y;
w->box.canvas.x = w->x;
w->box.canvas.y = w->y;
/* 计算各个框的坐标 */
w->box.padding.x += w->computed_style.border.left.width;
w->box.padding.y += w->computed_style.border.top.width;
w->box.content.x = w->box.padding.x + w->padding.left;
w->box.content.y = w->box.padding.y + w->padding.top;
w->box.canvas.x -= Widget_GetBoxShadowOffsetX(w);
w->box.canvas.y -= Widget_GetBoxShadowOffsetY(w);
if (w->parent) {
/* 标记移动前后的区域 */
Widget_InvalidateArea(w, NULL, SV_GRAPH_BOX);
Widget_InvalidateArea(w->parent, &rect, SV_PADDING_BOX);
}
/* 检测是否为顶级部件并做相应处理 */
Widget_PostSurfaceEvent(w, LCUI_WEVENT_MOVE, TRUE);
}
void Widget_UpdateSize(LCUI_Widget w)
{
int box_sizing;
LCUI_RectF rect = w->box.canvas;
LCUI_Rect2F padding = w->padding;
box_sizing = ComputeStyleOption(w, key_box_sizing, SV_CONTENT_BOX);
w->computed_style.box_sizing = box_sizing;
Widget_ComputePadding(w);
Widget_ComputeSize(w);
/* 如果左右外间距是 auto 类型的，则需要计算外间距 */
if (w->style->sheet[key_margin_left].is_valid &&
w->style->sheet[key_margin_left].type == LCUI_STYPE_AUTO) {
Widget_UpdateMargin(w);
} else if (w->style->sheet[key_margin_right].is_valid &&
w->style->sheet[key_margin_right].type == LCUI_STYPE_AUTO) {
Widget_UpdateMargin(w);
}
/* 若尺寸无变化则不继续处理 */
if (rect.width == w->box.canvas.width &&
rect.height == w->box.canvas.height &&
padding.top == w->padding.top &&
padding.right == w->padding.right &&
padding.bottom == w->padding.bottom &&
padding.left == w->padding.left) {
return;
}
/* 若在变化前后的宽高中至少有一个为 0，则不继续处理 */
if ((w->box.canvas.width <= 0 || w->box.canvas.height <= 0) &&
(rect.width <= 0 || rect.height <= 0)) {
return;
}
Widget_UpdateLayout(w);
/* 如果垂直对齐方式不为顶部对齐 */
if (w->computed_style.vertical_align != SV_TOP) {
Widget_UpdatePosition(w);
} else if (w->computed_style.position == SV_ABSOLUTE) {
/* 如果是绝对定位，且指定了右间距或底间距 */
if (!Widget_HasAutoStyle(w, key_right) ||
!Widget_HasAutoStyle(w, key_bottom)) {
Widget_UpdatePosition(w);
}
}
if (w->parent) {
/* Mark old area and new area need to repaint */
Widget_InvalidateArea(w->parent, &rect, SV_PADDING_BOX);
rect.width = w->box.canvas.width;
rect.height = w->box.canvas.height;
Widget_InvalidateArea(w->parent, &rect, SV_PADDING_BOX);
/* If its width depends on the parent, there is no need to
* repeatedly update the parent size and layout.
* See Widget_ComputeStaticSize() for more details. */
if (!Widget_HasParentDependentWidth(w)) {
if (Widget_HasAutoStyle(w->parent, key_width) ||
Widget_HasAutoStyle(w->parent, key_height)) {
Widget_AddTask(w->parent, LCUI_WTASK_RESIZE);
}
if (w->computed_style.display != SV_NONE &&
w->computed_style.position == SV_STATIC) {
Widget_UpdateLayout(w->parent);
}
}
}
Widget_SendResizeEvent(w);
Widget_UpdateChildrenSize(w);
}