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/*
* Copyright (C) 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(FULLSCREEN_API)
#include "RenderFullScreen.h"
#include "RenderBlockFlow.h"
#include "RenderLayer.h"
#include "RenderLayerCompositor.h"
namespace WebCore {
class RenderFullScreenPlaceholder final : public RenderBlockFlow {
public:
RenderFullScreenPlaceholder(RenderFullScreen& owner, PassRef<RenderStyle> style)
: RenderBlockFlow(owner.document(), WTF::move(style))
, m_owner(owner)
{
}
private:
virtual bool isRenderFullScreenPlaceholder() const { return true; }
virtual void willBeDestroyed();
RenderFullScreen& m_owner;
};
void RenderFullScreenPlaceholder::willBeDestroyed()
{
m_owner.setPlaceholder(0);
RenderBlockFlow::willBeDestroyed();
}
RenderFullScreen::RenderFullScreen(Document& document, PassRef<RenderStyle> style)
: RenderFlexibleBox(document, WTF::move(style))
, m_placeholder(0)
{
setReplaced(false);
}
void RenderFullScreen::willBeDestroyed()
{
if (m_placeholder) {
removeFromParent();
if (!m_placeholder->beingDestroyed())
m_placeholder->destroy();
ASSERT(!m_placeholder);
}
// RenderObjects are unretained, so notify the document (which holds a pointer to a RenderFullScreen)
// if it's RenderFullScreen is destroyed.
if (document().fullScreenRenderer() == this)
document().fullScreenRendererDestroyed();
RenderFlexibleBox::willBeDestroyed();
}
static PassRef<RenderStyle> createFullScreenStyle()
{
auto fullscreenStyle = RenderStyle::createDefaultStyle();
// Create a stacking context:
fullscreenStyle.get().setZIndex(INT_MAX);
fullscreenStyle.get().setFontDescription(FontDescription());
fullscreenStyle.get().font().update(0);
fullscreenStyle.get().setDisplay(FLEX);
fullscreenStyle.get().setJustifyContent(JustifyCenter);
fullscreenStyle.get().setAlignItems(AlignCenter);
fullscreenStyle.get().setFlexDirection(FlowColumn);
fullscreenStyle.get().setPosition(FixedPosition);
fullscreenStyle.get().setWidth(Length(100.0, Percent));
fullscreenStyle.get().setHeight(Length(100.0, Percent));
fullscreenStyle.get().setLeft(Length(0, WebCore::Fixed));
fullscreenStyle.get().setTop(Length(0, WebCore::Fixed));
fullscreenStyle.get().setBackgroundColor(Color::black);
return fullscreenStyle;
}
RenderFullScreen* RenderFullScreen::wrapRenderer(RenderObject* object, RenderElement* parent, Document& document)
{
RenderFullScreen* fullscreenRenderer = new RenderFullScreen(document, createFullScreenStyle());
fullscreenRenderer->initializeStyle();
if (parent && !parent->isChildAllowed(*fullscreenRenderer, fullscreenRenderer->style())) {
fullscreenRenderer->destroy();
return 0;
}
if (object) {
// |object->parent()| can be null if the object is not yet attached
// to |parent|.
if (RenderElement* parent = object->parent()) {
RenderBlock* containingBlock = object->containingBlock();
ASSERT(containingBlock);
// Since we are moving the |object| to a new parent |fullscreenRenderer|,
// the line box tree underneath our |containingBlock| is not longer valid.
containingBlock->deleteLines();
parent->addChild(fullscreenRenderer, object);
object->removeFromParent();
// Always just do a full layout to ensure that line boxes get deleted properly.
// Because objects moved from |parent| to |fullscreenRenderer|, we want to
// make new line boxes instead of leaving the old ones around.
parent->setNeedsLayoutAndPrefWidthsRecalc();
containingBlock->setNeedsLayoutAndPrefWidthsRecalc();
}
fullscreenRenderer->addChild(object);
fullscreenRenderer->setNeedsLayoutAndPrefWidthsRecalc();
}
document.setFullScreenRenderer(fullscreenRenderer);
return fullscreenRenderer;
}
void RenderFullScreen::unwrapRenderer(bool& requiresRenderTreeRebuild)
{
requiresRenderTreeRebuild = false;
if (parent()) {
auto* child = firstChild();
// Things can get very complicated with anonymous block generation.
// We can restore correctly without rebuild in simple cases only.
// FIXME: We should have a mechanism for removing a block without reconstructing the tree.
if (child != lastChild())
requiresRenderTreeRebuild = true;
else if (child && child->isAnonymousBlock()) {
auto& anonymousBlock = toRenderBlock(*child);
if (anonymousBlock.firstChild() != anonymousBlock.lastChild())
requiresRenderTreeRebuild = true;
}
while ((child = firstChild())) {
if (child->isAnonymousBlock() && !requiresRenderTreeRebuild) {
if (auto* nonAnonymousChild = toRenderBlock(*child).firstChild())
child = nonAnonymousChild;
else {
child->removeFromParent();
child->destroy();
continue;
}
}
// We have to clear the override size, because as a flexbox, we
// may have set one on the child, and we don't want to leave that
// lying around on the child.
if (child->isBox())
toRenderBox(child)->clearOverrideSize();
child->removeFromParent();
parent()->addChild(child, this);
parent()->setNeedsLayoutAndPrefWidthsRecalc();
}
}
if (placeholder())
placeholder()->removeFromParent();
removeFromParent();
document().setFullScreenRenderer(0);
}
void RenderFullScreen::setPlaceholder(RenderBlock* placeholder)
{
m_placeholder = placeholder;
}
void RenderFullScreen::createPlaceholder(PassRef<RenderStyle> style, const LayoutRect& frameRect)
{
if (style.get().width().isAuto())
style.get().setWidth(Length(frameRect.width(), Fixed));
if (style.get().height().isAuto())
style.get().setHeight(Length(frameRect.height(), Fixed));
if (m_placeholder) {
m_placeholder->setStyle(WTF::move(style));
return;
}
m_placeholder = new RenderFullScreenPlaceholder(*this, WTF::move(style));
m_placeholder->initializeStyle();
if (parent()) {
parent()->addChild(m_placeholder, this);
parent()->setNeedsLayoutAndPrefWidthsRecalc();
}
}
}
#endif
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