Source/WebCore/rendering/RenderMedia.cpp

/*
 * Copyright (C) 2007, 2008, 2009, 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
 * 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
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 */

#include "config.h"

#if ENABLE(VIDEO)
#include "RenderMedia.h"

#include "RenderFlowThread.h"
#include "RenderView.h"
#include <wtf/StackStats.h>

namespace WebCore {

RenderMedia::RenderMedia(HTMLMediaElement& element, PassRef<RenderStyle> style)
    : RenderImage(element, std::move(style))
{
    setImageResource(RenderImageResource::create());
}

RenderMedia::RenderMedia(HTMLMediaElement& element, PassRef<RenderStyle> style, const IntSize& intrinsicSize)
    : RenderImage(element, std::move(style))
{
    setImageResource(RenderImageResource::create());
    setIntrinsicSize(intrinsicSize);
}

RenderMedia::~RenderMedia()
{
}

void RenderMedia::layout()
{
    StackStats::LayoutCheckPoint layoutCheckPoint;
    LayoutSize oldSize = contentBoxRect().size();

    RenderImage::layout();

    RenderBox* controlsRenderer = toRenderBox(firstChild());
    if (!controlsRenderer)
        return;

    bool controlsNeedLayout = controlsRenderer->needsLayout();
    // If the region chain has changed we also need to relayout the controls to update the region box info.
    // FIXME: We can do better once we compute region box info for RenderReplaced, not only for RenderBlock.
    const RenderFlowThread* flowThread = flowThreadContainingBlock();
    if (flowThread && !controlsNeedLayout) {
        if (flowThread->pageLogicalSizeChanged())
            controlsNeedLayout = true;
    }

    LayoutSize newSize = contentBoxRect().size();
    if (newSize == oldSize && !controlsNeedLayout)
        return;

    // When calling layout() on a child node, a parent must either push a LayoutStateMaintainter, or 
    // instantiate LayoutStateDisabler. Since using a LayoutStateMaintainer is slightly more efficient,
    // and this method will be called many times per second during playback, use a LayoutStateMaintainer:
    LayoutStateMaintainer statePusher(&view(), this, locationOffset(), hasTransform() || hasReflection() || style().isFlippedBlocksWritingMode());

    controlsRenderer->setLocation(LayoutPoint(borderLeft(), borderTop()) + LayoutSize(paddingLeft(), paddingTop()));
    controlsRenderer->style().setHeight(Length(newSize.height(), Fixed));
    controlsRenderer->style().setWidth(Length(newSize.width(), Fixed));
    controlsRenderer->setNeedsLayout(MarkOnlyThis);
    controlsRenderer->layout();
    clearChildNeedsLayout();

    statePusher.pop();
}

void RenderMedia::paintReplaced(PaintInfo&, const LayoutPoint&)
{
}

} // namespace WebCore

#endif