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      1 /*
      2  * Copyright (C) 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 
     28 #include "core/rendering/RenderMedia.h"
     29 
     30 #include "core/html/HTMLMediaElement.h"
     31 #include "core/rendering/RenderFlowThread.h"
     32 #include "core/rendering/RenderView.h"
     33 
     34 namespace WebCore {
     35 
     36 RenderMedia::RenderMedia(HTMLMediaElement* video)
     37     : RenderImage(video)
     38 {
     39     setImageResource(RenderImageResource::create());
     40 }
     41 
     42 RenderMedia::RenderMedia(HTMLMediaElement* video, const IntSize& intrinsicSize)
     43     : RenderImage(video)
     44 {
     45     setImageResource(RenderImageResource::create());
     46     setIntrinsicSize(intrinsicSize);
     47 }
     48 
     49 RenderMedia::~RenderMedia()
     50 {
     51 }
     52 
     53 HTMLMediaElement* RenderMedia::mediaElement() const
     54 {
     55     return toMediaElement(node());
     56 }
     57 
     58 void RenderMedia::layout()
     59 {
     60     StackStats::LayoutCheckPoint layoutCheckPoint;
     61     LayoutSize oldSize = contentBoxRect().size();
     62 
     63     RenderImage::layout();
     64 
     65     RenderBox* controlsRenderer = toRenderBox(m_children.firstChild());
     66     if (!controlsRenderer)
     67         return;
     68 
     69     bool controlsNeedLayout = controlsRenderer->needsLayout();
     70     // If the region chain has changed we also need to relayout the controls to update the region box info.
     71     // FIXME: We can do better once we compute region box info for RenderReplaced, not only for RenderBlock.
     72     const RenderFlowThread* flowThread = flowThreadContainingBlock();
     73     if (flowThread && !controlsNeedLayout) {
     74         if (flowThread->pageLogicalSizeChanged())
     75             controlsNeedLayout = true;
     76     }
     77 
     78     LayoutSize newSize = contentBoxRect().size();
     79     if (newSize == oldSize && !controlsNeedLayout)
     80         return;
     81 
     82     // When calling layout() on a child node, a parent must either push a LayoutStateMaintainter, or
     83     // instantiate LayoutStateDisabler. Since using a LayoutStateMaintainer is slightly more efficient,
     84     // and this method will be called many times per second during playback, use a LayoutStateMaintainer:
     85     LayoutStateMaintainer statePusher(view(), this, locationOffset(), hasTransform() || hasReflection() || style()->isFlippedBlocksWritingMode());
     86 
     87     controlsRenderer->setLocation(LayoutPoint(borderLeft(), borderTop()) + LayoutSize(paddingLeft(), paddingTop()));
     88     controlsRenderer->style()->setHeight(Length(newSize.height(), Fixed));
     89     controlsRenderer->style()->setWidth(Length(newSize.width(), Fixed));
     90     controlsRenderer->forceLayout();
     91     clearNeedsLayout();
     92 
     93     statePusher.pop();
     94 }
     95 
     96 void RenderMedia::paintReplaced(PaintInfo&, const LayoutPoint&)
     97 {
     98 }
     99 
    100 } // namespace WebCore
    101