| /* |
| * 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 |
| * 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" |
| #include "core/layout/LayoutVideo.h" |
| |
| #include "core/HTMLNames.h" |
| #include "core/dom/Document.h" |
| #include "core/html/HTMLVideoElement.h" |
| #include "core/layout/LayoutFullScreen.h" |
| #include "core/paint/VideoPainter.h" |
| #include "public/platform/WebLayer.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| |
| LayoutVideo::LayoutVideo(HTMLVideoElement* video) |
| : LayoutMedia(video) |
| { |
| setIntrinsicSize(calculateIntrinsicSize()); |
| } |
| |
| LayoutVideo::~LayoutVideo() |
| { |
| } |
| |
| LayoutSize LayoutVideo::defaultSize() |
| { |
| return LayoutSize(defaultWidth, defaultHeight); |
| } |
| |
| void LayoutVideo::intrinsicSizeChanged() |
| { |
| if (videoElement()->shouldDisplayPosterImage()) |
| LayoutMedia::intrinsicSizeChanged(); |
| updateIntrinsicSize(); |
| } |
| |
| void LayoutVideo::updateIntrinsicSize() |
| { |
| LayoutSize size = calculateIntrinsicSize(); |
| size.scale(style()->effectiveZoom()); |
| |
| // Never set the element size to zero when in a media document. |
| if (size.isEmpty() && node()->ownerDocument() && node()->ownerDocument()->isMediaDocument()) |
| return; |
| |
| if (size == intrinsicSize()) |
| return; |
| |
| setIntrinsicSize(size); |
| setPreferredLogicalWidthsDirty(); |
| setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::SizeChanged); |
| } |
| |
| LayoutSize LayoutVideo::calculateIntrinsicSize() |
| { |
| HTMLVideoElement* video = videoElement(); |
| |
| // Spec text from 4.8.6 |
| // |
| // The intrinsic width of a video element's playback area is the intrinsic width |
| // of the video resource, if that is available; otherwise it is the intrinsic |
| // width of the poster frame, if that is available; otherwise it is 300 CSS pixels. |
| // |
| // The intrinsic height of a video element's playback area is the intrinsic height |
| // of the video resource, if that is available; otherwise it is the intrinsic |
| // height of the poster frame, if that is available; otherwise it is 150 CSS pixels. |
| WebMediaPlayer* webMediaPlayer = mediaElement()->webMediaPlayer(); |
| if (webMediaPlayer && video->readyState() >= HTMLVideoElement::HAVE_METADATA) { |
| IntSize size = webMediaPlayer->naturalSize(); |
| if (!size.isEmpty()) |
| return LayoutSize(size); |
| } |
| |
| if (video->shouldDisplayPosterImage() && !m_cachedImageSize.isEmpty() && !imageResource()->errorOccurred()) |
| return m_cachedImageSize; |
| |
| // <video> in standalone media documents should not use the default 300x150 |
| // size since they also have audio-only files. By setting the intrinsic |
| // size to 300x1 the video will resize itself in these cases, and audio will |
| // have the correct height (it needs to be > 0 for controls to layout properly). |
| if (video->ownerDocument() && video->ownerDocument()->isMediaDocument()) |
| return LayoutSize(defaultSize().width(), 1); |
| |
| return defaultSize(); |
| } |
| |
| void LayoutVideo::imageChanged(WrappedImagePtr newImage, const IntRect* rect) |
| { |
| LayoutMedia::imageChanged(newImage, rect); |
| |
| // Cache the image intrinsic size so we can continue to use it to draw the image correctly |
| // even if we know the video intrinsic size but aren't able to draw video frames yet |
| // (we don't want to scale the poster to the video size without keeping aspect ratio). |
| if (videoElement()->shouldDisplayPosterImage()) |
| m_cachedImageSize = intrinsicSize(); |
| |
| // The intrinsic size is now that of the image, but in case we already had the |
| // intrinsic size of the video we call this here to restore the video size. |
| updateIntrinsicSize(); |
| } |
| |
| IntRect LayoutVideo::videoBox() const |
| { |
| const LayoutSize* overriddenIntrinsicSize = nullptr; |
| if (videoElement()->shouldDisplayPosterImage()) |
| overriddenIntrinsicSize = &m_cachedImageSize; |
| |
| return pixelSnappedIntRect(replacedContentRect(overriddenIntrinsicSize)); |
| } |
| |
| bool LayoutVideo::shouldDisplayVideo() const |
| { |
| return !videoElement()->shouldDisplayPosterImage(); |
| } |
| |
| void LayoutVideo::paintReplaced(const PaintInfo& paintInfo, const LayoutPoint& paintOffset) |
| { |
| VideoPainter(*this).paintReplaced(paintInfo, paintOffset); |
| } |
| |
| bool LayoutVideo::acceleratedRenderingInUse() |
| { |
| WebLayer* webLayer = mediaElement()->platformLayer(); |
| return webLayer && !webLayer->isOrphan(); |
| } |
| |
| void LayoutVideo::layout() |
| { |
| updatePlayer(); |
| LayoutMedia::layout(); |
| } |
| |
| HTMLVideoElement* LayoutVideo::videoElement() const |
| { |
| return toHTMLVideoElement(node()); |
| } |
| |
| void LayoutVideo::updateFromElement() |
| { |
| LayoutMedia::updateFromElement(); |
| updatePlayer(); |
| |
| // If the DisplayMode of the video changed, then we need to paint. |
| setShouldDoFullPaintInvalidation(); |
| } |
| |
| void LayoutVideo::updatePlayer() |
| { |
| updateIntrinsicSize(); |
| |
| WebMediaPlayer* mediaPlayer = mediaElement()->webMediaPlayer(); |
| if (!mediaPlayer) |
| return; |
| |
| if (!videoElement()->inActiveDocument()) |
| return; |
| |
| videoElement()->setNeedsCompositingUpdate(); |
| } |
| |
| LayoutUnit LayoutVideo::computeReplacedLogicalWidth(ShouldComputePreferred shouldComputePreferred) const |
| { |
| return LayoutReplaced::computeReplacedLogicalWidth(shouldComputePreferred); |
| } |
| |
| LayoutUnit LayoutVideo::computeReplacedLogicalHeight() const |
| { |
| return LayoutReplaced::computeReplacedLogicalHeight(); |
| } |
| |
| LayoutUnit LayoutVideo::minimumReplacedHeight() const |
| { |
| return LayoutReplaced::minimumReplacedHeight(); |
| } |
| |
| bool LayoutVideo::supportsAcceleratedRendering() const |
| { |
| return !!mediaElement()->platformLayer(); |
| } |
| |
| static const LayoutBlock* layoutObjectPlaceholder(const LayoutObject* layoutObject) |
| { |
| LayoutObject* parent = layoutObject->parent(); |
| if (!parent) |
| return nullptr; |
| |
| LayoutFullScreen* fullScreen = parent->isLayoutFullScreen() ? toLayoutFullScreen(parent) : 0; |
| if (!fullScreen) |
| return nullptr; |
| |
| return fullScreen->placeholder(); |
| } |
| |
| LayoutUnit LayoutVideo::offsetLeft() const |
| { |
| if (const LayoutBlock* block = layoutObjectPlaceholder(this)) |
| return block->offsetLeft(); |
| return LayoutMedia::offsetLeft(); |
| } |
| |
| LayoutUnit LayoutVideo::offsetTop() const |
| { |
| if (const LayoutBlock* block = layoutObjectPlaceholder(this)) |
| return block->offsetTop(); |
| return LayoutMedia::offsetTop(); |
| } |
| |
| LayoutUnit LayoutVideo::offsetWidth() const |
| { |
| if (const LayoutBlock* block = layoutObjectPlaceholder(this)) |
| return block->offsetWidth(); |
| return LayoutMedia::offsetWidth(); |
| } |
| |
| LayoutUnit LayoutVideo::offsetHeight() const |
| { |
| if (const LayoutBlock* block = layoutObjectPlaceholder(this)) |
| return block->offsetHeight(); |
| return LayoutMedia::offsetHeight(); |
| } |
| |
| CompositingReasons LayoutVideo::additionalCompositingReasons() const |
| { |
| HTMLMediaElement* element = toHTMLMediaElement(node()); |
| if (element->isFullscreen() && element->usesOverlayFullscreenVideo()) |
| return CompositingReasonVideo; |
| |
| if (shouldDisplayVideo() && supportsAcceleratedRendering()) |
| return CompositingReasonVideo; |
| |
| return CompositingReasonNone; |
| } |
| |
| } // namespace blink |