| /* |
| * 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 "core/layout/LayoutVideo.h" |
| |
| #include "core/dom/Document.h" |
| #include "core/html/media/HTMLVideoElement.h" |
| #include "core/html_names.h" |
| #include "core/layout/LayoutBlockFlow.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() = default; |
| |
| LayoutSize LayoutVideo::DefaultSize() { |
| return LayoutSize(kDefaultWidth, kDefaultHeight); |
| } |
| |
| 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() && GetNode()->ownerDocument() && |
| GetNode()->ownerDocument()->IsMediaDocument()) |
| return; |
| |
| if (size == IntrinsicSize()) |
| return; |
| |
| SetIntrinsicSize(size); |
| SetPreferredLogicalWidthsDirty(); |
| SetNeedsLayoutAndFullPaintInvalidation( |
| LayoutInvalidationReason::kSizeChanged); |
| } |
| |
| 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* web_media_player = MediaElement()->GetWebMediaPlayer(); |
| if (web_media_player && |
| video->getReadyState() >= HTMLVideoElement::kHaveMetadata) { |
| IntSize size = web_media_player->NaturalSize(); |
| if (!size.IsEmpty()) |
| return LayoutSize(size); |
| } |
| |
| if (video->ShouldDisplayPosterImage() && !cached_image_size_.IsEmpty() && |
| !ImageResource()->ErrorOccurred()) |
| return cached_image_size_; |
| |
| // <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(), LayoutUnit(1)); |
| |
| return DefaultSize(); |
| } |
| |
| void LayoutVideo::ImageChanged(WrappedImagePtr new_image, |
| CanDeferInvalidation defer, |
| const IntRect* rect) { |
| LayoutMedia::ImageChanged(new_image, defer, 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()) |
| cached_image_size_ = 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(); |
| } |
| |
| bool LayoutVideo::ShouldDisplayVideo() const { |
| return !VideoElement()->ShouldDisplayPosterImage(); |
| } |
| |
| void LayoutVideo::PaintReplaced(const PaintInfo& paint_info, |
| const LayoutPoint& paint_offset) const { |
| VideoPainter(*this).PaintReplaced(paint_info, paint_offset); |
| } |
| |
| void LayoutVideo::UpdateLayout() { |
| UpdatePlayer(); |
| LayoutMedia::UpdateLayout(); |
| } |
| |
| HTMLVideoElement* LayoutVideo::VideoElement() const { |
| return ToHTMLVideoElement(GetNode()); |
| } |
| |
| void LayoutVideo::UpdateFromElement() { |
| LayoutMedia::UpdateFromElement(); |
| UpdatePlayer(); |
| |
| // If the DisplayMode of the video changed, then we need to paint. |
| SetShouldDoFullPaintInvalidation(); |
| } |
| |
| void LayoutVideo::UpdatePlayer() { |
| UpdateIntrinsicSize(); |
| |
| WebMediaPlayer* media_player = MediaElement()->GetWebMediaPlayer(); |
| if (!media_player) |
| return; |
| |
| if (!VideoElement()->InActiveDocument()) |
| return; |
| |
| VideoElement()->SetNeedsCompositingUpdate(); |
| } |
| |
| LayoutUnit LayoutVideo::ComputeReplacedLogicalWidth( |
| ShouldComputePreferred should_compute_preferred) const { |
| return LayoutReplaced::ComputeReplacedLogicalWidth(should_compute_preferred); |
| } |
| |
| LayoutUnit LayoutVideo::ComputeReplacedLogicalHeight( |
| LayoutUnit estimated_used_width) const { |
| return LayoutReplaced::ComputeReplacedLogicalHeight(estimated_used_width); |
| } |
| |
| LayoutUnit LayoutVideo::MinimumReplacedHeight() const { |
| return LayoutReplaced::MinimumReplacedHeight(); |
| } |
| |
| LayoutRect LayoutVideo::ReplacedContentRect() const { |
| if (ShouldDisplayVideo()) { |
| // Video codecs may need to restart from an I-frame when the output is |
| // resized. Round size in advance to avoid 1px snap difference. |
| // TODO(trchen): The way of rounding is different from LayoutEmbeddedContent |
| // just to match existing behavior. This is probably a bug and We should |
| // unify it with LayoutEmbeddedContent. |
| return LayoutRect(PixelSnappedIntRect(ComputeObjectFit())); |
| } |
| // If we are displaying the poster image no pre-rounding is needed, but the |
| // size of the image should be used for fitting instead. |
| return ComputeObjectFit(&cached_image_size_); |
| } |
| |
| bool LayoutVideo::SupportsAcceleratedRendering() const { |
| return !!MediaElement()->PlatformLayer(); |
| } |
| |
| static const LayoutBlock* LayoutObjectPlaceholder( |
| const LayoutObject* layout_object) { |
| LayoutObject* parent = layout_object->Parent(); |
| if (!parent) |
| return nullptr; |
| |
| LayoutFullScreen* full_screen = |
| parent->IsLayoutFullScreen() ? ToLayoutFullScreen(parent) : nullptr; |
| if (!full_screen) |
| return nullptr; |
| |
| return full_screen->Placeholder(); |
| } |
| |
| LayoutUnit LayoutVideo::OffsetLeft(const Element* parent) const { |
| if (const LayoutBlock* block = LayoutObjectPlaceholder(this)) |
| return block->OffsetLeft(parent); |
| return LayoutMedia::OffsetLeft(parent); |
| } |
| |
| LayoutUnit LayoutVideo::OffsetTop(const Element* parent) const { |
| if (const LayoutBlock* block = LayoutObjectPlaceholder(this)) |
| return block->OffsetTop(parent); |
| return LayoutMedia::OffsetTop(parent); |
| } |
| |
| 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(GetNode()); |
| if (element->IsFullscreen() && element->UsesOverlayFullscreenVideo()) |
| return CompositingReason::kVideo; |
| |
| if (ShouldDisplayVideo() && SupportsAcceleratedRendering()) |
| return CompositingReason::kVideo; |
| |
| return CompositingReason::kNone; |
| } |
| |
| } // namespace blink |