117 lines
4.0 KiB
C++
117 lines
4.0 KiB
C++
/*
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* Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "RenderHTMLCanvas.h"
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#include "CanvasRenderingContext.h"
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#include "Document.h"
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#include "Frame.h"
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#include "FrameView.h"
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#include "GraphicsContext.h"
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#include "HTMLCanvasElement.h"
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#include "HTMLNames.h"
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#include "ImageQualityController.h"
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#include "Page.h"
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#include "PaintInfo.h"
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#include "RenderView.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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using namespace HTMLNames;
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WTF_MAKE_ISO_ALLOCATED_IMPL(RenderHTMLCanvas);
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RenderHTMLCanvas::RenderHTMLCanvas(HTMLCanvasElement& element, RenderStyle&& style)
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: RenderReplaced(element, WTFMove(style), element.size())
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{
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}
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HTMLCanvasElement& RenderHTMLCanvas::canvasElement() const
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{
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return downcast<HTMLCanvasElement>(nodeForNonAnonymous());
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}
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bool RenderHTMLCanvas::requiresLayer() const
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{
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if (RenderReplaced::requiresLayer())
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return true;
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if (CanvasRenderingContext* context = canvasElement().renderingContext())
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return context->isAccelerated();
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return false;
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}
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void RenderHTMLCanvas::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
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{
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GraphicsContext& context = paintInfo.context();
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LayoutRect contentBoxRect = this->contentBoxRect();
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if (context.detectingContentfulPaint()) {
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if (!context.contenfulPaintDetected() && canvasElement().renderingContext())
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context.setContentfulPaintDetected();
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return;
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}
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contentBoxRect.moveBy(paintOffset);
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LayoutRect replacedContentRect = this->replacedContentRect();
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replacedContentRect.moveBy(paintOffset);
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// Not allowed to overflow the content box.
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bool clip = !contentBoxRect.contains(replacedContentRect);
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GraphicsContextStateSaver stateSaver(paintInfo.context(), clip);
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if (clip)
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paintInfo.context().clip(snappedIntRect(contentBoxRect));
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if (paintInfo.phase == PaintPhase::Foreground)
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page().addRelevantRepaintedObject(this, intersection(replacedContentRect, contentBoxRect));
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InterpolationQualityMaintainer interpolationMaintainer(context, ImageQualityController::interpolationQualityFromStyle(style()));
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canvasElement().setIsSnapshotting(paintInfo.paintBehavior.contains(PaintBehavior::Snapshotting));
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canvasElement().paint(context, replacedContentRect);
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canvasElement().setIsSnapshotting(false);
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}
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void RenderHTMLCanvas::canvasSizeChanged()
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{
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IntSize canvasSize = canvasElement().size();
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LayoutSize zoomedSize(canvasSize.width() * style().effectiveZoom(), canvasSize.height() * style().effectiveZoom());
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if (zoomedSize == intrinsicSize())
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return;
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setIntrinsicSize(zoomedSize);
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if (!parent())
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return;
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setNeedsLayoutIfNeededAfterIntrinsicSizeChange();
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}
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} // namespace WebCore
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