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/*
* Copyright (C) 2004, 2006, 2007 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/LayoutHTMLCanvas.h"
#include "core/frame/FrameView.h"
#include "core/frame/LocalFrame.h"
#include "core/html/HTMLCanvasElement.h"
#include "core/layout/LayoutView.h"
#include "core/page/Page.h"
#include "core/paint/HTMLCanvasPaintInvalidator.h"
#include "core/paint/HTMLCanvasPainter.h"
namespace blink {
using namespace HTMLNames;
LayoutHTMLCanvas::LayoutHTMLCanvas(HTMLCanvasElement* element)
: LayoutReplaced(element, LayoutSize(element->size())) {
view()->frameView()->setIsVisuallyNonEmpty();
}
PaintLayerType LayoutHTMLCanvas::layerTypeRequired() const {
return NormalPaintLayer;
}
void LayoutHTMLCanvas::paintReplaced(const PaintInfo& paintInfo,
const LayoutPoint& paintOffset) const {
HTMLCanvasPainter(*this).paintReplaced(paintInfo, paintOffset);
}
void LayoutHTMLCanvas::canvasSizeChanged() {
IntSize canvasSize = toHTMLCanvasElement(node())->size();
LayoutSize zoomedSize(canvasSize.width() * style()->effectiveZoom(),
canvasSize.height() * style()->effectiveZoom());
if (zoomedSize == intrinsicSize())
return;
setIntrinsicSize(zoomedSize);
if (!parent())
return;
if (!preferredLogicalWidthsDirty())
setPreferredLogicalWidthsDirty();
LayoutSize oldSize = size();
updateLogicalWidth();
updateLogicalHeight();
if (oldSize == size() && !hasOverrideLogicalContentWidth() &&
!hasOverrideLogicalContentHeight()) {
// If we have an override size, then we're probably a flex item, and the
// check above is insufficient because updateLogical{Width,Height} just
// used the override size. We actually have to mark ourselves as needing
// layout so the flex algorithm can run and compute our size correctly.
return;
}
if (!selfNeedsLayout())
setNeedsLayout(LayoutInvalidationReason::SizeChanged);
}
PaintInvalidationReason LayoutHTMLCanvas::invalidatePaintIfNeeded(
const PaintInvalidatorContext& context) const {
return HTMLCanvasPaintInvalidator(*this, context).invalidatePaintIfNeeded();
}
CompositingReasons LayoutHTMLCanvas::additionalCompositingReasons() const {
if (toHTMLCanvasElement(node())->shouldBeDirectComposited())
return CompositingReasonCanvas;
return CompositingReasonNone;
}
void LayoutHTMLCanvas::styleDidChange(StyleDifference diff,
const ComputedStyle* oldStyle) {
LayoutReplaced::styleDidChange(diff, oldStyle);
toHTMLCanvasElement(node())->styleDidChange(oldStyle, styleRef());
}
} // namespace blink
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