90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
/*
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* Copyright (C) 2020 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. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(LAYOUT_FORMATTING_CONTEXT)
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#include "FloatRect.h"
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#include "LayoutRect.h"
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#include "RenderStyleConstants.h"
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namespace WebCore {
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class FillLayer;
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class RenderStyle;
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class StyleImage;
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namespace Layout {
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class Box;
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class BoxGeometry;
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}
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namespace Display {
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class Box;
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// Pixel-snapped image geometry for a single fill layer (used for backgrounds and masks).
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class FillLayerImageGeometry {
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public:
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FillLayerImageGeometry(const FloatRect& destinationRect, const FloatSize& tileSize, const FloatSize& phase, const FloatSize& space, FillAttachment attachment)
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: m_destRect(destinationRect)
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, m_destOrigin(m_destRect.location())
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, m_tileSize(tileSize)
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, m_phase(phase)
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, m_space(space)
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, m_hasNonLocalGeometry(attachment == FillAttachment::FixedBackground)
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{
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}
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FloatRect destRect() const { return m_destRect; }
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FloatSize phase() const { return m_phase; }
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FloatSize tileSize() const { return m_tileSize; }
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FloatSize spaceSize() const { return m_space; }
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bool hasNonLocalGeometry() const { return m_hasNonLocalGeometry; }
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FloatSize relativePhase() const
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{
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FloatSize phase = m_phase;
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phase += m_destRect.location() - m_destOrigin;
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return phase;
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}
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void clip(const FloatRect& clipRect) { m_destRect.intersect(clipRect); }
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private:
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FloatRect m_destRect;
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FloatPoint m_destOrigin;
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FloatSize m_tileSize;
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FloatSize m_phase;
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FloatSize m_space;
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bool m_hasNonLocalGeometry { false }; // Has background-attachment: fixed. Implies that we can't always cheaply compute destRect.
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};
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Vector<FillLayerImageGeometry, 1> calculateFillLayerImageGeometry(const RenderStyle&, const Layout::BoxGeometry&, LayoutSize offsetFromRoot, float pixelSnappingFactor);
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} // namespace Display
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} // namespace WebCore
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#endif // ENABLE(LAYOUT_FORMATTING_CONTEXT)
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