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/*
* Copyright (C) 2015-2025 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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.
*/
#pragma once
#include <WebCore/ClipRect.h>
namespace WebCore {
class LayerFragment {
public:
class Rects {
public:
Rects() = default;
Rects(const LayoutRect& layerBounds, const LayoutRect& paintDirtyRect, const ClipRect& backgroundRect, const ClipRect& foregroundRect, const std::optional<LayoutRect>& boundingBox = std::nullopt)
: m_layerBounds(layerBounds)
, m_paintDirtyRect(paintDirtyRect)
, m_backgroundRect(backgroundRect)
, m_foregroundRect(foregroundRect)
, m_boundingBox(boundingBox)
{
}
Rects(const Rects& other, const LayoutRect& boundingBox)
: Rects(other.m_layerBounds, other.m_paintDirtyRect, other. m_backgroundRect, other.m_foregroundRect, boundingBox)
{
}
LayoutRect layerBounds() const { return m_layerBounds; }
ClipRect backgroundRect() const { return m_backgroundRect; }
ClipRect dirtyBackgroundRect() const { return intersection(m_paintDirtyRect, m_backgroundRect); }
ClipRect dirtyForegroundRect() const { return intersection(m_paintDirtyRect, m_foregroundRect); }
std::optional<LayoutRect> boundingBox() const { return m_boundingBox; }
void moveBy(const LayoutPoint& offset)
{
m_layerBounds.moveBy(offset);
m_paintDirtyRect.moveBy(offset);
m_backgroundRect.moveBy(offset);
m_foregroundRect.moveBy(offset);
if (m_boundingBox)
m_boundingBox->moveBy(offset);
}
void intersect(const LayoutRect& rect)
{
m_backgroundRect.intersect(rect);
m_foregroundRect.intersect(rect);
if (m_boundingBox)
m_boundingBox->intersect(rect);
}
void intersect(const ClipRect& clipRect)
{
m_backgroundRect.intersect(clipRect);
m_foregroundRect.intersect(clipRect);
}
LayoutRect m_layerBounds;
LayoutRect m_paintDirtyRect;
ClipRect m_backgroundRect;
ClipRect m_foregroundRect;
std::optional<LayoutRect> m_boundingBox;
};
LayerFragment() = default;
LayerFragment(Rects&& rects) { this->rects = WTFMove(rects); }
LayoutRect layerBounds() const { return rects.layerBounds(); }
ClipRect backgroundRect() const { return rects.backgroundRect(); }
ClipRect dirtyBackgroundRect() const { return rects.dirtyBackgroundRect(); }
ClipRect dirtyForegroundRect() const { return rects.dirtyForegroundRect(); }
std::optional<LayoutRect> boundingBox() const { return rects.boundingBox(); }
void moveBy(const LayoutPoint& offset)
{
rects.moveBy(offset);
paginationClip.moveBy(offset);
}
void intersect(const LayoutRect& rect) { rects.intersect(rect); }
void intersect(const ClipRect& clipRect) { rects.intersect(clipRect); }
bool shouldPaintContent = false;
Rects rects;
// Unique to paginated fragments. The physical translation to apply to shift the layer when painting/hit-testing.
LayoutSize paginationOffset;
// Also unique to paginated fragments. An additional clip that applies to the layer. It is in layer-local
// (physical) coordinates.
LayoutRect paginationClip;
};
typedef Vector<LayerFragment, 1> LayerFragments;
} // namespace WebCore
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