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/*
* Copyright (C) 2023 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 "InlineIteratorTextBox.h"
#include "LayoutRect.h"
#include "RegionContext.h"
#include <wtf/TZoneMalloc.h>
namespace WebCore {
class RenderBox;
class RenderBoxModelObject;
class RenderText;
class RenderView;
class AccessibilityRegionContext final : public RegionContext {
WTF_MAKE_TZONE_ALLOCATED(AccessibilityRegionContext);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(AccessibilityRegionContext);
public:
AccessibilityRegionContext() = default;
virtual ~AccessibilityRegionContext();
bool isAccessibilityRegionContext() const final { return true; }
// This group of methods takes paint-time geometry and uses it directly.
void takeBounds(const RenderBox&, LayoutPoint /* paintOffset */);
void takeBounds(const RenderBox&, FloatRect /* paintRect */);
void takeBounds(const RenderInline* renderInline, LayoutRect&& paintRect)
{
if (renderInline)
takeBounds(*renderInline, WTFMove(paintRect));
};
void takeBounds(const RenderInline&, LayoutRect&& /* paintRect */);
void takeBounds(const RenderText&, FloatRect /* paintRect */);
void takeBounds(const RenderView&, LayoutPoint&& /* paintOffset */);
// This group of methods serves only as a notification that the given object is
// being painted. From there, we construct the geometry we need ourselves
// (cheaply, i.e. by combining already-computed geometry how we need it).
void onPaint(const ScrollView&);
private:
void takeBoundsInternal(const RenderBoxModelObject&, IntRect&& /* paintRect */);
// Maps the given rect using the current transform and clip stack.
// Assumes `rect` is in page-absolute coordinate space (because the clips being applied are).
template<typename RectT>
FloatRect mapRect(RectT&& rect)
{
bool hasTransform = m_transformStack.size();
bool hasClip = m_clipStack.size();
if (!hasTransform && !hasClip)
return rect;
FloatRect mappedRect = rect;
if (hasTransform)
mappedRect = m_transformStack.last().mapRect(mappedRect);
if (hasClip)
mappedRect.intersect(m_clipStack.last());
return mappedRect;
}
SingleThreadWeakHashMap<RenderText, FloatRect> m_accumulatedRenderTextRects;
}; // class AccessibilityRegionContext
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::AccessibilityRegionContext)
static bool isType(const WebCore::RegionContext& regionContext) { return regionContext.isAccessibilityRegionContext(); }
SPECIALIZE_TYPE_TRAITS_END()
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