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/*
* Copyright (C) 2009 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE 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 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LINE_LINE_BOX_LIST_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LINE_LINE_BOX_LIST_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/layout/api/hit_test_action.h"
#include "third_party/blink/renderer/platform/wtf/allocator.h"
#include "third_party/blink/renderer/platform/wtf/assertions.h"
namespace blink {
class CullRect;
class HitTestLocation;
class HitTestResult;
class InlineFlowBox;
class InlineTextBox;
class LayoutPoint;
class LayoutUnit;
class LineLayoutBoxModel;
class LineLayoutItem;
template <typename InlineBoxType>
class CORE_TEMPLATE_CLASS_EXPORT InlineBoxList {
DISALLOW_NEW();
public:
InlineBoxList() : first_(nullptr), last_(nullptr) {}
#if DCHECK_IS_ON()
~InlineBoxList();
#endif
InlineBoxType* First() const { return first_; }
InlineBoxType* Last() const { return last_; }
void AppendLineBox(InlineBoxType*);
void DeleteLineBoxes();
void ExtractLineBox(InlineBoxType*);
void AttachLineBox(InlineBoxType*);
void RemoveLineBox(InlineBoxType*);
class BaseIterator {
STACK_ALLOCATED();
public:
explicit BaseIterator(InlineBoxType* first) : current_(first) {}
InlineBoxType* operator*() const {
DCHECK(current_);
return current_;
}
InlineBoxType* operator->() const { return operator*(); }
bool operator==(const BaseIterator& other) const {
return current_ == other.current_;
}
bool operator!=(const BaseIterator& other) const {
return !operator==(other);
}
protected:
InlineBoxType* current_;
};
class Iterator final : public BaseIterator {
public:
using BaseIterator::BaseIterator;
using BaseIterator::current_;
void operator++() {
DCHECK(current_);
current_ = current_->NextForSameLayoutObject();
}
};
class ReverseIterator final : public BaseIterator {
public:
using BaseIterator::BaseIterator;
using BaseIterator::current_;
void operator++() {
DCHECK(current_);
current_ = current_->PrevForSameLayoutObject();
}
};
Iterator begin() const { return Iterator(first_); }
Iterator end() const { return Iterator(nullptr); }
class ReverseRange final {
STACK_ALLOCATED();
public:
explicit ReverseRange(InlineBoxType* last) : last_(last){};
ReverseIterator begin() const { return ReverseIterator(last_); }
ReverseIterator end() const { return ReverseIterator(nullptr); }
private:
InlineBoxType* last_;
};
ReverseRange InReverseOrder() const { return ReverseRange(last_); }
protected:
// For block flows, each box represents the root inline box for a line in the
// paragraph.
// For inline flows, each box represents a portion of that inline.
InlineBoxType* first_;
InlineBoxType* last_;
};
extern template class CORE_EXTERN_TEMPLATE_EXPORT InlineBoxList<InlineFlowBox>;
extern template class CORE_EXTERN_TEMPLATE_EXPORT InlineBoxList<InlineTextBox>;
class LineBoxList : public InlineBoxList<InlineFlowBox> {
public:
void DeleteLineBoxTree();
void DirtyLineBoxes();
void DirtyLinesFromChangedChild(LineLayoutItem parent,
LineLayoutItem child,
bool can_dirty_ancestors);
bool HitTest(LineLayoutBoxModel,
HitTestResult&,
const HitTestLocation& location_in_container,
const LayoutPoint& accumulated_offset,
HitTestAction) const;
bool AnyLineIntersectsRect(LineLayoutBoxModel,
const CullRect&,
const LayoutPoint&) const;
bool LineIntersectsDirtyRect(LineLayoutBoxModel,
InlineFlowBox*,
const CullRect&,
const LayoutPoint&) const;
private:
bool RangeIntersectsRect(LineLayoutBoxModel,
LayoutUnit logical_top,
LayoutUnit logical_bottom,
const CullRect&,
const LayoutPoint&) const;
};
class InlineTextBoxList : public InlineBoxList<InlineTextBox> {};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LINE_LINE_BOX_LIST_H_
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