RenderedPosition.h [plain text]
#pragma once
#include "CaretRectComputation.h"
#include "LayoutIntegrationLineIterator.h"
#include "LayoutIntegrationRunIterator.h"
#include "TextAffinity.h"
namespace WebCore {
class LayoutUnit;
class Position;
class RenderObject;
class VisiblePosition;
class RenderedPosition {
public:
RenderedPosition();
explicit RenderedPosition(const VisiblePosition&);
explicit RenderedPosition(const Position&, Affinity);
bool isEquivalent(const RenderedPosition&) const;
bool isNull() const { return !m_renderer; }
LayoutIntegration::LineIterator line() const { return m_run ? m_run.line() : LayoutIntegration::LineIterator(); }
unsigned char bidiLevelOnLeft() const;
unsigned char bidiLevelOnRight() const;
RenderedPosition leftBoundaryOfBidiRun(unsigned char bidiLevelOfRun);
RenderedPosition rightBoundaryOfBidiRun(unsigned char bidiLevelOfRun);
enum ShouldMatchBidiLevel { MatchBidiLevel, IgnoreBidiLevel };
bool atLeftBoundaryOfBidiRun() const { return atLeftBoundaryOfBidiRun(IgnoreBidiLevel, 0); }
bool atRightBoundaryOfBidiRun() const { return atRightBoundaryOfBidiRun(IgnoreBidiLevel, 0); }
bool atLeftBoundaryOfBidiRun(unsigned char bidiLevelOfRun) const { return atLeftBoundaryOfBidiRun(MatchBidiLevel, bidiLevelOfRun); }
bool atRightBoundaryOfBidiRun(unsigned char bidiLevelOfRun) const { return atRightBoundaryOfBidiRun(MatchBidiLevel, bidiLevelOfRun); }
Position positionAtLeftBoundaryOfBiDiRun() const;
Position positionAtRightBoundaryOfBiDiRun() const;
IntRect absoluteRect(CaretRectMode = CaretRectMode::Normal) const;
private:
bool operator==(const RenderedPosition&) const { return false; }
explicit RenderedPosition(const RenderObject*, LayoutIntegration::RunIterator, unsigned offset);
LayoutIntegration::RunIterator previousLeafOnLine() const;
LayoutIntegration::RunIterator nextLeafOnLine() const;
bool atLeftmostOffsetInBox() const { return m_run && m_offset == m_run->leftmostCaretOffset(); }
bool atRightmostOffsetInBox() const { return m_run && m_offset == m_run->rightmostCaretOffset(); }
bool atLeftBoundaryOfBidiRun(ShouldMatchBidiLevel, unsigned char bidiLevelOfRun) const;
bool atRightBoundaryOfBidiRun(ShouldMatchBidiLevel, unsigned char bidiLevelOfRun) const;
const RenderObject* m_renderer { nullptr };
LayoutIntegration::RunIterator m_run;
unsigned m_offset { 0 };
mutable Optional<LayoutIntegration::RunIterator> m_previousLeafOnLine;
mutable Optional<LayoutIntegration::RunIterator> m_nextLeafOnLine;
};
bool renderObjectContainsPosition(const RenderObject*, const Position&);
}