third_party/WebKit/Source/core/paint/TableSectionPainter.h

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef TableSectionPainter_h
#define TableSectionPainter_h

#include "core/paint/PaintPhase.h"
#include "core/style/ShadowData.h"
#include "wtf/Allocator.h"

namespace blink {

class CellSpan;
class CollapsedBorderValue;
class LayoutPoint;
class LayoutTableCell;
class LayoutTableSection;
struct PaintInfo;

class TableSectionPainter {
    STACK_ALLOCATED();
public:
    TableSectionPainter(const LayoutTableSection& layoutTableSection) : m_layoutTableSection(layoutTableSection) { }

    void paint(const PaintInfo&, const LayoutPoint&);
    void paintCollapsedBorders(const PaintInfo&, const LayoutPoint&, const CollapsedBorderValue&);

private:
    void paintObject(const PaintInfo&, const LayoutPoint&);

    void paintBackgroundsBehindCell(const LayoutTableCell&, const PaintInfo&, const LayoutPoint&);
    void paintCell(const LayoutTableCell&, const PaintInfo&, const LayoutPoint&);
    void paintBoxShadow(const PaintInfo&, const LayoutPoint&, ShadowStyle);

    // Returns the primary cell that should be painted for the grid item at (row, column)
    // intersecting dirtiedRows and dirtiedColumns. Returns nullptr if we have painted the grid item
    // when painting the grid item left to or above (row, column) when painting cells intersecting
    // dirtiedRows and dirtiedColumns.
    const LayoutTableCell* primaryCellToPaint(unsigned row, unsigned column, const CellSpan& dirtiedRows, const CellSpan& dirtiedColumns) const;

    enum ItemToPaint {
        PaintCollapsedBorders,
        PaintSection
    };
    void paintRepeatingHeaderGroup(const PaintInfo&, const LayoutPoint& paintOffset, const CollapsedBorderValue& currentBorderValue, ItemToPaint);
    void paintSection(const PaintInfo&, const LayoutPoint&);
    void paintCollapsedSectionBorders(const PaintInfo&, const LayoutPoint&, const CollapsedBorderValue&);

    const LayoutTableSection& m_layoutTableSection;
};

} // namespace blink

#endif // TableSectionPainter_h