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// Copyright 2017 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 THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_NG_NG_BOX_FRAGMENT_PAINTER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_NG_NG_BOX_FRAGMENT_PAINTER_H_
#include "third_party/blink/renderer/core/layout/api/hit_test_action.h"
#include "third_party/blink/renderer/core/layout/background_bleed_avoidance.h"
#include "third_party/blink/renderer/core/layout/ng/geometry/ng_border_edges.h"
#include "third_party/blink/renderer/core/layout/ng/ng_physical_box_fragment.h"
#include "third_party/blink/renderer/core/paint/box_painter_base.h"
#include "third_party/blink/renderer/core/paint/ng/ng_paint_fragment.h"
#include "third_party/blink/renderer/platform/geometry/layout_point.h"
#include "third_party/blink/renderer/platform/geometry/layout_size.h"
#include "third_party/blink/renderer/platform/wtf/allocator.h"
namespace blink {
class FillLayer;
class HitTestLocation;
class HitTestRequest;
class HitTestResult;
class LayoutRect;
class NGPhysicalFragment;
class ScopedPaintState;
struct PaintInfo;
// Painter for LayoutNG box fragments, paints borders and background. Delegates
// to NGTextFragmentPainter to paint line box fragments.
class NGBoxFragmentPainter : public BoxPainterBase {
STACK_ALLOCATED();
public:
NGBoxFragmentPainter(const NGPaintFragment&);
void Paint(const PaintInfo&);
void PaintObject(const PaintInfo&,
const LayoutPoint&,
bool suppress_box_decoration_background = false);
// Hit tests this box fragment.
// @param physical_offset Physical offset of this box fragment in paint layer.
// TODO(eae): Change to take a HitTestResult pointer instead as it mutates.
bool NodeAtPoint(HitTestResult&,
const HitTestLocation& location_in_container,
const LayoutPoint& physical_offset,
HitTestAction);
protected:
LayoutRectOutsets ComputeBorders() const override;
LayoutRectOutsets ComputePadding() const override;
BoxPainterBase::FillLayerInfo GetFillLayerInfo(
const Color&,
const FillLayer&,
BackgroundBleedAvoidance) const override;
void PaintTextClipMask(GraphicsContext&,
const IntRect& mask_rect,
const LayoutPoint& paint_offset,
bool object_has_multiple_boxes) override;
LayoutRect AdjustRectForScrolledContent(const PaintInfo&,
const BoxPainterBase::FillLayerInfo&,
const LayoutRect&) override;
private:
bool IsPaintingScrollingBackground(const NGPaintFragment&, const PaintInfo&);
bool ShouldPaint(const ScopedPaintState&) const;
void PaintBoxDecorationBackground(const PaintInfo&,
const LayoutPoint& paint_offset);
void PaintBoxDecorationBackgroundWithRect(const PaintInfo&,
const LayoutRect&);
bool BackgroundIsKnownToBeOpaque(const PaintInfo&);
void PaintAllPhasesAtomically(const PaintInfo&,
bool is_self_painting);
void PaintBlockChildren(const PaintInfo&);
void PaintLineBoxChildren(NGPaintFragment::ChildList,
const PaintInfo&,
const LayoutPoint& paint_offset);
void PaintInlineChildren(NGPaintFragment::ChildList,
const PaintInfo&,
const LayoutPoint& paint_offset);
void PaintInlineChildrenOutlines(NGPaintFragment::ChildList,
const PaintInfo&,
const LayoutPoint& paint_offset);
void PaintInlineChildBoxUsingLegacyFallback(const NGPhysicalFragment&,
const PaintInfo&);
void PaintBlockFlowContents(const PaintInfo&,
const LayoutPoint& paint_offset);
void PaintInlineChild(const NGPaintFragment&,
const PaintInfo&,
const LayoutPoint& paint_offset);
void PaintAtomicInlineChild(const NGPaintFragment&, const PaintInfo&);
void PaintTextChild(const NGPaintFragment&,
const PaintInfo&,
const LayoutPoint& paint_offset);
void PaintFloatingChildren(NGPaintFragment::ChildList, const PaintInfo&);
void PaintFloats(const PaintInfo&);
void PaintMask(const PaintInfo&, const LayoutPoint& paint_offset);
void PaintOverflowControlsIfNeeded(const PaintInfo&,
const LayoutPoint& paint_offset);
void PaintAtomicInline(const PaintInfo&);
void PaintBackground(const PaintInfo&,
const LayoutRect&,
const Color& background_color,
BackgroundBleedAvoidance = kBackgroundBleedNone);
void PaintSymbol(const NGPaintFragment&,
const PaintInfo&,
const LayoutPoint& paint_offset);
void PaintCarets(const PaintInfo&, const LayoutPoint& paint_offset);
void RecordHitTestData(const PaintInfo& paint_info,
const LayoutPoint& paint_offset);
bool IsInSelfHitTestingPhase(HitTestAction) const;
bool VisibleToHitTestRequest(const HitTestRequest&) const;
// Hit tests the children of a container fragment, which is either
// |box_fragment_|, or one of its child line box fragments.
// @param physical_offset Physical offset of the container fragment's content
// box in paint layer. Note that this includes scrolling offset when the
// container has 'overflow: scroll'.
bool HitTestChildren(HitTestResult&,
NGPaintFragment::ChildList,
const HitTestLocation& location_in_container,
const LayoutPoint& physical_offset,
HitTestAction);
// Hit tests a box fragment, which is a child of either |box_fragment_|, or
// one of its child line box fragments.
// @param physical_offset Physical offset of the given box fragment in the
// paint layer.
bool HitTestChildBoxFragment(HitTestResult&,
const NGPaintFragment&,
const HitTestLocation& location_in_container,
const LayoutPoint& physical_offset,
HitTestAction);
// Hit tests the given text fragment.
// @param physical_offset Physical offset of the text fragment in paint layer.
bool HitTestTextFragment(HitTestResult&,
const NGPaintFragment&,
const HitTestLocation& location_in_container,
const LayoutPoint& physical_offset,
HitTestAction);
// Hit tests the given line box fragment.
// @param physical_offset Physical offset of the line box fragment in paint
// layer.
bool HitTestLineBoxFragment(HitTestResult&,
const NGPaintFragment&,
const HitTestLocation& location_in_container,
const LayoutPoint& physical_offset,
HitTestAction);
// Returns whether the hit test location is completely outside the border box,
// which possibly has rounded corners.
bool HitTestClippedOutByBorder(const HitTestLocation&,
const LayoutPoint& border_box_location) const;
LayoutPoint FlipForWritingModeForChild(
const NGPhysicalFragment& child_fragment,
const LayoutPoint& offset);
const NGPhysicalBoxFragment& PhysicalFragment() const;
const NGPaintFragment& box_fragment_;
NGBorderEdges border_edges_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_NG_NG_BOX_FRAGMENT_PAINTER_H_
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