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// Copyright 2014 The Chromium Authors
// 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_BOX_PAINTER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_BOX_PAINTER_H_
#include "third_party/blink/renderer/core/layout/layout_box.h"
#include "third_party/blink/renderer/core/paint/rounded_inner_rect_clipper.h"
#include "third_party/blink/renderer/platform/graphics/paint/drawing_recorder.h"
#include "third_party/blink/renderer/platform/graphics/paint/region_capture_data.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace blink {
class BoxPainter {
STACK_ALLOCATED();
public:
BoxPainter(const LayoutBox& layout_box) : layout_box_(layout_box) {}
// Records the bounds of the current paint chunk for potential cropping later
// as part of tab capture.
void RecordRegionCaptureData(const PaintInfo& paint_info,
const PhysicalRect& paint_rect,
const DisplayItemClient& background_client);
// This should be called in the background paint phase even if there is no
// other painted content.
void RecordScrollHitTestData(const PaintInfo& paint_info,
const DisplayItemClient& background_client,
const FragmentData*);
// Calculates the visual rect (see DisplayItem::VisualRect() for definition)
// from the self visual overflow of the LayoutBox and |paint_offset|.
// This visual rect contains all possible painted results of the LayoutBox.
// In a particular painter, we can also use a tighter visual rect instead of
// this visual rect, if it's easy and beneficial to do so.
// In most cases we use BoxDrawingRecorder which calls this function, instead
// of directly using this function.
gfx::Rect VisualRect(const PhysicalOffset& paint_offset);
private:
const LayoutBox& layout_box_;
};
// A wrapper of DrawingRecorder for LayoutBox, providing the default visual
// rect. See BoxPainter::VisualRect().
class BoxDrawingRecorder : public DrawingRecorder {
public:
BoxDrawingRecorder(GraphicsContext& context,
const LayoutBox& box,
DisplayItem::Type type,
const PhysicalOffset& paint_offset)
: DrawingRecorder(context,
box,
type,
BoxPainter(box).VisualRect(paint_offset)) {}
BoxDrawingRecorder(GraphicsContext& context,
const LayoutBox& box,
PaintPhase phase,
const PhysicalOffset& paint_offset)
: BoxDrawingRecorder(context,
box,
DisplayItem::PaintPhaseToDrawingType(phase),
paint_offset) {}
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_BOX_PAINTER_H_
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