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// 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_DRAWING_RECORDER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_DRAWING_RECORDER_H_
#include "third_party/blink/renderer/platform/platform_export.h"
#include "base/auto_reset.h"
#include "base/macros.h"
#include "third_party/blink/renderer/platform/geometry/float_rect.h"
#include "third_party/blink/renderer/platform/geometry/layout_rect.h"
#include "third_party/blink/renderer/platform/graphics/graphics_context.h"
#include "third_party/blink/renderer/platform/graphics/paint/drawing_display_item.h"
#include "third_party/blink/renderer/platform/graphics/paint/paint_controller.h"
#include "third_party/blink/renderer/platform/wtf/allocator.h"
namespace blink {
class GraphicsContext;
class PLATFORM_EXPORT DrawingRecorder final {
DISALLOW_NEW();
public:
static bool UseCachedDrawingIfPossible(GraphicsContext& context,
const DisplayItemClient& client,
DisplayItem::Type type) {
return context.GetPaintController().UseCachedItemIfPossible(client, type);
}
static bool UseCachedDrawingIfPossible(GraphicsContext& context,
const DisplayItemClient& client,
PaintPhase phase) {
return UseCachedDrawingIfPossible(
context, client, DisplayItem::PaintPhaseToDrawingType(phase));
}
DrawingRecorder(GraphicsContext&,
const DisplayItemClient&,
DisplayItem::Type);
DrawingRecorder(GraphicsContext& context,
const DisplayItemClient& client,
PaintPhase phase)
: DrawingRecorder(context,
client,
DisplayItem::PaintPhaseToDrawingType(phase)) {}
~DrawingRecorder();
void SetKnownToBeOpaque() {
DCHECK(RuntimeEnabledFeatures::SlimmingPaintV2Enabled());
known_to_be_opaque_ = true;
}
private:
GraphicsContext& context_;
const DisplayItemClient& client_;
const DisplayItem::Type type_;
// True if there are no transparent areas. Only used for SlimmingPaintV2.
bool known_to_be_opaque_;
#if DCHECK_IS_ON()
// Ensures the list size does not change during the recorder's scope.
size_t initial_display_item_list_size_;
#endif
DISALLOW_COPY_AND_ASSIGN(DrawingRecorder);
};
#if DCHECK_IS_ON()
class DisableListModificationCheck {
STACK_ALLOCATED();
public:
DisableListModificationCheck();
private:
base::AutoReset<bool> disabler_;
DISALLOW_COPY_AND_ASSIGN(DisableListModificationCheck);
};
#endif // DCHECK_IS_ON()
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_DRAWING_RECORDER_H_
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