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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_DISPLAY_ITEM_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_DRAWING_DISPLAY_ITEM_H_
#include "base/compiler_specific.h"
#include "third_party/blink/renderer/platform/graphics/paint/display_item.h"
#include "third_party/blink/renderer/platform/graphics/paint/paint_record.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"
#include "third_party/skia/include/core/SkRefCnt.h"
namespace blink {
// DrawingDisplayItem contains recorded painting operations which can be
// replayed to produce a rastered output.
//
// This class has two notions of the bounds around the content that was recorded
// and will be produced by the item. The first is the |record_bounds| which
// describes the bounds of all content in the |record| in the space of the
// record. The second is the |visual_rect| which should describe the same thing,
// but takes into account transforms and clips that would apply to the
// PaintRecord, and is in the space of the DisplayItemList. This allows the
// visual_rect to be compared between DrawingDisplayItems, and to give bounds
// around what the user can actually see from the PaintRecord.
class PLATFORM_EXPORT DrawingDisplayItem : public DisplayItem {
public:
DISABLE_CFI_PERF
DrawingDisplayItem(const DisplayItemClient& client,
Type type,
sk_sp<const PaintRecord> record);
const sk_sp<const PaintRecord>& GetPaintRecord() const { return record_; }
bool Equals(const DisplayItem& other) const final;
bool KnownToBeOpaque() const {
if (!RuntimeEnabledFeatures::CompositeAfterPaintEnabled())
return false;
if (!known_to_be_opaque_.has_value())
known_to_be_opaque_.emplace(CalculateKnownToBeOpaque(record_.get()));
return *known_to_be_opaque_;
}
void SetKnownToBeOpaqueForTesting() { known_to_be_opaque_.emplace(true); }
SkColor BackgroundColor() const;
private:
bool CalculateKnownToBeOpaque(const PaintRecord*) const;
sk_sp<const PaintRecord> record_;
mutable base::Optional<bool> known_to_be_opaque_;
};
// TODO(dcheng): Move this ctor back inline once the clang plugin is fixed.
DISABLE_CFI_PERF
inline DrawingDisplayItem::DrawingDisplayItem(const DisplayItemClient& client,
Type type,
sk_sp<const PaintRecord> record)
: DisplayItem(client,
type,
sizeof(*this),
/* draws_content*/ record && record->size()),
record_(DrawsContent() ? std::move(record) : nullptr) {
DCHECK(IsDrawingType(type));
}
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_DRAWING_DISPLAY_ITEM_H_
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