chromium/third_party/blink/renderer/platform/graphics/paint/paint_artifact.h

// Copyright 2015 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_PLATFORM_GRAPHICS_PAINT_PAINT_ARTIFACT_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_PAINT_ARTIFACT_H_

#include "base/check_op.h"
#include "third_party/blink/renderer/platform/graphics/paint/display_item_list.h"
#include "third_party/blink/renderer/platform/graphics/paint/paint_chunk.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/platform_export.h"

namespace blink {

// A PaintArtifact represents the output of painting, consisting of paint chunks
// and display items (in DisplayItemList).
//
// A PaintArtifact not only represents the output of the current painting, but
// also serves as cache of individual display items and paint chunks for later
// paintings as long as the display items and paint chunks are valid.
//
// It represents a particular state of the world, and is immutable (const) and
// promises to be in a reasonable state (e.g. chunk bounding boxes computed) to
// all users, except for PaintController and unit tests.
class PLATFORM_EXPORT PaintArtifact final
    : public GarbageCollected<PaintArtifact> { … };

PLATFORM_EXPORT std::ostream& operator<<(std::ostream&, const PaintArtifact&);

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_PAINT_ARTIFACT_H_