chromium/cc/paint/display_item_list.h

// 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 CC_PAINT_DISPLAY_ITEM_LIST_H_
#define CC_PAINT_DISPLAY_ITEM_LIST_H_

#include <cstddef>
#include <memory>
#include <optional>
#include <string>
#include <utility>
#include <vector>

#include "base/memory/ref_counted.h"
#include "cc/base/rtree.h"
#include "cc/paint/directly_composited_image_info.h"
#include "cc/paint/discardable_image_map.h"
#include "cc/paint/image_id.h"
#include "cc/paint/paint_export.h"
#include "cc/paint/paint_op.h"
#include "cc/paint/paint_op_buffer.h"
#include "ui/gfx/color_space.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/rect_conversions.h"
#include "ui/gfx/geometry/rect_f.h"

class SkCanvas;

namespace base::trace_event {
class TracedValue;
}  // namespace base::trace_event

namespace cc {

// DisplayItemList is a container of paint operations. One can populate the list
// using StartPaint, followed by push{,_with_data,_with_array} functions
// specialized with ops coming from paint_op_buffer.h. Internally, the
// DisplayItemList contains a PaintOpBuffer and defers op saving to it.
// Additionally, it store some meta information about the paint operations.
// Specifically, it creates an rtree to assist in rasterization: when
// rasterizing a rect, it queries the rtree to extract only the byte offsets of
// the ops required and replays those into a canvas.
class CC_PAINT_EXPORT DisplayItemList
    : public base::RefCountedThreadSafe<DisplayItemList> { … };

}  // namespace cc

#endif  // CC_PAINT_DISPLAY_ITEM_LIST_H_