display_list_raster_cache_item.h

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// Copyright 2013 The Flutter 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 FLUTTER_FLOW_LAYERS_DISPLAY_LIST_RASTER_CACHE_ITEM_H_
#define FLUTTER_FLOW_LAYERS_DISPLAY_LIST_RASTER_CACHE_ITEM_H_
 
#include <memory>
#include <optional>
 
#include "flutter/display_list/display_list.h"
#include "flutter/flow/embedded_views.h"
#include "flutter/flow/raster_cache_item.h"
#include "third_party/skia/include/core/SkMatrix.h"
#include "third_party/skia/include/core/SkPoint.h"
 
namespace flutter {
 
class DisplayListRasterCacheItem : public RasterCacheItem {
 public:
  DisplayListRasterCacheItem(const sk_sp<DisplayList>& display_list,
                             const SkPoint& offset,
                             bool is_complex = true,
                             bool will_change = false);
 
  static std::unique_ptr<DisplayListRasterCacheItem> Make(
      const sk_sp<DisplayList>&,
      const SkPoint& offset,
      bool is_complex,
      bool will_change);
 
  void PrerollSetup(PrerollContext* context, const SkMatrix& matrix) override;
 
  void PrerollFinalize(PrerollContext* context,
                       const SkMatrix& matrix) override;
 
  bool Draw(const PaintContext& context, const DlPaint* paint) const override;
 
  bool Draw(const PaintContext& context,
            DlCanvas* canvas,
            const DlPaint* paint) const override;
 
  bool TryToPrepareRasterCache(const PaintContext& context,
                               bool parent_cached = false) const override;
 
  void ModifyMatrix(SkPoint offset) const {
    matrix_ = matrix_.preTranslate(offset.x(), offset.y());
  }
 
  const DisplayList* display_list() const { return display_list_.get(); }
 
 private:
  SkMatrix transformation_matrix_;
  sk_sp<DisplayList> display_list_;
  SkPoint offset_;
  bool is_complex_;
  bool will_change_;
};
 
}  // namespace flutter
 
#endif  // FLUTTER_FLOW_LAYERS_DISPLAY_LIST_RASTER_CACHE_ITEM_H_