garnet/bin/ui/benchmarks/image_grid_cpp/image_grid_view.h

// Copyright 2015 The Fuchsia 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 GARNET_BIN_UI_BENCHMARKS_IMAGE_GRID_CPP_IMAGE_GRID_VIEW_H_
#define GARNET_BIN_UI_BENCHMARKS_IMAGE_GRID_CPP_IMAGE_GRID_VIEW_H_

#include "garnet/lib/ui/scenic/util/rk4_spring_simulation.h"
#include "lib/fxl/logging.h"
#include "lib/fxl/macros.h"
#include "lib/ui/base_view/cpp/base_view.h"

class SkCanvas;

namespace image_grid {

class Frame;
class Rasterizer;

class ImageGridView : public scenic::BaseView {
 public:
  ImageGridView(scenic::ViewContext view_context);

  ~ImageGridView() override;

 private:
  // |scenic::BaseView|
  void OnSceneInvalidated(
      fuchsia::images::PresentationInfo presentation_info) override;

  // |scenic::SessionListener|
  void OnScenicError(std::string error) override {
    FXL_LOG(ERROR) << "Scenic Error " << error;
  }

  void CreateScene();
  void UpdateScene(uint64_t presentation_time);

  bool scene_created_ = false;
  scenic::ShapeNode background_node_;
  scenic::EntityNode cards_parent_node_;
  std::vector<scenic::ShapeNode> cards_;

  uint64_t start_time_ = 0u;
  uint64_t last_update_time_ = 0u;
  float x_offset_ = 0.f;
  float max_scroll_offset_ = 0.f;
  scenic_impl::RK4SpringSimulation spring_;

  FXL_DISALLOW_COPY_AND_ASSIGN(ImageGridView);
};

}  // namespace image_grid

#endif  // GARNET_BIN_UI_BENCHMARKS_IMAGE_GRID_CPP_IMAGE_GRID_VIEW_H_