dl_linear_gradient_color_source.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_DISPLAY_LIST_EFFECTS_COLOR_SOURCES_DL_LINEAR_GRADIENT_COLOR_SOURCE_H_
#define FLUTTER_DISPLAY_LIST_EFFECTS_COLOR_SOURCES_DL_LINEAR_GRADIENT_COLOR_SOURCE_H_
 
#include "flutter/display_list/effects/color_sources/dl_gradient_color_source_base.h"
 
namespace flutter {
 
class DlLinearGradientColorSource final : public DlGradientColorSourceBase {
 public:
  const DlLinearGradientColorSource* asLinearGradient() const override {
    return this;
  }
 
  bool isUIThreadSafe() const override { return true; }
 
  DlColorSourceType type() const override {
    return DlColorSourceType::kLinearGradient;
  }
  size_t size() const override { return sizeof(*this) + vector_sizes(); }
 
  std::shared_ptr<DlColorSource> shared() const override;
 
  const DlPoint& start_point() const { return start_point_; }
  const DlPoint& end_point() const { return end_point_; }
 
 protected:
  virtual const void* pod() const override { return this + 1; }
 
  bool equals_(DlColorSource const& other) const override;
 
 private:
  template <typename Colors>
  DlLinearGradientColorSource(const DlPoint start_point,
                              const DlPoint end_point,
                              uint32_t stop_count,
                              Colors colors,
                              const float* stops,
                              DlTileMode tile_mode,
                              const DlMatrix* matrix = nullptr)
      : DlGradientColorSourceBase(stop_count, tile_mode, matrix),
        start_point_(start_point),
        end_point_(end_point) {
    store_color_stops(this + 1, colors, stops);
  }
 
  explicit DlLinearGradientColorSource(
      const DlLinearGradientColorSource* source);
 
  DlPoint start_point_;
  DlPoint end_point_;
 
  friend class DlColorSource;
  friend class DisplayListBuilder;
 
  FML_DISALLOW_COPY_ASSIGN_AND_MOVE(DlLinearGradientColorSource);
};
 
}  // namespace flutter
 
#endif  // FLUTTER_DISPLAY_LIST_EFFECTS_COLOR_SOURCES_DL_LINEAR_GRADIENT_COLOR_SOURCE_H_