image_shader.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_LIB_UI_PAINTING_IMAGE_SHADER_H_
#define FLUTTER_LIB_UI_PAINTING_IMAGE_SHADER_H_
 
#include "flutter/lib/ui/dart_wrapper.h"
#include "flutter/lib/ui/painting/gradient.h"
#include "flutter/lib/ui/painting/image.h"
#include "flutter/lib/ui/painting/matrix.h"
#include "flutter/lib/ui/painting/shader.h"
#include "third_party/skia/include/core/SkMatrix.h"
#include "third_party/skia/include/core/SkShader.h"
#include "third_party/tonic/typed_data/typed_list.h"
 
namespace flutter {
 
class ImageShader : public Shader {
  DEFINE_WRAPPERTYPEINFO();
  FML_FRIEND_MAKE_REF_COUNTED(ImageShader);
 
 public:
  ~ImageShader() override;
  static void Create(Dart_Handle wrapper);
 
  Dart_Handle initWithImage(CanvasImage* image,
                            DlTileMode tmx,
                            DlTileMode tmy,
                            int filter_quality_index,
                            Dart_Handle matrix_handle);
 
  std::shared_ptr<DlColorSource> shader(DlImageSampling) override;
 
  int width();
  int height();
 
  void dispose();
 
 private:
  ImageShader();
 
  sk_sp<const DlImage> image_;
  bool sampling_is_locked_;
 
  std::shared_ptr<DlColorSource> cached_shader_;
};
 
}  // namespace flutter
 
#endif  // FLUTTER_LIB_UI_PAINTING_IMAGE_SHADER_H_