lib/ui/painting/image_shader.cc

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "flutter/lib/ui/painting/image_shader.h"

#include "lib/tonic/dart_args.h"
#include "lib/tonic/dart_binding_macros.h"
#include "lib/tonic/converter/dart_converter.h"
#include "lib/tonic/dart_library_natives.h"

namespace blink {

static void ImageShader_constructor(Dart_NativeArguments args) {
  DartCallConstructor(&ImageShader::Create, args);
}

IMPLEMENT_WRAPPERTYPEINFO(ui, ImageShader);

#define FOR_EACH_BINDING(V) V(ImageShader, initWithImage)

FOR_EACH_BINDING(DART_NATIVE_CALLBACK)

void ImageShader::RegisterNatives(tonic::DartLibraryNatives* natives) {
  natives->Register(
      {{"ImageShader_constructor", ImageShader_constructor, 1, true},
       FOR_EACH_BINDING(DART_REGISTER_NATIVE)});
}

ftl::RefPtr<ImageShader> ImageShader::Create() {
  return ftl::MakeRefCounted<ImageShader>();
}

void ImageShader::initWithImage(CanvasImage* image,
                                SkShader::TileMode tmx,
                                SkShader::TileMode tmy,
                                const tonic::Float64List& matrix4) {
  FTL_DCHECK(image != NULL);
  SkMatrix sk_matrix = ToSkMatrix(matrix4);
  SkBitmap bitmap;
  image->image()->asLegacyBitmap(&bitmap, SkImage::kRO_LegacyBitmapMode);

  set_shader(SkShader::MakeBitmapShader(bitmap, tmx, tmy, &sk_matrix));
}

ImageShader::ImageShader() : Shader(nullptr) {}

ImageShader::~ImageShader() {}

}  // namespace blink