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88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "sky/engine/core/painting/CanvasGradient.h"
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#include "sky/engine/tonic/dart_args.h"
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#include "sky/engine/tonic/dart_binding_macros.h"
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#include "sky/engine/tonic/dart_converter.h"
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#include "sky/engine/tonic/dart_library_natives.h"
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namespace blink {
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typedef CanvasGradient Gradient; // Because the C++ name doesn't match the Dart name.
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static void Gradient_constructor(Dart_NativeArguments args) {
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DartCallConstructor(&CanvasGradient::create, args);
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}
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IMPLEMENT_WRAPPERTYPEINFO(ui, Gradient);
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#define FOR_EACH_BINDING(V) \
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V(Gradient, initLinear) \
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V(Gradient, initRadial)
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FOR_EACH_BINDING(DART_NATIVE_CALLBACK)
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void CanvasGradient::RegisterNatives(DartLibraryNatives* natives) {
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natives->Register({
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{ "Gradient_constructor", Gradient_constructor, 1, true },
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FOR_EACH_BINDING(DART_REGISTER_NATIVE)
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});
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}
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PassRefPtr<CanvasGradient> CanvasGradient::create() {
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return adoptRef(new CanvasGradient());
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}
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void CanvasGradient::initLinear(const std::vector<Point>& end_points,
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const std::vector<CanvasColor>& colors,
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const std::vector<float>& color_stops,
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SkShader::TileMode tile_mode) {
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ASSERT(end_points.size() == 2);
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ASSERT(colors.size() == color_stops.size() || color_stops.data() == nullptr);
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SkPoint sk_end_points[2];
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for (int i = 0; i < 2; ++i)
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sk_end_points[i] = end_points[i].sk_point;
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std::vector<SkColor> sk_colors;
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sk_colors.reserve(colors.size());
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for (const CanvasColor& color : colors)
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sk_colors.push_back(color);
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SkShader* shader = SkGradientShader::CreateLinear(
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sk_end_points, sk_colors.data(), color_stops.data(), sk_colors.size(),
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tile_mode);
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set_shader(adoptRef(shader));
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}
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void CanvasGradient::initRadial(const Point& center,
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double radius,
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const std::vector<CanvasColor>& colors,
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const std::vector<float>& color_stops,
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SkShader::TileMode tile_mode) {
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ASSERT(colors.size() == color_stops.size() || color_stops.data() == nullptr);
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std::vector<SkColor> sk_colors;
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sk_colors.reserve(colors.size());
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for (const CanvasColor& color : colors)
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sk_colors.push_back(color);
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SkShader* shader = SkGradientShader::CreateRadial(
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center.sk_point, radius, sk_colors.data(), color_stops.data(),
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sk_colors.size(), tile_mode);
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set_shader(adoptRef(shader));
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}
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CanvasGradient::CanvasGradient()
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: Shader(nullptr)
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{
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}
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CanvasGradient::~CanvasGradient()
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{
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}
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} // namespace blink
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