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/*
* Copyright 2016 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef COBALT_RENDERER_RASTERIZER_SKIA_CONVERSIONS_H_
#define COBALT_RENDERER_RASTERIZER_SKIA_CONVERSIONS_H_
#include <vector>
#include "third_party/skia/include/core/SkColor.h"
namespace cobalt {
namespace renderer {
namespace rasterizer {
namespace skia {
inline SkColor ToSkColor(const render_tree::ColorRGBA& color) {
return SkColorSetARGB(color.rgb8_a(), color.rgb8_r(), color.rgb8_g(),
color.rgb8_b());
}
// Helper struct to convert render_tree::ColorStopList to a format that Skia
// methods will easily accept.
struct SkiaColorStops {
explicit SkiaColorStops(const render_tree::ColorStopList& color_stops)
: colors(color_stops.size()),
positions(color_stops.size()),
has_alpha(false) {
for (size_t i = 0; i < color_stops.size(); ++i) {
if (color_stops[i].color.a() < 1.0f) {
has_alpha = true;
}
colors[i] = ToSkColor(color_stops[i].color);
positions[i] = color_stops[i].position;
}
}
std::size_t size() const {
DCHECK(colors.size() == positions.size());
return colors.size();
}
std::vector<SkColor> colors;
std::vector<SkScalar> positions;
bool has_alpha;
};
} // namespace skia
} // namespace rasterizer
} // namespace renderer
} // namespace cobalt
#endif // COBALT_RENDERER_RASTERIZER_SKIA_CONVERSIONS_H_