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608d1fb590
Summary: `fabric/graphics` provides graphics primitives; the implementation should be platform-specific eventually. Reviewed By: fkgozali Differential Revision: D7230675 fbshipit-source-id: ff05d2673072fad5ee6f331f0155561969e1a8b6
52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include "graphicValuesConversions.h"
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namespace facebook {
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namespace react {
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SharedColor colorFromDynamic(folly::dynamic value) {
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float red;
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float green;
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float blue;
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float alpha;
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if (value.isNumber()) {
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auto argb = value.asInt();
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float ratio = 256;
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alpha = ((argb >> 24) & 0xFF) / ratio;
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red = ((argb >> 16) & 0xFF) / ratio;
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green = ((argb >> 8) & 0xFF) / ratio;
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blue = (argb & 0xFF) / ratio;
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} else if (value.isArray()) {
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auto size = value.size();
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assert(size == 3 || size == 4);
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red = value[0].asDouble();
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green = value[1].asDouble();
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blue = value[2].asDouble();
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alpha = size == 4 ? value[3].asDouble() : 1.0;
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} else {
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abort();
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}
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return colorFromComponents(red, green, blue, alpha);
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}
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std::string colorNameFromColor(SharedColor value) {
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ColorComponents components = colorComponentsFromColor(value);
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const float ratio = 256;
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return "rgba(" +
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folly::to<std::string>(round(components.red * ratio)) + ", " +
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folly::to<std::string>(round(components.green * ratio)) + ", " +
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folly::to<std::string>(round(components.blue * ratio)) + ", " +
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folly::to<std::string>(round(components.alpha * ratio)) + ")";
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}
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} // namespace react
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} // namespace facebook
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