diff options
Diffstat (limited to 'chromium/third_party/catapult/third_party/polymer2/bower_components/web-animations-js/src/color-handler.js')
-rw-r--r-- | chromium/third_party/catapult/third_party/polymer2/bower_components/web-animations-js/src/color-handler.js | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/chromium/third_party/catapult/third_party/polymer2/bower_components/web-animations-js/src/color-handler.js b/chromium/third_party/catapult/third_party/polymer2/bower_components/web-animations-js/src/color-handler.js new file mode 100644 index 00000000000..3a05bff07fa --- /dev/null +++ b/chromium/third_party/catapult/third_party/polymer2/bower_components/web-animations-js/src/color-handler.js @@ -0,0 +1,63 @@ +// Copyright 2014 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. + +(function(scope, testing) { + + var canvas = document.createElementNS('http://www.w3.org/1999/xhtml', 'canvas'); + canvas.width = canvas.height = 1; + var context = canvas.getContext('2d'); + + function parseColor(string) { + string = string.trim(); + // The context ignores invalid colors + context.fillStyle = '#000'; + context.fillStyle = string; + var contextSerializedFillStyle = context.fillStyle; + context.fillStyle = '#fff'; + context.fillStyle = string; + if (contextSerializedFillStyle != context.fillStyle) + return; + context.fillRect(0, 0, 1, 1); + var pixelColor = context.getImageData(0, 0, 1, 1).data; + context.clearRect(0, 0, 1, 1); + var alpha = pixelColor[3] / 255; + return [pixelColor[0] * alpha, pixelColor[1] * alpha, pixelColor[2] * alpha, alpha]; + } + + function mergeColors(left, right) { + return [left, right, function(x) { + function clamp(v) { + return Math.max(0, Math.min(255, v)); + } + if (x[3]) { + for (var i = 0; i < 3; i++) + x[i] = Math.round(clamp(x[i] / x[3])); + } + x[3] = scope.numberToString(scope.clamp(0, 1, x[3])); + return 'rgba(' + x.join(',') + ')'; + }]; + } + + scope.addPropertiesHandler(parseColor, mergeColors, + ['background-color', 'border-bottom-color', 'border-left-color', 'border-right-color', + 'border-top-color', 'color', 'fill', 'flood-color', 'lighting-color', + 'outline-color', 'stop-color', 'stroke', 'text-decoration-color']); + scope.consumeColor = scope.consumeParenthesised.bind(null, parseColor); + scope.mergeColors = mergeColors; + + if (WEB_ANIMATIONS_TESTING) { + testing.parseColor = parseColor; + } + +})(webAnimations1, webAnimationsTesting); |