| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * 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. |
| */ |
| package com.google.android.exoplayer2.util; |
| |
| import android.graphics.Color; |
| import android.text.TextUtils; |
| import androidx.annotation.ColorInt; |
| import com.google.common.base.Ascii; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * Parser for color expressions found in styling formats, e.g. TTML and CSS. |
| * |
| * @see <a href="https://w3c.github.io/webvtt/#styling">WebVTT CSS Styling</a> |
| * @see <a href="https://www.w3.org/TR/ttml2/">Timed Text Markup Language 2 (TTML2) - 10.3.5</a> |
| */ |
| public final class ColorParser { |
| |
| private static final String RGB = "rgb"; |
| private static final String RGBA = "rgba"; |
| |
| private static final Pattern RGB_PATTERN = |
| Pattern.compile("^rgb\\((\\d{1,3}),(\\d{1,3}),(\\d{1,3})\\)$"); |
| |
| private static final Pattern RGBA_PATTERN_INT_ALPHA = |
| Pattern.compile("^rgba\\((\\d{1,3}),(\\d{1,3}),(\\d{1,3}),(\\d{1,3})\\)$"); |
| |
| private static final Pattern RGBA_PATTERN_FLOAT_ALPHA = |
| Pattern.compile("^rgba\\((\\d{1,3}),(\\d{1,3}),(\\d{1,3}),(\\d*\\.?\\d*?)\\)$"); |
| |
| private static final Map<String, Integer> COLOR_MAP; |
| |
| /** |
| * Parses a TTML color expression. |
| * |
| * @param colorExpression The color expression. |
| * @return The parsed ARGB color. |
| */ |
| @ColorInt |
| public static int parseTtmlColor(String colorExpression) { |
| return parseColorInternal(colorExpression, false); |
| } |
| |
| /** |
| * Parses a CSS color expression. |
| * |
| * @param colorExpression The color expression. |
| * @return The parsed ARGB color. |
| */ |
| @ColorInt |
| public static int parseCssColor(String colorExpression) { |
| return parseColorInternal(colorExpression, true); |
| } |
| |
| @ColorInt |
| private static int parseColorInternal(String colorExpression, boolean alphaHasFloatFormat) { |
| Assertions.checkArgument(!TextUtils.isEmpty(colorExpression)); |
| colorExpression = colorExpression.replace(" ", ""); |
| if (colorExpression.charAt(0) == '#') { |
| // Parse using Long to avoid failure when colorExpression is greater than #7FFFFFFF. |
| int color = (int) Long.parseLong(colorExpression.substring(1), 16); |
| if (colorExpression.length() == 7) { |
| // Set the alpha value |
| color |= 0xFF000000; |
| } else if (colorExpression.length() == 9) { |
| // We have #RRGGBBAA, but we need #AARRGGBB |
| color = ((color & 0xFF) << 24) | (color >>> 8); |
| } else { |
| throw new IllegalArgumentException(); |
| } |
| return color; |
| } else if (colorExpression.startsWith(RGBA)) { |
| Matcher matcher = |
| (alphaHasFloatFormat ? RGBA_PATTERN_FLOAT_ALPHA : RGBA_PATTERN_INT_ALPHA) |
| .matcher(colorExpression); |
| if (matcher.matches()) { |
| return Color.argb( |
| alphaHasFloatFormat |
| ? (int) (255 * Float.parseFloat(Assertions.checkNotNull(matcher.group(4)))) |
| : Integer.parseInt(Assertions.checkNotNull(matcher.group(4)), 10), |
| Integer.parseInt(Assertions.checkNotNull(matcher.group(1)), 10), |
| Integer.parseInt(Assertions.checkNotNull(matcher.group(2)), 10), |
| Integer.parseInt(Assertions.checkNotNull(matcher.group(3)), 10)); |
| } |
| } else if (colorExpression.startsWith(RGB)) { |
| Matcher matcher = RGB_PATTERN.matcher(colorExpression); |
| if (matcher.matches()) { |
| return Color.rgb( |
| Integer.parseInt(Assertions.checkNotNull(matcher.group(1)), 10), |
| Integer.parseInt(Assertions.checkNotNull(matcher.group(2)), 10), |
| Integer.parseInt(Assertions.checkNotNull(matcher.group(3)), 10)); |
| } |
| } else { |
| // we use our own color map |
| Integer color = COLOR_MAP.get(Ascii.toLowerCase(colorExpression)); |
| if (color != null) { |
| return color; |
| } |
| } |
| throw new IllegalArgumentException(); |
| } |
| |
| static { |
| COLOR_MAP = new HashMap<>(); |
| COLOR_MAP.put("aliceblue", 0xFFF0F8FF); |
| COLOR_MAP.put("antiquewhite", 0xFFFAEBD7); |
| COLOR_MAP.put("aqua", 0xFF00FFFF); |
| COLOR_MAP.put("aquamarine", 0xFF7FFFD4); |
| COLOR_MAP.put("azure", 0xFFF0FFFF); |
| COLOR_MAP.put("beige", 0xFFF5F5DC); |
| COLOR_MAP.put("bisque", 0xFFFFE4C4); |
| COLOR_MAP.put("black", 0xFF000000); |
| COLOR_MAP.put("blanchedalmond", 0xFFFFEBCD); |
| COLOR_MAP.put("blue", 0xFF0000FF); |
| COLOR_MAP.put("blueviolet", 0xFF8A2BE2); |
| COLOR_MAP.put("brown", 0xFFA52A2A); |
| COLOR_MAP.put("burlywood", 0xFFDEB887); |
| COLOR_MAP.put("cadetblue", 0xFF5F9EA0); |
| COLOR_MAP.put("chartreuse", 0xFF7FFF00); |
| COLOR_MAP.put("chocolate", 0xFFD2691E); |
| COLOR_MAP.put("coral", 0xFFFF7F50); |
| COLOR_MAP.put("cornflowerblue", 0xFF6495ED); |
| COLOR_MAP.put("cornsilk", 0xFFFFF8DC); |
| COLOR_MAP.put("crimson", 0xFFDC143C); |
| COLOR_MAP.put("cyan", 0xFF00FFFF); |
| COLOR_MAP.put("darkblue", 0xFF00008B); |
| COLOR_MAP.put("darkcyan", 0xFF008B8B); |
| COLOR_MAP.put("darkgoldenrod", 0xFFB8860B); |
| COLOR_MAP.put("darkgray", 0xFFA9A9A9); |
| COLOR_MAP.put("darkgreen", 0xFF006400); |
| COLOR_MAP.put("darkgrey", 0xFFA9A9A9); |
| COLOR_MAP.put("darkkhaki", 0xFFBDB76B); |
| COLOR_MAP.put("darkmagenta", 0xFF8B008B); |
| COLOR_MAP.put("darkolivegreen", 0xFF556B2F); |
| COLOR_MAP.put("darkorange", 0xFFFF8C00); |
| COLOR_MAP.put("darkorchid", 0xFF9932CC); |
| COLOR_MAP.put("darkred", 0xFF8B0000); |
| COLOR_MAP.put("darksalmon", 0xFFE9967A); |
| COLOR_MAP.put("darkseagreen", 0xFF8FBC8F); |
| COLOR_MAP.put("darkslateblue", 0xFF483D8B); |
| COLOR_MAP.put("darkslategray", 0xFF2F4F4F); |
| COLOR_MAP.put("darkslategrey", 0xFF2F4F4F); |
| COLOR_MAP.put("darkturquoise", 0xFF00CED1); |
| COLOR_MAP.put("darkviolet", 0xFF9400D3); |
| COLOR_MAP.put("deeppink", 0xFFFF1493); |
| COLOR_MAP.put("deepskyblue", 0xFF00BFFF); |
| COLOR_MAP.put("dimgray", 0xFF696969); |
| COLOR_MAP.put("dimgrey", 0xFF696969); |
| COLOR_MAP.put("dodgerblue", 0xFF1E90FF); |
| COLOR_MAP.put("firebrick", 0xFFB22222); |
| COLOR_MAP.put("floralwhite", 0xFFFFFAF0); |
| COLOR_MAP.put("forestgreen", 0xFF228B22); |
| COLOR_MAP.put("fuchsia", 0xFFFF00FF); |
| COLOR_MAP.put("gainsboro", 0xFFDCDCDC); |
| COLOR_MAP.put("ghostwhite", 0xFFF8F8FF); |
| COLOR_MAP.put("gold", 0xFFFFD700); |
| COLOR_MAP.put("goldenrod", 0xFFDAA520); |
| COLOR_MAP.put("gray", 0xFF808080); |
| COLOR_MAP.put("green", 0xFF008000); |
| COLOR_MAP.put("greenyellow", 0xFFADFF2F); |
| COLOR_MAP.put("grey", 0xFF808080); |
| COLOR_MAP.put("honeydew", 0xFFF0FFF0); |
| COLOR_MAP.put("hotpink", 0xFFFF69B4); |
| COLOR_MAP.put("indianred", 0xFFCD5C5C); |
| COLOR_MAP.put("indigo", 0xFF4B0082); |
| COLOR_MAP.put("ivory", 0xFFFFFFF0); |
| COLOR_MAP.put("khaki", 0xFFF0E68C); |
| COLOR_MAP.put("lavender", 0xFFE6E6FA); |
| COLOR_MAP.put("lavenderblush", 0xFFFFF0F5); |
| COLOR_MAP.put("lawngreen", 0xFF7CFC00); |
| COLOR_MAP.put("lemonchiffon", 0xFFFFFACD); |
| COLOR_MAP.put("lightblue", 0xFFADD8E6); |
| COLOR_MAP.put("lightcoral", 0xFFF08080); |
| COLOR_MAP.put("lightcyan", 0xFFE0FFFF); |
| COLOR_MAP.put("lightgoldenrodyellow", 0xFFFAFAD2); |
| COLOR_MAP.put("lightgray", 0xFFD3D3D3); |
| COLOR_MAP.put("lightgreen", 0xFF90EE90); |
| COLOR_MAP.put("lightgrey", 0xFFD3D3D3); |
| COLOR_MAP.put("lightpink", 0xFFFFB6C1); |
| COLOR_MAP.put("lightsalmon", 0xFFFFA07A); |
| COLOR_MAP.put("lightseagreen", 0xFF20B2AA); |
| COLOR_MAP.put("lightskyblue", 0xFF87CEFA); |
| COLOR_MAP.put("lightslategray", 0xFF778899); |
| COLOR_MAP.put("lightslategrey", 0xFF778899); |
| COLOR_MAP.put("lightsteelblue", 0xFFB0C4DE); |
| COLOR_MAP.put("lightyellow", 0xFFFFFFE0); |
| COLOR_MAP.put("lime", 0xFF00FF00); |
| COLOR_MAP.put("limegreen", 0xFF32CD32); |
| COLOR_MAP.put("linen", 0xFFFAF0E6); |
| COLOR_MAP.put("magenta", 0xFFFF00FF); |
| COLOR_MAP.put("maroon", 0xFF800000); |
| COLOR_MAP.put("mediumaquamarine", 0xFF66CDAA); |
| COLOR_MAP.put("mediumblue", 0xFF0000CD); |
| COLOR_MAP.put("mediumorchid", 0xFFBA55D3); |
| COLOR_MAP.put("mediumpurple", 0xFF9370DB); |
| COLOR_MAP.put("mediumseagreen", 0xFF3CB371); |
| COLOR_MAP.put("mediumslateblue", 0xFF7B68EE); |
| COLOR_MAP.put("mediumspringgreen", 0xFF00FA9A); |
| COLOR_MAP.put("mediumturquoise", 0xFF48D1CC); |
| COLOR_MAP.put("mediumvioletred", 0xFFC71585); |
| COLOR_MAP.put("midnightblue", 0xFF191970); |
| COLOR_MAP.put("mintcream", 0xFFF5FFFA); |
| COLOR_MAP.put("mistyrose", 0xFFFFE4E1); |
| COLOR_MAP.put("moccasin", 0xFFFFE4B5); |
| COLOR_MAP.put("navajowhite", 0xFFFFDEAD); |
| COLOR_MAP.put("navy", 0xFF000080); |
| COLOR_MAP.put("oldlace", 0xFFFDF5E6); |
| COLOR_MAP.put("olive", 0xFF808000); |
| COLOR_MAP.put("olivedrab", 0xFF6B8E23); |
| COLOR_MAP.put("orange", 0xFFFFA500); |
| COLOR_MAP.put("orangered", 0xFFFF4500); |
| COLOR_MAP.put("orchid", 0xFFDA70D6); |
| COLOR_MAP.put("palegoldenrod", 0xFFEEE8AA); |
| COLOR_MAP.put("palegreen", 0xFF98FB98); |
| COLOR_MAP.put("paleturquoise", 0xFFAFEEEE); |
| COLOR_MAP.put("palevioletred", 0xFFDB7093); |
| COLOR_MAP.put("papayawhip", 0xFFFFEFD5); |
| COLOR_MAP.put("peachpuff", 0xFFFFDAB9); |
| COLOR_MAP.put("peru", 0xFFCD853F); |
| COLOR_MAP.put("pink", 0xFFFFC0CB); |
| COLOR_MAP.put("plum", 0xFFDDA0DD); |
| COLOR_MAP.put("powderblue", 0xFFB0E0E6); |
| COLOR_MAP.put("purple", 0xFF800080); |
| COLOR_MAP.put("rebeccapurple", 0xFF663399); |
| COLOR_MAP.put("red", 0xFFFF0000); |
| COLOR_MAP.put("rosybrown", 0xFFBC8F8F); |
| COLOR_MAP.put("royalblue", 0xFF4169E1); |
| COLOR_MAP.put("saddlebrown", 0xFF8B4513); |
| COLOR_MAP.put("salmon", 0xFFFA8072); |
| COLOR_MAP.put("sandybrown", 0xFFF4A460); |
| COLOR_MAP.put("seagreen", 0xFF2E8B57); |
| COLOR_MAP.put("seashell", 0xFFFFF5EE); |
| COLOR_MAP.put("sienna", 0xFFA0522D); |
| COLOR_MAP.put("silver", 0xFFC0C0C0); |
| COLOR_MAP.put("skyblue", 0xFF87CEEB); |
| COLOR_MAP.put("slateblue", 0xFF6A5ACD); |
| COLOR_MAP.put("slategray", 0xFF708090); |
| COLOR_MAP.put("slategrey", 0xFF708090); |
| COLOR_MAP.put("snow", 0xFFFFFAFA); |
| COLOR_MAP.put("springgreen", 0xFF00FF7F); |
| COLOR_MAP.put("steelblue", 0xFF4682B4); |
| COLOR_MAP.put("tan", 0xFFD2B48C); |
| COLOR_MAP.put("teal", 0xFF008080); |
| COLOR_MAP.put("thistle", 0xFFD8BFD8); |
| COLOR_MAP.put("tomato", 0xFFFF6347); |
| COLOR_MAP.put("transparent", 0x00000000); |
| COLOR_MAP.put("turquoise", 0xFF40E0D0); |
| COLOR_MAP.put("violet", 0xFFEE82EE); |
| COLOR_MAP.put("wheat", 0xFFF5DEB3); |
| COLOR_MAP.put("white", 0xFFFFFFFF); |
| COLOR_MAP.put("whitesmoke", 0xFFF5F5F5); |
| COLOR_MAP.put("yellow", 0xFFFFFF00); |
| COLOR_MAP.put("yellowgreen", 0xFF9ACD32); |
| } |
| |
| private ColorParser() { |
| // Prevent instantiation. |
| } |
| } |