| <?php |
| /** |
| * File containing the ezcDocumentPcssStyleColorValue class. |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 Document |
| * @version //autogen// |
| * @copyright Copyright (C) 2005-2010 eZ Systems AS. All rights reserved. |
| * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0 |
| * @access private |
| */ |
| |
| /** |
| * Style directive color value representation. |
| * |
| * @package Document |
| * @access private |
| * @version //autogen// |
| */ |
| class ezcDocumentPcssStyleColorValue extends ezcDocumentPcssStyleValue |
| { |
| /** |
| * Sub regular expression for short hexadecimal color notation. |
| * |
| * @var string |
| */ |
| protected $shortHexNotation = '(?:#?([0-9a-f])([0-9a-f])([0-9a-f])([0-9a-f])?)'; |
| |
| /** |
| * Sub regular expression for long hexadecimal color notation. |
| * |
| * @var string |
| */ |
| protected $longHexNotation = '(?:#?([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})?)'; |
| |
| /** |
| * Sub regular expression for rgb() color notation. |
| * |
| * @var string |
| */ |
| protected $rgbSpec = '(?:\s*rgb\s*\(\s*([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\s*\)\s*)'; |
| |
| /** |
| * Sub regular expression for rgba() color notation. |
| * |
| * @var string |
| */ |
| protected $rgbaSpec = '(?:\s*rgba\s*\(\s*([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\s*\)\s*)'; |
| |
| /** |
| * Parse value string representation |
| * |
| * Parse the string representation of the value into a usable |
| * representation. |
| * |
| * @param string $value |
| */ |
| public function parse( $value ) |
| { |
| switch ( true ) |
| { |
| // Sepcial values |
| case ( trim( $value ) === 'transparent' ) || |
| ( trim( $value ) === 'none' ): |
| $this->value = array( |
| 'red' => 0., |
| 'green' => 0., |
| 'blue' => 0., |
| 'alpha' => 1., |
| ); |
| break; |
| |
| // Match 12 and 16bit hex value color definitions |
| case preg_match( '(^' . $this->shortHexNotation . '$)USi', $value, $match ): |
| $this->value = array( |
| 'red' => hexdec( $match[1] ) / 15, |
| 'green' => hexdec( $match[2] ) / 15, |
| 'blue' => hexdec( $match[3] ) / 15, |
| 'alpha' => isset( $match[4] ) ? hexdec( $match[4] ) / 15 : 0., |
| ); |
| break; |
| |
| // Match 24 and 32bit hex value color definitions |
| case preg_match( '(^' . $this->longHexNotation . '$)Ui', $value, $match ): |
| $this->value = array( |
| 'red' => hexdec( $match[1] ) / 255, |
| 'green' => hexdec( $match[2] ) / 255, |
| 'blue' => hexdec( $match[3] ) / 255, |
| 'alpha' => isset( $match[4] ) ? hexdec( $match[4] ) / 255 : 0., |
| ); |
| break; |
| |
| // Match RGB array specification |
| case preg_match( '(^' . $this->rgbSpec . '$)Si', $value, $match ): |
| $this->value = array( |
| 'red' => $match[1] % 256 / 255, |
| 'green' => $match[2] % 256 / 255, |
| 'blue' => $match[3] % 256 / 255, |
| 'alpha' => 0, |
| ); |
| break; |
| |
| // Match RGBA array specification |
| case preg_match( '(^' . $this->rgbaSpec . '$)Si', $value, $match ): |
| $this->value = array( |
| 'red' => $match[1] % 256 / 255, |
| 'green' => $match[2] % 256 / 255, |
| 'blue' => $match[3] % 256 / 255, |
| 'alpha' => $match[4] % 256 / 255, |
| ); |
| break; |
| |
| default: |
| throw new ezcDocumentParserException( E_PARSE, "Invalid color specification: " . $value ); |
| } |
| |
| return $this; |
| } |
| |
| /** |
| * Get regular expression matching the value. |
| * |
| * Return a regular sub expression, which matches all possible values of |
| * this value type. The regular expression should NOT contain any named |
| * sub-patterns, since it might be repeatedly embedded in some box parser. |
| * |
| * @return string |
| */ |
| public function getRegularExpression() |
| { |
| return '(?i:transparent|none|' . |
| $this->shortHexNotation . '|' . |
| $this->longHexNotation . '|' . |
| $this->rgbSpec . '|' . |
| $this->rgbaSpec . ')'; |
| } |
| |
| /** |
| * Convert value to string. |
| * |
| * @return string |
| */ |
| public function __toString() |
| { |
| return sprintf( '#%02x%02x%02x%s', |
| $this->value['red'] * 255, |
| $this->value['green'] * 255, |
| $this->value['blue'] * 255, |
| $this->value['alpha'] > 0 ? sprintf( '%02x', $this->value['alpha'] * 255 ) : '' |
| ); |
| } |
| } |
| |
| ?> |