File class\libraries\vendor\smottt\wideimage\lib\WideImage\PaletteImage.php

1:	<?php
2:	/**
3:	##DOC-SIGNATURE##
4:
5:	This file is part of WideImage.
6:
7:	WideImage is free software; you can redistribute it and/or modify
8:	it under the terms of the GNU Lesser General Public License as published by
9:	the Free Software Foundation; either version 2.1 of the License, or
10:	(at your option) any later version.
11:
12:	WideImage is distributed in the hope that it will be useful,
13:	but WITHOUT ANY WARRANTY; without even the implied warranty of
14:	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15:	GNU Lesser General Public License for more details.
16:
17:	You should have received a copy of the GNU Lesser General Public License
18:	along with WideImage; if not, write to the Free Software
19:	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20:
21:	* @package WideImage
22:	**/
23:
24:	namespace WideImage;
25:
26:	use WideImage\Exception\InvalidImageDimensionException;
27:	use WideImage\Exception\GDFunctionResultException;
28:
29:	/**
30:	* @package WideImage
31:	*/
32:	class PaletteImage extends Image
33:	{
34:	/**
35:	* Create a palette image
36:	*
37:	* @param int $width
38:	* @param int $height
39:	* @return \WideImage\PaletteImage
40:	*/
41:	public static function create($width, $height)
42:	{
43:	if ($width * $height <= 0 \|\| $width < 0) {
44:	throw new InvalidImageDimensionException("Can't create an image with dimensions [$width, $height].");
45:	}
46:
47:	return new PaletteImage(imagecreate($width, $height));
48:	}
49:
50:	public function doCreate($width, $height)
51:	{
52:	return static::create($width, $height);
53:	}
54:
55:	/**
56:	* (non-PHPdoc)
57:	* @see \WideImage\Image#isTrueColor()
58:	*/
59:	public function isTrueColor()
60:	{
61:	return false;
62:	}
63:
64:	/**
65:	* (non-PHPdoc)
66:	* @see \WideImage\Image#asPalette($nColors, $dither, $matchPalette)
67:	*/
68:	public function asPalette($nColors = 255, $dither = null, $matchPalette = true)
69:	{
70:	return $this->copy();
71:	}
72:
73:	/**
74:	* Returns a copy of the image
75:	*
76:	* @param $trueColor True if the new image should be truecolor
77:	* @return \WideImage\Image
78:	*/
79:	protected function copyAsNew($trueColor = false)
80:	{
81:	$width = $this->getWidth();
82:	$height = $this->getHeight();
83:
84:	if ($trueColor) {
85:	$new = TrueColorImage::create($width, $height);
86:	} else {
87:	$new = PaletteImage::create($width, $height);
88:	}
89:
90:	// copy transparency of source to target
91:	if ($this->isTransparent()) {
92:	$rgb = $this->getTransparentColorRGB();
93:
94:	if (is_array($rgb)) {
95:	$tci = $new->allocateColor($rgb['red'], $rgb['green'], $rgb['blue']);
96:	$new->fill(0, 0, $tci);
97:	$new->setTransparentColor($tci);
98:	}
99:	}
100:
101:	imageCopy($new->getHandle(), $this->handle, 0, 0, 0, 0, $width, $height);
102:
103:	return $new;
104:	}
105:
106:	/**
107:	* (non-PHPdoc)
108:	* @see \WideImage\Image#asTrueColor()
109:	*/
110:	public function asTrueColor()
111:	{
112:	$width = $this->getWidth();
113:	$height = $this->getHeight();
114:	$new = WideImage::createTrueColorImage($width, $height);
115:
116:	if ($this->isTransparent()) {
117:	$new->copyTransparencyFrom($this);
118:	}
119:
120:	if (!imageCopy($new->getHandle(), $this->handle, 0, 0, 0, 0, $width, $height)) {
121:	throw new GDFunctionResultException("imagecopy() returned false");
122:	}
123:
124:	return $new;
125:	}
126:
127:	/**
128:	* (non-PHPdoc)
129:	* @see \WideImage\Image#getChannels()
130:	*/
131:	public function getChannels()
132:	{
133:	$args = func_get_args();
134:
135:	if (count($args) == 1 && is_array($args[0])) {
136:	$args = $args[0];
137:	}
138:
139:	return OperationFactory::get('CopyChannelsPalette')->execute($this, $args);
140:	}
141:
142:	/**
143:	* (non-PHPdoc)
144:	* @see \WideImage\Image#copyNoAlpha()
145:	*/
146:	public function copyNoAlpha()
147:	{
148:	return WideImage::loadFromString($this->asString('png'));
149:	}
150:	}
151:

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