128 lines
3.5 KiB
PHP
128 lines
3.5 KiB
PHP
<?php
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/**
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* @author Gasper Kozak
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* @copyright 2007-2011
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**/
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class WideImage_PaletteImage extends WideImage_Image
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{
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/**
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* Create a palette image.
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*
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* @param int $width
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* @param int $height
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*
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* @return WideImage_PaletteImage
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*/
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public static function create($width, $height)
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{
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if ($width * $height <= 0 || $width < 0) {
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throw new WideImage_InvalidImageDimensionException("Can't create an image with dimensions [$width, $height].");
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}
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return new self(imagecreate($width, $height));
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}
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public function doCreate($width, $height)
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{
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return self::create($width, $height);
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}
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/**
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* (non-PHPdoc).
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*
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* @see WideImage_Image#isTrueColor()
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*/
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public function isTrueColor()
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{
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return false;
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}
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/**
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* (non-PHPdoc).
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*
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* @see WideImage_Image#asPalette($nColors, $dither, $matchPalette)
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*/
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public function asPalette($nColors = 255, $dither = null, $matchPalette = true)
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{
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return $this->copy();
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}
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/**
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* Returns a copy of the image.
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*
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* @param $trueColor True if the new image should be truecolor
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*
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* @return WideImage_Image
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*/
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protected function copyAsNew($trueColor = false)
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{
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$width = $this->getWidth();
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$height = $this->getHeight();
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if ($trueColor) {
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$new = WideImage_TrueColorImage::create($width, $height);
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} else {
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$new = self::create($width, $height);
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}
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// copy transparency of source to target
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if ($this->isTransparent()) {
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$rgb = $this->getTransparentColorRGB();
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if (is_array($rgb)) {
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$tci = $new->allocateColor($rgb['red'], $rgb['green'], $rgb['blue']);
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$new->fill(0, 0, $tci);
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$new->setTransparentColor($tci);
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}
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}
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imagecopy($new->getHandle(), $this->handle, 0, 0, 0, 0, $width, $height);
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return $new;
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}
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/**
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* (non-PHPdoc).
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*
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* @see WideImage_Image#asTrueColor()
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*/
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public function asTrueColor()
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{
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$width = $this->getWidth();
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$height = $this->getHeight();
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$new = WideImage::createTrueColorImage($width, $height);
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if ($this->isTransparent()) {
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$new->copyTransparencyFrom($this);
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}
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if (!imagecopy($new->getHandle(), $this->handle, 0, 0, 0, 0, $width, $height)) {
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throw new WideImage_GDFunctionResultException('imagecopy() returned false');
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}
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return $new;
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}
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/**
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* (non-PHPdoc).
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*
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* @see WideImage_Image#getChannels()
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*/
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public function getChannels()
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{
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$args = func_get_args();
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if (count($args) == 1 && is_array($args[0])) {
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$args = $args[0];
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}
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return WideImage_OperationFactory::get('CopyChannelsPalette')->execute($this, $args);
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}
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/**
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* (non-PHPdoc).
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*
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* @see WideImage_Image#copyNoAlpha()
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*/
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public function copyNoAlpha()
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{
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return WideImage_Image::loadFromString($this->asString('png'));
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}
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}
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