314 lines
6.9 KiB
PHP
314 lines
6.9 KiB
PHP
<?php
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/**
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* @brief Image Class - ImageMagick
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* @author <a href='https://www.invisioncommunity.com'>Invision Power Services, Inc.</a>
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* @copyright (c) Invision Power Services, Inc.
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* @license https://www.invisioncommunity.com/legal/standards/
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* @package Invision Community
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* @since 06 Mar 2014
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*/
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namespace IPS\Image;
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/* To prevent PHP errors (extending class does not exist) revealing path */
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if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
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{
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header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
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exit;
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}
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/**
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* Image Class - ImageMagick
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*/
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class _Imagemagick extends \IPS\Image
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{
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/**
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* @brief Temporary filename
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*/
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protected $tempFile = NULL;
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/**
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* @brief Imagick object
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*/
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protected $imagick;
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/**
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* Constructor
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*
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* @param string|NULL $contents Contents
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* @param bool $noImage We are creating a new instance of the object internally and are not passing an image string
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* @return void
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* @throws \InvalidArgumentException
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*/
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public function __construct( $contents, $noImage=FALSE )
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{
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/* If we are just creating an instance of the object without passing image contents as a string, return now */
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if( $noImage === TRUE )
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{
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return;
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}
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$this->tempFile = tempnam( \IPS\TEMP_DIRECTORY, 'imagick' );
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\file_put_contents( $this->tempFile, $contents );
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try
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{
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$this->imagick = new \Imagick( $this->tempFile );
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}
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catch ( \ImagickException $e )
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{
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throw new \InvalidArgumentException( $e->getMessage(), $e->getCode() );
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}
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/* Set quality (if image format is JPEG) */
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if ( in_array( mb_strtolower( $this->imagick->getImageFormat() ), array( 'jpg', 'jpeg' ) ) )
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{
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$this->imagick->setImageCompressionQuality( (int) \IPS\Settings::i()->image_jpg_quality ?: 85 );
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}
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/* Set width/height */
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$this->setDimensions();
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}
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/**
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* Destructor
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*
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* @return void
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*/
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public function __destruct()
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{
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if( $this->tempFile !== NULL )
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{
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unlink( $this->tempFile );
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}
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}
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/**
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* Get Contents
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*
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* @return string
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*/
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public function __toString()
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{
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return (string) $this->imagick->getImagesBlob();
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}
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/**
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* Resize
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*
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* @param int $width Width (in pixels)
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* @param int $height Height (in pixels)
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* @return void
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*/
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public function resize( $width, $height )
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{
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$format = $this->imagick->getImageFormat();
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if( mb_strtolower( $format ) == 'gif' )
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{
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$this->imagick = $this->imagick->coalesceImages();
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foreach( $this->imagick as $frame )
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{
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$frame->thumbnailImage( $width, $height );
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}
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/* Needs ImageMagick 6.2.9 or higher for optimizeImageLayers */
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try
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{
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$this->imagick = $this->imagick->optimizeImageLayers();
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}
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catch( \ImagickException $e )
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{
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$this->imagick = $this->imagick->deconstructImages();
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}
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}
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else
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{
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$this->imagick->thumbnailImage( $width, $height );
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}
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/* Set width/height */
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$this->setDimensions();
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}
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/**
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* Crop to a given width and height (will attempt to downsize first)
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*
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* @param int $width Width (in pixels)
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* @param int $height Height (in pixels)
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* @return void
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*/
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public function crop( $width, $height )
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{
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$this->imagick->cropThumbnailImage( $width, $height );
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/* Set width/height */
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$this->setDimensions();
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}
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/**
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* Crop at specific points
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*
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* @param int $point1X x-point for top-left corner
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* @param int $point1Y y-point for top-left corner
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* @param int $point2X x-point for bottom-right corner
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* @param int $point2Y y-point for bottom-right corner
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* @return void
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*/
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public function cropToPoints( $point1X, $point1Y, $point2X, $point2Y )
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{
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if( mb_strtolower( $this->imagick->getImageFormat() ) === 'gif' )
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{
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$this->imagick = $this->imagick->coalesceImages();
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foreach( $this->imagick as $frame )
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{
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$frame->cropImage( $point2X - $point1X, $point2Y - $point1Y, $point1X, $point1Y );
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$frame->setImagePage($point2X - $point1X, $point2Y - $point1Y, 0, 0);
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}
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/* Needs ImageMagick 6.2.9 or higher for optimizeImageLayers */
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try
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{
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$this->imagick = $this->imagick->optimizeImageLayers();
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}
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catch( \ImagickException $e )
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{
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$this->imagick = $this->imagick->deconstructImages();
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}
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}
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else
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{
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$this->imagick->cropImage( $point2X - $point1X, $point2Y - $point1Y, $point1X, $point1Y );
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}
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/* Set width/height */
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$this->setDimensions();
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}
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/**
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* Impose image
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*
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* @param \IPS\Image $image Image to impose
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* @param int $x Location to impose to, x axis
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* @param int $y Location to impose to, y axis
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* @return void
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*/
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public function impose( $image, $x=0, $y=0 )
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{
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$this->imagick->compositeImage( $image->imagick, \Imagick::COMPOSITE_DEFAULT, $x, $y );
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}
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/**
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* Rotate image
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*
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* @param int $angle Angle of rotation
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* @return void
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*/
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public function rotate( $angle )
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{
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$this->imagick->rotateImage( new \ImagickPixel('#00000000'), $angle );
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/* Set width/height */
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$this->setDimensions();
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}
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/**
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* Set the image width and height
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*
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* @return void
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*/
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protected function setDimensions()
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{
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/* Set width/height */
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$this->width = $this->imagick->getImageWidth();
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$this->height = $this->imagick->getImageHeight();
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}
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/**
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* Get Image Orientation
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*
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* @return int|NULL
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*/
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public function getImageOrientation()
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{
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try
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{
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/* This method does not exist in ImageMagick < 6.6.4 */
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return ( method_exists( $this->imagick, 'getImageOrientation' ) ) ? $this->imagick->getImageOrientation() : NULL;
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}
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catch( \ImagickException $e )
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{
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return NULL;
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}
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}
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/**
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* Set image orientation
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*
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* @param int $orientation The orientation
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* @return void
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*/
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public function setImageOrientation( $orientation )
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{
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if( method_exists( $this->imagick, 'getImageOrientation' ) )
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{
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$this->imagick->setImageOrientation($orientation);
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}
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}
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/**
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* Can we write text reliably on an image?
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*
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* @return bool
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*/
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public static function canWriteText()
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{
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return TRUE;
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}
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/**
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* Create a new blank canvas image
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*
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* @param int $width Width
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* @param int $height Height
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* @param array $rgb Color to use for bg
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* @return \IPS\Image
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*/
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public static function newImageCanvas( $width, $height, $rgb )
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{
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$obj = new static( NULL, TRUE );
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$obj->imagick = new \Imagick();
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$obj->width = $width;
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$obj->height = $height;
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$obj->type = 'png';
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$pixel = new \ImagickPixel( "rgba({$rgb[0]}, {$rgb[1]}, {$rgb[2]}, 1)" );
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$obj->imagick->newImage( $width, $height, $pixel );
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$obj->imagick->setImageFormat( "png" );
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return $obj;
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}
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/**
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* Write text on our image
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*
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* @param string $text Text
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* @param string $font Path to font to use
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* @param int $size Size of text
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* @return void
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*/
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public function write( $text, $font, $size )
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{
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$draw = new \ImagickDraw();
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$draw->setTextAntialias( true );
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$draw->setGravity( \Imagick::GRAVITY_CENTER );
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$draw->setFont( $font );
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$draw->setFontSize( $size );
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$draw->setFillColor( "rgb( 255, 255, 255 )" );
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$this->imagick->annotateImage( $draw, 0, 0, 0, $text );
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}
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} |