lib.image.thumb.class.php

/ php-ppcms/includes/classes/lib.image.thumb.class.php

http://php-ppcms.googlecode.com/
PHP | 331 lines | 289 code | 22 blank | 20 comment | 90 complexity | fcf6ec69c45311b41aa1b3f0ec880745 MD5 | raw file
Possible License(s): LGPL-2.1, GPL-2.0

<?php

/***************************************************************

*  Copyright notice

*  (c) 2009, jianyuzhu@gmail.com

*  All rights reserved

*  This script is part of the PPEMI project.

***************************************************************/



class LibImageThumb {

	var $srcfile = '';

	var $targetfile = '';

	var $imagecreatefromfunc = '';

	var $imagefunc = '';

	var $attach = array();

	var $attachinfo = '';

	var $animatedgif = 0;

	

	var $imagelib = 'gd2';

	var $imageimpath = '';

	

	var $defaulttargetfile = 'image_tmp.jpg';

	

	var $thumbstatus = '2';//from 0, 1 2

	

	var $watermarktext = '';

	var $watermarktype = '';

	var $watermarktrans = '';

	var $watermarkquality = '';

	var $watermarkminwidth = 0;

	var $watermarkminheight = 0;

	var $watermarkstatus = '1';//from 1 to 9

	//		xx	xx	xx

	//		xx	xx	xx

	//		xx	xx	xx

	//

	

	//constructor

	function LibImageThumb($srcfile, $targetfile, $attach = array()) {

		$this->defaulttargetfile = CONFIG_PATH . CONFIG_DIR_IMAGES . $this->defaulttargetfile;

		

		$this->srcfile = $srcfile;

		$this->targetfile = $targetfile;

		$this->attach = $attach;

		$this->attachinfo = @getimagesize($targetfile);

		

		if( $this->imagelib == 'gd2' ) {

			switch($this->attachinfo['mime'] ) {

				case 'image/jpeg':

					$this->imagecreatefromfunc = function_exists('imagecreatefromjpeg') ? 'imagecreatefromjpeg' : '';

					$this->imagefunc = function_exists('imagejpeg') ? 'imagejpeg' : '';

					break;

				case 'image/gif':

					$this->imagecreatefromfunc = function_exists('imagecreatefromgif') ? 'imagecreatefromgif' : '';

					$this->imagefunc = function_exists('imagegif') ? 'imagegif' : '';

					break;

				case 'image/png':

					$this->imagecreatefromfunc = function_exists('imagecreatefrompng') ? 'imagecreatefrompng': '';

					$this->imagefunc = function_exists('imagepng') ? 'imagepng' : '';

					break;

			}

		} else {

			$this->imagecreatefromfunc = true;

			$this->imagefunc = true;

		}

		

		$this->attach['size'] = empty($this->attach['size']) ? @filesize($targetfile) : $this->attach['size'];

		if( $this->attachinfo['mime'] == 'image/gif' ) {

			$fp = fopen($targetfile, 'rb');

			$targetfilecontent = fread($fp, $this->attach['size']);

			fclose($fp);

			$this->animatedgif = (strpos($targetfilecontent, 'NETSCAPE2.0') === false) ? 0 : 1;

		}

	}

	

	function thumb($thumbwidth, $thumbheight, $preview = 0) {

		if( $this->imagelib == 'im' && $this->imageimpath ) {

			$this->_thumb_im($thumbwidth, $thumbheight, $preview);

		} else {

			$this->_thumb_gd($thumbwidth, $thumbheight, $preview);

		}

		if( $this->thumbstatus == 2 && $this->watermarkstatus ) {

			$this->LibImageThumb($this->srcfile, $this->targetfile, $this->attach);

			$this->attach['size'] = filesize($this->targetfile);

		}

	}

	

	function watermark($preview = 0) {

		if( $watermarkminwidth && $this->attachinfo['0'] < $watermarkminwidth && $watermarkminheight && $this->attachinfo['1'] <= $watermarkminheight ) {

			//

		} elseif( $this->watermarktype == 2 && (!file_exists($watermarktext['fontpath']) || !is_file($watermarktext['fontpath'])) ) {

			//

		} else {

			if( $this->imagelib == 'im' && $this->imageimpath ) {

				$this->_watermark_im($preivew);

			} else {

				$this->_watermark_gd($preview);

			}

		}

	}

	

	//private

	function _thumb_gd($thumbwidth, $thumbheight, $preview = 0) {

		if( $this->thumbstatus && function_exists('imagecreatetruecolor') && function_exists('imagecopyresampled') && function_exists('imagejpeg') ) {

			$imagecreatefromfunc = $this->imagecreatefromfunc;

			$imagefunc = ($this->thumbstatus == 1) ? 'imagejpeg' : $this->imagefunc;

			

			list($img_w, $img_h) = $this->attachinfo;

			

			if( !$this->animatedgif && ($img_w >= $thumbwidth || $img_h >= $thumbheight) ) {

				//

				$attach_photo = $imagecreatefromfunc($this->targetfile);

				$x_ratio = $thumbwidth / $img_w;

				$y_ratio = $thumbheight / $img_h;

				if( ($x_ratio * $img_h) < $thumbheight ) {

					$thumb['height'] = ceil($x_ratio * $img_h);

					$thumb['width'] = $thumbwidth;

				} else {

					$thumb['width'] = ceil($y_ratio * $img_w);

					$thumb['height'] = $thumbheight;

				}

				//

				if( $preview == 0 ) {

					if( $this->thumbstatus == 1 ) {

						$targetfile = $this->targetfile . 'thumb.jpg';

					} else {

						$targetfile = $this->targetfile;

					}

				} else {

					$targetfile = $this->defaulttargetfile;

				}

				//

				$thumb_photo = imagecreatetruecolor($thumb['width'], $thumb['height']);

				imagecopyresampled($thumb_photo, $attach_photo, 0, 0, 0, 0, $thumb['width'], $thumb['height'], $img_w, $img_h);

				if( $this->attachinfo['mime'] == 'image/jpeg' ) {

					$imagefunc($thumb_photo, $targetfile, 100);

				} else {

					$imagefunc($thumb_photo, $targetfile);

				}

				$this->attach['thumb'] = ($this->thumbstatus) == 1 ? 1 : 0;

			}

		}

	}

	

	function _watermark_gd($preview = 0) {

		if( $this->watermarkstatus && function_exists('imagecopy') && function_exists('imagealphablending') && function_exists('imagecopymerge') ) {

			$imagecreatefromfunc = $this->imagecreatefromfunc;

			$imagefunc = $this->imagefunc;

			list($img_w, $img_h) = $this->attachinfo;

			if( $this->watermarktype < 2 ) {

				$watermark_file = ($this->watermarktype == 1) ? 'watermark.png' : 'watermark.gif';

				$watermarkinfo = @getimagesize($watermark_file);

				$watermark_logo = ($this->watermarktype == 1) ? @imagecreatefrompng($watermark_file) : imagecreatefromgif( $watermark_file);

				if( !$watermark_logo ) {

					return;

				}

				list($logo_w, $logo_h) = $watermarkinfo;

			} else {

				$watermarktextcvt = pack("H*", $this->watermarktext['text']);

				$box = imagettfbbox($this->watermarktext['size'], $this->watermarktext['angle'], $this->watermarktext['fontpath'], $this->watermarktextcvt);

				$logo_h = max($box['1'], $box['3']) - min($box['5'], $box['7']);

				$logo_w = max($box['2'], $box['4']) - min($box['0'], $box['7']);

				$ax = min($box['0'], $box['6']) * -1;

				$ay = min($box['5'], $box['7']) * -1;

			}

			$wmwidth = $img_w - $logo_w;

			$wmheight = $img_h - $logo_h;

			

			if( ($this->watermarktype < 2 && is_readable($watermark_file) || $this->watermarktype == 2) && $wmwidth > 10 && $wmheight > 10 && !$this->animatedgif ) {

				switch($this->watermarkstatus) {

					case 1:

						$x = +5;

						$y = +5;

						break;

					case 2:

						$x = ($img_w - $logo_w) / 2;

						$y = +5;

						break;

					case 3:

						$x = $img_w - $logo_w - 5;

						$y = +5;

						break;

					case 4:

						$x = +5;

						$y = ($img_h - $logo_h) / 2;

						break;

					case 5:

						$x = ($img_w - $logo_w) / 2;

						$y = ($img_h - $logo_h) / 2;

						break;

					case 6:

						$x = $img_w - $logo_w;

						$y = ($img_h - $logo_h) / 2;

						break;

					case 7:

						$x = +5;

						$y = $img_h - $logo_h - 5;

						break;

					case 8:

						$x = ($img_w - $logo_w) / 2;

						$y = $img_h - $logo_h - 5;

						break;

					case 9:

						$x = $img_w - $logo_w - 5;

						$y = $img_h - $logo_h - 5;

						break;

				}

				//

				$dst_photo = imagecreatetruecolor($img_w, $img_h);

				$target_photo = @$imagecreatefromfunc($this->targetfile);

				imagecopy($dest_photo, $target_photo, 0, 0, 0, 0, $img_w, $img_h);

				

				if( $this->watermarktype == 1 ) {

					imagecopy($dst_photo, $watermark_logo, $x, $y, 0, 0, $logo_w, $logo_h);

				} elseif( $this->watermarktype == 2 ) {

					if( ($this->watermarktext['shadowx'] || $this->watermarktext['shadowy']) && $this->watermarktext['shadowcolor'] ) {

						$shadowcolorrgb = explode(',', $watermarktext['shadowcolor']);

						$shadowcolor = imagecolorallocate($dst_photo, $shadowcolorrgb[0], $shadowcolorrgb[1], $shadowcolorrgb[2]);

						imagettftext($dst_photo, $watermarktext['size'], $watermarktext['angle'], $x + $ax + $watermarktext['shadowx'], $y + $ay + $watermarktext['shadowy'], $shadowcolor, $watermarktext['fontpath'], $watermarktextcvt);

					}

					$colorrgb = explode(',', $watermarktext['color']);

					$color = imagecolorallocate($dst_photo, $colorrgb[0], $colorrgb[1], $colorrgb[2]);

					imagettftext($dst_photo, $watermarktext['size'], $watermarktext['angle'], $x + $ax, $y + $ay, $color, $watermarktext['fontpath'], $watermarktextcvt);

				} else {

					imageAlphaBlending($watermark_logo, true);

					imageCopyMerge($dst_photo, $watermark_logo, $x, $y, 0, 0, $logo_w, $logo_h, $watermarktrans);

				}

				

				//

				$targetfile = ($preview == 0) ? $this->targetfile : $this->watermarkdefaultfile;

				if( $this->attachinfo['mime'] == 'image/jpeg' ) {

					$imagefunc($dst_photo, $targetfile, $this->watermarkquality);

				} else {

					$imagefunc($dst_photo, $targetfile);

				}

				$this->attach['size'] = filesize($this->targetfile);

			}

		}

	}

	

	function _thumb_im($thumbwidth, $thumbheight, $preview = 0) {

		if( $this->thumbstatus ) {

			list($img_w, $img_h) = $this->attachinfo;

			if( $preview == 0 ) {

				if( $this->thumbstatus == 1 ) {

					$targetfile = $this->targetfile . 'thumb.jpg';

				} else {

					$targetfile = $this->targetfile;

				}

			} else {

				$targetfile = $this->defaulttargetfile;

			}

			//

			if( !$this->animatedgif && ($img_w >= $thumbwidth || $img_h >= $thumb_height) ) {

				$exec_str = $this->imageimpath . 'convert -geometry ' . $thumbwidth . 'x' . $thumbheight . ' ' . $this->targetfile . " " . $targetfile;

				@exec($exec_str, $output, $return);

				if( empty($return) && empty($output) ) {

					$this->attach['thumb'] = ($this->thumbstatus == 1) ? 1 : 0;

				}

			

			}

		}

	}

	

	function _watermark_im($preview = 0) {

		switch($this->watermarkstatus) {

			case 1:

				$gravity = 'NorthWest';

				break;

			case 2:

				$gravity = 'North';

				break;

			case 3:

				$gravity = 'NorthEast';

				break;

			case 4:

				$gravity = 'West';

				break;

			case 5:

				$gravity = 'Center';

				break;

			case 6:

				$gravity = 'East';

				break;

			case 7:

				$gravity = 'SouthWest';

				break;

			case 8:

				$gravity = 'South';

				break;

			case 9:

				$gravity = 'SouthEast';

				break;

		}

		

		$targetfile = !$preview ? $this->targetfile : $this->watermarkdefault;

		if( $this->watermarktype < 2 ) {

			$watermark_file = ($this->watermarktype == 1) ? $this->watermarkpng : $this->watermarkgif;

			$exec_str = $this->imageimpath . '/composite'.

				($this->watermarktype != 1 && $this->watermarktrans != '100' ? ' -watermark '. $this->watermarktrans . '%' : '') .

				' -gravity ' . $this->gravity.

				' ' . $watermark_file . ' ' . $this->targetfile . ' ' . $targetfile;

		} else {

			$this->watermarktextcvt = str_replace(array("\n", "\r", "'"), array('', '', '\''), pack("H*", $this->watermarktext['text']));

			$this->watermarktext['angle'] = - $this->watermarktext['angle'];

			$translate = $this->watermarktext['translatex'] || $this->watermarktext['translatey'] ? ' translate ' . $this->watermarktext['translatex'] . ',' . $this->watermarktext['translatey'] : '';

			$skewX = $this->watermarktext['skewx'] ? ' skewX '.$watermarktext['skewx'] : '';

			$skewY = $this->watermarktext['skewy'] ? ' skewY '.$watermarktext['skewy'] : '';

			$exec_str = $this->imageimpath . '/convert'.

				' -font "' . $this->watermarktext['fontpath'] . '"' .

				' -pointsize ' . $this->watermarktext['size'] . 

				(($this->watermarktext['shadowx'] || $this->watermarktext['shadowy']) && $this->watermarktext['shadowcolor'] ?

					' -fill "rgb(' . $this->watermarktext['shadowcolor'].')"'.

					' -draw "'.

						' gravity ' . $gravity . $translate . $skewX . $skewY.

						' rotate ' . $this->watermarktext['angle'] . 

						' text ' . $this->watermarktext['shadowx'] . ',' . $this->watermarktext['shadowy'].' \'' . $this->watermarktextcvt . '\'"' : '') . 

				' -fill "rgb(' . $this->watermarktext['color'] . ')"' .

				' -draw "'.

					' gravity ' . $gravity . $translate . $skewX . $skewY . 

					' rotate ' . $this->watermarktext['angle'] . 

					' text 0,0 \'' . $this->watermarktextcvt . '\'"' . 

				' ' . $this->targetfile . ' '. $targetfile;

		}

		@exec($exec_str, $output, $return);

		if( empty($return) && empty($output) ) {

			$this->attach['size'] = filesize($this->targetfile);

		}

	}

}

//

?>