image.class.php | searchcode

/include/image.class.php

https://github.com/gcao/bbs
PHP | 350 lines | 311 code | 33 blank | 6 comment | 105 complexity | c923db96dff9b57f8989d6c8f487c2a7 MD5 | raw file

<?



/*

	[Discuz!] (C)2001-2009 Comsenz Inc.

	This is NOT a freeware, use is subject to license terms



	$Id: image.class.php 19557 2009-09-04 08:44:50Z monkey $

*/



if(!defined('IN_DISCUZ')) {

	exit('Access Denied');

}



class Image {



	var $attachinfo = '';

	var $targetfile = '';

	var $imagecreatefromfunc = '';

	var $imagefunc = '';

	var $attach = array();

	var $animatedgif = 0;

	var $error = 0;



	function Image($targetfile, $attach = array()) {

		global $imagelib, $watermarktext, $imageimpath;

		$this->targetfile = $targetfile;

		$this->attach = $attach;

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

		if(!$imagelib || !$imageimpath) {

			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 = $this->imagefunc = TRUE;

		}



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

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

			if($this->imagecreatefromfunc && !@imagecreatefromgif($targetfile)) {

				$this->error = 1;

				$this->imagecreatefromfunc = $this->imagefunc = '';

				return FALSE;

			}

			$fp = fopen($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) {

		global $imagelib, $imageimpath, $thumbstatus, $watermarkstatus;

		$imagelib && $imageimpath ? $this->Thumb_IM($thumbwidth, $thumbheight, $preview) : $this->Thumb_GD($thumbwidth, $thumbheight, $preview);

		if($thumbstatus == 2 && $watermarkstatus) {

			$this->Image($this->targetfile, $this->attach);

		}

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

	}



	function Watermark($preview = 0) {

		global $imagelib, $imageimpath, $watermarktype, $watermarktext, $watermarkminwidth, $watermarkminheight;

		if(($watermarkminwidth && $this->attachinfo[0] <= $watermarkminwidth && $watermarkminheight && $this->attachinfo[1] <= $watermarkminheight) || ($watermarktype == 2 && (!file_exists($watermarktext['fontpath']) || !is_file($watermarktext['fontpath'])))) {

			return;

		}

		$imagelib && $imageimpath ? $this->Watermark_IM($preview) : $this->Watermark_GD($preview);

	}



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

		global $thumbstatus, $thumbquality;



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

			$imagecreatefromfunc = $this->imagecreatefromfunc;

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

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



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



				if($thumbstatus != 3) {

					$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;

					}



					$targetfile = !$preview ? ($thumbstatus == 1 ? $this->targetfile.'.thumb.jpg' : $this->targetfile) : DISCUZ_ROOT.'./forumdata/watermark_temp.jpg';

					$cx = $img_w;

					$cy = $img_h;

				} else {

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



					$imgratio = $img_w / $img_h;

					$thumbratio = $thumbwidth / $thumbheight;



					if($imgratio >= 1 && $imgratio >= $thumbratio || $imgratio < 1 && $imgratio > $thumbratio) {

						$cuty = $img_h;

						$cutx = $cuty * $thumbratio;

					} elseif($imgratio >= 1 && $imgratio <= $thumbratio || $imgratio < 1 && $imgratio < $thumbratio) {

						$cutx = $img_w;

						$cuty = $cutx / $thumbratio;

					}



					$dst_photo = imagecreatetruecolor($cutx, $cuty);

					@imageCopyMerge($dst_photo, $attach_photo, 0, 0, 0, 0, $cutx, $cuty, 100);



					$thumb['width'] = $thumbwidth;

					$thumb['height'] = $thumbheight;



					$targetfile = !$preview ? $this->targetfile.'.thumb.jpg' : DISCUZ_ROOT.'./forumdata/watermark_temp.jpg';

					$cx = $cutx;

					$cy = $cuty;

				}



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

				@imageCopyreSampled($thumb_photo, $attach_photo ,0, 0, 0, 0, $thumb['width'], $thumb['height'], $cx, $cy);

				clearstatcache();

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

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

				} else {

					$imagefunc($thumb_photo, $targetfile);

				}

				$this->attach['thumb'] = $thumbstatus == 1 || $thumbstatus == 3 ? 1 : 0;

			}

		}

	}



	function Watermark_GD($preview = 0) {

		global $watermarkstatus, $watermarktype, $watermarktrans, $watermarkquality, $watermarktext;

		$watermarkstatus = $GLOBALS['forum']['disablewatermark'] ? 0 : $watermarkstatus;



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

			$imagecreatefromfunc = $this->imagecreatefromfunc;

			$imagefunc = $this->imagefunc;

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

			if($watermarktype < 2) {

				$watermark_file = $watermarktype == 1 ? './images/common/watermark.png' : './images/common/watermark.gif';

				$watermarkinfo	= @getimagesize($watermark_file);

				$watermark_logo	= $watermarktype == 1 ? @imageCreateFromPNG($watermark_file) : @imageCreateFromGIF($watermark_file);

				if(!$watermark_logo) {

					return;

				}

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

			} else {

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

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

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

				$logo_w = max($box[2], $box[4]) - min($box[0], $box[6]);

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

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

			}

			$wmwidth = $img_w - $logo_w;

			$wmheight = $img_h - $logo_h;



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

				switch($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($dst_photo, $target_photo, 0, 0, 0, 0, $img_w, $img_h);



				if($watermarktype == 1) {

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

				} elseif($watermarktype == 2) {

					if(($watermarktext['shadowx'] || $watermarktext['shadowy']) && $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 ? $this->targetfile : DISCUZ_ROOT.'./forumdata/watermark_temp.jpg';

				clearstatcache();

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

					$imagefunc($dst_photo, $targetfile, $watermarkquality);

				} else {

					$imagefunc($dst_photo, $targetfile);

				}



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

			}

		}

	}



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

		global $thumbstatus, $imageimpath, $thumbquality;

		if($thumbstatus) {

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

			$targetfile = !$preview ? ($thumbstatus == 1 || $thumbstatus == 3 ? $this->targetfile.'.thumb.jpg' : $this->targetfile) : DISCUZ_ROOT.'./forumdata/watermark_temp.jpg';

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

				if($thumbstatus != 3) {

					$exec_str = $imageimpath.'/convert -quality '.intval($thumbquality).' -geometry '.$thumbwidth.'x'.$thumbheight.' '.$this->targetfile.' '.$targetfile;

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

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

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

					}

				} else {

					$imgratio = $img_w / $img_h;

					$thumbratio = $thumbwidth / $thumbheight;



					if($imgratio >= 1 && $imgratio >= $thumbratio || $imgratio < 1 && $imgratio > $thumbratio) {

						$cuty = $img_h;

						$cutx = $cuty * $thumbratio;

					} elseif($imgratio >= 1 && $imgratio <= $thumbratio || $imgratio < 1 && $imgratio < $thumbratio) {

						$cutx = $img_w;

						$cuty = $cutx / $thumbratio;

					}

					$exec_str = $imageimpath.'/convert -crop '.$cutx.'x'.$cuty.'+0+0  '.$this->targetfile.' '.$targetfile;

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

					$exec_str = $imageimpath.'/convert -quality '.intval($thumbquality).' -geometry '.$thumbwidth.'x'.$thumbheight.' '.$targetfile.' '.$targetfile;

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

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

						$this->attach['thumb'] = $thumbstatus == 1 || $thumbstatus == 3 ? 1 : 0;

					}

				}

	           	}

		}

	}



	function Watermark_IM($preview = 0) {

		global $watermarkstatus, $watermarktype, $watermarktrans, $watermarkquality, $watermarktext, $imageimpath;

		$watermarkstatus = $GLOBALS['forum']['disablewatermark'] ? 0 : $watermarkstatus;



		switch($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 : DISCUZ_ROOT.'./forumdata/watermark_temp.jpg';

		if($watermarktype < 2) {

			$watermark_file = $watermarktype == 1 ? DISCUZ_ROOT.'./images/common/watermark.png' : DISCUZ_ROOT.'./images/common/watermark.gif';

			$exec_str = $imageimpath.'/composite'.

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

				' -quality '.$watermarkquality.

				' -gravity '.$gravity.

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

		} else {

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

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

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

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

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

			$exec_str = $imageimpath.'/convert'.

				' -quality '.$watermarkquality.

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

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

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

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

					' -draw "'.

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

						' rotate '.$watermarktext['angle'].

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

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

				' -draw "'.

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

					' rotate '.$watermarktext['angle'].

					' text 0,0 \''.$watermarktextcvt.'\'"'.

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

		}

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

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

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

		}

	}



}