php给图片加水印函数 |
时间:2015-01-23 来源:西部数据 作者:西部数据 |
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- 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);
- }
- }
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