note 77085 modified in function.imagealphablending by ronabop
| From: | ronabop@php.net | Date: | Tue, 26 Feb 2008 20:42:51 +0000 |
| Subject: | note 77085 modified in function.imagealphablending by ronabop | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-136517@lists.php.net to get a copy of this message | ||
I have create a little function for putting a watermark on any picture.
Watermark can be png, with transparency, and the watermark can be placed anywhere on the image,
using simple strings such as 'bottom-left', or 'center'.
<?
function imagelogo (&$dst_image, $src_image, $dst_w, $dst_h, $src_w, $src_h,
$position='bottom-left') {
imagealphablending($dst_image,true);
imagealphablending($src_image,true);
if ($position == 'random') {
$position = rand(1,8);
}
switch ($position) {
case 'top-right':
case 'right-top':
case 1:
imagecopy($dst_image, $src_image, ($dst_w-$src_w), 0, 0, 0, $src_w, $src_h);
break;
case 'top-left':
case 'left-top':
case 2:
imagecopy($dst_image, $src_image, 0, 0, 0, 0, $src_w, $src_h);
break;
case 'bottom-right':
case 'right-bottom':
case 3:
imagecopy($dst_image, $src_image, ($dst_w-$src_w), ($dst_h-$src_h), 0, 0, $src_w, $src_h);
break;
case 'bottom-left':
case 'left-bottom':
case 4:
imagecopy($dst_image, $src_image, 0 , ($dst_h-$src_h), 0, 0, $src_w, $src_h);
break;
case 'center':
case 5:
imagecopy($dst_image, $src_image, (($dst_w/2)-($src_w/2)), (($dst_h/2)-($src_h/2)), 0, 0, $src_w,
$src_h);
break;
case 'top':
case 6:
imagecopy($dst_image, $src_image, (($dst_w/2)-($src_w/2)), 0, 0, 0, $src_w, $src_h);
break;
case 'bottom':
case 7:
imagecopy($dst_image, $src_image, (($dst_w/2)-($src_w/2)), ($dst_h-$src_h), 0, 0, $src_w,
$src_h);
break;
case 'left':
case 8:
imagecopy($dst_image, $src_image, 0, (($dst_h/2)-($src_h/2)), 0, 0, $src_w, $src_h);
break;
case 'right':
case 9:
imagecopy($dst_image, $src_image, ($dst_w-$src_w), (($dst_h/2)-($src_h/2)), 0, 0, $src_w,
$src_h);
break;
}
}
// example:
imagelogo($image, $watermark, imagesx($image), imagesy($image), imagesx($watermark),
imagesy($watermark), 'random');
?>
--was--
I have create a little function for putting a watermark on any picture.
Watermark can be png, with transparency, and the watermark can be placed anywhere on the image,
using simple strings such as 'bottom-left', or 'center'.
<?
function imagelogo (&$dst_image, $src_image, $dst_w, $dst_h, $src_w, $src_h,
$position='bottom-left') {
imagealphablending($dst_image,true);
imagealphablending($src_image,true);
if ($position == 'random') {
$position = rand(1,8);
}
switch ($position) {
case 'top-right':
case 'right-top':
case 1:
imagecopy($dst_image, $src_image, ($dst_w-$src_w), 0, 0, 0, $src_w, $src_h);
break;
case 'top-left':
case 'left-top':
case 2:
imagecopy($dst_image, $src_image, 0, 0, 0, 0, $src_w, $src_h);
break;
case 'bottom-right':
case 'right-bottom':
case 3:
imagecopy($dst_image, $src_image, ($dst_w-$src_w), ($dst_h-$src_h), 0, 0, $src_w, $src_h);
break;
case 'bottom-left':
case 'left-bottom':
case 4:
imagecopy($dst_image, $src_image, 0 , ($dst_h-$src_h), 0, 0, $src_w, $src_h);
break;
case 'center':
case 5:
imagecopy($dst_image, $src_image, (($dst_w/2)-($src_w/2)), (($dst_h/2)-($src_h/2)), 0, 0, $src_w,
$src_h);
break;
case 'top':
case 5:
imagecopy($dst_image, $src_image, (($dst_w/2)-($src_w/2)), 0, 0, 0, $src_w, $src_h);
break;
case 'bottom':
case 6:
imagecopy($dst_image, $src_image, (($dst_w/2)-($src_w/2)), ($dst_h-$src_h), 0, 0, $src_w,
$src_h);
break;
case 'left':
case 7:
imagecopy($dst_image, $src_image, 0, (($dst_h/2)-($src_h/2)), 0, 0, $src_w, $src_h);
break;
case 'right':
case 8:
imagecopy($dst_image, $src_image, ($dst_w-$src_w), (($dst_h/2)-($src_h/2)), 0, 0, $src_w,
$src_h);
break;
}
}
// example:
imagelogo($image, $watermark, imagesx($image), imagesy($image), imagesx($watermark),
imagesy($watermark), 'random');
?>
http://php.net/manual/en/function.imagealphablending.php