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if exif extension is available, use it to fetch thumbnails from jpeg or tiff files

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This commit is contained in:
Ralf Becker 2015-01-10 13:15:17 +00:00
parent 50d87c2963
commit baf79766a6
1 changed files with 23 additions and 8 deletions
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31
etemplate/thumbnail.php
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@ -148,7 +148,7 @@ function read_thumbnail($src)
$mime = egw_vfs::mime_content_type($src);
list($app, $icon) = explode('/', egw_vfs::mime_icon($mime), 2);
list(, $path) = explode($GLOBALS['egw_info']['server']['webserver_url'],
$GLOBALS['egw']->common->image($app, $icon), 2);
common::image($app, $icon), 2);
$dst = EGW_SERVER_ROOT.$path;
$output_mime = mime_content_type($dst);
}
@ -226,12 +226,28 @@ function get_scaled_image_size($w, $h, $maxw, $maxh)
}
}
/**
* Read thumbnail from image, without loading it completly using optional exif extension
*
* @param string $file
* @return boolean|resource false or a gd_image
*/
function exif_thumbnail_load($file)
{
if (!function_exists('exif_thumbnail') ||
!($image = exif_thumbnail($file)))
{
return false;
}
return imagecreatefromstring($image);
}
/**
* Loads the given imagefile - returns "false" if the file wasn't an image,
* otherwise the gd-image is returned.
*
* @param string $file the file which to load
* @returns false or a gd_image
* @returns boolean|resource false or a gd_image
*/
function gd_image_load($file)
{
@ -241,11 +257,14 @@ function gd_image_load($file)
// Call the according gd constructor depending on the file type
if($type == 'image')
{
if (in_array($image_type, array('tiff','jpeg')) && ($image = exif_thumbnail_load($file)))
{
return $image;
}
switch ($image_type)
{
case 'png':
return imagecreatefrompng($file);
case 'jpg':
case 'jpeg':
return imagecreatefromjpeg($file);
case 'gif':
@ -279,7 +298,7 @@ function get_opendocument_thumbnail($file)
// Don't bother if they're using tiny thumbnails
if(get_maxsize() < 64) return false;
list($type, $file_type) = explode('/', egw_vfs::mime_content_type($file));
list(, $file_type) = $mimetype = explode('/', egw_vfs::mime_content_type($file));
// Image is already there, but we can't access them directly through VFS
$ext = $mimetype == 'application/vnd.oasis.opendocument.text' ? '.odt' : '.ods';
@ -309,10 +328,6 @@ function get_opendocument_thumbnail($file)
case 'vnd.oasis.opendocument.database':
$filter_color = array(83,2,96); break;
}
if($colors[$image_type])
{
$filter_color = $colors[$image_type];
}
imagefilter($mask, IMG_FILTER_COLORIZE, $filter_color[0],$filter_color[1],$filter_color[2] );
imagecopyresampled($image, $mask,0,0,0,0,imagesx($image),imagesy($image),imagesx($mask),imagesy($mask));
}