// Set all params for requested size:
list($thumb_type, $thumb_width, $thumb_height, $thumb_quality, $thumb_percent_blur) = $thumbnail_sizes[$size_name];
$Filetype =& $File->get_Filetype();
// pre_dump( $Filetype );
// TODO: dh> Filetype may be NULL here! see also r1.18 (IIRC)
$mimetype = $Filetype->mimetype;
// pre_dump( $mimetype );
// Try to output the cached thumbnail:
$err = $File->output_cached_thumb($size_name, $mimetype, $mtime, $size_x);
//pre_dump( $err );
if ($err == '!Thumbnail not found in' . $Settings->get('evocache_foldername')) {
// The thumbnail wasn't already in the cache, try to generate and cache it now:
$err = NULL;
// Short error code
list($src_width, $src_height) = imgsize($File->get_full_path());
if (!$resample_all_images && check_thumbnail_sizes($thumb_type, $thumb_width, $thumb_height, $src_width, $src_height)) {
// There is no need to resample, use original!
$err = $File->get_af_thumb_path($size_name, $mimetype, true, $size_x);
if ($err[0] != '!' && @copy($File->get_full_path(), $err)) {
// File was saved. Ouput that same file immediately:
// note: @copy returns FALSE on failure, if not muted it'll print the error on screen
$err = $File->output_cached_thumb($size_name, $mimetype, $mtime, $size_x);
}
} else {
// Resample
list($err, $src_imh) = load_image($File->get_full_path(), $mimetype);
if (empty($err)) {
list($err, $dest_imh) = generate_thumb($src_imh, $thumb_type, $thumb_width, $thumb_height, $thumb_percent_blur, $size_x);
if (empty($err)) {
$err = $File->save_thumb_to_cache($dest_imh, $size_name, $mimetype, $thumb_quality, $size_x);
if (empty($err)) {
/**
* Generate a thumbnail
*
* @param resource Image resource
* @param string Thumbnail type ('crop'|'crop-top'|'fit')
* @param int Thumbnail width
* @param int Thumbnail height
* @param int Thumbnail percent of blur effect (0 - No blur, 1% - Max blur effect, 99% - Min blur effect)
* @param integer Ratio size, can be 1, 2 and etc.
* @return array short error code + dest image handler
*/
function generate_thumb($src_imh, $thumb_type, $thumb_width, $thumb_height, $thumb_percent_blur = 0, $size_x = 1)
{
$src_width = imagesx($src_imh);
$src_height = imagesy($src_imh);
$size_x = intval($size_x);
if ($size_x > 1) {
// Use the expanded size
$thumb_width = $thumb_width * $size_x;
$thumb_height = $thumb_height * $size_x;
}
if (check_thumbnail_sizes($thumb_type, $thumb_width, $thumb_height, $src_width, $src_height)) {
// There is no need to resample, use original!
return array(NULL, $src_imh);
}
switch ($thumb_type) {
case 'crop':
case 'crop-top':
$align = $thumb_type == 'crop-top' ? 'top' : 'center';
list($src_x, $src_y, $src_width, $src_height) = crop_to_constraint($src_width, $src_height, $thumb_width, $thumb_height, $align);
$dest_width = $thumb_width;
$dest_height = $thumb_height;
break;
case 'fit':
default:
list($dest_width, $dest_height) = scale_to_constraint($src_width, $src_height, $thumb_width, $thumb_height);
$src_x = $src_y = 0;
}
// pre_dump( $src_x, $src_y, $dest_width, $dest_height, $src_width, $src_height );
// Create a transparent image:
$dest_imh = imagecreatetruecolor($dest_width, $dest_height);
imagealphablending($dest_imh, true);
imagefill($dest_imh, 0, 0, imagecolortransparent($dest_imh, imagecolorallocatealpha($dest_imh, 0, 0, 0, 127)));
imagesavealpha($dest_imh, true);
if (!imagecopyresampled($dest_imh, $src_imh, 0, 0, $src_x, $src_y, $dest_width, $dest_height, $src_width, $src_height)) {
return array('!GD-library internal error (resample)', $dest_imh);
}
if ($thumb_percent_blur > 0) {
// Apply blur effect
$dest_imh = pixelblur($dest_imh, $dest_width, $dest_height, $thumb_percent_blur);
}
// TODO: imageinterlace();
return array(NULL, $dest_imh);
}
/**
* Calculate what sizes are used for thumbnail really
*
* @param string Thumbnail size name
* @return boolean|array FALSE on wrong size name OR Array with keys: 0 - width, 1 - height
*/
function get_thumb_size($size_name = 'fit-80x80')
{
global $thumbnail_sizes;
if (!isset($thumbnail_sizes[$size_name])) {
// Wrong thumbnail size name
return false;
}
$thumb_type = $thumbnail_sizes[$size_name][0];
$thumb_width = $thumbnail_sizes[$size_name][1];
$thumb_height = $thumbnail_sizes[$size_name][2];
load_funcs('files/model/_image.funcs.php');
list($orig_width, $orig_height) = $this->get_image_size('widthheight');
if (check_thumbnail_sizes($thumb_type, $thumb_width, $thumb_height, $orig_width, $orig_height)) {
// Use the sizes of the original image
$width = $orig_width;
$height = $orig_height;
} else {
// Calculate the sizes depending on thumbnail type
if ($thumb_type == 'fit') {
list($width, $height) = scale_to_constraint($orig_width, $orig_height, $thumb_width, $thumb_height);
} else {
// crop & crop-top
$width = $thumb_width;
$height = $thumb_height;
}
}
return array($width, $height);
}
