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authorFlorian Pritz <bluewind@xinu.at>2014-09-29 00:41:35 +0200
committerFlorian Pritz <bluewind@xinu.at>2014-10-03 14:22:34 +0200
commit9b0b9a0e6082b3375ebdadc651c971671c922ebc (patch)
tree952f529eb974af6091a6f401b6aca012ddc4005d /application/models
parent64628978d76c19e946754acc922144aff739b83d (diff)
Move thumbnail code to dedicated class
This also moves the code from mfile->image_dimension() to the only place where it was called. Signed-off-by: Florian Pritz <bluewind@xinu.at>
Diffstat (limited to 'application/models')
-rw-r--r--application/models/mfile.php172
1 files changed, 0 insertions, 172 deletions
diff --git a/application/models/mfile.php b/application/models/mfile.php
index c4d2c6e68..f23855bfd 100644
--- a/application/models/mfile.php
+++ b/application/models/mfile.php
@@ -102,178 +102,6 @@ class Mfile extends CI_Model {
return $mimetype;
}
- public function image_dimension($file)
- {
- list($width, $height) = getimagesize($file);
-
- return "${width}x${height}";
- }
-
- /*
- * This returns a square thumbnail for the input image
- * Source: http://salman-w.blogspot.co.at/2009/04/crop-to-fit-image-using-aspphp.html
- */
- public function makeThumb($id, $size = 150, $target_type = null)
- {
- $filedata = $this->get_filedata($id);
- if (!$filedata) {
- return false;
- }
-
- $source_path = $this->file($filedata["hash"]);
-
- $source_gdim = imagecreatefromstring(file_get_contents($source_path));
- if ($source_gdim === false) {
- show_error("Unsupported image type");
- }
- imagealphablending($source_gdim,false);
- imagesavealpha($source_gdim,true);
-
- list($source_width, $source_height, $source_type) = getimagesize($source_path);
-
- if ($target_type === null) {
- $target_type = $source_type;
- }
-
- $target_width = $size;
- $target_height = $size;
-
- $source_aspect_ratio = $source_width / $source_height;
- $desired_aspect_ratio = $target_width / $target_height;
-
- if ($source_aspect_ratio > $desired_aspect_ratio) {
- // Triggered when source image is wider
- $temp_height = $target_height;
- $temp_width = round(($target_height * $source_aspect_ratio));
- } else {
- // Triggered otherwise (i.e. source image is similar or taller)
- $temp_width = $target_width;
- $temp_height = round(($target_width / $source_aspect_ratio));
- }
-
- /*
- * Resize the image into a temporary GD image
- */
-
- $temp_gdim = imagecreatetruecolor($temp_width, $temp_height);
- imagealphablending($temp_gdim,false);
- imagesavealpha($temp_gdim,true);
- imagecopyresampled(
- $temp_gdim,
- $source_gdim,
- 0, 0,
- 0, 0,
- $temp_width, $temp_height,
- $source_width, $source_height
- );
-
- /*
- * Copy cropped region from temporary image into the desired GD image
- */
-
- $x0 = ($temp_width - $target_width) / 2;
- $y0 = ($temp_height - $target_height) / 2;
- $thumb = imagecreatetruecolor($target_width, $target_height);
- imagealphablending($thumb,false);
- imagesavealpha($thumb,true);
- imagecopy(
- $thumb,
- $temp_gdim,
- 0, 0,
- $x0, $y0,
- $target_width, $target_height
- );
-
- /*
- * Fix orientation according to exif tag
- */
- try {
- $exif = exif_read_data($source_path);
- } catch (ErrorException $e) {
- }
-
- if (isset($exif['Orientation'])) {
- $mirror = false;
- $deg = 0;
-
- switch ($exif['Orientation']) {
- case 2:
- $mirror = true;
- break;
- case 3:
- $deg = 180;
- break;
- case 4:
- $deg = 180;
- $mirror = true;
- break;
- case 5:
- $deg = 270;
- $mirror = true;
- break;
- case 6:
- $deg = 270;
- break;
- case 7:
- $deg = 90;
- $mirror = true;
- break;
- case 8:
- $deg = 90;
- break;
- }
- if ($deg) $thumb = imagerotate($thumb, $deg, 0);
- if ($mirror) $thumb = $this->_mirrorImage($thumb);
- }
-
- ob_start();
- switch ($target_type) {
- case IMAGETYPE_GIF:
- $ret = imagegif($thumb);
- break;
- case IMAGETYPE_JPEG:
- $ret = imagejpeg($thumb);
- break;
- case IMAGETYPE_PNG:
- $ret = imagepng($thumb);
- break;
- default:
- assert(0);
- }
- $result = ob_get_clean();
-
- if (!$ret) {
- show_error("Failed to create thumbnail");
- }
-
- imagedestroy($thumb);
- imagedestroy($temp_gdim);
- imagedestroy($source_gdim);
-
- return $result;
- }
-
- function _mirrorImage($imgsrc)
- {
- $width = imagesx($imgsrc);
- $height = imagesy($imgsrc);
-
- $src_x = $width -1;
- $src_y = 0;
- $src_width = -$width;
- $src_height = $height;
-
- $imgdest = imagecreatetruecolor($width, $height);
- imagealphablending($imgdest,false);
- imagesavealpha($imgdest,true);
-
- if (imagecopyresampled($imgdest, $imgsrc, 0, 0, $src_x, $src_y, $width, $height, $src_width, $src_height)) {
- return $imgdest;
- }
-
- return $imgsrc;
- }
-
// Add a hash to the DB
function add_file($hash, $id, $filename)
{