<?php
/**
- * Laconica, the distributed open-source microblogging tool
+ * StatusNet, the distributed open-source microblogging tool
*
* Abstraction for an image file
*
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Image
- * @package Laconica
- * @author Evan Prodromou <evan@controlyourself.ca>
- * @author Zach Copley <zach@controlyourself.ca>
- * @copyright 2008-2009 Control Yourself, Inc.
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @author Zach Copley <zach@status.net>
+ * @copyright 2008-2009 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
- * @link http://laconi.ca/
+ * @link http://status.net/
*/
-if (!defined('LACONICA')) {
+if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
* Makes it slightly easier to accept an image file from upload.
*
* @category Image
- * @package Laconica
- * @author Evan Prodromou <evan@controlyourself.ca>
- * @author Zach Copley <zach@controlyourself.ca>
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @author Zach Copley <zach@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
- * @link http://laconi.ca/
+ * @link http://status.net/
*/
class ImageFile
{
- var $filename = null;
- var $barename = null;
- var $type = null;
- var $height = null;
- var $width = null;
+ var $id;
+ var $filepath;
+ var $barename;
+ var $type;
+ var $height;
+ var $width;
- function __construct($filename=null, $type=null, $width=null, $height=null)
+ function __construct($id=null, $filepath=null, $type=null, $width=null, $height=null)
{
- $this->filename = $filename;
- $this->type = $type;
- $this->width = $type;
- $this->height = $type;
+ $this->id = $id;
+ $this->filepath = $filepath;
+
+ $info = @getimagesize($this->filepath);
+
+ if (!(
+ ($info[2] == IMAGETYPE_GIF && function_exists('imagecreatefromgif')) ||
+ ($info[2] == IMAGETYPE_JPEG && function_exists('imagecreatefromjpeg')) ||
+ $info[2] == IMAGETYPE_BMP ||
+ ($info[2] == IMAGETYPE_WBMP && function_exists('imagecreatefromwbmp')) ||
+ ($info[2] == IMAGETYPE_XBM && function_exists('imagecreatefromxbm')) ||
+ ($info[2] == IMAGETYPE_PNG && function_exists('imagecreatefrompng')))) {
+
+ throw new Exception(_('Unsupported image file format.'));
+ return;
+ }
+
+ $this->type = ($info) ? $info[2]:$type;
+ $this->width = ($info) ? $info[0]:$width;
+ $this->height = ($info) ? $info[1]:$height;
}
static function fromUpload($param='upload')
{
switch ($_FILES[$param]['error']) {
- case UPLOAD_ERR_OK: // success, jump out
+ case UPLOAD_ERR_OK: // success, jump out
break;
- case UPLOAD_ERR_INI_SIZE:
- case UPLOAD_ERR_FORM_SIZE:
- throw new Exception(_('That file is too big.'));
+ case UPLOAD_ERR_INI_SIZE:
+ case UPLOAD_ERR_FORM_SIZE:
+ throw new Exception(sprintf(_('That file is too big. The maximum file size is %s.'),
+ ImageFile::maxFileSize()));
return;
- case UPLOAD_ERR_PARTIAL:
+ case UPLOAD_ERR_PARTIAL:
@unlink($_FILES[$param]['tmp_name']);
throw new Exception(_('Partial upload.'));
return;
- default:
+ case UPLOAD_ERR_NO_FILE:
+ // No file; probably just a non-AJAX submission.
+ return;
+ default:
+ common_log(LOG_ERR, __METHOD__ . ": Unknown upload error " .
+ $_FILES[$param]['error']);
throw new Exception(_('System error uploading file.'));
return;
}
- $imagefile = new ImageFile($_FILES[$param]['tmp_name']);
- $info = @getimagesize($imagefile->filename);
+ $info = @getimagesize($_FILES[$param]['tmp_name']);
if (!$info) {
- @unlink($imagefile->filename);
+ @unlink($_FILES[$param]['tmp_name']);
throw new Exception(_('Not an image or corrupt file.'));
return;
}
- $imagefile->width = $info[0];
- $imagefile->height = $info[1];
+ return new ImageFile(null, $_FILES[$param]['tmp_name']);
+ }
+
+ function resize($size, $x = 0, $y = 0, $w = null, $h = null)
+ {
+ $w = ($w === null) ? $this->width:$w;
+ $h = ($h === null) ? $this->height:$h;
+
+ if (!file_exists($this->filepath)) {
+ throw new Exception(_('Lost our file.'));
+ return;
+ }
+
+ // Don't crop/scale if it isn't necessary
+ if ($size === $this->width
+ && $size === $this->height
+ && $x === 0
+ && $y === 0
+ && $w === $this->width
+ && $h === $this->height) {
- switch ($info[2]) {
- case IMAGETYPE_GIF:
- case IMAGETYPE_JPEG:
- case IMAGETYPE_PNG:
- $imagefile->type = $info[2];
+ $outname = Avatar::filename($this->id,
+ image_type_to_extension($this->type),
+ $size,
+ common_timestamp());
+ $outpath = Avatar::path($outname);
+ @copy($this->filepath, $outpath);
+ return $outname;
+ }
+
+ switch ($this->type) {
+ case IMAGETYPE_GIF:
+ $image_src = imagecreatefromgif($this->filepath);
break;
- default:
- @unlink($imagefile->filename);
- throw new Exception(_('Unsupported image file format.'));
+ case IMAGETYPE_JPEG:
+ $image_src = imagecreatefromjpeg($this->filepath);
+ break;
+ case IMAGETYPE_PNG:
+ $image_src = imagecreatefrompng($this->filepath);
+ break;
+ case IMAGETYPE_BMP:
+ $image_src = imagecreatefrombmp($this->filepath);
+ break;
+ case IMAGETYPE_WBMP:
+ $image_src = imagecreatefromwbmp($this->filepath);
+ break;
+ case IMAGETYPE_XBM:
+ $image_src = imagecreatefromxbm($this->filepath);
+ break;
+ default:
+ throw new Exception(_('Unknown file type'));
return;
}
- return $imagefile;
+ $image_dest = imagecreatetruecolor($size, $size);
+
+ if ($this->type == IMAGETYPE_GIF || $this->type == IMAGETYPE_PNG || $this->type == IMAGETYPE_BMP) {
+
+ $transparent_idx = imagecolortransparent($image_src);
+
+ if ($transparent_idx >= 0) {
+
+ $transparent_color = imagecolorsforindex($image_src, $transparent_idx);
+ $transparent_idx = imagecolorallocate($image_dest, $transparent_color['red'], $transparent_color['green'], $transparent_color['blue']);
+ imagefill($image_dest, 0, 0, $transparent_idx);
+ imagecolortransparent($image_dest, $transparent_idx);
+
+ } elseif ($this->type == IMAGETYPE_PNG) {
+
+ imagealphablending($image_dest, false);
+ $transparent = imagecolorallocatealpha($image_dest, 0, 0, 0, 127);
+ imagefill($image_dest, 0, 0, $transparent);
+ imagesavealpha($image_dest, true);
+
+ }
+ }
+
+ imagecopyresampled($image_dest, $image_src, 0, 0, $x, $y, $size, $size, $w, $h);
+
+ if($this->type == IMAGETYPE_BMP) {
+ //we don't want to save BMP... it's an inefficient, rare, antiquated format
+ //save png instead
+ $this->type = IMAGETYPE_PNG;
+ } else if($this->type == IMAGETYPE_WBMP) {
+ //we don't want to save WBMP... it's a rare format that we can't guarantee clients will support
+ //save png instead
+ $this->type = IMAGETYPE_PNG;
+ } else if($this->type == IMAGETYPE_XBM) {
+ //we don't want to save XBM... it's a rare format that we can't guarantee clients will support
+ //save png instead
+ $this->type = IMAGETYPE_PNG;
+ }
+
+ $outname = Avatar::filename($this->id,
+ image_type_to_extension($this->type),
+ $size,
+ common_timestamp());
+
+ $outpath = Avatar::path($outname);
+
+ switch ($this->type) {
+ case IMAGETYPE_GIF:
+ imagegif($image_dest, $outpath);
+ break;
+ case IMAGETYPE_JPEG:
+ imagejpeg($image_dest, $outpath, 100);
+ break;
+ case IMAGETYPE_PNG:
+ imagepng($image_dest, $outpath);
+ break;
+ default:
+ throw new Exception(_('Unknown file type'));
+ return;
+ }
+
+ imagedestroy($image_src);
+ imagedestroy($image_dest);
+
+ return $outname;
}
function unlink()
{
@unlink($this->filename);
}
-}
\ No newline at end of file
+
+ static function maxFileSize()
+ {
+ $value = ImageFile::maxFileSizeInt();
+
+ if ($value > 1024 * 1024) {
+ return ($value/(1024*1024)) . _('MB');
+ } else if ($value > 1024) {
+ return ($value/(1024)) . _('kB');
+ } else {
+ return $value;
+ }
+ }
+
+ static function maxFileSizeInt()
+ {
+ return min(ImageFile::strToInt(ini_get('post_max_size')),
+ ImageFile::strToInt(ini_get('upload_max_filesize')),
+ ImageFile::strToInt(ini_get('memory_limit')));
+ }
+
+ static function strToInt($str)
+ {
+ $unit = substr($str, -1);
+ $num = substr($str, 0, -1);
+
+ switch(strtoupper($unit)){
+ case 'G':
+ $num *= 1024;
+ case 'M':
+ $num *= 1024;
+ case 'K':
+ $num *= 1024;
+ }
+
+ return $num;
+ }
+}
+
+//PHP doesn't (as of 2/24/2010) have an imagecreatefrombmp so conditionally define one
+if(!function_exists('imagecreatefrombmp')){
+ //taken shamelessly from http://www.php.net/manual/en/function.imagecreatefromwbmp.php#86214
+ function imagecreatefrombmp($p_sFile)
+ {
+ // Load the image into a string
+ $file = fopen($p_sFile,"rb");
+ $read = fread($file,10);
+ while(!feof($file)&&($read<>""))
+ $read .= fread($file,1024);
+
+ $temp = unpack("H*",$read);
+ $hex = $temp[1];
+ $header = substr($hex,0,108);
+
+ // Process the header
+ // Structure: http://www.fastgraph.com/help/bmp_header_format.html
+ if (substr($header,0,4)=="424d")
+ {
+ // Cut it in parts of 2 bytes
+ $header_parts = str_split($header,2);
+
+ // Get the width 4 bytes
+ $width = hexdec($header_parts[19].$header_parts[18]);
+
+ // Get the height 4 bytes
+ $height = hexdec($header_parts[23].$header_parts[22]);
+
+ // Unset the header params
+ unset($header_parts);
+ }
+
+ // Define starting X and Y
+ $x = 0;
+ $y = 1;
+
+ // Create newimage
+ $image = imagecreatetruecolor($width,$height);
+
+ // Grab the body from the image
+ $body = substr($hex,108);
+
+ // Calculate if padding at the end-line is needed
+ // Divided by two to keep overview.
+ // 1 byte = 2 HEX-chars
+ $body_size = (strlen($body)/2);
+ $header_size = ($width*$height);
+
+ // Use end-line padding? Only when needed
+ $usePadding = ($body_size>($header_size*3)+4);
+
+ // Using a for-loop with index-calculation instaid of str_split to avoid large memory consumption
+ // Calculate the next DWORD-position in the body
+ for ($i=0;$i<$body_size;$i+=3)
+ {
+ // Calculate line-ending and padding
+ if ($x>=$width)
+ {
+ // If padding needed, ignore image-padding
+ // Shift i to the ending of the current 32-bit-block
+ if ($usePadding)
+ $i += $width%4;
+
+ // Reset horizontal position
+ $x = 0;
+
+ // Raise the height-position (bottom-up)
+ $y++;
+
+ // Reached the image-height? Break the for-loop
+ if ($y>$height)
+ break;
+ }
+
+ // Calculation of the RGB-pixel (defined as BGR in image-data)
+ // Define $i_pos as absolute position in the body
+ $i_pos = $i*2;
+ $r = hexdec($body[$i_pos+4].$body[$i_pos+5]);
+ $g = hexdec($body[$i_pos+2].$body[$i_pos+3]);
+ $b = hexdec($body[$i_pos].$body[$i_pos+1]);
+
+ // Calculate and draw the pixel
+ $color = imagecolorallocate($image,$r,$g,$b);
+ imagesetpixel($image,$x,$height-$y,$color);
+
+ // Raise the horizontal position
+ $x++;
+ }
+
+ // Unset the body / free the memory
+ unset($body);
+
+ // Return image-object
+ return $image;
+ }
+}
projects / quix0rs-gnu-social.git / blobdiff