+ 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) {
+
+ $outname = Avatar::filename($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;
+ case IMAGETYPE_JPEG:
+ $image_src = imagecreatefromjpeg($this->filepath);
+ break;
+ case IMAGETYPE_PNG:
+ $image_src = imagecreatefrompng($this->filepath);
+ break;
+ default:
+ throw new Exception(_('Unknown file type'));
+ return;
+ }
+
+ $image_dest = imagecreatetruecolor($size, $size);
+
+ if ($this->type == IMAGETYPE_GIF || $this->type == IMAGETYPE_PNG) {
+
+ $transparent_idx = imagecolortransparent($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);
+
+ $outname = Avatar::filename($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;