diff --git a/src/applications/files/PhabricatorImageTransformer.php b/src/applications/files/PhabricatorImageTransformer.php index f29ce97835..71f07a231e 100644 --- a/src/applications/files/PhabricatorImageTransformer.php +++ b/src/applications/files/PhabricatorImageTransformer.php @@ -1,400 +1,325 @@ applyMemeToFile($file, $upper_text, $lower_text); return PhabricatorFile::newFromFileData( $image, array( 'name' => 'meme-'.$file->getName(), 'ttl.relative' => phutil_units('24 hours in seconds'), 'canCDN' => true, )); } - public function executeConpherenceTransform( - PhabricatorFile $file, - $top, - $left, - $width, - $height) { - - $image = $this->crasslyCropTo( - $file, - $top, - $left, - $width, - $height); - - return PhabricatorFile::newFromFileData( - $image, - array( - 'name' => 'conpherence-'.$file->getName(), - 'profile' => true, - 'canCDN' => true, - )); - } - - private function crasslyCropTo(PhabricatorFile $file, $top, $left, $w, $h) { - $data = $file->loadFileData(); - $src = imagecreatefromstring($data); - $dst = $this->getBlankDestinationFile($w, $h); - - $scale = self::getScaleForCrop($file, $w, $h); - $orig_x = $left / $scale; - $orig_y = $top / $scale; - $orig_w = $w / $scale; - $orig_h = $h / $scale; - - imagecopyresampled( - $dst, - $src, - 0, 0, - $orig_x, $orig_y, - $w, $h, - $orig_w, $orig_h); - - return self::saveImageDataInAnyFormat($dst, $file->getMimeType()); - } - - private function getBlankDestinationFile($dx, $dy) { - $dst = imagecreatetruecolor($dx, $dy); - imagesavealpha($dst, true); - imagefill($dst, 0, 0, imagecolorallocatealpha($dst, 255, 255, 255, 127)); - - return $dst; - } - - public static function getScaleForCrop( - PhabricatorFile $file, - $des_width, - $des_height) { - - $metadata = $file->getMetadata(); - $width = $metadata[PhabricatorFile::METADATA_IMAGE_WIDTH]; - $height = $metadata[PhabricatorFile::METADATA_IMAGE_HEIGHT]; - - if ($height < $des_height) { - $scale = $height / $des_height; - } else if ($width < $des_width) { - $scale = $width / $des_width; - } else { - $scale_x = $des_width / $width; - $scale_y = $des_height / $height; - $scale = max($scale_x, $scale_y); - } - - return $scale; - } - private function applyMemeToFile( PhabricatorFile $file, $upper_text, $lower_text) { $data = $file->loadFileData(); $img_type = $file->getMimeType(); $imagemagick = PhabricatorEnv::getEnvConfig('files.enable-imagemagick'); if ($img_type != 'image/gif' || $imagemagick == false) { return $this->applyMemeTo( $data, $upper_text, $lower_text, $img_type); } $data = $file->loadFileData(); $input = new TempFile(); Filesystem::writeFile($input, $data); list($out) = execx('convert %s info:', $input); $split = phutil_split_lines($out); if (count($split) > 1) { return $this->applyMemeWithImagemagick( $input, $upper_text, $lower_text, count($split), $img_type); } else { return $this->applyMemeTo($data, $upper_text, $lower_text, $img_type); } } private function applyMemeTo( $data, $upper_text, $lower_text, $mime_type) { $img = imagecreatefromstring($data); // Some PNGs have color palettes, and allocating the dark border color // fails and gives us whatever's first in the color table. Copy the image // to a fresh truecolor canvas before working with it. $truecolor = imagecreatetruecolor(imagesx($img), imagesy($img)); imagecopy($truecolor, $img, 0, 0, 0, 0, imagesx($img), imagesy($img)); $img = $truecolor; $phabricator_root = dirname(phutil_get_library_root('phabricator')); $font_root = $phabricator_root.'/resources/font/'; $font_path = $font_root.'tuffy.ttf'; if (Filesystem::pathExists($font_root.'impact.ttf')) { $font_path = $font_root.'impact.ttf'; } $text_color = imagecolorallocate($img, 255, 255, 255); $border_color = imagecolorallocatealpha($img, 0, 0, 0, 110); $border_width = 4; $font_max = 200; $font_min = 5; for ($i = $font_max; $i > $font_min; $i--) { $fit = $this->doesTextBoundingBoxFitInImage( $img, $upper_text, $i, $font_path); if ($fit['doesfit']) { $x = ($fit['imgwidth'] - $fit['txtwidth']) / 2; $y = $fit['txtheight'] + 10; $this->makeImageWithTextBorder($img, $i, $x, $y, $text_color, $border_color, $border_width, $font_path, $upper_text); break; } } for ($i = $font_max; $i > $font_min; $i--) { $fit = $this->doesTextBoundingBoxFitInImage($img, $lower_text, $i, $font_path); if ($fit['doesfit']) { $x = ($fit['imgwidth'] - $fit['txtwidth']) / 2; $y = $fit['imgheight'] - 10; $this->makeImageWithTextBorder( $img, $i, $x, $y, $text_color, $border_color, $border_width, $font_path, $lower_text); break; } } return self::saveImageDataInAnyFormat($img, $mime_type); } private function makeImageWithTextBorder($img, $font_size, $x, $y, $color, $stroke_color, $bw, $font, $text) { $angle = 0; $bw = abs($bw); for ($c1 = $x - $bw; $c1 <= $x + $bw; $c1++) { for ($c2 = $y - $bw; $c2 <= $y + $bw; $c2++) { if (!(($c1 == $x - $bw || $x + $bw) && $c2 == $y - $bw || $c2 == $y + $bw)) { $bg = imagettftext($img, $font_size, $angle, $c1, $c2, $stroke_color, $font, $text); } } } imagettftext($img, $font_size, $angle, $x , $y, $color , $font, $text); } private function doesTextBoundingBoxFitInImage($img, $text, $font_size, $font_path) { // Default Angle = 0 $angle = 0; $bbox = imagettfbbox($font_size, $angle, $font_path, $text); $text_height = abs($bbox[3] - $bbox[5]); $text_width = abs($bbox[0] - $bbox[2]); return array( 'doesfit' => ($text_height * 1.05 <= imagesy($img) / 2 && $text_width * 1.05 <= imagesx($img)), 'txtwidth' => $text_width, 'txtheight' => $text_height, 'imgwidth' => imagesx($img), 'imgheight' => imagesy($img), ); } private function applyMemeWithImagemagick( $input, $above, $below, $count, $img_type) { $output = new TempFile(); $future = new ExecFuture( 'convert %s -coalesce +adjoin %s_%s', $input, $input, '%09d'); $future->setTimeout(10)->resolvex(); $output_files = array(); for ($ii = 0; $ii < $count; $ii++) { $frame_name = sprintf('%s_%09d', $input, $ii); $output_name = sprintf('%s_%09d', $output, $ii); $output_files[] = $output_name; $frame_data = Filesystem::readFile($frame_name); $memed_frame_data = $this->applyMemeTo( $frame_data, $above, $below, $img_type); Filesystem::writeFile($output_name, $memed_frame_data); } $future = new ExecFuture('convert -loop 0 %Ls %s', $output_files, $output); $future->setTimeout(10)->resolvex(); return Filesystem::readFile($output); } /* -( Saving Image Data )-------------------------------------------------- */ /** * Save an image resource to a string representation suitable for storage or * transmission as an image file. * * Optionally, you can specify a preferred MIME type like `"image/png"`. * Generally, you should specify the MIME type of the original file if you're * applying file transformations. The MIME type may not be honored if * Phabricator can not encode images in the given format (based on available * extensions), but can save images in another format. * * @param resource GD image resource. * @param string? Optionally, preferred mime type. * @return string Bytes of an image file. * @task save */ public static function saveImageDataInAnyFormat($data, $preferred_mime = '') { $preferred = null; switch ($preferred_mime) { case 'image/gif': $preferred = self::saveImageDataAsGIF($data); break; case 'image/png': $preferred = self::saveImageDataAsPNG($data); break; } if ($preferred !== null) { return $preferred; } $data = self::saveImageDataAsJPG($data); if ($data !== null) { return $data; } $data = self::saveImageDataAsPNG($data); if ($data !== null) { return $data; } $data = self::saveImageDataAsGIF($data); if ($data !== null) { return $data; } throw new Exception(pht('Failed to save image data into any format.')); } /** * Save an image in PNG format, returning the file data as a string. * * @param resource GD image resource. * @return string|null PNG file as a string, or null on failure. * @task save */ private static function saveImageDataAsPNG($image) { if (!function_exists('imagepng')) { return null; } // NOTE: Empirically, the highest compression level (9) seems to take // up to twice as long as the default compression level (6) but produce // only slightly smaller files (10% on avatars, 3% on screenshots). ob_start(); $result = imagepng($image, null, 6); $output = ob_get_clean(); if (!$result) { return null; } return $output; } /** * Save an image in GIF format, returning the file data as a string. * * @param resource GD image resource. * @return string|null GIF file as a string, or null on failure. * @task save */ private static function saveImageDataAsGIF($image) { if (!function_exists('imagegif')) { return null; } ob_start(); $result = imagegif($image); $output = ob_get_clean(); if (!$result) { return null; } return $output; } /** * Save an image in JPG format, returning the file data as a string. * * @param resource GD image resource. * @return string|null JPG file as a string, or null on failure. * @task save */ private static function saveImageDataAsJPG($image) { if (!function_exists('imagejpeg')) { return null; } ob_start(); $result = imagejpeg($image); $output = ob_get_clean(); if (!$result) { return null; } return $output; } }