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Implement auto-rotation of uploaded images

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This commit is contained in:
Kijin Sung 2019-08-01 15:25:12 +09:00
parent f3761fd934
commit 8c242327a8
7 changed files with 141 additions and 61 deletions
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131
classes/file/FileHandler.class.php
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@ -480,9 +480,10 @@ class FileHandler
* @param string $target_type If $target_type is set (gif, jpg, png, bmp), result image will be saved as target type
* @param string $thumbnail_type Thumbnail type(crop, ratio)
* @param int $quality Compression ratio (0~9)
* @param int $rotate Rotation degrees (0~360)
* @return bool TRUE: success, FALSE: failed
*/
public static function createImageFile($source_file, $target_file, $resize_width = 0, $resize_height = 0, $target_type = '', $thumbnail_type = 'crop', $quality = 100)
public static function createImageFile($source_file, $target_file, $resize_width = 0, $resize_height = 0, $target_type = '', $thumbnail_type = 'crop', $quality = 100, $rotate = 0)
{
// check params
if (($source_file = self::exists($source_file)) === FALSE)
@ -544,49 +545,6 @@ class FileHandler
}
$target_type = strtolower($target_type);
// if original image is larger than specified size to resize, calculate the ratio
$width_per = ($resize_width > 0 && $width >= $resize_width) ? $resize_width / $width : 1;
$height_per = ($resize_height > 0 && $height >= $resize_height) ? $resize_height / $height : 1;
$per = NULL;
if($thumbnail_type == 'ratio')
{
$per = ($width_per > $height_per) ? $height_per : $width_per;
$resize_width = $width * $per;
$resize_height = $height * $per;
}
else
{
$per = ($width_per < $height_per) ? $height_per : $width_per;
}
// create temporary image with target size
$thumb = NULL;
if(function_exists('imagecreateTRUEcolor'))
{
$thumb = imagecreateTRUEcolor($resize_width, $resize_height);
}
else if(function_exists('imagecreate'))
{
$thumb = imagecreate($resize_width, $resize_height);
}
if(!$thumb)
{
return FALSE;
}
if($target_type == 'png' && function_exists('imagecolorallocatealpha') && function_exists('imagesavealpha') && function_exists('imagealphablending'))
{
imagefill($thumb, 0, 0, imagecolorallocatealpha($thumb, 0, 0, 0, 127));
imagesavealpha($thumb, TRUE);
imagealphablending($thumb, TRUE);
}
else
{
imagefilledrectangle($thumb, 0, 0, $resize_width - 1, $resize_height - 1, imagecolorallocate($thumb, 255, 255, 255));
}
// create temporary image having original type
$source = NULL;
switch($type)
@ -636,27 +594,86 @@ class FileHandler
return FALSE;
}
// resize original image and put it into temporary image
$new_width = (int) ($width * $per);
$new_height = (int) ($height * $per);
$x = 0;
$y = 0;
if($thumbnail_type == 'crop')
// Rotate image
if ($rotate)
{
$x = (int) ($resize_width / 2 - $new_width / 2);
$y = (int) ($resize_height / 2 - $new_height / 2);
$source = imagerotate($source, $rotate, 0);
$width = imagesx($source);
$height = imagesy($source);
}
if(function_exists('imagecopyresampled'))
// If resize not needed, skip thumbnail generation
if ($width == $resize_width && $height == $resize_height)
{
imagecopyresampled($thumb, $source, $x, $y, 0, 0, $new_width, $new_height, $width, $height);
$thumb = &$source;
}
else
{
imagecopyresized($thumb, $source, $x, $y, 0, 0, $new_width, $new_height, $width, $height);
}
// if original image is larger than specified size to resize, calculate the ratio
$width_per = ($resize_width > 0 && $width >= $resize_width) ? $resize_width / $width : 1;
$height_per = ($resize_height > 0 && $height >= $resize_height) ? $resize_height / $height : 1;
$per = NULL;
if($thumbnail_type == 'ratio')
{
$per = ($width_per > $height_per) ? $height_per : $width_per;
$resize_width = $width * $per;
$resize_height = $height * $per;
}
else
{
$per = ($width_per < $height_per) ? $height_per : $width_per;
}
// create temporary image with target size
$thumb = NULL;
if(function_exists('imagecreateTRUEcolor'))
{
$thumb = imagecreateTRUEcolor($resize_width, $resize_height);
}
else if(function_exists('imagecreate'))
{
$thumb = imagecreate($resize_width, $resize_height);
}
if(!$thumb)
{
return FALSE;
}
if($target_type == 'png' && function_exists('imagecolorallocatealpha') && function_exists('imagesavealpha') && function_exists('imagealphablending'))
{
imagefill($thumb, 0, 0, imagecolorallocatealpha($thumb, 0, 0, 0, 127));
imagesavealpha($thumb, TRUE);
imagealphablending($thumb, TRUE);
}
else
{
imagefilledrectangle($thumb, 0, 0, $resize_width - 1, $resize_height - 1, imagecolorallocate($thumb, 255, 255, 255));
}
// resize original image and put it into temporary image
$new_width = (int) ($width * $per);
$new_height = (int) ($height * $per);
$x = 0;
$y = 0;
if($thumbnail_type == 'crop')
{
$x = (int) ($resize_width / 2 - $new_width / 2);
$y = (int) ($resize_height / 2 - $new_height / 2);
}
if(function_exists('imagecopyresampled'))
{
imagecopyresampled($thumb, $source, $x, $y, 0, 0, $new_width, $new_height, $width, $height);
}
else
{
imagecopyresized($thumb, $source, $x, $y, 0, 0, $new_width, $new_height, $width, $height);
}
}
// create directory
self::makeDir(dirname($target_file));