/**
* Moves an image file (resizing is possible)
*
* @param string $source_file Path of the source file
* @param string $target_file Path of the target file
* @param int $resize_width Width to resize
* @param int $resize_height Height to resize
* @param string $target_type If $target_type is set (gif, jpg, png, bmp), result image will be saved as target type
* @param string $thumbnail_type Thumbnail type(crop, ratio)
* @return bool true: success, false: failed
**/
function createImageFile($source_file, $target_file, $resize_width = 0, $resize_height = 0, $target_type = '', $thumbnail_type = 'crop')
{
$source_file = FileHandler::getRealPath($source_file);
$target_file = FileHandler::getRealPath($target_file);
if (!file_exists($source_file)) {
return;
}
if (!$resize_width) {
$resize_width = 100;
}
if (!$resize_height) {
$resize_height = $resize_width;
}
// retrieve source image's information
$imageInfo = getimagesize($source_file);
if (!FileHandler::checkMemoryLoadImage($imageInfo)) {
return false;
}
list($width, $height, $type, $attrs) = $imageInfo;
if ($width < 1 || $height < 1) {
return;
}
switch ($type) {
case '1':
$type = 'gif';
break;
case '2':
$type = 'jpg';
break;
case '3':
$type = 'png';
break;
case '6':
$type = 'bmp';
break;
default:
return;
break;
}
// if original image is larger than specified size to resize, calculate the ratio
if ($resize_width > 0 && $width >= $resize_width) {
$width_per = $resize_width / $width;
} else {
$width_per = 1;
}
if ($resize_height > 0 && $height >= $resize_height) {
$height_per = $resize_height / $height;
} else {
$height_per = 1;
}
if ($thumbnail_type == 'ratio') {
if ($width_per > $height_per) {
$per = $height_per;
} else {
$per = $width_per;
}
$resize_width = $width * $per;
$resize_height = $height * $per;
} else {
if ($width_per < $height_per) {
$per = $height_per;
} else {
$per = $width_per;
}
}
if (!$per) {
$per = 1;
}
// get type of target file
if (!$target_type) {
$target_type = $type;
}
$target_type = strtolower($target_type);
// create temporary image with target size
if (function_exists('imagecreatetruecolor')) {
$thumb = imagecreatetruecolor($resize_width, $resize_height);
} else {
if (function_exists('imagecreate')) {
$thumb = imagecreate($resize_width, $resize_height);
} else {
return false;
}
}
if (!$thumb) {
return false;
}
$white = imagecolorallocate($thumb, 255, 255, 255);
imagefilledrectangle($thumb, 0, 0, $resize_width - 1, $resize_height - 1, $white);
// create temporary image having original type
switch ($type) {
case 'gif':
if (!function_exists('imagecreatefromgif')) {
return false;
}
$source = @imagecreatefromgif($source_file);
break;
// jpg
// jpg
case 'jpeg':
case 'jpg':
if (!function_exists('imagecreatefromjpeg')) {
return false;
}
$source = @imagecreatefromjpeg($source_file);
break;
// png
// png
case 'png':
if (!function_exists('imagecreatefrompng')) {
return false;
}
$source = @imagecreatefrompng($source_file);
break;
// bmp
// bmp
case 'wbmp':
case 'bmp':
if (!function_exists('imagecreatefromwbmp')) {
return false;
}
$source = @imagecreatefromwbmp($source_file);
break;
default:
return;
}
// resize original image and put it into temporary image
$new_width = (int) ($width * $per);
$new_height = (int) ($height * $per);
if ($thumbnail_type == 'crop') {
$x = (int) ($resize_width / 2 - $new_width / 2);
$y = (int) ($resize_height / 2 - $new_height / 2);
} else {
$x = 0;
$y = 0;
}
if ($source) {
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);
}
} else {
return false;
}
// create directory
$path = dirname($target_file);
if (!is_dir($path)) {
FileHandler::makeDir($path);
}
// write into the file
switch ($target_type) {
case 'gif':
if (!function_exists('imagegif')) {
return false;
}
$output = imagegif($thumb, $target_file);
break;
case 'jpeg':
case 'jpg':
if (!function_exists('imagejpeg')) {
return false;
}
$output = imagejpeg($thumb, $target_file, 100);
break;
case 'png':
if (!function_exists('imagepng')) {
return false;
}
$output = imagepng($thumb, $target_file, 9);
break;
case 'wbmp':
case 'bmp':
if (!function_exists('imagewbmp')) {
return false;
}
$output = imagewbmp($thumb, $target_file, 100);
break;
}
imagedestroy($thumb);
imagedestroy($source);
if (!$output) {
return false;
}
@chmod($target_file, 0644);
return true;
}
