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<?php
class Upload {
public static function compress_image($name, $type) {
if ( preg_match('/jpg|jpeg/', $type) ) {
$src_img = imagecreatefromjpeg($name);
}
if ( preg_match('/png/', $type) ) {
$src_img = imagecreatefrompng($name);
}
if ( preg_match('/gif/', $type) ) {
$src_img = imagecreatefromgif($name);
}
if ( preg_match("/png/", $type) ) {
//imagepng($src_img, $name, 8);
imagepng($src_img, $name);
} else {
//imagejpeg($src_img, $name, 80);
imagejpeg($src_img, $name);
}
}
public static function resize_image($name, $filename, $new_w, $new_h, $type) {
$system = explode('.', $name);
if ( preg_match('/jpg|jpeg/', $type) ) {
$src_img = imagecreatefromjpeg($name);
}
if ( preg_match('/png/', $type) ) {
$src_img = imagecreatefrompng($name);
}
if ( preg_match('/gif/', $type) ) {
$src_img = imagecreatefromgif($name);
}
$old_x = imageSX($src_img);
$old_y = imageSY($src_img);
// if ( $old_x > $old_y ) {
$thumb_w = $new_w;
$thumb_h = $old_y * ($new_h / $old_x);
// }
/* if ( $old_x < $old_y ) {
$thumb_w = $old_x * ($new_w / $old_y);
$thumb_h = $new_h;
}*/
if ( $old_x == $old_y ) {
$thumb_w = $new_w;
$thumb_h = $new_h;
}
$dst_img = ImageCreateTrueColor($thumb_w, $thumb_h);
// ==== SET jika image Transparent =======
imagealphablending($dst_img, false);
imagesavealpha($dst_img,true);
$transparent = imagecolorallocatealpha($dst_img, 255, 255, 255, 127);
imagefilledrectangle($dst_img, 0, 0, $thumb_w, $thumb_h, $transparent);
// ==========================
imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $thumb_w, $thumb_h, $old_x, $old_y);
if ( preg_match("/png/", $type) ) {
//imagepng($dst_img, $filename, 8);
imagepng($dst_img, $filename);
} else {
//imagejpeg($dst_img, $filename, 80);
imagejpeg($dst_img, $filename);
}
imagedestroy($dst_img);
imagedestroy($src_img);
}
public static function crop_image($name, $filename, $x1, $x2, $y1, $y2, $type) {
$system = explode('.', $name);
if ( preg_match('/jpg|jpeg/', $type) ) {
$src_img = imagecreatefromjpeg($name);
}
if ( preg_match('/png/', $type) ) {
$src_img = imagecreatefrompng($name);
}
if ( preg_match('/gif/', $type) ) {
$src_img = imagecreatefromgif($name);
}
$old_x = imageSX($src_img);
$old_y = imageSY($src_img);
$x1 = ($x1 > 0 && $x1 < $old_x)?$x1:$old_x;
$x2 = ($x2 > 0 && $x2 < $old_x)?$x2:$old_x;
$y1 = ($y1 > 0 && $y1 < $old_y)?$y1:$old_y;
$y2 = ($y2 > 0 && $y2 < $old_y)?$y2:$old_y;
$w = $x2 - $x1; //hitung lebar gambar baru
$h = $y2 - $y1; //hitung tinggi gambar baru
// ==== SET jika image Transparent =======
//imagecolortransparent($tmp, imagecolorallocatealpha($tmp, 0, 0, 0, 127));
$dst_img = ImageCreateTrueColor($w, $h);
imagealphablending($dst_img, false);
imagesavealpha($dst_img,true);
$transparent = imagecolorallocatealpha($dst_img, 255, 255, 255, 127);
imagefilledrectangle($dst_img, 0, 0, $w, $h, $transparent);
imagecopyresampled($dst_img, $src_img,0 ,0 ,$x1, $y1, $w, $h, $w, $h);
// ==========================
if ( preg_match("/png/", $type) ) {
imagepng($dst_img, $filename);
} elseif( preg_match("/gif/", $type) ) {
imagegif($dst_img, $filename);
} else {
imagejpeg($dst_img, $filename);
}
imagedestroy($dst_img);
imagedestroy($src_img);
}
}