/
watermark.php
101 lines (84 loc) · 2.88 KB
/
watermark.php
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<?php
if(isset($_FILES['image_file']))
{
$max_size = 800; //Tamanho Max. em Pixel da imagem
$destination_folder = '/';
$watermark_png_file = 'watermark.png'; //Endereço da WaterMask
$image_name = $_FILES['image_file']['name'];
$image_size = $_FILES['image_file']['size'];
$image_temp = $_FILES['image_file']['tmp_name'];
$image_type = $_FILES['image_file']['type'];
switch(strtolower($image_type)){ // Determina o tipo da imagem
//Cria uma nova imagem
case 'image/png':
$image_resource = imagecreatefrompng($image_temp);
break;
case 'image/gif':
$image_resource = imagecreatefromgif($image_temp);
break;
case 'image/jpeg': case 'image/pjpeg':
$image_resource = imagecreatefromjpeg($image_temp);
break;
default:
$image_resource = false;
}
if($image_resource){
//Copie e redimensiona parte de uma imagem com nova resolução
list($img_width, $img_height) = getimagesize($image_temp);
//Constrói um tamanho proporcional de nova imagem
$image_scale = min($max_size / $img_width, $max_size / $img_height);
$new_image_width = ceil($image_scale * $img_width);
$new_image_height = ceil($image_scale * $img_height);
$new_canvas = imagecreatetruecolor($new_image_width , $new_image_height);
$padding = 5;
if(imagecopyresampled($new_canvas, $image_resource , 0, 0, 0, 0, $new_image_width, $new_image_height, $img_width, $img_height))
{
if(!is_dir($destination_folder)){
mkdir($destination_folder);//Cria o diretório caso não exista
}
$watermark = imagecreatefrompng($watermark_png_file); //Imagem da WaterMask
// Posição da WaterMask
$dest_x = $new_image_width - imagesx($watermark) - $padding;
$dest_y = $new_image_height - imagesy($watermark) - $padding;
imagecopy($new_canvas, $watermark, $dest_x, $dest_y, 0, 0, imagesx($watermark), imagesy($watermark)); //merge image
//Saída de imagem diretamente no navegador.
header('Content-Type: image/jpeg');
imagejpeg($new_canvas, NULL , 90);
//Caso queira salvar a imagem em algum diretório descomente o código abaixo.
//imagejpeg($new_canvas, $destination_folder.'/'.$image_name , 90);
//Libera a memoria
imagedestroy($new_canvas);
imagedestroy($image_resource);
die();
}
}
}
?>
<!DOCTYPE HTML>
<html>
<head>
<style type="text/css">
#upload-form {
padding: 20px;
background: #F7F7F7;
border: 1px solid #CCC;
margin-left: auto;
margin-right: auto;
width: 400px;
}
#upload-form input[type=file] {
border: 1px solid #ddd;
padding: 4px;
}
#upload-form input[type=submit] {
height: 30px;
}
</style>
</head>
<body>
<form action="" id="upload-form" method="post" enctype="multipart/form-data">
<input type="file" name="image_file" />
<input type="submit" value="Enviar imagem" />
</form>
</body>
</html>