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Vous êtes ici: Support du Web > Forum > Sites Web > PHP/MYSQL > crop image

crop image

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Pages: 1
Auteur Message
jacque99
04/11/2010 à 17:41:15
jacque99
Membre
 Bonjour tout le monde,
Au fait, j'ai un scripte qui permet de faire le crop image, il marche bien.
J'ai essayé de faire une modification pour permettre l'insertion d'un nouveau nom, mais ça marche pas toujours.
Voici le script, et il suffit de créer un répertoire nommé
[CODE]
<?php


//Constants
//You can alter these options
$upload_dir = "upload_pic"; // The directory for the images to be saved in
$upload_path = $upload_dir."/"; // The path to where the image will be saved
$large_image_name = "resized_pic.jpg"; // New name of the large image


//$thumb_image_name = "thumbnail_pic.jpg"; // New name of the thumbnail image


$thumb = $_POST["thumb"];

$thumb_image_name=$thumb.".jpg";



$max_file = "1148576"; // Approx 1MB
$max_width = "500"; // Max width allowed for the large image
$thumb_width = "100"; // Width of thumbnail image
$thumb_height = "100"; // Height of thumbnail image

//Image functions
//You do not need to alter these functions
function resizeImage($image,$width,$height,$scale) {
$newImageWidth = ceil($width * $scale);
$newImageHeight = ceil($height * $scale);
$newImage = imagecreatetruecolor($newImageWidth,$newImageHeight);
$source = imagecreatefromjpeg($image);
imagecopyresampled($newImage,$source,0,0,0,0,$newImageWidth,$newImageHeight,$width,$height);
imagejpeg($newImage,$image,90);
chmod($image, 0777);
return $image;
}
//You do not need to alter these functions
function resizeThumbnailImage($thumb_image_name, $image, $width, $height, $start_width, $start_height, $scale){
$newImageWidth = ceil($width * $scale);
$newImageHeight = ceil($height * $scale);
$newImage = imagecreatetruecolor($newImageWidth,$newImageHeight);
$source = imagecreatefromjpeg($image);
imagecopyresampled($newImage,$source,0,0,$start_width,$start_height,$newImageWidth,$newImageHeight,$width,$height);
imagejpeg($newImage,$thumb_image_name,90);
chmod($thumb_image_name, 0777);
return $thumb_image_name;
}
//You do not need to alter these functions
function getHeight($image) {
$sizes = getimagesize($image);
$height = $sizes[1];
return $height;
}
//You do not need to alter these functions
function getWidth($image) {
$sizes = getimagesize($image);
$width = $sizes[0];
return $width;
}

//Image Locations
$large_image_location = $upload_path.$large_image_name;
$thumb_image_location = $upload_path.$thumb_image_name;

//Create the upload directory with the right permissions if it doesn't exist
if(!is_dir($upload_dir)){
mkdir($upload_dir, 0777);
chmod($upload_dir, 0777);
}

//Check to see if any images with the same names already exist
if (file_exists($large_image_location)){
if(file_exists($thumb_image_location)){
$thumb_photo_exists = "<img src=\"".$upload_path.$thumb_image_name."\" alt=\"Thumbnail Image\"/>";
}else{
$thumb_photo_exists = "";
}
$large_photo_exists = "<img src=\"".$upload_path.$large_image_name."\" alt=\"Large Image\"/>";
} else {
$large_photo_exists = "";
$thumb_photo_exists = "";
}

if (isset($_POST["upload"])) {
//Get the file information
$userfile_name = $_FILES['image']['name'];
$userfile_tmp = $_FILES['image']['tmp_name'];
$userfile_size = $_FILES['image']['size'];
$filename = basename($_FILES['image']['name']);
$file_ext = substr($filename, strrpos($filename, '.') + 1);
//$thumb = $_POST["thumb"];




//Only process if the file is a JPG and below the allowed limit
if((!empty($_FILES["image"])) && ($_FILES['image']['error'] == 0)) {
if (($file_ext!="jpg") && ($userfile_size > $max_file)) {
$error= "ONLY jpeg images under 1MB are accepted for upload";
}
}else{
$error= "Select a jpeg image for upload";
}
//Everything is ok, so we can upload the image.
if (strlen($error)==0){

if (isset($_FILES['image']['name'])){

move_uploaded_file($userfile_tmp, $large_image_location);
chmod($large_image_location, 0777);

$width = getWidth($large_image_location);
$height = getHeight($large_image_location);
//Scale the image if it is greater than the width set above
if ($width > $max_width){
$scale = $max_width/$width;
$uploaded = resizeImage($large_image_location,$width,$height,$scale);
}else{
$scale = 1;
$uploaded = resizeImage($large_image_location,$width,$height,$scale);
}
//Delete the thumbnail file so the user can create a new one
if (file_exists($thumb_image_location)) {
unlink($thumb_image_location);
}
}

//Refresh the page to show the new uploaded image
header("location:".$_SERVER["PHP_SELF"]);
exit();
}
}

if (isset($_POST["upload_thumbnail"]) && strlen($large_photo_exists)>0) {
//Get the new coordinates to crop the image.
$x1 = $_POST["x1"];
$y1 = $_POST["y1"];
$x2 = $_POST["x2"];
$y2 = $_POST["y2"];
$w = $_POST["w"];
$h = $_POST["h"];
$thumb = $_POST["thumb"];
//Scale the image to the thumb_width set above
$scale = $thumb_width/$w;
$cropped = resizeThumbnailImage($thumb_image_location, $large_image_location,$w,$h,$x1,$y1,$scale);
//Reload the page again to view the thumbnail
header("location:".$_SERVER["PHP_SELF"]);
exit();
}

if ($_GET['a']=="delete"){
if (file_exists($large_image_location)) {
unlink($large_image_location);
}
if (file_exists($thumb_image_location)) {
unlink($thumb_image_location);
}
header("location:".$_SERVER["PHP_SELF"]);
exit();
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />

WebMotionUK - PHP &amp; Jquery image upload &amp; crop

<script type="text/javascript" src="http://mestestes.eu/js/jquery-pack.js"></script>
<script type="text/javascript" src="http://mestestes.eu/js/jquery.imgareaselect-0.3.min.js"></script>
</head>
<body>


<?php
//Only display the javacript if an image has been uploaded
if(strlen($large_photo_exists)>0){
$current_large_image_width = getWidth($large_image_location);
$current_large_image_height = getHeight($large_image_location);?>
<script type="text/javascript">
function preview(img, selection) {
var scaleX = <?php echo $thumb_width;?> / selection.width;
var scaleY = <?php echo $thumb_height;?> / selection.height;

$('#thumbnail + div > img').css({
width: Math.round(scaleX * <?php echo $current_large_image_width;?>) + 'px',
height: Math.round(scaleY * <?php echo $current_large_image_height;?>) + 'px',
marginLeft: '-' + Math.round(scaleX * selection.x1) + 'px',
marginTop: '-' + Math.round(scaleY * selection.y1) + 'px'
});
$('#x1').val(selection.x1);
$('#y1').val(selection.y1);
$('#x2').val(selection.x2);
$('#y2').val(selection.y2);
$('#w').val(selection.width);
$('#h').val(selection.height);
}

$(document).ready(function () {
$('#save_thumb').click(function() {
var x1 = $('#x1').val();
var y1 = $('#y1').val();
var x2 = $('#x2').val();
var y2 = $('#y2').val();
var w = $('#w').val();
var h = $('#h').val();
if(x1=="" || y1=="" || x2=="" || y2=="" || w=="" || h==""){
alert("You must make a selection first");
return false;
}else{
return true;
}
});
});

$(window).load(function () {
$('#thumbnail').imgAreaSelect({ aspectRatio: '1:1', onSelectChange: preview });
});

</script>
<?php }?>
<h1>Photo Upload and Crop</h1>
<?php
//Display error message if there are any
if(strlen($error)>0){
echo "<ul><li><strong>Error!</strong></li><li>".$error."</li></ul>";
}
if(strlen($large_photo_exists)>0 && strlen($thumb_photo_exists)>0){
echo "<p><strong>NOTE:</strong> If the thumbnail image looks the same as the previous one, just hit refresh a couple of times.</p>";
echo $large_photo_exists."&nbsp;".$thumb_photo_exists;
echo "<p><a href=\"".$_SERVER["PHP_SELF"]."?a=delete\">Delete Images</a></p>";
}else{
if(strlen($large_photo_exists)>0){?>
<h2>Create Thumbnail</h2>
<div align="center">
<img src="<?php echo $upload_path.$large_image_name;?>" style="float: left; margin-right: 10px;" id="thumbnail" alt="Create Thumbnail" />
<div style="float:left; position:relative; overflow:hidden; width:<?php echo $thumb_width;?>px; height:<?php echo $thumb_height;?>px;">
<img src="<?php echo $upload_path.$large_image_name;?>" style="position: relative;" alt="Thumbnail Preview" />
</div>
<br style="clear:both;"/>
<form name="thumbnail" action="<?php echo $_SERVER["PHP_SELF"];?>" method="post">
<input type="hidden" name="x1" value="" id="x1" />
<input type="hidden" name="y1" value="" id="y1" />
<input type="hidden" name="x2" value="" id="x2" />
<input type="hidden" name="y2" value="" id="y2" />
<input type="hidden" name="w" value="" id="w" />
<input type="hidden" name="h" value="" id="h" />
<input type="hidden" name="thumb" value="" id="thumb" />

<input type="submit" name="upload_thumbnail" value="Save Thumbnail" id="save_thumb" />
</form>
</div>
<hr />
<?php } ?>
<h2>Upload Photo</h2>
<form name="photo" enctype="multipart/form-data" action="<?php echo $_SERVER["PHP_SELF"];?>" method="post">
Photo <input type="file" name="image" size="30" /> <br /><br />

Specify the name of 'thumb_image_name' <input type="text" name="thumb"><br /><br />

<input type="submit" name="upload" value="Upload" /><br /><br />
</form>

<?php } ?>

</body>
</html>

[/CODE]
Pages: 1