如何获得可变宽度和宽度使用Jcrop进行裁剪时的高度,并使用PHP GD保存

时间:2012-12-11 15:13:22

标签: php image gd crop jcrop

我有一个应用程序必须裁剪宽度可变的图像高度。但我不知道如何使用php gd(Createimagefromjpeg)函数

在我的代码中我有:

$targ_w = 400;
$targ_h = 400;

这意味着裁剪后的图像将始终获得此宽度和高度。那不是我想要的。我希望,以某种方式裁剪图像并裁剪它,就像我在裁剪区域选择它一样,如下图所示:

cropped image

现在,当我裁剪该图像时,就像在图片中我得到的那样:

square image created

这是一个方形图像,因为我必须给出宽度和高度。但在我拍摄的每张图片上,尺寸都不同。

有没有办法(变量,id等......)这样做?

谢谢:D

编辑:我创建裁剪图片的代码:

<!DOCTYPE>
<html>
<head>
    <title>Cropped Image</title>
</head>
<body>

<?php
SESSION_start();
if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
$targ_w = 400;
$targ_h = 400;
$jpeg_quality = 100;

$src = $_SESSION['target_path'];
$img_r = imagecreatefromjpeg($src);
$dst_r = ImageCreateTrueColor( $targ_w, $targ_h );

imagecopyresampled($dst_r,$img_r,0,0,$_POST['x'],$_POST['y'],
$targ_w,$targ_h,$_POST['w'],$_POST['h']);

header('Content-type: image/jpeg');
imagejpeg($dst_r, 'data/uploads/' . basename($src));
header('Location:'.$src);
exit;
}

?>

</body>
</html>

上传图片的代码:

<!DOCTYPE>
<html>

<head>
    <title>Het Vergeet-mij-nietje</title>
    <link href="style/default.css" REL="stylesheet" TYPE="text/css">
    <script type="text/javascript" src="js/showfunctie.js"></script>
    <script src="js/jquery.min.js"></script>
    <script src="js/jquery.Jcrop.min.js"></script>
    <link rel="stylesheet" href="css/jquery.Jcrop.css" type="text/css" />
</head>

<body>
<center>
    <div id="title">
    <h1><a href="index.php" id="link1">Het "Vergeet-mij-nietje"</a></h1>
    <h3>Upload Systeem</h3>
    </div>

<div id="content1">
    <p><b>Upload hier een afbeelding en druk op upload om hem vervolgens te kunnen bijsnijden.</b></p>
    <form action="uploaded.php" method="post" enctype="multipart/form-data">
        <input type="file" name="filename" />
        <input type="submit" value="Upload" />
    </form>
<br /> <br />

<p align="left"><b>Bekijk hier de gecropte en geuploadde foto's</b></p>


    <p class="album">
        <?php include 'album.php';?>
    </p>

</div>

<div id="copyright">
Copyright &copy; Kees Sonnema & Jan Beetsma
</div>

</body>
</html>

使用JCrop裁剪图像的代码:

<html>
    <head>
    <script src="js/jquery-1.7.2.min.js"></script>
    <script src="js/lightbox.js"></script>  
    <link href="style/css/lightbox.css" rel="stylesheet" />
    </head>
<body>

<?php

$page = $_SERVER['PHP_SELF'];

//settings
$column = 6;

// directories
$base = "data";
$uploads = "thumbs";

// get album
$get_album = $_GET['album'];

if (!$get_album)
{
    echo "<b>Selecteer een album:</b><p />";
    $handle = opendir($base);
    while (($file = readdir($handle))!==FALSE)
    {
        if (is_dir($base."/".$file) && $file != "." && $file !=".." && $file !="$uploads")
        {
            echo "<a href='$page?album=$file'>$file</a><br />";
        }
    }
    closedir($handle);
}

else
{
    if (!is_dir($base."/".$get_album) || strstr($get_album,".")!=NULL || strstr($get_album,"/")!=NULL || strstr($get_album,"\\")!=NULL)
    {
        echo "Dit album bestaat niet.";
    }
    else
    {
        $x = 0;
        echo "<b>$get_album</b><p />";
        $handle = opendir($base."/".$get_album);
        while (($file = readdir($handle)) !== FALSE)
        {
            if ($file != "." && $file != "..")
            {
                echo "<table style='display:inline;'><tr><td><a href='$base/$get_album/$file' rel='lightbox'><img src='$base/$get_album/$file' height='150' width='100'></a></td></tr></table>";
                $x++;
            }
                if ($x==$column)
                {
                    echo "<br />";
                    $x = 0;
                }
            }
    }
    closedir($handle);

    echo "<p /><a href='$page'>Terug Naar Albums</a>";

}

?>

</body>
</html>

1 个答案:

答案 0 :(得分:9)

更改行
$dst_r = ImageCreateTrueColor( $targ_w, $targ_h );

$dst_r = imagecreatetruecolor($_POST['w'], $_POST['h']);

=&GT;这将创建一个包含所选区域的新图像,您可以删除$ targ_w和$ targ_h变量。

更改行
imagecopyresampled($dst_r,$img_r,0,0,$_POST['x'],$_POST['y'],
$targ_w,$targ_h,$_POST['w'],$_POST['h']);

imagecopy(
    $dst_r, $img_r,
    0, 0, $_POST['x'], $_POST['y'],
    $_POST['w'], $_POST['h']
);