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authorJesse Morgan <jesse@jesterpm.net>2011-06-21 15:08:25 -0700
committerJesse Morgan <jesse@jesterpm.net ; true>2011-06-21 15:08:25 -0700
commit7de4c79febccde0f1855f5ab9c3c32700549db53 (patch)
tree2bb8077386df8f299e96f2fea0ca10b3af56160d
parent84a9200647ea9e8f4d65e8d76bd263f4e82a922d (diff)
Automatically resize images
-rw-r--r--htdocs/new-post.php3
-rw-r--r--htdocs/src/Post.inc.php40
2 files changed, 33 insertions, 10 deletions
diff --git a/htdocs/new-post.php b/htdocs/new-post.php
index 1bcdc89..9082102 100644
--- a/htdocs/new-post.php
+++ b/htdocs/new-post.php
@@ -190,7 +190,8 @@ function handle_images() {
$post = $_SESSION['newpost'];
// Display image form
- echo "<p>You may upload up to four images with your post.</p>";
+ echo "<p>You may upload up to four images with your post."
+ . " Valid image types are JPEG and PNG.</p>";
form_start('source');
diff --git a/htdocs/src/Post.inc.php b/htdocs/src/Post.inc.php
index 4386546..2eef773 100644
--- a/htdocs/src/Post.inc.php
+++ b/htdocs/src/Post.inc.php
@@ -11,12 +11,13 @@
require_once "base.inc.php";
class Post {
+ const MAX_IMAGE_DIM = 600;
+
private $info;
private $indatabase = false;
private $images;
private $category;
-
public function __construct($info=null) {
$this->info = is_null($info) ? array() : $info;
@@ -267,28 +268,49 @@ class Post {
$info = @getimagesize($file);
if (!$info) {
+ // Quietly ignore that the file isn't an image.
return false;
}
- // TODO Verify image dimensions?
- if ($info[0] > self::MAX_IMAGE_WIDTH
- or $info[1] > self::MAX_IMAGE_HEIGHT) {
+ // Resize Images if needed
+ if ($info[0] > self::MAX_IMAGE_DIM
+ or $info[1] > self::MAX_IMAGE_DIM) {
$ratio = $info[0] / $info[1];
if ($ratio > 1) {
// Width limited
- $width = min($info[0], self::MAX_IMAGE_WIDTH);
- $height = $info[1] / $ratio;
+ $width = min($info[0], self::MAX_IMAGE_DIM);
+ $height = $info[1] * $width / $info[0];
} else {
// Height limited
-
+ $height = min($info[1], self::MAX_IMAGE_DIM);
+ $width = $info[0] * $height / $info[1];
}
- $width = min($info[0], self::MAX_IMAGE_WIDTH);
- $height = min($info[1], self::MAX_IMAGE_HEIGHT);
+ switch ($info[2]) {
+ case IMAGETYPE_JPG:
+ $image = imagecreatefromjpeg($file);
+ break;
+
+ case IMAGETYPE_PNG:
+ $image = imagecreatefrompng($file);
+ break;
+
+ default:
+ // We quietly ignore if the image is not a valid type.
+ return false;
+ }
+
+ $newimage = imagecreatetruecolor($width, $height);
+
+ imagecopyresampled($newimage, $image, 0, 0, 0, 0, $width, $height, $info[0], $info[1]);
+
+ imagejpeg($newimage, $file);
+ imagedestroy($newimage);
+ imagedestroy($image);
}
// Get image id