Change image resize library.

fc2blog · Mar 19, 2014 · f440771 · f440771
1 parent dd50b5d
commit f440771
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Showing 3 changed files with 106 additions and 97 deletions.
diff --git a/app/controller/user/common_controller.php b/app/controller/user/common_controller.php
@@ -110,8 +110,8 @@ public function thumbnail()
     }
 
     // サムネイル出力処理
-    include(Config::get('LIB_DIR') . 'SimpleImage.php');
-    $image = new SimpleImage();
+    include(Config::get('LIB_DIR') . 'ThumbnailImageMaker.php');
+    $image = new ThumbnailImageMaker();
     $image->load($file_path);
     switch ($whs) {
       default:

diff --git a/app/lib/SimpleImage.php b/app/lib/SimpleImage.php
diff --git a/app/lib/ThumbnailImageMaker.php b/app/lib/ThumbnailImageMaker.php
@@ -0,0 +1,104 @@
+<?php
+
+/**
+ * ThumbnailImageMaker
+ *
+ * require GD
+ *
+ * @author     Junichi Ishida <uzulla@himitsukichi.com>
+ * @license    MIT License
+ * @version    v0.0.1
+ * @link       https://gist.github.com/uzulla/9645443
+ */
+
+class ThumbnailImageMaker
+{
+    private $image_resource;
+    private $width;
+    private $height;
+    public $image_type;
+
+    public function load($file_path)
+    {
+        $image_info = getimagesize($file_path);
+        if ($image_info === FALSE) return FALSE;
+        $this->image_type = $image_info[2];
+
+        if ($this->image_type === IMAGETYPE_JPEG) {
+            $create_result = $this->setImageResource(imagecreatefromjpeg($file_path));
+        } elseif ($this->image_type === IMAGETYPE_GIF) {
+            $create_result = $this->setImageResource(imagecreatefromgif($file_path));
+        } elseif ($this->image_type === IMAGETYPE_PNG) {
+            $create_result = $this->setImageResource(imagecreatefrompng($file_path));
+        } else {
+            return FALSE;
+        }
+        if ($create_result === FALSE) return FALSE;
+
+        return TRUE;
+    }
+
+    private function setImageResource($image_resource)
+    {
+        if ($image_resource === FALSE) return FALSE;
+
+        $this->image_resource = $image_resource;
+
+        $this->width = imagesx($this->image_resource);
+        $this->height = imagesy($this->image_resource);
+        if ($this->width === FALSE || $this->height === FALSE) return FALSE;
+
+        return TRUE;
+    }
+
+    public function resize($to_width, $to_height, $allow_expand = TRUE)
+    {
+        if (!$allow_expand && $to_width >= $this->width && $to_height >= $this->height) return TRUE;
+
+        $new_image = imagecreatetruecolor($to_width, $to_height);
+        imagecopyresampled(
+            $new_image,
+            $this->image_resource,
+            0, 0,
+            0, 0,
+            $to_width,
+            $to_height,
+            $this->width,
+            $this->height
+        );
+        return $this->setImageResource($new_image);
+    }
+
+    public function resizeToHeight($to_height, $allow_expand = TRUE)
+    {
+        if (!$allow_expand && $to_height >= $this->height) return TRUE;
+        $aspect_ratio = $to_height / $this->height;
+        $to_width = $this->width * $aspect_ratio;
+        return $this->resize($to_width, $to_height);
+    }
+
+    public function resizeToWidth($to_width, $allow_expand = TRUE)
+    {
+        if (!$allow_expand && $to_width >= $this->width) return TRUE;
+        $aspect_ratio = $to_width / $this->width;
+        $to_height = $this->height * $aspect_ratio;
+        return $this->resize($to_width, $to_height);
+    }
+
+    function save($filename, $image_type = IMAGETYPE_JPEG, $jpeg_compression = 75)
+    {
+        if ($image_type === IMAGETYPE_JPEG) {
+            $write_result = imagejpeg($this->image_resource, $filename, $jpeg_compression);
+        } elseif ($image_type === IMAGETYPE_GIF) {
+            $write_result = imagegif($this->image_resource, $filename);
+        } elseif ($image_type === IMAGETYPE_PNG) {
+            $write_result = imagepng($this->image_resource, $filename);
+        } else {
+            return FALSE;
+        }
+        if ($write_result === FALSE) return FALSE;
+
+        return TRUE;
+    }
+
+}