From e204e18b3c6a4b4b1aa76b6d4a5392bd238490eb Mon Sep 17 00:00:00 2001
From: Tim Almdal <tnalmdal@shaw.ca>
Date: Thu, 24 Sep 2009 20:28:26 -0700
Subject: Refactor the graphic rules processing to accomplish 2 goals: First
 separate the grapics library from module supplied rules and secondly, allow
 for modules to provide new processing rules callbacks.  graphics::generate
 will now look for <module_name>_graphics::<rule> methods.

---
 modules/gallery/helpers/gallery_graphics.php | 54 ++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 modules/gallery/helpers/gallery_graphics.php

(limited to 'modules/gallery/helpers/gallery_graphics.php')

diff --git a/modules/gallery/helpers/gallery_graphics.php b/modules/gallery/helpers/gallery_graphics.php
new file mode 100644
index 00000000..f62fbf97
--- /dev/null
+++ b/modules/gallery/helpers/gallery_graphics.php
@@ -0,0 +1,54 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2009 Bharat Mediratta
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+class gallery_graphics_Core {
+  /**
+   * Resize an image.  Valid options are width, height and master.  Master is one of the Image
+   * master dimension constants.
+   *
+   * @param string     $input_file
+   * @param string     $output_file
+   * @param array      $options
+   */
+  static function resize($input_file, $output_file, $options) {
+    graphics::init_toolkit();
+
+    module::event("graphics_resize", $input_file, $output_file, $options);
+
+    if (@filesize($input_file) == 0) {
+      throw new Exception("@todo EMPTY_INPUT_FILE");
+    }
+
+    $dims = getimagesize($input_file);
+    if (max($dims[0], $dims[1]) < min($options["width"], $options["height"])) {
+      // Image would get upscaled; do nothing
+      copy($input_file, $output_file);
+    } else {
+      $image = Image::factory($input_file)
+        ->resize($options["width"], $options["height"], $options["master"])
+        ->quality(module::get_var("gallery", "image_quality"));
+      if (graphics::can("sharpen")) {
+        $image->sharpen(module::get_var("gallery", "image_sharpen"));
+      }
+      $image->save($output_file);
+    }
+
+    module::event("graphics_resize_completed", $input_file, $output_file, $options);
+  }
+}
-- 
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