From 393273eaef4798cb4d03c73c4853edfb5903608b Mon Sep 17 00:00:00 2001
From: Bharat Mediratta <bharat@menalto.com>
Date: Tue, 6 Jan 2009 09:30:32 +0000
Subject: Add graphics::Can() to let us determine whether the active toolkit
 supports a given function.  Right now it's hardcoded to support what we know
 about GD.

---
 core/helpers/graphics.php | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'core/helpers')

diff --git a/core/helpers/graphics.php b/core/helpers/graphics.php
index 53cf01db..d36a2421 100644
--- a/core/helpers/graphics.php
+++ b/core/helpers/graphics.php
@@ -304,4 +304,19 @@ class graphics_Core {
 
     self::$init = 1;
   }
+
+  /**
+   * Verify that a specific graphics function is available with the active toolkit.
+   * @param  string  $function the function name (eg rotate, resize)
+   * @return boolean
+   */
+  function can($function) {
+    if (module::get_var("core", "graphics_toolkit") == "gd" &&
+        $function == "rotate" &&
+        !function_exists("imagerotate")) {
+      return false;
+    }
+
+    return true;
+  }
 }
-- 
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