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 +++++++++++++++
 core/views/quick_pane.html.php |  6 ++++++
 2 files changed, 21 insertions(+)

(limited to 'core')

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" &&
+        $function == "rotate" &&
+        !function_exists("imagerotate")) {
+      return false;
+    }
+
+    return true;
+  }
 }
diff --git a/core/views/quick_pane.html.php b/core/views/quick_pane.html.php
index 88da9d3e..7ae0a856 100644
--- a/core/views/quick_pane.html.php
+++ b/core/views/quick_pane.html.php
@@ -1,17 +1,22 @@
 <?php defined("SYSPATH") or die("No direct script access.") ?>
 <? if ($item->type == "photo"): ?>
+<? if (graphics::can("rotate")): ?>
 <div class="rotate-counter-clockwise"
      href="<?= url::site("quick/rotate/$item->id/ccw?csrf=" . access::csrf_token()) ?>">
   <span>
     <?= _("Rotate CCW") ?>
   </span>
 </div>
+<? endif ?>
+
 <div class="edit gDialogLink"
      href="<?= url::site("quick/form_edit/$item->id") ?>">
   <span>
     <?= _("Edit") ?>
   </span>
 </div>
+
+<? if (graphics::can("rotate")): ?>
 <div class="rotate-clockwise"
      href="<?= url::site("quick/rotate/$item->id/cw?csrf=" . access::csrf_token()) ?>">
   <span>
@@ -19,3 +24,4 @@
   </span>
 </div>
 <? endif ?>
+<? endif ?>
-- 
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