From e7d18bc0b142b77f18540e35a5ae49aec939d67c Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Sun, 4 Apr 2010 13:18:18 +0000
Subject: [PATCH] - Patch #758628 by rfay: improve GD library
 hook_requirements() for color and image modules.

---
 modules/color/color.install | 14 +++++++-------
 modules/image/image.install | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 7 deletions(-)

diff --git a/modules/color/color.install b/modules/color/color.install
index 3e86528c2a1..5503f606889 100644
--- a/modules/color/color.install
+++ b/modules/color/color.install
@@ -13,27 +13,27 @@ function color_requirements($phase) {
     // Check for the PHP GD library.
     if (function_exists('imagegd2')) {
       $info = gd_info();
-      $requirements['gd'] = array(
+      $requirements['color_gd'] = array(
         'value' => $info['GD Version'],
       );
 
       // Check for PNG support.
       if (function_exists('imagecreatefrompng')) {
-        $requirements['gd']['severity'] = REQUIREMENT_OK;
+        $requirements['color_gd']['severity'] = REQUIREMENT_OK;
       }
       else {
-        $requirements['gd']['severity'] = REQUIREMENT_ERROR;
-        $requirements['gd']['description'] = t('The GD library for PHP is enabled, but was compiled without PNG support. Check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/ref.image.php'));
+        $requirements['color_gd']['severity'] = REQUIREMENT_ERROR;
+        $requirements['color_gd']['description'] = t('The GD library for PHP is enabled, but was compiled without PNG support. Check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/ref.image.php'));
       }
     }
     else {
-      $requirements['gd'] = array(
+      $requirements['color_gd'] = array(
         'value' => t('Not installed'),
         'severity' => REQUIREMENT_ERROR,
-        'description' => t('The GD library for PHP is missing or outdated. Check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/ref.image.php')),
+        'description' => t('The GD library for PHP is missing or outdated. Check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/book.image.php')),
       );
     }
-    $requirements['gd']['title'] = t('GD library');
+    $requirements['color_gd']['title'] = t('GD library PNG support');
   }
 
   return $requirements;
diff --git a/modules/image/image.install b/modules/image/image.install
index 1e3663716d5..39f2f88b8ca 100644
--- a/modules/image/image.install
+++ b/modules/image/image.install
@@ -189,3 +189,40 @@ function image_update_7000() {
   }
 }
 
+/**
+ * Implements hook_requirements() to check the PHP GD Library.
+ *
+ * @param $phase
+ */
+function image_requirements($phase) {
+  $requirements = array();
+
+  if ($phase == 'runtime') {
+    // Check for the PHP GD library.
+    if (function_exists('imagegd2')) {
+      $info = gd_info();
+      $requirements['image_gd'] = array(
+        'value' => $info['GD Version'],
+      );
+
+      // Check for filter and rotate support.
+      if (function_exists('imagefilter') && function_exists('imagerotate')) {
+        $requirements['image_gd']['severity'] = REQUIREMENT_OK;
+      }
+      else {
+        $requirements['image_gd']['severity'] = REQUIREMENT_ERROR;
+        $requirements['image_gd']['description'] = t('The GD Library for PHP is enabled, but was compiled without support for functions used by the rotate and desaturate effects. It was probably compiled using the official GD libraries from http://www.libgd.org instead of the GD library bundled with PHP. You should recompile PHP --with-gd using the bundled GD library. See <a href="http://www.php.net/manual/book.image.php">the PHP manual</a>.');
+      }
+    }
+    else {
+      $requirements['image_gd'] = array(
+        'value' => t('Not installed'),
+        'severity' => REQUIREMENT_ERROR,
+        'description' => t('The GD library for PHP is missing or outdated. Check the <a href="@url">PHP image documentation</a> for information on how to correct this.', array('@url' => 'http://www.php.net/manual/book.image.php')),
+      );
+    }
+    $requirements['image_gd']['title'] = t('GD library rotate and desaturate effects');
+  }
+
+  return $requirements;
+}