Theme image support for the Mac.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/140007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@18925 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 29 insertions, 2 deletions

diff --git a/app/app.gyp b/app/app.gyp
index e316d41d..faced76 100644
--- a/app/app.gyp
+++ b/app/app.gyp
@@ -101,6 +101,7 @@
         'resource_bundle_mac.mm',
         'slide_animation.cc',
         'slide_animation.h',
+        'theme_provider.cc',
         'theme_provider.h',
         'throb_animation.cc',
         'throb_animation.h',
diff --git a/app/theme_provider.cc b/app/theme_provider.cc
new file mode 100644
index 0000000..7593e15
--- /dev/null
+++ b/app/theme_provider.cc
@@ -0,0 +1,12 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "app/theme_provider.h"
+
+// We have the destructor here because GCC puts the vtable in the first file
+// that includes a virtual function of the class. Leaving it just in the .h file
+// means that GCC will fail to link.
+
+ThemeProvider::~ThemeProvider() {
+}
diff --git a/app/theme_provider.h b/app/theme_provider.h
index 774810e..75e9255 100644
--- a/app/theme_provider.h
+++ b/app/theme_provider.h
@@ -10,7 +10,13 @@
 
 #if defined(OS_LINUX)
 #include <gdk/gdk.h>
-#endif
+#elif defined(OS_MACOSX)
+#ifdef __OBJC__
+@class NSImage;
+#else
+class NSImage;
+#endif  // __OBJC__
+#endif  // OS_*
 
 class SkBitmap;
 
@@ -25,7 +31,7 @@ class SkBitmap;
 
 class ThemeProvider {
  public:
-  virtual ~ThemeProvider() { }
+  virtual ~ThemeProvider();
 
   // Get the bitmap specified by |id|. An implementation of ThemeProvider should
   // have its own source of ids (e.g. an enum, or external resource bundle).
@@ -56,6 +62,14 @@ class ThemeProvider {
   // pointer to a shared empty placeholder bitmap so it will be visible what
   // is missing.
   virtual GdkPixbuf* GetPixbufNamed(int id) = 0;
+#elif defined(OS_MACOSX)
+  // Gets the NSImage with the specified |id|.  Returns a pointer to a shared
+  // instance of the NSImage.  This shared NSImage is owned by the theme
+  // provider and should not be freed.
+  //
+  // The bitmap is not assumed to exist. If a theme does not provide an image,
+  // this function will return nil.
+  virtual NSImage* GetNSImageNamed(int id) = 0;
 #endif
 };