Relocate custom button code to its own files, in anticipation of more changes.

(Next is to fix the menu buttons.)

Review URL: http://codereview.chromium.org/20509

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@10053 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 44 insertions, 0 deletions

diff --git a/chrome/browser/gtk/custom_button.h b/chrome/browser/gtk/custom_button.h
new file mode 100644
index 0000000..d5f7721
--- /dev/null
+++ b/chrome/browser/gtk/custom_button.h
@@ -0,0 +1,44 @@
+// 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.
+
+#ifndef CHROME_BROWSER_GTK_CUSTOM_BUTTON_H_
+#define CHROME_BROWSER_GTK_CUSTOM_BUTTON_H_
+
+#include <gtk/gtk.h>
+
+#include <string>
+
+// These classes implement custom-drawn buttons.  They're used on the toolbar
+// and the bookmarks bar.
+
+class CustomDrawButton {
+ public:
+  // The constructor takes 4 resource ids.  If a resource doesn't exist for a
+  // button, pass in 0.
+  CustomDrawButton(int normal_id,
+                   int active_id,
+                   int highlight_id,
+                   int depressed_id);
+  explicit CustomDrawButton(const std::string& filename);
+  ~CustomDrawButton();
+
+  GtkWidget* widget() const { return widget_; }
+
+ private:
+  // Load an image given a resource id.
+  GdkPixbuf* LoadImage(int resource_id);
+
+  // Callback for expose, used to draw the custom graphics.
+  static gboolean OnExpose(GtkWidget* widget, GdkEventExpose* e,
+                           CustomDrawButton* obj);
+
+  // The actual button widget.
+  GtkWidget* widget_;
+
+  // We store one GdkPixbuf* for each possible state of the button;
+  // INSENSITIVE is the last available state;
+  GdkPixbuf* pixbufs_[GTK_STATE_INSENSITIVE + 1];
+};
+
+#endif  // CHROME_BROWSER_GTK_CUSTOM_BUTTON_H_