Pipette and "On Preview Widgets" branch. See issue 227

The pipette part is already working quite nice but need to be finished. The widgets part needs more work...

rtgui/toolbar.h

@@ -0,0 +1,63 @@
+/*
+ *  This file is part of RawTherapee.
+ *
+ *  Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
+ *
+ *  RawTherapee is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  RawTherapee is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with RawTherapee.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __TOOLBAR_H__
+#define __TOOLBAR_H__
+
+#include <gtkmm.h>
+#include "toolenum.h"
+
+class ToolBarListener {
+
+  public:
+    virtual void toolSelected (ToolMode tool) {}
+
+};
+
+class ToolBar : public Gtk::HBox {
+
+  protected:
+    Gtk::ToggleButton* handTool;
+    Gtk::ToggleButton* wbTool;
+    Gtk::ToggleButton* cropTool;
+    Gtk::ToggleButton* straTool;
+    ToolBarListener* listener;
+    ToolMode current;
+    sigc::connection  handConn;
+    sigc::connection  wbConn;
+    sigc::connection  cropConn;
+    sigc::connection  straConn;
+
+  public:
+    ToolBar ();
+
+    void     setTool (ToolMode tool);
+    ToolMode getTool () { return current; }
+
+    void setToolBarListener (ToolBarListener* tpl) { listener = tpl; }
+
+    void hand_pressed ();
+    void wb_pressed ();
+    void crop_pressed ();
+    void stra_pressed ();
+
+    bool handleShortcutKey (GdkEventKey* event);
+    void removeWbTool();
+};
+
+#endif