Added global shortcuts for switching to previous/next group

This resolves issue #6.

Signed-off-by: Mavridis Philippe <mavridisf@gmail.com>

kkbswitch/kbconfig.cpp

@@ -109,6 +109,16 @@ void KBConfig::load(TDEConfig *config){
       TQString::null, TQt::ALT+TQt::CTRL+TQt::Key_1 + i, KKey::QtWIN+TQt::CTRL+TQt::Key_1 + i,
       kapp, SLOT(slotGroupSelected(int)));
   }
+  m_keys->insert("NextGroup", i18n("Cycle keyboard layouts"),
+                 i18n("Activates the next keyboard layout or, if the current layout is the last one, "
+                      "activates the first layout."),
+                 TQt::SHIFT+TQt::CTRL+TQt::Key_Plus, TQt::SHIFT+TQt::CTRL+TQt::Key_Plus,
+                 kapp, SLOT(slotSelectNextGroup()));
+  m_keys->insert("PrevGroup", i18n("Cycle keyboard layouts (reverse)"),
+                 i18n("Activates the previous keyboard layout or, if the current layout is the first one, "
+                      "activates the last layout."),
+                 TQt::SHIFT+TQt::CTRL+TQt::Key_Minus, TQt::SHIFT+TQt::CTRL+TQt::Key_Minus,
+                 kapp, SLOT(slotSelectPrevGroup()));
   m_keys->readSettings(config);
   checkKeysEnabled();
 }

kkbswitch/kbconfig.h

@@ -85,6 +85,9 @@ public:
   void drawIcons(IconStyle icon_style, TQValueVector<TQPixmap> *icons,
     TQStringList *iconpaths);
   void checkKeysEnabled();
+  int getPrevGroup(int groupno) {
+    return groupno == 0 ? groupCount() - 1 : groupno - 1;
+  }
   int getNextGroup(int groupno) {
     return groupno >= groupCount() - 1 ? 0 : groupno + 1;
   }

kkbswitch/kbswitchapp.cpp

@@ -130,7 +130,7 @@ void KBSwitchApp::forceSetGroup(int groupno)
   m_xkb.setGroupNo(groupno);
 }
 
-/** No descriptions */
+/** Select the next keyboard layout (wraps around) */
 void KBSwitchApp::slotSelectNextGroup()
 {
 #ifdef HAVE_LIBXKLAVIER
@@ -141,6 +141,16 @@ void KBSwitchApp::slotSelectNextGroup()
 #endif
 }
 
+/** Select the previous keyboard layout (wraps around) */
+void KBSwitchApp::slotSelectPrevGroup()
+{
+#ifdef HAVE_LIBXKLAVIER
+  m_xkb.setGroupNo(XklGetPrevGroup());
+#else
+  m_xkb.setGroupNo(m_kbconf.getPrevGroup(m_cur_groupno));
+#endif
+}
+
 /** No descriptions */
 void KBSwitchApp::slotPreferences(){
   KBConfigDlg dlg(&m_kbconf);

kkbswitch/kbswitchapp.h

@@ -110,8 +110,10 @@ private: // Private methods
 private slots: // Private slots
   /** No descriptions */
   void slotGroupSelected(int groupno);
-  /** No descriptions */
+  /** Select the next keyboard layout (wraps around) */
   void slotSelectNextGroup();
+  /** Select the previous keyboard layout (wraps around) */
+  void slotSelectPrevGroup();
   /** No descriptions */
   void slotPreferences();
   /** No descriptions */