Added Ctrl+[movement keys] for keyboard navigation between desktops.

Signed-off-by: Mavridis Philippe <mavridisf@gmail.com>
(cherry picked from commit 0267f1cf497043a04a5367a33a0d66ae5e879705)

4 files changed, 178 insertions, 26 deletions

diff --git a/src/komposedesktopwidget.cpp b/src/komposedesktopwidget.cpp
index 4c1bbde..0f3c567 100644
--- a/src/komposedesktopwidget.cpp
+++ b/src/komposedesktopwidget.cpp
@@ -31,6 +31,7 @@
 #include <tqpainter.h>
 #include <tqapplication.h>
 #include <tqdragobject.h>
+#include <tqobjectlist.h>
 #include <tqtooltip.h>
 
 #include <tdelocale.h>
@@ -109,48 +110,75 @@ void KomposeDesktopWidget::initFonts()
 //   return (double)deskRect.width() / (double)deskRect.height();
 // }
 
+void KomposeDesktopWidget::setHighlight()
+{
+  highlight = true;
+  repaint();
+}
+
+void KomposeDesktopWidget::clearHighlight()
+{
+  highlight = false;
+  repaint();
+}
+
+void KomposeDesktopWidget::setInactive()
+{
+  if( hasFocus() )
+    clearFocus();
+}
+
+void KomposeDesktopWidget::setActive()
+{
+  // Focus first window (if there is one)
+  const TQObjectList *lst = children();
+
+  if ( lst )
+  {
+    TQObjectListIterator it( *lst );
+    TQWidget *widget;
+    while ( (widget = (TQWidget*)it.current() ) )
+    {
+      if (widget->inherits("KomposeTaskWidget"))
+      {
+	widget->setFocus();
+	break;
+      }
+      ++it;
+    }
+  }
+
+  emit activated(this);
+}
 
 void KomposeDesktopWidget::leaveEvent ( TQEvent * )
 {
-  // Unset highlight if cursor moves out of our rect
+  unsetCursor();
+
+  // Mark desktop as inactive if cursor moves out of our rect
   // but not if it enters a child widget
   TQRect deskRect;
   deskRect.setTopLeft(mapToGlobal( TQPoint(0,0) ));
   deskRect.setWidth(width());
   deskRect.setHeight(height());
   if ( !deskRect.contains( TQCursor::pos() ) )
-    highlight = false;
-
-  unsetCursor();
-  repaint();
+    setInactive();
 }
 
 void KomposeDesktopWidget::enterEvent ( TQEvent * )
 {
-  setFocus();
   setCursor( KCursor::handCursor() );
-  highlight = true;
-  repaint();
+  setActive();
 }
 
 void KomposeDesktopWidget::focusInEvent ( TQFocusEvent * )
 {
-  highlight = true;
-  repaint();
+  setActive();
 }
 
 void KomposeDesktopWidget::focusOutEvent ( TQFocusEvent * )
 {
-  // Unset highlight if cursor moves out of our rect
-  // but not if it enters a child widget
-  TQRect deskRect;
-  deskRect.setTopLeft(mapToGlobal( TQPoint(0,0) ));
-  deskRect.setWidth(width());
-  deskRect.setHeight(height());
-  if ( !deskRect.contains( TQCursor::pos() ) )
-    highlight = false;
-
-  repaint();
+  setInactive();
 }
 
 void KomposeDesktopWidget::mouseReleaseEvent ( TQMouseEvent * e )
diff --git a/src/komposedesktopwidget.h b/src/komposedesktopwidget.h
index a3a3449..e3e646b 100644
--- a/src/komposedesktopwidget.h
+++ b/src/komposedesktopwidget.h
@@ -36,12 +36,18 @@ public:
 
   ~KomposeDesktopWidget();
 
+  void setHighlight();
+  void clearHighlight();
+  void setInactive();
+  void setActive();
+
   //   int getHeightForWidth( int w ) const;
   //   int getWidthForHeight( int h ) const;
   //   double getAspectRatio();
 
 signals:
   void contentsChanged();
+  void activated(KomposeDesktopWidget*);
 
 protected:
   void paintEvent ( TQPaintEvent * );
diff --git a/src/komposefullscreenwidget.cpp b/src/komposefullscreenwidget.cpp
index 4fdda7f..f54c633 100644
--- a/src/komposefullscreenwidget.cpp
+++ b/src/komposefullscreenwidget.cpp
@@ -33,6 +33,7 @@
 #include <kdebug.h>
 #include <krootpixmap.h>
 
+static bool controlHold = false; // is the control key pressed
 
 KomposeFullscreenWidget::KomposeFullscreenWidget( int displayType, KomposeLayout *l )
     : KomposeTaskContainerWidget( -1, 0, l ),
@@ -160,7 +161,8 @@ void KomposeFullscreenWidget::createDesktopWidgets()
     //int col = i % 2;
     //kdDebug() << "rc %d %d", row, col);
     KomposeDesktopWidget *desktop = new KomposeDesktopWidget(i, this );
-    connect(desktop, SIGNAL(contentsChanged()), layout, SLOT(arrangeLayout()) );
+    connect( desktop, SIGNAL(contentsChanged()), layout, SLOT(arrangeLayout()) );
+    connect( desktop, SIGNAL(activated(KomposeDesktopWidget*)), this, SLOT(desktopChanged(KomposeDesktopWidget*)) );
     desktop->show();
   }
 }
@@ -190,7 +192,16 @@ void KomposeFullscreenWidget::mousePressEvent ( TQMouseEvent * e )
   }
 }
 
-void KomposeFullscreenWidget::keyReleaseEvent ( TQKeyEvent * e )
+void KomposeFullscreenWidget::keyPressEvent( TQKeyEvent *e )
+{
+  if ( e->key() == TQt::Key_Control )
+  {
+    controlHold = true;
+    e->accept();
+  }
+}
+
+void KomposeFullscreenWidget::keyReleaseEvent ( TQKeyEvent *e )
 {
   if ( e->key() == TQt::Key_Escape )
   {
@@ -198,14 +209,114 @@ void KomposeFullscreenWidget::keyReleaseEvent ( TQKeyEvent * e )
     KomposeViewManager::instance()->closeCurrentView();
     e->accept();
   }
+
+  else if ( e->key() == TQt::Key_Control )
+  {
+    controlHold = false;
+    e->accept();
+    return;
+  }
+
+  // Movement keys
+  else if ( e->key() == TQt::Key_Right || e->key() == TQt::Key_D || e->key() == TQt::Key_H ||
+            e->key() == TQt::Key_Left  || e->key() == TQt::Key_A || e->key() == TQt::Key_J ||
+            e->key() == TQt::Key_Up    || e->key() == TQt::Key_W || e->key() == TQt::Key_K ||
+            e->key() == TQt::Key_Down  || e->key() == TQt::Key_S || e->key() == TQt::Key_L )
+  {
+        // Map keys to directions
+    int direction = DLAYOUT_RIGHT;
+    switch( e->key() )
+    {
+    case TQt::Key_Right:
+      direction = DLAYOUT_RIGHT;
+      break;
+    case TQt::Key_D:
+      direction = DLAYOUT_RIGHT;
+      break;
+    case TQt::Key_L:
+      direction = DLAYOUT_RIGHT;
+      break;
+    case TQt::Key_Left:
+      direction = DLAYOUT_LEFT;
+      break;
+    case TQt::Key_A:
+      direction = DLAYOUT_LEFT;
+      break;
+    case TQt::Key_H:
+      direction = DLAYOUT_LEFT;
+      break;
+    case TQt::Key_Up:
+      direction = DLAYOUT_TOP;
+      break;
+    case TQt::Key_W:
+      direction = DLAYOUT_TOP;
+      break;
+    case TQt::Key_K:
+      direction = DLAYOUT_TOP;
+      break;
+    case TQt::Key_Down:
+      direction = DLAYOUT_BOTTOM;
+      break;
+    case TQt::Key_S:
+      direction = DLAYOUT_BOTTOM;
+      break;
+    case TQt::Key_J:
+      direction = DLAYOUT_BOTTOM;
+      break;
+    }
+
+    focusNeighbourDesk( direction );
+    e->accept();
+    return;
+  }
+
   else
   {
     kdDebug() << "KomposeFullscreenWidget::keyReleaseEvent - ignored..." << endl;
     e->ignore();
   }
+
   KomposeTaskContainerWidget::keyReleaseEvent(e);
 }
 
+bool KomposeFullscreenWidget::focusNeighbourDesk( int direction )
+{
+  bool successfull = false;
+  KomposeWidget *widget;
+  if ( ( widget = layout->getNeighbour( dynamic_cast<KomposeWidget*>(current), direction, WLAYOUT_BOTH  ) ) != 0 )
+  {
+    kdDebug() << "KomposeFullscreenWidget::keyReleaseEvent - Focussing " << widget->className() << endl;
+    dynamic_cast<KomposeDesktopWidget*>(widget)->setActive();
+    successfull = true;
+  }
+
+  return successfull;
+}
+
+void KomposeFullscreenWidget::desktopChanged( KomposeDesktopWidget* desk )
+{
+  kdDebug() << "KomposeFullscreenWidget: desktopChanged" << endl;
+  // Remove highlight from all other desks
+  const TQObjectList *lst = children();
+
+  if( lst )
+  {
+    TQObjectListIterator it( *lst );
+    TQWidget *widget;
+    while ( (widget = (TQWidget*)it.current() ) )
+    {
+      if ( widget->inherits("KomposeDesktopWidget") )
+      {
+        dynamic_cast<KomposeDesktopWidget*>(widget)->clearHighlight();
+      }
+      ++it;
+    }
+  }
+
+  desk->setHighlight();
+  current = desk;
+}
+
 int KomposeFullscreenWidget::getHeightForWidth ( int w ) const
 {
   return (int)(((double)w / (double)width()) * (double)height());
diff --git a/src/komposefullscreenwidget.h b/src/komposefullscreenwidget.h
index 7b1af6e..15f3fdf 100644
--- a/src/komposefullscreenwidget.h
+++ b/src/komposefullscreenwidget.h
@@ -44,18 +44,25 @@ protected:
   void initMenu();
   void createDesktopWidgets();
 
-  void mouseReleaseEvent (TQMouseEvent *);
-  void mousePressEvent (TQMouseEvent *);
-  void keyReleaseEvent ( TQKeyEvent * e );
+  void mouseReleaseEvent( TQMouseEvent * );
+  void mousePressEvent( TQMouseEvent * );
+  void keyPressEvent( TQKeyEvent *e );
+  void keyReleaseEvent( TQKeyEvent *e );
 //   void paintEvent ( TQPaintEvent * );
 
+  bool focusNeighbourDesk( int direction );
+
   void destroyChildWidgets();
 //   virtual void closeEvent ( TQCloseEvent * e );
- 
+
+protected slots:
+  void desktopChanged( KomposeDesktopWidget* desk );
+
 private:
   int type;
   TDEPopupMenu *menu;
   KRootPixmap *rootpix;
+  KomposeDesktopWidget *current;
 };
 
 #endif