Fast panning with Shift pressed.

src/laybasic/laybasic/layLayoutCanvas.cc

@@ -378,8 +378,9 @@ LayoutCanvas::~LayoutCanvas ()
 }
 
 void
-LayoutCanvas::key_event (unsigned int key, unsigned int /*buttons*/)
+LayoutCanvas::key_event (unsigned int key, unsigned int buttons)
 {
+  if (! (buttons & lay::ShiftButton)) {
     if (int (key) == Qt::Key_Down) {
       emit down_arrow_key_pressed ();
     } else if (int (key) == Qt::Key_Up) {
@@ -389,6 +390,17 @@ LayoutCanvas::key_event (unsigned int key, unsigned int /*buttons*/)
     } else if (int (key) == Qt::Key_Right) {
       emit right_arrow_key_pressed ();
     }
+  } else {
+    if (int (key) == Qt::Key_Down) {
+      emit down_arrow_key_pressed_with_shift ();
+    } else if (int (key) == Qt::Key_Up) {
+      emit up_arrow_key_pressed_with_shift ();
+    } else if (int (key) == Qt::Key_Left) {
+      emit left_arrow_key_pressed_with_shift ();
+    } else if (int (key) == Qt::Key_Right) {
+      emit right_arrow_key_pressed_with_shift ();
+    }
+  }
 }
 
 void

src/laybasic/laybasic/layLayoutCanvas.h

@@ -348,6 +348,10 @@ signals:
   void up_arrow_key_pressed ();
   void right_arrow_key_pressed ();
   void down_arrow_key_pressed ();
+  void left_arrow_key_pressed_with_shift ();
+  void up_arrow_key_pressed_with_shift ();
+  void right_arrow_key_pressed_with_shift ();
+  void down_arrow_key_pressed_with_shift ();
 
 private:
   lay::LayoutView *mp_view;

src/laybasic/laybasic/layLayoutView.cc

@@ -83,6 +83,9 @@ namespace lay
 //  factor for "zoom in & out"
 const double zoom_factor = 0.7;
 
+//  factor by which panning is faster in "fast" (+Shift) mode
+const double fast_factor = 3.0;
+
 // -------------------------------------------------------------
 
 struct OpHideShowCell 
@@ -482,6 +485,10 @@ LayoutView::init (db::Manager *mgr, lay::PluginRoot *root, QWidget * /*parent*/)
   connect (mp_canvas, SIGNAL (up_arrow_key_pressed ()), this, SLOT (pan_up ()));
   connect (mp_canvas, SIGNAL (right_arrow_key_pressed ()), this, SLOT (pan_right ()));
   connect (mp_canvas, SIGNAL (down_arrow_key_pressed ()), this, SLOT (pan_down ()));
+  connect (mp_canvas, SIGNAL (left_arrow_key_pressed_with_shift ()), this, SLOT (pan_left_fast ()));
+  connect (mp_canvas, SIGNAL (up_arrow_key_pressed_with_shift ()), this, SLOT (pan_up_fast ()));
+  connect (mp_canvas, SIGNAL (right_arrow_key_pressed_with_shift ()), this, SLOT (pan_right_fast ()));
+  connect (mp_canvas, SIGNAL (down_arrow_key_pressed_with_shift ()), this, SLOT (pan_down_fast ()));
 
   //  occupy services and editables:
   //  these services get deleted by the canvas destructor automatically:
@@ -3509,6 +3516,30 @@ LayoutView::pan_down ()
   shift_window (1.0, 0.0, -m_pan_distance);
 }
 
+void
+LayoutView::pan_left_fast ()
+{
+  shift_window (1.0, -m_pan_distance * fast_factor, 0.0);
+}
+
+void
+LayoutView::pan_right_fast ()
+{
+  shift_window (1.0, m_pan_distance * fast_factor, 0.0);
+}
+
+void
+LayoutView::pan_up_fast ()
+{
+  shift_window (1.0, 0.0, m_pan_distance * fast_factor);
+}
+
+void
+LayoutView::pan_down_fast ()
+{
+  shift_window (1.0, 0.0, -m_pan_distance * fast_factor);
+}
+
 void
 LayoutView::pan_center (const db::DPoint &p)
 {

src/laybasic/laybasic/layLayoutView.h

@@ -2425,6 +2425,10 @@ public slots:
   void pan_up ();
   void pan_right ();
   void pan_down ();
+  void pan_left_fast ();
+  void pan_up_fast ();
+  void pan_right_fast ();
+  void pan_down_fast ();
 
   //  menu callbacks
   void cm_new_layer ();