+void Header::mousePressEvent(QMouseEvent *event)
+{
+ assert(event);
+
+ const vector< shared_ptr<Trace> > traces(_view.get_traces());
+
+ if (event->button() & Qt::LeftButton) {
+ _mouse_down_point = event->pos();
+
+ // Save the offsets of any signals which will be dragged
+ BOOST_FOREACH(const shared_ptr<Trace> t, traces)
+ if (t->selected())
+ _drag_traces.push_back(
+ make_pair(t, t->get_v_offset()));
+ }
+
+ // Select the signal if it has been clicked
+ const shared_ptr<Trace> mouse_over_trace =
+ get_mouse_over_trace(event->pos());
+ if (mouse_over_trace) {
+ if (mouse_over_trace->selected())
+ mouse_over_trace->select(false);
+ else {
+ mouse_over_trace->select(true);
+
+ if (~QApplication::keyboardModifiers() &
+ Qt::ControlModifier)
+ _drag_traces.clear();
+
+ // Add the signal to the drag list
+ if (event->button() & Qt::LeftButton)
+ _drag_traces.push_back(
+ make_pair(mouse_over_trace,
+ mouse_over_trace->get_v_offset()));
+ }
+ }
+
+ if (~QApplication::keyboardModifiers() & Qt::ControlModifier) {
+ // Unselect all other signals because the Ctrl is not
+ // pressed
+ BOOST_FOREACH(const shared_ptr<Trace> t, traces)
+ if (t != mouse_over_trace)
+ t->select(false);
+ }
+
+ selection_changed();
+ update();
+}
+
+void Header::mouseReleaseEvent(QMouseEvent *event)
+{
+ assert(event);
+ if (event->button() == Qt::LeftButton) {
+ _drag_traces.clear();
+ _view.normalize_layout();
+ }
+}
+
+void Header::mouseMoveEvent(QMouseEvent *event)
+{
+ assert(event);
+ _mouse_point = event->pos();
+
+ // Move the signals if we are dragging
+ if (!_drag_traces.empty()) {
+ const int delta = event->pos().y() - _mouse_down_point.y();
+
+ for (std::list<std::pair<boost::weak_ptr<Trace>,
+ int> >::iterator i = _drag_traces.begin();
+ i != _drag_traces.end(); i++) {
+ const boost::shared_ptr<Trace> trace((*i).first);
+ if (trace) {
+ const int y = (*i).second + delta;
+ const int y_snap =
+ ((y + View::SignalSnapGridSize / 2) /
+ View::SignalSnapGridSize) *
+ View::SignalSnapGridSize;
+ trace->set_v_offset(y_snap);
+
+ // Ensure the trace is selected
+ trace->select();
+ }
+
+ }
+
+ signals_moved();
+ }
+
+ update();
+}
+
+void Header::leaveEvent(QEvent*)
+{
+ _mouse_point = QPoint(-1, -1);
+ update();
+}
+
+void Header::contextMenuEvent(QContextMenuEvent *event)
+{
+ const shared_ptr<Trace> t = get_mouse_over_trace(_mouse_point);
+
+ if (!t)
+ return;
+
+ QMenu menu(this);
+ menu.addAction(_action_set_name);
+ menu.addAction(_action_set_colour);
+
+ _context_trace = t;
+ menu.exec(event->globalPos());
+ _context_trace.reset();
+}
+
+void Header::on_action_set_name_triggered()
+{
+ bool ok = false;
+
+ shared_ptr<view::Trace> context_trace = _context_trace;
+ if (!context_trace)
+ return;
+
+ const QString new_label = QInputDialog::getText(this, tr("Set Name"),
+ tr("Name"), QLineEdit::Normal, context_trace->get_name(), &ok);
+
+ if (ok)
+ context_trace->set_name(new_label);
+}
+
+void Header::on_action_set_colour_triggered()
+{
+ shared_ptr<view::Trace> context_trace = _context_trace;
+ if (!context_trace)
+ return;
+
+ const QColor new_colour = QColorDialog::getColor(
+ context_trace->get_colour(), this, tr("Set Colour"));
+
+ if (new_colour.isValid())
+ context_trace->set_colour(new_colour);
+}
+
+void Header::on_signals_changed()
+{
+ const vector< shared_ptr<Trace> > traces(_view.get_traces());
+ BOOST_FOREACH(shared_ptr<Trace> t, traces) {
+ assert(t);
+ connect(t.get(), SIGNAL(text_changed()), this, SLOT(update()));
+ }
+}
+
+void Header::on_signals_moved()
+{
+ update();
+}
+
+