QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
- const bool dragging = !_drag_row_items.empty();
for (const shared_ptr<RowItem> r : row_items)
{
assert(r);
- const bool highlight = !dragging &&
+ const bool highlight = !_dragging &&
r->label_rect(w).contains(_mouse_point);
r->paint_label(painter, w, highlight);
}
painter.end();
}
+void Header::mouseLeftPressEvent(QMouseEvent *event)
+{
+ (void)event;
+
+ const bool ctrl_pressed =
+ QApplication::keyboardModifiers() & Qt::ControlModifier;
+
+ // Clear selection if control is not pressed and this item is unselected
+ if ((!_mouse_down_item || !_mouse_down_item->selected()) &&
+ !ctrl_pressed)
+ for (shared_ptr<RowItem> r : _view)
+ r->select(false);
+
+ // Set the signal selection state if the item has been clicked
+ if (_mouse_down_item) {
+ if (ctrl_pressed)
+ _mouse_down_item->select(!_mouse_down_item->selected());
+ else
+ _mouse_down_item->select(true);
+ }
+
+ // Save the offsets of any signals which will be dragged
+ for (const shared_ptr<RowItem> r : _view)
+ if (r->selected())
+ r->drag();
+
+ selection_changed();
+ update();
+}
+
void Header::mousePressEvent(QMouseEvent *event)
{
assert(event);
- if (event->button() & Qt::LeftButton) {
- _mouse_down_point = event->pos();
+ _mouse_down_point = event->pos();
+ _mouse_down_item = get_mouse_over_row_item(event->pos());
- // Save the offsets of any signals which will be dragged
- for (const shared_ptr<RowItem> r : _view)
- if (r->selected())
- _drag_row_items.push_back(
- make_pair(r, r->v_offset()));
- }
+ if (event->button() & Qt::LeftButton)
+ mouseLeftPressEvent(event);
+}
- // Select the signal if it has been clicked
- const shared_ptr<RowItem> mouse_over_row_item =
+void Header::mouseLeftReleaseEvent(QMouseEvent *event)
+{
+ assert(event);
+
+ const bool ctrl_pressed =
+ QApplication::keyboardModifiers() & Qt::ControlModifier;
+
+ // Unselect everything if control is not pressed
+ const shared_ptr<RowItem> mouse_over =
get_mouse_over_row_item(event->pos());
- if (mouse_over_row_item) {
- if (mouse_over_row_item->selected())
- mouse_over_row_item->select(false);
- else {
- mouse_over_row_item->select(true);
-
- if (~QApplication::keyboardModifiers() &
- Qt::ControlModifier)
- _drag_row_items.clear();
-
- // Add the signal to the drag list
- if (event->button() & Qt::LeftButton)
- _drag_row_items.push_back(
- make_pair(mouse_over_row_item,
- mouse_over_row_item->v_offset()));
- }
- }
- if (~QApplication::keyboardModifiers() & Qt::ControlModifier) {
- // Unselect all other signals because the Ctrl is not
- // pressed
- for (const shared_ptr<RowItem> r : _view)
- if (r != mouse_over_row_item)
- r->select(false);
+ for (auto &r : _view)
+ r->drag_release();
+
+ if (_dragging)
+ _view.normalize_layout();
+ else
+ {
+ if (!ctrl_pressed) {
+ for (shared_ptr<RowItem> r : _view)
+ if (_mouse_down_item != r)
+ r->select(false);
+
+ if (_mouse_down_item)
+ show_popup(_mouse_down_item);
+ }
}
- selection_changed();
- update();
+ _dragging = false;
}
void Header::mouseReleaseEvent(QMouseEvent *event)
{
assert(event);
- if (event->button() == Qt::LeftButton) {
- if (_dragging)
- _view.normalize_layout();
- else
- {
- const shared_ptr<RowItem> mouse_over_row_item =
- get_mouse_over_row_item(event->pos());
- if (mouse_over_row_item)
- show_popup(mouse_over_row_item);
- }
+ if (event->button() & Qt::LeftButton)
+ mouseLeftReleaseEvent(event);
- _dragging = false;
- _drag_row_items.clear();
- }
+ _mouse_down_item = nullptr;
}
void Header::mouseMoveEvent(QMouseEvent *event)
QApplication::startDragDistance())
return;
- // Move the signals if we are dragging
- if (!_drag_row_items.empty())
- {
- _dragging = true;
-
- const int delta = event->pos().y() - _mouse_down_point.y();
-
- for (auto i = _drag_row_items.begin();
- i != _drag_row_items.end(); i++) {
- const std::shared_ptr<RowItem> row_item((*i).first);
- if (row_item) {
- const int y = (*i).second + delta;
- const int y_snap =
- ((y + View::SignalSnapGridSize / 2) /
- View::SignalSnapGridSize) *
- View::SignalSnapGridSize;
- row_item->set_v_offset(y_snap);
-
- // Ensure the trace is selected
- row_item->select();
- }
-
+ // Check all the drag items share a common owner
+ RowItemOwner *item_owner = nullptr;
+ for (shared_ptr<RowItem> r : _view)
+ if (r->dragging()) {
+ if (!item_owner)
+ item_owner = r->owner();
+ else if(item_owner != r->owner())
+ return;
}
- signals_moved();
- }
+ if (!item_owner)
+ return;
+
+ // Do the drag
+ _dragging = true;
+
+ const int delta = event->pos().y() - _mouse_down_point.y();
+
+ for (std::shared_ptr<RowItem> r : _view)
+ if (r->dragging()) {
+ r->set_v_offset(r->drag_point().y() + delta);
+
+ // Ensure the trace is selected
+ r->select();
+ }
+
+ signals_moved();
update();
}