nodeview: added ctrl+scroll zooming

2020-03-30 01:27:10 +11:00
parent 7bca61608a
commit 2bfe9f44df
2 changed files with 15 additions and 0 deletions
@@ -41,6 +41,7 @@ NodeView::NodeView(QWidget *parent) :
  connect(this, &NodeView::customContextMenuRequested, this, &NodeView::ShowContextMenu);

  setMouseTracking(true);
+  setRenderHint(QPainter::Antialiasing);
 }

 NodeView::~NodeView()
@@ -273,6 +274,18 @@ void NodeView::mouseMoveEvent(QMouseEvent *event)
  }
 }

+void NodeView::wheelEvent(QWheelEvent *event)
+{
+  if (event->modifiers() & Qt::ControlModifier) {
+    // FIXME: Hardcoded divider (0.001)
+    qreal multiplier = 1.0 + (static_cast<qreal>(event->delta()) * 0.001);
+
+    scale(multiplier, multiplier);
+  } else {
+    QWidget::wheelEvent(event);
+  }
+}
+
 void NodeView::SceneSelectionChangedSlot()
 {
  emit SelectionChanged(scene_.GetSelectedNodes());