began node work

ui/mainwindow.cpp

@@ -148,6 +148,7 @@ void MainWindow::setup_layout(bool reset) {
 
     addDockWidget(Qt::TopDockWidgetArea, panel_project.first());
     addDockWidget(Qt::TopDockWidgetArea, panel_graph_editor);
+    addDockWidget(Qt::TopDockWidgetArea, panel_node_editor);
     addDockWidget(Qt::TopDockWidgetArea, panel_footage_viewer);
     tabifyDockWidget(panel_footage_viewer, panel_effect_controls);
     panel_footage_viewer->raise();
@@ -160,6 +161,7 @@ void MainWindow::setup_layout(bool reset) {
     panel_sequence_viewer->show();
     panel_timeline.first()->show();
     panel_graph_editor->hide();
+    panel_node_editor->hide();
 
     panel_project.first()->setFloating(false);
     panel_effect_controls->setFloating(false);
@@ -167,6 +169,7 @@ void MainWindow::setup_layout(bool reset) {
     panel_sequence_viewer->setFloating(false);
     panel_timeline.first()->setFloating(false);
     panel_graph_editor->setFloating(true);
+    panel_node_editor->setFloating(true);
 
     resizeDocks({panel_project.first(), panel_footage_viewer, panel_sequence_viewer},
                 {width()/3, width()/3, width()/3},
@@ -694,6 +697,10 @@ void MainWindow::setup_menus() {
   window_graph_editor_action->setCheckable(true);
   window_graph_editor_action->setData(reinterpret_cast<quintptr>(panel_graph_editor));
 
+  window_node_editor_action = MenuHelper::create_menu_action(window_menu, "panelnodeeditor", this, SLOT(toggle_panel_visibility()));
+  window_node_editor_action->setCheckable(true);
+  window_node_editor_action->setData(reinterpret_cast<quintptr>(panel_node_editor));
+
   window_footageviewer_action = MenuHelper::create_menu_action(window_menu, "panelfootageviewer", this, SLOT(toggle_panel_visibility()));
   window_footageviewer_action->setCheckable(true);
   window_footageviewer_action->setData(reinterpret_cast<quintptr>(panel_footage_viewer));
@@ -887,6 +894,7 @@ void MainWindow::Retranslate()
   window_effectcontrols_action->setText(tr("Effect Controls"));
   window_timeline_action->setText(tr("Timeline"));
   window_graph_editor_action->setText(tr("Graph Editor"));
+  window_node_editor_action->setText(tr("Node Editor"));
   window_footageviewer_action->setText(tr("Media Viewer"));
   window_sequenceviewer_action->setText(tr("Sequence Viewer"));
 

ui/mainwindow.h

@@ -308,6 +308,7 @@ private:
   QAction* window_effectcontrols_action;
   QAction* window_timeline_action;
   QAction* window_graph_editor_action;
+  QAction* window_node_editor_action;
   QAction* window_footageviewer_action;
   QAction* window_sequenceviewer_action;
 

ui/nodeview.cpp

@@ -0,0 +1,35 @@
+#include "nodeview.h"
+
+#include <QWheelEvent>
+#include <QDebug>
+
+NodeView::NodeView(QGraphicsScene *scene, QWidget *parent) :
+  QGraphicsView(scene, parent),
+  hand_moving_(false)
+{
+  setMouseTracking(true);
+  setWindowTitle(tr("Node Editor"));
+}
+
+void NodeView::mousePressEvent(QMouseEvent *event)
+{
+  QGraphicsView::mousePressEvent(event);
+}
+
+void NodeView::mouseMoveEvent(QMouseEvent *event)
+{
+  QGraphicsView::mouseMoveEvent(event);
+}
+
+void NodeView::mouseReleaseEvent(QMouseEvent *event)
+{
+}
+
+void NodeView::wheelEvent(QWheelEvent *event)
+{
+  if (event->angleDelta().y() > 0) {
+    scale(0.9, 0.9);
+  } else {
+    scale(1.1, 1.1);
+  }
+}

ui/nodeview.h

@@ -0,0 +1,23 @@
+#ifndef NODEVIEW_H
+#define NODEVIEW_H
+
+#include <QGraphicsView>
+
+class NodeView : public QGraphicsView {
+  Q_OBJECT
+public:
+  NodeView(QGraphicsScene *scene, QWidget* parent = nullptr);
+
+protected:
+  virtual void mousePressEvent(QMouseEvent *event) override;
+  virtual void mouseMoveEvent(QMouseEvent *event) override;
+  virtual void mouseReleaseEvent(QMouseEvent *event) override;
+  virtual void wheelEvent(QWheelEvent *event) override;
+
+private:
+  bool hand_moving_;
+  QPoint drag_start_;
+
+};
+
+#endif // NODEVIEW_H