Working on custom ndoes and ports

Author: Davide Faconti

bt_editor/XML_utilities.cpp

@@ -62,6 +62,10 @@ NodeModel buildTreeNodeModelFromXML(const QDomElement& node)
             {
                 port_model.type_name = port_element.attribute("type");
             }
+            if( port_element.hasAttribute("default") )
+            {
+                port_model.default_value = port_element.attribute("default");
+            }
 
             if( port_element.hasAttribute("name") )
             {

bt_editor/bt_editor_base.cpp

@@ -218,5 +218,6 @@ PortModel &PortModel::operator =(const BT::PortInfo &src)
     this->direction = src.direction();
     this->description = QString::fromStdString(src.description());
     this->type_name = QString::fromStdString(BT::demangle(src.type()));
+    this->default_value = QString::fromStdString( src.defaultValue());
     return *this;
 }

bt_editor/graphic_container.cpp

@@ -165,9 +165,17 @@ void GraphicContainer::nodeReorder()
 void GraphicContainer::zoomHomeView()
 {
     QRectF rect = _scene->itemsBoundingRect();
+    rect.setBottom( rect.top() + rect.height()* 1.2 );
+
+    const int min_height = 300;
+    if( rect.height() < min_height )
+    {
+        rect.setBottom( rect.top() + min_height );
+    }
+
     _view->setSceneRect (rect);
     _view->fitInView(rect, Qt::KeepAspectRatio);
-    _view->scale(0.7, 0.7);
+    _view->scale(0.9, 0.9);
 }
 
 bool GraphicContainer::containsValidTree() const

bt_editor/mainwindow.cpp

@@ -38,7 +38,6 @@ using QtNodes::FlowScene;
 using QtNodes::NodeGraphicsObject;
 using QtNodes::NodeState;
 
-
 MainWindow::MainWindow(GraphicMode initial_mode, QWidget *parent) :
     QMainWindow(parent),
     ui(new Ui::MainWindow),
@@ -119,9 +118,6 @@ MainWindow::MainWindow(GraphicMode initial_mode, QWidget *parent) :
     ui->splitter->setStretchFactor(0, 1);
     ui->splitter->setStretchFactor(1, 4);
 
-    createTab("BehaviorTree");
-    onTabSetMainTree(0);
-
     QShortcut* undo_shortcut = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Z), this);
     connect( undo_shortcut, &QShortcut::activated, this, &MainWindow::onUndoInvoked );
 
@@ -160,12 +156,22 @@ MainWindow::MainWindow(GraphicMode initial_mode, QWidget *parent) :
     connect( _monitor_widget, &SidepanelMonitor::loadBehaviorTree,
              this, &MainWindow::onCreateAbsBehaviorTree );
 #endif
-    onSceneChanged();
 
     ui->tabWidget->tabBar()->setContextMenuPolicy(Qt::CustomContextMenu);
     connect( ui->tabWidget->tabBar(), &QTabBar::customContextMenuRequested,
              this, &MainWindow::onTabCustomContextMenuRequested);
+}
 
+void MainWindow::showEvent( QShowEvent* )
+{
+    init();
+}
+
+void MainWindow::init()
+{
+    createTab("BehaviorTree");
+    onTabSetMainTree(0);
+    onSceneChanged();
     _current_state = saveCurrentState();
 }
 
@@ -204,11 +210,7 @@ GraphicContainer* MainWindow::createTab(const QString &name)
     ui->tabWidget->addTab( ti->view(), name );
 
     ti->scene()->createNodeAtPos( "Root", "Root", QPointF(-30,-30) );
-
-    QRectF rect( QPointF(-20, -20), QPointF(20, 20) );
-    ti->view()->setSceneRect (rect);
-    ti->view()->fitInView(rect, Qt::KeepAspectRatio);
-    ti->view()->setTransform(QTransform(1.5, 0, 0, 1.5, 0, 0));
+    ti->zoomHomeView();
 
     //--------------------------------
 
@@ -227,8 +229,6 @@ GraphicContainer* MainWindow::createTab(const QString &name)
     connect( ti, &GraphicContainer::addNewModel,
              this, &MainWindow::onAddToModelRegistry);
 
-    //--------------------------------
-
     return ti;
 }
 
@@ -470,7 +470,14 @@ QString MainWindow::saveToXML() const
                 }
 
                 port_element.setAttribute("name", port_name );
-                port_element.setAttribute("type", port.type_name );
+                if( port.type_name.isEmpty() == false)
+                {
+                    port_element.setAttribute("type", port.type_name );
+                }
+                if( port.default_value.isEmpty() == false)
+                {
+                    port_element.setAttribute("default", port.default_value );
+                }
 
                 if( !port.description.isEmpty() )
                 {

bt_editor/mainwindow.h

@@ -126,6 +126,10 @@ private slots:
 
 private:
 
+    void showEvent(QShowEvent*) override;
+
+    void init();
+
     void updateCurrentMode();
 
     void lockEditing(const bool locked);

depend/BehaviorTree.CPP

@@ -0,0 +1,25 @@
+<root main_tree_to_execute="BehaviorTree">
+    <!-- ////////// -->
+    <BehaviorTree ID="BehaviorTree">
+        <Sequence>
+            <Action input="42" ID="Action_A"/>
+            <Condition result="69" ID="Condition_B"/>
+            <SubTree ID="LotOfStuff" res="200" param="100"/>
+        </Sequence>
+    </BehaviorTree>
+    <!-- ////////// -->
+    <TreeNodesModel>
+        <Action ID="Action_A">
+            <input_port default="42" name="input">interesting</input_port>
+        </Action>
+        <Condition ID="Condition_B">
+            <output_port default="69" name="result">Cool</output_port>
+        </Condition>
+        <SubTree ID="LotOfStuff">
+            <input_port name="param"/>
+            <output_port name="res"/>
+        </SubTree>
+    </TreeNodesModel>
+    <!-- ////////// -->
+</root>
+