Connection colors

Author: Nico-Duduf

src/duqf-nodeview/duqfconnection.cpp

@@ -114,6 +114,9 @@ void DuQFConnection::init(DuQFSlot *output, DuQFSlot *input, DuQFConnector *conn
     setInput(m_input);
     setOutput(m_output);
 
+    connector->setFromColor(output->color());
+    connector->setToColor(input->color());
+
     connect(connector, &DuQFConnector::removed, this, &DuQFConnection::remove);
 }
 

src/duqf-nodeview/duqfconnector.cpp

@@ -15,6 +15,9 @@ DuQFConnector::DuQFConnector(QString title, QGraphicsItem *parent):
     setFlags(ItemIsSelectable);
 
     m_titleItem->setPlainText(title);
+
+    m_toColor = DuUI::getColor("light-grey");
+    m_fromColor = DuUI::getColor("light-grey");
 }
 
 DuQFConnector::DuQFConnector(QPointF from, QString title)
@@ -113,19 +116,40 @@ void DuQFConnector::paint(QPainter *painter, const QStyleOptionGraphicsItem *opt
 
     painter->save();
 
-    CurveHandles handles = curveHandles();
+    QPainterPath path;
 
     // Create path
-    QPainterPath path( QPointF( m_from.x(), m_from.y() ) );
-    path.cubicTo( handles.from, handles.to, m_to);
+    if (DuSettingsManager::instance()->nodesViewCurvature() < 1) {
+        CurveHandles handles = curveHandles();
+        path = QPainterPath(( QPointF( m_from.x(), m_from.y() ) ));
+        path.cubicTo( handles.from, handles.to, m_to);
+    }
+    else {
+        QPolygonF poly;
+        poly.append(m_from);
+        poly.append(QPointF((m_from.x() + m_to.x()) / 2, m_from.y()));
+        poly.append(QPointF((m_from.x() + m_to.x()) / 2, m_to.y()));
+        poly.append(m_to);
+        path.addPolygon(poly);
+    }
+
 
     // And draw
     painter->setBrush(QBrush(Qt::transparent));
-    QPen pen;
-    if (isSelected()) pen.setColor( DuUI::getColor("light-grey") );
-    else pen.setColor( DuUI::getColor("less-light-grey") );
-    pen.setWidth( m_width );
-    pen.setCapStyle(Qt::RoundCap);
+
+    QLinearGradient gradient(m_from, m_to);
+
+    if (isSelected()) {
+        gradient.setColorAt(0.0, m_fromColor);
+        gradient.setColorAt(0.5, DuUI::getColor("light-grey"));
+        gradient.setColorAt(1.0, m_toColor);
+    }
+    else {
+        gradient.setColorAt(0.0, m_fromColor.darker());
+        gradient.setColorAt(0.5, DuUI::getColor("less-light-grey"));
+        gradient.setColorAt(1.0, m_toColor.darker());
+    }
+    QPen pen(gradient, m_width, Qt::SolidLine, Qt::RoundCap);
     painter->setPen(pen);
 
     painter->drawPath(path);
@@ -235,6 +259,16 @@ void DuQFConnector::updateTitlePos()
     //                    boundingRect().height() / 2 - m_titleItem->boundingRect().height() / 2 + pos().y());
 }
 
+void DuQFConnector::setToColor(const QColor &newToColor)
+{
+    m_toColor = newToColor;
+}
+
+void DuQFConnector::setFromColor(const QColor &newFromColor)
+{
+    m_fromColor = newFromColor;
+}
+
 CurveHandles DuQFConnector::curveHandles(float q) const
 {
     // Get handle coordinates

src/duqf-nodeview/duqfconnector.h

@@ -26,6 +26,10 @@ class DuQFConnector : public QGraphicsObject
     QString title() const;
     void setTitle(const QString &title);
 
+    void setFromColor(const QColor &newFromColor);
+
+    void setToColor(const QColor &newToColor);
+
 public slots:
     void setTo(const QPointF &to);
     void setFrom(const QPointF &from);
@@ -50,6 +54,9 @@ public slots:
     QPointF m_to;
     qreal m_width;
 
+    QColor m_fromColor;
+    QColor m_toColor;
+
     // Appearance
     int m_cornerRadius = 5;
     int m_padding = 5;

src/duqf-nodeview/duqfslot.cpp

@@ -95,6 +95,11 @@ void DuQFSlot::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
     update();
 }
 
+QColor DuQFSlot::color() const
+{
+    return m_color;
+}
+
 DuQFSlot::SlotType DuQFSlot::slotType() const
 {
     return m_slotType;

src/duqf-nodeview/duqfslot.h

@@ -33,6 +33,8 @@ class DuQFSlot : public QGraphicsObject
     SlotType slotType() const;
     void setSlotType(const SlotType &slotType);
 
+    QColor color() const;
+
 public slots:
     void remove();