[Kst] branches/work/kst/portto4/kst/src/libkstapp

[Mike Fenton]

SVN commit 915790 by fenton:

Add reference point 'c' mode.


 M  +25 -1     plotrenderitem.cpp  
 M  +3 -0      plotrenderitem.h  


--- branches/work/kst/portto4/kst/src/libkstapp/plotrenderitem.cpp #915789:915790
@@ -33,7 +33,7 @@
 namespace Kst {
 
 PlotRenderItem::PlotRenderItem(PlotItem *parentItem)
-  : ViewItem(parentItem->parentView()) {
+  : ViewItem(parentItem->parentView()), _referencePointMode(false) {
 
   setName(tr("Plot Render"));
   setZValue(PLOTRENDER_ZVALUE);
@@ -206,6 +206,8 @@
 
   painter->restore();
 
+  paintReferencePoint(painter);
+
   if (!parentView()->isPrinting()) {
     if (_selectionRect.isValid()) {
       painter->setPen(QPen(QBrush(Qt::black), 1.0, Qt::DotLine));
@@ -243,6 +245,17 @@
 }
 
 
+void PlotRenderItem::paintReferencePoint(QPainter *painter) {
+  if (_referencePointMode && plotItem()->projectionRect().contains(_referencePoint)) {
+    QPointF point = plotItem()->mapToPlot(_referencePoint);
+    painter->save();
+    painter->setPen(QPen(QColor("gray"), 1));
+    CurvePointSymbol::draw(7, painter, point.x(), point.y(), 1);
+    painter->restore();
+  }
+}
+
+
 QString PlotRenderItem::leftLabel() const {
   // This will make sense once curves learn
   // to return <Quantity> [<Units>]
@@ -296,6 +309,17 @@
     _selectionRect.setFrom(QPointF(_lastPos.x(), rect().top()));
     _selectionRect.setTo(QPointF(_lastPos.x(), rect().bottom()));
   }
+
+  if (event->key() == Qt::Key_C) {
+    if (modifiers & Qt::ShiftModifier) {
+      _referencePointMode = false;
+    } else {
+      _referencePointMode = true;
+      _referencePoint = plotItem()->mapToProjection(_lastPos);
+      update();
+    }
+  }
+
   ViewItem::keyPressEvent(event);
 
   updateSelectionRect();
--- branches/work/kst/portto4/kst/src/libkstapp/plotrenderitem.h #915789:915790
@@ -52,6 +52,7 @@
     virtual void saveInPlot(QXmlStreamWriter &xml);
     virtual void paint(QPainter *painter);
     virtual void paintRelations(QPainter *painter) = 0;
+    void paintReferencePoint(QPainter *painter);
 
     virtual bool configureFromXml(QXmlStreamReader &xml, ObjectStore *store);
 
@@ -116,6 +117,8 @@
   private:
     RenderType _type;
     QPointF _lastPos;
+    bool _referencePointMode;
+    QPointF _referencePoint;
 
     RelationList _relationList;
     SelectionRect _selectionRect;