Fix scaling for ViewSymbol

src/Mod/TechDraw/Gui/QGCustomSvg.cpp

@@ -26,6 +26,8 @@
 #include <QStyleOptionGraphicsItem>
 #endif
 
+#include <Base/Console.h>
+
 #include <QRectF>
 #include "QGCustomSvg.h"
 
@@ -37,6 +39,7 @@ QGCustomSvg::QGCustomSvg()
     setAcceptHoverEvents(false);
     setFlag(QGraphicsItem::ItemIsSelectable, false);
     setFlag(QGraphicsItem::ItemIsMovable, false);
+    setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
 
     m_svgRender = new QSvgRenderer();
 }
@@ -69,10 +72,20 @@ void QGCustomSvg::centerAt(double cX, double cY)
 bool QGCustomSvg::load(QByteArray *svgBytes)
 {
     bool success = m_svgRender->load(*svgBytes);
+    prepareGeometryChange();
     setSharedRenderer(m_svgRender);
     return(success);
 }
 
+QRectF QGCustomSvg::boundingRect() const
+{
+    QRectF box = m_svgRender->viewBoxF();
+    double w = box.width();
+    double h = box.height();
+    QRectF newRect(0,0,w*scale(),h*scale());
+    return newRect.adjusted(-1.,-1.,1.,1.);
+}
+
 void QGCustomSvg::paint ( QPainter * painter, const QStyleOptionGraphicsItem * option, QWidget * widget) {
     QStyleOptionGraphicsItem myOption(*option);
     myOption.state &= ~QStyle::State_Selected;

src/Mod/TechDraw/Gui/QGCustomSvg.h

@@ -50,6 +50,7 @@ public:
     virtual void centerAt(QPointF centerPos);
     virtual void centerAt(double cX, double cY);
     virtual bool load(QByteArray *svgString);
+    virtual QRectF boundingRect(void) const override;
 
 protected:
     QSvgRenderer *m_svgRender;

src/Mod/TechDraw/Gui/QGIView.cpp

@@ -290,7 +290,6 @@ void QGIView::draw()
 
 void QGIView::drawBorder()
 {
-    prepareGeometryChange();
     if (!borderVisible) {
          m_label.hide();
          m_border.hide();
@@ -332,6 +331,7 @@ void QGIView::drawBorder()
                               displayArea.top(),
                               frameWidth,
                               frameHeight);
+    prepareGeometryChange();
     m_border.setRect(frameArea);
     m_border.setPos(0.,0.);
 

src/Mod/TechDraw/Gui/QGIViewSymbol.cpp

@@ -31,9 +31,10 @@
 #include <QMouseEvent>
 #include <QString>
 #include <sstream>
+#include <QRectF>
 #endif
 
-#include <qmath.h>
+//#include <qmath.h>
 
 #include <App/Application.h>
 #include <App/Material.h>
@@ -54,6 +55,7 @@ QGIViewSymbol::QGIViewSymbol()
     setAcceptHoverEvents(true);
     setFlag(QGraphicsItem::ItemIsMovable, true);
     setFlag(QGraphicsItem::ItemIsSelectable, true);
+    setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
 
     m_svgItem = new QGCustomSvg();
     addToGroup(m_svgItem);
@@ -103,10 +105,6 @@ void QGIViewSymbol::draw()
         return;
     }
 
-//note: svg's are overscaled by (72 pixels(pts actually) /in)*(1 in/25.4 mm) = 2.834645669   (could be 96/25.4(CSS)? 110/25.4?)
-//due to 1 sceneUnit (1mm) = 1 pixel for some QtSvg functions
-    TechDraw::DrawViewSymbol *viewSymbol = dynamic_cast<TechDraw::DrawViewSymbol *>(getViewObject());
-    setScale(viewSymbol->Scale.getValue());
     drawSvg();
     if (borderVisible) {
         drawBorder();
@@ -119,9 +117,12 @@ void QGIViewSymbol::drawSvg()
         return;
 
     TechDraw::DrawViewSymbol *viewSymbol = dynamic_cast<TechDraw::DrawViewSymbol *>(getViewObject());
+//note: svg's are overscaled by (72 pixels(pts actually) /in)*(1 in/25.4 mm) = 2.834645669   (could be 96/25.4(CSS)? 110/25.4?)
+//due to 1 sceneUnit (1mm) = 1 pixel for some QtSvg functions
+
+    m_svgItem->setScale(viewSymbol->Scale.getValue());
 
     QString qs(QString::fromUtf8(viewSymbol->Symbol.getValue()));
-
     symbolToSvg(qs);
 }
 
@@ -133,9 +134,9 @@ void QGIViewSymbol::symbolToSvg(QString qs)
 
     QByteArray qba;
     qba.append(qs);
+    prepareGeometryChange();
     if (!m_svgItem->load(&qba)) {
         Base::Console().Error("Error - Could not load Symbol into SVG renderer for %s\n", getViewObject()->getNameInDocument());
     }
     m_svgItem->setPos(0.,0.);
 }
-