Init

graphicsviewmod.cpp

@@ -0,0 +1,129 @@
+#include "graphicsviewmod.h"
+
+
+GraphicsViewMod::GraphicsViewMod(QWidget *parent):QGraphicsView(parent)
+{
+    setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
+    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    scMeter = 1;
+    ugR = ugL = numT = 0;
+
+}
+
+
+void GraphicsViewMod::drawBackground(QPainter *painter, const QRectF &rect)
+{
+
+    painter->save();
+    painter->setBrush(QBrush(Qt::black));
+    painter->drawRect(rect);
+    painter->restore();
+
+    painter->setBackground(QBrush(Qt::black));
+    painter->setBackground(QBrush(Qt::SolidPattern));
+
+    QPen p = painter->pen();
+    painter->setPen(QColor(Qt::lightGray));
+
+
+    qreal d = 30;
+    qreal rad = height()/2 - d;
+    QPointF cent=QPointF(width()/2, height()/2);
+    QRect cr = QRect(cent.x()-rad, cent.y()-rad, rad*2, rad*2);
+
+
+
+    painter->drawEllipse(mapToScene(QPolygon(cr)).boundingRect());
+
+    qreal lx1, lx2, ly1, ly2;
+    qreal phi;
+    qreal lin = 2;
+    QPolygonF poly;
+    QString str;
+    QFont f  = painter->font();
+
+    cr.setSize(QSize(1,1));
+    qreal fs = mapToScene(cr).boundingRect().height();
+
+    f.setPointSizeF(fs*10);
+    painter->setFont(f);
+
+
+    for (int i=0; i<60; i++)
+    {
+        phi = 2*M_PI/60*i;
+
+        lx1=(rad-lin)*sin(phi)+cent.x();
+        ly1=-(rad-lin)*cos(phi)+cent.y();
+
+        lx2 = lx1+2*lin*sin(phi);
+        ly2 = ly1-2*lin*cos(phi);
+
+        poly.clear();
+        poly << mapToScene(QPoint(lx1, ly1)) << mapToScene(QPoint(lx2, ly2));
+        painter->drawPolygon(poly);
+
+        lx2 = lx1+6*lin*sin(phi)-4;
+        ly2 = ly1-6*lin*cos(phi)+4;
+
+
+        str = QString::number(i);
+
+
+        painter->drawText(mapToScene(QPoint(lx2, ly2)), str);
+
+    }
+
+
+    int du, mdu;
+    str.clear();
+    if (ugL<0){  str.append("-");}
+
+        du = abs(ugL)/100; mdu = abs(ugL)%100;
+        if (du<10) str.append("0");
+        str.append(QString::number(du));
+        str.append("-");
+        if (mdu<10) str.append("0");
+        str.append(QString::number(mdu));
+
+    painter->drawText(mapToScene(QPoint(width()-45, 22)), str);
+
+    str.clear();
+    if (ugR<0) { str.append("-");}
+
+        du = abs(ugR)/100; mdu = abs(ugR)%100;
+        if (du<10) str.append("0");
+        str.append(QString::number(du));
+        str.append("-");
+        if (mdu<10) str.append("0");
+        str.append(QString::number(mdu));
+
+    painter->drawText(mapToScene(QPoint(width()-45, 33)), str);
+
+    if (numT<0) numT = 0;
+    str.setNum(numT);
+    painter->drawText(mapToScene(QPoint(width()-45, 44)), str);
+
+//    str.setNum(scMeter);
+//    painter->drawText(mapToScene(QPoint(cent.x()+40,cent.y()+40)), str);
+
+
+}
+
+
+
+
+void GraphicsViewMod::wheelEvent(QWheelEvent *e)
+{
+    int num = e->delta()/120;
+    if (num!=0)
+    {
+
+
+    }
+
+    e->accept();
+    centerOn(0,0);
+
+}