void DrawShapes(QPainter painter)
        {
            painter.SetRenderHint(QPainter.RenderHint.Antialiasing);
            painter.Pen   = new QPen(new QBrush(new QColor("Gray")), 1);
            painter.Brush = new QColor("Gray");

            var path = new QPainterPath();

            path.MoveTo(5, 5);
            path.CubicTo(40, 5, 50, 50, 99, 99);
            path.CubicTo(5, 99, 50, 50, 5, 5);
            painter.DrawPath(path);

            painter.DrawPie(130, 20, 90, 60, 30 * 16, 120 * 16);
            painter.DrawChord(240, 30, 90, 60, 0, 16 * 180);
            var rectangle = new QRect(new QPoint(20, 120), new QSize(80, 50));

            painter.DrawRoundedRect(rect: rectangle, xRadius: 10, yRadius: 10);

            // to be implemented
            //var points = new List<QPoint>();
            //points.Add ( new QPoint ( 130, 140 ) );
            //points.Add ( new QPoint ( 180, 170 ) );
            //points.Add ( new QPoint ( 180, 140 ) );
            //points.Add ( new QPoint ( 220, 110 ) );
            //points.Add ( new QPoint ( 140, 100 ) );

            //// http://doc.qt.io/qt-5/qpolygon.html#QPolygon-2 , we should be able to pase point list
            //var polygon = new QPolygon(points);
            //painter.DrawPolygon ( polygon );

            // this is workaround for DrawPolygon
            unsafe
            {
                var polygon = new QPolygon();
                var points  = new int[] { 130, 140, 180, 170, 180, 140, 220, 110, 140, 100 };
                fixed(int *point = points)
                {
                    polygon.SetPoints(points.Length / 2, ref *point);
                }

                painter.DrawPolygon(polygon);
            }

            painter.DrawRect(250, 110, 60, 60);

            var baseline  = new QPointF(20, 250);
            var font      = new QFont("Georgia", 55);
            var forntPath = new QPainterPath();

            forntPath.AddText(baseline, font, "Q");
            painter.DrawPath(forntPath);

            painter.DrawEllipse(140, 200, 60, 60);
            painter.DrawEllipse(240, 200, 90, 60);
        }
Exemple #2
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    public override void Paint(QPainter painter, QStyleOptionGraphicsItem option, QWidget widget)
    {
        // Body
        painter.SetBrush(color);
        painter.DrawEllipse(-10, -20, 20, 40);

        // Eyes
        painter.SetBrush(Qt.GlobalColor.white);
        painter.DrawEllipse(-10, -17, 8, 8);
        painter.DrawEllipse(2, -17, 8, 8);

        // Nose
        painter.SetBrush(Qt.GlobalColor.black);
        painter.DrawEllipse(new QRectF(-2, -22, 4, 4));

        // Pupils
        painter.DrawEllipse(new QRectF(-8.0 + mouseEyeDirection, -17, 4, 4));
        painter.DrawEllipse(new QRectF(4.0 + mouseEyeDirection, -17, 4, 4));

        // Ears
        painter.SetBrush(Scene().CollidingItems(this).Count == 0 ? Qt.GlobalColor.darkYellow : Qt.GlobalColor.red);
        painter.DrawEllipse(-17, -12, 16, 16);
        painter.DrawEllipse(1, -12, 16, 16);

        // Tail
        QPainterPath path = new QPainterPath(new QPointF(0, 20));

        path.CubicTo(-5, 22, -5, 22, 0, 25);
        path.CubicTo(5, 27, 5, 32, 0, 30);
        path.CubicTo(-5, 32, -5, 42, 0, 35);
        painter.SetBrush(Qt.BrushStyle.NoBrush);
        painter.DrawPath(path);
    }