Example #1
0
 public MainWindow()
     : base("MainWindow")
 {
     // create the table and pack into the window
     Table table = new Table(2, 3, false);
     Add(table);
     // Initialze DGraphics
     GTKHelper.InitGraphics();
     // create DViewerControl and attach to table
     GTKViewerControl dvc = new GTKViewerControl();
     table.Attach(dvc, 0, 1, 0, 1, AttachOptions.Fill | AttachOptions.Expand,
                  AttachOptions.Fill | AttachOptions.Expand, 0, 0);
     // create the scrollbars and pack into the table
     VScrollbar vsb = new VScrollbar(null);
     table.Attach(vsb, 1, 2, 0, 1, AttachOptions.Fill|AttachOptions.Shrink,
                  AttachOptions.Fill|AttachOptions.Shrink, 0, 0);
     HScrollbar hsb = new HScrollbar(null);
     table.Attach(hsb, 0, 1, 1, 2, AttachOptions.Fill|AttachOptions.Shrink,
                  AttachOptions.Fill|AttachOptions.Shrink, 0, 0);
     // tell the scrollbars to use the DViewerControl widget's adjustments
     vsb.Adjustment = dvc.Vadjustment;
     hsb.Adjustment = dvc.Hadjustment;
     // create debuging label
     l = new Label("debug");
     table.Attach(l, 0, 1, 2, 3, AttachOptions.Fill|AttachOptions.Shrink,
                  AttachOptions.Fill|AttachOptions.Shrink, 0, 0);
     // create DViewer and DEngine
     dv = new GTKViewer(dvc);
     dv.EditFigures = true;
     #if DEBUG
     dv.DebugMessage += new DebugMessageHandler(DebugMessage);
     #endif
     de = new DEngine(null);
     de.AddViewer(dv);
     de.HsmState = DHsmState.Select;
     #if DEBUG
     de.DebugMessage += new DebugMessageHandler(DebugMessage);
     #endif
     de.ContextClick += new ClickHandler(de_ContextClick);
     // add figures
     de.UndoRedo.Start("add initial figures");
     de.AddFigure(new EllipseFigure(new DRect(20, 30, 100, 100), 0));
     RectFigure rf = new RectFigure(new DRect(10, 20, 100, 100), 0);
     rf.Alpha = 0.7;
     rf.Fill = new DColor(80, 80, 80);
     de.AddFigure(rf);
     TextFigure tf = new TextFigure(new DPoint(150, 30), "hello", 0);
     tf.FontName = "Arial";
     tf.Underline = true;
     tf.Strikethrough = true;
     tf.Italics = true;
     de.AddFigure(tf);
     // compositing figure
     Figure f = new CompositedExampleFigure();
     f.Rect = new DRect(20, 150, 50, 50);
     de.AddFigure(f);
     // clock (IEditable) figure
     f = new ClockFigure();
     f.Rect = new DRect(200, 200, 100, 100);
     de.AddFigure(f);
     // triangle figure
     f = new TriangleFigure();
     f.Rect = new DRect(200, 100, 100, 100);
     ((TriangleFigure)f).StrokeWidth = 10;
     de.AddFigure(f);
     // line figure
     f = new LineFigure2(new DPoint(100, 100), new DPoint(200, 200));
     ((LineFigure2)f).StrokeStyle = DStrokeStyle.DashDot;
     ((LineFigure2)f).StrokeWidth = 5;
     de.AddFigure(f);
     de.UndoRedo.Commit();
     de.UndoRedo.ClearHistory();
     // resize window
     Resize(400, 300);
 }
Example #2
0
        Figure SvgElementToFigure(SvgElement e)
        {
            Figure f = null;

            if (e is SvgRectElement || e is SvgImageElement)
            {
                if (e.Attributes.ContainsKey("x") && e.Attributes.ContainsKey("y") &&
                    e.Attributes.ContainsKey("width") && e.Attributes.ContainsKey("height"))
                {
                    SvgLength X = new SvgLength((string)e.Attributes["x"]);
                    SvgLength Y = new SvgLength((string)e.Attributes["y"]);
                    SvgLength Width = new SvgLength((string)e.Attributes["width"]);
                    SvgLength Height = new SvgLength((string)e.Attributes["height"]);
                    DRect r = new DRect(X.Value, Y.Value, Width.Value, Height.Value);
                    if (e is SvgRectElement)
                        f = new RectFigure(r, 0);
                    else if (e is SvgImageElement)
                    {
                        SvgImageElement e2 = (SvgImageElement)e;
                        byte[] imgData = Read(e2.Href);
                        if (imgData != null)
                            f = new BitmapFigure(r, 0, imgData, Path.GetFileName(e2.Href));
                    }
                }
            }
            else if (e is SvgEllipseElement)
            {
                SvgEllipseElement e2 = (SvgEllipseElement)e;
                if (e2.Attributes.ContainsKey("cx") && e2.Attributes.ContainsKey("cy") &&
                     e2.Attributes.ContainsKey("rx") && e2.Attributes.ContainsKey("ry"))
                {
                    e2.CX = new SvgLength((string)e2.Attributes["cx"]);
                    e2.CY = new SvgLength((string)e2.Attributes["cy"]);
                    e2.RX = new SvgLength((string)e2.Attributes["rx"]);
                    e2.RY = new SvgLength((string)e2.Attributes["ry"]);
                    f = new EllipseFigure(new DRect(e2.CX.Value - e2.RX.Value, e2.CY.Value - e2.RY.Value,
                        e2.RX.Value * 2, e2.RY.Value * 2), 0);
                }
            }
            else if (e is SvgPathElement)
            {
                SvgPathElement e2 = (SvgPathElement)e;
                if (e2.Attributes.ContainsKey("d"))
                {
                    e2.D = new SvgPath((string)e2.Attributes["d"]);
                    // treat all paths as polygons for the moment
                    DPoints pts = new DPoints();
                    for (int i = 0; i < e2.D.Count; i++)
                    {
                        PathSeg s = e2.D[i];
                        if ((s.Type == SvgPathSegType.SVG_SEGTYPE_MOVETO || s.Type == SvgPathSegType.SVG_SEGTYPE_LINETO) &&
                            s.Abs)
                            pts.Add(new DPoint(s.Data[0], s.Data[1]));
                    }
                    if (pts.Count >= 3)
                    {
                        DRect r = pts.Bounds();
                        foreach (DPoint pt in pts)
                        {
                            pt.X = (pt.X - r.Left) / r.Width;
                            pt.Y = (pt.Y - r.Top) / r.Height;
                        }
                        f = new PolygonFigure(pts);
                        f.Rect = r;
                    }
                }
            }
            else if (e is SvgPolylineElement)
            {
                SvgPolylineElement e2 = (SvgPolylineElement)e;
                if (e2.Attributes.ContainsKey("points"))
                    f = new PolylineFigure(DPoints.FromString((string)e2.Attributes["points"]));
            }
            else if (e is SvgLineElement)
            {
                SvgLineElement e2 = (SvgLineElement)e;
                if (e2.Attributes.ContainsKey("x1") && e2.Attributes.ContainsKey("y1") &&
                     e2.Attributes.ContainsKey("x2") && e2.Attributes.ContainsKey("y2"))
                {
                    e2.X1 = new SvgLength((string)e2.Attributes["x1"]);
                    e2.Y1 = new SvgLength((string)e2.Attributes["y1"]);
                    e2.X2 = new SvgLength((string)e2.Attributes["x2"]);
                    e2.Y2 = new SvgLength((string)e2.Attributes["y2"]);

                    f = new LineFigure2(new DPoint(e2.X1.Value, e2.Y1.Value),
                                            new DPoint(e2.X2.Value, e2.Y2.Value));
                }
            }
            else if (e is SvgGroupElement)
            {
                SvgGroupElement e2 = (SvgGroupElement)e;
                f = new GroupFigure();
                GroupFigure gf = (GroupFigure)f;
                foreach (SvgElement childEle in e2.Children)
                {
                    Figure childFig = SvgElementToFigure(childEle);
                    if (childFig != null)
                        gf.ChildFigures.Add(childFig);
                }
                if (gf.ChildFigures.Count > 0)
                    gf.ChildFigures = gf.ChildFigures;
                else
                    f = null;
            }
            else if (e is SvgTextElement)
            {
                double fontSize;
                string fontFamily;
                DColor fill;
                bool bold, italic, underline;
                string text = ExtractText(e, 0, out fontSize, out fontFamily, out fill, out bold, out italic, out underline);
                while (text.EndsWith("\n"))
                    text = text.Substring(0, text.Length - 1);
                if (text != null)
                {
                    DPoint translation = GetSvgElementTranslation((SvgTextElement)e);
                    f = new TextFigure(translation, text, 0);
                    ((TextFigure)f).FontSize = fontSize;
                    ((TextFigure)f).FontName = fontFamily;
                    ((TextFigure)f).Fill = fill;
                    ((TextFigure)f).Bold = bold;
                    ((TextFigure)f).Italics = italic;
                    ((TextFigure)f).Underline = underline;
                    // set wrap threshold
                    const double editWidthMod = 1.435;
                    if (((SvgTextElement)e).Attributes.ContainsKey(NBTextEditWidth))
                    {
                        string editwidth = (string)((SvgTextElement)e).Attributes[NBTextEditWidth];
                        if (editwidth != null && editwidth.Length != 0)
                        {
                            ((TextFigure)f).WrapThreshold = double.Parse(editwidth) * editWidthMod;
                            ((TextFigure)f).WrapFontSize = ((TextFigure)f).FontSize;
                            ((TextFigure)f).WrapText = true;
                        }
                    }
                    // scale
                    DPoint scale = GetSvgElementScale((SvgTextElement)e);
                    const double scaleMod = 0.694;
                    f.Width *= scale.X * scaleMod;
                    f.Height *= scale.Y * scaleMod;
                }
            }

            if (f != null)
            {
                if (e is SvgStyledTransformedElement)
                    f.Rotation = GetSvgElementRotation((SvgStyledTransformedElement)e);
                if (f is IFillable && e.Attributes.ContainsKey("fill"))
                    ((IFillable)f).Fill = DColor.FromHtml((string)e.Attributes["fill"]);
                if (f is IStrokeable)
                {
                    if (e.Attributes.ContainsKey("stroke"))
                        ((IStrokeable)f).Stroke = DColor.FromHtml((string)e.Attributes["stroke"]);
                    if (e.Attributes.ContainsKey("stroke-width"))
                        ((IStrokeable)f).StrokeWidth = double.Parse((string)e.Attributes["stroke-width"]);
                    if (e.Attributes.ContainsKey("stroke-dasharray"))
                        ((IStrokeable)f).StrokeStyle = NotebookDashArrayToStrokeStyle((string)e.Attributes["stroke-dasharray"]);
                }
                if (f is IMarkable)
                {
                    if (e.Attributes.ContainsKey("marker-start"))
                        ((IMarkable)f).StartMarker = NotebookMarkerToDMarker((string)e.Attributes["marker-start"]);
                    if (e.Attributes.ContainsKey("marker-end"))
                        ((IMarkable)f).EndMarker = NotebookMarkerToDMarker((string)e.Attributes["marker-end"]);
                }
                if (f is IAlphaBlendable && e.Attributes.ContainsKey("opacity"))
                    ((IAlphaBlendable)f).Alpha = double.Parse((string)e.Attributes["opacity"]);

                applyLink(f, e);
                applyLock(f, e);
            }

            return f;
        }