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);
}
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;
}