static Tuple<string, VoidDelegate> ColorChangeMenuTuple(AttributeBase attr) {
return new Tuple<string, VoidDelegate>("set color", () => {
var dialog = new ColorDialog();
if (dialog.ShowDialog() == DialogResult.OK) {
var color = dialog.Color;
attr.Color = new Color(color.A, color.R, color.G, color.B);
}
});
}
void WriteStroke(AttributeBase attr)
{
WriteAttribute("stroke", MsaglColorToSvgColor(attr.Color));
WriteAttribute("stroke-opacity", MsaglColorToSvgOpacity(attr.Color));
WriteAttribute("stroke-width", attr.LineWidth);
}
Tuple<string, VoidDelegate>[] ChangeColorDialog(AttributeBase attr) {
return new[] {ColorChangeMenuTuple(attr)};
}
static Tuple<string, VoidDelegate> ColorChangeMenuTuple(AttributeBase attr) {
return new Tuple<string, VoidDelegate>("set color", () => {
var dialog = new System.Windows.Forms.ColorDialog();
if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK) {
var color = dialog.Color;
attr.Color = new Microsoft.Msagl.Drawing.Color(color.A, color.R, color.G, color.B);
}
});
}
void DrawArrowPolygon(AttributeBase attr, Point[] points)
{
WriteStartElement("polygon");
WriteStroke(attr);
var edgeAttr = attr as EdgeAttr;
if (edgeAttr != null)
{
WriteAttribute("fill", "#000000");
}
else
{
var nodeAttr = attr as NodeAttr;
if (nodeAttr != null)
WriteFill(nodeAttr);
}
WriteAttribute("points", PointsToString(points));
WriteEndElement();
}
private void WriteBaseAttr(AttributeBase baseAttr) {
WriteStartElement(Tokens.BaseAttr);
WriteStyles(baseAttr.Styles);
WriteColorElement(Tokens.Color, baseAttr.Color);
WriteStringElement(Tokens.LineWidth, baseAttr.LineWidth);
WriteStringElement(Tokens.ID, baseAttr.Id == null ? "" : baseAttr.Id);
WriteEndElement();
}
static void AddStyles(AttributeBase a, object o)
{
if (o is Styles)
{
Styles styles = o as Styles;
foreach (var s in styles.styles)
{
a.AddStyle(s);
}
if (styles.lineWidth != 0)
{
a.LineWidth = styles.lineWidth;
}
}
}
private void ReadStyles(AttributeBase baseAttr) {
CheckToken(Tokens.Styles);
XmlRead();
bool haveStyles = false;
while (TokenIs(Tokens.Style)) {
baseAttr.AddStyle((Style)Enum.Parse(typeof(Style), ReadStringElement(Tokens.Style), false));
haveStyles = true;
}
if (haveStyles)
ReadEndElement();
}
private void ReadBaseAttr(AttributeBase baseAttr) {
CheckToken(Tokens.BaseAttr);
XmlRead();
ReadStyles(baseAttr);
baseAttr.Color = ReadColorElement(Tokens.Color);
baseAttr.LineWidth = ReadDoubleElement(Tokens.LineWidth);
baseAttr.Id = ReadStringElement(Tokens.ID);
ReadEndElement();
}
void GViewerObjectUnderMouseCursorChanged(object sender, ObjectUnderMouseCursorChangedEventArgs e)
{
selectedObject = e.OldObject != null ? e.OldObject.DrawingObject : null;
if (selectedObject != null) {
RestoreSelectedObjAttr();
gViewer.Invalidate(e.OldObject);
selectedObject = null;
}
if (gViewer.SelectedObject == null) {
label1.Text = "No object under the mouse";
gViewer.SetToolTip(toolTip1, "");
} else {
selectedObject = gViewer.SelectedObject;
var edge = selectedObject as Edge;
if (edge != null) {
selectedObjectAttr = edge.Attr.Clone();
edge.Attr.Color = Color.Blue;
gViewer.Invalidate(e.NewObject);
// here we can use e.Attr.Id or e.UserData to get back to the user data
gViewer.SetToolTip(toolTip1, String.Format("edge from {0} to {1}", edge.Source, edge.Target));
} else if (selectedObject is Microsoft.Msagl.Drawing.Node) {
selectedObjectAttr = (gViewer.SelectedObject as Microsoft.Msagl.Drawing.Node).Attr.Clone();
(selectedObject as Microsoft.Msagl.Drawing.Node).Attr.Color = Color.Green;
// // here you can use e.Attr.Id to get back to your data
gViewer.SetToolTip(toolTip1,
String.Format("node {0}",
(selectedObject as Microsoft.Msagl.Drawing.Node).Attr.Id));
gViewer.Invalidate(e.NewObject);
}
label1.Text = selectedObject.ToString();
}
}
