/// <summary>
/// Handles the GlyphDrawing event of the renderer control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="args">The <see cref="Syncfusion.Windows.Controls.Grid.GridTreeGlyphDrawingEventArgs"/> instance containing the event data.</param>
void renderer_GlyphDrawing(object sender, GridTreeGlyphDrawingEventArgs args)
{
GridTreeExpanderCellRendererExt renderer = sender as GridTreeExpanderCellRendererExt;
if (renderer != null)
{
//code that draws a circle....
PathGeometry pg = args.Geometry;
Point pt0 = args.StartPoint;
if (args.IsHot)
{
pt0.Offset(1, 5);
}
else
{
pt0.Offset(0, 4);
}
PathFigure pf = new PathFigure();
pf.StartPoint = pt0;
pf.IsClosed = false;
pf.IsFilled = !args.Opened;
double r = args.IsHot ? 4 : 5; //raduis
pt0.Offset(0, .001); //make it essentially a full circle
ArcSegment seg = new ArcSegment(pt0, new Size(r, r), 0, true, SweepDirection.Clockwise, true);
pf.Segments.Add(seg);
pg.Figures.Add(pf);
}
}
/// <summary>
/// Invokes the specified parameter.
/// </summary>
/// <param name="parameter">The parameter.</param>
protected override void Invoke(object parameter)
{
bool customDrawingEventHooked = false;
var treeGrid = this.TargetObject as GridTreeControl;
if (treeGrid.InternalGrid != null)
{
if ((parameter as SelectionChangedEventArgs).AddedItems[0] != null)
{
GridTreeExpandGlyph Item = (GridTreeExpandGlyph)((parameter as SelectionChangedEventArgs).AddedItems[0]);
treeGrid.InternalGrid.ExpandGlyphType = Item;
}
if (treeGrid.InternalGrid.ExpandGlyphType == GridTreeExpandGlyph.Custom)
{
//need to subscribe to an event and provide the Glyph, bout on subscribe the first time...
if (!customDrawingEventHooked)
{
GridTreeExpanderCellRendererExt renderer = treeGrid.InternalGrid.CellRenderers["ExpanderCell"] as GridTreeExpanderCellRendererExt;
if (renderer != null)
{
renderer.GlyphDrawing += new GridTreeGlyphDrawingHandler(renderer_GlyphDrawing);
customDrawingEventHooked = true;
}
}
}
SetColorsBasedOnComboBox();
}
}
