public QTreeMap(TreeMapModel model)
{
control = new TreemapControl {
IsZoomable = true
};
Child = control;
control.NodeDoubleClick += (s, e) => {
var qNode = nodeMap[e.Node];
if (!qNode.hasChildren())
{
return;
}
control.Clear();
zoomedNode = qNode;
addToControl(control.Nodes, visibleNodes(), 2);
guiNodes = Objects.list <Node>(control.Nodes);
};
control.MinColorMetric = -5000F;
control.MaxColorMetric = 5000F;
control.MinColor = Color.SpringGreen;
control.MaxColor = Color.Red;
control.PaddingPx = 1;
refreshContextMenus();
control.BeginUpdate();
modelNodes = model.nodes();
addToControl(control.Nodes, modelNodes);
control.EndUpdate();
guiNodes = Objects.list <Node>(control.Nodes);
setRefreshRate(5000);
}
void OnDrawingAreaExposed(object o, ExposeEventArgs args)
{
if (prevSize != Allocation.Size)
{
if (model != null)
treeMapModel = new TreeMapModel(model, Allocation.Width, Allocation.Height);
}
DrawingArea area = (DrawingArea)o;
Cairo.Context g = Gdk.CairoHelper.Create(area.GdkWindow);
if (treeMapModel != null)
{
foreach (var item in treeMapModel.Items)
{
double width = item.Rectangle.Width;
double height = item.Rectangle.Height;
double x1 = item.Rectangle.X;
double x2 = item.Rectangle.X + item.Rectangle.Width;
double y1 = item.Rectangle.Y;
double y2 = item.Rectangle.Y + item.Rectangle.Height;
PointD p1, p2, p3, p4;
p1 = new PointD(x1, y1);
p2 = new PointD(x2, y1);
p3 = new PointD(x2, y2);
p4 = new PointD(x1, y2);
g.MoveTo(p1);
g.LineTo(p2);
g.LineTo(p3);
g.LineTo(p4);
g.LineTo(p1);
g.ClosePath();
g.Save();
//using (Gradient pat = new LinearGradient(x1, y1, x2, y2))
using (Gradient pat = new RadialGradient(x1 + (x2 - x1) / 4.0, y1 + (y2 - y1) / 4.0, 3, x1 + (x2 - x1) / 4.0, y1 + (y2 - y1) / 4.0, Math.Sqrt(width*width + height*height)))
{
pat.AddColorStop(0, new Cairo.Color(1, 1, 1, 1));
pat.AddColorStop(1, new Cairo.Color(0, 0, 1, 1));
g.Pattern = pat;
// Fill the path with pattern
g.FillPreserve();
}
// We "undo" the pattern setting here
g.Restore();
g.Color = new Color(0, 0, 0, 0);
g.Stroke();
}
}
((IDisposable)g.Target).Dispose();
((IDisposable)g).Dispose();
}
public void Init <T>(DataContext sourceData, string[] columnsToSortBy, string defaultColumnForSize, string defaultColumnForColor) where T : class
{
model = new TreeMapModel();
model.LoadData <T>(sourceData, columnsToSortBy, defaultColumnForSize, defaultColumnForColor);
view.ResetZoom();
view.DrawHeirarchy(model.Root);
}
