void GViewerOnMouseMove(object sender, MouseEventArgs mouseEventArgs)
{
if (labelToChange == null)
{
return;
}
labelToChange.Text = MousePosition.ToString();
if (viewerEntityCorrespondingToLabelToChange == null)
{
foreach (var e in gViewer.Entities)
{
if (e.DrawingObject == labelToChange)
{
viewerEntityCorrespondingToLabelToChange = e;
break;
}
}
}
if (viewerEntityCorrespondingToLabelToChange == null)
{
return;
}
var rect = labelToChange.BoundingBox;
var font = new Font(labelToChange.FontName, (int)labelToChange.FontSize);
double width;
double height;
StringMeasure.MeasureWithFont(labelToChange.Text, font, out width, out height);
if (width <= 0)
{
//this is a temporary fix for win7 where Measure fonts return negative lenght for the string " "
StringMeasure.MeasureWithFont("a", font, out width, out height);
}
labelToChange.Width = width;
labelToChange.Height = height;
rect.Add(labelToChange.BoundingBox);
gViewer.Invalidate(gViewer.MapSourceRectangleToScreenRectangle(rect));
}
void GViewerOnMouseMove(Edge edge, string value)
{
if (edge.Label == null)
{
return;
}
edge.Label.Text = value;
var rect = edge.Label.BoundingBox;
var font = new Font(edge.Label.FontName, (int)edge.Label.FontSize);
StringMeasure.MeasureWithFont(edge.Label.Text, font, out double width, out double height);
if (width <= 0)
{
StringMeasure.MeasureWithFont("a", font, out width, out height);
}
edge.Label.Width = width;
edge.Label.Height = height;
rect.Add(edge.Label.BoundingBox);
gViewer.Invalidate(gViewer.MapSourceRectangleToScreenRectangle(rect));
}
