// OnMouseUp is new position of slider.
protected override void OnMouseUp(MouseEventArgs args)
{
if (rsDragging != null)
{
// Calculate new Value properties and trigger the event.
if (rsDragging == rsLeftIndent || rsDragging == rsFirstIndent)
{
rsLeftIndent.Value = PixelsToInches(rsLeftIndent.X - LeftMargin);
rsFirstIndent.Value =
PixelsToInches(rsFirstIndent.X - rsLeftIndent.X);
OnChange(new RulerEventArgs(rsDragging.RulerProperty));
}
else if (rsDragging == rsRightIndent || rsDragging == rsTextWidth)
{
rsTextWidth.Value = PixelsToInches(rsTextWidth.X - LeftMargin);
rsRightIndent.Value =
PixelsToInches(rsTextWidth.X - rsRightIndent.X);
OnChange(new RulerEventArgs(rsTextWidth.RulerProperty));
OnChange(new RulerEventArgs(rsRightIndent.RulerProperty));
}
else if (rsDragging is Tab)
{
rsDragging.Value = PixelsToInches(rsDragging.X - LeftMargin);
OnChange(new RulerEventArgs(rsDragging.RulerProperty));
}
// Cease drag operation.
rsDragging = null;
DrawReversibleLine(xLineOverTextBox);
}
}
void CalculateDisplayOffsets2(RulerSlider rs, int xNew)
{
if (rs.X != xNew)
{
Invalidate(rs.Rectangle);
rs.X = xNew;
Invalidate(rs.Rectangle);
}
}
// OnMouseDown for moving sliders and creating tabs.
protected override void OnMouseDown(MouseEventArgs args)
{
// Ignore if it's not the left button.
if ((args.Button & MouseButtons.Left) == 0)
{
return;
}
// Loop through existing sliders looking for positive hit test.
foreach (RulerSlider rs in rsCollection)
{
if (rs.HitTest(args.Location))
{
rsDragging = rs;
ptDown = args.Location;
xOriginal = rsDragging.X;
if (rsDragging is TextWidth)
{
Cursor.Current = Cursors.SizeWE;
}
DrawReversibleLine(xLineOverTextBox = args.X);
return;
}
}
// If no hit, create a new tab.
rsDragging = new Tab();
rsCollection.Add(rsDragging);
ptDown = args.Location;
xOriginal = rsDragging.X = ptDown.X;
Invalidate(rsDragging.Rectangle);
DrawReversibleLine(xLineOverTextBox = args.X);
return;
}