/// <summary>
/// Call <see cref="DoResize"/> with a new bounds determined by the mouse point.
/// </summary>
/// <remarks>
/// This determines a new resize bounds by calling
/// <see cref="ComputeResize"/> with the latest mouse point
/// limited by <see cref="ComputeMinSize"/> and <see cref="ComputeMaxSize"/>.
/// The resulting rectangle is passed to <see cref="DoResize"/>.
/// </remarks>
public override void DoMouseMove()
{
Diagram diagram = this.Diagram;
if (this.Active && diagram != null)
{
Size minSize = ComputeMinSize();
Size maxSize = ComputeMaxSize();
Rect newr = ComputeResize(diagram.LastMousePointInModel, SpotPanel.GetSpot(this.Handle), minSize, maxSize, true);
DoResize(newr);
}
}
/// <summary>
/// Call <see cref="DoResize"/> with a rectangle based on the most recent mouse point,
/// and raise an "object resized" event before stopping the tool.
/// </summary>
public override void DoMouseUp()
{
Diagram diagram = this.Diagram;
if (this.Active && diagram != null)
{
Size minSize = ComputeMinSize();
Size maxSize = ComputeMaxSize();
Rect newr = ComputeResize(diagram.LastMousePointInModel, SpotPanel.GetSpot(this.Handle), minSize, maxSize, true);
DoResize(newr);
diagram.Panel.UpdateDiagramBounds();
// set the EditResult before raising event, in case it changes the result or cancels the tool
this.TransactionResult = ToolCategory;
RaiseEvent(Diagram.NodeResizedEvent, new DiagramEventArgs(this.AdornedNode, this.AdornedElement));
}
StopTool();
}
private void SetResizeCursor(FrameworkElement h, double angle)
{
Spot spot = SpotPanel.GetSpot(h);
if (spot.IsNoSpot)
{
spot = Spot.Center;
}
double a = angle;
if (spot.X <= 0) // left
{
if (spot.Y <= 0) // top-left
{
a += 225;
}
else if (spot.Y >= 1) // bottom-left
{
a += 135;
}
else // middle-left
{
a += 180;
}
}
else if (spot.X >= 1) // right
{
if (spot.Y <= 0) // top-right
{
a += 315;
}
else if (spot.Y >= 1) // bottom-right
{
a += 45;
}
else // middle-right
// a += 0;
{
}
}
else // middle-X
{
if (spot.Y <= 0) // top-middle
{
a += 270;
}
else if (spot.Y >= 1) // bottom-middle
{
a += 90;
}
else
{
// handle is in the middle-middle -- don't do anything
return;
}
}
if (a < 0)
{
a += 360;
}
else if (a >= 360)
{
a -= 360;
}
if (a < 22.5f)
{
h.Cursor = Part.SizeWECursor;
}
else if (a < 67.5f)
{
h.Cursor = Part.SizeNWSECursor;
}
else if (a < 112.5f)
{
h.Cursor = Part.SizeNSCursor;
}
else if (a < 157.5f)
{
h.Cursor = Part.SizeNESWCursor;
}
else if (a < 202.5f)
{
h.Cursor = Part.SizeWECursor;
}
else if (a < 247.5f)
{
h.Cursor = Part.SizeNWSECursor;
}
else if (a < 292.5f)
{
h.Cursor = Part.SizeNSCursor;
}
else if (a < 337.5f)
{
h.Cursor = Part.SizeNESWCursor;
}
else
{
h.Cursor = Part.SizeWECursor;
}
}