private void UpdateAnchor()
{
if (base.UI != null)
{
base.UI.AnchorRadius = ((double)base.ToolSettings.Pen.Width.Value) / 2.0;
switch (this.GetStaticData().anchorOffsetMode)
{
case AnchorOffsetMode.NotSet:
this.GetStaticData().anchorCenter = new PointDouble(-131072.0, -131072.0);
break;
case AnchorOffsetMode.Absolute:
this.GetStaticData().anchorCenter = (PointDouble)this.GetStaticData().anchorOffset;
break;
case AnchorOffsetMode.Relative:
{
PointDouble?nullable = base.PresentationSource.PrimaryMouseDevice.TryGetPosition(base.UI);
PointDouble mouseTopLeftPt = nullable.HasValue ? nullable.GetValueOrDefault() : PointDouble.Zero;
PointDouble mouseCenterPt = BrushToolBase <CloneStampTool, CloneStampToolChanges, CloneStampToolUI> .GetMouseCenterPt(mouseTopLeftPt, base.CanvasView.CanvasHairWidth);
this.GetStaticData().anchorCenter = mouseCenterPt + this.GetStaticData().anchorOffset;
break;
}
default:
throw new InternalErrorException(ExceptionUtil.InvalidEnumArgumentException <AnchorOffsetMode>(this.GetStaticData().anchorOffsetMode, "this.anchorOffsetMode"));
}
base.UI.AnchorCenter = this.GetStaticData().anchorCenter;
base.UI.IsAnchorVisible = this.GetStaticData().anchorOffsetMode > AnchorOffsetMode.NotSet;
}
}
protected override void OnUIDragBegin(object sender, PaintDotNet.UI.Input.MouseEventArgs e)
{
if (e.Source is UIElement)
{
bool flag = (base.PresentationSource.PrimaryKeyboardDevice.Modifiers & ModifierKeys.Control) == ModifierKeys.Control;
PointDouble mouseCenterPt = BrushToolBase <CloneStampTool, CloneStampToolChanges, CloneStampToolUI> .GetMouseCenterPt(e.GetPosition(base.UI), base.CanvasView.CanvasHairWidth);
if (flag)
{
this.isHandlingDrag = true;
this.GetStaticData().anchorOffsetMode = AnchorOffsetMode.Absolute;
this.GetStaticData().anchorOffset = (VectorDouble)mouseCenterPt;
this.GetStaticData().anchorLayerWeak = new WeakReferenceT <Layer>(base.ActiveLayer);
this.UpdateAnchor();
e.Handled = true;
}
else if (this.GetStaticData().anchorOffsetMode == AnchorOffsetMode.NotSet)
{
this.isHandlingDrag = true;
e.Handled = true;
}
else if (this.GetStaticData().anchorOffsetMode == AnchorOffsetMode.Absolute)
{
PointDouble anchorCenter = this.GetStaticData().anchorCenter;
this.GetStaticData().anchorOffsetMode = AnchorOffsetMode.Relative;
VectorDouble num4 = (VectorDouble)(((PointDouble)this.GetStaticData().anchorOffset) - mouseCenterPt);
this.GetStaticData().anchorOffset = num4;
this.UpdateAnchor();
PointDouble num5 = this.GetStaticData().anchorCenter;
}
}
base.OnUIDragBegin(sender, e);
}
protected override void OnUIDragMove(object sender, PaintDotNet.UI.Input.MouseEventArgs e)
{
if (this.isHandlingDrag && (e.Source is UIElement))
{
PointDouble mouseCenterPt = BrushToolBase <CloneStampTool, CloneStampToolChanges, CloneStampToolUI> .GetMouseCenterPt(e.GetPosition(base.UI), base.CanvasView.CanvasHairWidth);
if (this.GetStaticData().anchorOffsetMode == AnchorOffsetMode.Absolute)
{
this.GetStaticData().anchorOffset = (VectorDouble)mouseCenterPt;
this.UpdateAnchor();
}
e.Handled = true;
}
this.UpdateAnchor();
base.OnUIDragMove(sender, e);
}
protected override void OnUIDragEnd(object sender, PaintDotNet.UI.Input.MouseEventArgs e)
{
if (this.isHandlingDrag)
{
if (e.Source is UIElement)
{
PointDouble mouseCenterPt = BrushToolBase <CloneStampTool, CloneStampToolChanges, CloneStampToolUI> .GetMouseCenterPt(e.GetPosition(base.UI), base.CanvasView.CanvasHairWidth);
if (this.GetStaticData().anchorOffsetMode == AnchorOffsetMode.Absolute)
{
this.GetStaticData().anchorOffset = (VectorDouble)mouseCenterPt;
this.UpdateAnchor();
}
else if (this.GetStaticData().anchorOffsetMode == AnchorOffsetMode.NotSet)
{
string message = PdnResources.GetString("CloneStampTool.Error.TriedToDrawWithoutAnchor.Text");
MessageBoxUtil.ErrorBox(base.DocumentWorkspace, message);
}
}
e.Handled = true;
this.isHandlingDrag = false;
}
base.OnUIDragEnd(sender, e);
}
