protected override void OnMouseUp(System.Windows.Forms.MouseEventArgs e)
{
myLastPoint = null;
this.Capture = false;
myDragPoint = null;
base.OnMouseUp(e);
}
protected override void OnMouseLeave(EventArgs e)
{
if (myLastPoint != null)
{
using (ReversibleDrawer drawer = this.CreateReversibleDrawer())
{
drawer.DrawLine(0, myLastPoint.Y, this.ClientSize.Width, myLastPoint.Y);
drawer.DrawLine(myLastPoint.X, 0, myLastPoint.X, this.ClientSize.Height);
myLastPoint = null;
}
}
base.OnMouseLeave(e);
}
protected override void OnMouseDown(System.Windows.Forms.MouseEventArgs e)
{
myLastPoint = null;
if (this.BehaviorStyle == XPictureBoxBehaviorStyle.DragScroll)
{
if (this.ImageBounds.Contains(e.X - this.AutoScrollPosition.X, e.Y - this.AutoScrollPosition.Y))
{
myDragPoint = new myPointClass();
myDragPoint.X = e.X;
myDragPoint.Y = e.Y;
}
}
else if (this.BehaviorStyle == XPictureBoxBehaviorStyle.DragSelect)
{
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
MouseCapturer cap = new MouseCapturer(this);
cap.ReversibleShape = ReversibleShapeStyle.Rectangle;
this.Cursor = Cursors.Cross;
this.Capture = true;
this.Refresh();
if (cap.CaptureMouseMove())
{
mySelectionBounds = GetBounds(cap.StartPosition, cap.EndPosition);
mySelectionBounds.Offset(-this.AutoScrollPosition.X, -this.AutoScrollPosition.Y);
Point p = this.ImageBounds.Location;
mySelectionBounds.Offset(-p.X, -p.Y);
myLastPoint = null;
this.Refresh();
}
this.Cursor = Cursors.Default;
this.Capture = false;
}
}
base.OnMouseDown(e);
}
public MainWindow()
{
DataContext = new myPointClass(100, 200);
InitializeComponent();
}
protected override void OnMouseMove(System.Windows.Forms.MouseEventArgs e)
{
if (this.BehaviorStyle == XPictureBoxBehaviorStyle.DragScroll)
{
if (myDragPoint != null)
{
System.Drawing.Point p = new System.Drawing.Point(
0 - this.AutoScrollPosition.X,
0 - this.AutoScrollPosition.Y);
p.Offset(-e.X + myDragPoint.X, -e.Y + myDragPoint.Y);
myDragPoint.X = e.X;
myDragPoint.Y = e.Y;
this.AutoScrollPosition = p;
}
else
{
if (myImage != null)
{
int x = e.X - this.AutoScrollPosition.X;
int y = e.Y - this.AutoScrollPosition.Y;
if (myImage.Size.Width > this.ClientSize.Width || myImage.Size.Height > this.ClientSize.Height)
{
if (this.ImageBounds.Contains(x, y))
{
this.Cursor = System.Windows.Forms.Cursors.SizeAll;
}
else
{
this.Cursor = System.Windows.Forms.Cursors.Default;
}
}
else
{
this.Cursor = System.Windows.Forms.Cursors.Default;
}
}
}
}
else if (this.BehaviorStyle == XPictureBoxBehaviorStyle.DragSelect)
{
using (ReversibleDrawer drawer = this.CreateReversibleDrawer())
{
if (myLastPoint != null)
{
drawer.DrawLine(0, myLastPoint.Y, this.ClientSize.Width, myLastPoint.Y);
drawer.DrawLine(myLastPoint.X, 0, myLastPoint.X, this.ClientSize.Height);
}
else
{
myLastPoint = new myPointClass();
}
if (this.ImageBounds.Contains(e.X, e.Y))
{
myLastPoint.X = e.X;
myLastPoint.Y = e.Y;
drawer.DrawLine(0, myLastPoint.Y, this.ClientSize.Width, myLastPoint.Y);
drawer.DrawLine(myLastPoint.X, 0, myLastPoint.X, this.ClientSize.Height);
}
else
{
myLastPoint = null;
}
}
}
base.OnMouseMove(e);
}
