/// <summary>
/// Event raised when the mouse cursor is moved when over a Rectangle.
/// </summary>
private void Rectangle_MouseMove(object sender, MouseEventArgs e)
{
if (mouseHandlingMode != MouseHandlingMode.DraggingRectangles)
{
//
// We are not in rectangle dragging mode, so don't do anything.
//
return;
}
Point curContentPoint = e.GetPosition(content);
Vector rectangleDragVector = curContentPoint - origContentMouseDownPoint;
//
// When in 'dragging rectangles' mode update the position of the rectangle as the user drags it.
//
origContentMouseDownPoint = curContentPoint;
Rectangle rectangle = (Rectangle)sender;
RectangleData myRectangle = (RectangleData)rectangle.DataContext;
myRectangle.X += rectangleDragVector.X;
myRectangle.Y += rectangleDragVector.Y;
ExpandContent();
e.Handled = true;
}
/// <summary>
/// Event raised when a mouse button is clicked down over a Rectangle.
/// </summary>
private void Rectangle_MouseDown(object sender, MouseButtonEventArgs e)
{
content.Focus();
Keyboard.Focus(content);
Rectangle rectangle = (Rectangle)sender;
RectangleData myRectangle = (RectangleData)rectangle.DataContext;
myRectangle.IsSelected = true;
if ((Keyboard.Modifiers & ModifierKeys.Shift) != 0)
{
//
// When the shift key is held down special zooming logic is executed in content_MouseDown,
// so don't handle mouse input here.
//
return;
}
if (mouseHandlingMode != MouseHandlingMode.None)
{
//
// We are in some other mouse handling mode, don't do anything.
return;
}
mouseHandlingMode = MouseHandlingMode.DraggingRectangles;
origContentMouseDownPoint = e.GetPosition(content);
rectangle.CaptureMouse();
e.Handled = true;
}