private void UserControl_MouseDown(object sender, MouseButtonEventArgs e)
{
CaptureMouse();
var mousePixel = GetPixelPosition(e);
plottableBeingDragged = plt.GetDraggableUnderMouse(mousePixel.X, mousePixel.Y);
if (plottableBeingDragged is null)
{
// MouseDown event is to start a pan or zoom
bool shiftIsPressed = Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift);
if (e.ChangedButton == MouseButton.Left && shiftIsPressed)
{
mouseMiddleDownLocation = GetPixelPosition(e);
}
else if (e.ChangedButton == MouseButton.Left && enablePanning)
{
mouseLeftDownLocation = GetPixelPosition(e);
}
else if (e.ChangedButton == MouseButton.Right && enableZooming)
{
mouseRightDownLocation = GetPixelPosition(e);
}
else if (e.ChangedButton == MouseButton.Middle)
{
mouseMiddleDownLocation = GetPixelPosition(e);
}
axisLimitsOnMouseDown = plt.Axis();
}
else
{
// mouse is being used to drag a plottable
}
}
private void PbPlot_MouseDown(object sender, MouseEventArgs e)
{
var mousePixel = e.Location;
plottableBeingDragged = plt.GetDraggableUnderMouse(mousePixel.X, mousePixel.Y);
if (plottableBeingDragged is null)
{
// MouseDown event is to start a pan or zoom
if (e.Button == MouseButtons.Left && ModifierKeys.HasFlag(Keys.Shift))
{
mouseMiddleDownLocation = e.Location;
}
else if (e.Button == MouseButtons.Left && enablePanning)
{
mouseLeftDownLocation = e.Location;
}
else if (e.Button == MouseButtons.Right && enableZooming)
{
mouseRightDownLocation = e.Location;
}
else if (e.Button == MouseButtons.Middle)
{
mouseMiddleDownLocation = e.Location;
}
axisLimitsOnMouseDown = plt.Axis();
}
else
{
// mouse is being used to drag a plottable
OnMouseDownOnPlottable(EventArgs.Empty);
}
}
