private void canvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (!IsSelectable)
{
return;
}
MainCanvas.CaptureMouse(); //Capture mouse to receive events even if the pointer is outside the control
//Start dragging:
_draggingState.StartDragging(CanvasScoreRenderer.ConvertPoint(e.GetPosition(MainCanvas)));
//Check if element under cursor is staff element:
FrameworkElement element = e.OriginalSource as FrameworkElement;
if (element == null)
{
return;
}
if (!Renderer.OwnershipDictionary.ContainsKey(element))
{
return;
}
//Set selected element:
Select(Renderer.OwnershipDictionary[element]);
}
private void MainCanvas_MouseMove(object sender, MouseEventArgs e)
{
if (!IsSelectable)
{
return;
}
if (!_draggingState.IsDragging || _innerScore == null)
{
return;
}
Point currentPosition = e.GetPosition(MainCanvas);
var strategy = DraggingStrategy.For(SelectedElement);
if (strategy != null)
{
strategy.Drag(Renderer, SelectedElement, _draggingState, CanvasScoreRenderer.ConvertPoint(currentPosition));
}
if (InvalidatingMode == InvalidatingModes.RedrawAllScore)
{
RenderOnCanvas(_innerScore);
}
}
