public void GeneralMouseMove <T>(MouseEventObjectType type, object sender, MouseEventArgs e)
{
if (mouseHandlingMode == ZoomAndPan.MouseHandlingMode.DraggingObjects)
{
if (mouseButtonDown == MouseButton.Left)
{
UIElement parentCanvas = ParentalFinder.FindParent <Canvas>(myCoUserControl);
Point curContentPoint = e.GetPosition(parentCanvas);
Vector rectangleDragVector = curContentPoint - origContentMouseDownPoint;
origContentMouseDownPoint = curContentPoint;
bool shift = ((Keyboard.Modifiers & ModifierKeys.Shift) != 0);
bool ctrl = ((Keyboard.Modifiers & ModifierKeys.Control) != 0);
bool alt = ((Keyboard.Modifiers & ModifierKeys.Alt) != 0);
if (sender is FrameworkElement)
{
FrameworkElement fwe = (FrameworkElement)sender;
if (fwe.DataContext is IMainVmInterface)
{
IMainVmInterface mvm = (IMainVmInterface)fwe.DataContext;
T obj = (T)fwe.DataContext;
mvm.MainVm.MouseMove(type, obj, rectangleDragVector, shift, ctrl, alt);
}
}
e.Handled = true;
}
}
}
public void GeneralMouse <T>(bool down, MouseEventObjectType type, object sender, MouseButtonEventArgs e)
{
// We want access to the parent Canvas above the "content" Canvas.
// The "content" (content it is it's name) Canvas, is the top Canvas of the
// CompoundObjectUserControl, so the parent canvas is the one above
// it. We need it to set the focus (why?) and to get the mouse point
// expressed in the parent coordinate system.
// Hence, we are not seeking the top most canvas, i.e. the CenteredCanvas
// specialised Canvas of the main window.
// By getting access to the "content" Canvas which is the top most canvas
// of this object, we search immediatly above it to make sure that the found
// canvas is the one above it.
// Now, can this be done without knowledge of the content Canvas?
// Can it, for instance, be assumed that the content Canvas is the first
// Parent Canvas and the sought Canvas is the second found?
//
UIElement parentCanvas = ParentalFinder.FindParent <Canvas>(myCoUserControl);
parentCanvas.Focus();
Keyboard.Focus(parentCanvas);
mouseButtonDown = e.ChangedButton;
bool shift = ((Keyboard.Modifiers & ModifierKeys.Shift) != 0);
bool ctrl = ((Keyboard.Modifiers & ModifierKeys.Control) != 0);
bool alt = ((Keyboard.Modifiers & ModifierKeys.Alt) != 0);
// If the leftClickState of the Main VM is other than none then
// we do not want to start dragging objects
if (sender is FrameworkElement)
{
FrameworkElement fwe = (FrameworkElement)sender;
if (fwe.DataContext is T)
{
IMainVmInterface obj = (IMainVmInterface)fwe.DataContext;
if (obj.MainVm.LeftClickState == LeftClickState.none)
{
// If ctrl is held down, we never intent to drag things
if (!ctrl && (mouseButtonDown == MouseButton.Left))
{
if (down)
{
mouseHandlingMode = ZoomAndPan.MouseHandlingMode.DraggingObjects;
origContentMouseDownPoint = e.GetPosition(parentCanvas);
UIElement dragObject = (UIElement)sender;
dragObject.CaptureMouse();
e.Handled = true;
}
else
{
if (mouseHandlingMode == ZoomAndPan.MouseHandlingMode.DraggingObjects)
{
mouseButtonDown = e.ChangedButton;
if (mouseButtonDown == MouseButton.Left)
{
mouseHandlingMode = ZoomAndPan.MouseHandlingMode.None;
UIElement rectangle = (UIElement)sender;
rectangle.ReleaseMouseCapture();
e.Handled = true;
}
}
}
}
}
if (down)
{
if (obj.MainVm.MouseDown(type, obj, e.ChangedButton, e.GetPosition(myCoUserControl), e.ClickCount, shift, ctrl, alt))
{
e.Handled = true;
}
}
else
{
if (obj.MainVm.MouseUp(type, obj, e.ChangedButton, e.GetPosition(myCoUserControl), e.ClickCount, shift, ctrl, alt))
{
e.Handled = true;
}
}
}
}
}
