// todo !!!dispose missing & -= missing!!!
public CroppingAdorner(Canvas adornedElement)
: base(adornedElement)
{
_visualCollection = new VisualCollection(this);
_originalCanvas = adornedElement;
_canvasOverlay = new Canvas();
_rectangleManager = new RectangleManager(_canvasOverlay);
_overlayManager = new OverlayManager(_canvasOverlay,
_rectangleManager);
_thumbManager = new ThumbManager(_canvasOverlay,
_rectangleManager);
_displayTextManager = new DisplayTextManager(_canvasOverlay,
_rectangleManager);
_visualCollection.Add(_canvasOverlay);
MouseLeftButtonDown += MouseLeftButtonDownEventHandler;
MouseMove += MouseMoveEventHandler;
MouseLeftButtonUp += MouseLeftButtonUpEventHandler;
//add overlay
Loaded += (sender,
args) =>
{
_overlayManager.UpdateOverlay();
};
//if rectangle finalSize changed, re-draw overlay
_rectangleManager.RectangleSizeChanged += (sender,
args) =>
{
_overlayManager
.UpdateOverlay();
_displayTextManager
.UpdateSizeText();
};
_rectangleManager.RectangleMoved += (sender,
args) =>
{
_overlayManager
.UpdateOverlay();
_displayTextManager
.UpdateSizeText();
};
_rectangleManager.OnRectangleDoubleClickEvent += (sender,
args) =>
{
OnRectangleDoubleClickEvent
?.Invoke(sender,
new
DoubleClickEventArgs
{
BitmapFrame
= GetCroppedBitmapFrame()
});
};
}
private void MouseMoveEventHandler(object sender, MouseEventArgs e)
{
if (_isMouseLeftButtonDown)
{
_rectangleManager.MouseMoveEventHandler(e);
_overlayManager.UpdateOverlay();
_thumbManager.ShowThumbs(true);
_displayTextManager.ShowText(true);
_displayTextManager.UpdateSizeText();
_thumbManager.UpdateThumbsPosition();
}
}
private void MouseMoveEventHandler(object sender, MouseEventArgs e)
{
if (_isMouseLeftButtonDown)
{
_rectangleManager.MouseMoveEventHandler(e);
_overlayManager.UpdateOverlay();
_thumbManager.ShowThumbs(true);
_displayTextManager.ShowText(true);
_displayTextManager.UpdateSizeText();
_thumbManager.UpdateThumbsPosition();
OnRectangleLocationChangedEvent?.Invoke(_rectangleManager, new LocationChangedEventArgs()
{
NewLocation = e.GetPosition(_originalCanvas)
});
}
}
