public DragAdorner(UIElement adorned)
: base(adorned)
{
var brush = new VisualBrush(adorned) {Stretch = Stretch.None, AlignmentX = AlignmentX.Left};
// HACK: this makes the markers work properly,
// even after adding 4+ markers and then removing to 3-,
// and then shift-dragging (in which case the size of the adorner is correct,
// but the VisualBrush tries to render the now invisible number.
_child = new Rectangle();
_child.BeginInit();
_child.Width = adorned.RenderSize.Width;
_child.Height = adorned.RenderSize.Height;
_child.Fill = brush;
_child.IsHitTestVisible = false;
_child.EndInit();
var animation = new DoubleAnimation(0.6, 0.85, new Duration(TimeSpan.FromMilliseconds(500)))
{AutoReverse = true, RepeatBehavior = RepeatBehavior.Forever};
animation.Freeze();
brush.BeginAnimation(Brush.OpacityProperty, animation);
}
private void InputImage_MouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
var inputPoint = e.GetPosition(InputImage);
var RenderPoint = e.GetPosition(MainCanvas);
points.Add(inputPoint);
renderPoints.Add(RenderPoint);
if (points.Count % 2 == 0 && points.Count > 1)
{
int index = points.Count - 1;
Shapes.Rectangle rectangle = new Shapes.Rectangle();
var x = Math.Min(renderPoints[index].X, renderPoints[index - 1].X);
var y = Math.Min(renderPoints[index].Y, renderPoints[index - 1].Y);
rectangle.BeginInit();
RectangleInit(index, rectangle, x, y);
rectangle.EndInit();
System.Drawing.Rectangle rect = new System.Drawing.Rectangle();
var realPointX = Math.Min(points[index].X, points[index - 1].X);
var realPointY = Math.Min(points[index].Y, points[index - 1].Y);
rect.X = (int)realPointX;
rect.Y = (int)realPointY;
rect.Width = (int)rectangle.Width;
rect.Height = (int)rectangle.Height;
sperartor.AddCropArea(rect, nowBitmap);
}
}