private void UpdateSelectionRegion(MouseEventArgs e, UpdateMaskType updateType)
{
if (updateType == UpdateMaskType.ForMouseMoving && e.LeftButton != MouseButtonState.Pressed)
{
selectionStartPoint = null;
}
if (selectionStartPoint.HasValue)
{
selectionEndPoint = e.GetPosition(this);
var startPoint = (System.Windows.Point)selectionEndPoint;
var endPoint = (System.Windows.Point)selectionStartPoint;
var sX = startPoint.X;
var sY = startPoint.Y;
var eX = endPoint.X;
var eY = endPoint.Y;
var deltaX = eX - sX;
var deltaY = eY - sY;
if (Math.Abs(deltaX) >= SystemParameters.MinimumHorizontalDragDistance ||
Math.Abs(deltaX) >= SystemParameters.MinimumVerticalDragDistance)
{
isMaskDraging = true;
double x = sX < eX ? sX : eX; //Math.Min(sX, eX);
double y = sY < eY ? sY : eY; //Math.Min(sY, eY);
double w = deltaX < 0 ? -deltaX : deltaX; //Math.Abs(deltaX);
double h = deltaY < 0 ? -deltaY : deltaY; //Math.Abs(deltaY);
selectionRegion = new Rect(x, y, w, h);
}
else
{
if (DefaultSize.HasValue && updateType == UpdateMaskType.ForMouseLeftButtonUp)
{
isMaskDraging = true;
selectionRegion = new Rect(startPoint.X, startPoint.Y, DefaultSize.Value.Width, DefaultSize.Value.Height);
}
else
{
isMaskDraging = false;
}
}
}
UpdateIndicator(selectionRegion);
}
private void UpdateSelectionRegion(MouseEventArgs e, UpdateMaskType updateType)
{
if (updateType == UpdateMaskType.ForMouseMoving && e.LeftButton != MouseButtonState.Pressed)
{
selectionStartPoint = null;
}
if (selectionStartPoint.HasValue )
{
selectionEndPoint = e.GetPosition(this);
var startPoint = (Point) selectionEndPoint;
var endPoint = (Point) selectionStartPoint;
var sX = startPoint.X;
var sY = startPoint.Y;
var eX = endPoint.X;
var eY = endPoint.Y;
var deltaX = eX - sX;
var deltaY = eY - sY;
if (Math.Abs(deltaX) >= SystemParameters.MinimumHorizontalDragDistance ||
Math.Abs(deltaX) >= SystemParameters.MinimumVerticalDragDistance)
{
isMaskDraging = true;
double x = sX < eX ? sX : eX;//Math.Min(sX, eX);
double y = sY < eY ? sY : eY;//Math.Min(sY, eY);
double w = deltaX < 0 ? -deltaX : deltaX;//Math.Abs(deltaX);
double h = deltaY < 0 ? -deltaY : deltaY;//Math.Abs(deltaY);
selectionRegion = new Rect(x, y, w, h);
}
else
{
if (DefaultSize.HasValue && updateType == UpdateMaskType.ForMouseLeftButtonUp)
{
isMaskDraging = true;
selectionRegion = new Rect(startPoint.X, startPoint.Y, DefaultSize.Value.Width, DefaultSize.Value.Height);
}
else
{
isMaskDraging = false;
}
}
}
}
