private void PerformRotation(Window wnd, ManipulationDeltaRoutedEventArgs e, CompositeTransform transform)
{
if (wnd.IsFullscreen)
{
return;
}
transform.Rotation += e.Delta.Rotation;
}
private double GetDeltaX(Window wnd, Point currentPosition, Point deltaPosition)
{
if (currentPosition.X + deltaPosition.X < 0)
{
return(-currentPosition.X);
}
else if (currentPosition.X + wnd.ActualWidth + deltaPosition.X > _workspace.ActualWidth)
{
return(-(currentPosition.X + wnd.ActualWidth - _workspace.ActualWidth));
}
else
{
return(deltaPosition.X);
}
}
private double GetDeltaY(Window wnd, Point currentPosition, Point deltaPosition)
{
if (currentPosition.Y + deltaPosition.Y < 0)
{
return(-currentPosition.Y);
}
else if (currentPosition.Y + wnd.ActualHeight + deltaPosition.Y > _workspace.ActualHeight)
{
return(-(currentPosition.Y + wnd.ActualHeight - _workspace.ActualHeight));
}
else
{
return(deltaPosition.Y);
}
}
private void PerformTransation(Window wnd, ManipulationDeltaRoutedEventArgs e, CompositeTransform transform)
{
if (wnd.IsFullscreen)
{
return;
}
var currentPosition = new Point(transform.TranslateX, transform.TranslateY);
var deltaPosition = new Point(e.Delta.Translation.X, e.Delta.Translation.Y);
deltaPosition.X = GetDeltaX(wnd, currentPosition, deltaPosition);
deltaPosition.Y = GetDeltaY(wnd, currentPosition, deltaPosition);
transform.TranslateX += deltaPosition.X;
transform.TranslateY += deltaPosition.Y;
}
private void PerformScale(Window wnd, ManipulationDeltaRoutedEventArgs e, CompositeTransform transform, CompositeTransform compositeTransform)
{
if (wnd.IsFullscreen)
{
return;
}
if (e.Delta.Scale == 1)
{
return;
}
var minScale = _rootConfigVm.SelectedSession.Root.WindowSettings.MinWindowScale;
var maxScale = _rootConfigVm.SelectedSession.Root.WindowSettings.MaxWindowScale;
transform.ScaleX *= e.Delta.Scale;
transform.ScaleY *= e.Delta.Scale;
transform.TranslateX = (e.Delta.Scale * (transform.TranslateX - _relativePosX)) + _relativePosX;
transform.TranslateY = (e.Delta.Scale * (transform.TranslateY - _relativePosY)) + _relativePosY;
var scaledWidth = transform.ScaleX * wnd.ActualWidth;
var scaledHeight = transform.ScaleY * wnd.ActualHeight;
if (transform.ScaleX < minScale)
{
transform.ScaleX = minScale;
}
if (transform.ScaleY < minScale)
{
transform.ScaleY = minScale;
}
if (maxScale != double.MaxValue)
{
if (transform.ScaleX > maxScale)
{
transform.ScaleX = maxScale;
}
if (transform.ScaleY > maxScale)
{
transform.ScaleY = maxScale;
}
}
else
{
if (transform.TranslateY + scaledHeight >= _workspace.ActualHeight)
{
transform.TranslateY = _workspace.ActualHeight - scaledHeight;
if (transform.TranslateY < 0)
{
var maxContainerScale = _workspace.ActualHeight / wnd.ActualHeight;
transform.ScaleX = maxContainerScale;
transform.ScaleY = maxContainerScale;
}
}
if (transform.TranslateX + scaledWidth >= _workspace.ActualWidth)
{
transform.TranslateX = _workspace.ActualWidth - scaledWidth;
if (transform.TranslateX < 0)
{
var maxContainerScale = _workspace.ActualWidth / wnd.ActualWidth;
transform.ScaleX = maxContainerScale;
transform.ScaleY = maxContainerScale;
}
}
}
compositeTransform.ScaleX = 1.0d / transform.ScaleX;
compositeTransform.ScaleY = 1.0d / transform.ScaleY;
}