//Метод, который отвечает за поворот холста на 90, 180 градусов
public void RotationTransform(object sender, EventArgs e)
{
bool is90 = (sender as MenuItem).Name == "rotation90";
double rotationAngle = is90 ? 90d : 180d;
double centerX = surface.ActualWidth / 2;
double centerY = surface.ActualHeight / 2;
double scaleVertical = surface.ActualHeight / surface.ActualWidth;
double scaleHorizontal = surface.ActualWidth / surface.ActualHeight;
switch (rotationState)
{
case RotateIteration.None:
transGroup = new TransformGroup();
surface.RenderTransform = transGroup;
if (is90)
{
transGroup.Children.Add(new ScaleTransform(scaleVertical, scaleVertical, centerX, centerY));
rotationState++;
}
else
{
rotationState = RotateIteration.Second;
}
break;
case RotateIteration.First:
if (is90)
{
transGroup.Children.Add(new ScaleTransform(scaleHorizontal, scaleHorizontal, centerX, centerY));
rotationState++;
}
else
{
rotationState = RotateIteration.Third;
}
break;
case RotateIteration.Second:
if (is90)
{
transGroup.Children.Add(new ScaleTransform(scaleVertical, scaleVertical, centerX, centerY));
rotationState++;
}
else
{
rotationState = RotateIteration.None;
surface.RenderTransform = null;
}
break;
case RotateIteration.Third:
if (is90)
{
transGroup.Children.Add(new ScaleTransform(scaleHorizontal, scaleHorizontal, centerX, centerY));
rotationState = RotateIteration.None;
surface.RenderTransform = null;
}
else
{
rotationState = RotateIteration.First;
}
break;
}
transGroup.Children.Add(new RotateTransform(rotationAngle, centerX, centerY));
}
public ImageEditor(InkCanvas surface, ProgressBar progressBar)
{
this.surface = surface;
this.rotationState = RotateIteration.None;
}
