public void ZoomByUnit(ZoomUnit zoomUnit)
{
double delta = 0;
switch (zoomUnit)
{
case ZoomUnit.LargeDecrement: delta = -0.25; break;
case ZoomUnit.SmallDecrement: delta = -0.1; break;
case ZoomUnit.LargeIncrement: delta = 0.25; break;
case ZoomUnit.SmallIncrement: delta = 0.1; break;
case ZoomUnit.NoAmount: delta = 0; break;
}
double proposed = this.zoomLevel + delta;
if (proposed < 0.25 || proposed > 4.0)
{
throw new InvalidOperationException();
}
this.zoomLevel = proposed;
}
public void ZoomByUnit(ZoomUnit zoomUnit)
{
double delta = 0;
switch (zoomUnit)
{
case ZoomUnit.LargeDecrement: delta = -0.25; break;
case ZoomUnit.SmallDecrement: delta = -0.1; break;
case ZoomUnit.LargeIncrement: delta = 0.25; break;
case ZoomUnit.SmallIncrement: delta = 0.1; break;
case ZoomUnit.NoAmount: delta = 0; break;
}
double proposed = this.zoomLevel + delta;
if (proposed < 0.25 || proposed > 4.0)
{
throw new InvalidOperationException();
}
this.zoomLevel = proposed;
}