[TestCase(480, 320, 96, SetDisplayAction.DisplayType.Desktop, 0.64f)] //Scale on desktop
public void UIHelper_TestScaleFactor(int width, int height, float dpi, SetDisplayAction.DisplayType displayType, float expectedScaleFactor)
{
//when
var scaleFactor = UIUtils.GetScaleFactor(width, height, dpi, displayType);
//Then
Assert.IsTrue(Math.Abs(expectedScaleFactor - scaleFactor) < 0.1f, $"Expected Scale Factor was {expectedScaleFactor.ToString()}, but {scaleFactor.ToString()} was found", null);
}
static float FindMinimumDeviceHeight(SetDisplayAction.DisplayType displayType)
{
if (displayType == SetDisplayAction.DisplayType.Tablet)
{
return(k_MinimumHeightTablet);
}
return(k_MinimumHeightPhone);
}
public static float GetScaleFactor(float width, float height, float dpi, SetDisplayAction.DisplayType displayType)
{
var scaleFactor = dpi / GetTargetDpi(dpi, displayType);
Vector2 screenSize = new Vector2(width / scaleFactor, height / scaleFactor);
var minimalHeight = FindMinimumDeviceHeight(displayType);
if (screenSize.y < minimalHeight)
{
scaleFactor = height / minimalHeight;
}
return(scaleFactor);
}
public static float GetTargetDpi(float dpi, SetDisplayAction.DisplayType displayType)
{
return(displayType == SetDisplayAction.DisplayType.Desktop? dpi : k_TargetDPIWindows);
}
