public void TestCalculateContrastRatio_WhiteBlue()
{
var value = ColorContrastViewModel
.CalculateContrastRatio(Colors.White, Color.FromRgb(0, 0, 255));
Assert.AreEqual(8.6, Math.Round(value, 1));
}
public void TestCalculateContrastRatio_WhiteRed()
{
var value = ColorContrastViewModel
.CalculateContrastRatio(Colors.White, Color.FromRgb(255, 0, 0));
Assert.AreEqual(4.0, Math.Round(value, 1));
}
public void TestCalculateContrastRatio_GreenWhite()
{
var value = ColorContrastViewModel
.CalculateContrastRatio(Color.FromRgb(0, 255, 0), Colors.White);
Assert.AreEqual(1.4, Math.Round(value, 1));
}
public void TestPassLargeText_WhiteRed()
{
ColorContrastViewModel vm = new ColorContrastViewModel();
vm.FirstColor = Colors.White;
vm.SecondColor = Color.FromRgb(255, 0, 0);
Assert.IsTrue(vm.PassLargeText);
}
public void TestPassLargeText_WhiteBlack()
{
ColorContrastViewModel vm = new ColorContrastViewModel();
vm.FirstColor = Colors.White;
vm.SecondColor = Colors.Black;
Assert.IsTrue(vm.PassLargeText);
}
public void TestPassLargeText_WhiteWhite()
{
ColorContrastViewModel vm = new ColorContrastViewModel();
vm.FirstColor = Colors.White;
vm.SecondColor = Colors.White;
Assert.IsFalse(vm.PassLargeText);
}
public ColorContrast()
{
InitializeComponent();
this.ContrastVM = new ColorContrastViewModel();
// When user interacts with color chooser, reset selected element, hide pixel locations, and
// begin recording if eyedropper action is selected
this.firstChooser.ColorChangerInvoked += Chooser_ColorPickerClicked;
this.secondChooser.ColorChangerInvoked += Chooser_ColorPickerClicked;
// initial colors
this.ContrastVM.FirstColor = System.Windows.Media.Colors.Black;
this.ContrastVM.SecondColor = System.Windows.Media.Colors.White;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="vm">VM of which to update with selected colors</param>
/// <param name="first">Should FirstColor in the VM be updated</param>
/// <param name="second">Should SecondColor in the VM be updated</param>
/// <param name="closed">This will be called on eyedropper closing</param>
public GlobalEyedropperWindow(ColorContrastViewModel vm, bool first, bool second, Action <object, EventArgs> closed)
{
InitializeComponent();
onClose = closed;
ccVM = vm;
selectingFirst = first;
selectingSecond = second;
radius = Convert.ToInt32(Height / 2);
InitializeRenderTransform();
CaptureScreenshot();
InitializeUpdateTimer();
UpdatePos();
}
public void TestCalculateContrastRatio_WhiteWhite()
{
Assert.AreEqual(1.0, ColorContrastViewModel
.CalculateContrastRatio(Colors.White, Colors.White));
}
public void TestGetRelativeLuminance_Black()
{
double lumBlack = ColorContrastViewModel.GetRelativeLuminance(Colors.Black);
Assert.AreEqual(0.0, lumBlack);
}
public void TestGetRelativeLuminance_White()
{
double lumWhite = ColorContrastViewModel.GetRelativeLuminance(Colors.White);
Assert.AreEqual(1.0, lumWhite);
}
public ColorContrastPage()
{
InitializeComponent();
BindingContext = _viewModel = new ColorContrastViewModel();
}
