private async void RunTriangleUpdaterAsync()
{
do
{
await _triangleUpdateRequired.WaitAsync();
if (_isLoaded)
{
var wb = new WriteableBitmap(
(int)trianglePicker.ActualWidth,
(int)trianglePicker.ActualHeight);
var wbHue = new WriteableBitmap(
(int)slidersPanel.ActualWidth - 80,
1);
var wbSaturation = new WriteableBitmap(
(int)slidersPanel.ActualWidth - 80,
1);
var wbLightness = new WriteableBitmap(
(int)slidersPanel.ActualWidth - 80,
1);
var wbRed = new WriteableBitmap(
(int)slidersPanel.ActualWidth - 80,
1);
var wbGreen = new WriteableBitmap(
(int)slidersPanel.ActualWidth - 80,
1);
var wbBlue = new WriteableBitmap(
(int)slidersPanel.ActualWidth - 80,
1);
var color = ColorExtensions.FromHsl(hueRing.Value, 1, 0.5);
await Task.WhenAll(
wb.RenderColorPickerSaturationValueTriangleAsync(hueRing.Value),
wbHue.RenderColorPickerHSLHueBarAsync(1.0, 0.5),
wbSaturation.RenderColorPickerHSLSaturationBarAsync(hueRing.Value, 0.5),
wbLightness.RenderColorPickerHSLLightnessBarAsync(hueRing.Value, 0.5),
wbRed.RenderColorPickerRGBRedBarAsync(color.G / 255.0, color.B / 255.0),
wbGreen.RenderColorPickerRGBGreenBarAsync(color.R / 255.0, color.B / 255.0),
wbBlue.RenderColorPickerRGBBlueBarAsync(color.R / 255.0, color.G / 255.0));
if (_isLoaded)
{
triangleBrush.ImageSource = wb;
hueBackground.ImageSource = wbHue;
saturationBackground.ImageSource = wbSaturation;
lightnessBackground.ImageSource = wbLightness;
redBackground.ImageSource = wbRed;
greenBackground.ImageSource = wbGreen;
blueBackground.ImageSource = wbBlue;
}
}
} while (_isLoaded);
}
private void OnHueRingImage2SizeChanged(object sender, SizeChangedEventArgs e)
{
if (hueRingImage2.ActualHeight == 0 ||
hueRingImage2.ActualWidth == 0)
{
return;
}
var minSize = Math.Min(hueRingImage2.ActualHeight, hueRingImage2.ActualWidth);
var outerRingRadius = minSize / 2;
var innerRingRadius = outerRingRadius * 2 / 3;
var triangleWidth = innerRingRadius * Math.Sqrt(3);
var triangleHeight = innerRingRadius * 3 / 2;
var wb = new WriteableBitmap((int)triangleWidth, (int)triangleHeight);
#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
wb.RenderColorPickerSaturationValueTriangleAsync();
#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
saturationValueTriangleImage.Source = wb;
saturationValueTriangleImage.Margin = new Thickness(0, outerRingRadius - innerRingRadius, 0, outerRingRadius - innerRingRadius * 0.5);
}
private void OnHueRingImage2SizeChanged(object sender, SizeChangedEventArgs e)
{
if (hueRingImage2.ActualHeight == 0 ||
hueRingImage2.ActualWidth == 0)
{
return;
}
var minSize = Math.Min(hueRingImage2.ActualHeight, hueRingImage2.ActualWidth);
var outerRingRadius = minSize / 2;
var innerRingRadius = outerRingRadius * 2 / 3;
var triangleWidth = innerRingRadius * Math.Sqrt(3);
var triangleHeight = innerRingRadius * 3 / 2;
var wb = new WriteableBitmap((int)triangleWidth, (int)triangleHeight);
wb.RenderColorPickerSaturationValueTriangleAsync();
saturationValueTriangleImage.Source = wb;
saturationValueTriangleImage.Margin = new Thickness(0, outerRingRadius - innerRingRadius, 0, outerRingRadius - innerRingRadius * 0.5);
}