![]() ![]() The RGB color model works very well for most purposes, but it isn't well-suited to the task of calculating different shades of a color. Actually, the WPF Color object uses an ARGB color model, as it includes an alpha channel to control transparency. WPF works with the namespace, which includes a Color object built around the familiar RGB color model. However, I have included a sample IValueConverter class for each set of conversions. Instead, I focus on the conversion methods themselves. I don't cover the IValueConverter aspect of the process in this article, since there are a number of good articles on how to create an IValueConverter class. Normally, the methods shown in the attached demos would be included in an IValueConverter object that is included in the data binding of the color property. This article explains how to perform the actual color conversion. So, after a bit of research, I determined how to perform the conversion in pure-WPF. To me, mixing GDI and WPF is a code smell, which should be avoided in all but exceptional circumstances. System.Drawing is a GDI namespace, and I have a very strong preference for keeping it out of my WPF applications. ![]() I recently needed to perform this chore, and I was surprised to find very little on how to do the conversion without resorting to using the System.Drawing namespace. For example, we might calculate the border color as 85% of the background color. In cases where the color value is bound to another property, one would typically calculate the darker shade as a mathematical percentage of the base color. For example, we may want a button border to be a darker shade of the button background. WPF sometimes requires us to convert one shade of a color to another. Download RGB-HSB conversion demo - 20.1 KB.Download RGB-HLS conversion demo - 23.3 KB.Public void SetNewPallette(Pallette thePallette)ĬolorConverter cv = new ColorConverter() Īpp.Current.Resources = new SolidColorBrush((Color)cv.ConvertFrom(thePallette.LightFill)) Īpp.Current.Resources = new SolidColorBrush((Color)cv.ConvertFrom(thePallette.DarkText)) Īpp.Current.Resources = new SolidColorBrush((Color)cv.ConvertFrom(thePallette.DarkFill)) Īpp.Current.Resources = new SolidColorBrush((Color)cv. TransformGroup transformGroup = new TransformGroup() This.rotation = new RotateTransform(this.magnifyingGlassAngle,, ) Rotate the glass before translating it as that ordering means translation calculations don't have to account for rotation. HorizontalCrosshair.Stroke = Brushes.Black HorizontalCrosshair.StrokeThickness = 0.25 VerticalCrosshair.Stroke = Brushes.Black VerticalCrosshair.StrokeThickness = 0.25 (new GradientStop((Color)cc.ConvertFrom("#AAA"), 0)) OutlineBrush.StartPoint = new Point(0, 0) LinearGradientBrush outlineBrush = new LinearGradientBrush() LensFill.Viewport = new Rect(0, 0, 1, 1) LensFill.ViewportUnits = BrushMappingMode.RelativeToBoundingBox LensFill.Viewbox = new Rect(0, 0, 50, 50) LensFill.ViewboxUnits = BrushMappingMode.Absolute ![]() VisualBrush lensFill = new VisualBrush() Create the lens of the magnifying glass (new GradientStop(Colors.LightGreen, 0.9)) HandleBrush.EndPoint = new Point(1, 0.78786) HandleBrush.StartPoint = new Point(0.78786, 1) LinearGradientBrush handleBrush = new LinearGradientBrush() Create the handle of the magnifying glass This.VerticalAlignment = VerticalAlignment.Top This.HorizontalAlignment = HorizontalAlignment.Left Public MagnifyingGlass(MarkableCanvas markableCanvas) ModelVisual3D visual = new ModelVisual3D() Spotlight.Direction = new Vector3D(pos.X * -1, pos.Y * -1, pos.Z * -1) Var color = (Color)conv.ConvertFrom("#ffffff") camera.LookDirection = new Vector3D(0, -.05, -4) ĬolorConverter conv = new ColorConverter() camera.Position = new Point3D(0, 0, 85) camera.LookDirection = new Vector3D(0, -.05, -1) Ĭamera.UpDirection = new Vector3D(0, 1, 0) public Light Lighting Ĭamera.Position = new Point3D(0. LogHelper.Log(Logger, ex, LogLevel.Error) Ĭatch (SettingsPropertyWrongTypeException ex) Public void SetValue(string key, string value, IFormatProvider format = null)ĭefault = Double.Parse(value, NumberStyles.Any, format) ĭefault = font ? new Font(new FontFamily("Microsoft Sans Serif"), 12) ĭefault = Int32.Parse(value, NumberStyles.Any, format) Ĭatch (SettingsPropertyNotFoundException ex) = Convert.ToInt32(dev.Element("OutCurrent").Value) - Convert.ToInt32(dev.Element("InCurrent").Value) = dev.Element("Tags").Attribute("tag5").Value = dev.Element("Tags").Attribute("tag4").Value = dev.Element("Tags").Attribute("tag3").Value = dev.Element("Tags").Attribute("tag2").Value = dev.Element("Tags").Attribute("tag1").Value ColorConverter cc = new ColorConverter() Ĭolor c = (Color)cc.ConvertFrom(("color").Value) ![]()
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