- #Uwp colorconverter windows 10#
- #Uwp colorconverter android#
- #Uwp colorconverter code#
- #Uwp colorconverter series#
This amounts to defining two functions: Convert and ConvertBack. This class will handle binding, so we need to implement the IValueConverter interface.
#Uwp colorconverter series#
Moreover, there’s no built in way to convert percentages to a series of GradientStops, so we’re going to have to write a converter.Ĭreate a new C# class and call it PercentageToFillConverter.
#Uwp colorconverter code#
If we want to use this code to stylize cells’ backgrounds based on their values, we’ll have to do some data binding. While this technique works, we still have numbers hard-coded into the XAML. Just like that, the gradient effect is gone! All we see is a solid blue portion for the first 60%, followed by a solid 40% of red. We want an abrupt shift to red at this point, so let’s a red stop at offset 0.6 as well. We want the blue to extend 60% of the way across the rectangle, so let’s add a blue stop at offset 0.6. If two consecutive stops are the same color, there won’t be any transitional change in color! The LinearGradientBrush creates gradient transitions between each of the individual GradientStops. But what if we made our gradient a little less gradienty? Adding More Stops to the Gradient Let’s make a single rectangle and use the LinearGradientBush property to create a blue-to-red gradient. We want a hard transition from blue to red without the intermediate colors. We transition for purple to red to yellow and every shade in between. When I think of gradients, I think of the goofy background on the Instagram logo. This will require a more intricate solution. Wouldn’t it be nice to style the percentage cells with a bicolor background? If the cell says 60%, we’d like the left 60% of the background to be blue with the remainder in red. You could have a table of workers with their names in one column and their progress towards their respective monthly sales goals in a second column, expressed as a percentage. Perhaps you need to color the background rectangle of a table cell. That’s all good and well, but imagine if you’re constrained within the confines of an existing rectangle. You can just put three individual rectangles next to each other in a stack panel with no margin in between them, and you’ve got your tricolored rectangle.
Without any other constraints, this is pretty straightforward. Let’s say you need a rectangle that is one third red, one third yellow, and one third blue. With that introduction out of the way, it’s time to fill up a XAML rectangle with more than one color! The Rationale Behind Filling a Rectangle with Multiple Colors It seems XAML and C# actually have every market covered! You can also use XAML and C# in Xamarin-another Microsoft product-to deploy to iOS and Android, as well as UWP.
#Uwp colorconverter windows 10#
If this seems like an awfully small market to target, keep in mind that UWP apps cover Windows 10 desktop as well. These unicorns of the mobile world run Universal Windows Platform (UWP) apps, which you can build natively with XAML and C#.
#Uwp colorconverter android#
Get, you will receive a wonderful Exception regarding a System._ComObject not being convertible to a Windows.UI.Color.We usually write about iOS and Android on the HangZone blog, but legend has it that there are some mobile devices out in the wild that run Windows.
Here's how I got this to work: public Color SelectedColor What's happening? I'm supposed to receive a Windows.UI.Color in value!ĮDIT: I have inspected "value.GetType()" and this is what I'm getting. When I run it, it throws in the line that says: var c = (Windows.UI.Color) value Public object ConvertBack(object value, Type targetType, object parameter, string language) Return Windows.UI.Color.FromArgb(c.A, c.R, c.G, c.B) Public object Convert(object value, Type targetType, object parameter, string language) This is what I have:Ĭonverter public class ColorConverter : IValueConverter I want to bind a property of this type in my ViewModel ( ViewModel.ModelColor) to a ColorPicker using a ValueConverter. I have defined a custom Color class in Windows Universal Application.