Canvas.Views.Avalonia
1.0.9-prerelease
See the version list below for details.
dotnet add package Canvas.Views.Avalonia --version 1.0.9-prerelease
NuGet\Install-Package Canvas.Views.Avalonia -Version 1.0.9-prerelease
<PackageReference Include="Canvas.Views.Avalonia" Version="1.0.9-prerelease" />
paket add Canvas.Views.Avalonia --version 1.0.9-prerelease
#r "nuget: Canvas.Views.Avalonia, 1.0.9-prerelease"
// Install Canvas.Views.Avalonia as a Cake Addin #addin nuget:?package=Canvas.Views.Avalonia&version=1.0.9-prerelease&prerelease // Install Canvas.Views.Avalonia as a Cake Tool #tool nuget:?package=Canvas.Views.Avalonia&version=1.0.9-prerelease&prerelease
Update
The most active development continues in the cross-platform web version
https://github.com/Indemos/Canvas
Canvas and Open GL Stock and Financial Charts
Generic cross-platform real-time charts for Desktop apps.
The main purpose of this app is to be used as a charting tool for real-time financial applications, e.g. backtesters for trading strategies. Here is the most comprehensive guide dedicated to charting in .NET that I have seen so far. Nevertheless, trying various options from that guide I wasn't able to find anything flexible enough for my needs, so created my own. Usage samples can be found here or as more complete example in a separate repository.
Nuget
Install-Package Canvas.Views.WPF -Version 1.0.9-prerelease
Install-Package Canvas.Views.Avalonia -Version 1.0.9-prerelease
Drawing Methods
Currently available controls.
- CanvasControl - base
Canvas
control exposingDrawingContext
used withShapes
andGeometries
- CanvasPanelControl - a wrapper around SkiaSharp and Open GL
In order to add a different type of panel, e.g. GDI+
or Direct 2D
, you need to implement ICanvasControl
interface.
Chart Types
At the moment, there are four built-in chart types.
- Line - line
- Bar - polygon
- Area - polygon
- Candle - OHLC box, a mix of a line and a rectangle polygon
If there is a need to create a new chart type, then you need to implement IShape
interface.
Pan and Zoom
The chart is completely data-centric, thus in order to scale the chart you need to change the data source.
By default, the chart displays last 100 data points, as defined in IndexCount
property.
MinIndex = Items.Count - IndexCount
MaxIndex = Items.Count
To pan the chart to the left, subtract arbitrary value from both MinIndex
and MaxIndex
.
MinIndex -= 1
MaxIndex -= 1
To pan the chart to the right, do the opposite.
MinIndex += 1
MaxIndex += 1
To zoom in, increase MinIndex
and decrease MaxIndex
to decrease number of visible points.
MinIndex += 1
MaxIndex -= 1
To zoom out, do the opposite.
MinIndex -= 1
MaxIndex += 1
Data source structure
To simplify sycnhronization of multiple charts, data source has format of a list where each entry point has a time stamp and a set of Areas and Series that will be rendered in the relevant viewport.
[
DateTime
{
Area A
{
Line Series => double,
Candle Series => OHLC
},
Area B
{
Line Series => double,
Line Series => double
},
Area C
{
Bar Series => double
}
},
DateTime { ... },
DateTime { ... },
DateTime { ... }
]
- Area is a viewport, an actual chart, each viewport can show several types of series, e.g. a mix of candles and lines.
- Series is a single chart type to be displayed in the viewport, e.g. lines.
- Model is a data point of
dynamic
type, can accept different type of inputs, e.g. double or OHLC box.
At this moment, Painter
supports only horizontal orientation, so the axis X is used as an index scale that picks data points from the source list and axis Y is a value scale that represents the actual value of each data point.
Product | Versions Compatible and additional computed target framework versions. |
---|---|
.NET | net6.0 is compatible. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 was computed. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed. net8.0 was computed. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed. |
-
net6.0
- Avalonia (>= 0.10.12)
- Avalonia.Desktop (>= 0.10.12)
- Avalonia.Diagnostics (>= 0.10.12)
- Avalonia.ReactiveUI (>= 0.10.12)
- Avalonia.Skia (>= 0.10.12)
- Canvas.Source (>= 1.0.9-prerelease)
NuGet packages
This package is not used by any NuGet packages.
GitHub repositories
This package is not used by any popular GitHub repositories.
Version | Downloads | Last updated |
---|---|---|
1.1.1-prerelease | 171 | 4/14/2022 |
1.1.0-prerelease | 133 | 4/9/2022 |
1.0.9-prerelease | 135 | 4/5/2022 |
1.0.8-prerelease | 236 | 4/3/2022 |
1.0.5-prerelease | 137 | 3/26/2022 |