CSharpMath
CSharpMath copied to clipboard
verybadcat
Support for Windows Forms apps
Is your feature request related to a problem? Please describe. Can you please add support for Windows Forms Apps?
@FoggyFinder Probably using WpfMath would be more suitable for WinForms/WPF?
Windows forms apps are already supported. CSharpMath supports everything that SkiaSharp supports: https://github.com/mono/SkiaSharp
The control isn't there though. Additional code to wire up CSharpMath.SkiaSharp and Windows Forms is needed for even the most basic of usages.
@Happypig375 WpfMath only supports WPF. @FoggyFinder Because WinForms are easier for designing
@pavledev As written in https://github.com/ForNeVeR/wpf-math/issues/281#issuecomment-704955818, there is a Windows Forms control that can wrap WPF controls.
Additional code to wire up
The three lines of code in https://github.com/verybadcat/CSharpMath#2-csharpmathskiasharp?
@pavledev https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.integration.elementhost?view=netcore-3.1#examples @charlesroddie Compared to a full view, that is not enough.
@Happypig375 Which additional code is required to use CSharpMath.SkiaSharp in WinForm?
@pavledev To use SkiaSharp in WinForms: Get https://www.nuget.org/packages/SkiaSharp.Views/ , create an SKControl and add to its paint event, or inherit from it and override its paint event. To draw CSharpMath things on it: get a MathPainter or TextPainter and Draw with it on the SKCanvas.
var painter = new CSharpMath.SkiaSharp.MathPainter(); painter.LaTeX = @"\frac\sqrt23"; painter.Draw(skControl1);
@charlesroddie I get error: argument 1: cannot convert from 'SkiaSharp.Views.Desktop.SKControl' to 'SkiaSharp.SKCanvas'
I'm not at my computer but in the paint event eventArgs you should get access to the canvas. Maybe e.Canvas or e.Surface.Canvas or something similar.
private void skControl1_PaintSurface(object sender, SkiaSharp.Views.Desktop.SKPaintSurfaceEventArgs e) { var painter = new CSharpMath.SkiaSharp.MathPainter(); painter.LaTeX = @"\frac\sqrt23"; painter.Draw(e.Surface.Canvas); }
@charlesroddie It's working now. Thank you.
@charlesroddie I can also add formula setting LaTeX property to MathPainter object and by calling skControl1.Invalidate(); from button click event right?
Yes an extremely simple control would be
type MathView() =
inherit SKControl()
let mathPainter = MathPainter()
member this.LaTeX
with set tex =
mathPainter.LaTeX <- tex
this.InvalidateSurface()
override _.OnPaintSurface(e) =
e.Surface.Canvas.Clear()
mathPainter.Draw(e.Surface.Canvas)
Use scroll bars from Windows Forms: https://docs.microsoft.com/en-us/dotnet/desktop/winforms/controls/hscrollbar-and-vscrollbar-controls-overview-windows-forms?view=netframeworkdesktop-4.8#:~:text=Windows%20Forms%20ScrollBar%20controls%20are%20used%20to%20provide,horizontally%20or%20vertically%20within%20an%20application%20or%20control.
@pavledev Consider asking WinForms - related Qs in a some kind of Q&A community. Your Q isn't related to this issue. Moreover it's not even related to CSharpMath itself.
Here is a quick and dirty sample:
using SkiaSharp.Views.Desktop;
using System.Windows.Forms;
namespace CSharpMathSample
{
public partial class Form1 : Form
{
private readonly Panel panel;
private readonly SKControl skControl;
private readonly string sample = @"Here are some text.
This text is made to be long enough to have the TextPainter of CSharpMath add a line break to this text automatically.
To demonstrate the capabilities of the TextPainter,
here are some math content:
First, a fraction in inline mode: $\frac34$
Next, a summation in inline mode: $\sum_{i=0}^3i^i$
Then, a summation in display mode: $$\sum_{i=0}^3i^i$$
After that, an integral in display mode: $$\int^6_{-56}x\ dx$$
Finally, an escaped dollar sign \$ that represents the start/end of math mode when it is unescaped.
Colors can be achieved via \backslash color{color}{content}, or \backslash \textit{color}{content},
where \textit{color} stands for one of the LaTeX standard colors.
\red{Colored text in text mode are able to automatically break up when spaces are inside the colored text, which the equivalent in math mode cannot do.}
\textbf{Styled} \texttt{text} can be achieved via the LaTeX styling commands.
The SkiaSharp version of this is located at CSharpMath.SkiaSharp.TextPainter;
and the Xamarin.Forms version of this is located at CSharpMath.Forms.TextView.
Was added in 0.1.0-pre4; working in 0.1.0-pre5; fully tested in 0.1.0-pre6. \[\frac{Display}{maths} \sqrt\text\mathtt{\ at\ the\ end}^\mathbf{are\ now\ incuded\ in\ Measure!} \]";
public Form1()
{
InitializeComponent();
panel = new Panel()
{
AutoScroll = true,
Dock = DockStyle.Fill
};
skControl = new SKControl()
{
Width = Width,
Height = Height
};
panel.Controls.Add(skControl);
this.Controls.Add(panel);
skControl.PaintSurface += SkControl_PaintSurface;
}
private void SkControl_PaintSurface(object sender, SKPaintSurfaceEventArgs e)
{
e.Surface.Canvas.Clear();
var painter = new CSharpMath.SkiaSharp.TextPainter
{
LaTeX = sample
};
painter.Draw(e.Surface.Canvas);
var r = painter.Measure(Width);
skControl.Width = (int)r.Width;
skControl.Height = (int)r.Height;
}
}
}