internal void Launch()
{
Console.WriteLine("Text Area...");
using var windowServer = new WindowServer();
using var renderingContext = new RenderingContext { Settings = new RenderingSettings { Samples = 8 } };
using var window = windowServer.CreateWindow(renderingContext);
window.Title = "Text Area";
window.BorderStyle = WindowBorderStyle.Sizable;
window.Size = (900, 900);
renderingContext.CurrentWindow = window;
var viewportSize = window.ViewportSize;
var windowSize = window.Size;
var backend = new DrawingBackend(new EntryPointLoader(renderingContext))
{
PixelScaling = viewportSize.height / windowSize.height
};
var openTypeCollection = new OpenTypeCollection();
var nameId = typeof(VectorGraphicsLauncher).Namespace + ".Resources.Hack-Regular.ttf";
openTypeCollection.AddFontResource(nameId, () => Assembly.GetExecutingAssembly().GetManifestResourceStream(nameId)!);
using var sharedContext = new SharedDrawingContext(backend, openTypeCollection);
using var drawingContext = new DrawingContext(sharedContext)
{
ClearColor = new RgbaColor(35, 35, 35, 255)
};
var styles = new MonospaceTextStyles(256);
var fontSubfamily = openTypeCollection.LookupFontSubfamily("Hack", FontSubfamily.Normal);
styles.GetStyle(fontSubfamily, new RgbaColor(255, 255, 255, 255), new RgbaColor(0, 0, 0, 0));
var textArea = new TextArea(styles, "Hack", fontSubfamily, 9);
var path = Path.Combine(Path.GetDirectoryName(Assembly.GetEntryAssembly()!.Location)!, "..", "..", "..", "TextAreaLauncher.cs");
textArea.Load(path);
const int textLeft = 20;
const int textTop = 30;
window.Scroll += (sender, e) =>
{
textArea.ScrollVertically(e.DeltaY * 30);
};
var hideCaret = true;
window.KeyDown += (sender, e) =>
{
switch (e.Keycode)
{
case Keycode.Up:
textArea.MoveUp();
hideCaret = false;
break;
case Keycode.Down:
textArea.MoveDown();
hideCaret = false;
break;
case Keycode.Left:
textArea.MoveLeft();
hideCaret = false;
break;
case Keycode.Right:
textArea.MoveRight();
hideCaret = false;
break;
case Keycode.F11:
textArea.FontPoints--;
break;
case Keycode.F12:
textArea.FontPoints++;
break;
case Keycode.Backspace:
textArea.Backspace();
hideCaret = false;
break;
case Keycode.Tab:
textArea.Tab();
hideCaret = false;
break;
case Keycode.Enter:
textArea.Enter();
hideCaret = false;
break;
}
};
window.TextInput += (sender, e) =>
{
textArea.Insert(e.CodePoint);
hideCaret = false;
};
window.MouseDown += (sender, e) =>
{
if (e.ChangedButton == MouseButton.Left)
{
var (x, y) = window.CursorPosition;
textArea.LeftMouseDown(x, y);
hideCaret = false;
}
};
var interruptThread = false;
void draw()
{
renderingContext.CurrentWindow = window;
drawingContext.SharedContext.PixelScaling = viewportSize.height / windowSize.height;
drawingContext.StartDrawing();
textArea.Render(drawingContext);
drawingContext.FinishDrawing();
renderingContext.SwapBuffers(window);
}
void resize()
{
viewportSize = window.ViewportSize;
windowSize = window.Size;
renderingContext.CurrentWindow = window;
backend.WindowSize = windowSize;
textArea.SetViewRectangle(textLeft, textTop, (windowSize.width - textLeft - 30), (windowSize.height - textTop - 50));
}
window.Resize += (sender, e) =>
{
resize();
draw();
};
var runLoop = MainRunLoop.Create(windowServer);
var text = default(DecoratedText<byte>);
var version = 0;
var th = new Thread(() =>
{
var regexList = new List<Regex>();
var styleList = new List<MonospaceTextStyle>();
regexList.Add(new Regex("\\b(break|case|class|const|else|false|float|for|foreach|" +
"if|int|internal|public|namespace|new|unsafe|using|string|switch|true|var|void)\\b"));
styleList.Add(styles.GetStyle(fontSubfamily, new RgbaColor(81, 153, 213, 255), new RgbaColor(0, 0, 0, 0)));
regexList.Add(new Regex(@"\b-?\d+(,\d+)*(\.\d+((e|E)\d+)?)?\b"));
styleList.Add(styles.GetStyle(fontSubfamily, new RgbaColor(0, 0, 0, 255), new RgbaColor(230, 180, 50, 255)));
regexList.Add(new Regex(@"""(\\.|[^""\\])*"""));
styleList.Add(styles.GetStyle(fontSubfamily, new RgbaColor(250, 180, 230, 255), new RgbaColor(0, 0, 0, 0)));
while (!interruptThread)
{
var t = text;
text = null;
var v = version;
if (t != null)
{
var txt = new StyledMonospaceText(t, styles);
var builder = new StringBuilder();
for (int i = 0; i < txt.LineCount; i++)
{
builder.Clear();
txt.CopyLineTo(i, builder);
var str = builder.ToString();
for (int j = 0; j < regexList.Count; j++)
{
var m = regexList[j].Match(str);
var s = styleList[j];
while (m.Success)
{
txt.StyleRange(s, (i, m.Index), (i, m.Index + m.Length));
m = m.NextMatch();
}
}
}
void f(int currentVersion, StyledMonospaceText newText)
{
runLoop.InvokeLater(0, (lag) =>
{
if (textArea.Version == currentVersion)
{
textArea.SetText(newText);
}
});
}
f(v, txt);
}
Thread.Sleep(500);
}
});
void blink(long lag)
{
textArea.HideCaret = hideCaret;
hideCaret = !hideCaret;
if (textArea.RequireRestyle)
{
text = textArea.GetText();
version = textArea.Version;
}
runLoop.InvokeLater(500, blink);
}
runLoop.InvokeLater(500, blink);
window.Closed += (sender, e) =>
{
backend.Dispose();
runLoop.Interrupt();
interruptThread = true;
};
resize();
runLoop.RecurringActions.Add((time) =>
{
if (textArea.RequireRender)
{
draw();
}
});
th.Start();
window.Visible = true;
runLoop.Run();
Console.WriteLine("Text Area done.");
}
