public static SizeF MeasureString(string text)
{
if (string.IsNullOrWhiteSpace(text))
{
return(SizeF.Empty);
}
if (text.EndsWith(" "))
{
text = $"{text.Substring(0, text.Length - 1)}(";
}
NanoVG.nvgFontFace(MainWindow.Nvg, "sans");
var sb = new float[4];
try
{
NanoVG.nvgTextBounds(MainWindow.Nvg, 0, 0, text, sb);
}
catch (Exception e)
{
Lumberjack.Error($"NvgHelper::MeasureString: {e.Message}");
}
var sfw = sb[2] - sb[0];
var sfh = sb[3] - sb[1];
return(new SizeF(sfw, sfh));
}
public static void RenderString(string s)
{
if (string.IsNullOrWhiteSpace(s))
{
return;
}
NanoVG.nvgTextAlign(MainWindow.Nvg, (int)NvgAlign.Top | (int)NvgAlign.Left);
NanoVG.nvgFontSize(MainWindow.Nvg, 16);
NanoVG.nvgFontFace(MainWindow.Nvg, "sans");
try
{
NanoVG.nvgText(MainWindow.Nvg, 0, 0, s);
}
catch (Exception e)
{
Lumberjack.Error($"NvgHelper::RenderString: {e.Message}");
}
}
private void Update(object sender, FrameEventArgs e)
{
Title = $"FPS: {Math.Round(RenderFrequency)} | RenderTime: {Math.Round(RenderTime * 1000)}ms";
// Grab the new keyboard state
Keyboard = OpenTK.Input.Keyboard.GetState();
if (_shouldDie)
{
Exit();
}
Selection.HoveringConnection = Graph.PickConnection(_mouseCanvasSpace.X, _mouseCanvasSpace.Y);
var err = GL.GetError();
if (err != ErrorCode.NoError)
{
Lumberjack.Error(err.ToString());
}
}
private static void SetupOpenGl()
{
// Set up caps
GL.Disable(EnableCap.DepthTest);
GL.Enable(EnableCap.RescaleNormal);
// Set up blending
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
// Set background color
GL.ClearColor(Color.White);
GlNanoVG.nvgCreateGL(ref Nvg, (int)NvgCreateFlags.AntiAlias | (int)NvgCreateFlags.StencilStrokes);
var rSans = NanoVG.nvgCreateFont(Nvg, "sans",
$"Resources{Path.DirectorySeparatorChar}Fonts{Path.DirectorySeparatorChar}latosemi.ttf");
if (rSans == -1)
{
Lumberjack.Error("Unable to load sans");
}
}