Enum TrueTypeTarget

Namespace: Egami.Fonts

Assembly: Egami.Fonts.dll

Which rasterizer the TrueType interpreter answers for: what GETINFO tells the font and how instructions are softened.

public enum TrueTypeTarget

Fields

FreeType = 2: A FreeType-like target: version 40 with ClearType and subpixel positioning.
Gdi = 1: GDI ClearType, as measured: version 42 with ClearType, compatible widths and symmetric rendering (GETINFO 0x46C2A).
GdiPlus = 0: GDI+ with ClearTypeGridFit, as measured on Windows: rasterizer version 42 with ClearType (GETINFO 0x2C2A).

Examples

// The font's own TrueType instructions, run for GDI+, with its hinted advances: glyphs on whole pixels, spacing as Windows
// lays out ClearType text. Together with GDI+'s filter, sampling and gamma (1 + TextContrast/10 = 1.4), this is the closest
// Egami gets to System.Drawing's ClearTypeGridFit.
var label = new Font(face, 16)
{
    Hinting = FontHinting.Full,
    HintingTarget = TrueTypeTarget.GdiPlus,
    Metrics = FontMetrics.GridFitted,
    Edging = FontEdging.Lcd,
};
var gdiPlus = new CanvasOptions
{
    PixelGeometry = PixelGeometry.RgbHorizontal,
    LcdFilter = LcdFilter.Gdi,
    LcdSampling = LcdSampling.Gdi,
    TextGamma = 1.4f,
};
using (RasterCanvas<Rgb8> canvas = button.CreateCanvas(gdiPlus))
{
    // Measuring uses the same hinted advances, so centring is exact.
    float width = label.MeasureText("Start the course").Advance;
    canvas.DrawText("Start the course", new Vector2(MathF.Round((200 - width) / 2), 26), label, Rgba8.White);
}

Table of Contents

Enum TrueTypeTarget

Fields

Examples