func (m *CImage) drawString(text string) *CImage {
fg, bg := image.Black, &image.Uniform{color.RGBA{255, 255, 255, 255}}
draw.Draw(m, m.Bounds(), bg, image.ZP, draw.Src)
c := freetype.NewContext()
c.SetFontSize(m.config.FontSize)
c.SetClip(m.Bounds())
c.SetDst(m)
c.SetSrc(fg)
i := 0
for _, s := range text {
c.SetFont(m.config.fontManager.GetRandomFont())
charX := (int(c.PointToFix32(m.config.FontSize) >> 8)) * i
charY := int(c.PointToFix32(m.config.FontSize) >> 8)
charPt := freetype.Pt(charX, charY)
c.DrawString(string(s), charPt)
i = i + 1
}
return m
}
func main() {
flag.Parse()
// Read the font data.
fontBytes, err := ioutil.ReadFile(*fontfile)
if err != nil {
log.Println(err)
return
}
font, err := freetype.ParseFont(fontBytes)
if err != nil {
log.Println(err)
return
}
// Initialize the context.
fg, bg := image.Black, image.White
ruler := color.RGBA{0xdd, 0xdd, 0xdd, 0xff}
if *wonb {
fg, bg = image.White, image.Black
ruler = color.RGBA{0x22, 0x22, 0x22, 0xff}
}
rgba := image.NewRGBA(image.Rect(0, 0, 640, 480))
draw.Draw(rgba, rgba.Bounds(), bg, image.ZP, draw.Src)
c := freetype.NewContext()
c.SetDPI(*dpi)
c.SetFont(font)
c.SetFontSize(*size)
c.SetClip(rgba.Bounds())
c.SetDst(rgba)
c.SetSrc(fg)
switch *hinting {
default:
c.SetHinting(freetype.NoHinting)
case "full":
c.SetHinting(freetype.FullHinting)
}
// Draw the guidelines.
for i := 0; i < 200; i++ {
rgba.Set(10, 10+i, ruler)
rgba.Set(10+i, 10, ruler)
}
// Draw the text.
pt := freetype.Pt(10, 10+int(c.PointToFix32(*size)>>8))
for _, s := range text {
_, err = c.DrawString(s, pt)
if err != nil {
log.Println(err)
return
}
pt.Y += c.PointToFix32(*size * *spacing)
}
// Save that RGBA image to disk.
f, err := os.Create("out.png")
if err != nil {
log.Println(err)
os.Exit(1)
}
defer f.Close()
b := bufio.NewWriter(f)
err = png.Encode(b, rgba)
if err != nil {
log.Println(err)
os.Exit(1)
}
err = b.Flush()
if err != nil {
log.Println(err)
os.Exit(1)
}
fmt.Println("Wrote out.png OK.")
}