func builtInFont() *truetype.Font {
font, err := freetype.ParseFont(misc.DejavusansTtf)
if err != nil {
logger.Warning.Printf("Could not parse default font because: %v", err)
return nil
}
return font
}
// ParseFont reads a font file and creates a freetype.Font type
func ParseFont(fontReader io.Reader) (*truetype.Font, error) {
fontBytes, err := ioutil.ReadAll(fontReader)
if err != nil {
return nil, err
}
font, err := freetype.ParseFont(fontBytes)
if err != nil {
return nil, err
}
return font, nil
}
func setFont(k wini.Key, place **truetype.Font) {
if v, ok := getLastString(k); ok {
bs, err := ioutil.ReadFile(v)
if err != nil {
logger.Warning.Printf(
"Could not get font data from '%s' because: %v", v, err)
return
}
font, err := freetype.ParseFont(bs)
if err != nil {
logger.Warning.Printf(
"Could not parse font data from '%s' because: %v", v, err)
return
}
*place = font
}
}
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)
// 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.")
}