func TexToImg(text string) string {
m := image.NewRGBA(image.Rect(0, 0, 100, 100))
//blue := color.RGBA{0, 255, 0, 255}
n := rand.Intn(len(clolrs))
blue := clolrs[n]
draw.Draw(m, m.Bounds(), &image.Uniform{blue}, image.ZP, draw.Src)
flag.Parse()
fontBytes, err := ioutil.ReadFile(*fontfile)
if err != nil {
log.Println(err)
return ""
}
font, err := freetype.ParseFont(fontBytes)
if err != nil {
log.Println(err)
return ""
}
fg := image.Black
c := freetype.NewContext()
c.SetDPI(*dpi)
c.SetFont(font)
c.SetFontSize(*size)
c.SetClip(m.Bounds())
c.SetDst(m)
c.SetSrc(fg)
pt := freetype.Pt(10, 0+c.FUnitToPixelRU(font.UnitsPerEm()))
//转化为数组处理
texts := []string{text}
for _, s := range texts {
_, err = c.DrawString(s, pt)
if err != nil {
log.Println(err)
return ""
}
pt.Y += c.PointToFix32(*size * *spacing)
}
var buf bytes.Buffer
png.Encode(&buf, m)
return base64.StdEncoding.EncodeToString(buf.Bytes())
}
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+c.FUnitToPixelRU(font.UnitsPerEm()))
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.")
}
func Draw(text string, dotFunc Drawer) {
// 初期設定
dpi := 72
// size := int(8)
size := int(16)
spacing := 1.0
texts := []string{text}
once.Do(func() {
//// フォント読み込み
//fontBytes, err := ioutil.ReadFile(*fontfile)
//if err != nil {
// log.Println(err)
// return
//}
//font, err := freetype.ParseFont(fontBytes)
//if err != nil {
// log.Println(err)
// return
//}
// フォント読み込み
fontBytes, err := Asset("data/" + fontfile)
if err != nil {
log.Println(err)
return
}
font, err = freetype.ParseFont(fontBytes)
if err != nil {
log.Println(err)
return
}
})
// 描画設定
fg, bg := image.Black, image.White
rgba := image.NewRGBA(image.Rect(0, 0, size*utf8.RuneCountInString(text), size))
draw.Draw(rgba, rgba.Bounds(), bg, image.ZP, draw.Src)
c := freetype.NewContext()
c.SetDPI(dpi)
c.SetFont(font)
c.SetFontSize(float64(size))
c.SetClip(rgba.Bounds())
c.SetDst(rgba)
c.SetSrc(fg)
// Draw the text.
pt := freetype.Pt(0, 0+c.FUnitToPixelRU(font.UnitsPerEm()))
for _, s := range texts {
_, err := c.DrawString(s, pt)
if err != nil {
log.Println(err)
return
}
pt.Y += c.PointToFix32(float64(size) * spacing)
}
// 画像から文字表示
for jj, text := range texts {
for j := jj * size; j < (jj+1)*size; j++ {
for ii := 0; ii < utf8.RuneCountInString(text); ii++ {
for i := ii * size; i < (ii+1)*size; i++ {
r, _, _, _ := rgba.At(i, j).RGBA()
fmt.Print(dotFunc(ii, jj, i, j, r != 65535))
}
}
fmt.Println()
}
}
// 画像保存
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.")
}