func TestLoadFonts(t *testing.T) {
if _, err := freetype.ParseFont(Default()); err != nil {
t.Fatalf("default font: %v", err)
}
if _, err := freetype.ParseFont(Monospace()); err != nil {
t.Fatalf("monospace font: %v", err)
}
}
// 画一个带有text的图片
func drawStringImage(text string, fontFile string) image.Image {
fontBytes, err := ioutil.ReadFile(fontFile)
if err != nil {
log.Fatalln(err)
}
font, err := freetype.ParseFont(fontBytes)
if err != nil {
log.Fatalln(err)
}
fg, bg := image.Black, image.White
rgba := image.NewRGBA(image.Rect(0, 0, 640, 480))
draw.Draw(rgba, rgba.Bounds(), bg, image.ZP, draw.Src)
c := freetype.NewContext()
c.SetDPI(72)
c.SetFont(font)
c.SetFontSize(12)
c.SetClip(rgba.Bounds())
c.SetDst(rgba)
c.SetSrc(fg)
// Draw the text.
pt := freetype.Pt(10, 10+int(c.PointToFix32(12)>>8))
for _, s := range strings.Split(text, "\r\n") {
_, err = c.DrawString(s, pt)
pt.Y += c.PointToFix32(12 * 1.5)
}
return rgba
}
func (a *Annotator) init() error {
// load the font
fontBytes, err := resources.Asset(fontfile)
if err != nil {
return err
}
font, err := freetype.ParseFont(fontBytes)
if err != nil {
return err
}
// Initialize the context.
fg := image.White
a.context = freetype.NewContext()
a.context.SetDPI(dpi)
a.context.SetFont(font)
a.context.SetFontSize(size)
a.context.SetClip(a.image.Bounds())
a.context.SetDst(a.image)
a.context.SetSrc(fg)
switch hinting {
default:
a.context.SetHinting(freetype.NoHinting)
case "full":
a.context.SetHinting(freetype.FullHinting)
}
return nil
}
// getFont returns the truetype.Font for the given font
// name.
func getFont(name string) (*truetype.Font, error) {
if f, ok := loadedFonts[name]; ok {
return f, nil
}
n, ok := FontMap[name]
if !ok {
return nil, fmt.Errorf("No matching font: %s", name)
}
pkg, err := build.Import(importString, "", build.FindOnly)
if err != nil {
return nil, err
}
path := filepath.Join(pkg.Dir, "fonts", n+".ttf")
file, err := os.Open(path)
if err != nil {
return nil, err
}
defer file.Close()
bytes, err := ioutil.ReadAll(file)
if err != nil {
return nil, err
}
font, err := freetype.ParseFont(bytes)
if err != nil {
loadedFonts[name] = font
}
return font, err
}
func (t *Tiler) setupDrawer() {
t.bondFudgeX = int(Floor(float64(t.TileWidth) / 80))
t.bondFudgeY = int(Floor(float64(t.TileHeight) / 80))
t.fontSize = int(Sqrt(float64(t.TileHeight*t.TileWidth)) / 4)
t.tileHorizShift = int(float64(t.TileWidth) / 10)
t.tileVertShift = int(float64(t.TileHeight) / 10)
t.tileHorizMargin = int(float64(t.TileWidth) / 20)
t.tileVertMargin = int(float64(t.TileHeight) / 20)
bytes, err := ioutil.ReadFile(t.FontPath)
if err != nil {
log.Panicf("Couldn't read font: %s", err)
}
t.font, err = freetype.ParseFont(bytes)
if err != nil {
log.Panicf("Couldn't parse font: %s", err)
}
// figure out how big a representative character is for approximate layout purposes
ex := '5'
fupe := t.font.FUnitsPerEm()
horiz := t.font.HMetric(fupe, t.font.Index(ex))
vert := t.font.VMetric(fupe, t.font.Index(ex))
t.fontX = int(horiz.LeftSideBearing)
t.fontWidth = int(horiz.AdvanceWidth)
t.fontY = int(vert.TopSideBearing)
t.fontHeight = int(vert.AdvanceHeight)
log.Printf("%#v", t)
}
func init() {
var err error
defaultFont, err = freetype.ParseFont(defaultFontData())
if err != nil {
panic(err)
}
}
// getFont returns the truetype.Font for the given font name or an error.
func getFont(name string) (*truetype.Font, error) {
fontLock.RLock()
f, ok := loadedFonts[name]
fontLock.RUnlock()
if ok {
return f, nil
}
path, err := fontPath(name)
if err != nil {
return nil, err
}
file, err := os.Open(path)
if err != nil {
return nil, errors.New("Failed to open font file: " + err.Error())
}
defer file.Close()
bytes, err := ioutil.ReadAll(file)
if err != nil {
return nil, errors.New("Failed to read font file: " + err.Error())
}
font, err := freetype.ParseFont(bytes)
if err == nil {
fontLock.Lock()
loadedFonts[name] = font
fontLock.Unlock()
} else {
err = errors.New("Failed to parse font file: " + err.Error())
}
return font, err
}
func (q *Quote) TextToImage() *image.RGBA {
spacing := 1.5
var fontsize float64 = 8
// read font
fontBytes, err := ioutil.ReadFile(os.Getenv("FONT_FILE"))
checkErr(err)
font, err := freetype.ParseFont(fontBytes)
checkErr(err)
// Initialize the context.
fg, bg := image.White, image.Transparent
// 755px by 378px is the size Vox uses
rgba := image.NewRGBA(image.Rect(0, 0, 755, 378))
draw.Draw(rgba, rgba.Bounds(), bg, image.ZP, draw.Src)
c := freetype.NewContext()
c.SetDPI(300)
c.SetFont(font)
c.SetFontSize(fontsize)
c.SetClip(rgba.Bounds())
c.SetDst(rgba)
c.SetSrc(fg)
// Draw the text
pt := freetype.Pt(50, 50+int(c.PointToFix32(fontsize)>>8))
lines := strings.Split(q.Text, "\n")
for _, s := range lines {
_, err = c.DrawString(s, pt)
checkErr(err)
pt.Y += c.PointToFix32(fontsize * spacing)
}
return rgba
}
// TODO(crawshaw): It looks like we need a gl.RegisterInit feature.
// TODO(crawshaw): The gldebug mode needs to complain loudly when GL functions
// are called before init, because often they fail silently.
func fpsInit() {
font := ""
switch runtime.GOOS {
case "android":
font = "/system/fonts/DroidSansMono.ttf"
case "darwin":
font = "/Library/Fonts/Andale Mono.ttf"
case "linux":
font = "/usr/share/fonts/truetype/droid/DroidSansMono.ttf"
default:
panic(fmt.Sprintf("go.mobile/app/debug: unsupported runtime.GOOS %q", runtime.GOOS))
}
b, err := ioutil.ReadFile(font)
if err != nil {
panic(err)
}
f, err := freetype.ParseFont(b)
if err != nil {
panic(err)
}
monofont.SetFont(f)
monofont.SetSrc(image.Black)
monofont.SetHinting(freetype.FullHinting)
toPx := func(x geom.Pt) int { return int(math.Ceil(float64(geom.Pt(x).Px()))) }
fps.Image = glutil.NewImage(toPx(50), toPx(12))
monofont.SetDst(fps.Image.RGBA)
monofont.SetClip(fps.Bounds())
monofont.SetDPI(72 * float64(geom.PixelsPerPt))
monofont.SetFontSize(12)
}
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
}
func makeImage(req *http.Request, caption, font string, pt, size, border, scale int, f func(x, y int) uint32) *image.RGBA {
d := (size + 2*border) * scale
csize := 0
if caption != "" {
if pt == 0 {
pt = 11
}
csize = pt * 2
}
c := image.NewRGBA(image.Rect(0, 0, d, d+csize))
// white
u := &image.Uniform{C: color.White}
draw.Draw(c, c.Bounds(), u, image.ZP, draw.Src)
for y := 0; y < size; y++ {
for x := 0; x < size; x++ {
r := image.Rect((x+border)*scale, (y+border)*scale, (x+border+1)*scale, (y+border+1)*scale)
rgba := f(x, y)
u.C = color.RGBA{byte(rgba >> 24), byte(rgba >> 16), byte(rgba >> 8), byte(rgba)}
draw.Draw(c, r, u, image.ZP, draw.Src)
}
}
if csize != 0 {
if font == "" {
font = "data/luxisr.ttf"
}
ctxt := fs.NewContext(req)
dat, _, err := ctxt.Read(font)
if err != nil {
panic(err)
}
tfont, err := freetype.ParseFont(dat)
if err != nil {
panic(err)
}
ft := freetype.NewContext()
ft.SetDst(c)
ft.SetDPI(100)
ft.SetFont(tfont)
ft.SetFontSize(float64(pt))
ft.SetSrc(image.NewUniform(color.Black))
ft.SetClip(image.Rect(0, 0, 0, 0))
wid, err := ft.DrawString(caption, freetype.Pt(0, 0))
if err != nil {
panic(err)
}
p := freetype.Pt(d, d+3*pt/2)
p.X -= wid.X
p.X /= 2
ft.SetClip(c.Bounds())
ft.DrawString(caption, p)
}
return c
}
func convertString2image(s string) (*image.RGBA, error) {
if debug {
fmt.Println("convertString2image")
}
dpi := float64(72.0)
//fontfile := "../font/MS Gothic.ttf"
//fontfile := "../font/VL.ttf"
fontfile := fontName
hinting := "none"
size := float64(17)
spacing := float64(0)
// Read the font data.
fontBytes, err := ioutil.ReadFile(fontfile)
if err != nil {
log.Println(err)
return nil, err
}
font, err := freetype.ParseFont(fontBytes)
if err != nil {
log.Println(err)
return nil, err
}
// Initialize the context.
fg, bg := image.Black, image.White
rgba := image.NewRGBA(image.Rect(0, 0, 16, 16))
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 text.
pt := freetype.Pt(-1, -3+int(c.PointToFix32(size)>>8))
_, err = c.DrawString(s, pt)
if err != nil {
log.Println(err)
return nil, err
}
pt.Y += c.PointToFix32(size * spacing)
return rgba, nil
}
func init() {
// Load the font.
fontBytes, err := ioutil.ReadFile("Impact.ttf")
if err != nil {
panic(fmt.Sprint("Error reading font: %s", err))
}
font, err = freetype.ParseFont(fontBytes)
if err != nil {
panic(fmt.Sprintf("Error parsing font: %s", err))
}
}
func initFont(fontPath string) (*truetype.Font, error) {
fontBytes, err := ioutil.ReadFile(fontPath)
if err != nil {
return nil, err
}
font, err := freetype.ParseFont(fontBytes)
if err != nil {
return nil, err
}
return font, nil
}
func GetFont(location string) (*truetype.Font, error) {
fontBytes, err := ioutil.ReadFile(location)
if err != nil {
return nil, err
}
font, err := freetype.ParseFont(fontBytes)
if err != nil {
return nil, err
}
return font, nil
}
func init() {
// Read the font data.
fontBytes, err := ioutil.ReadFile("luxisr.ttf")
if err != nil {
log.Fatal(err)
}
font, err = freetype.ParseFont(fontBytes)
if err != nil {
log.Fatal(err)
}
}
func init() {
fontData, err := Asset("font/Anonymous Pro Minus.ttf")
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
font, err = freetype.ParseFont(fontData)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
func NewFontData(fontpath string) *FontData {
// Read the font data.
fontBytes, err := ioutil.ReadFile(fontpath)
if err != nil {
log.Fatal(err)
}
font, err := freetype.ParseFont(fontBytes)
if err != nil {
log.Fatal(err)
}
return &FontData{font: font, name: fontpath, mtex: make(map[string]*FontTexture)}
}
func loadFont() (*truetype.Font, error) {
fontBytes, err := ioutil.ReadFile(*fontFile)
if err != nil {
log.Println(err)
return nil, err
}
font, err := freetype.ParseFont(fontBytes)
if err != nil {
log.Println(err)
return nil, err
}
return font, nil
}
// 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 loadFont(fontFileName string) *truetype.Font {
fontBytes, err := ioutil.ReadFile(path.Join(fontFolder, fontFileName))
if err != nil {
log.Println(err)
return nil
}
font, err := freetype.ParseFont(fontBytes)
if err != nil {
log.Println(err)
return nil
}
return font
}
func MustLoadFontAs(path, name string) {
if _, ok := basic_fonts[name]; ok {
panic(fmt.Sprintf("Cannot load two fonts with the same name: '%s'.", name))
}
data, err := ioutil.ReadFile(path)
if err != nil {
panic(err.Error())
}
font, err := freetype.ParseFont(data)
if err != nil {
panic(err.Error())
}
basic_fonts[name] = font
}
func loadFont(fontPath string) *truetype.Font {
b, err := ioutil.ReadFile(fontPath)
if err != nil {
log.Fatal(err)
return nil
}
font, err := freetype.ParseFont(b)
if err != nil {
log.Fatal(err)
return nil
}
return font
}
func init() {
im := image.NewRGBA(image.Rect(0, 0, tilesize, tilesize))
var buf bytes.Buffer
err := png.Encode(&buf, im)
if err != nil {
panic(err)
}
emptytile = buf.Bytes()
nstfont, err = freetype.ParseFont(luxiSansFontData())
if err != nil {
panic(err)
}
}
func LoadFontAs(path, name string) error {
if _, ok := basic_fonts[name]; ok {
return &guiError{fmt.Sprintf("Cannot load two fonts with the same name: '%s'.", name)}
}
data, err := ioutil.ReadFile(path)
if err != nil {
return err
}
font, err := freetype.ParseFont(data)
if err != nil {
return err
}
basic_fonts[name] = font
return nil
}
func NewRenderer() *Renderer {
r := Renderer{}
fontBytes, _ := ioutil.ReadFile(*fontfile)
r.font, _ = freetype.ParseFont(fontBytes)
r.img = image.NewRGBA(image.Rect(0, 0, *width, *height))
r.context = freetype.NewContext()
r.context.SetDPI(*dpi)
r.context.SetFont(r.font)
r.context.SetFontSize(*size)
r.context.SetClip(r.img.Bounds())
draw.Draw(r.img, r.img.Bounds(), &image.Uniform{color.RGBA{0, 0, 0, 255}}, image.ZP, draw.Src)
r.context.SetDst(r.img)
return &r
}
func init() {
fontPath := os.Getenv("TEMPWEB_FONT")
if fontPath == "" {
goPath := os.Getenv("GOPATH")
fontPath = filepath.Join(goPath,
"src/code.google.com/p/freetype-go/luxi-fonts/luximr.ttf")
}
fontBytes, err := ioutil.ReadFile(fontPath)
if err != nil {
log.Fatalf("Error loading font (try setting TEMPWEB_FONT): %v", err)
}
font, err = freetype.ParseFont(fontBytes)
if err != nil {
log.Fatalf("Error parsing font: %v", err)
}
}
func init() {
con = freetype.NewContext()
data, err := ioutil.ReadFile("C:/Windows/Fonts/simsun.ttc")
if err != nil {
fmt.Println("Can't load simsun.ttc")
return
}
font, err := freetype.ParseFont(data)
if err != nil {
fmt.Println("Can't parse simsun.ttc")
return
}
con.SetDPI(120)
con.SetFont(font)
con.SetFontSize(12)
}
// NewFont creates a new Font object based on the font file provided.
func NewFont(fontFile string) (*Font, error) {
font := &Font{}
fontData, err := ioutil.ReadFile(fontFile)
if err != nil {
return font, err
}
font.font, err = freetype.ParseFont(fontData)
if err != nil {
return font, err
}
return font, nil
}
func init() {
data, err := ioutil.ReadFile(`d:\consola.ttf`)
if err != nil {
os.Exit(1)
}
font, err := freetype.ParseFont(data)
if err != nil {
os.Exit(1)
}
con.SetDPI(72)
con.SetFont(font)
con.SetFontSize(20)
con.SetSrc(frc)
con.SetDst(img)
con.SetClip(img.Bounds())
draw.Draw(img, img.Bounds(), bgc, image.Point{0, 0}, draw.Src)
}
