feat: Fonts are not loaded by default

README.md

@@ -248,6 +248,48 @@ func main() {
 #### 2.3.7 Example Use Etcd as store
 [captcha with etcd database as store](captcha_with_etcd_exmaple.md)
 
+
+#### 2.3.8 Load Fonts
+Because the font is loaded by default, resulting in unwanted data at compile time. Add compilation only when you use it.[#110](https://github.com/mojocn/base64Captcha/issues/110)
+
+```go
+import (
+	_ "github.com/mojocn/base64Captcha/fonts" // defaults load all embed fonts
+)
+...
+
+import (
+	_ "github.com/mojocn/base64Captcha/fonts/defaults" // load fonts without chinese
+)
+...
+
+import (
+	_ "embed"
+	dennnethree_dee "github.com/mojocn/base64Captcha/fonts/DENNEthree-dee"
+	"github.com/mojocn/base64Captcha/fonts/actionj"
+	"github.com/mojocn/base64Captcha/fonts/apothecary"
+)
+
+//go:embed a.ttf
+var your_fonts []byte
+
+var defaultfonts = map[string][]byte{
+	"ApothecaryFont":	apothecary.FontBytes,
+	"DENNEthree-dee":	dennnethree_dee.FontBytes,
+	"actionj":			actionj.FontBytes,
+	"your_name":		your_fonts,
+}
+
+base64Captcha.DefaultEmbeddedFonts = base64Captcha.NewEmbeddedFontsStorage(defaultfonts)
+
+base64Captcha.FontChinese = base64Captcha.DefaultEmbeddedFonts.LoadFontByName("your_name")
+base64Captcha.FontsAll = append(base64Captcha.DefaultEmbeddedFonts.LoadFontsByNames([]string{
+	"ApothecaryFont",
+	"DENNEthree-dee",
+	"actionj",
+}), base64Captcha.FontChinese)
+```
+
 ## 3. 🎨🎨🎨 Customization
 You can customize your captcha display image by implementing [interface driver](interface_driver.go) 
 and [interface item](interface_item.go).

driver_chinese.go

@@ -51,7 +51,7 @@ func NewDriverChinese(height int, width int, noiseCount int, showLineOptions int
 	}
 
 	if len(tfs) == 0 {
-		tfs = fontsAll
+		tfs = FontsAll
 	}
 
 	return &DriverChinese{Height: height, Width: width, NoiseCount: noiseCount, ShowLineOptions: showLineOptions, Length: length, Source: source, BgColor: bgColor, fontsStorage: fontsStorage, fontsArray: tfs}
@@ -69,7 +69,7 @@ func (d *DriverChinese) ConvertFonts() *DriverChinese {
 		tfs = append(tfs, tf)
 	}
 	if len(tfs) == 0 {
-		tfs = fontsAll
+		tfs = FontsAll
 	}
 	d.fontsArray = tfs
 

driver_language.go

@@ -106,15 +106,15 @@ func (d *DriverLanguage) DrawCaptcha(content string) (item Item, err error) {
 	//draw noise
 	if d.NoiseCount > 0 {
 		noise := RandText(d.NoiseCount, TxtNumbers+TxtAlphabet+",.[]<>")
-		err = itemChar.drawNoise(noise, fontsAll)
+		err = itemChar.drawNoise(noise, FontsAll)
 		if err != nil {
 			return
 		}
 	}
 
 	//draw content
 	//use font that match your language
-	err = itemChar.drawText(content, []*truetype.Font{fontChinese})
+	err = itemChar.drawText(content, []*truetype.Font{FontChinese})
 	if err != nil {
 		return
 	}

driver_language_test.go

@@ -9,7 +9,7 @@ import (
 )
 
 func TestDriverLanguage_DrawCaptcha(t *testing.T) {
-	ds := NewDriverLanguage(80, 240, 5, OptionShowSineLine|OptionShowSlimeLine|OptionShowHollowLine, 5, nil, nil, []*truetype.Font{fontChinese}, "emotion")
+	ds := NewDriverLanguage(80, 240, 5, OptionShowSineLine|OptionShowSlimeLine|OptionShowHollowLine, 5, nil, nil, []*truetype.Font{FontChinese}, "emotion")
 
 	for i := 0; i < 40; i++ {
 		_, q, _ := ds.GenerateIdQuestionAnswer()

driver_math.go

@@ -47,7 +47,7 @@ func NewDriverMath(height int, width int, noiseCount int, showLineOptions int, b
 	}
 
 	if len(tfs) == 0 {
-		tfs = fontsAll
+		tfs = FontsAll
 	}
 
 	return &DriverMath{Height: height, Width: width, NoiseCount: noiseCount, ShowLineOptions: showLineOptions, fontsArray: tfs, BgColor: bgColor, Fonts: fonts}
@@ -65,7 +65,7 @@ func (d *DriverMath) ConvertFonts() *DriverMath {
 		tfs = append(tfs, tf)
 	}
 	if len(tfs) == 0 {
-		tfs = fontsAll
+		tfs = FontsAll
 	}
 	d.fontsArray = tfs
 
@@ -118,7 +118,7 @@ func (d *DriverMath) DrawCaptcha(question string) (item Item, err error) {
 	//背景有文字干扰
 	if d.NoiseCount > 0 {
 		noise := RandText(d.NoiseCount, strings.Repeat(TxtNumbers, d.NoiseCount))
-		err = itemChar.drawNoise(noise, fontsAll)
+		err = itemChar.drawNoise(noise, FontsAll)
 		if err != nil {
 			return
 		}

driver_string.go

@@ -51,7 +51,7 @@ func NewDriverString(height int, width int, noiseCount int, showLineOptions int,
 	}
 
 	if len(tfs) == 0 {
-		tfs = fontsAll
+		tfs = FontsAll
 	}
 
 	return &DriverString{Height: height, Width: width, NoiseCount: noiseCount, ShowLineOptions: showLineOptions, Length: length, Source: source, BgColor: bgColor, fontsStorage: fontsStorage, fontsArray: tfs, Fonts: fonts}
@@ -69,7 +69,7 @@ func (d *DriverString) ConvertFonts() *DriverString {
 		tfs = append(tfs, tf)
 	}
 	if len(tfs) == 0 {
-		tfs = fontsAll
+		tfs = FontsAll
 	}
 
 	d.fontsArray = tfs

driver_string_test.go

@@ -29,7 +29,7 @@ func TestDriverString_DrawCaptcha(t *testing.T) {
 		wantItem Item
 		wantErr  bool
 	}{
-		{"string", fields{80, 240, 20, 100, 2, 5, nil, fontsAll}, args{"45Ad8"}, nil, false},
+		{"string", fields{80, 240, 20, 100, 2, 5, nil, FontsAll}, args{"45Ad8"}, nil, false},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {

fonts.go

@@ -6,30 +6,19 @@ import (
 	"github.com/golang/freetype/truetype"
 )
 
-var fontsSimple = DefaultEmbeddedFonts.LoadFontsByNames([]string{
-	"fonts/3Dumb.ttf",
-	"fonts/ApothecaryFont.ttf",
-	"fonts/Comismsh.ttf",
-	"fonts/DENNEthree-dee.ttf",
-	"fonts/DeborahFancyDress.ttf",
-	"fonts/Flim-Flam.ttf",
-	"fonts/RitaSmith.ttf",
-	"fonts/actionj.ttf",
-	"fonts/chromohv.ttf",
-})
+var DefaultEmbeddedFonts FontsStorage
 
 // var fontemoji = loadFontByName("fonts/seguiemj.ttf")
-var fontsAll = append(fontsSimple, fontChinese)
-var fontChinese = DefaultEmbeddedFonts.LoadFontByName("fonts/wqy-microhei.ttc")
+var FontsAll []*truetype.Font
+var FontChinese *truetype.Font
 
 // randFontFrom choose random font family.选择随机的字体
 func randFontFrom(fonts []*truetype.Font) *truetype.Font {
 	fontCount := len(fonts)
 
 	if fontCount == 0 {
 		//loading default fonts
-		fonts = fontsAll
-		fontCount = len(fontsAll)
+		fonts = FontsAll
 	}
 	index := rand.Intn(fontCount)
 	return fonts[index]

fonts/DENNEthree-dee/font.go

@@ -0,0 +1,8 @@
+package dennnethree_dee
+
+import (
+	_ "embed"
+)
+
+//go:embed DENNEthree-dee.ttf
+var FontBytes []byte

fonts/actionj/font.go

@@ -0,0 +1,8 @@
+package actionj
+
+import (
+	_ "embed"
+)
+
+//go:embed actionj.ttf
+var FontBytes []byte

fonts/apothecary/font.go

@@ -0,0 +1,8 @@
+package apothecary
+
+import (
+	_ "embed"
+)
+
+//go:embed ApothecaryFont.ttf
+var FontBytes []byte

fonts/chromohv/font.go

@@ -0,0 +1,8 @@
+package chromohv
+
+import (
+	_ "embed"
+)
+
+//go:embed chromohv.ttf
+var FontBytes []byte

fonts/comismsh/font.go

@@ -0,0 +1,8 @@
+package comismsh
+
+import (
+	_ "embed"
+)
+
+//go:embed Comismsh.ttf
+var FontBytes []byte

fonts/deborahFancydress/font.go

@@ -0,0 +1,8 @@
+package deborah_fancydress
+
+import (
+	_ "embed"
+)
+
+//go:embed DeborahFancyDress.ttf
+var FontBytes []byte

fonts/defaults/font.go

@@ -0,0 +1,44 @@
+// load fonts without chinese font
+package defaults
+
+import (
+	"github.com/mojocn/base64Captcha"
+	dennnethree_dee "github.com/mojocn/base64Captcha/fonts/DENNEthree-dee"
+	"github.com/mojocn/base64Captcha/fonts/actionj"
+	"github.com/mojocn/base64Captcha/fonts/apothecary"
+	"github.com/mojocn/base64Captcha/fonts/chromohv"
+	"github.com/mojocn/base64Captcha/fonts/comismsh"
+	deborah_fancydress "github.com/mojocn/base64Captcha/fonts/deborahFancydress"
+	flim_flam "github.com/mojocn/base64Captcha/fonts/flim-flam"
+	rita_smith "github.com/mojocn/base64Captcha/fonts/rita-smith"
+	three_dumb "github.com/mojocn/base64Captcha/fonts/three-dumb"
+)
+
+// defaultEmbeddedFontsFS Built-in font storage.
+var defaultEmbeddedFontsFS = map[string][]byte{
+	"3Dumb":             three_dumb.FontBytes,
+	"ApothecaryFont":    apothecary.FontBytes,
+	"Comismsh":          comismsh.FontBytes,
+	"DENNEthree-dee":    dennnethree_dee.FontBytes,
+	"DeborahFancyDress": deborah_fancydress.FontBytes,
+	"Flim-Flam":         flim_flam.FontBytes,
+	"RitaSmith":         rita_smith.FontBytes,
+	"actionj":           actionj.FontBytes,
+	"chromohv":          chromohv.FontBytes,
+}
+
+func init() {
+	base64Captcha.DefaultEmbeddedFonts = base64Captcha.NewEmbeddedFontsStorage(defaultEmbeddedFontsFS)
+	var fontsSimple = base64Captcha.DefaultEmbeddedFonts.LoadFontsByNames([]string{
+		"3Dumb",
+		"ApothecaryFont",
+		"Comismsh",
+		"DENNEthree-dee",
+		"DeborahFancyDress",
+		"Flim-Flam",
+		"RitaSmith",
+		"actionj",
+		"chromohv",
+	})
+	base64Captcha.FontsAll = append(fontsSimple, base64Captcha.FontChinese)
+}

fonts/flim-flam/font.go

@@ -0,0 +1,8 @@
+package flim_flam
+
+import (
+	_ "embed"
+)
+
+//go:embed Flim-Flam.ttf
+var FontBytes []byte

fonts/fonts.go

@@ -0,0 +1,22 @@
+package fonts
+
+import (
+	"github.com/mojocn/base64Captcha"
+)
+
+func init() {
+	base64Captcha.DefaultEmbeddedFonts = base64Captcha.NewEmbeddedFontsStorage(defaultEmbeddedFontsFS)
+	var fontsSimple = base64Captcha.DefaultEmbeddedFonts.LoadFontsByNames([]string{
+		"3Dumb",
+		"ApothecaryFont",
+		"Comismsh",
+		"DENNEthree-dee",
+		"DeborahFancyDress",
+		"Flim-Flam",
+		"RitaSmith",
+		"actionj",
+		"chromohv",
+	})
+	base64Captcha.FontChinese = base64Captcha.DefaultEmbeddedFonts.LoadFontByName("wqy-microhei")
+	base64Captcha.FontsAll = append(fontsSimple, base64Captcha.FontChinese)
+}

fonts/fonts_embedded_default.go

@@ -0,0 +1,28 @@
+package fonts
+
+import (
+	dennnethree_dee "github.com/mojocn/base64Captcha/fonts/DENNEthree-dee"
+	"github.com/mojocn/base64Captcha/fonts/actionj"
+	"github.com/mojocn/base64Captcha/fonts/apothecary"
+	"github.com/mojocn/base64Captcha/fonts/chromohv"
+	"github.com/mojocn/base64Captcha/fonts/comismsh"
+	deborah_fancydress "github.com/mojocn/base64Captcha/fonts/deborahFancydress"
+	flim_flam "github.com/mojocn/base64Captcha/fonts/flim-flam"
+	rita_smith "github.com/mojocn/base64Captcha/fonts/rita-smith"
+	three_dumb "github.com/mojocn/base64Captcha/fonts/three-dumb"
+	wqymicrohei "github.com/mojocn/base64Captcha/fonts/wqy-microhei"
+)
+
+// defaultEmbeddedFontsFS Built-in font storage.
+var defaultEmbeddedFontsFS = map[string][]byte{
+	"3Dumb":             three_dumb.FontBytes,
+	"ApothecaryFont":    apothecary.FontBytes,
+	"Comismsh":          comismsh.FontBytes,
+	"DENNEthree-dee":    dennnethree_dee.FontBytes,
+	"DeborahFancyDress": deborah_fancydress.FontBytes,
+	"Flim-Flam":         flim_flam.FontBytes,
+	"RitaSmith":         rita_smith.FontBytes,
+	"actionj":           actionj.FontBytes,
+	"chromohv":          chromohv.FontBytes,
+	"wqy-microhei":      wqymicrohei.FontBytes,
+}

fonts/rita-smith/font.go

@@ -0,0 +1,8 @@
+package rita_smith
+
+import (
+	_ "embed"
+)
+
+//go:embed RitaSmith.ttf
+var FontBytes []byte

fonts/three-dumb/font.go

@@ -0,0 +1,8 @@
+package three_dumb
+
+import (
+	_ "embed"
+)
+
+//go:embed 3Dumb.ttf
+var FontBytes []byte

fonts/wqy-microhei/font.go

@@ -0,0 +1,8 @@
+package wqymicrohei
+
+import (
+	_ "embed"
+)
+
+//go:embed wqy-microhei.ttc
+var FontBytes []byte