go freetype

自由型

Go 绑定 FreeType 库。仅绑定高级 API。

安装

go get -u github.com/danielgatis/go-freetype

然后将包导入到您的代码中：

 import "github.com/danielgatis/go-freetype/freetype"

例子

下面描述的示例是用例之一。

 package main

import (
	"fmt"
	"image/png"
	"io/ioutil"
	"os"

	"github.com/danielgatis/go-findfont/findfont"
	"github.com/danielgatis/go-freetype/freetype"
)

func checkErr ( err error ) {
	if err != nil {
		fmt . Printf ( "Failed: %v n " , err )
		os . Exit ( 1 )
	}
}

func main () {
	fonts , err := findfont . Find ( "Arial" , findfont . FontRegular )
	checkErr ( err )

	data , err := ioutil . ReadFile ( fonts [ 0 ][ 2 ])
	checkErr ( err )

	lib , err := freetype . NewLibrary ()
	checkErr ( err )

	face , err := freetype . NewFace ( lib , data , 0 )
	checkErr ( err )

	err = face . Pt ( 32 , 72 )
	checkErr ( err )

	img , m , err := face . Glyph ( 'A' )
	checkErr ( err )

	f , err := os . Create ( "image.png" )
	checkErr ( err )

	err = png . Encode ( f , img )
	checkErr ( err )

	fmt . Printf ( "Image: %v n " , f . Name ())
	fmt . Printf ( "Metrics: %v n " , m )

	err = face . Done ()
	checkErr ( err )

	err = lib . Done ()
	checkErr ( err )
}

 ❯ go run main.go
Image: image.png
Metrics: &{23 23 -1 23 21 -11 3 30}

图片.png

执照

版权所有 (c) 2020 年至今 Daniel Gatis

根据 MIT 许可证获得许可