点选式验证码

随机生成文本或图形，并按照顺序点选对应内容进行校验。

安装

$ go get -u github.com/wenlng/go-captcha/v2@latest

$ go get -u github.com/wenlng/go-captcha/v2@latest

安装预置内嵌素材资源

$ go get -u github.com/wenlng/go-captcha-assets@latest

$ go get -u github.com/wenlng/go-captcha-assets@latest

实例

package main

import (
	"encoding/json"
	"fmt"
	"log"

	"github.com/golang/freetype/truetype"
	"github.com/wenlng/go-captcha-assets/bindata/chars"
	"github.com/wenlng/go-captcha-assets/resources/fonts/fzshengsksjw"
	"github.com/wenlng/go-captcha-assets/resources/images"
	"github.com/wenlng/go-captcha/v2/base/option"
	"github.com/wenlng/go-captcha/v2/click"
)

var textCapt click.Captcha

func init() {
  builder := click.NewBuilder()

  // fonts
	fonts, err := fzshengsksjw.GetFont()
	if err != nil {
		log.Fatalln(err)
	}

	// background images
	imgs, err := images.GetImages()
	if err != nil {
		log.Fatalln(err)
	}

	builder.SetResources(
		click.WithChars(chars.GetChineseChars()),
		click.WithFonts([]*truetype.Font{fonts}),
		click.WithBackgrounds(imgs),
	)
	
	textCapt = builder.Make()
}

func main() {
	captData, err := textCapt.Generate()
	if err != nil {
		log.Fatalln(err)
	}

	dotData := captData.GetData()
	if dotData == nil {
		log.Fatalln(">>>>> generate err")
	}

	dots, _ := json.Marshal(dotData)
	fmt.Println(">>>>> ", string(dots))

	err = captData.GetMasterImage().SaveToFile("./.caches/master.jpg", option.QualityNone)
	if err != nil {
		fmt.Println(err)
	}
	err = captData.GetThumbImage().SaveToFile("./.caches/thumb.png")
	if err != nil {
		fmt.Println(err)
	}
}

package main

import (
	"encoding/json"
	"fmt"
	"log"

	"github.com/golang/freetype/truetype"
	"github.com/wenlng/go-captcha-assets/bindata/chars"
	"github.com/wenlng/go-captcha-assets/resources/fonts/fzshengsksjw"
	"github.com/wenlng/go-captcha-assets/resources/images"
	"github.com/wenlng/go-captcha/v2/base/option"
	"github.com/wenlng/go-captcha/v2/click"
)

var textCapt click.Captcha

func init() {
  builder := click.NewBuilder()

  // fonts
	fonts, err := fzshengsksjw.GetFont()
	if err != nil {
		log.Fatalln(err)
	}

	// background images
	imgs, err := images.GetImages()
	if err != nil {
		log.Fatalln(err)
	}

	builder.SetResources(
		click.WithChars(chars.GetChineseChars()),
		click.WithFonts([]*truetype.Font{fonts}),
		click.WithBackgrounds(imgs),
	)
	
	textCapt = builder.Make()
}

func main() {
	captData, err := textCapt.Generate()
	if err != nil {
		log.Fatalln(err)
	}

	dotData := captData.GetData()
	if dotData == nil {
		log.Fatalln(">>>>> generate err")
	}

	dots, _ := json.Marshal(dotData)
	fmt.Println(">>>>> ", string(dots))

	err = captData.GetMasterImage().SaveToFile("./.caches/master.jpg", option.QualityNone)
	if err != nil {
		fmt.Println(err)
	}
	err = captData.GetThumbImage().SaveToFile("./.caches/thumb.png")
	if err != nil {
		fmt.Println(err)
	}
}

使用

创建实例

• builder.Make() 中文文本、字母/数字混合 点选
• builder.MakeWithShape() 图形点选

配置

TIP

配置举例：click.NewBuilder(click.WithXxxx(), click.WithXxxx(), ....) 或 builder.SetOptions(click.WithXxxx(), click.WithXxxx(), ....)

主图配置

• click.WithImageSize(option.Size) 设置主图尺寸，默认 300x220
• click.WithRangeLen(option.RangeVal) 设置随机内容长度范围
• click.WithRangeAnglePos([]option.RangeVal) 设置随机角度范围
• click.WithRangeSize(option.RangeVal) 设置随机内容大小范围
• click.WithRangeColors([]string) 设置随机颜色
• click.WithDisplayShadow(bool) 设置是否显示阴影
• click.WithShadowColor(string) 设置阴影颜色
• click.WithShadowPoint(option.Point) 设置阴影偏移位置
• click.WithImageAlpha(float32) 设置主图透明度
• click.WithUseShapeOriginalColor(bool) 设置是否使用图形原始颜色，"图形点选"有效

缩略图

• click.WithThumbImageSize(option.Size) 设置缩略尺寸，默认 150x40
• click.WithRangeVerifyLen(option.RangeVal) 设置校验内容的随机长度范围
• click.WithDisabledRangeVerifyLen(bool) 禁用校验内容的随机长度，与主图内容的长度保持一致
• click.WithRangeThumbSize(option.RangeVal) 设置随机缩略内容随机大小范围
• click.WithRangeThumbColors([]string) 设置缩略随机颜色范围
• click.WithRangeThumbBgColors([]string) 设置缩略随机背景颜色范围
• click.WithIsThumbNonDeformAbility(bool) 设置缩略图内容不变形，不受背景影响
• click.WithThumbBgDistort(int) 设置缩略图背景扭曲 option.DistortLevel1 (1-5)
• click.WithThumbBgCirclesNum(int) 设置缩略图绘制小圆点数量
• click.WithThumbBgSlimLineNum(int) 设置缩略图绘制线条数量

设置资源

TIP

配置举例：builder.SetResources(click.WithXxxx(), click.WithXxxx(), ....)

• click.WithChars([]string) 设置文本种子
• click.WithShapes(map[string]image.Image) 设置图形种子
• click.WithFonts([]*truetype.Font) 设置字体
• click.WithBackgrounds([]image.Image) 设置主图背景
• click.WithThumbBackgrounds([]image.Image) 设置缩略图背景

验证码数据

• GetData() map[int]*Dot 获取当前校验的信息
• GetMasterImage() imagedata.JPEGImageData 获取主图
• GetThumbImage() imagedata.PNGImageData 获取缩略图

关于验证码 "imagedata" API可参考 验证码图像。

图形点选预览