抖动文字 (#647)

Author: lianhong2758

README.md

@@ -719,7 +719,7 @@ print("run[CQ:image,file="+j["img"]+"]")
 
   `import _ "github.com/FloatTech/ZeroBot-Plugin/plugin/font"`
 
-  - [x] (用[终末体|终末变体|紫罗兰体|樱酥体|Consolas体|苹方体])渲染文字xxx
+  - [x] (用[终末体|终末变体|紫罗兰体|樱酥体|Consolas体|苹方体])渲染(抖动)文字xxx
 </details>
 <details>
   <summary>每日运势</summary>

plugin/font/main.go

@@ -2,7 +2,17 @@
 package font
 
 import (
+	"bytes"
+	"image"
+	"image/color"
+	"image/gif"
+	"math/rand"
+	"strings"
+
 	"github.com/FloatTech/floatbox/binary"
+	"github.com/FloatTech/floatbox/file"
+	"github.com/FloatTech/gg"
+	"github.com/FloatTech/imgfactory"
 	ctrl "github.com/FloatTech/zbpctrl"
 	"github.com/FloatTech/zbputils/control"
 	"github.com/FloatTech/zbputils/ctxext"
@@ -15,10 +25,10 @@ func init() {
 	control.Register("font", &ctrl.Options[*zero.Ctx]{
 		DisableOnDefault: false,
 		Brief:            "渲染任意文字到图片",
-		Help:             "- (用[字体])渲染文字xxx\n可选字体: [终末体|终末变体|紫罗兰体|樱酥体|Consolas体|苹方体]",
-	}).OnRegex(`^(用.+)?渲染文字([\s\S]+)$`).SetBlock(true).Limit(ctxext.LimitByUser).Handle(func(ctx *zero.Ctx) {
+		Help:             "- (用[字体])渲染(抖动)文字xxx\n可选字体: [终末体|终末变体|紫罗兰体|樱酥体|Consolas体|苹方体]",
+	}).OnRegex(`^(用.+)?渲染(抖动)?文字([\s\S]+)$`).SetBlock(true).Limit(ctxext.LimitByUser).Handle(func(ctx *zero.Ctx) {
 		fnt := ctx.State["regex_matched"].([]string)[1]
-		txt := ctx.State["regex_matched"].([]string)[2]
+		txt := ctx.State["regex_matched"].([]string)[3]
 		switch fnt {
 		case "用终末体":
 			fnt = text.SyumatuFontFile
@@ -35,11 +45,56 @@ func init() {
 		default:
 			fnt = text.FontFile
 		}
-		b, err := text.RenderToBase64(txt, fnt, 400, 20)
+		if ctx.State["regex_matched"].([]string)[2] == "" {
+			b, err := text.RenderToBase64(txt, fnt, 400, 20)
+			if err != nil {
+				ctx.SendChain(message.Text("ERROR: ", err))
+				return
+			}
+			ctx.SendChain(message.Image("base64://" + binary.BytesToString(b)))
+			return
+		}
+		nilx, nily := 1.0, 8.0
+		s := []*image.NRGBA{}
+		strlist := strings.Split(txt, "\n")
+		data, err := file.GetLazyData(fnt, control.Md5File, true)
 		if err != nil {
 			ctx.SendChain(message.Text("ERROR: ", err))
 			return
 		}
-		ctx.SendChain(message.Image("base64://" + binary.BytesToString(b)))
+		//获得画布预计
+		testcov := gg.NewContext(1, 1)
+		if err = testcov.ParseFontFace(data, 30); err != nil {
+			ctx.SendChain(message.Text("ERROR: ", err))
+			return
+		}
+		//取最长段
+		txt = ""
+		for _, v := range strlist {
+			if len([]rune(v)) > len([]rune(txt)) {
+				txt = v
+			}
+		}
+		w, h := testcov.MeasureString(txt)
+		for i := 0; i < 10; i++ {
+			cov := gg.NewContext(int(w+float64(len([]rune(txt)))*nilx)+40, int(h+nily)*len(strlist)+30)
+			cov.SetRGB(1, 1, 1)
+			cov.Clear()
+			if err = cov.ParseFontFace(data, 30); err != nil {
+				ctx.SendChain(message.Text("ERROR: ", err))
+				return
+			}
+			cov.SetColor(color.NRGBA{R: 0, G: 0, B: 0, A: 127})
+			for k, v := range strlist {
+				for kk, vv := range []rune(v) {
+					x, y := cov.MeasureString(string([]rune(v)[:kk]))
+					cov.DrawString(string(vv), x+float64(rand.Intn(5))+10+nilx, y+float64(rand.Intn(5))+15+float64(k)*(y+nily))
+				}
+			}
+			s = append(s, imgfactory.Size(cov.Image(), 0, 0).Image())
+		}
+		var buf bytes.Buffer
+		_ = gif.EncodeAll(&buf, imgfactory.MergeGif(5, s))
+		ctx.SendChain(message.ImageBytes(buf.Bytes()))
 	})
 }