From abd9531fb06a37f84cf5d90ad459ab36dcd26d3d Mon Sep 17 00:00:00 2001
From: lixiangwuxian <mail@lxtend.com>
Date: Wed, 9 Oct 2024 01:53:00 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=94=AF=E6=8C=81=E6=8D=A2=E8=A1=8C?=
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---
 service/xibao/image_gen.go | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/service/xibao/image_gen.go b/service/xibao/image_gen.go
index 8ac5ad1..719aafb 100644
--- a/service/xibao/image_gen.go
+++ b/service/xibao/image_gen.go
@@ -2,6 +2,7 @@ package xibao
 
 import (
 	"log"
+	"strings"
 
 	"github.com/fogleman/gg"
 )
@@ -11,6 +12,7 @@ func GenerateCongratulationImage(text string, outputFile string) {
 	im, err := gg.LoadImage("./resource/xibao_background.png") // 需要提前准备的背景图片
 	if err != nil {
 		log.Print("无法加载喜报图片:", err)
+		return
 	}
 
 	// 创建与背景图片大小相同的画布
@@ -24,12 +26,27 @@ func GenerateCongratulationImage(text string, outputFile string) {
 	// 设置字体和大小，字体文件需要自备，放在合适的路径
 	if err := dc.LoadFontFace("./resource/font.ttf", 96); err != nil {
 		log.Print("无法加载字体:", err)
+		return
 	}
 
+	// 设置文本颜色为红色
 	dc.SetRGB(1, 0, 0)
 
-	dc.DrawStringAnchored(text, float64(width)/2, float64(height)/2, 0.5, 0.5)
+	// 将文本按 \n 分割为多行
+	lines := strings.Split(text, "\n")
 
+	// 设置初始绘制的 y 位置，可以根据需要调整
+	startY := float64(height) / 2
+	lineHeight := 120.0 // 行高，可以根据字体大小调整
+
+	// 居中绘制每一行
+	for i, line := range lines {
+		x := float64(width) / 2
+		y := startY + float64(i)*lineHeight
+		dc.DrawStringAnchored(line, x, y, 0.5, 0.5)
+	}
+
+	// 将生成的图片保存为输出文件
 	err = dc.SavePNG(outputFile)
 	if err != nil {
 		log.Print("无法保存生成的图片:", err)