证件照排版

复制from PIL import Image

# 证件照排版：将多张1寸照片排列到6寸相纸上
# 1寸照片尺寸：25mm × 35mm (约 118px × 165px @300dpi)
# 6寸相纸尺寸：152mm × 102mm (约 1795px × 1205px @300dpi)

# 加载单张证件照
photo = Image.open("id_photo.jpg").resize((118, 165))

# 创建6寸画布（白色背景）
canvas = Image.new("RGB", (1795, 1205), "white")

# 排版参数：横向4张，纵向3张，间距10px
cols, rows = 4, 3
margin_x, margin_y = 10, 10
start_x = (1795 - (cols * 118 + (cols - 1) * margin_x)) // 2
start_y = (1205 - (rows * 165 + (rows - 1) * margin_y)) // 2

# 排列照片
for row in range(rows):
    for col in range(cols):
        x = start_x + col * (118 + margin_x)
        y = start_y + row * (165 + margin_y)
        canvas.paste(photo, (x, y))

canvas.save("6inch_layout.jpg")
print(f"已生成6寸排版，共{cols * rows}张1寸照片")

复制package main

import (
	"fmt"
	"image"
	"image/color"
	"image/jpeg"
	"os"

	"golang.org/x/image/draw"
)

func main() {
	// 加载证件照
	photoFile, _ := os.Open("id_photo.jpg")
	defer photoFile.Close()
	photo, _, _ := image.Decode(photoFile)

	// 缩放到1寸尺寸（300dpi下约118x165像素）
	resized := image.NewRGBA(image.Rect(0, 0, 118, 165))
	draw.BiLinear.Scale(resized, resized.Bounds(), photo, photo.Bounds(), draw.Over, nil)

	// 创建6寸画布（1795x1205像素）
	canvas := image.NewRGBA(image.Rect(0, 0, 1795, 1205))
	// 填充白色背景
	draw.Draw(canvas, canvas.Bounds(), &image.Uniform{color.White}, image.Point{}, draw.Src)

	// 排版：4列3行，间距10px
	cols, rows := 4, 3
	margin := 10
	startX := (1795 - (cols*118 + (cols-1)*margin)) / 2
	startY := (1205 - (rows*165 + (rows-1)*margin)) / 2

	for row := 0; row < rows; row++ {
		for col := 0; col < cols; col++ {
			x := startX + col*(118+margin)
			y := startY + row*(165+margin)
			draw.Draw(canvas, image.Rect(x, y, x+118, y+165), resized, image.Point{}, draw.Over)
		}
	}

	// 保存结果
	outFile, _ := os.Create("6inch_layout.jpg")
	defer outFile.Close()
	jpeg.Encode(outFile, canvas, &jpeg.Options{Quality: 95})
	fmt.Printf("已生成6寸排版，共%d张1寸照片\n", cols*rows)
}

复制// 浏览器端证件照排版（使用Canvas API）
// 适用于纯前端无服务器方案

async function layoutIDPhotos(photoFile) {
  const img = await loadImage(photoFile);
  
  // 1寸照片尺寸（300dpi下像素）
  const PHOTO_W = 118, PHOTO_H = 165;
  // 6寸相纸尺寸
  const PAPER_W = 1795, PAPER_H = 1205;
  
  const canvas = document.createElement('canvas');
  canvas.width = PAPER_W;
  canvas.height = PAPER_H;
  const ctx = canvas.getContext('2d');
  
  // 白色背景
  ctx.fillStyle = '#FFFFFF';
  ctx.fillRect(0, 0, PAPER_W, PAPER_H);
  
  // 排版参数：4列3行，间距10px
  const cols = 4, rows = 3, gap = 10;
  const startX = (PAPER_W - (cols * PHOTO_W + (cols - 1) * gap)) / 2;
  const startY = (PAPER_H - (rows * PHOTO_H + (rows - 1) * gap)) / 2;
  
  for (let row = 0; row < rows; row++) {
    for (let col = 0; col < cols; col++) {
      const x = startX + col * (PHOTO_W + gap);
      const y = startY + row * (PHOTO_H + gap);
      ctx.drawImage(img, x, y, PHOTO_W, PHOTO_H);
    }
  }
  
  // 导出为JPEG Blob
  return new Promise(resolve => {
    canvas.toBlob(blob => resolve(blob), 'image/jpeg', 0.95);
  });
}

function loadImage(file) {
  return new Promise((resolve, reject) => {
    const img = new Image();
    img.onload = () => resolve(img);
    img.onerror = reject;
    img.src = URL.createObjectURL(file);
  });
}

// 使用示例：
// document.getElementById('fileInput').addEventListener('change', async (e) => {
//   const blob = await layoutIDPhotos(e.target.files[0]);
//   const url = URL.createObjectURL(blob);
//   const a = document.createElement('a');
//   a.href = url;
//   a.download = '6inch_layout.jpg';
//   a.click();
// });