本次程序编写主要为了将pdf word等文档转换为图片后设置不同的打印排版
前提 目标文件夹中的图片高宽都是一致的
/// <summary>
/// 合并图片
/// </summary>
/// <param name="savedictory">文件保存目录</param>
/// <param name="singlePageNumber">单页排版</param>
/// <param name="path">文件列表</param>
///
public static void MergedImage(string[] path, SinglePageNumber singlePageNumber,string savedictory)
{
//获取目录路径列表
var i = path.Length % (int)singlePageNumber > 0 ? (path.Length / (int)singlePageNumber + 1) : path.Length / (int)singlePageNumber;
for (int s = 0; s < i; s++)
{
List<Bitmap> bitmapList = new List<Bitmap>();
List<string> imgPathTake = path.Skip((s - 1) * (int)singlePageNumber).Take((int)singlePageNumber).ToList();
foreach (var pathItem in imgPathTake)
bitmapList.Add(new Bitmap(pathItem));
//2=1x2 4=2x2 6=2x3 9=3x3 16=4x4
Bitmap map = null;
switch (singlePageNumber)
{
case SinglePageNumber.two:
map = mergeImage(2, 1, bitmapList);
break;
case SinglePageNumber.four:
map = mergeImage(2, 2, bitmapList);
break;
case SinglePageNumber.six:
map = mergeImage(3, 2, bitmapList);
break;
case SinglePageNumber.nine:
map = mergeImage(3, 3, bitmapList);
break;
case SinglePageNumber.Sixteen:
map = mergeImage(4, 4, bitmapList);
break;
default:
break;
}
map.Save(savedictory + "\\" + s+".png");
}
}
/// <summary>
/// 合并图片文件 传入的图片宽高要一致
/// </summary>
/// <param name="wi">一排有几张</param>
/// <param name="hi">一列有几张</param>
/// <param name="mapList"></param>
public static Bitmap mergeImage(int wi, int hi, List<Bitmap> mapList)
{
int width = mapList.First().Width;
int height = mapList.First().Height;
Bitmap bitmap = new Bitmap(width * wi, height * hi);
//x表示图片在第几行y表示图片在第几列
int mapIndex = 0;
for (int y = 1; y <= hi; y++)
{
for (int x = 1; x <= wi; x++)
{
if (mapIndex == mapList.Count )
{
foreach (var item in mapList)
item.Dispose();
return bitmap;
}
var map = mapList[mapIndex];
mapIndex++;
for (int w = 1; w <= width; w++)
for (int h = 1; h <= height; h++)
{
var color = map.GetPixel(w - 1, h - 1);
bitmap.SetPixel(((x-1)*width)+w - 1, ((y - 1) * height) + h - 1, color);
}
}
}
foreach (var item in mapList)
item.Dispose();
return bitmap;
}
/// <summary>
/// 每版打印几页 单页的不用处理
/// </summary>
public enum SinglePageNumber
{
two = 2,
four = 4,
six = 6,
nine = 9,
Sixteen = 16,
}
设置图片排版为2*3的效果
string dictory = @"D:\test\testpdf2convert\";
string[] path = System.IO.Directory.GetFiles(dictory);
ImagePrintHp.MergedImage(path, SinglePageNumber.six, dictory);
效果
2*2效果
