private void ArtistWorker_DoWork(object sender, DoWorkEventArgs e)
{
string ImagePath = (e.Argument as VaryObject).InPath;
string ExcelPath = (e.Argument as VaryObject).OutPath;
string WorkName = Path.GetFileNameWithoutExtension(ImagePath);
int LastProgressPersent = -1, ProgressPercent = 0;
//加载图像
Bitmap OriginalImage;
using (FileStream ImageStream = new FileStream(ImagePath, FileMode.Open))
OriginalImage = Bitmap.FromStream(ImageStream) as Bitmap;
if (OriginalImage == null)
{
throw new Exception("加载图片文件失败：" + ImagePath);
}
//缩小图像，太大了处理费时
if (OriginalImage.Height > 200)
{
OriginalImage = new Bitmap(OriginalImage, new Size(200 * OriginalImage.Width / OriginalImage.Height, 200));
}
using (ExcelPackage excel = new ExcelPackage(new FileInfo(ExcelPath)))
{
//设置文档属性
OfficeProperties properties = excel.Workbook.Properties;
properties.Author = "Leon - Excel Artist";
properties.Category = "Leon - Excel Artist";
properties.Comments = "此表格由 ExcelArtist 生成，访问：https://github.com/CuteLeon/ExcelArtist";
properties.Company = "Leon - Excel Artist";
properties.Created = DateTime.Now;
properties.HyperlinkBase = new Uri("https://github.com/CuteLeon/ExcelArtist");
properties.Manager = "Leon - Excel Artist";
properties.Subject = WorkName + " - Leon";
properties.Title = WorkName + " - Leon";
if (ArtistWorker.CancellationPending)
{
e.Cancel = true; return;
}
string ImageHash = OriginalImage.GetHashCode().ToString("X");
//初始化表
if (excel.Workbook.Worksheets.FirstOrDefault(s => s.Name == ImageHash) != null)
{
excel.Workbook.Worksheets.Delete(ImageHash);
}
excel.Workbook.Worksheets.Add(ImageHash);
ExcelWorksheet sheet = excel.Workbook.Worksheets[ImageHash];
if (sheet == null)
{
throw new Exception("创建 Sheet 失败");
}
/* 注意：
* 查阅资料得知，[X,Y] 从1开始，不是0
* Excel行高和列宽单位不统一，需要特殊设置
* ( 基础设置：RowHeight=1 & ColumnWidth=0.1 )
*/
//设置默认列宽和行高
//sheet.DefaultColWidth = 0.7;
//sheet.DefaultRowHeight = 4.2;
if (ArtistWorker.CancellationPending)
{
e.Cancel = true; return;
}
//开始核心任务
using (ExcelRange range = sheet.Cells[1, 1, OriginalImage.Height, OriginalImage.Width])
{
//设置列宽和行高
for (int Column = 0; Column < OriginalImage.Width; Column++)
{
sheet.Column(Column + 1).Width = 0.35;
}
;
for (int Line = 0; Line < OriginalImage.Height; Line++)
{
sheet.Row(Line + 1).Height = 2.1;
}
if (ArtistWorker.CancellationPending)
{
e.Cancel = true; return;
}
for (int Line = 0; Line < OriginalImage.Height; Line++)
{
for (int Column = 0; Column < OriginalImage.Width; Column++)
{
//System.Diagnostics.Debug.Print("第 {0} 行, 第 {1} 列", Line, Column);
range[Line + 1, Column + 1].Style.Fill.PatternType = OfficeOpenXml.Style.ExcelFillStyle.Solid;
range[Line + 1, Column + 1].Style.Fill.BackgroundColor.SetColor(OriginalImage.GetPixel(Column, Line));
if (ArtistWorker.CancellationPending)
{
e.Cancel = true; return;
}
}
ProgressPercent = 100 * Line / OriginalImage.Height;
if (LastProgressPersent != ProgressPercent)
{
LastProgressPersent = ProgressPercent;
//System.Diagnostics.Debug.Print("报告进度：" + ProgressPercent);
ArtistWorker.ReportProgress(LastProgressPersent);
}
}
}
if (ArtistWorker.CancellationPending)
{
e.Cancel = true; return;
}
//保存文档
excel.Save();
}
}