因爲我瘋了與轉換PDF到這裏灰度
c# printing through PDF drivers, print to file option will output PS instead of PDF
我發現上面的回答(謝謝),但需要加以糾正給大家一點點可能需要:
Doc theDoc = new Doc();
theDoc.Read("test.pdf");
//doc.Rendering.ColorSpace = XRendering.ColorSpaceType.Gray;
//doc.SaveOptions.
//MyOp.Recolor(theDoc, (Page)theDoc.ObjectSoup[theDoc.Page]);
int pages = theDoc.PageCount;
for (int i = 0; i < pages; i++)
{
theDoc.PageNumber = i+1; // this is because numbering is from 1 :)
MyOp.Recolor(theDoc, (Page)theDoc.ObjectSoup[theDoc.Page]);
}
theDoc.Save("out.pdf");
theDoc.Clear();
該類仍然如其示例
public class MyOp
{
public static void Recolor(Doc doc, Page page)
{
RecolorOperation op = new RecolorOperation();
op.DestinationColorSpace = new ColorSpace(doc.ObjectSoup, ColorSpaceType.DeviceGray);
op.ConvertAnnotations = false;
op.ProcessingObject += Recoloring;
op.ProcessedObject += Recolored;
op.Recolor(page);
}
//public static void Recolor(Doc doc)
//{
// RecolorOperation op = new RecolorOperation();
// op.DestinationColorSpace = new ColorSpace(doc.ObjectSoup, ColorSpaceType.DeviceGray);
// op.ConvertAnnotations = false;
// op.ProcessingObject += Recoloring;
// op.ProcessedObject += Recolored;
// op.Recolor(doc);
//}
public static void Recoloring(object sender, ProcessingObjectEventArgs e)
{
PixMap pm = e.Object as PixMap;
if (pm != null)
{
ColorSpaceType cs = pm.ColorSpaceType;
if (cs == ColorSpaceType.DeviceCMYK)
e.Cancel = true;
e.Tag = cs;
}
}
public static void Recolored(object sender, ProcessedObjectEventArgs e)
{
if (e.Successful)
{
PixMap pm = e.Object as PixMap;
if (pm != null)
{
ColorSpaceType cs = (ColorSpaceType)e.Tag;
if (pm.Width > 1000)
pm.CompressJpx(30);
else if (cs == ColorSpaceType.DeviceRGB)
pm.CompressJpeg(30);
else
pm.Compress(); // Flate
}
}
}
}
不要忘記使用(不是其他版本),像魅力一樣工作。
using WebSupergoo.ABCpdf9.Objects;
using WebSupergoo.ABCpdf9.Operations;
請不要用'itext'標記你的問題,當它是關於另一個產品。 –