public string GetPdfImage(PdfPage p, string imgname, int contentRef, ImageFormat imf, byte[] ba, int width, int height)
{
PdfImageEntry ie;
if (imgname != null)
{
ie = (PdfImageEntry) images[imgname];
if (ie != null)
{
p.AddResource(ie, contentRef);
return ie.name;
}
}
else
imgname = "I" + (images.Count + 1).ToString();
ie = new PdfImageEntry(pa, p, contentRef, imgname, imf, ba, width, height);
images.Add(imgname, ie);
return ie.name;
}
public void RunPages(Pages pgs) // this does all the work
{
foreach (Page p in pgs)
{
//Create a Page Dictionary representing a visible page
page=new PdfPage(anchor);
content=new PdfContent(anchor);
PdfPageSize pSize=new PdfPageSize((int) r.ReportDefinition.PageWidth.Points,
(int) r.ReportDefinition.PageHeight.Points);
page.CreatePage(pageTree.objectNum,pSize);
pageTree.AddPage(page.objectNum);
//Create object that presents the elements in the page
elements=new PdfElements(page, pSize);
ProcessPage(pgs, p);
// after a page
content.SetStream(elements.EndElements());
page.AddResource(fonts,content.objectNum);
page.AddResource(patterns,content.objectNum);
//get the pattern colorspace...
PatternObj po = new PatternObj(anchor);
page.AddResource(po,content.objectNum);
int size=0;
tw.Write(page.GetPageDict(filesize,out size),0,size);
filesize += size;
tw.Write(content.GetContentDict(filesize,out size),0,size);
filesize += size;
tw.Write(po.GetPatternObj(filesize, out size),0,size);
filesize += size;
}
return;
}
/// <summary>
/// Create the image Dictionary
/// </summary>
public PdfImageEntry(PdfAnchor pa, PdfPage p, int contentRef, string nm, ImageFormat imgf, byte[] im, int width, int height):base(pa)
{
name=nm;
imf = imgf;
ba=im;
string filter;
string colorSpace;
if (imf == ImageFormat.Jpeg)
{
filter = "/DCTDecode";
switch (JpgParser.GetColorSpace(ref im))
{
case 0:
colorSpace = "/DeviceRGB";
break;
case 1:
colorSpace = "/DeviceGray";
break;
case 3:
colorSpace = "/DeviceRGB";
break;
case 4:
colorSpace = "/DeviceCMYK";
break;
default:
colorSpace = "/DeviceRGB";
break;
}
}
else if (imf == ImageFormat.Png) // TODO: this still doesn't work
{
filter = "/FlateDecode /DecodeParms <</Predictor 15 /Colors 3 /BitsPerComponent 8 /Columns 80>>";
colorSpace = "/DeviceRGB";
}
else if (imf == ImageFormat.Gif) // TODO: this still doesn't work
{
filter = "/LZWDecode";
colorSpace = "/DeviceRGB";
}
else
{
filter = "";
colorSpace = "";
}
imgDict=string.Format("\r\n{0} 0 obj<</Type/XObject/Subtype /Image /Width {1} /Height {2} /ColorSpace {5} /BitsPerComponent 8 /Length {3} /Filter {4} >>\nstream\n",
this.objectNum,width, height, ba.Length, filter, colorSpace);
p.AddResource(this, contentRef);
}
public PdfElements(PdfPage pg, PdfPageSize pageSize)
{
p = pg;
pSize=pageSize;
elements = new StringBuilder();
}
