/// <summary>
/// 生成PDF
/// </summary>
/// <param name="htmlText"></param>
/// <param name="widthMillimeters"></param>
/// <param name="heightMillimeters"></param>
/// <param name="IsThermalPrinter"></param>
internal byte[] GetPDF(string htmlText, double widthMillimeters, ref double heightMillimeters, bool IsThermalPrinter, PaperMargins margins)
{
int dpi = GetDPI();
double zoom = 1 * (GetWindowsScaling() / 100.0);
OpenHtmlToPdf.PaperSize size = null;
if (IsThermalPrinter)
{
size = new OpenHtmlToPdf.PaperSize(Length.Millimeters(widthMillimeters), Length.Millimeters(10));
}
else
{
size = new OpenHtmlToPdf.PaperSize(Length.Millimeters(widthMillimeters), Length.Millimeters(heightMillimeters));
}
IPdfDocument doc = Pdf.From(htmlText).EncodedWith("utf-8");
byte[] finalPDF = null;
finalPDF = doc.WithResolution(dpi).WithObjectSetting("load.zoomFactor", zoom.ToString()).WithObjectSetting("web.enableIntelligentShrinking", "false").WithMargins(margins).OfSize(size).Content();
var document = PdfReader.Open(new MemoryStream(finalPDF), PdfDocumentOpenMode.InformationOnly);
int numberOfPages = document.PageCount;
if (numberOfPages > 1 && IsThermalPrinter)
{
heightMillimeters = 10 * numberOfPages;
finalPDF = doc.WithResolution(dpi).WithObjectSetting("load.zoomFactor", zoom.ToString()).WithObjectSetting("web.enableIntelligentShrinking", "false").WithMargins(margins).OfSize(new OpenHtmlToPdf.PaperSize(Length.Millimeters(widthMillimeters), Length.Millimeters(heightMillimeters))).Content();
}
//File.WriteAllText("y:\\test1111.html", htmlText);
//using (FileStream fs = new FileStream("y:\\test1111.pdf", FileMode.OpenOrCreate, FileAccess.ReadWrite))
//{
// fs.Write(finalPDF, 0, finalPDF.Length);
//}
return(finalPDF);
}
public static IPdfDocument OfSize(this IPdfDocument pdfDocument, PaperSize paperSize)
{
return pdfDocument
.WithGlobalSetting("size.width", paperSize.Width)
.WithGlobalSetting("size.height", paperSize.Height);
}