public override void OnEndPrint(PrintDocument document, PrintEventArgs e)
{
SysPrn.GlobalService.EndDoc(e.GraphicsContext);
}
// methods
public void Print()
{
PrintEventArgs printArgs = new PrintEventArgs();
this.OnBeginPrint(printArgs);
if (printArgs.Cancel)
{
return;
}
PrintController.OnStartPrint(this, printArgs);
if (printArgs.Cancel)
{
return;
}
// 原实现
//Graphics g = null;
//if (printArgs.GraphicsContext != null) {
// Graphics.FromHdc (printArgs.GraphicsContext.Hdc); //todo:
// printArgs.GraphicsContext.Graphics = g;
//}
// while there are more pages
PrintPageEventArgs printPageArgs;
do
{
QueryPageSettingsEventArgs queryPageSettingsArgs = new QueryPageSettingsEventArgs(
DefaultPageSettings.Clone() as PageSettings);
OnQueryPageSettings(queryPageSettingsArgs);
PageSettings pageSettings = queryPageSettingsArgs.PageSettings;
printPageArgs = new PrintPageEventArgs(
null /*g*/,
pageSettings.Bounds,
new Rectangle(0, 0, pageSettings.PaperSize.Width, pageSettings.PaperSize.Height),
pageSettings);
// 原TODO: We should create a graphics context for each page since they can have diferent paper
// size, orientation, etc. We use a single graphic for now to keep Cairo using a single PDF file.
// 现每个Page一个Graphics
printPageArgs.GraphicsContext = printArgs.GraphicsContext;
Graphics pg = PrintController.OnStartPage(this, printPageArgs);
// assign Graphics in printPageArgs
printPageArgs.SetGraphics(pg);
if (!printPageArgs.Cancel)
{
this.OnPrintPage(printPageArgs);
}
PrintController.OnEndPage(this, printPageArgs);
if (printPageArgs.Cancel)
{
break;
}
} while (printPageArgs.HasMorePages);
this.OnEndPrint(printArgs);
PrintController.OnEndPrint(this, printArgs);
}
public override void OnStartPrint(PrintDocument document, PrintEventArgs e)
{
SysPrn.GlobalService.CreateGraphicsContext(document);
e.GraphicsContext = new GraphicsPrinter(document);
SysPrn.GlobalService.StartDoc(e.GraphicsContext, document.DocumentName, string.Empty);
}