I am currently trying to print the contents of a content container (it only contains datagrids with information) and an image using PrintFixedDocument. It prints flawlessly on my machine (windows 10) with full image quality and on another pc which is windows 8, the quality is the same.
However when this is done on a Windows 7 pc the image quality becomes very poor and the final result is very blurred. This is a problem as the computer cannot be updated from windows 7 for various reasons, so im wondering if anyone else has experienced this and if so is there a workaround? Also could be an issue with my GetFixedDocument method, though I cannot work out why this would work on both win 10 and 8 but not 7.
NOTE THIS IS RUNNING FROM AN INSTALLED VERSION OF THE APPLICATION ON EACH PC
ALSO BEEN TRIED ON MULTIPLE PRINTERS ON ALL 3 OPERATING SYSTEMS
Any help would be appreciated
Xaml:
<StackPanel Margin="-105,146,66,0" Height="900" VerticalAlignment="Top" x:Name="PrintImageContextMenu">
<Image Canvas.ZIndex="0" Source="{Binding Coupon.OverlayImagePath}" Margin="0,-21,-76,108" Stretch="Fill" />
<ContentControl Content="{Binding}" ContentTemplateSelector="{StaticResource DataViewerDataTemplateSelector}" />
</StackPanel>
C#: public partial class CouponViewerView { public CouponViewerView() { InitializeComponent(); }
public void Print()
{
//Executes On Thread
Application.Current.Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority.Normal, (EventHandler)delegate
{
UpdateLayout();
var fixedDoc = PrintHelper.GetFixedDocument(StackPanelToPrint, new PrintDialog());
PrintHelper.ShowPrintPreview(fixedDoc);
}, null, null);
}
private void PrintCurrentForm(object sender, RoutedEventArgs e)
{
Print();
}
C# Print helper code:
public static void ShowPrintPreview(FixedDocument fixedDoc)
{
var wnd = new Window();
var viewer = new DocumentViewer();
viewer.Document = fixedDoc;
wnd.Content = viewer;
wnd.ShowDialog();
}
public static FixedDocument GetFixedDocument(FrameworkElement toPrint, PrintDialog printDialog)
{
var capabilities = printDialog.PrintQueue.GetPrintCapabilities(printDialog.PrintTicket);
var pageSize = new Size(printDialog.PrintableAreaWidth, printDialog.PrintableAreaHeight);
var visibleSize = new Size(capabilities.PageImageableArea.ExtentWidth, capabilities.PageImageableArea.ExtentHeight);
var fixedDoc = new FixedDocument();
//If the toPrint visual is not displayed on screen we neeed to measure and arrange it
toPrint.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
toPrint.Arrange(new Rect(new Point(0, 0), toPrint.DesiredSize));
//
var size = toPrint.DesiredSize;
//Will assume for simplicity the control fits horizontally on the page
double yOffset = 0;
while (yOffset < size.Height)
{
var vb = new VisualBrush(toPrint)
{
Stretch = Stretch.None,
AlignmentX = AlignmentX.Left,
AlignmentY = AlignmentY.Top,
ViewboxUnits = BrushMappingMode.Absolute,
TileMode = TileMode.None,
Viewbox = new Rect(0, yOffset, visibleSize.Width, visibleSize.Height)
};
var pageContent = new PageContent();
var page = new FixedPage();
((IAddChild)pageContent).AddChild(page);
fixedDoc.Pages.Add(pageContent);
page.Width = pageSize.Width;
page.Height = pageSize.Height;
var canvas = new Canvas();
FixedPage.SetLeft(canvas, capabilities.PageImageableArea.OriginWidth);
FixedPage.SetTop(canvas, capabilities.PageImageableArea.OriginHeight);
canvas.Width = visibleSize.Width;
canvas.Height = visibleSize.Height;
canvas.Background = vb;
page.Children.Add(canvas);
yOffset += visibleSize.Height;
}
return fixedDoc;
}
