10

FixedDocument を自動的に改ページするにはどうすればよいですか? 整形済みの Panel を DocViewer に配置するために使用できる次のコードがあります。この問題は、パネルが 1 ページを超えると発生します。今は、クリップするだけです。基本的に、ユーザーが見ているものを印刷するためのかなり一般的な方法を作成したいと考えています。私のアプローチは合理的ですか？ 

    public void CreateReport(Panel details)
    {
        FixedDocument fixedDoc = new FixedDocument();
        PageContent pageContent = new PageContent();
        FixedPage fixedPage = new FixedPage();

        fixedPage.DataContext = this.DataContext;
        fixedPage.Margin = new Thickness(10);

        fixedPage.Children.Add(details);
        ((System.Windows.Markup.IAddChild)pageContent).AddChild(fixedPage);
        fixedDoc.Pages.Add(pageContent);

        // This makes the array of controls invisibile, then climbs the details structure
        // and makes the controls within details appropriate for the DocumentViewwer (i.e. TextBoxes are
        // non-editable, no borders, no scroll bars, etc).
        prePrintPrepare(details, fixedPage, new FrameworkElement[] { controlToMakeInvisible });

        _dv = new DocViewer();
        _dv.documentViewer1.Document = fixedDoc;
        _dv.Show();
    }
4

3 に答える 3

5

私は自分の質問に答えるのが嫌いですが、次の方法で合理的な解決策が得られました 。

スコット

public static class PrintHelper
{
    public static FixedDocument GetFixedDocument(FrameworkElement toPrint, PrintDialog printDialog)
    {
        PrintCapabilities capabilities = printDialog.PrintQueue.GetPrintCapabilities(printDialog.PrintTicket);
        Size pageSize = new Size(printDialog.PrintableAreaWidth, printDialog.PrintableAreaHeight);
        Size visibleSize = new Size(capabilities.PageImageableArea.ExtentWidth, capabilities.PageImageableArea.ExtentHeight);
        FixedDocument 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));

        Size size = toPrint.DesiredSize;

        // Will assume for simplicity the control fits horizontally on the page.
        double yOffset = 0;
        while (yOffset < size.Height)
        {
            VisualBrush vb = new VisualBrush(toPrint);
            vb.Stretch = Stretch.None;
            vb.AlignmentX = AlignmentX.Left;
            vb.AlignmentY = AlignmentY.Top;
            vb.ViewboxUnits = BrushMappingMode.Absolute;
            vb.TileMode = TileMode.None;
            vb.Viewbox = new Rect(0, yOffset, visibleSize.Width, visibleSize.Height);

            PageContent pageContent = new PageContent();
            FixedPage page = new FixedPage();
            ((IAddChild)pageContent).AddChild(page);
            fixedDoc.Pages.Add(pageContent);
            page.Width = pageSize.Width;
            page.Height = pageSize.Height;

            Canvas 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;
    }

    public static void ShowPrintPreview(FixedDocument fixedDoc)
    {
        Window wnd = new Window();
        DocumentViewer viewer = new DocumentViewer();
        viewer.Document = fixedDoc;
        wnd.Content = viewer;
        wnd.ShowDialog();
    }
}
于 2011-02-24T20:10:34.040 に答える