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Absolute positioning of UIElement in FlowDocument in WPF


Absolute positioning of UIElement in FlowDocument in WPF

By : officecoder
Date : November 21 2020, 03:00 PM
will help you You can use a StackPanel to "stack" multiple objects that inherit from UIElement. Hyperlink doesn't inherit from UIElement, but you can get around this by placing the Hyperlink inside a ContentControl.
Here is a working example:
code :
<FlowDocumentScrollViewer>
    <FlowDocument>
        <Paragraph>
            The maximum speed is
            <StackPanel>
                <Button>No way!</Button>
                <ContentControl HorizontalAlignment="Center">
                    <Hyperlink>150</Hyperlink>
                </ContentControl>
            </StackPanel>
            in this road!
        </Paragraph>
    </FlowDocument>
</FlowDocumentScrollViewer>
<FlowDocumentScrollViewer>
    <FlowDocument>
        <Paragraph>
            The maximum speed is
            <Grid>
                <Button>No way!</Button>
                <ContentControl HorizontalAlignment="Center">
                    <Hyperlink>150</Hyperlink>
                </ContentControl>
            </Grid>
            in this road!
        </Paragraph>
    </FlowDocument>
</FlowDocumentScrollViewer>


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WPF FlowDocument - Absolute Character Position

WPF FlowDocument - Absolute Character Position


By : user1888889
Date : March 29 2020, 07:55 AM
I hope this helps you . I didn't find a reliable way of converting absolute character positions into TextPosition instances.
My alternative solution was to modify the original parse to work on individual runs rather than capturing the whole text of the RichTextBox. Working with character positions that are relative to a specific Run instance has proved reliable for me. I think that moving my mindset more towards the WPF way of thinking has helped.
code :
// Get starting pointer
TextPointer navigator = flowDocument.ContentStart;

// While we are not at end of document
while (navigator.CompareTo(flowDocument.ContentEnd) < 0)
{
    // Get text pointer context
    TextPointerContext context = navigator.GetPointerContext(LogicalDirection.Backward);

    // Get parent as run
    Run run = navigator.Parent as Run;

    // If start of text element within run
    if (context == TextPointerContext.ElementStart && run != null)
    {
        // Get text of run
        string runText = run.Text;

        // ToDo: Parse run text
    }

    // Get next text pointer
    navigator = navigator.GetNextContextPosition(LogicalDirection.Forward);
}
WPF FlowDocument Page Break/Positioning

WPF FlowDocument Page Break/Positioning


By : user2283456
Date : March 29 2020, 07:55 AM
wish of those help Not sure if you are still battling with this issue, but you could try using FlowDocument.
if you write a wrapper around DocumentPaginator you'll be able to insert a header into the flowdoc. Also, you can set the flowdoc.PagePadding to a custom value, taking into account the printablePageHeight and the height of your content-size.
code :
using System.Globalization;
using System.Windows;
using System.Windows.Documents;
using System.Windows.Media;

namespace NPS.ClinicalEAudit.Controls
{

    public class FlowDocPaginator : DocumentPaginator
    {
        private DocumentPaginator _paginator;

        public FlowDocPaginator(FlowDocument flowDoc)
        {
            _paginator = ((IDocumentPaginatorSource) flowDoc).DocumentPaginator;

        }

        public override bool IsPageCountValid
        {
            get { return _paginator.IsPageCountValid; }
        }

        public override int PageCount
        {
            get { return _paginator.PageCount; }
        }

        public override Size PageSize
        {
            get { return _paginator.PageSize; }
            set { _paginator.PageSize = value; }
        }

        public override IDocumentPaginatorSource Source
        {
            get { return _paginator.Source; }
        }

        public override DocumentPage GetPage(int pageNumber)
        {
            // Get the requested page.
            DocumentPage page = _paginator.GetPage(pageNumber);

            // Wrap the page in a Visual object. You can then apply transformations
            // and add other elements.
            ContainerVisual newVisual = new ContainerVisual();
            newVisual.Children.Add(page.Visual);

            // Create a header.
            DrawingVisual header = new DrawingVisual();

            using (DrawingContext dc = header.RenderOpen())
            {
                Typeface typeface = new Typeface("Times New Roman");
                FormattedText text = new FormattedText("Page " +
                                                       (pageNumber + 1).ToString(), CultureInfo.CurrentCulture,
                                                       FlowDirection.LeftToRight, typeface, 14, Brushes.Black);

                // Leave a quarter inch of space between the page edge and this text.
                dc.DrawText(text, new Point(96 * 0.25, 96 * 0.25));
            }

            // Add the title to the visual.
            newVisual.Children.Add(header);

            // Wrap the visual in a new page.
            DocumentPage newPage = new DocumentPage(newVisual);
            return newPage;
        }

    }
}
Positioning UIElement on a Canvas

Positioning UIElement on a Canvas


By : user2571115
Date : March 29 2020, 07:55 AM
I wish this help you I have a canvas and a red rectangle laid on it. Rectangle has a MouseDown event handler implemented: , You can use the static functions on Canvas:
code :
Canvas.SetLeft(element, x);
Canvas.SetTop(element, y);
Absolute positioning (No layout manager) vs. absolute positioning in MiGlayout

Absolute positioning (No layout manager) vs. absolute positioning in MiGlayout


By : Paul
Date : March 29 2020, 07:55 AM
I wish this helpful for you Think about this. Even if you supply a singe font for your application, it will be rendered differently on different OSs, it can even be rendered differently on the same OS under different DPI.
Layout managers are your protection against these problems, sure, when you first start using them, they seem to get in the way, but once you get use to them, you'll never want to do without (try coding in VB and tell me otherwise)
Positioning UIElement in Custom Control

Positioning UIElement in Custom Control


By : Mr. Die
Date : March 29 2020, 07:55 AM
should help you out If you have to use a Grid, You can make your Grid have 3 columns and switch the TextBox Grid.Column based on your custom property.
code :
<Grid>
  <Grid.ColumnDefinitions>
    <ColumnDefinition Width="Auto" />
    <ColumnDefinition Width="*" />
    <ColumnDefinition Width="Auto" />
  </Grid.ColumnDefinitions>
  <Button Grid.Column="1"
          Content="Some Text" />
  <TextBox Text="Test">
    <TextBox.Style>
      <Style TargetType="{x:Type TextBox}">
        <Setter Property="Grid.Column"
                Value="0" />
        <Style.Triggers>
          <DataTrigger Binding="{Binding RelativeSource={RelativeSource FindAncestor,
                                                                        AncestorType={x:Type UserControl}},
                                          Path=Left}"
                        Value="True">
            <Setter Property="Grid.Column"
                    Value="2" />
          </DataTrigger>
        </Style.Triggers>
      </Style>
    </TextBox.Style>
  </TextBox>
</Grid>
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