The problem I'm trying to solve is that users do not know that the original document may not be what they are seeing in the viewer when there are layers.
A property that indicates
that a document has layers would allow the system to refuse to open the document.
The attached file lorem-ipsum.pdf is rendered incorrectly in PdfViewer. I suspect it has something to do with kerning, because monospace font is not affected. Adobe Acrobat, Foxit PDF Reader, and Chrome render the file correctly.
The file was created with Pandoc, open source software, converting a markdown file (.md) to .pdf.
When RadPdfViewer is in text selection mode and the user is trying to select a word by double-clicking on it, the last letter of the word is not selected when the word is followed by some symbols like '.', ':', '(', '...'
Also, the CaretPosition is not correct.
Steps to reproduce:
1. Load a PDF document with 0 pages
2. Enter some text in the search textbox and click the next/prev buttons
Expected: the search textbox should be either disabled or should ignore any search operation
Actual: an error occurs
Workaround:
Private Sub pdf_Viewer_DocumentLoaded(sender As Object, e As EventArgs)
If pdf_Viewer.Document.Pages.Count = 0 Then
pdf_Toolbar.SearchTextBox.Enabled = False
pdf_Toolbar.NextButton.Enabled = False
pdf_Toolbar.PreviousButton.Enabled = False
Else
pdf_Toolbar.SearchTextBox.Enabled = True
pdf_Toolbar.NextButton.Enabled = True
pdf_Toolbar.PreviousButton.Enabled = True
End If
End Sub
Use the attached pdf document and launch the PdfPrintPreviewDialog. As it is demonstrated in the gif file, the preview dialog moves the pages slower than the pdf viewer itself.
Expected behavior: the performance for navigating the pages should be at least identical.
This is the result with R3 2022:
This is the result with R2 2023 SP1:
Load a document with bookmarks and select the bookmarks options. Then, move the splitter:
Expected: the selected option (bookmarks) is unchanged
Actual: the selected option (bookmarks) is not preserved and it is reset
When creating many instances of RadPdfViewer:
static void Main(string[] args)
{
int i = 1;
try
{
Stopwatch stopwatch = Stopwatch.StartNew();
while (true)
{
using (RadPdfViewer pdfViewer = new RadPdfViewer())
{
}
Console.WriteLine($"iteration {i}, elapsed seconds: {stopwatch.Elapsed.TotalSeconds}");
i++;
}
}
catch (Exception e)
{
Console.WriteLine($"Exception occurred at iteration {i}");
Console.WriteLine(e);
Console.ReadLine();
}
}the following error occurs:
System.Runtime.InteropServices.ExternalException (0x80004005): A generic error occurred in GDI+. at System.Drawing.Bitmap.GetHicon() at Telerik.WinControls.PdfViewer.MouseHandlers.PanHandler..ctor(MouseHandlersController controller, IFixedDocumentPresenter presenter) at Telerik.WinControls.PdfViewer.MouseHandlers.MouseHandlersController.BuildHandlers(IFixedDocumentPresenter presenter) at Telerik.WinControls.PdfViewer.MouseHandlers.MouseHandlersController..ctor(IFixedDocumentPresenter presenter) at Telerik.WinControls.UI.RadPdfViewerElement..ctor() at Telerik.WinControls.UI.RadPdfViewer.CreateViewerElement() at Telerik.WinControls.UI.RadPdfViewer.CreateChildItems(RadElement parent) at Telerik.WinControls.RadControl.Telerik.WinControls.IComponentTreeHandler.CreateChildItems(RadElement parent) at Telerik.WinControls.RadElementTree.InitializeRootElement() at Telerik.WinControls.RadControl.Construct() at Telerik.WinControls.RadControl..ctor() at Telerik.WinControls.UI.RadPdfViewer..ctor()