Rank: Newbie
Groups: Registered
Joined: 3/23/2016(UTC) Posts: 1 
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Hi,
I used both controls, the WPF and the WinForms control (WinForms preferred).
My problem is the following:
First, the user zooms into a page inside a PDF document.
Then, he'd like to search for a specific text.
While both functions (Zoom and Highlighting) works perfectly when the whole page is shown,
there is a problem to get Highlighted text into the visible area of a zoomed page.
Is there an explanation how to accomplish that?
Currently, I have two dlls referenced in my project.
PataGames.Pdf.Winforms and
PataGames.Pdf.
Many thanks for your help
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Rank: Administration
Groups: Administrators
Joined: 1/5/2016(UTC)
Posts: 1,138
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I don't quite understand there you have a problems. Are you use PdfToolStripSearch or implements the search routine yourself via PdfSearch Class? If I understand you correctly, in order to determine whether the text on the page is visible, you can get the bounding boxes of each found characters in the page's coordinates. Code:
var textInfo = Document.Pages[pageIndex].Text.GetTextInfo(e.CharIndex, e.CharsCount);
Next you can convert them to the control's coordinate system. Code:
var pt1 = pdfViewer1.PageToDevice(rc.left, rc.top, pageIndex);
var pt2 = pdfViewer1.PageToDevice(rc.right, rc.bottom, pageIndex);
And then compare these coordinates with PdfViewer's ClientArea. Edited by user Wednesday, March 23, 2016 8:15:07 PM(UTC)
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