Scroll to text highlight

Technical Support Apryse SDK
1

Given an existing text highlight (instance of HighlightAnnot), how can I make the PDFViewCtrl scroll to it?

2

You can get the annotation’s coordinates, in page space, with Annot.GetRect. You will need to convert these coordinates to scrollable space, and then use PDFViewCtrl.OnScroll as follows:

//focus 
view.SetCurrentPage(page_num);
view.ConvPagePtToScreenPt(px, py, page_num);
view.SetZoom((int)px, (int)py, view.GetZoom());

//center
int width = view.GetBufferWidth();
int height = view.GetBufferHeight();
int dx = (int)(px - (double)width/2 + 0.5);
int dy = (int)(py - (double)height/2 + 0.5);
view.OnScroll(dx, dy);

You can change the scroll position in PDFViewCtrl with SetHScrollPos and SetVScrollPos.

3

There is also a method PDFViewCtrl.ShowRect ( annot.GetRect() ) that may be handy.