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 PDF Drag & Drop with ImageEnMView		  New Topic  Reply to Topic
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mdgodfrey

USA
52 Posts
Posted - Apr 30 2024 :  15:48:59  Show Profile  Reply
I can see how to move a PDF Page up or down by one page at a time but I am hoping to find a way to drag a page(s) a long distance and then drop it to the desired position.

I don't seem to be able to find a demo that does that for a PDF.
Any suggestions?

xequte

38222 Posts
Posted - Apr 30 2024 :  16:05:01  Show Profile  Reply
Hi

Is this for a PDF document loaded with PDFium? I.e. you want to maintain the PDF document as it is just reposition some pages within it?

Nigel
Xequte Software
www.imageen.com
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mdgodfrey

USA
52 Posts
Posted - Apr 30 2024 :  16:34:16  Show Profile  Reply
Yes and Yes
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xequte

38222 Posts
Posted - May 01 2024 :  23:32:46  Show Profile  Reply
Hi

We'll be releasing an update next week. It includes a new demo showing how to support drag/drop of pages to reorder them:

\Demos\PDFPageDragDrop\PDFPageDD.dpr

The important thing to remember is that TImageEnView.PDFViewer is the container of the PDF document. The TImageEnMView is only showing the content of TImageEnView.PDFViewer (i.e. via TImageEnMView.AttachedImageEnView), so when the pages are moved or deleted the TImageEnMView must command the TImageEnView.PDFViewer to move or delete them (and then the TImageEnMView will automatically refresh with the updated content).


Nigel
Xequte Software
www.imageen.com
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aleatprog

124 Posts
Posted - May 06 2024 :  13:15:40  Show Profile  Reply
Hi Nigel,

may I remember/ask you to visually anticipate the eventual drop position by a vertical or horizontal line (while holding the mouse buttom)?

With an easier page reorganisation and text annotations, the next update release will be really nice. Congratulations! :)

Ale
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xequte

38222 Posts
Posted - May 07 2024 :  21:29:23  Show Profile  Reply
Hi Ale

Yes, a line can be shown when dragging (using ietxShowInsertPointWhileDragging of ThumbnailOptionsEx).

Though I have seen some quirks with the moving code in PDFium.

Nigel
Xequte Software
www.imageen.com
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