Dear DevExpress team,
I need to obtain the coordinates of a clicked point in a pdf file. As far as I understand, the TdxPDFViewerCustomHitTest.HitPoint contains the current coordinates within the control expressed in points. Is there a way to find out the corresponding coordinates where in the pdf file expressed in pdf user space coordinates?
Thanks,
Matthias.
Hello Matthias,
You can try working with the Position protected property of a HitTest object. This property contains information about the Page index and required coordinates.
I have the same problem as MatthiasN…
When I click on a certain page of the PDF, I want to obtain the coordinates (on the PDF page) and the page number.
So, coordinates on the PDF page and not the coordinates on the dxPDFViewer component. Those I can get with onMouseDown event…
I've tried it all, but didn't get any results.
Also the approach you mentioned, but it doesn't work, or maybe I did something wrong…
My code:
Delphi .....
TADXPDFViewerDocumentHitTest = class(TdxPDFViewerDocumentHitTest)
strict private
FPosition: TdxPDFPosition;
public
property Position: TdxPDFPosition read FPosition;
end;
......
procedure TfrmMain.dxPDFViewer1MouseDown(Sender: TObject;
Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
var iPage : Integer;
sX,sY : Single;
begin
iPage := TADXPDFViewerDocumentHitTest(dxPDFViewer1.HitTest).Position.PageIndex;
sX := TADXPDFViewerDocumentHitTest(dxPDFViewer1.HitTest).Position.Point.X;
sY := TADXPDFViewerDocumentHitTest(dxPDFViewer1.HitTest).Position.Point.Y;
end;
Can you please make a small sample, that shows the right approach?
Hello Mlojk,
Would you please elaborate on what you mean by saying "on the PDF page". The TADXPDFViewerDocumentHitTest(dxPDFViewer1.HitTest).Position property contains coordinates of a point in a document model, but not on the PDF viewer's page.
In addition please describe your task in greater detail. Perhaps, we will be able to offer an alternative solution. Sharing a couple of screenshots demonstrating actual and expected results would be much appreciated.
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Hello Matthias,
Would you please provide us with a screenshot of the PDFViewer and mark there what coordinates you wish to obtain?
Hello Mikhail,
I need to paint markers on a PDFViewer canvas that sticks to a certain position in the PDF file. Therefore, the coordinates used for drawing depends on the current zoom level, rotation and displayed section of the PDF file. Is there a way to obtain information on what part of the PDF file is displayed currently?
Thanks.