Сonversion of coordinates

petiva
Topic Author
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New Member

10 years 1 month ago #10301 by petiva

Сonversion of coordinates was created by petiva

Hi.
I am implementing a custom selection of text.
I added subView in PDFView, so the user can control the selection.
First, I got the index of the character nearest to the coordinate subView. (from method

Code:

-(int)objsGetCharIndex:(float)x :(float)y;

)
Then I received PDF_RECT coordinate (from method

Code:

objsCharRect:(int)index :(PDF_RECT *)rect;

)
I wanna convert this into PDFView coordinate for UIScrollView. How can I achieve this?

emanuele
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10 years 1 month ago - 10 years 1 month ago #10312 by emanuele

Replied by emanuele on topic Сonversion of coordinates

Hi,

to get coordinates from a PDF_RECT you should get rect.left and rect.top as x and y, then apply the current scale with something like:

viewX = rect.left / m_scale;
viewY = rect.top / m_scale;

Last edit: 10 years 1 month ago by emanuele.

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