getUppermostVisibleCanvasOffset does not account for pdf rotation

[PabloK]

Hi I have been having trouble with getPdfPosition, It returns null on several occasions although the entire pdf is in view. This might be because the pdf is rotated to the side. I have tried tracing the error back and it seems getUppermostVisibleCanvasOffset does not account for rotation and thus returns null for situations where some content actually is visible.

[jviereck]

@PabloK, thanks for reporting this! Can you share a link or the document with me that fails for you? Then I am more than happy to take a look at what is going wrong.

[PabloK]

Hey thanks for a quick response. I think it actually works for rotated pdfs the problem is rather a different one I have located two things that are strange I left comments in those commits so you should see it. I can fork and do the changes in my fork. But I would need a confirmation that I dint break something some how.

[jviereck]

@PabloK do you have a working example such that I can play with the changes you have proposed in #10? Otherwise it's hard for me to judge what is the right thing todo in the situations.