Thread: PDF Zoom
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Old 11-11-2010, 11:18 AM   #25
Kindle3w_Pdfs
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Hi, I'd like to add to the pdf zoom enhancement requests that Kindlematic and Hrant posted here on 8-1-2010. I'm not sure where the best place to post them is, so I'm posting them here.

- A 2-stage crop: The optional first stage would allow the user to manually set crop borders that would be (saved and) restored each time the user reads that particular pdf file, to allow the user to crop away wasteful repetitive items such as headers and footers. The second stage would automatically crop away whatever white space bounds whatever remains after the first stage.

- Smarter automatic cropping that recognizes when the reader is in a zoom mode that is displaying part or all of the top, middle or bottom section of a page. (Typically in landscape mode.) Automatic cropping of white space should be handled on a per-section basis, rather than a per-page basis, to allow some sections to fit entirely within the screen width even when another section on that page has content that is wider. Wider sections would still require the user to pan right or left to see all of them, but narrower sections that fit if smartly cropped would no longer require panning. As a result, fewer paragraphs would be split into a left portion and a right portion, so the user would no longer need to pan right and left for each line of each paragraph. (For examples of books that would benefit considerably, look at the Head First series published by O'Reilly.)

- Smarter automatic cropping that would recognize and optionally crop away patterns that repeat on most pages of the book (i.e., wasteful headers and/or footers). For efficiency, the software could save the crop parameters on a per pdf file basis, and restore them each time that particular pdf file is opened. Also, the software could calculate the crop parameters using a lower priority background process so as not to slow down the user's reading experience. (If this feature is implemented, then the 2-stage crop feature described above would not be needed.)

Thanks for considering these.
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