D7962: Implement several new print scaling options

[Nathaniel Graham]

ngraham added a comment.


  In D7962#346063 <https://phabricator.kde.org/D7962#346063>, @sander wrote:
  
  > This is accurate.
  
  
  Great, that's what I thought. In this case, we can actually remove one of the comboboxes entirely, winding up with a substantially clearer and better user interface:
  
    Scaling:  () None; print original size
              () Fit to full page
              () Fit to printable area
  
  Why? Well, there is actually no need to expose FitToPage and ShrinkToPage in the UI at all; we can simply always use FitToPage functionality. Consider the following use cases:
  
  - Document is is larger than printable area or full page and has no built-in margins: choose Fit to printable area
  - Document is is larger than printable area or full page and has built-in margins that you know are larger than the printer's own margins: choose Fit to full page
  - Document is smaller than printable area or full page and you don't want it to be scaled at all: choose None; print original size
  - Document is smaller than printable area or full page and has no built-in margins and you want to scale it up as big as possible: choose Fit to printable area
  - Document is smaller than printable area or full page and has built-in margins and you want to scale it up as big as possible: choose Fit to full page
  
  In no case does anyone actually want to use `ShrinkToPage`; if you don't want your document to be scaled up at all, you simply choose the None; print original size option.

REPOSITORY
  R223 Okular

REVISION DETAIL
  https://phabricator.kde.org/D7962

To: sander, #okular, aacid, #vdg, ngraham
Cc: bruns, okular-devel, cfeck, rkflx, michaelweghorn, ngraham, aacid
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