D21490: Draw line caption for non-PDF documents

[Tobias Deiminger]

tobiasdeiminger created this revision.
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REVISION SUMMARY
  Line captions are already implemented in poppler / PDF generator (can't be enabled in okular UI yet, but that's another story).
  
  This adds the drawing code for non-PDF documents.
  
  TODO:
  
  - obey inline / top setting
  - precombine transformation matrix
  - if inline, partially spare out main segment
  - figure out which font size and color to use
  - adjust placement under some conditions (e.g. avoid upside down text)?
  
  Depends on D21248 <https://phabricator.kde.org/D21248>

REPOSITORY
  R223 Okular

BRANCH
  feature/linecaption

REVISION DETAIL
  https://phabricator.kde.org/D21490

AFFECTED FILES
  ui/pagepainter.cpp
  ui/pagepainter.h

To: tobiasdeiminger
Cc: okular-devel, joaonetto, tfella, ngraham, darcyshen, aacid
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