tdf#157816 sw: PDF export: filter out links on empty space, INetAttrs

Several problems here:
* As with fields, there may be selection rectangles with no text
* SwRootFrame::CalcFrameRects() adds flys that are anchored in the
selection to the selection
* A fly text portion causes Link annotations to split, but not Link SE
* If a fly only partially overlaps a line vertically, then
CalcFrameRects() produces a full-width half-height rectangle and
another 2 half-width half-height rectangles on both sides.
This is useless, the rectangles must be full line height.
Add some code in CalcFrameRects() to use the fly portions in the
SwParaPortion instead of the fly frame areas.

Change-Id: I93f0c12a5e5a3d5f51fcc4b33052a112e9174863
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/158576
Tested-by: Michael Stahl <michael.stahl@allotropia.de>
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>

0 files changed, 0 insertions, 0 deletions