D6072: Fix rendering of polylines and polyrings after tileLevel refactoring

[Thomas fake Jakobi]

tjakobi created this revision.
tjakobi added a project: Marble.

REVISION SUMMARY
  The textureLayer's tileLevelChanged signal was never forwarded to the geometryLayer, which made placemarks and text show up, but no areas or lines.
  
  I tracked this down to the refactoring regarding the tileLevel from december 3rd in commit https://phabricator.kde.org/R34:f847505b02940aff9e37a6fa2317a7098c078d97.

TEST PLAN
  environment: linux64, qt 5.8 or 5.9 (both tested)
  
  i just opened "germany.kml" using marble-qt from the examples/kml folder, without the fix only the pin shows up, with the fix, the area below is highlighted in red a yellow outline.

REPOSITORY
  R34 Marble

REVISION DETAIL
  https://phabricator.kde.org/D6072

AFFECTED FILES
  src/lib/marble/MarbleMap.cpp

To: tjakobi, #marble
Cc: #marble, tjakobi, mnafees, shentey, chaz6, dkolozsvari, cmihalache, rahn, nienhueser, marble-devel
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