D20802: Add a layer for showing the removed tiles of the game.

krippendorf created this revision.
Herald added a reviewer: KDE Games.
Herald added a subscriber: kde-games-devel.
krippendorf requested review of this revision.

REVISION SUMMARY
  This patch adds an extra layer showing the removed tiles of a kmahjongg game. It only shows a fitting number of last removed tiles.
  
  The feature can be en/disabled in the general settings dialog. The undo operation works for removing tiles.
  
  The style is plain without 3D functionality, to keep the focus on the main board layout.

TEST PLAN
  Just give it a try.

REPOSITORY
  R403 KMahjongg

REVISION DETAIL
  https://phabricator.kde.org/D20802

AFFECTED FILES
  .gitignore
  src/CMakeLists.txt
  src/gamebackground.cpp
  src/gamebackground.h
  src/gameitem.cpp
  src/gameremovedtiles.cpp
  src/gameremovedtiles.h
  src/gamescene.cpp
  src/gamescene.h
  src/gameview.cpp
  src/gameview.h
  src/kmahjongg.cpp
  src/kmahjongg.kcfg
  src/settings.ui

To: krippendorf, #kde_games
Cc: kde-games-devel, krippendorf