Add .desktop file and generate placeholder icon.

CMakeLists.txt

@@ -53,6 +53,7 @@ doxygen_configure(cpp/ py/)
 
 add_subdirectory(cpp/)
 add_subdirectory(py/)
+add_subdirectory(assets/)
 
 # process the included python sources, generate setup.py
 process_python_modules()

assets/CMakeLists.txt

@@ -0,0 +1,13 @@
+message("Cropping gaben.png to create placeholder desktop icon...")
+
+file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/dist)
+execute_process(COMMAND python3 -c "
+import PIL.Image;
+cropped=PIL.Image.open('${GLOBAL_ASSET_DIR}/gaben.png').crop((92,137,604,649));
+cropped.save('${CMAKE_BINARY_DIR}/dist/openage.png')")
+
+install(FILES ${GLOBAL_ASSET_DIR}/dist/openage.desktop
+        DESTINATION ${CMAKE_INSTALL_PREFIX}/usr/share/applications)
+
+install(FILES ${CMAKE_BINARY_DIR}/dist/openage.png
+        DESTINATION ${CMAKE_INSTALL_PREFIX}/usr/share/pixmaps)

dist/README.md

@@ -0,0 +1,15 @@
+# Distribution
+
+Contains files for useful for package distribution.
+
+## Desktop file
+
+The [openage.desktop](openage.desktop) file can be found in this directory and will be installed at
+`/usr/share/applications/openage.desktop`.
+
+## Desktop icon
+
+In lieu of a logo/icon for openage a cropped version of [assets/gaben.png](assets/gaben.png) is
+created instead. See [assets/CMakeLists.txt](assets/CMakeLists.txt) for details on how the icon
+is generated. The final icon will be installed at `/usr/share/pixmaps/openage.png` via
+`make install`.

dist/openage.desktop

@@ -0,0 +1,8 @@
+[Desktop Entry]
+Name=openage
+Comment=Free engine clone of Age of Empires II
+Exec=openage --data="~/.openage/assets" %u
+Terminal=false
+Type=Application
+Icon=openage
+Categories=Game;StrategyGame;