desktop entry: do not hardcode the icon path

To conform to the freedesktop standard, we should not hardcode the
icon path, nor provide its file extension.

Change-Id: If7f27e3dff46161904536cac47003359ed303fb5
Tuleap: #517

CMakeLists.txt

@@ -379,30 +379,18 @@ CONFIGURE_FILE (
    "${PROJECT_BINARY_DIR}/config.h"
 )
 
-# generate .desktop file
-CONFIGURE_FILE (
-   "${PROJECT_SOURCE_DIR}/gnome-ring.desktop.in"
-   "${PROJECT_BINARY_DIR}/gnome-ring.desktop"
-)
-
-# generate .desktop file for autostart
-CONFIGURE_FILE (
-   "${PROJECT_SOURCE_DIR}/gnome-ring.desktop.autostart.in"
-   "${PROJECT_BINARY_DIR}/gnome-ring.desktop.autostart"
-)
-
 INSTALL(TARGETS gnome-ring
    RUNTIME DESTINATION bin
 )
 
 # install .desktop in XDG desktop dir so that it is recognized by the system
-INSTALL(FILES ${PROJECT_BINARY_DIR}/gnome-ring.desktop
+INSTALL(FILES ${PROJECT_SOURCE_DIR}/gnome-ring.desktop
     DESTINATION ${CMAKE_INSTALL_PREFIX}/share/applications
 )
 
 # install .desktop in the gnome-ring data dir, so that it can be copied to the
 # autostart dir by the client
-INSTALL(FILES ${PROJECT_BINARY_DIR}/gnome-ring.desktop.autostart
+INSTALL(FILES ${PROJECT_SOURCE_DIR}/gnome-ring.desktop.autostart
    DESTINATION
       ${CMAKE_INSTALL_PREFIX}/share/gnome-ring/
    PERMISSIONS

gnome-ring.desktop.in → gnome-ring.desktop

@@ -2,7 +2,7 @@
 Name=Ring
 Comment=Ring is a secured and distributed communication software.
 Exec=gnome-ring
-Icon=@RING_INSTALL_PREFIX@/share/icons/hicolor/scalable/apps/ring.svg
+Icon=ring
 StartupNotify=true
 Terminal=false
 Type=Application

gnome-ring.desktop.autostart.in → gnome-ring.desktop.autostart

@@ -2,7 +2,7 @@
 Name=Ring
 Comment=Ring is a secured and distributed communication software.
 Exec=gnome-ring --restore-last-window-state
-Icon=@RING_INSTALL_PREFIX@/share/icons/hicolor/scalable/apps/ring.svg
+Icon=ring
 StartupNotify=true
 Terminal=false
 Type=Application