+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Support services for Gamnit on GNU/Linux
+module gamnit_linux
+
+intrude import gamnit
+import display_linux
+
+redef class App
+ redef fun feed_events
+ do
+ var display = display
+ if display == null then return
+
+ var events = display.sdl_display.events
+ display.check_lock_cursor
+ for event in events do accept_event(event)
+ end
+end
+
+redef class GamnitDisplay
+
+ # HACK to keep the cursor in the center of the screen without producing move events
+ private fun check_lock_cursor
+ do
+ var sdl_display = sdl_display
+ if lock_cursor and sdl_display.input_focus then
+ sdl_display.ignore_mouse_motion_events = true
+ sdl_display.warp_mouse(width/2, height/2)
+ sdl_display.ignore_mouse_motion_events = false
+ end
+ end
+end