lib/gtk/v3_4/gdk.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 # Services from GDK
  16 module gdk is pkgconfig "gtk+-3.0"
  17
  18 import gtk_core
  19
  20 `{
  21 #ifdef Task_gdk_main
  22         // Callback to Task::gdk_main
  23         gboolean nit_gdk_callback_task(gpointer user_data) {
  24                 Task_decr_ref(user_data);
  25                 return Task_gdk_main(user_data);
  26         }
  27 #endif
  28 `}
  29
  30 redef class Task
  31
  32         # Small unit of code executed by the GDK loop when idle
  33         #
  34         # Returns `true` if this object should be invoked again.
  35         fun gdk_main: Bool
  36         do
  37                 main
  38                 return false
  39         end
  40 end
  41
  42 # Add a callback to execute whenever there are no higher priority events pending
  43 fun gdk_threads_add_idle(task: Task): Int import Task.gdk_main `{
  44         Task_incr_ref(task);
  45         return gdk_threads_add_idle(&nit_gdk_callback_task, task);
  46 `}