/src/wrappers/gtk/library/drag_motion_callback.e

http://github.com/tybor/Liberty · Specman e · 81 lines · 65 code · 16 blank · 0 comment · 3 complexity · 92821bd06e90a6d70d1b40c71e4c89ac MD5 · raw file

  1. indexing
  2. description: "Generic callback for the drag-motion signal"
  3. copyright: "[
  4. Copyright (C) 2006 Paolo redaelli, eiffel-libraries team, GTK+ team and others
  5. This library is free software; you can redistribute it and/or
  6. modify it under the terms of the GNU Lesser General Public License
  7. as published by the Free Software Foundation; either version 2.1 of
  8. the License, or (at your option) any later version.
  9. This library is distributed in the hope that it will be useful, but
  10. WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. Lesser General Public License for more details.
  13. You should have received a copy of the GNU Lesser General Public
  14. License along with this library; if not, write to the Free Software
  15. Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  16. 02110-1301 USA
  17. ]"
  18. license: "LGPL v2 or later"
  19. date: "$Date:$"
  20. revision "$Revision:$"
  21. class DRAG_MOTION_CALLBACK
  22. inherit CALLBACK redefine object end
  23. insert G_OBJECT_FACTORY [GTK_WIDGET]
  24. creation make
  25. feature
  26. object: GTK_WIDGET
  27. feature
  28. callback (drag_context_ptr: POINTER; x, y, time: INTEGER; instance: POINTER): INTEGER is
  29. local drag_context: GDK_DRAG_CONTEXT
  30. do
  31. debug print ("Callback: instance=") print (instance.to_string) print ("%N") end
  32. check
  33. instance.is_not_null
  34. drag_context_ptr.is_not_null
  35. end
  36. object := wrapper(instance)
  37. create drag_context.secondary_wrapper_from (drag_context_ptr)
  38. Result := function.item ([drag_context, x, y, time, object]).to_integer
  39. end
  40. callback_pointer: POINTER is
  41. do
  42. Result := get_callback_pointer ($callback)
  43. ensure
  44. Result.is_not_null
  45. end
  46. connect (an_object: GTK_WIDGET; a_function: FUNCTION [ANY, TUPLE [GDK_DRAG_CONTEXT, INTEGER, INTEGER,
  47. INTEGER, GTK_WIDGET], BOOLEAN]) is
  48. do
  49. debug
  50. print ("DRAG_MOTION_CALLBACK.connect (an_object=") print (an_object.to_pointer.to_string)
  51. print (" an_object.handle=") print (an_object.handle.to_string)
  52. print (") Current=") print (to_pointer.to_string)
  53. print (" Current.handle=") print (handle.to_string)
  54. print ("%N")
  55. end
  56. handler_id := g_signal_connect_closure (an_object.handle,
  57. signal_name.to_external,
  58. handle,
  59. 0 -- i.e. call it before default handler
  60. )
  61. function:=a_function
  62. end
  63. signal_name: STRING is "drag-motion"
  64. function: FUNCTION [ANY, TUPLE [GDK_DRAG_CONTEXT, INTEGER, INTEGER, INTEGER, GTK_WIDGET], BOOLEAN]
  65. end