/src/wrappers/gtk/library/size_allocate_callback.e
Specman e | 80 lines | 61 code | 16 blank | 3 comment | 3 complexity | dba65eb24e7ec47c353ae612eba54bbd MD5 | raw file
1indexing 2 description: "Generic callback for the size-allocate signal" 3 copyright: "[ 4 Copyright (C) 2006 Paolo redaelli, eiffel-libraries team, GTK+ team and others 5 6 This library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public License 8 as published by the Free Software Foundation; either version 2.1 of 9 the License, or (at your option) any later version. 10 11 This library is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with this library; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA 20 ]" 21 license: "LGPL v2 or later" 22 date: "$Date:$" 23 revision "$Revision:$" 24 25class SIZE_ALLOCATE_CALLBACK 26 27inherit CALLBACK redefine object end 28 29insert G_OBJECT_FACTORY [GTK_WIDGET] 30 31creation make 32 33feature 34 object: GTK_WIDGET 35 36feature 37 38 callback (allocation: POINTER; instance: POINTER) is 39 local 40 allocation_obj: GTK_ALLOCATION 41 do 42 debug print ("Callback: instance=") print (instance.to_string) print ("%N") end 43 -- The following is written with the implicit requirement 44 -- that the button is actually created bu the Eiffel 45 -- application. 46 object := wrapper(instance) 47 create allocation_obj.copy_from_pointer (allocation) 48 49 procedure.call ([allocation_obj, object]) 50 end 51 52 callback_pointer: POINTER is 53 do 54 Result := get_callback_pointer ($callback) 55 ensure 56 Result.is_not_null 57 end 58 59 connect (an_object: GTK_WIDGET; a_procedure: PROCEDURE [ANY, TUPLE[GTK_ALLOCATION, GTK_WIDGET]]) is 60 do 61 debug 62 print ("SIZE_ALLOCATE_CALLBACK.connect (an_object=") print (an_object.to_pointer.to_string) 63 print (" an_object.handle=") print (an_object.handle.to_string) 64 print (") Current=") print (to_pointer.to_string) 65 print (" Current.handle=") print (handle.to_string) 66 print ("%N") 67 end 68 69 handler_id := g_signal_connect_closure (an_object.handle, 70 signal_name.to_external, 71 handle, 72 0 -- i.e. call it before default handler 73 ) 74 procedure:=a_procedure 75 end 76 77 signal_name: STRING is "size-allocate" 78 79 procedure: PROCEDURE [ANY, TUPLE[GTK_ALLOCATION, GTK_WIDGET]] 80end