1 /*
2 * this file is part of the oxygen gtk engine
3 * Copyright (c) 2010 Hugo Pereira Da Costa <hugo.pereira@free.fr>
4 *
5 * This  library is free  software; you can  redistribute it and/or
6 * modify it  under  the terms  of the  GNU Lesser  General  Public
7 * License  as published  by the Free  Software  Foundation; either
8 * version 2 of the License, or(at your option ) any later version.
9 *
10 * This library is distributed  in the hope that it will be useful,
11 * but  WITHOUT ANY WARRANTY; without even  the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License  along  with  this library;  if not,  write to  the Free
17 * Software Foundation, Inc., 51  Franklin St, Fifth Floor, Boston,
18 * MA 02110-1301, USA.
19 */
20 
21 #include "oxygenscrollbarstatedata.h"
22 #include "../config.h"
23 
24 #include <iostream>
25 
26 namespace Oxygen
27 {
28 
29     //_____________________________________________
connect(GtkWidget * widget)30     void ScrollBarStateData::connect( GtkWidget* widget )
31     {
32 
33         #if OXYGEN_DEBUG
34         std::cerr << "Oxygen::ScrollBarStateData::connect - " << widget << " (" << G_OBJECT_TYPE_NAME( widget ) << ")" << std::endl;
35         #endif
36 
37         _target = widget;
38         _upArrowData._timeLine.connect( (GSourceFunc)delayedUpdate, this );
39         _downArrowData._timeLine.connect( (GSourceFunc)delayedUpdate, this );
40     }
41 
42     //_____________________________________________
disconnect(GtkWidget * widget)43     void ScrollBarStateData::disconnect( GtkWidget* widget )
44     {
45         #if OXYGEN_DEBUG
46         std::cerr << "Oxygen::ScrollBarStateData::disconnect - " << widget << " (" << G_OBJECT_TYPE_NAME( widget ) << ")" << std::endl;
47         #endif
48 
49         _upArrowData._timeLine.disconnect();
50         _upArrowData._rect = Gtk::gdk_rectangle();
51         _upArrowData._state = false;
52 
53         _downArrowData._timeLine.disconnect();
54         _downArrowData._rect = Gtk::gdk_rectangle();
55         _downArrowData._state = false;
56 
57         _target = 0L;
58 
59     }
60 
61     //_____________________________________________
updateState(bool state)62     bool ScrollBarStateData::Data::updateState( bool state )
63     {
64         if( state == _state ) return false;
65 
66         #if OXYGEN_DEBUG
67         std::cerr
68             << "Oxygen::ScrollBarStateData::Data::updateState - "
69             << " state: " << state
70             << std::endl;
71         #endif
72 
73         _state = state;
74 
75         // change direction
76         _timeLine.setDirection( state ? TimeLine::Forward:TimeLine::Backward );
77 
78         // restart timeLine if needed
79         if( _timeLine.isConnected() && !_timeLine.isRunning() ) _timeLine.start();
80 
81         return true;
82     }
83 
84     //_____________________________________________
delayedUpdate(gpointer pointer)85     gboolean ScrollBarStateData::delayedUpdate( gpointer pointer )
86     {
87 
88         ScrollBarStateData& data( *static_cast<ScrollBarStateData*>( pointer ) );
89 
90         if( data._target )
91         { gtk_widget_queue_draw( data._target ); }
92 
93         return FALSE;
94 
95     }
96 
97 }
98