1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*/
#ifndef GUI_OBJECT_H
#define GUI_OBJECT_H
namespace GUI {
class CommandReceiver;
class CommandSender;
class CommandReceiver {
friend class CommandSender;
protected:
virtual ~CommandReceiver() {}
virtual void handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {}
};
class CommandSender {
// TODO - allow for multiple targets, i.e. store targets in a list
// and add methods addTarget/removeTarget.
protected:
CommandReceiver *_target;
public:
CommandSender(CommandReceiver *target) : _target(target) {}
virtual ~CommandSender() {}
void setTarget(CommandReceiver *target) { _target = target; }
CommandReceiver *getTarget() const { return _target; }
virtual void sendCommand(uint32 cmd, uint32 data) {
if (_target && cmd)
_target->handleCommand(this, cmd, data);
}
};
class Widget;
class GuiObject : public CommandReceiver {
friend class Widget;
protected:
int16 _x, _y;
uint16 _w, _h;
Common::String _name;
Widget *_firstWidget;
public:
GuiObject(int x, int y, int w, int h) : _x(x), _y(y), _w(w), _h(h), _name(""), _firstWidget(0) { }
GuiObject(const Common::String &name);
~GuiObject();
virtual int16 getAbsX() const { return _x; }
virtual int16 getAbsY() const { return _y; }
virtual int16 getChildX() const { return getAbsX(); }
virtual int16 getChildY() const { return getAbsY(); }
virtual uint16 getWidth() const { return _w; }
virtual uint16 getHeight() const { return _h; }
virtual bool isVisible() const = 0;
virtual void draw() = 0;
virtual void reflowLayout();
protected:
virtual void releaseFocus() = 0;
// Convenience alias for OSystem::getMillis().
// This is a bit hackish, of course :-).
uint32 getMillis();
};
} // End of namespace GUI
#endif
|
