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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
/*
Minetest-c55
Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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.
*/
#ifndef MODALMENU_HEADER
#define MODALMENU_HEADER
#include "irrlichttypes_extrabloated.h"
class GUIModalMenu;
class IMenuManager
{
public:
// A GUIModalMenu calls these when this class is passed as a parameter
virtual void createdMenu(GUIModalMenu *menu) = 0;
virtual void deletingMenu(GUIModalMenu *menu) = 0;
};
/*
Remember to drop() the menu after creating, so that it can
remove itself when it wants to.
*/
class GUIModalMenu : public gui::IGUIElement
{
public:
GUIModalMenu(gui::IGUIEnvironment* env,
gui::IGUIElement* parent, s32 id,
IMenuManager *menumgr):
IGUIElement(gui::EGUIET_ELEMENT, env, parent, id,
core::rect<s32>(0,0,100,100))
{
//m_force_regenerate_gui = false;
m_menumgr = menumgr;
m_allow_focus_removal = false;
m_screensize_old = v2u32(0,0);
setVisible(true);
Environment->setFocus(this);
m_menumgr->createdMenu(this);
}
virtual ~GUIModalMenu()
{
m_menumgr->deletingMenu(this);
}
void allowFocusRemoval(bool allow)
{
m_allow_focus_removal = allow;
}
bool canTakeFocus(gui::IGUIElement *e)
{
return (e && (e == this || isMyChild(e))) || m_allow_focus_removal;
}
void draw()
{
if(!IsVisible)
return;
video::IVideoDriver* driver = Environment->getVideoDriver();
v2u32 screensize = driver->getScreenSize();
if(screensize != m_screensize_old /*|| m_force_regenerate_gui*/)
{
m_screensize_old = screensize;
regenerateGui(screensize);
//m_force_regenerate_gui = false;
}
drawMenu();
}
/*
This should be called when the menu wants to quit.
WARNING: THIS DEALLOCATES THE MENU FROM MEMORY. Return
immediately if you call this from the menu itself.
*/
void quitMenu()
{
allowFocusRemoval(true);
// This removes Environment's grab on us
Environment->removeFocus(this);
this->remove();
}
void removeChildren()
{
const core::list<gui::IGUIElement*> &children = getChildren();
core::list<gui::IGUIElement*> children_copy;
for(core::list<gui::IGUIElement*>::ConstIterator
i = children.begin(); i != children.end(); i++)
{
children_copy.push_back(*i);
}
for(core::list<gui::IGUIElement*>::Iterator
i = children_copy.begin();
i != children_copy.end(); i++)
{
(*i)->remove();
}
}
virtual void regenerateGui(v2u32 screensize) = 0;
virtual void drawMenu() = 0;
virtual bool OnEvent(const SEvent& event) { return false; };
protected:
//bool m_force_regenerate_gui;
v2u32 m_screensize_old;
private:
IMenuManager *m_menumgr;
// This might be necessary to expose to the implementation if it
// wants to launch other menus
bool m_allow_focus_removal;
};
#endif
|
