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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/*
* Bespin style for Qt4
* Copyright 2007-2012 by Thomas Lübking <thomas.luebking@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
*
* 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.
*/
#include <QTimerEvent>
#include <QWidget>
#define ANIMATOR_IMPL 1
#include "hoverindex.h"
using namespace Animator;
int
IndexInfo::step(long int index) const
{
Fades::const_iterator i;
for (int dir = 0; dir < 2; ++dir)
{
for (i = fades[dir].begin(); i != fades[dir].end(); ++i)
if (i.key() == index)
return i.value();
}
return 0;
}
INSTANCE(HoverIndex)
SET_FPS(HoverIndex)
SET_DURATION(HoverIndex)
#undef ANIMATOR_IMPL
HoverIndex::HoverIndex() : QObject(),
timeStep(_timeStep), count(0), maxSteps(_duration/_timeStep) {}
void
HoverIndex::_setFPS(uint fps)
{
maxSteps = (1000 * maxSteps) / (timeStep * fps);
timeStep = 1000/fps;
if (timer.isActive())
timer.start(timeStep, this);
}
const IndexInfo *
HoverIndex::info(const QWidget *widget, long int idx)
{
if (!widget) return 0;
if (!instance)
instance = new HoverIndex;
return instance->_info(widget, idx);
}
const IndexInfo *
HoverIndex::_info(const QWidget *widget, long int idx) const
{
HoverIndex *that = const_cast<HoverIndex*>(this);
QWidget *w = const_cast<QWidget*>(widget);
Items::iterator it = that->items.find(w);
if (it == items.end())
{ // we have no entry yet
if (idx == 0L)
return 0L;
// ... but we'll need one
it = that->items.insert(w, IndexInfo(0L));
connect(widget, SIGNAL(destroyed(QObject*)), this, SLOT(release(QObject*)));
// if (!timer.isActive())
that->timer.start(timeStep, that);
}
// we now have an entry - check for validity and update in case
IndexInfo &info = it.value();
if (info.index != idx)
{ // sth. changed
info.fades[In][idx] = 1;
if (info.index)
{
int v = maxSteps;
IndexInfo::Fades::iterator old = info.fades[In].find(info.index);
if (old != info.fades[In].end())
{
v = old.value();
info.fades[In].erase(old);
}
info.fades[Out][info.index] = v;
}
info.index = idx;
}
return &info;
}
void
HoverIndex::release(QObject *o)
{
QWidget *w = qobject_cast<QWidget*>(o);
if (!w) return;
items.remove(w);
if (items.isEmpty())
timer.stop();
}
void
HoverIndex::timerEvent(QTimerEvent * event)
{
if (event->timerId() != timer.timerId() || items.isEmpty())
return;
Items::iterator it;
IndexInfo::Fades::iterator step;
it = items.begin();
QWidget *w;
while (it != items.end())
{
if (!it.key())
{
it = items.erase(it);
continue;
}
#if QT_VERSION >= 0x040400
// below does work in general, but is... ugly?!
// another way would be to map to a const widget first or perform a static_cast - ughh
w = const_cast<QWidget*>(it.key().data());
#else
w = const_cast<QWidget*>(&(*it.key()));
#endif
IndexInfo &info = it.value();
if (info.fades[In].isEmpty() && info.fades[Out].isEmpty())
{
++it; continue;
}
step = info.fades[In].begin();
while (step != info.fades[In].end())
{
step.value() += 2;
if ((uint)step.value() > (maxSteps-2))
step = info.fades[In].erase(step);
else
++step;
}
step = info.fades[Out].begin();
while (step != info.fades[Out].end())
{
step.value() -= 2;
if (step.value() < 1)
step = info.fades[Out].erase(step);
else
++step;
}
w->update();
if (info.index == 0L && // nothing actually hovered
info.fades[In].isEmpty() && // no fade ins
info.fades[Out].isEmpty()) // no fade outs
it = items.erase(it); // so remove this item
else
++it;
}
if (items.isEmpty())
timer.stop();
}
|
