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
|
package AnalogClock;
use Qt;
use Qt::isa qw(Qt::Widget);
use Qt::slots
setTime => ['const QTime&'],
drawClock => ['QPainter*'],
timeout => [];
use Qt::attributes qw(
clickPos
_time
);
#
# Constructs an analog clock widget that uses an internal QTimer
#
sub NEW {
shift->SUPER::NEW(@_);
_time = Qt::Time::currentTime(); # get current time
my $internalTimer = Qt::Timer(this); # create internal timer
this->connect($internalTimer, SIGNAL('timeout()'), SLOT('timeout()'));
$internalTimer->start(5000); # emit signal every 5 seconds
}
sub mousePressEvent {
my $e = shift;
if(isTopLevel()) {
# Lack of operators is really noticable here
my $topLeft = Qt::Point(
geometry()->topLeft->x - frameGeometry()->topLeft->x,
geometry()->topLeft->y - frameGeometry()->topLeft->y
);
clickPos = Qt::Point($e->pos->x + $topLeft->x,
$e->pos->y + $topLeft->y);
}
}
sub mouseMoveEvent {
my $e = shift;
if(isTopLevel()) {
move(Qt::Point($e->globalPos->x - clickPos->x,
$e->globalPos->y - clickPos->y));
}
}
sub setTime {
my $t = shift;
timeout();
}
#
# The QTimer::timeout() signal is received by this slot.
#
sub timeout {
my $new_time = Qt::Time::currentTime(); # get the current time
_time = _time->addSecs(5);
if($new_time->minute != _time->minute) { # minute has changed
if(autoMask()) {
updateMask();
} else {
update();
}
}
}
sub paintEvent {
return if autoMask();
my $paint = Qt::Painter(this);
$paint->setBrush(colorGroup()->foreground);
drawClock($paint);
}
# If clock is transparent, we use updateMask()
# instead of paintEvent()
sub updateMask { # paint clock mask
my $bm = Qt::Bitmap(size());
$bm->fill(&color0); # transparent
my $paint = Qt::Painter;
$paint->begin($bm, this);
$paint->setBrush(&color1); # use non-transparent color
$paint->setPen(&color1);
drawClock($paint);
$paint->end;
setMask($bm);
}
#
# The clock is painted using a 1000x1000 square coordinate system, in
# the centered square, as big as possible. The painter's pen and
# brush colors are used.
#
sub drawClock {
my $paint = shift;
$paint->save;
$paint->setWindow(-500,-500, 1000,1000);
my $v = $paint->viewport;
my $d = min($v->width, $v->height);
$paint->setViewport($v->left + ($v->width-$d)/2,
$v->top - ($v->height-$d)/2, $d, $d);
# _time = Qt::Time::currentTime();
my $pts = Qt::PointArray();
$paint->save;
$paint->rotate(30*(_time->hour%12-3) + _time->minute/2);
$pts->setPoints([-20,0, 0,-20, 300,0, 0,20]);
$paint->drawConvexPolygon($pts);
$paint->restore;
$paint->save;
$paint->rotate((_time->minute-15)*6);
$pts->setPoints([-10,0, 0,-10, 400,0, 0,10]);
$paint->drawConvexPolygon($pts);
$paint->restore;
for(1 .. 12) {
$paint->drawLine(440,0, 460,0);
$paint->rotate(30);
}
$paint->restore;
}
sub setAutoMask {
my $b = shift;
setBackgroundMode($b ? &PaletteForeground : &PaletteBackground);
Qt::Widget::setAutoMask($b);
}
1;
|
