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
|
#ifndef BusyWidget_h
#define BusyWidget_h
/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This 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 software 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, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/
#include "Counter.h"
#include <QBasicTimer>
#include <QTimerEvent>
#include <QPropertyAnimation>
#include <QWidget>
#include <QPaintEvent>
#include <QPainterPath>
class BusyWidget: public QWidget, private Base::Counter<BusyWidget>
{
Q_OBJECT
Q_PROPERTY( qreal angle READ angle WRITE setAngle )
Q_PROPERTY( qreal opacity READ opacity WRITE setOpacity )
public:
//* position
enum class Location
{
Center,
TopLeft,
TopRight,
BottomLeft,
BottomRight
};
//* constructor
explicit BusyWidget( QWidget* = nullptr, Location = Location::Center );
//*@name accessors
//@{
//* angle
qreal angle() const
{ return angle_; }
//* opacity
int opacity() const
{ return opacity_; }
//* size
QSize minimumSizeHint() const override
{ return QSize( 2*radius_+border_, 2*radius_+border_ ); }
//* size
QSize sizeHint() const override
{ return minimumSizeHint(); }
//@}
//*@name modifiers
//@{
//* delay
void setDelay( int value )
{ delay_ = value; }
//* angle
void setAngle( qreal value )
{
if( angle_ == value ) return;
angle_ = value;
update();
}
//* opacity
void setOpacity( int );
//@}
//* event filter
bool eventFilter( QObject*, QEvent* ) override;
public Q_SLOTS:
//* start
void start();
//* stop
void stop();
protected:
//* paint event
void paintEvent( QPaintEvent* ) override;
//* timer event
void timerEvent( QTimerEvent* ) override;
//* adjust position based on parent
void _adjustPosition();
private:
//* animation
QPropertyAnimation* animation_ = nullptr;
//* basic time
QBasicTimer timer_;
//* painter path
QPainterPath path_;
//* location
Location location_ = Location::Center;
//* delay
int delay_ = 200;
//* radius
int radius_ = 18;
//* thickness
int thickness_ = 5;
//* border
int border_ = 2;
//* margin
int margin_ = 10;
//* angle
qreal angle_ = 0;
//* opacity
int opacity_ = 0;
};
#endif
|
