/
manometer.cpp
212 lines (169 loc) · 7.05 KB
/
manometer.cpp
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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
/***************************************************************************
* Copyright (C) 2006-2008 by Tomasz Ziobrowski *
* http://www.3electrons.com *
* e-mail: t.ziobrowski@3electrons.com *
* *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <QtGui>
#include <cmath>
#include <assert.h>
#include "manometer.h"
#define PI 3.141592653589793238512808959406186204433
using namespace Qt;
ManoMeter::ManoMeter(QWidget *parent)
: AbstractMeter(parent)
{
m_max=300.0;
m_min=0.0;
m_maximum=300.0; // First we set manualy to call calcMaxMin
setMinimum(0.0);
calcMaxMin(); // Extend max and min to have nice step values
setValue(0.0);
setNominal(80.0);
setCritical(220.0);
setValueOffset(-100.0);
setDigitOffset(105.0);
//setSuffix(QString(" [topMusic]"));
m_digitFont.setPointSize(20);
m_valueFont.setPointSize(25);
// QWidget
setSizePolicy (QSizePolicy::Expanding, QSizePolicy::Expanding);
setWindowTitle(tr("Analog Barmeter"));
resize(311, 311);
assert(m_max-m_min != 0);
}
void ManoMeter::initCoordinateSystem(QPainter & painter)
{
int side = qMin(width(), height());
// painter initialization
painter.setRenderHint(QPainter::Antialiasing);
painter.translate(width() / 2, height() / 2);
painter.scale(side / 335.0, side / 335.0);
}
void ManoMeter::paintBackground(QPainter & painter)
{
static const int scaleTriangle[6] = { -6,141,6,141,0,129 };
initCoordinateSystem(painter);
// Painting Malowanie obwiedni tarczy. Bia³a tarcza z czarn± skal±
QPen Pen(QColor(0,0,0)); Pen.setWidth(4);
painter.setPen(Pen);
QRadialGradient back1(QPointF(0.0,0.0),180.0,QPointF(-35.0,145.0));
back1.setColorAt(0.0,QColor(250,250,250));
back1.setColorAt(1.0,QColor(20,20,20));
QRadialGradient back2(QPointF(0.0,0.0),225.0,QPointF(76.5,135.0));
back2.setColorAt(0.0,QColor(10,10,10));
back2.setColorAt(1.0,QColor(250,250,250));
painter.setBrush(QBrush(back1));
painter.drawEllipse(-162,-162,324,324);
painter.setPen(Qt::NoPen);
painter.setBrush(QBrush(back2));
painter.drawEllipse(-152,-152,304,304);
QRadialGradient shield(QPointF(0,0),182,QPointF(-12.0,-15.0));
shield.setColorAt(0.0,Qt::white);
shield.setColorAt(0.5,QColor(240,240,240));
shield.setColorAt(1.0,QColor(215,215,215));
// internal scale circle
painter.setBrush(QBrush(shield));
painter.setPen(Pen);
painter.drawEllipse(-142,-142,284,284);
painter.setPen(Qt::NoPen);
// nominal
painter.setBrush(QColor(0,200,0));
assert(m_max-m_min != 0);
int angle = static_cast<int>( (3840 * ( m_nominal - m_min ))/(m_max-m_min) );
if (m_min <= m_nominal && m_nominal < m_max )
painter.drawPie(QRect(-141,-141,282,282),-480,3840 - angle % 5760 );
// Critical
painter.setBrush(QBrush(Qt::red));
angle = static_cast<int>( (3840 * ( m_critical - m_min ))/(m_max-m_min) );
if ( m_min <= m_critical && m_critical < m_max )
painter.drawPie(QRect(-141,-141,282,282),-480, 3840 - angle % 5760 ); //-480, 3840*( m_max-m_min - critical()-abs(m_min) )/static_cast<double>(m_max-m_min));
// bia³a obwiednia
painter.setBrush(QBrush(shield));
painter.drawEllipse(-129,-129,258,258);
// Ustawienie siê na pocz±tku skali
painter.rotate(60.0);
// Rysowanie skali kreski
painter.save();
painter.setBrush(QBrush(Qt::black));
int line_length=10;
for (int i=0;i<33;i++)
{
painter.setPen(Pen);
if (i % 4) painter.drawLine(0,140,0,140-line_length);
else {
painter.setPen(Qt::NoPen);
painter.drawConvexPolygon(QPolygon(3, scaleTriangle));
}
painter.rotate(7.5);
Pen.setWidth(3);
if (i % 2) line_length=10;
else line_length=5;
}
painter.restore();
// Rysowanie skali liczby .
if (true || digitOffset())
{
painter.setPen(Qt::black);
painter.rotate(-60.0);
painter.setFont(digitFont());
for (int i=0;i<9;i++)
{
double v = m_min + i*(m_max - m_min)/8.0;
if (fabs(v) < 0.000001 ) v = 0.0;
QString val = QString("%1").arg(v);
QSize Size = painter.fontMetrics().size(Qt::TextSingleLine, val);
painter.save();
painter.translate( digitOffset() * cos((5+i)*PI/6.0), digitOffset() * sin((5+i)*PI/6.0));
painter.drawText( QPointF( Size.width()/ -2.0, Size.height() / 4.0), val);
painter.restore();
}
}
}// paintBackground
void ManoMeter::paintEvent(QPaintEvent * )
{
drawBackground();
QPainter painter(this);
initCoordinateSystem(painter);
// --------------------------------------------- ///
static const int hand[12] = {-4, 0, -1, 129, 1, 129, 4, 0, 8,-50, -8,-50};
QPainterPath hand_path;
hand_path.moveTo(QPointF(hand[0],hand[1]));
for (int i=2;i<10;i+=2)
hand_path.lineTo(hand[i],hand[i+1]);
hand_path.cubicTo ( 8.1,-51.0, 5.0,-48.0, 0.0,-48.0);
hand_path.cubicTo( -5.0,-48.0, -8.1,-51.0, -8.0,-50.0);
// Rysowanie wskazówki
painter.save();
painter.rotate(60.0);
painter.setPen(Qt::NoPen);
painter.setBrush(QBrush(Qt::black));
painter.rotate( (( value()-m_min) * 240.0) / static_cast<double> (m_max - m_min) );
painter.drawPath(hand_path);
painter.drawEllipse(-10,-10,20,20);
painter.restore();// Przywrocenie do wychylenia o 60 stopni
// Rysowanie wy¶wietlanej warto¶ci
if (valueOffset())
{
if (value() >= critical() ) painter.setPen(Qt::red);
painter.setFont(valueFont());
QString Str = prefix() + QString("%1").arg(value()) + suffix();
QSize Size = painter.fontMetrics().size(Qt::TextSingleLine, Str);
painter.drawText( QPointF( Size.width() / -2.0,static_cast<int>( 0 - valueOffset())) , Str);
}
}// paintEvent