comparison: src/analog/manometer.cpp
src/analog/manometer.cpp
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| 1 /*************************************************************************** | |
| 2 * Copyright (C) 2006-2008 by Tomasz Ziobrowski * | |
| 3 * http://www.3electrons.com * | |
| 4 * e-mail: t.ziobrowski@3electrons.com * | |
| 5 * * | |
| 6 * * | |
| 7 * This program is free software; you can redistribute it and/or modify * | |
| 8 * it under the terms of the GNU General Public License as published by * | |
| 9 * the Free Software Foundation; either version 2 of the License, or * | |
| 10 * (at your option) any later version. * | |
| 11 * * | |
| 12 * This program is distributed in the hope that it will be useful, * | |
| 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
| 15 * GNU General Public License for more details. * | |
| 16 * * | |
| 17 * You should have received a copy of the GNU General Public License * | |
| 18 * along with this program; if not, write to the * | |
| 19 * Free Software Foundation, Inc., * | |
| 20 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * | |
| 21 ***************************************************************************/ | |
| 22 | |
| 23 #include <QtGui> | |
| 24 #include <cmath> | |
| 25 #include <assert.h> | |
| 26 | |
| 27 #include "manometer.h" | |
| 28 #define PI 3.141592653589793238512808959406186204433 | |
| 29 | |
| 30 using namespace Qt; | |
| 31 ManoMeter::ManoMeter(QWidget *parent) | |
| 32 : AbstractMeter(parent) | |
| 33 { | |
| 34 m_max=300.0; | |
| 35 m_min=0.0; | |
| 36 | |
| 37 m_maximum=300.0; // First we set manualy to call calcMaxMin | |
| 38 setMinimum(0.0); | |
| 39 calcMaxMin(); // Extend max and min to have nice step values | |
| 40 | |
| 41 setValue(0.0); | |
| 42 setNominal(80.0); | |
| 43 setCritical(220.0); | |
| 44 setValueOffset(-100.0); | |
| 45 setDigitOffset(105.0); | |
| 46 setSuffix(QString(" [bar]")); | |
| 47 m_digitFont.setPointSize(20); | |
| 48 m_valueFont.setPointSize(25); | |
| 49 | |
| 50 // QWidget | |
| 51 setSizePolicy (QSizePolicy::Expanding, QSizePolicy::Expanding); | |
| 52 setWindowTitle(tr("Analog Barmeter")); | |
| 53 resize(311, 311); | |
| 54 assert(m_max-m_min != 0); | |
| 55 } | |
| 56 | |
| 57 | |
| 58 | |
| 59 void ManoMeter::initCoordinateSystem(QPainter & painter) | |
| 60 { | |
| 61 int side = qMin(width(), height()); | |
| 62 // painter initialization | |
| 63 painter.setRenderHint(QPainter::Antialiasing); | |
| 64 painter.translate(width() / 2, height() / 2); | |
| 65 painter.scale(side / 335.0, side / 335.0); | |
| 66 } | |
| 67 | |
| 68 void ManoMeter::paintBackground(QPainter & painter) | |
| 69 { | |
| 70 static const int scaleTriangle[6] = { -6,141,6,141,0,129 }; | |
| 71 initCoordinateSystem(painter); | |
| 72 | |
| 73 // Painting Malowanie obwiedni tarczy. Biała tarcza z czarną skalą | |
| 74 QPen Pen(QColor(0,0,0)); Pen.setWidth(4); | |
| 75 painter.setPen(Pen); | |
| 76 | |
| 77 QRadialGradient back1(QPointF(0.0,0.0),180.0,QPointF(-35.0,145.0)); | |
| 78 back1.setColorAt(0.0,QColor(250,250,250)); | |
| 79 back1.setColorAt(1.0,QColor(20,20,20)); | |
| 80 | |
| 81 QRadialGradient back2(QPointF(0.0,0.0),225.0,QPointF(76.5,135.0)); | |
| 82 back2.setColorAt(0.0,QColor(10,10,10)); | |
| 83 back2.setColorAt(1.0,QColor(250,250,250)); | |
| 84 | |
| 85 painter.setBrush(QBrush(back1)); | |
| 86 painter.drawEllipse(-162,-162,324,324); | |
| 87 painter.setPen(Qt::NoPen); | |
| 88 painter.setBrush(QBrush(back2)); | |
| 89 painter.drawEllipse(-152,-152,304,304); | |
| 90 | |
| 91 QRadialGradient shield(QPointF(0,0),182,QPointF(-12.0,-15.0)); | |
| 92 shield.setColorAt(0.0,Qt::white); | |
| 93 shield.setColorAt(0.5,QColor(240,240,240)); | |
| 94 shield.setColorAt(1.0,QColor(215,215,215)); | |
| 95 | |
| 96 | |
| 97 // internal scale circle | |
| 98 painter.setBrush(QBrush(shield)); | |
| 99 painter.setPen(Pen); | |
| 100 painter.drawEllipse(-142,-142,284,284); | |
| 101 | |
| 102 painter.setPen(Qt::NoPen); | |
| 103 // nominal | |
| 104 painter.setBrush(QColor(0,200,0)); | |
| 105 assert(m_max-m_min != 0); | |
| 106 int angle = static_cast<int>( (3840 * ( m_nominal - m_min ))/(m_max-m_min) ); | |
| 107 if (m_min <= m_nominal && m_nominal < m_max ) | |
| 108 painter.drawPie(QRect(-141,-141,282,282),-480,3840 - angle % 5760 ); | |
| 109 // Critical | |
| 110 | |
| 111 painter.setBrush(QBrush(Qt::red)); | |
| 112 angle = static_cast<int>( (3840 * ( m_critical - m_min ))/(m_max-m_min) ); | |
| 113 if ( m_min <= m_critical && m_critical < m_max ) | |
| 114 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)); | |
| 115 // biała obwiednia | |
| 116 painter.setBrush(QBrush(shield)); | |
| 117 painter.drawEllipse(-129,-129,258,258); | |
| 118 | |
| 119 // Ustawienie się na początku skali | |
| 120 | |
| 121 painter.rotate(60.0); | |
| 122 | |
| 123 // Rysowanie skali kreski | |
| 124 painter.save(); | |
| 125 painter.setBrush(QBrush(Qt::black)); | |
| 126 int line_length=10; | |
| 127 for (int i=0;i<33;i++) | |
| 128 { | |
| 129 painter.setPen(Pen); | |
| 130 | |
| 131 if (i % 4) painter.drawLine(0,140,0,140-line_length); | |
| 132 else { | |
| 133 painter.setPen(Qt::NoPen); | |
| 134 painter.drawConvexPolygon(QPolygon(3, scaleTriangle)); | |
| 135 } | |
| 136 | |
| 137 painter.rotate(7.5); | |
| 138 | |
| 139 Pen.setWidth(3); | |
| 140 | |
| 141 if (i % 2) line_length=10; | |
| 142 else line_length=5; | |
| 143 } | |
| 144 painter.restore(); | |
| 145 | |
| 146 // Rysowanie skali liczby . | |
| 147 | |
| 148 if (true || digitOffset()) | |
| 149 { | |
| 150 painter.setPen(Qt::black); | |
| 151 painter.rotate(-60.0); | |
| 152 painter.setFont(digitFont()); | |
| 153 for (int i=0;i<9;i++) | |
| 154 { | |
| 155 double v = m_min + i*(m_max - m_min)/8.0; | |
| 156 if (fabs(v) < 0.000001 ) v = 0.0; | |
| 157 QString val = QString("%1").arg(v); | |
| 158 QSize Size = painter.fontMetrics().size(Qt::TextSingleLine, val); | |
| 159 painter.save(); | |
| 160 painter.translate( digitOffset() * cos((5+i)*PI/6.0), digitOffset() * sin((5+i)*PI/6.0)); | |
| 161 painter.drawText( QPointF( Size.width()/ -2.0, Size.height() / 4.0), val); | |
| 162 painter.restore(); | |
| 163 } | |
| 164 } | |
| 165 | |
| 166 | |
| 167 | |
| 168 }// paintBackground | |
| 169 | |
| 170 void ManoMeter::paintEvent(QPaintEvent * ) | |
| 171 { | |
| 172 drawBackground(); | |
| 173 QPainter painter(this); | |
| 174 initCoordinateSystem(painter); | |
| 175 // --------------------------------------------- /// | |
| 176 static const int hand[12] = {-4, 0, -1, 129, 1, 129, 4, 0, 8,-50, -8,-50}; | |
| 177 | |
| 178 | |
| 179 QPainterPath hand_path; | |
| 180 hand_path.moveTo(QPointF(hand[0],hand[1])); | |
| 181 | |
| 182 for (int i=2;i<10;i+=2) | |
| 183 hand_path.lineTo(hand[i],hand[i+1]); | |
| 184 | |
| 185 hand_path.cubicTo ( 8.1,-51.0, 5.0,-48.0, 0.0,-48.0); | |
| 186 hand_path.cubicTo( -5.0,-48.0, -8.1,-51.0, -8.0,-50.0); | |
| 187 | |
| 188 // Rysowanie wskazówki | |
| 189 painter.save(); | |
| 190 painter.rotate(60.0); | |
| 191 painter.setPen(Qt::NoPen); | |
| 192 painter.setBrush(QBrush(Qt::black)); | |
| 193 painter.rotate( (( value()-m_min) * 240.0) / static_cast<double> (m_max - m_min) ); | |
| 194 | |
| 195 painter.drawPath(hand_path); | |
| 196 | |
| 197 painter.drawEllipse(-10,-10,20,20); | |
| 198 | |
| 199 | |
| 200 painter.restore();// Przywrocenie do wychylenia o 60 stopni | |
| 201 | |
| 202 // Rysowanie wyświetlanej wartości | |
| 203 if (valueOffset()) | |
| 204 { | |
| 205 | |
| 206 if (value() >= critical() ) painter.setPen(Qt::red); | |
| 207 painter.setFont(valueFont()); | |
| 208 QString Str = prefix() + QString("%1").arg(value()) + suffix(); | |
| 209 QSize Size = painter.fontMetrics().size(Qt::TextSingleLine, Str); | |
| 210 painter.drawText( QPointF( Size.width() / -2.0,static_cast<int>( 0 - valueOffset())) , Str); | |
| 211 } | |
| 212 }// paintEvent |
