1 | // Part of BNC, a utility for retrieving decoding and
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2 | // converting GNSS data streams from NTRIP broadcasters.
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3 | //
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4 | // Copyright (C) 2007
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5 | // German Federal Agency for Cartography and Geodesy (BKG)
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6 | // http://www.bkg.bund.de
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7 | // Czech Technical University Prague, Department of Geodesy
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8 | // http://www.fsv.cvut.cz
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9 | //
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10 | // Email: euref-ip@bkg.bund.de
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11 | //
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12 | // This program is free software; you can redistribute it and/or
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13 | // modify it under the terms of the GNU General Public License
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14 | // as published by the Free Software Foundation, version 2.
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15 | //
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16 | // This program is distributed in the hope that it will be useful,
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17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 | // GNU General Public License for more details.
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20 | //
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21 | // You should have received a copy of the GNU General Public License
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22 | // along with this program; if not, write to the Free Software
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23 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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24 |
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25 | /* -------------------------------------------------------------------------
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26 | * BKG NTRIP Client
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27 | * -------------------------------------------------------------------------
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28 | *
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29 | * Class: t_bncMap
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30 | *
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31 | * Purpose: Plot map of stations from NTRIP source table
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32 | *
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33 | * Author: L. Mervart
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34 | *
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35 | * Created: 02-Sep-2012
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36 | *
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37 | * Changes:
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38 | *
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39 | * -----------------------------------------------------------------------*/
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40 |
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41 | #include <QtSvg>
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42 |
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43 | #include <qwt_symbol.h>
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44 | #include <qwt_plot.h>
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45 | #include <qwt_plot_svgitem.h>
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46 | #include <qwt_plot_curve.h>
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47 | #include <qwt_plot_marker.h>
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48 | #include <qwt_plot_canvas.h>
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49 | #include <qwt_plot_zoomer.h>
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50 | #include <qwt_plot_renderer.h>
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51 |
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52 | #include "bncmap.h"
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53 |
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54 | // Constructor
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55 | /////////////////////////////////////////////////////////////////////////////
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56 | t_bncMap::t_bncMap(QWidget* parent) : QDialog(parent) {
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57 |
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58 | // Map in Scalable Vector Graphics (svg) Format
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59 | // --------------------------------------------
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60 | _mapPlot = new QwtPlot();
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61 |
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62 | _mapPlot->setAxisScale(QwtPlot::xBottom, -180.0, 180.0);
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63 | _mapPlot->setAxisScale(QwtPlot::yLeft, -90.0, 90.0);
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64 |
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65 | _mapPlotZoomer = new QwtPlotZoomer(_mapPlot->canvas());
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66 |
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67 | _mapPlot->canvas()->setFocusPolicy(Qt::WheelFocus);
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68 |
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69 | QwtPlotSvgItem* mapItem = new QwtPlotSvgItem();
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70 | mapItem->loadFile(QRectF(-180.0, -90.0, 360.0, 180.0), ":world.svg");
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71 | mapItem->attach(_mapPlot);
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72 |
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73 | // Buttons
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74 | // -------
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75 | int ww = QFontMetrics(font()).width('w');
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76 |
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77 | _buttonClose = new QPushButton(tr("Close"), this);
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78 | _buttonClose->setMaximumWidth(10*ww);
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79 | connect(_buttonClose, SIGNAL(clicked()), this, SLOT(slotClose()));
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80 |
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81 | _buttonPrint = new QPushButton(tr("Print"), this);
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82 | _buttonPrint->setMaximumWidth(10*ww);
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83 | connect(_buttonPrint, SIGNAL(clicked()), this, SLOT(slotPrint()));
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84 |
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85 | _buttonWhatsThis = new QPushButton(tr("Help=Shift+F1"), this);
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86 | _buttonWhatsThis->setMaximumWidth(14*ww); // weber
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87 | connect(_buttonWhatsThis, SIGNAL(clicked()), this, SLOT(slotWhatsThis()));
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88 |
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89 | // Layout
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90 | // ------
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91 | QHBoxLayout* buttonLayout = new QHBoxLayout;
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92 | buttonLayout->addWidget(_buttonClose);
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93 | buttonLayout->addWidget(_buttonPrint);
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94 | buttonLayout->addWidget(_buttonWhatsThis);
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95 |
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96 | QVBoxLayout* mainLayout = new QVBoxLayout(this);
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97 | mainLayout->addWidget(_mapPlot);
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98 | mainLayout->addLayout(buttonLayout);
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99 |
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100 | // WhatsThis
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101 | // ---------
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102 | _buttonClose->setWhatsThis(tr("<p>Close window.</p>"));
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103 | _buttonPrint->setWhatsThis(tr("<p>Print stream distribution map.</p>"));
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104 |
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105 | // Minimal and Maximal Coordinates
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106 | // -------------------------------
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107 | _minPointLat = 0.0;
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108 | _maxPointLat = 0.0;
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109 | _minPointLon = 0.0;
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110 | _maxPointLon = 0.0;
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111 |
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112 | // Important
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113 | // ---------
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114 | _mapPlot->replot();
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115 | }
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116 |
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117 | // Destructor
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118 | /////////////////////////////////////////////////////////////////////////////
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119 | t_bncMap::~t_bncMap() {
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120 | delete _mapPlot;
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121 | delete _buttonWhatsThis;
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122 | }
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123 |
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124 | //
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125 | /////////////////////////////////////////////////////////////////////////////
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126 | void t_bncMap::slotNewPoint(const QString& name, double latDeg, double lonDeg) {
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127 |
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128 | if (lonDeg > 180.0) lonDeg -= 360.0;
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129 |
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130 | QColor red(220,20,60);
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131 | QwtSymbol* symbol = new QwtSymbol(QwtSymbol::Rect, QBrush(red),
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132 | QPen(red), QSize(2,2));
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133 | QwtPlotMarker* marker = new QwtPlotMarker();
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134 | marker->setValue(lonDeg, latDeg);
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135 | if (lonDeg > 170.0) {
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136 | marker->setLabelAlignment(Qt::AlignLeft);
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137 | }
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138 | else {
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139 | marker->setLabelAlignment(Qt::AlignRight);
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140 | }
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141 | QwtText text(name.left(4));
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142 | QFont font = text.font();
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143 | font.setPointSize(int(font.pointSize()*0.8));
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144 | text.setFont(font);
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145 | marker->setLabel(text);
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146 | marker->setSymbol(symbol);
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147 | marker->attach(_mapPlot);
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148 |
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149 | // Remeber minimal and maximal coordinates
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150 | // ---------------------------------------
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151 | if (_minPointLat == 0.0 && _maxPointLat == 0.0 &&
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152 | _minPointLon == 0.0 && _maxPointLon == 0.0) {
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153 | _minPointLat = latDeg;
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154 | _maxPointLat = latDeg;
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155 | _minPointLon = lonDeg;
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156 | _maxPointLon = lonDeg;
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157 | }
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158 | else {
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159 | if (_maxPointLat < latDeg) {
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160 | _maxPointLat = latDeg;
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161 | }
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162 | else if (_minPointLat > latDeg) {
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163 | _minPointLat = latDeg;
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164 | }
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165 | if (_maxPointLon < lonDeg) {
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166 | _maxPointLon = lonDeg;
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167 | }
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168 | else if (_minPointLon > lonDeg) {
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169 | _minPointLon = lonDeg;
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170 | }
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171 | }
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172 | }
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173 |
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174 | // Close
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175 | ////////////////////////////////////////////////////////////////////////////
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176 | void t_bncMap::slotClose() {
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177 | done(0);
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178 | }
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179 |
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180 | // Close Dialog gracefully
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181 | ////////////////////////////////////////////////////////////////////////////
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182 | void t_bncMap::closeEvent(QCloseEvent* event) {
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183 | QDialog::closeEvent(event);
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184 | }
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185 |
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186 | //
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187 | ////////////////////////////////////////////////////////////////////////////
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188 | void t_bncMap::showEvent(QShowEvent* event) {
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189 | double width = _maxPointLon - _minPointLon;
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190 | double height = _maxPointLat - _minPointLat;
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191 | if (width > 0 && height > 0) {
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192 |
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193 | // Extend plot area by 10 percent
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194 | // ------------------------------
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195 | double eps = 0.1;
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196 | double epsLon = eps * (_maxPointLon - _minPointLon);
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197 | double epsLat = eps * (_maxPointLat - _minPointLat);
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198 | double widthExt = width + 2 * epsLon;
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199 | double heightExt = height + 2 * epsLat;
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200 | double minLon = _minPointLon - epsLon;
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201 | double minLat = _minPointLat - epsLat;
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202 |
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203 | // Keep lat/lon relations
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204 | // ----------------------
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205 | double widthBorder = widthExt;
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206 | double heightBorder = heightExt;
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207 | double scale = widthExt/heightExt/2.;
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208 | if ( scale < 1.) {
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209 | widthBorder = widthExt / scale;
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210 | minLon = minLon - (widthBorder - widthExt)/2.;
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211 | }
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212 | else {
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213 | heightBorder = heightExt * scale;
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214 | minLat = minLat - (heightBorder - heightExt)/2.;
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215 | }
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216 |
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217 | // Borders shall not exceed min or max values
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218 | // ------------------------------------------
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219 | if (minLon < -180.) minLon = -180.;
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220 | if (minLat < -90.) minLat = -90.;
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221 | double maxLat = minLat + heightBorder;
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222 | if ( maxLat > 90) minLat = minLat - (maxLat - 90.);
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223 | double maxLon = minLon + widthBorder;
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224 | if ( maxLon > 180) minLon = minLon - (maxLon - 180.);
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225 |
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226 | // Area large enough to justify world map
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227 | // --------------------------------------
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228 | if (widthBorder < 270.0 && heightBorder < 135.0) {
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229 | QRectF rect(minLon, minLat, widthBorder, heightBorder);
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230 | _mapPlotZoomer->zoom(rect);
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231 | }
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232 | }
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233 | QDialog::showEvent(event);
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234 | }
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235 |
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236 | // Print the widget
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237 | ////////////////////////////////////////////////////////////////////////////
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238 | void t_bncMap::slotPrint() {
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239 |
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240 | QPrinter printer;
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241 | QPrintDialog* dialog = new QPrintDialog(&printer, this);
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242 | dialog->setWindowTitle(tr("Print Map"));
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243 | if (dialog->exec() != QDialog::Accepted) {
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244 | return;
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245 | }
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246 | else {
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247 | QwtPlotRenderer renderer;
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248 | renderer.setDiscardFlag(QwtPlotRenderer::DiscardBackground, false);
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249 | renderer.setLayoutFlag(QwtPlotRenderer::KeepFrames, true);
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250 | renderer.renderTo(_mapPlot, printer);
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251 | }
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252 | }
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253 |
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254 | // Whats This Help
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255 | ////////////////////////////////////////////////////////////////////////////
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256 | void t_bncMap::slotWhatsThis() {
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257 | QWhatsThis::enterWhatsThisMode();
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258 | }
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259 |
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