source: ntrip/trunk/GnssCenter/svgmap/svgmap.cpp@ 5024

Last change on this file since 5024 was 5024, checked in by mervart, 9 years ago
File size: 6.9 KB
Line 
1
2/* -------------------------------------------------------------------------
3 * RTNet GUI
4 * -------------------------------------------------------------------------
5 *
6 * Class: t_svgMap
7 *
8 * Purpose: Plot map of stations/satellites
9 *
10 * Author: L. Mervart
11 *
12 * Created: 05-Jan-2013
13 *
14 * Changes:
15 *
16 * -----------------------------------------------------------------------*/
17
18#include <QtSvg>
19
20#include <qwt_symbol.h>
21#include <qwt_plot.h>
22#include <qwt_plot_svgitem.h>
23#include <qwt_plot_curve.h>
24#include <qwt_plot_marker.h>
25#include <qwt_plot_canvas.h>
26#include <qwt_plot_zoomer.h>
27#include <qwt_plot_renderer.h>
28
29#include "svgmap.h"
30
31using namespace std;
32using namespace GnssCenter;
33
34Q_EXPORT_PLUGIN2(GnssCenter_svgMap, GnssCenter::t_svgMap)
35
36// Constructor
37/////////////////////////////////////////////////////////////////////////////
38t_svgMap::t_svgMap() : QDialog(), t_pluginInterface() {
39
40 // Map in Scalable Vector Graphics (svg) Format
41 // --------------------------------------------
42 _mapPlot = new QwtPlot();
43
44 _mapPlot->setAxisScale(QwtPlot::xBottom, -180.0, 180.0);
45 _mapPlot->setAxisScale(QwtPlot::yLeft, -90.0, 90.0);
46
47 _mapPlotZoomer = new QwtPlotZoomer(_mapPlot->canvas());
48
49 _mapPlot->canvas()->setFocusPolicy(Qt::WheelFocus);
50
51 QwtPlotSvgItem* mapItem = new QwtPlotSvgItem();
52 mapItem->loadFile(QRectF(-180.0, -90.0, 360.0, 180.0), ":world.svg");
53 mapItem->attach(_mapPlot);
54
55 // Buttons
56 // -------
57 int ww = QFontMetrics(font()).width('w');
58
59 _buttonClose = new QPushButton(tr("Close"), this);
60 _buttonClose->setMaximumWidth(10*ww);
61 connect(_buttonClose, SIGNAL(clicked()), this, SLOT(slotClose()));
62
63 _buttonPrint = new QPushButton(tr("Print"), this);
64 _buttonPrint->setMaximumWidth(10*ww);
65 connect(_buttonPrint, SIGNAL(clicked()), this, SLOT(slotPrint()));
66
67 _buttonWhatsThis = new QPushButton(tr("Help=Shift+F1"), this);
68 _buttonWhatsThis->setMaximumWidth(10*ww);
69 connect(_buttonWhatsThis, SIGNAL(clicked()), this, SLOT(slotWhatsThis()));
70
71 // Layout
72 // ------
73 QHBoxLayout* buttonLayout = new QHBoxLayout;
74 buttonLayout->addWidget(_buttonClose);
75 buttonLayout->addWidget(_buttonPrint);
76 buttonLayout->addWidget(_buttonWhatsThis);
77
78 QVBoxLayout* mainLayout = new QVBoxLayout(this);
79 mainLayout->addWidget(_mapPlot);
80 mainLayout->addLayout(buttonLayout);
81
82 // WhatsThis
83 // ---------
84 _buttonClose->setWhatsThis(tr("<p>Close window.</p>"));
85 _buttonPrint->setWhatsThis(tr("<p>Print stream distribution map.</p>"));
86
87 // Minimal and Maximal Coordinates
88 // -------------------------------
89 _minPointLat = 0.0;
90 _maxPointLat = 0.0;
91 _minPointLon = 0.0;
92 _maxPointLon = 0.0;
93
94 // Important
95 // ---------
96 _mapPlot->replot();
97}
98
99// Destructor
100/////////////////////////////////////////////////////////////////////////////
101t_svgMap::~t_svgMap() {
102 delete _mapPlot;
103 delete _buttonWhatsThis;
104}
105
106//
107/////////////////////////////////////////////////////////////////////////////
108void t_svgMap::slotNewPoint(const QString& name, double latDeg, double lonDeg) {
109
110 if (lonDeg > 180.0) lonDeg -= 360.0;
111
112 QColor red(220,20,60);
113 QwtSymbol* symbol = new QwtSymbol(QwtSymbol::Rect, QBrush(red),
114 QPen(red), QSize(2,2));
115 QwtPlotMarker* marker = new QwtPlotMarker();
116 marker->setValue(lonDeg, latDeg);
117 if (lonDeg > 170.0) {
118 marker->setLabelAlignment(Qt::AlignLeft);
119 }
120 else {
121 marker->setLabelAlignment(Qt::AlignRight);
122 }
123 QwtText text(name.left(4));
124 QFont font = text.font();
125 font.setPointSize(font.pointSize()*0.8);
126 text.setFont(font);
127 marker->setLabel(text);
128 marker->setSymbol(symbol);
129 marker->attach(_mapPlot);
130
131 // Remeber minimal and maximal coordinates
132 // ---------------------------------------
133 if (_minPointLat == 0.0 && _maxPointLat == 0.0 &&
134 _minPointLon == 0.0 && _maxPointLon == 0.0) {
135 _minPointLat = latDeg;
136 _maxPointLat = latDeg;
137 _minPointLon = lonDeg;
138 _maxPointLon = lonDeg;
139 }
140 else {
141 if (_maxPointLat < latDeg) {
142 _maxPointLat = latDeg;
143 }
144 else if (_minPointLat > latDeg) {
145 _minPointLat = latDeg;
146 }
147 if (_maxPointLon < lonDeg) {
148 _maxPointLon = lonDeg;
149 }
150 else if (_minPointLon > lonDeg) {
151 _minPointLon = lonDeg;
152 }
153 }
154}
155
156// Close
157////////////////////////////////////////////////////////////////////////////
158void t_svgMap::slotClose() {
159 done(0);
160}
161
162// Close Dialog gracefully
163////////////////////////////////////////////////////////////////////////////
164void t_svgMap::closeEvent(QCloseEvent* event) {
165 QDialog::closeEvent(event);
166}
167
168//
169////////////////////////////////////////////////////////////////////////////
170void t_svgMap::showEvent(QShowEvent* event) {
171 double width = _maxPointLon - _minPointLon;
172 double height = _maxPointLat - _minPointLat;
173 if (width > 0 && height > 0) {
174
175 // Extend plot area by 10 percent
176 // ------------------------------
177 double eps = 0.1;
178 double epsLon = eps * (_maxPointLon - _minPointLon);
179 double epsLat = eps * (_maxPointLat - _minPointLat);
180 double widthExt = width + 2 * epsLon;
181 double heightExt = height + 2 * epsLat;
182 double minLon = _minPointLon - epsLon;
183 double minLat = _minPointLat - epsLat;
184
185 // Keep lat/lon relations
186 // ----------------------
187 double widthBorder = widthExt;
188 double heightBorder = heightExt;
189 double scale = widthExt/heightExt/2.;
190 if ( scale < 1.) {
191 widthBorder = widthExt / scale;
192 minLon = minLon - (widthBorder - widthExt)/2.;
193 }
194 else {
195 heightBorder = heightExt * scale;
196 minLat = minLat - (heightBorder - heightExt)/2.;
197 }
198
199 // Borders shall not exceed min or max values
200 // ------------------------------------------
201 if (minLon < -180.) minLon = -180.;
202 if (minLat < -90.) minLat = -90.;
203 double maxLat = minLat + heightBorder;
204 if ( maxLat > 90) minLat = minLat - (maxLat - 90.);
205 double maxLon = minLon + widthBorder;
206 if ( maxLon > 180) minLon = minLon - (maxLon - 180.);
207
208 // Area large enough to justify world map
209 // --------------------------------------
210 if (widthBorder < 270.0 && heightBorder < 135.0) {
211 QRectF rect(minLon, minLat, widthBorder, heightBorder);
212 _mapPlotZoomer->zoom(rect);
213 }
214 }
215 QDialog::showEvent(event);
216}
217
218// Print the widget
219////////////////////////////////////////////////////////////////////////////
220void t_svgMap::slotPrint() {
221
222 QPrinter printer;
223 QPrintDialog* dialog = new QPrintDialog(&printer, this);
224 dialog->setWindowTitle(tr("Print Map"));
225 if (dialog->exec() != QDialog::Accepted) {
226 return;
227 }
228 else {
229 QwtPlotRenderer renderer;
230 renderer.setDiscardFlag(QwtPlotRenderer::DiscardBackground, false);
231 renderer.setLayoutFlag(QwtPlotRenderer::KeepFrames, true);
232 renderer.renderTo(_mapPlot, printer);
233 }
234}
235
236// Whats This Help
237////////////////////////////////////////////////////////////////////////////
238void t_svgMap::slotWhatsThis() {
239 QWhatsThis::enterWhatsThisMode();
240}
241
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