source: ntrip/trunk/BNC/src/bncmap_svg.cpp@ 6774

Last change on this file since 6774 was 6774, checked in by weber, 7 years ago

Width of help button enlarged

File size: 7.8 KB
Line 
1// Part of BNC, a utility for retrieving decoding and
2// converting GNSS data streams from NTRIP broadcasters.
3//
4// Copyright (C) 2007
5// German Federal Agency for Cartography and Geodesy (BKG)
6// http://www.bkg.bund.de
7// Czech Technical University Prague, Department of Geodesy
8// http://www.fsv.cvut.cz
9//
10// Email: euref-ip@bkg.bund.de
11//
12// This program is free software; you can redistribute it and/or
13// modify it under the terms of the GNU General Public License
14// as published by the Free Software Foundation, version 2.
15//
16// This program is distributed in the hope that it will be useful,
17// but WITHOUT ANY WARRANTY; without even the implied warranty of
18// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19// GNU General Public License for more details.
20//
21// You should have received a copy of the GNU General Public License
22// along with this program; if not, write to the Free Software
23// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24
25/* -------------------------------------------------------------------------
26 * BKG NTRIP Client
27 * -------------------------------------------------------------------------
28 *
29 * Class: t_bncMap
30 *
31 * Purpose: Plot map of stations from NTRIP source table
32 *
33 * Author: L. Mervart
34 *
35 * Created: 02-Sep-2012
36 *
37 * Changes:
38 *
39 * -----------------------------------------------------------------------*/
40
41#include <QtSvg>
42
43#include <qwt_symbol.h>
44#include <qwt_plot.h>
45#include <qwt_plot_svgitem.h>
46#include <qwt_plot_curve.h>
47#include <qwt_plot_marker.h>
48#include <qwt_plot_canvas.h>
49#include <qwt_plot_zoomer.h>
50#include <qwt_plot_renderer.h>
51
52#include "bncmap.h"
53
54// Constructor
55/////////////////////////////////////////////////////////////////////////////
56t_bncMap::t_bncMap(QWidget* parent) : QDialog(parent) {
57
58 // Map in Scalable Vector Graphics (svg) Format
59 // --------------------------------------------
60 _mapPlot = new QwtPlot();
61
62 _mapPlot->setAxisScale(QwtPlot::xBottom, -180.0, 180.0);
63 _mapPlot->setAxisScale(QwtPlot::yLeft, -90.0, 90.0);
64
65 _mapPlotZoomer = new QwtPlotZoomer(_mapPlot->canvas());
66
67 _mapPlot->canvas()->setFocusPolicy(Qt::WheelFocus);
68
69 QwtPlotSvgItem* mapItem = new QwtPlotSvgItem();
70 mapItem->loadFile(QRectF(-180.0, -90.0, 360.0, 180.0), ":world.svg");
71 mapItem->attach(_mapPlot);
72
73 // Buttons
74 // -------
75 int ww = QFontMetrics(font()).width('w');
76
77 _buttonClose = new QPushButton(tr("Close"), this);
78 _buttonClose->setMaximumWidth(10*ww);
79 connect(_buttonClose, SIGNAL(clicked()), this, SLOT(slotClose()));
80
81 _buttonPrint = new QPushButton(tr("Print"), this);
82 _buttonPrint->setMaximumWidth(10*ww);
83 connect(_buttonPrint, SIGNAL(clicked()), this, SLOT(slotPrint()));
84
85 _buttonWhatsThis = new QPushButton(tr("Help=Shift+F1"), this);
86 _buttonWhatsThis->setMaximumWidth(14*ww); // weber
87 connect(_buttonWhatsThis, SIGNAL(clicked()), this, SLOT(slotWhatsThis()));
88
89 // Layout
90 // ------
91 QHBoxLayout* buttonLayout = new QHBoxLayout;
92 buttonLayout->addWidget(_buttonClose);
93 buttonLayout->addWidget(_buttonPrint);
94 buttonLayout->addWidget(_buttonWhatsThis);
95
96 QVBoxLayout* mainLayout = new QVBoxLayout(this);
97 mainLayout->addWidget(_mapPlot);
98 mainLayout->addLayout(buttonLayout);
99
100 // WhatsThis
101 // ---------
102 _buttonClose->setWhatsThis(tr("<p>Close window.</p>"));
103 _buttonPrint->setWhatsThis(tr("<p>Print stream distribution map.</p>"));
104
105 // Minimal and Maximal Coordinates
106 // -------------------------------
107 _minPointLat = 0.0;
108 _maxPointLat = 0.0;
109 _minPointLon = 0.0;
110 _maxPointLon = 0.0;
111
112 // Important
113 // ---------
114 _mapPlot->replot();
115}
116
117// Destructor
118/////////////////////////////////////////////////////////////////////////////
119t_bncMap::~t_bncMap() {
120 delete _mapPlot;
121 delete _buttonWhatsThis;
122}
123
124//
125/////////////////////////////////////////////////////////////////////////////
126void t_bncMap::slotNewPoint(const QString& name, double latDeg, double lonDeg) {
127
128 if (lonDeg > 180.0) lonDeg -= 360.0;
129
130 QColor red(220,20,60);
131 QwtSymbol* symbol = new QwtSymbol(QwtSymbol::Rect, QBrush(red),
132 QPen(red), QSize(2,2));
133 QwtPlotMarker* marker = new QwtPlotMarker();
134 marker->setValue(lonDeg, latDeg);
135 if (lonDeg > 170.0) {
136 marker->setLabelAlignment(Qt::AlignLeft);
137 }
138 else {
139 marker->setLabelAlignment(Qt::AlignRight);
140 }
141 QwtText text(name.left(4));
142 QFont font = text.font();
143 font.setPointSize(int(font.pointSize()*0.8));
144 text.setFont(font);
145 marker->setLabel(text);
146 marker->setSymbol(symbol);
147 marker->attach(_mapPlot);
148
149 // Remeber minimal and maximal coordinates
150 // ---------------------------------------
151 if (_minPointLat == 0.0 && _maxPointLat == 0.0 &&
152 _minPointLon == 0.0 && _maxPointLon == 0.0) {
153 _minPointLat = latDeg;
154 _maxPointLat = latDeg;
155 _minPointLon = lonDeg;
156 _maxPointLon = lonDeg;
157 }
158 else {
159 if (_maxPointLat < latDeg) {
160 _maxPointLat = latDeg;
161 }
162 else if (_minPointLat > latDeg) {
163 _minPointLat = latDeg;
164 }
165 if (_maxPointLon < lonDeg) {
166 _maxPointLon = lonDeg;
167 }
168 else if (_minPointLon > lonDeg) {
169 _minPointLon = lonDeg;
170 }
171 }
172}
173
174// Close
175////////////////////////////////////////////////////////////////////////////
176void t_bncMap::slotClose() {
177 done(0);
178}
179
180// Close Dialog gracefully
181////////////////////////////////////////////////////////////////////////////
182void t_bncMap::closeEvent(QCloseEvent* event) {
183 QDialog::closeEvent(event);
184}
185
186//
187////////////////////////////////////////////////////////////////////////////
188void t_bncMap::showEvent(QShowEvent* event) {
189 double width = _maxPointLon - _minPointLon;
190 double height = _maxPointLat - _minPointLat;
191 if (width > 0 && height > 0) {
192
193 // Extend plot area by 10 percent
194 // ------------------------------
195 double eps = 0.1;
196 double epsLon = eps * (_maxPointLon - _minPointLon);
197 double epsLat = eps * (_maxPointLat - _minPointLat);
198 double widthExt = width + 2 * epsLon;
199 double heightExt = height + 2 * epsLat;
200 double minLon = _minPointLon - epsLon;
201 double minLat = _minPointLat - epsLat;
202
203 // Keep lat/lon relations
204 // ----------------------
205 double widthBorder = widthExt;
206 double heightBorder = heightExt;
207 double scale = widthExt/heightExt/2.;
208 if ( scale < 1.) {
209 widthBorder = widthExt / scale;
210 minLon = minLon - (widthBorder - widthExt)/2.;
211 }
212 else {
213 heightBorder = heightExt * scale;
214 minLat = minLat - (heightBorder - heightExt)/2.;
215 }
216
217 // Borders shall not exceed min or max values
218 // ------------------------------------------
219 if (minLon < -180.) minLon = -180.;
220 if (minLat < -90.) minLat = -90.;
221 double maxLat = minLat + heightBorder;
222 if ( maxLat > 90) minLat = minLat - (maxLat - 90.);
223 double maxLon = minLon + widthBorder;
224 if ( maxLon > 180) minLon = minLon - (maxLon - 180.);
225
226 // Area large enough to justify world map
227 // --------------------------------------
228 if (widthBorder < 270.0 && heightBorder < 135.0) {
229 QRectF rect(minLon, minLat, widthBorder, heightBorder);
230 _mapPlotZoomer->zoom(rect);
231 }
232 }
233 QDialog::showEvent(event);
234}
235
236// Print the widget
237////////////////////////////////////////////////////////////////////////////
238void t_bncMap::slotPrint() {
239
240 QPrinter printer;
241 QPrintDialog* dialog = new QPrintDialog(&printer, this);
242 dialog->setWindowTitle(tr("Print Map"));
243 if (dialog->exec() != QDialog::Accepted) {
244 return;
245 }
246 else {
247 QwtPlotRenderer renderer;
248 renderer.setDiscardFlag(QwtPlotRenderer::DiscardBackground, false);
249 renderer.setLayoutFlag(QwtPlotRenderer::KeepFrames, true);
250 renderer.renderTo(_mapPlot, printer);
251 }
252}
253
254// Whats This Help
255////////////////////////////////////////////////////////////////////////////
256void t_bncMap::slotWhatsThis() {
257QWhatsThis::enterWhatsThisMode();
258}
259
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