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
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
|
// SPDX-License-Identifier: GPL-2.0
#include <QApplication>
#include <QClipboard>
#include <QDebug>
#include <QVector>
#include "qmlmapwidgethelper.h"
#include "core/divesite.h"
#include "core/qthelper.h"
#include "qt-models/maplocationmodel.h"
#ifndef SUBSURFACE_MOBILE
#include "qt-models/filtermodels.h"
#endif
#define SMALL_CIRCLE_RADIUS_PX 26.0
MapWidgetHelper::MapWidgetHelper(QObject *parent) : QObject(parent)
{
m_mapLocationModel = new MapLocationModel(this);
m_smallCircleRadius = SMALL_CIRCLE_RADIUS_PX;
m_map = nullptr;
m_editMode = false;
connect(m_mapLocationModel, SIGNAL(selectedLocationChanged(MapLocation *)),
this, SLOT(selectedLocationChanged(MapLocation *)));
}
QGeoCoordinate MapWidgetHelper::getCoordinates(struct dive_site *ds)
{
if (!dive_site_has_gps_location(ds))
return QGeoCoordinate(0.0, 0.0);
return QGeoCoordinate(ds->location.lat.udeg * 0.000001, ds->location.lon.udeg * 0.000001);
}
void MapWidgetHelper::centerOnDiveSite(struct dive_site *ds)
{
if (!dive_site_has_gps_location(ds)) {
// dive site with no GPS
m_mapLocationModel->setSelected(ds, false);
QMetaObject::invokeMethod(m_map, "deselectMapLocation");
} else {
// dive site with GPS
m_mapLocationModel->setSelected(ds, false);
QGeoCoordinate dsCoord (ds->location.lat.udeg * 0.000001, ds->location.lon.udeg * 0.000001);
QMetaObject::invokeMethod(m_map, "centerOnCoordinate", Q_ARG(QVariant, QVariant::fromValue(dsCoord)));
}
}
void MapWidgetHelper::centerOnSelectedDiveSite()
{
QVector<struct dive_site *> selDS = m_mapLocationModel->selectedDs();
if (selDS.isEmpty()) {
// no selected dives with GPS coordinates
QMetaObject::invokeMethod(m_map, "deselectMapLocation");
return;
}
// find the most top-left and bottom-right dive sites on the map coordinate system.
qreal minLat = 0.0, minLon = 0.0, maxLat = 0.0, maxLon = 0.0;
int count = 0;
for(struct dive_site *dss: selDS) {
if (!has_location(&dss->location))
continue;
qreal lat = dss->location.lat.udeg * 0.000001;
qreal lon = dss->location.lon.udeg * 0.000001;
if (++count == 1) {
minLat = maxLat = lat;
minLon = maxLon = lon;
continue;
}
if (lat < minLat)
minLat = lat;
else if (lat > maxLat)
maxLat = lat;
if (lon < minLon)
minLon = lon;
else if (lon > maxLon)
maxLon = lon;
}
// Pass coordinates to QML, either as a point or as a rectangle.
// If we didn't find any coordinates, do nothing.
if (count == 1) {
QGeoCoordinate dsCoord (selDS[0]->location.lat.udeg * 0.000001, selDS[0]->location.lon.udeg * 0.000001);
QMetaObject::invokeMethod(m_map, "centerOnCoordinate", Q_ARG(QVariant, QVariant::fromValue(dsCoord)));
} else if (count > 1) {
QGeoCoordinate coordTopLeft(minLat, minLon);
QGeoCoordinate coordBottomRight(maxLat, maxLon);
QGeoCoordinate coordCenter(minLat + (maxLat - minLat) * 0.5, minLon + (maxLon - minLon) * 0.5);
QMetaObject::invokeMethod(m_map, "centerOnRectangle",
Q_ARG(QVariant, QVariant::fromValue(coordTopLeft)),
Q_ARG(QVariant, QVariant::fromValue(coordBottomRight)),
Q_ARG(QVariant, QVariant::fromValue(coordCenter)));
}
}
void MapWidgetHelper::reloadMapLocations()
{
#ifndef SUBSURFACE_MOBILE
// The filter being set to dive site is the signal that we are in dive site edit mode.
// This is the case when either the dive site edit tab or the dive site list tab are active.
if (MultiFilterSortModel::instance()->diveSiteMode())
enterEditMode();
else
exitEditMode();
#endif
m_mapLocationModel->reload(m_map);
}
void MapWidgetHelper::selectedLocationChanged(MapLocation *location)
{
int idx;
struct dive *dive;
QList<int> selectedDiveIds;
QGeoCoordinate locationCoord = location->coordinate();
for_each_dive (idx, dive) {
struct dive_site *ds = get_dive_site_for_dive(dive);
if (!dive_site_has_gps_location(ds))
continue;
#ifndef SUBSURFACE_MOBILE
const qreal latitude = ds->location.lat.udeg * 0.000001;
const qreal longitude = ds->location.lon.udeg * 0.000001;
QGeoCoordinate dsCoord(latitude, longitude);
if (locationCoord.distanceTo(dsCoord) < m_smallCircleRadius)
selectedDiveIds.append(idx);
}
#else // the mobile version doesn't support multi-dive selection
if (ds == location->divesite())
selectedDiveIds.append(dive->id); // use id here instead of index
}
int last; // get latest dive chronologically
if (!selectedDiveIds.isEmpty()) {
last = selectedDiveIds.last();
selectedDiveIds.clear();
selectedDiveIds.append(last);
}
#endif
emit selectedDivesChanged(selectedDiveIds);
}
void MapWidgetHelper::selectVisibleLocations()
{
int idx;
struct dive *dive;
QList<int> selectedDiveIds;
for_each_dive (idx, dive) {
struct dive_site *ds = get_dive_site_for_dive(dive);
if (!dive_site_has_gps_location(ds))
continue;
const qreal latitude = ds->location.lat.udeg * 0.000001;
const qreal longitude = ds->location.lon.udeg * 0.000001;
QGeoCoordinate dsCoord(latitude, longitude);
QPointF point;
QMetaObject::invokeMethod(m_map, "fromCoordinate", Q_RETURN_ARG(QPointF, point),
Q_ARG(QGeoCoordinate, dsCoord));
if (!qIsNaN(point.x()))
#ifndef SUBSURFACE_MOBILE // indexes on desktop
selectedDiveIds.append(idx);
}
#else // use id on mobile instead of index
selectedDiveIds.append(dive->id);
}
int last; // get latest dive chronologically
if (!selectedDiveIds.isEmpty()) {
last = selectedDiveIds.last();
selectedDiveIds.clear();
selectedDiveIds.append(last);
}
#endif
emit selectedDivesChanged(selectedDiveIds);
}
/*
* Based on a 2D Map widget circle with center "coord" and radius SMALL_CIRCLE_RADIUS_PX,
* obtain a "small circle" with radius m_smallCircleRadius in meters:
* https://en.wikipedia.org/wiki/Circle_of_a_sphere
*
* The idea behind this circle is to be able to select multiple nearby dives, when clicking on
* the map. This code can be in QML, but it is in C++ instead for performance reasons.
*
* This can be made faster with an exponential regression [a * exp(b * x)], with a pretty
* decent R-squared, but it becomes bound to map provider zoom level mappings and the
* SMALL_CIRCLE_RADIUS_PX value, which makes the code hard to maintain.
*/
void MapWidgetHelper::calculateSmallCircleRadius(QGeoCoordinate coord)
{
QPointF point;
QMetaObject::invokeMethod(m_map, "fromCoordinate", Q_RETURN_ARG(QPointF, point),
Q_ARG(QGeoCoordinate, coord));
QPointF point2(point.x() + SMALL_CIRCLE_RADIUS_PX, point.y());
QGeoCoordinate coord2;
QMetaObject::invokeMethod(m_map, "toCoordinate", Q_RETURN_ARG(QGeoCoordinate, coord2),
Q_ARG(QPointF, point2));
m_smallCircleRadius = coord2.distanceTo(coord);
}
static location_t mk_location(QGeoCoordinate coord)
{
return create_location(coord.latitude(), coord.longitude());
}
void MapWidgetHelper::copyToClipboardCoordinates(QGeoCoordinate coord, bool formatTraditional)
{
bool savep = prefs.coordinates_traditional;
prefs.coordinates_traditional = formatTraditional;
location_t location = mk_location(coord);
QApplication::clipboard()->setText(printGPSCoords(&location), QClipboard::Clipboard);
prefs.coordinates_traditional = savep;
}
void MapWidgetHelper::updateCurrentDiveSiteCoordinatesFromMap(struct dive_site *ds, QGeoCoordinate coord)
{
MapLocation *loc = m_mapLocationModel->getMapLocation(ds);
if (loc)
loc->setCoordinate(coord);
location_t location = mk_location(coord);
emit coordinatesChanged(ds, location);
}
void MapWidgetHelper::updateDiveSiteCoordinates(struct dive_site *ds, const location_t &location)
{
if (!ds)
return;
const qreal latitude_r = location.lat.udeg * 0.000001;
const qreal longitude_r = location.lon.udeg * 0.000001;
QGeoCoordinate coord(latitude_r, longitude_r);
m_mapLocationModel->updateMapLocationCoordinates(ds, coord);
QMetaObject::invokeMethod(m_map, "centerOnCoordinate", Q_ARG(QVariant, QVariant::fromValue(coord)));
}
void MapWidgetHelper::exitEditMode()
{
if (!m_editMode)
return;
m_editMode = false;
emit editModeChanged();
}
void MapWidgetHelper::enterEditMode()
{
if (m_editMode)
return;
m_editMode = true;
emit editModeChanged();
}
QString MapWidgetHelper::pluginObject()
{
QString str;
str += "import QtQuick 2.0;";
str += "import QtLocation 5.3;";
str += "Plugin {";
str += " id: mapPlugin;";
str += " name: 'googlemaps';";
str += " PluginParameter { name: 'googlemaps.maps.language'; value: '%lang%' }";
str += " PluginParameter { name: 'googlemaps.cachefolder'; value: '%cacheFolder%' }";
str += " Component.onCompleted: {";
str += " if (availableServiceProviders.indexOf(name) === -1) {";
str += " console.warn('MapWidget.qml: cannot find a plugin named: ' + name);";
str += " }";
str += " }";
str += "}";
QString lang = uiLanguage(NULL).replace('_', '-');
str.replace("%lang%", lang);
QString cacheFolder = QString(system_default_directory()).append("/googlemaps");
str.replace("%cacheFolder%", cacheFolder.replace("\\", "/"));
return str;
}
|