Added the "show cursor coordinates" option

Closes #167

gpxsee.pro

@@ -157,7 +157,8 @@ HEADERS += src/common/config.h \
     src/data/dem.h \
     src/data/polygon.h \
     src/data/area.h \
-    src/map/obliquestereographic.h
+    src/map/obliquestereographic.h \
+    src/GUI/coordinatesitem.h
 SOURCES += src/main.cpp \
     src/common/coordinates.cpp \
     src/common/rectc.cpp \
@@ -271,7 +272,8 @@ SOURCES += src/main.cpp \
     src/data/slfparser.cpp \
     src/data/dem.cpp \
     src/data/polygon.cpp \
-    src/map/obliquestereographic.cpp
+    src/map/obliquestereographic.cpp \
+    src/GUI/coordinatesitem.cpp
 
 greaterThan(QT_MAJOR_VERSION, 4) {
     HEADERS += src/data/geojsonparser.h

src/GUI/coordinatesitem.cpp

@@ -0,0 +1,56 @@
+#include <QFontMetrics>
+#include <QPainter>
+#include "font.h"
+#include "coordinatesitem.h"
+
+
+CoordinatesItem::CoordinatesItem(QGraphicsItem *parent) : QGraphicsItem(parent)
+{
+	_format = DecimalDegrees;
+
+	_font.setPixelSize(FONT_SIZE);
+	_font.setFamily(FONT_FAMILY);
+
+	updateBoundingRect();
+}
+
+void CoordinatesItem::paint(QPainter *painter,
+  const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+	Q_UNUSED(option);
+	Q_UNUSED(widget);
+
+	if (!_c.isValid())
+		return;
+
+	QFontMetrics fm(_font);
+	painter->setFont(_font);
+	painter->drawText(0, -fm.descent(), Format::coordinates(_c, _format));
+
+/*
+	painter->setPen(Qt::red);
+	painter->drawRect(boundingRect());
+*/
+}
+
+void CoordinatesItem::setCoordinates(const Coordinates &c)
+{
+	_c = c;
+	update();
+}
+
+void CoordinatesItem::setFormat(const CoordinatesFormat &format)
+{
+	prepareGeometryChange();
+
+	_format = format;
+	updateBoundingRect();
+}
+
+void CoordinatesItem::updateBoundingRect()
+{
+	QFontMetrics fm(_font);
+	_boundingRect = fm.tightBoundingRect(Format::coordinates(
+	  Coordinates(-180, -90), _format));
+	_boundingRect.moveBottom(-fm.descent());
+}

src/GUI/coordinatesitem.h

@@ -0,0 +1,30 @@
+#ifndef COORDINATESITEM_H
+#define COORDINATESITEM_H
+
+#include <QGraphicsItem>
+#include <QFont>
+#include "common/coordinates.h"
+#include "format.h"
+
+class CoordinatesItem : public QGraphicsItem
+{
+public:
+	CoordinatesItem(QGraphicsItem *parent = 0);
+
+	QRectF boundingRect() const {return _boundingRect;}
+	void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
+	  QWidget *widget);
+
+	void setCoordinates(const Coordinates &c);
+	void setFormat(const CoordinatesFormat &format);
+
+private:
+	void updateBoundingRect();
+
+	Coordinates _c;
+	CoordinatesFormat _format;
+	QRectF _boundingRect;
+	QFont _font;
+};
+
+#endif // COORDINATESITEM_H

src/GUI/gui.cpp

@@ -313,6 +313,11 @@ void GUI::createActions()
 		_showMapAction->setEnabled(false);
 		_clearMapCacheAction->setEnabled(false);
 	}
+	_showCoordinatesAction = new QAction(tr("Show cursor coordinates"), this);
+	_showCoordinatesAction->setMenuRole(QAction::NoRole);
+	_showCoordinatesAction->setCheckable(true);
+	connect(_showCoordinatesAction, SIGNAL(triggered(bool)), _mapView,
+	  SLOT(showCoordinates(bool)));
 
 	// Data actions
 	_showTracksAction = new QAction(tr("Show tracks"), this);
@@ -502,6 +507,8 @@ void GUI::createMenus()
 	_mapMenu->addAction(_loadMapAction);
 	_mapMenu->addAction(_clearMapCacheAction);
 	_mapMenu->addSeparator();
+	_mapMenu->addAction(_showCoordinatesAction);
+	_mapMenu->addSeparator();
 	_mapMenu->addAction(_showMapAction);
 
 	QMenu *graphMenu = menuBar()->addMenu(tr("&Graph"));
@@ -1674,6 +1681,8 @@ void GUI::writeSettings()
 	settings.setValue(CURRENT_MAP_SETTING, _map->name());
 	if (_showMapAction->isChecked() != SHOW_MAP_DEFAULT)
 		settings.setValue(SHOW_MAP_SETTING, _showMapAction->isChecked());
+	if (_showCoordinatesAction->isChecked() != SHOW_COORDINATES_DEFAULT)
+		settings.setValue(SHOW_COORDINATES_SETTING, _showMapAction->isChecked());
 	settings.endGroup();
 
 	settings.beginGroup(GRAPH_SETTINGS_GROUP);
@@ -1897,6 +1906,11 @@ void GUI::readSettings()
 		int index = mapIndex(settings.value(CURRENT_MAP_SETTING).toString());
 		_mapActions.at(index)->trigger();
 	}
+	if (settings.value(SHOW_COORDINATES_SETTING, SHOW_COORDINATES_DEFAULT)
+	  .toBool()) {
+		_showCoordinatesAction->setChecked(true);
+		_mapView->showCoordinates(true);
+	}
 	settings.endGroup();
 
 	settings.beginGroup(GRAPH_SETTINGS_GROUP);

src/GUI/gui.h

@@ -193,6 +193,7 @@ private:
 	QAction *_showAreasAction;
 	QAction *_showRouteWaypointsAction;
 	QAction *_showMarkersAction;
+	QAction *_showCoordinatesAction;
 	QAction *_openOptionsAction;
 	QAction *_mapsEnd;
 	QList<QAction*> _mapActions;

src/GUI/mapview.cpp

@@ -13,6 +13,7 @@
 #include "waypointitem.h"
 #include "areaitem.h"
 #include "scaleitem.h"
+#include "coordinatesitem.h"
 #include "keys.h"
 #include "mapview.h"
 
@@ -21,6 +22,7 @@
 #define MIN_DIGITAL_ZOOM -3
 #define MARGIN           10
 #define SCALE_OFFSET     7
+#define COORDINATES_OFFSET SCALE_OFFSET
 
 
 MapView::MapView(Map *map, POI *poi, QWidget *parent)
@@ -41,6 +43,10 @@ MapView::MapView(Map *map, POI *poi, QWidget *parent)
 	_mapScale = new ScaleItem();
 	_mapScale->setZValue(2.0);
 	_scene->addItem(_mapScale);
+	_coordinates = new CoordinatesItem();
+	_coordinates->setZValue(2.0);
+	_coordinates->setVisible(false);
+	_scene->addItem(_coordinates);
 
 	_map = map;
 	_map->load();
@@ -95,6 +101,8 @@ void MapView::centerOn(const QPointF &pos)
 	QRectF vr(mapToScene(viewport()->rect()).boundingRect());
 	_res = _map->resolution(vr);
 	_mapScale->setResolution(_res);
+	if (_coordinates->isVisible() && underMouse())
+		_coordinates->setCoordinates(_map->xy2ll(pos));
 }
 
 PathItem *MapView::addTrack(const Track &track)
@@ -423,6 +431,8 @@ void MapView::setCoordinatesFormat(CoordinatesFormat format)
 
 	_coordinatesFormat = format;
 
+	_coordinates->setFormat(_coordinatesFormat);
+
 	for (int i = 0; i < _waypoints.count(); i++)
 		_waypoints.at(i)->setToolTipFormat(_units, _coordinatesFormat);
 	for (int i = 0; i < _routes.count(); i++)
@@ -624,8 +634,10 @@ void MapView::clear()
 	_waypoints.clear();
 
 	_scene->removeItem(_mapScale);
+	_scene->removeItem(_coordinates);
 	_scene->clear();
 	_scene->addItem(_mapScale);
+	_scene->addItem(_coordinates);
 
 	_palette.reset();
 
@@ -736,6 +748,12 @@ void MapView::showPOILabels(bool show)
 	updatePOIVisibility();
 }
 
+void MapView::showCoordinates(bool show)
+{
+	_coordinates->setVisible(show);
+	setMouseTracking(show);
+}
+
 void MapView::setPOIOverlap(bool overlap)
 {
 	_overlapPOIs = overlap;
@@ -880,11 +898,18 @@ void MapView::resizeEvent(QResizeEvent *event)
 
 void MapView::paintEvent(QPaintEvent *event)
 {
-	QPointF scenePos = mapToScene(rect().bottomRight() + QPoint(
+	QPointF scaleScenePos = mapToScene(rect().bottomRight() + QPoint(
 	  -(SCALE_OFFSET + _mapScale->boundingRect().width()),
 	  -(SCALE_OFFSET + _mapScale->boundingRect().height())));
-	if (_mapScale->pos() != scenePos && !_plot)
-		_mapScale->setPos(scenePos);
+	if (_mapScale->pos() != scaleScenePos && !_plot)
+		_mapScale->setPos(scaleScenePos);
+
+	if (_coordinates->isVisible()) {
+		QPointF coordinatesScenePos = mapToScene(rect().bottomLeft()
+		  + QPoint(COORDINATES_OFFSET, -COORDINATES_OFFSET));
+		if (_coordinates->pos() != coordinatesScenePos && !_plot)
+			_coordinates->setPos(coordinatesScenePos);
+	}
 
 	QGraphicsView::paintEvent(event);
 }
@@ -902,6 +927,20 @@ void MapView::scrollContentsBy(int dx, int dy)
 	}
 }
 
+void MapView::mouseMoveEvent(QMouseEvent *event)
+{
+	if (_coordinates->isVisible())
+		_coordinates->setCoordinates(_map->xy2ll(mapToScene(event->pos())));
+
+	QGraphicsView::mouseMoveEvent(event);
+}
+
+void MapView::leaveEvent(QEvent *event)
+{
+	_coordinates->setCoordinates(Coordinates());
+	QGraphicsView::leaveEvent(event);
+}
+
 void MapView::useOpenGL(bool use)
 {
 	_opengl = use;

src/GUI/mapview.h

@@ -23,6 +23,7 @@ class TrackItem;
 class RouteItem;
 class WaypointItem;
 class ScaleItem;
+class CoordinatesItem;
 class PathItem;
 class GraphItem;
 class AreaItem;
@@ -75,6 +76,7 @@ public slots:
 	void showWaypoints(bool show);
 	void showRouteWaypoints(bool show);
 	void showMarkers(bool show);
+	void showCoordinates(bool show);
 	void clearMapCache();
 	void setCoordinatesFormat(CoordinatesFormat format);
 	void setDevicePixelRatio(qreal deviceRatio, qreal mapRatio);
@@ -108,9 +110,12 @@ private:
 	void resizeEvent(QResizeEvent *event);
 	void paintEvent(QPaintEvent *event);
 	void scrollContentsBy(int dx, int dy);
+	void mouseMoveEvent(QMouseEvent *event);
+	void leaveEvent(QEvent *event);
 
 	QGraphicsScene *_scene;
 	ScaleItem *_mapScale;
+	CoordinatesItem *_coordinates;
 	QList<TrackItem*> _tracks;
 	QList<RouteItem*> _routes;
 	QList<WaypointItem*> _waypoints;

src/GUI/settings.h

@@ -36,6 +36,8 @@
 #define CURRENT_MAP_SETTING               "map"
 #define SHOW_MAP_SETTING                  "show"
 #define SHOW_MAP_DEFAULT                  true
+#define SHOW_COORDINATES_SETTING          "coordinates"
+#define SHOW_COORDINATES_DEFAULT          false
 
 #define POI_SETTINGS_GROUP                "POI"
 #define OVERLAP_POI_SETTING               "overlap"