From f550a9a873eeb83ce8f1783b7e047717043db77e Mon Sep 17 00:00:00 2001
From: Niels <niels.kummerfeldt@tu-harburg.de>
Date: Wed, 21 Jul 2010 21:18:51 +0200
Subject: [PATCH] display direction from gpsd

---
 gpslayer.cpp | 43 ++++++++++++++++++++++++++++++++++++++++---
 gpslayer.h   |  4 ++++
 2 files changed, 44 insertions(+), 3 deletions(-)

diff --git a/gpslayer.cpp b/gpslayer.cpp
index 31ad47e..4c3ab27 100644
--- a/gpslayer.cpp
+++ b/gpslayer.cpp
@@ -27,10 +27,16 @@
 GpsLayer::GpsLayer(MapWidget *map) :
     AbstractLayer(map),
     m_gps(new GpsClient(this)),
-    m_pos(QPointF(9.8, 54))
+    m_pos(QPointF(9.8, 54)),
+    m_alt(0),
+    m_track(0),
+    m_speed(0)
 {
     setVisible(false);
     connect(m_gps, SIGNAL(position(QPointF)), this, SLOT(position(QPointF)));
+    connect(m_gps, SIGNAL(altitude(qreal)), this, SLOT(altitude(qreal)));
+    connect(m_gps, SIGNAL(direction(qreal)), this, SLOT(direction(qreal)));
+    connect(m_gps, SIGNAL(speed(qreal)), this, SLOT(speed(qreal)));
     connect(m_gps, SIGNAL(connected()), this, SLOT(connected()));
     connect(m_gps, SIGNAL(disconnected()), this, SLOT(disconnected()));
     m_gps->connectGps();
@@ -55,10 +61,17 @@ void GpsLayer::paint(QPainter *painter)
 {
     QPoint pos = map()->geo2screen(m_pos.x(), m_pos.y());
 
-    painter->drawPoint(pos);
     painter->setRenderHint(QPainter::Antialiasing, true);
-    painter->setPen(QPen(QBrush(QColor(0, 0, 255, 110)), 4));
+    painter->setPen(QPen(QColor(0, 0, 255, 110), 4));
     painter->drawEllipse(pos, 8, 8);
+
+    painter->setPen(QPen(QColor(0, 0, 255, 210), 2, Qt::SolidLine, Qt::RoundCap, Qt::MiterJoin));
+    painter->translate(pos);
+    painter->rotate(m_track);
+    painter->drawLine(QPoint(4, 3), QPoint(0, -7));
+    painter->drawLine(QPoint(-4, 3), QPoint(0, -7));
+    painter->drawLine(QPoint(4, 3), QPoint(0, 0));
+    painter->drawLine(QPoint(-4, 3), QPoint(0, 0));
 }
 
 void GpsLayer::position(const QPointF &pos)
@@ -69,6 +82,30 @@ void GpsLayer::position(const QPointF &pos)
     }
 }
 
+void GpsLayer::altitude(qreal alt)
+{
+    m_alt = alt;
+    if (isVisible()) {
+        map()->update();
+    }
+}
+
+void GpsLayer::direction(qreal track)
+{
+    m_track = track;
+    if (isVisible()) {
+        map()->update();
+    }
+}
+
+void GpsLayer::speed(qreal speed)
+{
+    m_speed = speed;
+    if (isVisible()) {
+        map()->update();
+    }
+}
+
 void GpsLayer::connected()
 {
     setVisible(true);
diff --git a/gpslayer.h b/gpslayer.h
index b7d7f9f..cbce789 100644
--- a/gpslayer.h
+++ b/gpslayer.h
@@ -40,12 +40,16 @@ protected:
 
 private slots:
     void position(const QPointF &pos);
+    void altitude(qreal alt);
+    void direction(qreal track);
+    void speed(qreal speed);
     void connected();
     void disconnected();
 
 private:
     GpsClient *m_gps;
     QPointF m_pos;
+    qreal m_alt, m_track, m_speed;
 
 };