[Qt] Add pitch property to QML MapboxGL Type

platform/qt/include/qquickmapboxgl.hpp

@@ -30,6 +30,7 @@ class Q_DECL_EXPORT QQuickMapboxGL : public QQuickFramebufferObject
     // MapboxGL QML Type interface.
     Q_PROPERTY(QString style READ style WRITE setStyle NOTIFY styleChanged)
     Q_PROPERTY(qreal bearing READ bearing WRITE setBearing NOTIFY bearingChanged)
+    Q_PROPERTY(qreal pitch READ pitch WRITE setPitch NOTIFY pitchChanged)
 
 public:
     QQuickMapboxGL(QQuickItem *parent = 0);
@@ -74,15 +75,19 @@ public:
     void setBearing(qreal bearing);
     qreal bearing() const;
 
+    void setPitch(qreal pitch);
+    qreal pitch() const;
+
     QPointF swapPan();
 
     enum SyncState {
-        NothingNeedsSync = 0x00,
-        ZoomNeedsSync    = 0x01,
-        CenterNeedsSync  = 0x02,
-        StyleNeedsSync   = 0x04,
-        PanNeedsSync     = 0x08,
-        BearingNeedsSync = 0x16,
+        NothingNeedsSync = 0,
+        ZoomNeedsSync    = 1 << 0,
+        CenterNeedsSync  = 1 << 1,
+        StyleNeedsSync   = 1 << 2,
+        PanNeedsSync     = 1 << 3,
+        BearingNeedsSync = 1 << 4,
+        PitchNeedsSync   = 1 << 5,
     };
 
     int swapSyncState();
@@ -102,6 +107,7 @@ signals:
 
     void styleChanged();
     void bearingChanged(qreal angle);
+    void pitchChanged(qreal angle);
 
 public slots:
     void setCenter(const QGeoCoordinate &center);
@@ -118,6 +124,7 @@ private:
 
     QString m_style;
     qreal m_bearing = 0;
+    qreal m_pitch = 0;
 
     int m_syncState = NothingNeedsSync;
 };

platform/qt/src/qquickmapboxgl.cpp

@@ -1,5 +1,7 @@
 #include "qquickmapboxglrenderer.hpp"
 
+#include <mbgl/util/constants.hpp>
+
 #include <QQuickMapboxGL>
 
 #include <QQuickItem>
@@ -209,6 +211,27 @@ qreal QQuickMapboxGL::bearing() const
     return m_bearing;
 }
 
+void QQuickMapboxGL::setPitch(qreal angle)
+{
+    angle = qMin(qMax(0., angle), mbgl::util::PITCH_MAX * mbgl::util::RAD2DEG);
+
+    if (m_pitch == angle) {
+        return;
+    }
+
+    m_pitch = angle;
+
+    m_syncState |= PitchNeedsSync;
+    update();
+
+    emit pitchChanged(m_pitch);
+}
+
+qreal QQuickMapboxGL::pitch() const
+{
+    return m_pitch;
+}
+
 QPointF QQuickMapboxGL::swapPan()
 {
     QPointF oldPan = m_pan;

platform/qt/src/qquickmapboxglrenderer.cpp

@@ -74,4 +74,8 @@ void QQuickMapboxGLRenderer::synchronize(QQuickFramebufferObject *item)
     if (syncStatus & QQuickMapboxGL::BearingNeedsSync) {
         m_map->setBearing(quickMap->bearing());
     }
+
+    if (syncStatus & QQuickMapboxGL::PitchNeedsSync) {
+        m_map->setPitch(quickMap->pitch());
+    }
 }