Differential D2282 Diff 5489 examples/cpp/custom-layers/main.cpp

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examples/cpp/custom-layers/main.cpp

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24 24​
25class MyPaintLayer : public QObject, public LayerInterface 25​class MyPaintLayer : public QObject, public LayerInterface
26{ 26​{
27public: 27​public:
28 // Constructor 28​ // Constructor
29 MyPaintLayer(MarbleWidget* widget); 29​ MyPaintLayer(MarbleWidget* widget);
30 30​
31 // Implemented from LayerInterface 31​ // Implemented from LayerInterface
32 virtual QStringList renderPosition() const; 32​ RenderPositions renderPositions() const override;
33 33​
34 // Implemented from LayerInterface 34​ // Implemented from LayerInterface
35 virtual bool render( GeoPainter *painter, ViewportParams *viewport, 35​ bool render(GeoPainter *painter, ViewportParams *viewport,
36 const QString& renderPos = "NONE", GeoSceneLayer * layer = 0 ); 36​ RenderPosition renderPos, GeoSceneLayer *layer) override;
37 37​
38 // Overriding QObject 38​ // Overriding QObject
39 virtual bool eventFilter(QObject *obj, QEvent *event); 39​ virtual bool eventFilter(QObject *obj, QEvent *event);
40 40​
41 static GeoDataCoordinates approximate(const GeoDataCoordinates &base, qreal angle, qreal dist); 41​ static GeoDataCoordinates approximate(const GeoDataCoordinates &base, qreal angle, qreal dist);
42 42​
43private: 43​private:
44 MarbleWidget* m_widget; 44​ MarbleWidget* m_widget;
45 45​
46​ QHash<RenderPosition, QString> m_renderPositions;
46 int m_index; 47​ int m_index;
47}; 48​};
48 49​
49MyPaintLayer::MyPaintLayer(MarbleWidget* widget) : m_widget(widget), m_index(0) 50​MyPaintLayer::MyPaintLayer(MarbleWidget* widget) : m_widget(widget), m_index(0)
50{ 51​{
51 // nothing to do ​
52} ​
53 ​
54QStringList MyPaintLayer::renderPosition() const ​
55{ ​
56 // We will paint in exactly one of the following layers. 52​ // We will paint in exactly one of the following layers.
57 // The current one can be changed by pressing the '+' key 53​ // The current one can be changed by pressing the '+' key
58 QStringList layers = QStringList() << "SURFACE" << "HOVERS_ABOVE_SURFACE"; 54​ m_renderPositions.insert(SurfaceRenderPosition, "SURFACE");
59 layers << "ORBIT" << "USER_TOOLS" << "STARS"; 55​ m_renderPositions.insert(HoversAboveSurfaceRenderPosition, "HOVERS_ABOVE_SURFACE");
56​ m_renderPositions.insert(OrbitRenderPosition, "ORBIT");
57​ m_renderPositions.insert(UserToolsRenderPosition, "USER_TOOLS");
58​ m_renderPositions.insert(StarsRenderPosition, "STARS");
60 59​
61 int index = m_index % layers.size(); 60​}
62 return QStringList() << layers.at(index); 61​
62​RenderPositions MyPaintLayer::renderPositions() const
63​{
64​ int index = m_index % m_renderPositions.size();
65​ return m_renderPositions.keys().at(index);
63} 66​}
64 67​
65bool MyPaintLayer::eventFilter(QObject *obj, QEvent *event) 68​bool MyPaintLayer::eventFilter(QObject *obj, QEvent *event)
66{ 69​{
67 Q_UNUSED(obj) 70​ Q_UNUSED(obj)
68 71​
69 // Adjust the current layer when '+' is pressed 72​ // Adjust the current layer when '+' is pressed
70 if (event->type() == QEvent::KeyPress) 73​ if (event->type() == QEvent::KeyPress)
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83{ 86​{
84 // This is just a rough estimation that ignores projections. 87​ // This is just a rough estimation that ignores projections.
85 // It only works for short distances. Don't use in real code. 88​ // It only works for short distances. Don't use in real code.
86 GeoDataCoordinates::Unit deg = GeoDataCoordinates::Degree; 89​ GeoDataCoordinates::Unit deg = GeoDataCoordinates::Degree;
87 return GeoDataCoordinates ( base.longitude(deg) + 1.5 * dist * sin(angle), 90​ return GeoDataCoordinates ( base.longitude(deg) + 1.5 * dist * sin(angle),
88 base.latitude(deg) + dist * cos(angle), 0.0, deg); 91​ base.latitude(deg) + dist * cos(angle), 0.0, deg);
89} 92​}
90 93​
91bool MyPaintLayer::render( GeoPainter *painter, ViewportParams *viewport, 94​bool MyPaintLayer::render(GeoPainter *painter, ViewportParams *viewport,
92 const QString& renderPos, GeoSceneLayer * layer ) 95​ RenderPosition renderPos, GeoSceneLayer * layer)
93{ 96​{
94 Q_UNUSED(viewport) 97​ Q_UNUSED(viewport)
95 Q_UNUSED(renderPos) 98​ Q_UNUSED(renderPos)
96 Q_UNUSED(layer) 99​ Q_UNUSED(layer)
97 100​
98 // Have window title reflect the current paint layer 101​ // Have window title reflect the current paint layer
99 m_widget->setWindowTitle(renderPosition().first()); 102​ m_widget->setWindowTitle(m_renderPositions.value(renderPos));
100 GeoDataCoordinates home(8.4, 48.0, 0.0, GeoDataCoordinates::Degree); 103​ GeoDataCoordinates home(8.4, 48.0, 0.0, GeoDataCoordinates::Degree);
101 QTime now = QTime::currentTime(); 104​ QTime now = QTime::currentTime();
102 105​
103 painter->setRenderHint(QPainter::Antialiasing, true); 106​ painter->setRenderHint(QPainter::Antialiasing, true);
104 107​
105 // Large circle built by 60 small circles 108​ // Large circle built by 60 small circles
106 painter->setPen( QPen(QBrush(QColor::fromRgb(255,255,255,200)), 3.0, Qt::SolidLine, Qt::RoundCap ) ); 109​ painter->setPen( QPen(QBrush(QColor::fromRgb(255,255,255,200)), 3.0, Qt::SolidLine, Qt::RoundCap ) );
107 for (int i=0; i<60; ++i) 110​ for (int i=0; i<60; ++i)
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