[qt] Render asynchronously

platform/qt/src/qmapboxgl_map_observer.cpp

@@ -0,0 +1,95 @@
+#include "qmapboxgl_map_observer.hpp"
+
+#include "qmapboxgl_p.hpp"
+
+QMapboxGLMapObserver::QMapboxGLMapObserver(QMapboxGLPrivate *d)
+    : d_ptr(d)
+{
+}
+
+QMapboxGLMapObserver::~QMapboxGLMapObserver()
+{
+}
+
+void QMapboxGLMapObserver::onCameraWillChange(mbgl::MapObserver::CameraChangeMode mode)
+{
+    if (mode == mbgl::MapObserver::CameraChangeMode::Immediate) {
+        emit mapChanged(QMapboxGL::MapChangeRegionWillChange);
+    } else {
+        emit mapChanged(QMapboxGL::MapChangeRegionWillChangeAnimated);
+    }
+}
+
+void QMapboxGLMapObserver::onCameraIsChanging()
+{
+    emit mapChanged(QMapboxGL::MapChangeRegionIsChanging);
+}
+
+void QMapboxGLMapObserver::onCameraDidChange(mbgl::MapObserver::CameraChangeMode mode)
+{
+    if (mode == mbgl::MapObserver::CameraChangeMode::Immediate) {
+        emit mapChanged(QMapboxGL::MapChangeRegionDidChange);
+    } else {
+        emit mapChanged(QMapboxGL::MapChangeRegionDidChangeAnimated);
+    }
+}
+
+void QMapboxGLMapObserver::onWillStartLoadingMap()
+{
+    emit mapChanged(QMapboxGL::MapChangeWillStartLoadingMap);
+}
+
+void QMapboxGLMapObserver::onDidFinishLoadingMap()
+{
+    emit mapChanged(QMapboxGL::MapChangeDidFinishLoadingMap);
+}
+
+void QMapboxGLMapObserver::onDidFailLoadingMap(std::exception_ptr)
+{
+    emit mapChanged(QMapboxGL::MapChangeDidFailLoadingMap);
+}
+
+void QMapboxGLMapObserver::onWillStartRenderingFrame()
+{
+    emit mapChanged(QMapboxGL::MapChangeWillStartRenderingFrame);
+}
+
+void QMapboxGLMapObserver::onDidFinishRenderingFrame(mbgl::MapObserver::RenderMode mode)
+{
+    if (mode == mbgl::MapObserver::RenderMode::Partial) {
+        emit mapChanged(QMapboxGL::MapChangeDidFinishRenderingFrame);
+    } else {
+        emit mapChanged(QMapboxGL::MapChangeDidFinishRenderingFrameFullyRendered);
+    }
+}
+
+void QMapboxGLMapObserver::onWillStartRenderingMap()
+{
+    emit mapChanged(QMapboxGL::MapChangeWillStartLoadingMap);
+}
+
+void QMapboxGLMapObserver::onDidFinishRenderingMap(mbgl::MapObserver::RenderMode mode)
+{
+    if (mode == mbgl::MapObserver::RenderMode::Partial) {
+        emit mapChanged(QMapboxGL::MapChangeDidFinishRenderingMap);
+    } else {
+        emit mapChanged(QMapboxGL::MapChangeDidFinishRenderingMapFullyRendered);
+    }
+}
+
+void QMapboxGLMapObserver::onDidFinishLoadingStyle()
+{
+    emit mapChanged(QMapboxGL::MapChangeDidFinishLoadingStyle);
+}
+
+void QMapboxGLMapObserver::onSourceChanged(mbgl::style::Source&)
+{
+    std::string attribution;
+    for (const auto& source : d_ptr->mapObj->getStyle().getSources()) {
+        // Avoid duplicates by using the most complete attribution HTML snippet.
+        if (source->getAttribution() && (attribution.size() < source->getAttribution()->size()))
+            attribution = *source->getAttribution();
+    }
+    emit copyrightsChanged(QString::fromStdString(attribution));
+    emit mapChanged(QMapboxGL::MapChangeSourceDidChange);
+}