Preload the tiles for the zoomed out version of the map.

This eats more network, but helps to avoid the impression that the
magnifying glass does not work.

1 files changed, 4 insertions, 0 deletions

diff --git a/lightmaps/lightmaps.cpp b/lightmaps/lightmaps.cpp
index 804bee2..bc9798c 100644
--- a/lightmaps/lightmaps.cpp
+++ b/lightmaps/lightmaps.cpp
@@ -255,6 +255,7 @@ public:
         m_normalMap->latitude = lat;
         m_normalMap->longitude = lng;
         m_normalMap->invalidate();
+        m_largeMap->invalidate();
     }
 
 public slots:
@@ -286,6 +287,9 @@ protected:
         m_normalMap->width = width();
         m_normalMap->height = height();
         m_normalMap->invalidate();
+        m_largeMap->width = m_normalMap->width * 2;
+        m_largeMap->height = m_normalMap->height * 2;
+        m_largeMap->invalidate();
     }
 
     void paintEvent(QPaintEvent *event) {