Fix caching to only invalidate when the size is different

2 files changed, 8 insertions, 4 deletions

diff --git a/sigmodr/widgets/mapeditor/WorldMapPlacement.cpp b/sigmodr/widgets/mapeditor/WorldMapPlacement.cpp
index 68b0059e..411dae9d 100644
--- a/sigmodr/widgets/mapeditor/WorldMapPlacement.cpp
+++ b/sigmodr/widgets/mapeditor/WorldMapPlacement.cpp
@@ -24,12 +24,16 @@
 using namespace Sigmodr::Widgets;
 
 bool WorldMapPlacement::m_cacheGood = false;
+QSize WorldMapPlacement::m_size;
 QList<QPolygon> WorldMapPlacement::m_polygons;
 
-WorldMapPlacement::WorldMapPlacement(const QSize& size) :
-        m_size(size)
+WorldMapPlacement::WorldMapPlacement(const QSize& size)
 {
-    m_cacheGood = false;
+    if (m_size != size)
+    {
+        m_cacheGood = false;
+        m_size = size;
+    }
 }
 
 void WorldMapPlacement::addRect(const QRect& rect)
diff --git a/sigmodr/widgets/mapeditor/WorldMapPlacement.h b/sigmodr/widgets/mapeditor/WorldMapPlacement.h
index fda9622f..6aa9ccff 100644
--- a/sigmodr/widgets/mapeditor/WorldMapPlacement.h
+++ b/sigmodr/widgets/mapeditor/WorldMapPlacement.h
@@ -43,7 +43,7 @@ class SIGMODRWIDGETS_NO_EXPORT WorldMapPlacement
         static void invalidateCache();
     private:
         static bool m_cacheGood;
-        QSize m_size;
+        static QSize m_size;
         QList<QRect> m_rects;
         static QList<QPolygon> m_polygons;
         QPolygon m_polygon;