misc: fix svg rendering when not scaled

Change-Id: Icf2aa37bd9f9ef3ba0845780504aaf680858c3bd

src/commoncomponents/ResponsiveImage.qml

@@ -61,11 +61,12 @@ Image {
     }
 
     function setSourceSize() {
+        if (ScreenInfo.getDevicePixelRatio() === 1.0)
+            return
         if (isSvg) {
-            sourceSize = Qt.size(0, 0)
+            sourceSize = undefined
             sourceSize = Qt.size(width, height)
-        }
-        else
+        } else
             sourceSize = undefined
     }
 

src/mainapplication.h

@@ -50,6 +50,10 @@ public:
             Q_EMIT devicePixelRatioChanged();
         }
     }
+    Q_INVOKABLE double getDevicePixelRatio()
+    {
+        return devicePixelRatio_;
+    }
 
 Q_SIGNALS:
     void devicePixelRatioChanged();