Fix logic for non retina screens.

Related to #10

src/main.cpp

@@ -241,8 +241,11 @@ int main(int argc, char *argv[])
     // tiles in chromium. This only happens on OSX since on other platforms
     // we can use the GPU to transfer tiles directly.
     // See more discussion in: https://github.com/plexinc/plex-media-player/issues/10
+    // The number of pixels here are REAL pixels, the code in webview.qml will compensate
+    // for a higher DevicePixelRatio
+    //
 #ifdef Q_OS_MAC
-    engine->rootContext()->setContextProperty("webMaxHeight", 720);
+    engine->rootContext()->setContextProperty("webMaxHeight", 1440);
 #else
     engine->rootContext()->setContextProperty("webMaxHeight", 0.0);
 #endif

src/ui/webview.qml

@@ -18,7 +18,7 @@ KonvergoWindow
   function getMaxHeightArg()
   {
     if (webMaxHeight > 0)
-      return "?maxHeight=" + webMaxHeight
+      return "?maxHeight=" + (webMaxHeight / Screen.devicePixelRatio);
     return ""
   }
 
@@ -45,8 +45,8 @@ KonvergoWindow
     transformOrigin: Item.TopLeft
     scale:
     {
-      var verticalScale = ((height * 2) / Screen.devicePixelRatio) / 720;
-      var horizontalScale = ((width * 2) / Screen.devicePixelRatio) / 1280;
+      var verticalScale = height / 720;
+      var horizontalScale = height / 1280;
 
       var desiredScale = Math.min(verticalScale, horizontalScale);
       var maximumScale = webMaxHeight ? (webMaxHeight / 720) : 10;