TileCanvas: Fix scaling change not updating the canvas

Author: LoxoSoftware

tilecanvas.cpp

@@ -92,10 +92,10 @@ void TileCanvas::Redraw()
     image.setColorTable(project.tileset.tiles[tile_id].colorTable());
 
     //Check if an update is necessary
-    if (image == last_image)
+    if (image == last_image && scaling == last_scaling)
         return;
     else
-        last_image= image;
+        last_image= image, last_scaling= scaling;
 
     scene.clear();
     QPixmap pix;

tilecanvas.h

@@ -67,6 +67,7 @@ class TileCanvas  : public AbstractCanvas
     QBrush brush;
     QPen pen;
     int scaling= 20;
+    int last_scaling= scaling;
     Qt::MouseButton mouse_down_button= Qt::NoButton;
     bool mouse_has_moved= false;
     QPointF mouse_last_pos;