Legge til støtte for zoom med CTRL + scroll

soitool/inline_editable_soi_view.py

@@ -172,6 +172,14 @@ class ProxyLabelWithCustomQPrintText(QGraphicsProxyWidget):
 class InlineEditableSOIView(QScrollArea):
     """Widget that allows for "inline" editing of an SOI. Also prints to PDF.
 
+    ## Important note about QScrollArea superclass
+
+    This class was originally derived from QScrollArea for scrolling, but it
+    turns out QGrapihcsView has it's own scrolling. We are using
+    QGraphicsView's scrolling instead. This class does not need to inherit from
+    QScrollArea, but because of time pressure we have decided not to refactor
+    this.
+
     Parameters
     ----------
     soi : soitool.soi.SOI
@@ -228,6 +236,10 @@ class InlineEditableSOIView(QScrollArea):
         self.soi.add_new_module_listener(self.ensure_proxies)
         self.soi.add_update_property_listener(self.update_pages)
 
+        # Initial position of scrollbars should be upper-left
+        self.view.verticalScrollBar().setValue(1)
+        self.view.horizontalScrollBar().setValue(1)
+
     def is_widget_in_scene(self, widget):
         """Indicate wether given widget already has a proxy in the scene."""
         for proxy in self.proxies: