Do not center on new pages (preserve current position instead).

pixelocr/gui/pageview.py

@@ -105,6 +105,3 @@ class PageView(QGraphicsView):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.setFrameShape(self.NoFrame)
-
-    def centerOnPage(self, pageItem):
-        self.centerOn(pageItem)

pixelocr/gui/window.py

@@ -44,7 +44,6 @@ class MainWindow(QMainWindow):
         self.setCentralWidget(centralWidget)
         self.pageScene = PageScene(self)
         self.page = PageView(self.pageScene, centralWidget)
-        self.pageScene.pageItemChanged.connect(self.page.centerOnPage)
         self.glyphEdit = GlyphEdit(centralWidget)
         self.glyphEdit.glyphEntered.connect(self.glyphEntered)
         self.glyphEdit.glyphEntered.connect(self.pageScene.clearHighlight)