Currently (v3.6.3), the text viewer is updated via the "on element change" callback wh

This looked like a solution: <a href="https://stackoverflow.com/questions/68991455

Keep text viewer position when changing properties about novelibre HOT 2 CLOSED

peter88213 commented on August 18, 2024

Keep text viewer position when changing properties

from novelibre.

Comments (2)

peter88213 commented on August 18, 2024

This looked like a solution:
https://stackoverflow.com/questions/68991455/how-to-see-how-far-a-text-widget-is-currently-scrolled-in-tkinter

However, this doesn't work for the ContentsViewer class:

    def refresh(self, event=None, *args):
        """Reload the text to view."""
        if self._mdl.prjFile is None:
            return

        if self._parent.winfo_manager():
            position = self.yview()[0]
            self.view_text()
            try:
                self.yview_moveto(position)
            except:
                pass

It looks like the previously read position is not precisely set when written, so there is an offset that increases as the y position increases.

This also doesn't work:

    def refresh(self, event=None, *args):
        """Reload the text to view."""
        if self._mdl.prjFile is None:
            return

        if self._parent.winfo_manager():
            position = self.vbar.get()
            self.view_text()
            try:

                self.vbar.set(position)
            except:
                pass

from novelibre.

peter88213 commented on August 18, 2024

Since the text box content cannot be read as (text, tag) tuples, there is no easy way to check whether the view_text() method can be skipped when refreshing the contents viewer.

from novelibre.

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