Reduce height of rows in TreeView

[jeffb]

I would like to reduce the height of rows in a TreeView below the default, but something is preventing me from getting the height to where I would like it to be. Here is my test program:

import gi
gi.require_version('Gtk', '3.0')
gi.require_version('GLib', '2.0')
from gi.repository import Gtk, GLib

class Tester(Gtk.Window):
    def __init__(self):
        super().__init__()

        model = Gtk.ListStore(str)
        model.append(('hanging text, first value',))
        model.append(('second value',))
        model.append(('third value',))

        cell = Gtk.CellRendererText()
        cell.props.height = 19
        cell.props.ypad = 0 # default value is 2

        col = Gtk.TreeViewColumn()
        col.pack_start(cell, True)
        col.set_attributes(cell, text=0)
        col.set_expand(True)

        treeview = Gtk.TreeView()
        treeview.set_model(model)
        treeview.set_headers_visible(False)
        treeview.append_column(col)

        self.set_default_size(300, 400)
        self.connect_after('destroy', self.on_destroy)
        self.add(treeview)
        self.show_all()

    def on_destroy(self, obj):
        loop.quit()


tester = Tester()

loop = GLib.MainLoop()
loop.run()

If I drop the height below 19, I lose the descender for the “g”, but there are still 4-5 pixels above the tallest letter. I tried fiddling with vertical alignment. I used the debugger to look for some css that might be relevant. Does anyone know how I can liberate that space?

[Jabiertxof_Foxtreiba (Jabiertxof Foxtreibaj)]

Ass basic test you can test this in CSS inspector?
treeview * {
margin:0;
padding:0;
}

[jeffb]

Thanks for your suggestion.

These parameters seem to affect only the header. They have no effect with my test program as it does not display headers.