Hi,
Working on a "bug" in a gtk program for a while. We have a window with
multiple textviews one after the other strung together. Built against
gtk2, things appear fine. I'm trying to upgrade to gtk3, and running
into a problem. The following python-gtk programs demonstrate.
In GTK3, the more lines that are in the textview, the more extra blank
space appears after each textview when it is initially created. And as
soon as we resize the window, the extra space disappears. It is this
phantom "extra space" that we need to get rid of. Any ideas what is wrong?
I included the gtk2 version of this code. It does not have the phantom
space on initial creation.
Thanks for reading,
Matt
#!/usr/bin/env python
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
win = Gtk.Window()
win.connect("destroy", Gtk.main_quit)
win.set_default_size(300, 500)
win.show_all()
scrolledwindow = Gtk.ScrolledWindow()
scrolledwindow.set_border_width(10)
scrolledwindow.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.ALWAYS)
win.add(scrolledwindow)
scrolledwindow.show()
vbox = Gtk.VBox()
scrolledwindow.add(vbox)
vbox.show()
def AddTextView(i):
global vbox;
textview = Gtk.TextView()
textbuffer = textview.get_buffer()
textbuffer.set_text("This is some text inside of a Gtk.TextView. In GTK3, the
more lines that are here, the more extra blank space appears after the textview when it
is initially created. And as soon as we resize the window, the extra space disappears. If
we expand the window a lot, the textviews are laid out tightly, and extra gray space
appears at the bottom of the window. The same code on gtk2 behaves differently. The
textviews are packed nicely together if they have lots of text. If they only have a line
or two, then there are gaps. But if we expand the the window a lot, then gaps appear
between the textviews instead of at the end. Our problem is with GTK3. How do we
eliminate the blanks-between-textviews upon initial load?")
textview.set_wrap_mode(Gtk.WrapMode.WORD)
textview.set_hexpand(True) # This is False by default
vbox.add(textview)
textview.show()
for i in range(6): AddTextView(i)
Gtk.main()
------------------------------------------------------------------------------------------
THE GTK2 VERSION OF THIS PROGRAM IS AS FOLLOWS:
#!/usr/bin/env python
import pygtk
pygtk.require('2.0')
import gtk
win = gtk.Window()
win.connect("destroy", gtk.main_quit)
win.set_default_size(300, 500)
win.show_all()
scrolledwindow = gtk.ScrolledWindow()
scrolledwindow.set_border_width(10)
scrolledwindow.set_policy(gtk.POLICY_NEVER, gtk.POLICY_ALWAYS)
win.add(scrolledwindow)
scrolledwindow.show()
vbox = gtk.VBox()
scrolledwindow.add_with_viewport(vbox)
vbox.show()
def AddTextView(i):
global vbox;
textview = gtk.TextView()
textbuffer = textview.get_buffer()
textbuffer.set_text("This is some text inside of a Gtk.TextView. In GTK3, the
more lines that are here, the more extra blank space appears after the textview when it
is initially created. And as soon as we resize the window, the extra space disappears. If
we expand the window a lot, the textviews are laid out tightly, and extra gray space
appears at the bottom of the window. The same code on gtk2 behaves differently. The
textviews are packed nicely together if they have lots of text. If they only have a line
or two, then there are gaps. But if we expand the the window a lot, then gaps appear
between the textviews instead of at the end. Our problem is with GTK3. How do we
eliminate the blanks-between-textviews upon initial load?")
textview.set_wrap_mode(gtk.WRAP_WORD)
#textview.set_hexpand(True) # This is True by default
vbox.add(textview)
textview.show()
for i in range(6): AddTextView(i)
gtk.main()
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