If True, unmapped widgets are ignored when determining the size of the group
mode
Gtk.SizeGroupMode
r/w/en
The directions in which the size group affects the requested sizes of its component widgets
Signals
Name
Short Description
例子
代碼:
#!/usr/bin/env python3# Created by xiaosanyu at 16/7/21# section 131# # author: xiaosanyu# website: yuxiaosan.tk \# http://blog.csdn.net/a87b01c14# created: 16/7/21
TITLE = "SizeGroup"
DESCRIPTION = """
GtkSizeGroup provides a mechanism for grouping a number of
widgets together so they all request the same amount of space.
This is typically useful when you want a column of widgets to
have the same size, but you can't use a GtkTable widget.
Note that size groups only affect the amount of space requested,
not the size that the widgets finally receive. If you want the
widgets in a GtkSizeGroup to actually be the same size, you need
to pack them in such a way that they get the size they request
and not more. For example, if you are packing your widgets
into a table, you would not include the GTK_FILL flag.
"""import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk, Gdk, GdkPixbuf, GLib
color_options = ["Red", "Green", "Blue"]
dash_options = ["Solid", "Dashed", "Dotted"]
end_options = ["Square", "Round", "Double Arrow"]
classSizeGroupWindow(Gtk.Window):def__init__(self):
Gtk.Window.__init__(self, title="SizeGroup demo")
self.set_resizable(False)
vbox = Gtk.VBox(spacing=5)
self.add(vbox)
vbox.set_border_width(5)
size_group = Gtk.SizeGroup.new(Gtk.SizeGroupMode.HORIZONTAL)
# Create one frame holding color options
frame = Gtk.Frame.new("Color Options")
vbox.pack_start(frame, True, True, 0)
grid = Gtk.Grid()
grid.set_border_width(5)
grid.set_row_spacing(5)
grid.set_column_spacing(10)
frame.add(grid)
self.add_row(grid, 0, size_group, "_Foreground", color_options)
self.add_row(grid, 1, size_group, "_Background", color_options)
# And another frame holding line style options
frame = Gtk.Frame.new("Line Options")
vbox.pack_start(frame, False, False, 0)
grid = Gtk.Grid()
grid.set_border_width(5)
grid.set_row_spacing(5)
grid.set_column_spacing(10)
frame.add(grid)
self.add_row(grid, 0, size_group, "_Dashing", dash_options)
self.add_row(grid, 1, size_group, "_Line ends", end_options)
# And a check button to turn grouping on and off
check_button = Gtk.CheckButton.new_with_mnemonic("_Enable grouping")
vbox.pack_start(check_button, False, False, 0)
check_button.set_active(True)
check_button.connect("toggled", self.toggle_grouping, size_group)
@staticmethoddefcreate_combo_box(strings):
combo_box = Gtk.ComboBoxText()
for s in strings:
combo_box.append_text(s)
combo_box.set_active(0)
return combo_box
defadd_row(self, grid, row, size_group, label_text, options):
label = Gtk.Label.new_with_mnemonic(label_text)
label.set_halign(Gtk.Align.START)
label.set_valign(Gtk.Align.BASELINE)
label.set_hexpand(True)
grid.attach(label, 0, row, 1, 1)
combo_box = self.create_combo_box(options)
label.set_mnemonic_widget(combo_box)
combo_box.set_halign(Gtk.Align.END)
combo_box.set_valign(Gtk.Align.BASELINE)
size_group.add_widget(combo_box)
grid.attach(combo_box, 1, row, 1, 1)
@staticmethoddeftoggle_grouping(check_button, size_group):# GTK_SIZE_GROUP_NONE is not generally useful, but is useful# here to show the effect of GTK_SIZE_GROUP_HORIZONTAL by# contrast.if check_button.get_active():
new_mode = Gtk.SizeGroupMode.HORIZONTAL
else:
new_mode = Gtk.SizeGroupMode.NONE
size_group.set_mode(new_mode)
defmain():
win = SizeGroupWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()
if __name__ == "__main__":
main()