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#!/usr/bin/env python
# -*- Mode: Python; py-indent-offset: 4 -*-
# vim: tabstop=4 shiftwidth=4 expandtab
#
# Copyright (C) 2010 Red Hat, Inc., John (J5) Palmieri <johnp@redhat.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
# USA
title = "Color Selector"
description = """
GtkColorSelection lets the user choose a color. GtkColorSelectionDialog is
a prebuilt dialog containing a GtkColorSelection.
"""
# See FIXME's
is_fully_bound = False
from gi.repository import Gtk, Gdk
class ColorSelectorApp:
def __init__(self):
# FIXME: we should allow Gdk.Color to be allocated without parameters
# Also color doesn't seem to work
self.color = Gdk.Color(0, 65535, 0)
self.window = Gtk.Window()
self.window.set_title('Color Selection')
self.window.set_border_width(8)
self.window.connect('destroy', lambda w: Gtk.main_quit())
vbox = Gtk.VBox(homogeneous = False,
spacing = 8)
vbox.set_border_width(8)
self.window.add(vbox)
# create color swatch area
frame = Gtk.Frame()
frame.set_shadow_type(Gtk.ShadowType.IN)
vbox.pack_start(frame, True, True, 0)
self.da = Gtk.DrawingArea()
self.da.connect('expose_event', self.expose_event_cb)
# set a minimum size
self.da.set_size_request(200, 200)
# set the color
self.da.modify_bg(Gtk.StateType.NORMAL, self.color)
frame.add(self.da)
alignment = Gtk.Alignment(xalign=1.0,
yalign=0.5,
xscale=0.0,
yscale=0.0)
button = Gtk.Button(label='_Change the above color',
use_underline=True)
alignment.add(button)
vbox.pack_start(alignment, False, False, 0)
button.connect('clicked', self.change_color_cb)
self.window.show_all()
def expose_event_cb(self, widget, event):
window = widget.get_window()
if window:
style = widget.get_style()
x = event.expose.area.x
y = event.expose.area.y
width = event.expose.area.width
height = event.expose.area.height
"""
Gdk.draw_rectangle(window,
# FIXME: accessing style attribute segfaults
style.bg_gc[Gtk.StateType.NORMAL],
True,
event.expose.area.x, event.expose.area.y,
event.expose.area.width, event.expose.area.height)
"""
return True
def change_color_cb(self, button):
dialog = Gtk.ColorSelectionDialog(title='Changing color')
dialog.set_transient_for(self.window)
colorsel = dialog.get_color_selection()
colorsel.set_previous_color(self.color)
colorsel.set_current_color(self.color)
colorsel.set_has_palette(True)
response = dialog.run()
if response == Gtk.ResponseType.OK:
self.color = colorsel.get_current_color()
self.da.modify_bg(Gtk.StateType.NORMAL, self.color)
dialog.destroy()
def main(demoapp=None):
app = ColorSelectorApp()
Gtk.main()
if __name__ == '__main__':
main()
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