[pygi] colorselector demo

[John Palmieri <johnp src gnome org>]

commit e9ee2916494eb7654004925c1ee1e94f99b14f1a
Author: John (J5) Palmieri <johnp redhat com>
Date:   Tue Jun 8 16:55:26 2010 -0400

    colorselector demo

 demos/gtk-demo/demos/colorselector.py |  121 +++++++++++++++++++++++++++++++++
 1 files changed, 121 insertions(+), 0 deletions(-)
---
diff --git a/demos/gtk-demo/demos/colorselector.py b/demos/gtk-demo/demos/colorselector.py
new file mode 100644
index 0000000..ee94b64
--- /dev/null
+++ b/demos/gtk-demo/demos/colorselector.py
@@ -0,0 +1,121 @@
+#!/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():
+    app = ColorSelectorApp()
+    Gtk.main()
+
+if __name__ == '__main__':
+    main()