Control panel: include copyright/licensing info in about dialog

Ticket #6929: Include version number, copyright and license details
in "About XO" dialog.

2 files changed, 107 insertions, 6 deletions

diff --git a/src/controlpanel/model/aboutxo.py b/src/controlpanel/model/aboutxo.py
index 5d17cca..10815ef 100644
--- a/src/controlpanel/model/aboutxo.py
+++ b/src/controlpanel/model/aboutxo.py
@@ -75,3 +75,27 @@ def _read_file(path):
     else:
         _logger.debug('No information in file or directory: %s' % path)
         return None
+
+def get_license():
+    license_file = "/usr/share/licenses/common-licenses/GPL-2"
+    lang = os.environ['LANG']
+    if lang.endswith("UTF-8"):
+        lang = lang[:-6]
+
+    try_file = license_file + "." + lang
+    if os.path.isfile(try_file):
+        license_file = try_file
+    else:
+        try_file = license_file + "." + lang.split("_")[0]
+        if os.path.isfile(try_file):
+            license_file = try_file
+
+    try:
+        fd = open(license_file)
+        # remove 0x0c page breaks which can't be rendered in text views
+        license_text = fd.read().replace('\x0c', '')
+        fd.close()
+    except IOError:
+        license_text = _not_available
+    return license_text
+
diff --git a/src/controlpanel/view/aboutxo.py b/src/controlpanel/view/aboutxo.py
index 04833f0..783f7fc 100644
--- a/src/controlpanel/view/aboutxo.py
+++ b/src/controlpanel/view/aboutxo.py
@@ -1,3 +1,4 @@
+# coding=utf-8
 # Copyright (C) 2008, OLPC
 #
 # This program is free software; you can redistribute it and/or modify
@@ -17,6 +18,7 @@
 import gtk
 from gettext import gettext as _
 
+import config
 from sugar.graphics import style
 
 from controlpanel.sectionview import SectionView
@@ -36,17 +38,27 @@ class AboutXO(SectionView):
 
         self._group = gtk.SizeGroup(gtk.SIZE_GROUP_HORIZONTAL)
 
+        scrollwindow = gtk.ScrolledWindow()
+        scrollwindow.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
+        self.pack_start(scrollwindow, expand=True)
+        scrollwindow.show()
+
+        self._vbox = gtk.VBox()
+        scrollwindow.add_with_viewport(self._vbox)
+        self._vbox.show()
+
         self._setup_identity()
         self._setup_software()
+        self._setup_copyright()
 
     def _setup_identity(self):
         separator_identity = gtk.HSeparator()
-        self.pack_start(separator_identity, expand=False)
+        self._vbox.pack_start(separator_identity, expand=False)
         separator_identity.show()
 
         label_identity = gtk.Label(_('Identity'))
         label_identity.set_alignment(0, 0)
-        self.pack_start(label_identity, expand=False)
+        self._vbox.pack_start(label_identity, expand=False)
         label_identity.show()
         vbox_identity = gtk.VBox()
         vbox_identity.set_border_width(style.DEFAULT_SPACING * 2)
@@ -67,18 +79,18 @@ class AboutXO(SectionView):
         vbox_identity.pack_start(box_identity, expand=False)
         box_identity.show()
 
-        self.pack_start(vbox_identity, expand=False)
+        self._vbox.pack_start(vbox_identity, expand=False)
         vbox_identity.show()
     
 
     def _setup_software(self):   
         separator_software = gtk.HSeparator()
-        self.pack_start(separator_software, expand=False)
+        self._vbox.pack_start(separator_software, expand=False)
         separator_software.show()
 
         label_software = gtk.Label(_('Software'))
         label_software.set_alignment(0, 0)
-        self.pack_start(label_software, expand=False)
+        self._vbox.pack_start(label_software, expand=False)
         label_software.show()
         box_software = gtk.VBox()
         box_software.set_border_width(style.DEFAULT_SPACING * 2)
@@ -99,6 +111,21 @@ class AboutXO(SectionView):
         box_software.pack_start(box_build, expand=False)
         box_build.show()
 
+        box_sugar = gtk.HBox(spacing=style.DEFAULT_SPACING)
+        label_sugar = gtk.Label(_('Sugar:'))
+        label_sugar.set_alignment(1, 0)
+        label_sugar.modify_fg(gtk.STATE_NORMAL,
+                              style.COLOR_SELECTION_GREY.get_gdk_color())
+        box_sugar.pack_start(label_sugar, expand=False)
+        self._group.add_widget(label_sugar)
+        label_sugar.show()
+        label_sugar_ver = gtk.Label(config.version)
+        label_sugar_ver.set_alignment(0, 0)
+        box_sugar.pack_start(label_sugar_ver, expand=False)
+        label_sugar_ver.show()
+        box_software.pack_start(box_sugar, expand=False)
+        box_sugar.show()
+
         box_firmware = gtk.HBox(spacing=style.DEFAULT_SPACING)
         label_firmware = gtk.Label(_('Firmware:'))
         label_firmware.set_alignment(1, 0)
@@ -114,5 +141,55 @@ class AboutXO(SectionView):
         box_software.pack_start(box_firmware, expand=False)
         box_firmware.show()
 
-        self.pack_start(box_software, expand=False)
+        self._vbox.pack_start(box_software, expand=False)
         box_software.show()
+
+    def _setup_copyright(self):
+        separator_copyright = gtk.HSeparator()
+        self._vbox.pack_start(separator_copyright, expand=False)
+        separator_copyright.show()
+
+        label_copyright = gtk.Label(_('Copyright and License'))
+        label_copyright.set_alignment(0, 0)
+        self._vbox.pack_start(label_copyright, expand=False)
+        label_copyright.show()
+        vbox_copyright = gtk.VBox()
+        vbox_copyright.set_border_width(style.DEFAULT_SPACING * 2)
+        vbox_copyright.set_spacing(style.DEFAULT_SPACING)
+
+        label_copyright = gtk.Label(_("© 2008 One Laptop per Child Assocation "
+            + "Inc; Red Hat, Inc; and Contributors."))
+        label_copyright.set_alignment(0, 0)
+        label_copyright.show()
+        vbox_copyright.pack_start(label_copyright, expand=False)
+
+        label_info = gtk.Label(_("Sugar is the graphical user interface that "
+            + "you are looking at. Sugar is free software, covered by the "
+            + "GNU General Public License, and you are welcome to change it "
+            + "and/or distribute copies of it under certain conditions "
+            + "described therein."))
+        label_info.set_alignment(0, 0)
+        label_info.set_line_wrap(True)
+        label_info.set_size_request(gtk.gdk.screen_width() / 2, -1)
+        label_info.show()
+        vbox_copyright.pack_start(label_info, expand=False)
+
+        expander = gtk.Expander(_("Full license:"))
+        expander.connect("notify::expanded", self.license_expander_cb)
+        expander.show()
+        vbox_copyright.pack_start(expander, expand=True)
+
+        self._vbox.pack_start(vbox_copyright, expand=True)
+        vbox_copyright.show()
+
+    def license_expander_cb(self, expander, param_spec):
+        # load/destroy the license viewer on-demand, to avoid storing the
+        # GPL in memory at all times
+        if expander.get_expanded():
+            view_license = gtk.TextView()
+            view_license.set_editable(False)
+            view_license.get_buffer().set_text(self._model.get_license())
+            view_license.show()
+            expander.add(view_license)
+        else:
+            expander.get_child().destroy()