general: Add Flatpak demogtk4

Similar to what gtk does, provide a gtk manifest to build a demo so
one can hack on pygobject from GNOME Builder in a easy way.

1 files changed, 80 insertions, 0 deletions

diff --git a/examples/demo/pygobject-demo.py b/examples/demo/pygobject-demo.py
new file mode 100755
index 00000000..6a31f600
--- /dev/null
+++ b/examples/demo/pygobject-demo.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python3
+# pygobject-demo.py
+#
+# Copyright 2018 Carlos Soriano <csoriano@redhat.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import gi
+gi.require_version('Gtk', '4.0')
+from gi.repository import Gtk, Gio
+
+from typing import Dict, Any
+import appwindow
+import flowbox
+
+class PyDemoApplication(Gtk.Application):
+    __gtype_name__ = 'PyDemoApplication'
+
+    def __init__(self) -> None:
+        super().__init__(application_id='org.gnome.pygobject-demo',
+                         flags=Gio.ApplicationFlags.FLAGS_NONE)
+
+    def do_activate(self) -> None:
+        win: Gtk.Window = self.get_active_window()
+        if not win:
+            win = PyDemoWindow(application=self)
+        win.present()
+
+class PyDemoWindow(Gtk.ApplicationWindow):
+    __gtype_name__ = 'PyDemoWindow'
+
+    def __init__(self, **kwargs: Dict[str, Any]) -> None:
+        super().__init__(**kwargs)
+        self.set_default_size(600, 400)
+        self._main_box = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL)
+        self.add(self._main_box)
+        self._sidebar = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
+        self._main_box.add(self._sidebar)
+        self._stack = Gtk.Stack()
+        self._main_box.add(self._stack)
+
+        self.add_demos()
+
+    def add_demos(self):
+        button = Gtk.Button(label='Basics')
+        button.connect("clicked", lambda _: self._stack.set_visible_child_name('basics'))
+        button.vexpand = False
+        button.valign = Gtk.Align.START
+        self._sidebar.add(button)
+        self._stack.add_named(appwindow.get_content(), 'basics')
+
+        button = Gtk.Button(label='Flowbox')
+        button.connect("clicked", lambda _: self._stack.set_visible_child_name('flowbox'))
+        button.vexpand = False
+        button.valign = Gtk.Align.START
+        self._sidebar.add(button)
+        self._stack.add_named(flowbox.get_content(), 'flowbox')
+
+
+def main(demoapp=None):
+    app = PyDemoApplication()
+
+    return app.run()
+
+
+if __name__ == '__main__':
+    main()