added revealer example

handy/3-revealer.py

@@ -0,0 +1,50 @@
+selamun = "aleyküm"
+
+import gi, os
+gi.require_version("Gtk", "3.0")
+gi.require_version("Handy", "1")
+from gi.repository import Gtk, Handy
+
+Handy.init()
+
+class MyWindow(Handy.Window):
+    def __init__(self):
+        super().__init__(title="Hello World")
+        self.set_default_size(500, 300)
+
+        # WindowHandle
+        self.handle = Handy.WindowHandle()
+        self.add(self.handle)
+
+        # WinBox
+        self.winBox = Gtk.Box(spacing=6, orientation=Gtk.Orientation.VERTICAL)
+        self.handle.add(self.winBox)
+
+        # Revealer
+        self.revealer = Gtk.Revealer()
+        self.revealer.set_reveal_child(True)
+        self.winBox.pack_start(self.revealer, False, True, 0)
+
+        # Headerbar
+        self.hb = Handy.HeaderBar()
+        self.hb.set_show_close_button(True)
+        self.hb.props.title = "Revealer Example"
+        self.revealer.add(self.hb)
+
+        # MainBox
+        self.mainBox = Gtk.Box(spacing=6, orientation=Gtk.Orientation.VERTICAL)
+        self.winBox.pack_start(self.mainBox, True, False, 0)
+
+        # Revealer button
+        self.rvBtn = Gtk.Button(label="Hide headerbar")
+        self.mainBox.pack_start(self.rvBtn, True, False, 0)
+        self.rvBtn.connect("clicked", self.on_rvBtn_clicked)
+
+    def on_rvBtn_clicked(self, widget):
+        reveal = self.revealer.get_reveal_child()
+        self.revealer.set_reveal_child(not reveal)
+
+win = MyWindow()
+win.connect("destroy", Gtk.main_quit)
+win.show_all()
+Gtk.main()