[add] progress bar view

blackbox/ui/ProgressBarWindow.py

@@ -0,0 +1,87 @@
+from gi.repository import Gtk, GLib
+import gi
+
+
+# Since a system can have multiple versions
+# of GTK + installed, we want to make
+# sure that we are importing GTK + 3.
+gi.require_version("Gtk", "3.0")
+
+
+class ProgressBarWindow(Gtk.Window):
+    new_value = 0.0
+
+    def __init__(self):
+        Gtk.Window.__init__(self, title="Progress Bar")
+        self.set_border_width(10)
+
+        vbox = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL, spacing=6)
+        self.add(vbox)
+
+        # Create a ProgressBar
+        self.progressbar = Gtk.ProgressBar()
+        vbox.pack_start(self.progressbar, True, True, 0)
+
+        # Create CheckButton with labels "Show text",
+        # "Activity mode", "Right to Left" respectively
+        # button = Gtk.CheckButton(label="Show text")
+        # button.connect("toggled", self.on_show_text_toggled)
+        # vbox.pack_start(button, True, True, 0)
+
+        # button = Gtk.CheckButton(label="Activity mode")
+        # button.connect("toggled", self.on_activity_mode_toggled)
+        # vbox.pack_start(button, True, True, 0)
+
+        # button = Gtk.CheckButton(label="Right to Left")
+        # button.connect("toggled", self.on_right_to_left_toggled)
+        # vbox.pack_start(button, True, True, 0)
+
+        # self.timeout_id = GLib.timeout_add(5000, self.on_timeout, None)
+        self.activity_mode = False
+
+    def set_text(self, text):
+        self.progressbar.set_text(text)
+        self.progressbar.set_show_text(True)
+
+    def reset_timer(self):
+        new_value = 0.0
+        self.progressbar.set_fraction(new_value)
+
+    def on_activity_mode_toggled(self, button):
+        self.activity_mode = button.get_active()
+        if self.activity_mode:
+            self.progressbar.pulse()
+        else:
+            self.progressbar.set_fraction(0.0)
+
+    def on_right_to_left_toggled(self, button):
+        value = button.get_active()
+        self.progressbar.set_inverted(value)
+
+    def update(self, fraction):
+        new_value = self.progressbar.get_fraction() + fraction
+        self.progressbar.set_fraction(new_value)
+        if new_value >= 1.0:
+            return False
+        return True
+
+    def get_complete(self):
+        if self.progressbar.get_fraction() >= 1.0:
+            return True
+        return False
+
+    def on_timeout(self, user_data=0.01):
+        """
+        Update value on the progress bar
+        """
+        if self.activity_mode:
+            self.progressbar.pulse()
+        else:
+            new_value = self.progressbar.get_fraction() + user_data
+
+            if new_value > 1:
+                new_value = 0.0
+                return False
+
+            self.progressbar.set_fraction(new_value)
+        return True