More Python demos (#714)

* Library: Port 'Styling with CSS' to Python

* Library: Port 'Breakpoints' to Python

* Library: Port 'Overlay' to Python

* Library: Port 'Popovers' to Python

* Library: Port 'Emoji Chooser' to Python

* Library: Port 'Image' to Python

* Library: Port 'Separator' to Python

* Library: Port 'Menu Button' to Python

* Library: Port 'Radio Buttons' to Python

* Library: Port 'Link Button' to Python

Author: UrtsiSantsi

src/Library/demos/Breakpoints/main.py

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+import gi
+
+gi.require_version("Gtk", "4.0")
+gi.require_version("Adw", "1")
+from gi.repository import Gtk, Adw
+import workbench
+
+breakpoint: Adw.Breakpoint = workbench.builder.get_object("breakpoint")
+
+breakpoint.connect("apply", lambda _widget: print("Breakpoint Applied"))
+breakpoint.connect("unapply", lambda _widget: print("Breakpoint Unapplied"))

src/Library/demos/Emoji Chooser/main.py

@@ -0,0 +1,10 @@
+import gi
+
+gi.require_version("Gtk", "4.0")
+from gi.repository import Gtk
+import workbench
+
+emoji_chooser: Gtk.EmojiChooser = workbench.builder.get_object("emoji_chooser")
+button: Gtk.Button = workbench.builder.get_object("button")
+
+emoji_chooser.connect("emoji-picked", lambda _chooser, emoji: button.set_label(emoji))

src/Library/demos/Image/main.py

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+import gi
+
+gi.require_version("Gtk", "4.0")
+gi.require_version("Gio", "2.0")
+from gi.repository import Gtk, Gio
+import workbench
+
+path: Gio.File = Gio.File.new_for_uri(workbench.resolve("workbench.png")).get_path()
+
+workbench.builder.get_object("icon1").set_from_file(path)
+workbench.builder.get_object("icon2").set_from_file(path)
+workbench.builder.get_object("icon3").set_from_file(path)

src/Library/demos/Link Button/main.py

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+import gi
+
+gi.require_version("Gtk", "4.0")
+from gi.repository import Gtk
+import workbench
+
+linkbutton: Gtk.LinkButton = workbench.builder.get_object("linkbutton")
+
+
+def on_activate_link(button: Gtk.LinkButton):
+    print(f"About to activate {button.get_uri()}")
+
+    # Return True if handling the link manually, or
+    # False to let the default behavior continue
+    return False
+
+
+linkbutton.connect(
+    "notify::visited", lambda _widget, _params: print("The link has been visited")
+)
+linkbutton.connect("activate-link", on_activate_link)

src/Library/demos/Menu Button/main.py

@@ -0,0 +1,20 @@
+import gi
+
+gi.require_version("Gtk", "4.0")
+gi.require_version("Adw", "1")
+from gi.repository import Gtk, Adw
+import workbench
+
+circular_switch: Adw.SwitchRow = workbench.builder.get_object("circular_switch")
+secondary_button: Gtk.MenuButton = workbench.builder.get_object("secondary")
+
+
+def update_css(_widget, _params):
+    if circular_switch.get_active():
+        secondary_button.add_css_class("circular")
+    else:
+        secondary_button.remove_css_class("circular")
+
+
+circular_switch.connect("notify::active", update_css)
+

src/Library/demos/Overlay/main.py

@@ -0,0 +1,11 @@
+import gi
+
+gi.require_version("Gtk", "4.0")
+gi.require_version("Gio", "2.0")
+from gi.repository import Gtk, Gio
+import workbench
+
+file: Gio.File = Gio.File.new_for_uri(workbench.resolve("./image.png"))
+
+picture: Gtk.Picture = workbench.builder.get_object("picture")
+picture.set_file(file)

src/Library/demos/Popovers/main.py

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+import gi
+
+gi.require_version("Gtk", "4.0")
+from gi.repository import Gtk
+import workbench
+
+
+def onClosed(popover):
+    name = popover.get_name()
+    print(f"{name} closed.")
+
+
+popover_ids = ("plain_popover", "popover_menu")
+
+for id in popover_ids:
+    popover = workbench.builder.get_object(id)
+    popover.connect("closed", onClosed)

src/Library/demos/Radio Buttons/main.py

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+import gi
+
+gi.require_version("Gtk", "4.0")
+from gi.repository import Gtk
+import workbench
+
+radio_button_1: Gtk.CheckButton = workbench.builder.get_object("radio_button_1")
+radio_button_2: Gtk.CheckButton = workbench.builder.get_object("radio_button_2")
+
+radio_button_1.connect("toggled", lambda widget: on_toggled(widget, "Force Light Mode"))
+radio_button_2.connect("toggled", lambda widget: on_toggled(widget, "Force Dark Mode"))
+
+
+def on_toggled(radio_button: Gtk.CheckButton, message):
+    if radio_button.get_active():
+        print(message)

src/Library/demos/Separator/main.py

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+import gi
+
+gi.require_version("Gtk", "4.0")
+gi.require_version("Gio", "2.0")
+from gi.repository import Gtk, Gio
+import workbench
+
+picture_one: Gtk.Picture = workbench.builder.get_object("picture_one")
+picture_two: Gtk.Picture = workbench.builder.get_object("picture_two")
+
+file: Gio.File = Gio.File.new_for_uri(workbench.resolve("./image.png"))
+
+picture_one.set_file(file)
+picture_two.set_file(file)

src/Library/demos/Styling with CSS/main.py

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+import gi
+
+gi.require_version("Gtk", "4.0")
+from gi.repository import Gtk
+import workbench
+
+basic_label: Gtk.Label = workbench.builder.get_object("basic_label")
+
+basic_label.add_css_class("css_text")