GUI: Add UIView (#2036)

* GUI: Add UIView

* Fix docs

* expose UIView

* fix imports

arcade/gui/__init__.py

@@ -30,14 +30,15 @@
 from arcade.gui.widgets import UIInteractiveWidget
 from arcade.gui.widgets import UILayout
 from arcade.gui.widgets import UISpace
+from arcade.gui.view import UIView
+from arcade.gui.widgets.dropdown import UIDropdown
 from arcade.gui.widgets import UISpriteWidget
 from arcade.gui.widgets import UIWidget
 from arcade.gui.widgets.buttons import (
     UITextureButton,
     UITextureButtonStyle,
     UIFlatButton,
 )
-from arcade.gui.widgets.dropdown import UIDropdown
 from arcade.gui.widgets.image import UIImage
 from arcade.gui.widgets.layout import UIBoxLayout, UIAnchorLayout, UIGridLayout
 from arcade.gui.widgets.slider import UIBaseSlider, UISlider, UITextureSlider, UISliderStyle
@@ -66,6 +67,7 @@
     "UIInputText",
     "UILayout",
     "UILabel",
+    "UIView",
     "UIMouseEvent",
     "UIMouseDragEvent",
     "UIMouseMovementEvent",

arcade/gui/view.py

@@ -0,0 +1,24 @@
+from arcade import View
+from arcade.gui import UIManager
+
+
+class UIView(View):
+    """This view provides basic GUI setup.
+
+    This is a convenience class, which adds the UIManager to the view under `self.ui`.
+    The UIManager is enabled when the view is shown and disabled when the view is hidden.
+
+    If you override ``on_show_view`` or ``on_show_view``,
+    don't forget to call super().on_show_view() or super().on_hide_view().
+
+    """
+
+    def __init__(self):
+        super().__init__()
+        self.ui = UIManager()
+
+    def on_show_view(self):
+        self.ui.enable()
+
+    def on_hide_view(self):
+        self.ui.disable()

util/update_quick_index.py

@@ -76,6 +76,7 @@
     'gui/surface.py': ['GUI', 'gui.rst'],
     'gui/ui_manager.py': ['GUI', 'gui.rst'],
     'gui/nine_patch.py': ['GUI', 'gui.rst'],
+    'gui/view.py': ['GUI', 'gui.rst'],
     'widgets/__init__.py': ['GUI Widgets', 'gui_widgets.rst'],
     'widgets/buttons.py': ['GUI Widgets', 'gui_widgets.rst'],
     'widgets/dropdown.py': ['GUI Widgets', 'gui_widgets.rst'],