Add ProgressBar widget

docs/api/widgets.md

@@ -64,6 +64,7 @@ Slider Widgets
    Slider
    FloatSlider
    LogSlider
+   ProgressBar
 
 Categorical Widgets
 -------------------

magicgui/backends/_qtpy/__init__.py

@@ -8,6 +8,7 @@
     FloatSpinBox,
     Label,
     LineEdit,
+    ProgressBar,
     PushButton,
     RadioButton,
     Slider,
@@ -28,6 +29,7 @@
     "FloatSpinBox",
     "Label",
     "LineEdit",
+    "ProgressBar",
     "PushButton",
     "RadioButton",
     "Slider",

magicgui/backends/_qtpy/widgets.py

@@ -319,8 +319,8 @@ def _mgui_set_value(self, value) -> None:
 class Slider(QBaseRangedWidget, _protocols.SupportsOrientation):
     _qwidget: QtW.QSlider
 
-    def __init__(self):
-        super().__init__(QtW.QSlider)
+    def __init__(self, qwidg=QtW.QSlider):
+        super().__init__(qwidg)
         self._mgui_set_orientation("horizontal")
 
     def _mgui_set_orientation(self, value) -> Any:
@@ -334,6 +334,22 @@ def _mgui_get_orientation(self) -> Any:
         return "vertical" if orientation == Qt.Vertical else "horizontal"
 
 
+class ProgressBar(Slider):
+    _qwidget: QtW.QProgressBar
+
+    def __init__(self):
+        super().__init__(QtW.QProgressBar)
+        self._mgui_set_orientation("horizontal")
+
+    def _mgui_get_step(self) -> float:
+        """Get the step size."""
+        return 1
+
+    def _mgui_set_step(self, value: float):
+        """Set the step size."""
+        pass
+
+
 class ComboBox(QBaseValueWidget, _protocols.CategoricalWidgetProtocol):
     _qwidget: QtW.QComboBox
 

magicgui/widgets/__init__.py

@@ -25,6 +25,7 @@
     LineEdit,
     LiteralEvalLineEdit,
     LogSlider,
+    ProgressBar,
     PushButton,
     RadioButton,
     RangeEdit,
@@ -68,6 +69,7 @@
     "LiteralEvalLineEdit",
     "LogSlider",
     "PushButton",
+    "ProgressBar",
     "RadioButton",
     "RangeEdit",
     "SliceEdit",

magicgui/widgets/_concrete.py

@@ -201,6 +201,11 @@ class FloatSpinBox(RangedWidget):
     """A widget to edit a float with clickable up/down arrows."""
 
 
+@backend_widget
+class ProgressBar(SliderWidget):
+    """A progress bar widget."""
+
+
 @backend_widget
 class Slider(SliderWidget):
     """A slider widget to adjust an integer value within a range."""