docs: add progress_bar example

Author: wkentaro

README.md

@@ -151,6 +151,10 @@ tiled = imgviz.tile(
 		<td><pre><a href="examples/pie.py">examples/pie.py</a></pre></td>
 		<td><img src="examples/assets/pie.jpg" width="20.0%" /></td>
 	</tr>
+	<tr>
+		<td><pre><a href="examples/progress_bar.py">examples/progress_bar.py</a></pre></td>
+		<td><img src="examples/assets/progress_bar.jpg" width="20.0%" /></td>
+	</tr>
 	<tr>
 		<td><pre><a href="examples/resize.py">examples/resize.py</a></pre></td>
 		<td><img src="examples/assets/resize.jpg" width="52.21052631578947%" /></td>

examples/assets/progress_bar.jpg

@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+
+import matplotlib.pyplot as plt
+
+import imgviz
+
+
+def progress_bar() -> None:
+    img = imgviz.data.lena()
+    _, width = img.shape[:2]
+    values = [0.15, 0.4, 0.65, 0.9]
+
+    viz = img
+    for i, value in enumerate(values):
+        y1 = 40 + i * 60
+        viz = imgviz.draw.progress_bar(
+            viz,
+            yx1=(y1, 40),
+            yx2=(y1 + 36, width - 40),
+            value=value,
+            fill=(0, 200, 0),
+            background=(0, 0, 0),
+            outline=(255, 255, 255),
+        )
+        viz = imgviz.draw.text(
+            viz,
+            yx=(y1 + 8, 52),
+            text=f"{round(value * 100)}%",
+            size=22,
+            color=(255, 255, 255),
+        )
+
+    plt.figure(dpi=200)
+    plt.imshow(viz)
+    plt.axis("off")
+
+
+if __name__ == "__main__":
+    from _base import run_example
+
+    run_example(progress_bar)