Add whats new for new slider styles

ianhi · ianhi · commit 91c2e4ed4ceb · 2021-06-23T17:22:19.000-04:00
diff --git a/doc/users/next_whats_new/slider_styling.rst b/doc/users/next_whats_new/slider_styling.rst
@@ -0,0 +1,40 @@
+Updated the appearance of Slider widgets
+----------------------------------------
+
+The appearance of `~.Slider` and `~.RangeSlider` widgets
+were updated and given new styling parameters for the
+added handles.
+
+.. plot::
+    from matplotlib.widgets import Slider
+
+    plt.figure(figsize=(4, 2))
+    ax_old = plt.axes([0.2, 0.65, 0.65, 0.1])
+    ax_new = plt.axes([0.2, 0.25, 0.65, 0.1])
+    Slider(ax_new, "New", 0, 1)
+
+    ax = ax_old
+    valmin = 0
+    valinit = 0.5
+    ax.set_xlim([0, 1])
+    ax_old.axvspan(valmin, valinit, 0, 1)
+    ax.axvline(valinit, 0, 1, color="r", lw=1)
+    ax.set_xticks([])
+    ax.set_yticks([])
+    ax.text(
+        -0.02,
+        0.5,
+        "Old",
+        transform=ax.transAxes,
+        verticalalignment="center",
+        horizontalalignment="right",
+    )
+
+    ax.text(
+        1.02,
+        0.5,
+        "0.5",
+        transform=ax.transAxes,
+        verticalalignment="center",
+        horizontalalignment="left",
+    )
