Implement dark mode using style sheets

Author: bernhardmgruber

python/scripts/nvbench_plot.py

@@ -239,35 +239,28 @@ def plot_entries(entries, title=None, output=None, dark=False):
     colors = [bench_colors[bench] for bench in bench_names]
 
     fig_height = max(4.0, 0.3 * len(entries) + 1.5)
-    fig, ax = plt.subplots(figsize=(10, fig_height))
-    if dark:
-        fig.patch.set_facecolor("black")
-        ax.set_facecolor("black")
-        ax.tick_params(colors="white")
-        ax.xaxis.label.set_color("white")
-        ax.yaxis.label.set_color("white")
-        ax.title.set_color("white")
-        for spine in ax.spines.values():
-            spine.set_color("white")
-
-    y_pos = range(len(labels))
-    ax.barh(y_pos, values, color=colors)
-    ax.set_yticks(y_pos)
-    ax.set_yticklabels(labels)
-    ax.invert_yaxis()
-    ax.set_ylim(len(labels) - 0.5, -0.5)
-
-    ax.xaxis.set_major_formatter(PercentFormatter(1.0))
-
-    if title:
-        ax.set_title(title)
-
-    fig.tight_layout()
-
-    if output:
-        fig.savefig(output, dpi=150)
-    else:
-        plt.show()
+    style = "dark_background" if dark else None
+    with plt.style.context(style) if style else plt.style.context("default"):
+        fig, ax = plt.subplots(figsize=(10, fig_height))
+
+        y_pos = range(len(labels))
+        ax.barh(y_pos, values, color=colors)
+        ax.set_yticks(y_pos)
+        ax.set_yticklabels(labels)
+        ax.invert_yaxis()
+        ax.set_ylim(len(labels) - 0.5, -0.5)
+
+        ax.xaxis.set_major_formatter(PercentFormatter(1.0))
+
+        if title:
+            ax.set_title(title)
+
+        fig.tight_layout()
+
+        if output:
+            fig.savefig(output, dpi=150)
+        else:
+            plt.show()
 
     return 0