Add option to set icon image corner radius

docs/dunst.5.pod

@@ -188,6 +188,11 @@ than half of the progress bar height.
 The corner radius of the progress bar in pixels. Gives the progress bar
 rounded corners. Set to 0 to disable.
 
+=item B<icon_corner_radius> (default: 0)
+
+The corner radius of the icon image in pixels. Gives the icon
+rounded corners. Set to 0 to disable.
+
 =item B<indicate_hidden> (values: [true/false], default: true)
 
 If this is set to true, a notification indicating how many notifications are

dunstrc

@@ -63,6 +63,8 @@
     # Corner radius for the progress bar. 0 disables rounded corners.
     progress_bar_corner_radius = 0
 
+    # Corner radius for the icon image.
+    icon_corner_radius = 0
 
     # Show how many messages are currently hidden (because of
     # notification_limit).

src/draw.c

@@ -711,7 +711,7 @@ static void render_content(cairo_t *c, struct colored_layout *cl, int width, dou
                 } // else ICON_RIGHT
 
                 cairo_set_source_surface(c, cl->icon, round(image_x * scale), round(image_y * scale));
-                draw_rect(c, image_x, image_y, image_width, image_height, scale);
+                draw_rounded_rect(c, image_x, image_y, image_width, image_height, settings.icon_corner_radius, scale, true, true);
                 cairo_fill(c);
         }
 

src/settings.h

@@ -148,6 +148,7 @@ struct settings {
         int progress_bar_max_width;
         int progress_bar_frame_width;
         int progress_bar_corner_radius;
+        int icon_corner_radius;
         bool progress_bar;
         enum zwlr_layer_shell_v1_layer layer;
         enum origin_values origin;

src/settings_data.h

@@ -1074,6 +1074,16 @@ static const struct setting allowed_settings[] = {
                 .parser = NULL,
                 .parser_data = NULL,
         },
+        {
+                .name = "icon_corner_radius",
+                .section = "global",
+                .description = "Icon corner radius",
+                .type = TYPE_INT,
+                .default_value = "0",
+                .value = &settings.icon_corner_radius,
+                .parser = NULL,
+                .parser_data = NULL,
+        },
         {
                 .name = "progress_bar",
                 .section = "global",