+/* Necessary to track whether the dpi changes and trigger a LOG() message,
+ * which is more easily visible to users. */
+static double logged_dpi = 0.0;
+
+static PangoLayout *create_layout_with_dpi(cairo_t *cr) {
+ PangoLayout *layout;
+ PangoContext *context;
+
+ context = pango_cairo_create_context(cr);
+ const double dpi = (double)root_screen->height_in_pixels * 25.4 /
+ (double)root_screen->height_in_millimeters;
+ if (logged_dpi != dpi) {
+ logged_dpi = dpi;
+ LOG("X11 root window dictates %f DPI\n", dpi);
+ } else {
+ DLOG("X11 root window dictates %f DPI\n", dpi);
+ }
+ pango_cairo_context_set_resolution(context, dpi);
+ layout = pango_layout_new(context);
+ g_object_unref(context);
+
+ return layout;
+}
+