[gtk/broadway-display-scale] inspector: Support scale changes on Broadway

[Matthias Clasen <matthiasc src gnome org>]

commit b13c2e17f138215fce055a33e1aff4dfaa4eab2e
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon May 10 10:55:41 2021 -0400

    inspector: Support scale changes on Broadway

 gtk/inspector/visual.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)
---
diff --git a/gtk/inspector/visual.c b/gtk/inspector/visual.c
index f3cb4695ac..a328b81c6d 100644
--- a/gtk/inspector/visual.c
+++ b/gtk/inspector/visual.c
@@ -55,6 +55,9 @@
 #ifdef GDK_WINDOWING_MACOS
 #include "macos/gdkmacos.h"
 #endif
+#ifdef GDK_WINDOWING_BROADWAY
+#include "broadway/gdkbroadway.h"
+#endif
 
 #include "gdk/gdk-private.h"
 
@@ -796,14 +799,21 @@ init_font_scale (GtkInspectorVisual *vis)
                     G_CALLBACK (font_scale_entry_activated), vis);
 }
 
-#if defined (GDK_WINDOWING_X11)
+#if defined (GDK_WINDOWING_X11) || defined (GDK_WINDOWING_BROADWAY)
 static void
 scale_changed (GtkAdjustment *adjustment, GtkInspectorVisual *vis)
 {
   int scale;
 
   scale = gtk_adjustment_get_value (adjustment);
-  gdk_x11_display_set_surface_scale (vis->display, scale);
+#if defined (GDK_WINDOWING_X11)
+  if (GDK_IS_X11_DISPLAY (vis->display))
+    gdk_x11_display_set_surface_scale (vis->display, scale);
+#endif
+#if defined (GDK_WINDOWING_BROADWAY)
+  if (GDK_IS_BROADWAY_DISPLAY (vis->display))
+    gdk_broadway_display_set_surface_scale (vis->display, scale);
+#endif
 }
 #endif
 
@@ -821,6 +831,18 @@ init_scale (GtkInspectorVisual *vis)
                         G_CALLBACK (scale_changed), vis);
     }
   else
+#endif
+#if defined (GDK_WINDOWING_BROADWAY)
+  if (GDK_IS_BROADWAY_DISPLAY (vis->display))
+    {
+      double scale;
+
+      scale = gdk_monitor_get_scale_factor (gdk_x11_display_get_primary_monitor (vis->display));
+      gtk_adjustment_set_value (vis->scale_adjustment, scale);
+      g_signal_connect (vis->scale_adjustment, "value-changed",
+                        G_CALLBACK (scale_changed), vis);
+    }
+  else
 #endif
     {
       GtkWidget *row;