[gtk/surface-scale: 1/4] surface: Add a scale-factor property

[Matthias Clasen <matthiasc src gnome org>]

commit aefc630d29c4d9b57229bcffd7461bf02598ce20
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jan 16 15:16:36 2021 -0500

    surface: Add a scale-factor property
    
    This will allow us to notify when the scale changes.

 gdk/gdksurface.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)
---
diff --git a/gdk/gdksurface.c b/gdk/gdksurface.c
index 35c47a3476..ec48ad3543 100644
--- a/gdk/gdksurface.c
+++ b/gdk/gdksurface.c
@@ -92,6 +92,7 @@ enum {
   PROP_MAPPED,
   PROP_WIDTH,
   PROP_HEIGHT,
+  PROP_SCALE_FACTOR,
   LAST_PROP
 };
 
@@ -551,6 +552,13 @@ gdk_surface_class_init (GdkSurfaceClass *klass)
                         0, G_MAXINT, 0,
                         G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 
+  properties[PROP_SCALE_FACTOR] =
+      g_param_spec_int ("scale-factor",
+                        P_("Scale factor"),
+                        P_("Scale factor"),
+                        1, G_MAXINT, 1,
+                        G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+
   g_object_class_install_properties (object_class, LAST_PROP, properties);
 
   /**
@@ -782,6 +790,10 @@ gdk_surface_get_property (GObject    *object,
       g_value_set_int (value, surface->height);
       break;
 
+    case PROP_SCALE_FACTOR:
+      g_value_set_int (value, gdk_surface_get_scale_factor (surface));
+      break;
+
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;