File 734.patch of Package gnome-control-center

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File 734.patch of Package gnome-control-center (Revision 5192113b3a42f719ba2b0f92694824ed)

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From c3df7734630046891c8689a71ab8a6a1efee68a7 Mon Sep 17 00:00:00 2001
From: Dor Askayo <dor.askayo@gmail.com>
Date: Sat, 28 Mar 2020 19:29:59 +0300
Subject: [PATCH] display: Add a switch for variable refresh rate

This can be used to allow or disallow variable refresh rate on
monitors that support it.
---
 panels/display/cc-display-config-dbus.c | 63 ++++++++++++++++++++++++-
 panels/display/cc-display-config.c      | 19 ++++++++
 panels/display/cc-display-config.h      |  9 ++++
 panels/display/cc-display-settings.c    | 29 ++++++++++++
 panels/display/cc-display-settings.ui   | 15 ++++++
 5 files changed, 134 insertions(+), 1 deletion(-)

diff --git a/panels/display/cc-display-config-dbus.c b/panels/display/cc-display-config-dbus.c
index d94f5417bf..ba6f74caf7 100644
--- a/panels/display/cc-display-config-dbus.c
+++ b/panels/display/cc-display-config-dbus.c
@@ -317,7 +317,6 @@ cc_display_logical_monitor_class_init (CcDisplayLogicalMonitorClass *klass)
   gobject_class->finalize = cc_display_logical_monitor_finalize;
 }
 
-
 typedef enum _CcDisplayMonitorUnderscanning
 {
   UNDERSCANNING_UNSUPPORTED = 0,
@@ -325,6 +324,13 @@ typedef enum _CcDisplayMonitorUnderscanning
   UNDERSCANNING_ENABLED
 } CcDisplayMonitorUnderscanning;
 
+typedef enum _CcDisplayMonitorVariableRefreshRate
+{
+  VRR_UNSUPPORTED = 0,
+  VRR_DISALLOWED,
+  VRR_ALLOWED
+} CcDisplayMonitorVariableRefreshRate;
+
 struct _CcDisplayMonitorDBus
 {
   CcDisplayMonitor parent_instance;
@@ -341,6 +347,7 @@ struct _CcDisplayMonitorDBus
   gboolean builtin;
   CcDisplayMonitorUnderscanning underscanning;
   CcDisplayMonitorPrivacy privacy_screen;
+  CcDisplayMonitorVariableRefreshRate vrr_mode;
   int max_width;
   int max_height;
 
@@ -649,6 +656,37 @@ cc_display_monitor_dbus_set_underscanning (CcDisplayMonitor *pself,
     self->underscanning = UNDERSCANNING_DISABLED;
 }
 
+static gboolean
+cc_display_monitor_dbus_supports_variable_refresh_rate (CcDisplayMonitor *pself)
+{
+  CcDisplayMonitorDBus *self = CC_DISPLAY_MONITOR_DBUS (pself);
+
+  return self->vrr_mode != VRR_UNSUPPORTED;
+}
+
+static gboolean
+cc_display_monitor_dbus_get_variable_refresh_rate (CcDisplayMonitor *pself)
+{
+  CcDisplayMonitorDBus *self = CC_DISPLAY_MONITOR_DBUS (pself);
+
+  return self->vrr_mode == VRR_ALLOWED;
+}
+
+static void
+cc_display_monitor_dbus_set_variable_refresh_rate (CcDisplayMonitor *pself,
+                                                   gboolean allowed)
+{
+  CcDisplayMonitorDBus *self = CC_DISPLAY_MONITOR_DBUS (pself);
+
+  if (self->vrr_mode == VRR_UNSUPPORTED)
+    return;
+
+  if (allowed)
+    self->vrr_mode = VRR_ALLOWED;
+  else
+    self->vrr_mode = VRR_DISALLOWED;
+}
+
 static CcDisplayMode *
 cc_display_monitor_dbus_get_closest_mode (CcDisplayMonitorDBus *self,
                                           CcDisplayModeDBus *mode)
@@ -799,6 +837,7 @@ static void
 cc_display_monitor_dbus_init (CcDisplayMonitorDBus *self)
 {
   self->underscanning = UNDERSCANNING_UNSUPPORTED;
+  self->vrr_mode = VRR_UNSUPPORTED;
   self->max_width = G_MAXINT;
   self->max_height = G_MAXINT;
 }
@@ -853,6 +892,9 @@ cc_display_monitor_dbus_class_init (CcDisplayMonitorDBusClass *klass)
   parent_class->get_underscanning = cc_display_monitor_dbus_get_underscanning;
   parent_class->set_underscanning = cc_display_monitor_dbus_set_underscanning;
   parent_class->get_privacy = cc_display_monitor_dbus_get_privacy;
+  parent_class->supports_variable_refresh_rate = cc_display_monitor_dbus_supports_variable_refresh_rate;
+  parent_class->get_variable_refresh_rate = cc_display_monitor_dbus_get_variable_refresh_rate;
+  parent_class->set_variable_refresh_rate = cc_display_monitor_dbus_set_variable_refresh_rate;
   parent_class->set_mode = cc_display_monitor_dbus_set_mode;
   parent_class->set_compatible_clone_mode = cc_display_monitor_dbus_set_compatible_clone_mode;
   parent_class->set_position = cc_display_monitor_dbus_set_position;
@@ -930,6 +972,15 @@ cc_display_monitor_dbus_new (GVariant *variant,
           else
             self->underscanning = UNDERSCANNING_DISABLED;
         }
+      else if (g_str_equal (s, "is-vrr-allowed"))
+        {
+          gboolean vrr_allowed = FALSE;
+          g_variant_get (v, "b", &vrr_allowed);
+          if (vrr_allowed)
+            self->vrr_mode = VRR_ALLOWED;
+          else
+            self->vrr_mode = VRR_DISALLOWED;
+        }
       else if (g_str_equal (s, "max-screen-size"))
         {
           g_variant_get (v, "ii", &self->max_width, &self->max_height);
@@ -1042,6 +1093,13 @@ build_monitors_variant (GHashTable *monitors)
                              "underscanning",
                              g_variant_new_boolean (monitor->underscanning == UNDERSCANNING_ENABLED));
 
+      if (monitor->vrr_mode != VRR_UNSUPPORTED)
+        {
+          g_variant_builder_add (&props_builder, "{sv}",
+                                 "allow_vrr",
+                                 g_variant_new_boolean (monitor->vrr_mode == VRR_ALLOWED));
+        }
+
       mode_dbus = CC_DISPLAY_MODE_DBUS (monitor->current_mode);
       g_variant_builder_add (&builder, "(ss@*)",
                              monitor->connector_name,
@@ -1176,6 +1234,9 @@ cc_display_config_dbus_equal (CcDisplayConfig *pself,
       if (m1->underscanning != m2->underscanning)
         return FALSE;
 
+      if (m1->vrr_mode != m2->vrr_mode)
+        return FALSE;
+
       if (!cc_display_logical_monitor_equal (m1->logical_monitor, m2->logical_monitor))
         return FALSE;
 
diff --git a/panels/display/cc-display-config.c b/panels/display/cc-display-config.c
index f2ccda5221..687aa85c54 100644
--- a/panels/display/cc-display-config.c
+++ b/panels/display/cc-display-config.c
@@ -340,6 +340,25 @@ cc_display_monitor_get_privacy (CcDisplayMonitor *self)
   return CC_DISPLAY_MONITOR_GET_CLASS (self)->get_privacy (self);
 }
 
+gboolean
+cc_display_monitor_supports_variable_refresh_rate (CcDisplayMonitor *self)
+{
+  return CC_DISPLAY_MONITOR_GET_CLASS (self)->supports_variable_refresh_rate (self);
+}
+
+gboolean
+cc_display_monitor_get_variable_refresh_rate (CcDisplayMonitor *self)
+{
+  return CC_DISPLAY_MONITOR_GET_CLASS (self)->get_variable_refresh_rate (self);
+}
+
+void
+cc_display_monitor_set_variable_refresh_rate (CcDisplayMonitor *self,
+                                              gboolean allowed)
+{
+  return CC_DISPLAY_MONITOR_GET_CLASS (self)->set_variable_refresh_rate (self, allowed);
+}
+
 void
 cc_display_monitor_set_mode (CcDisplayMonitor *self, CcDisplayMode *m)
 {
diff --git a/panels/display/cc-display-config.h b/panels/display/cc-display-config.h
index ea52c2d599..70aa9ebbee 100644
--- a/panels/display/cc-display-config.h
+++ b/panels/display/cc-display-config.h
@@ -132,6 +132,10 @@ struct _CcDisplayMonitorClass
   void              (*set_underscanning)      (CcDisplayMonitor  *self,
                                                gboolean           u);
   CcDisplayMonitorPrivacy (*get_privacy)      (CcDisplayMonitor  *self);
+  gboolean          (*supports_variable_refresh_rate) (CcDisplayMonitor *self);
+  gboolean          (*get_variable_refresh_rate)      (CcDisplayMonitor *self);
+  void              (*set_variable_refresh_rate)      (CcDisplayMonitor *self,
+                                                       gboolean          u);
   CcDisplayMode*    (*get_mode)               (CcDisplayMonitor  *self);
   CcDisplayMode*    (*get_preferred_mode)     (CcDisplayMonitor  *self);
   GList*            (*get_modes)              (CcDisplayMonitor  *self);
@@ -230,6 +234,11 @@ void              cc_display_monitor_set_underscanning      (CcDisplayMonitor  *
 
 CcDisplayMonitorPrivacy cc_display_monitor_get_privacy      (CcDisplayMonitor *self);
 
+gboolean          cc_display_monitor_supports_variable_refresh_rate (CcDisplayMonitor *monitor);
+gboolean          cc_display_monitor_get_variable_refresh_rate      (CcDisplayMonitor *monitor);
+void              cc_display_monitor_set_variable_refresh_rate      (CcDisplayMonitor *monitor,
+                                                                     gboolean          allowed);
+
 CcDisplayMode*    cc_display_monitor_get_mode               (CcDisplayMonitor  *monitor);
 void              cc_display_monitor_get_geometry           (CcDisplayMonitor  *monitor,
                                                              int               *x,
diff --git a/panels/display/cc-display-settings.c b/panels/display/cc-display-settings.c
index 79de8b657a..39d2c7eff5 100644
--- a/panels/display/cc-display-settings.c
+++ b/panels/display/cc-display-settings.c
@@ -57,6 +57,8 @@ struct _CcDisplaySettings
   GtkWidget        *scale_combo_row;
   GtkWidget        *underscanning_row;
   GtkWidget        *underscanning_switch;
+  GtkWidget        *variable_refresh_rate_row;
+  GtkWidget        *variable_refresh_rate_switch;
 };
 
 typedef struct _CcDisplaySettings CcDisplaySettings;
@@ -257,6 +259,7 @@ cc_display_settings_rebuild_ui (CcDisplaySettings *self)
       gtk_widget_set_visible (self->scale_combo_row, FALSE);
       gtk_widget_set_visible (self->scale_buttons_row, FALSE);
       gtk_widget_set_visible (self->underscanning_row, FALSE);
+      gtk_widget_set_visible (self->variable_refresh_rate_row, FALSE);
 
       return G_SOURCE_REMOVE;
     }
@@ -267,6 +270,7 @@ cc_display_settings_rebuild_ui (CcDisplaySettings *self)
   g_object_freeze_notify ((GObject*) self->resolution_row);
   g_object_freeze_notify ((GObject*) self->scale_combo_row);
   g_object_freeze_notify ((GObject*) self->underscanning_switch);
+  g_object_freeze_notify ((GObject*) self->variable_refresh_rate_switch);
 
   cc_display_monitor_get_geometry (self->selected_output, NULL, NULL, &width, &height);
 
@@ -470,6 +474,12 @@ cc_display_settings_rebuild_ui (CcDisplaySettings *self)
   gtk_switch_set_active (GTK_SWITCH (self->underscanning_switch),
                          cc_display_monitor_get_underscanning (self->selected_output));
 
+  gtk_widget_set_visible (self->variable_refresh_rate_row,
+                          cc_display_monitor_supports_variable_refresh_rate (self->selected_output) &&
+                          !cc_display_config_is_cloning (self->config));
+  gtk_switch_set_active (GTK_SWITCH (self->variable_refresh_rate_switch),
+                         cc_display_monitor_get_variable_refresh_rate (self->selected_output));
+
   self->updating = TRUE;
   g_object_thaw_notify ((GObject*) self->enabled_switch);
   g_object_thaw_notify ((GObject*) self->orientation_row);
@@ -477,6 +487,7 @@ cc_display_settings_rebuild_ui (CcDisplaySettings *self)
   g_object_thaw_notify ((GObject*) self->resolution_row);
   g_object_thaw_notify ((GObject*) self->scale_combo_row);
   g_object_thaw_notify ((GObject*) self->underscanning_switch);
+  g_object_thaw_notify ((GObject*) self->variable_refresh_rate_switch);
   self->updating = FALSE;
 
   return G_SOURCE_REMOVE;
@@ -625,6 +636,21 @@ on_underscanning_switch_active_changed_cb (CcDisplaySettings *self)
   g_signal_emit_by_name (G_OBJECT (self), "updated", self->selected_output);
 }
 
+static void
+on_variable_refresh_rate_switch_active_changed_cb (GtkWidget         *widget,
+                                                   GParamSpec        *pspec,
+                                                   CcDisplaySettings *self)
+{
+  if (self->updating)
+    return;
+
+  cc_display_monitor_set_variable_refresh_rate (self->selected_output,
+                                                gtk_switch_get_active (GTK_SWITCH (self->variable_refresh_rate_switch)));
+
+  g_signal_emit_by_name (G_OBJECT (self), "updated", self->selected_output);
+}
+
+
 static void
 cc_display_settings_get_property (GObject    *object,
                                   guint       prop_id,
@@ -749,6 +775,8 @@ cc_display_settings_class_init (CcDisplaySettingsClass *klass)
   gtk_widget_class_bind_template_child (widget_class, CcDisplaySettings, scale_combo_row);
   gtk_widget_class_bind_template_child (widget_class, CcDisplaySettings, underscanning_row);
   gtk_widget_class_bind_template_child (widget_class, CcDisplaySettings, underscanning_switch);
+  gtk_widget_class_bind_template_child (widget_class, CcDisplaySettings, variable_refresh_rate_row);
+  gtk_widget_class_bind_template_child (widget_class, CcDisplaySettings, variable_refresh_rate_switch);
 
   gtk_widget_class_bind_template_callback (widget_class, on_enabled_switch_active_changed_cb);
   gtk_widget_class_bind_template_callback (widget_class, on_orientation_selection_changed_cb);
@@ -756,6 +784,7 @@ cc_display_settings_class_init (CcDisplaySettingsClass *klass)
   gtk_widget_class_bind_template_callback (widget_class, on_resolution_selection_changed_cb);
   gtk_widget_class_bind_template_callback (widget_class, on_scale_selection_changed_cb);
   gtk_widget_class_bind_template_callback (widget_class, on_underscanning_switch_active_changed_cb);
+  gtk_widget_class_bind_template_callback (widget_class, on_variable_refresh_rate_switch_active_changed_cb);
 }
 
 static void
diff --git a/panels/display/cc-display-settings.ui b/panels/display/cc-display-settings.ui
index 6de2ba6ee1..f0c9fa10bc 100644
--- a/panels/display/cc-display-settings.ui
+++ b/panels/display/cc-display-settings.ui
@@ -59,6 +59,21 @@
           </object>
         </child>
         <child>
+          <object class="AdwActionRow" id="variable_refresh_rate_row">
+            <property name="width_request">100</property>
+            <property name="title" translatable="yes">Variable Refresh Rate</property>
+            <property name="activatable-widget">variable_refresh_rate_switch</property>
+            <child>
+              <object class="GtkSwitch" id="variable_refresh_rate_switch">
+                <property name="can_focus">False</property>
+                <property name="halign">end</property>
+                <property name="valign">center</property>
+                <signal name="notify::active" handler="on_variable_refresh_rate_switch_active_changed_cb" swapped="no"/>
+              </object>
+            </child>
+          </object>
+        </child>
+        <child>
           <object class="AdwActionRow" id="underscanning_row">
             <property name="width_request">100</property>
             <property name="title" translatable="yes">Adjust for TV</property>
-- 
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File 734.patch of Package gnome-control-center (Revision 5192113b3a42f719ba2b0f92694824ed)

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