gnome-control-center/multitasking-add-window-control-settings.patch

From b404400352ab118b77bf8ddf42db477087a1ef87 Mon Sep 17 00:00:00 2001
From: Felipe Borges <felipeborges@gnome.org>
Date: Fri, 6 Jun 2025 10:30:00 +0200
Subject: [PATCH] multitasking: Introduce "Window Controls" section

This allows setting the visibility of the minimize and maximize
window control buttons. These buttons are standard on other platforms
and some users/vendors might opt to expose them.

This setting is present in GNOME Tweaks but given its not available in
RHEL, we are bringing a subset of this setting to GNOME Settings.

By design:

  * We don't allow reordering the buttons neither moving them to the
    opposite side of the window.

  * We only allow toggling the visibility of "maximize" and/or
    "minimize" buttons.

  * The "close" button is always visible. The pre-dermined order is
    always: "minimize,maximize,close".

There are prior discussions about this feature in:
- Teams/Design/whiteboards#87
- #2006
- https://discourse.gnome.org/t/titlebar-buttons/10669/32

Related: RHEL-22606
---
 panels/multitasking/cc-multitasking-panel.c  | 54 ++++++++++++++++++++
 panels/multitasking/cc-multitasking-panel.ui | 21 ++++++++
 2 files changed, 75 insertions(+)

diff --git a/panels/multitasking/cc-multitasking-panel.c b/panels/multitasking/cc-multitasking-panel.c
index be3d3dec7..cb667df3e 100644
--- a/panels/multitasking/cc-multitasking-panel.c
+++ b/panels/multitasking/cc-multitasking-panel.c
@@ -41,6 +41,8 @@ struct _CcMultitaskingPanel
   GtkCheckButton  *fixed_workspaces_radio;
   CcIllustratedRow *hot_corner_row;
   GtkSwitch       *hot_corner_switch;
+  AdwSwitchRow    *maximize_row;
+  AdwSwitchRow    *minimize_row;
   AdwSpinRow      *number_of_workspaces_spin_row;
   GtkCheckButton  *workspaces_primary_display_radio;
   GtkCheckButton  *workspaces_span_displays_radio;
@@ -48,6 +50,48 @@ struct _CcMultitaskingPanel
 
 CC_PANEL_REGISTER (CcMultitaskingPanel, cc_multitasking_panel)
 
+static void
+set_window_controls (CcMultitaskingPanel *self)
+{
+  g_autofree gchar *layout = NULL;
+  g_autofree gchar *topbar_layout = NULL;
+  gboolean maximize, minimize;
+
+  maximize = adw_switch_row_get_active (self->maximize_row);;
+  minimize = adw_switch_row_get_active (self->minimize_row);;
+
+  if (minimize && maximize)
+    layout = g_strdup ("minimize,maximize,");
+  else if (minimize)
+    layout = g_strdup ("minimize,");
+  else if (maximize)
+    layout = g_strdup ("maximize,");
+  else
+    layout = g_strdup ("");
+
+  topbar_layout = g_strdup_printf ("appmnenu:%sclose", layout);
+  g_settings_set_string (self->wm_settings,
+                         "button-layout",
+                         topbar_layout);
+}
+
+static void
+get_window_controls (CcMultitaskingPanel *self)
+{
+  g_autofree gchar *layout = NULL;
+
+  layout = g_settings_get_string (self->wm_settings, "button-layout");
+
+  g_signal_handlers_block_by_func (self->maximize_row, set_window_controls, self);
+  g_signal_handlers_block_by_func (self->minimize_row, set_window_controls, self);
+
+  adw_switch_row_set_active (self->maximize_row, g_strrstr (layout, "maximize") != NULL);
+  adw_switch_row_set_active (self->minimize_row, g_strrstr (layout, "minimize") != NULL);
+
+  g_signal_handlers_unblock_by_func (self->maximize_row, set_window_controls, self);
+  g_signal_handlers_unblock_by_func (self->minimize_row, set_window_controls, self);
+}
+
 /* GObject overrides */
 
 static void
@@ -83,9 +127,13 @@ cc_multitasking_panel_class_init (CcMultitaskingPanelClass *klass)
   gtk_widget_class_bind_template_child (widget_class, CcMultitaskingPanel, fixed_workspaces_radio);
   gtk_widget_class_bind_template_child (widget_class, CcMultitaskingPanel, hot_corner_row);
   gtk_widget_class_bind_template_child (widget_class, CcMultitaskingPanel, hot_corner_switch);
+  gtk_widget_class_bind_template_child (widget_class, CcMultitaskingPanel, maximize_row);
+  gtk_widget_class_bind_template_child (widget_class, CcMultitaskingPanel, minimize_row);
   gtk_widget_class_bind_template_child (widget_class, CcMultitaskingPanel, number_of_workspaces_spin_row);
   gtk_widget_class_bind_template_child (widget_class, CcMultitaskingPanel, workspaces_primary_display_radio);
   gtk_widget_class_bind_template_child (widget_class, CcMultitaskingPanel, workspaces_span_displays_radio);
+
+  gtk_widget_class_bind_template_callback (widget_class, set_window_controls);
 }
 
 static void
@@ -138,6 +186,12 @@ cc_multitasking_panel_init (CcMultitaskingPanel *self)
                    "value",
                    G_SETTINGS_BIND_DEFAULT | G_SETTINGS_BIND_NO_SENSITIVITY);
 
+  g_signal_connect_swapped (self->wm_settings,
+                            "changed::button-layout",
+                            G_CALLBACK (get_window_controls),
+                            self);
+  get_window_controls (self);
+
   self->shell_settings = g_settings_new ("org.gnome.shell.app-switcher");
 
   if (g_settings_get_boolean (self->shell_settings, "current-workspace-only"))
diff --git a/panels/multitasking/cc-multitasking-panel.ui b/panels/multitasking/cc-multitasking-panel.ui
index 019e46430..5e2f5742a 100644
--- a/panels/multitasking/cc-multitasking-panel.ui
+++ b/panels/multitasking/cc-multitasking-panel.ui
@@ -97,6 +97,27 @@
               </object>
             </child>
 
+            <!-- Window Controls -->
+            <child>
+              <object class="AdwPreferencesGroup">
+                <property name="title" translatable="yes">Window Controls</property>
+                <child>
+                  <object class="AdwSwitchRow" id="maximize_row">
+                    <property name="use-underline">True</property>
+                    <property name="title" translatable="yes">_Maximize</property>
+                    <signal name="notify::active" handler="set_window_controls" object="CcMultitaskingPanel" swapped="yes"/>
+                  </object>
+                </child>
+                <child>
+                  <object class="AdwSwitchRow" id="minimize_row">
+                    <property name="use-underline">True</property>
+                    <property name="title" translatable="yes">Minimi_ze</property>
+                    <signal name="notify::active" handler="set_window_controls" object="CcMultitaskingPanel" swapped="yes"/>
+                  </object>
+                </child>
+              </object>
+            </child>
+
             <child>
               <object class="AdwPreferencesGroup">
                 <property name="title" translatable="yes">Multi-Monitor</property>
-- 
2.47.1