wayland: Set gtk-decoration-layout

Pick up the setting from the org.gnome.desktop.wm.preferences schema
if available. It is slightly more involved than other settings, as
the actual button names used in the schema differ from the ones we
use, so we need an additional translation step.

https://bugzilla.gnome.org/show_bug.cgi?id=731273

gdk/wayland/Makefile.am

@@ -44,7 +44,9 @@ libgdk_wayland_la_SOURCES =			\
 	gdkselection-wayland.c			\
 	gdkwindow-wayland.c			\
 	gdkwayland.h				\
-	gdkprivate-wayland.h
+	gdkprivate-wayland.h			\
+	wm-button-layout-translation.c		\
+	wm-button-layout-translation.h
 
 libgdkinclude_HEADERS =				\
 	gdkwayland.h

gdk/wayland/gdkscreen-wayland.c

@@ -29,6 +29,8 @@
 #include "gdkwayland.h"
 #include "gdkprivate-wayland.h"
 
+#include "wm-button-layout-translation.h"
+
 typedef struct _GdkWaylandScreen      GdkWaylandScreen;
 typedef struct _GdkWaylandScreenClass GdkWaylandScreenClass;
 
@@ -511,6 +513,7 @@ static TranslationEntry translations[] = {
   { "org.gnome.desktop.sound", "input-feedback-sounds", "gtk-enable-input-feedback-sounds", G_TYPE_BOOLEAN, { . b = FALSE } },
   { "org.gnome.desktop.privacy", "recent-files-max-age", "gtk-recent-files-max-age", G_TYPE_INT, { .i = 30 } },
   { "org.gnome.desktop.privacy", "remember-recent-files",    "gtk-recent-files-enabled", G_TYPE_BOOLEAN, { .b = TRUE } },
+  { "org.gnome.desktop.wm.preferences", "button-layout",    "gtk-decoration-layout", G_TYPE_STRING, { .s = "menu:close" } },
   { "org.gnome.settings-daemon.plugins.xsettings", "antialiasing", "gtk-xft-antialias", G_TYPE_NONE, { .i = 0 } },
   { "org.gnome.settings-daemon.plugins.xsettings", "hinting", "gtk-xft-hinting", G_TYPE_NONE, { .i = 0 } },
   { "org.gnome.settings-daemon.plugins.xsettings", "hinting", "gtk-xft-hintstyle", G_TYPE_NONE, { .i = 0 } },
@@ -681,6 +684,31 @@ set_value_from_entry (GdkScreen        *screen,
     }
 }
 
+static void
+set_decoration_layout_from_entry (GdkScreen        *screen,
+                                  TranslationEntry *entry,
+                                  GValue           *value)
+{
+  GdkWaylandScreen *screen_wayland = GDK_WAYLAND_SCREEN (screen);
+  GSettings *settings;
+
+  settings = (GSettings *)g_hash_table_lookup (screen_wayland->settings, entry->schema);
+
+  if (settings)
+    {
+      gchar *s = g_settings_get_string (settings, entry->key);
+
+      translate_wm_button_layout_to_gtk (s);
+      g_value_set_string (value, s);
+
+      g_free (s);
+    }
+  else
+    {
+      g_value_set_static_string (value, entry->fallback.s);
+    }
+}
+
 static gboolean
 set_capability_setting (GdkScreen                 *screen,
 			GValue                    *value,
@@ -705,7 +733,10 @@ gdk_wayland_screen_get_setting (GdkScreen   *screen,
   entry = find_translation_entry_by_setting (name);
   if (entry != NULL)
     {
-      set_value_from_entry (screen, entry, value);
+      if (strcmp (name, "gtk-decoration-layout") == 0)
+        set_decoration_layout_from_entry (screen, entry, value);
+      else
+        set_value_from_entry (screen, entry, value);
       return TRUE;
    }
 

gdk/wayland/wm-button-layout-translation.c

+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2014 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author:  Florian Müllner <fmuellner@gnome.org>
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <glib.h>
+
+#include "wm-button-layout-translation.h"
+
+static void
+translate_buttons (char *layout, int *len_p)
+{
+  char *strp = layout, *button;
+  int len = 0;
+
+  if (!layout || !*layout)
+    goto out;
+
+  while ((button = strsep (&strp, ",")))
+    {
+      char *gtkbutton;
+
+      if (strcmp (button, "menu") == 0)
+        gtkbutton = "icon";
+      else if (strcmp (button, "appmenu") == 0)
+        gtkbutton = "menu";
+      else if (strcmp (button, "minimize") == 0)
+        gtkbutton = "minimize";
+      else if (strcmp (button, "maximize") == 0)
+        gtkbutton = "maximize";
+      else if  (strcmp (button, "close") == 0)
+        gtkbutton = "close";
+      else
+        continue;
+
+      if (len)
+        layout[len++] = ',';
+
+      strcpy (layout + len, gtkbutton);
+      len += strlen (gtkbutton);
+    }
+  layout[len] = '\0';
+
+out:
+  if (len_p)
+    *len_p = len;
+}
+
+void
+translate_wm_button_layout_to_gtk (char *layout)
+{
+  char *strp = layout, *left_buttons, *right_buttons;
+  int left_len, right_len = 0;
+
+  left_buttons = strsep (&strp, ":");
+  right_buttons = strp;
+
+  translate_buttons (left_buttons, &left_len);
+  memmove (layout, left_buttons, left_len);
+
+  if (strp == NULL)
+    goto out; /* no ":" in layout */
+
+  layout[left_len++] = ':';
+
+  translate_buttons (right_buttons, &right_len);
+  memmove (layout + left_len, right_buttons, right_len);
+
+out:
+  layout[left_len + right_len] = '\0';
+}

gdk/wayland/wm-button-layout-translation.h

+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2014 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author:  Florian Müllner <fmuellner@gnome.org>
+ */
+
+#ifndef __WM_BUTTON_LAYOUT_TRANSLATION__
+#define __WM_BUTTON_LAYOUT_TRANSLATION__
+
+void translate_wm_button_layout_to_gtk (char *layout);
+
+#endif