1 files changed, 257 insertions, 0 deletions
diff --git a/panels/region/cc-format-preview.c b/panels/region/cc-format-preview.c
new file mode 100644
index 0000000..61b434b
--- /dev/null
+++ b/panels/region/cc-format-preview.c
@@ -0,0 +1,257 @@
+/* cc-format-preview.c
+ *
+ * Copyright (C) 2013 Red Hat, Inc.
+ * Copyright (C) 2020 System76, 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/>.
+ *
+ * Written by:
+ *     Matthias Clasen
+ *     Ian Douglas Scott <idscott@system76.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "cc-format-preview.h"
+
+#include <errno.h>
+#include <locale.h>
+#include <langinfo.h>
+#include <string.h>
+#include <glib/gi18n.h>
+
+struct _CcFormatPreview {
+  GtkBox     parent_instance;
+
+  GtkWidget *date_format_label;
+  GtkWidget *date_time_format_label;
+  GtkWidget *measurement_format_label;
+  GtkWidget *number_format_label;
+  GtkWidget *paper_format_label;
+  GtkWidget *time_format_label;
+
+  gchar     *region;
+};
+
+enum
+{
+  PROP_0,
+  PROP_REGION
+};
+
+G_DEFINE_TYPE (CcFormatPreview, cc_format_preview, GTK_TYPE_BOX)
+
+static void
+display_date (GtkWidget *label, GDateTime *dt, const gchar *format)
+{
+  g_autofree gchar *s = g_date_time_format (dt, format);
+  gtk_label_set_text (GTK_LABEL (label), g_strstrip (s));
+}
+
+static void
+update_format_examples (CcFormatPreview *self)
+{
+  const gchar *region = self->region;
+  locale_t locale;
+  locale_t old_locale;
+  g_autoptr(GDateTime) dt = NULL;
+  g_autofree gchar *s = NULL;
+#ifdef LC_MEASUREMENT
+  const gchar *fmt;
+#endif
+  g_autoptr(GtkPaperSize) paper = NULL;
+
+  if (region == NULL || region[0] == '\0')
+    return;
+
+  locale = newlocale (LC_TIME_MASK, region, (locale_t) 0);
+  if (locale == (locale_t) 0)
+    g_warning ("Failed to create locale %s: %s", region, g_strerror (errno));
+  else
+    old_locale = uselocale (locale);
+
+  dt = g_date_time_new_now_local ();
+  display_date (self->date_format_label, dt, "%x");
+  display_date (self->time_format_label, dt, "%X");
+  display_date (self->date_time_format_label, dt, "%c");
+
+  if (locale != (locale_t) 0)
+    {
+      uselocale (old_locale);
+      freelocale (locale);
+    }
+
+  locale = newlocale (LC_NUMERIC_MASK, region, (locale_t) 0);
+  if (locale == (locale_t) 0)
+    g_warning ("Failed to create locale %s: %s", region, g_strerror (errno));
+  else
+    old_locale = uselocale (locale);
+
+  s = g_strdup_printf ("%'.2f", 123456789.00);
+  gtk_label_set_text (GTK_LABEL (self->number_format_label), s);
+
+  if (locale != (locale_t) 0)
+    {
+      uselocale (old_locale);
+      freelocale (locale);
+    }
+
+#if 0
+  locale = newlocale (LC_MONETARY_MASK, region, (locale_t) 0);
+  if (locale == (locale_t) 0)
+    g_warning ("Failed to create locale %s: %s", region, g_strerror (errno));
+  else
+    old_locale = uselocale (locale);
+
+  num_info = localeconv ();
+  if (num_info != NULL)
+    gtk_label_set_text (GTK_LABEL (self->currency_format_label), num_info->currency_symbol);
+
+  if (locale != (locale_t) 0)
+    {
+      uselocale (old_locale);
+      freelocale (locale);
+    }
+#endif
+
+#ifdef LC_MEASUREMENT
+  locale = newlocale (LC_MEASUREMENT_MASK, region, (locale_t) 0);
+  if (locale == (locale_t) 0)
+    g_warning ("Failed to create locale %s: %s", region, g_strerror (errno));
+  else
+    old_locale = uselocale (locale);
+
+  fmt = nl_langinfo (_NL_MEASUREMENT_MEASUREMENT);
+  if (fmt && *fmt == 2)
+    gtk_label_set_text (GTK_LABEL (self->measurement_format_label), C_("measurement format", "Imperial"));
+  else
+    gtk_label_set_text (GTK_LABEL (self->measurement_format_label), C_("measurement format", "Metric"));
+
+  if (locale != (locale_t) 0)
+    {
+      uselocale (old_locale);
+      freelocale (locale);
+    }
+#endif
+
+#ifdef LC_PAPER
+  locale = newlocale (LC_PAPER_MASK, region, (locale_t) 0);
+  if (locale == (locale_t) 0)
+    g_warning ("Failed to create locale %s: %s", region, g_strerror (errno));
+  else
+    old_locale = uselocale (locale);
+
+  paper = gtk_paper_size_new (gtk_paper_size_get_default ());
+  gtk_label_set_text (GTK_LABEL (self->paper_format_label), gtk_paper_size_get_display_name (paper));
+
+  if (locale != (locale_t) 0)
+    {
+      uselocale (old_locale);
+      freelocale (locale);
+    }
+#endif
+}
+
+static void
+cc_format_preview_set_property (GObject      *object,
+                                guint         prop_id,
+                                const GValue *value,
+                                GParamSpec   *pspec)
+{
+  CcFormatPreview *self;
+
+  self = CC_FORMAT_PREVIEW (object);
+
+  switch (prop_id) {
+  case PROP_REGION:
+    cc_format_preview_set_region (self, g_value_get_string (value));
+    break;
+  default:
+    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    break;
+  }
+}
+
+static void
+cc_format_preview_get_property (GObject    *object,
+                                guint       prop_id,
+                                GValue     *value,
+                                GParamSpec *pspec)
+{
+  CcFormatPreview *self;
+
+  self = CC_FORMAT_PREVIEW (object);
+
+  switch (prop_id) {
+  case PROP_REGION:
+    g_value_set_string (value, self->region);
+    break;
+  default:
+    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    break;
+  }
+}
+
+static void
+cc_format_preview_finalize (GObject *object)
+{
+  CcFormatPreview *self = CC_FORMAT_PREVIEW (object);
+
+  g_clear_pointer (&self->region, g_free);
+
+  G_OBJECT_CLASS (cc_format_preview_parent_class)->finalize (object);
+}
+
+void
+cc_format_preview_class_init (CcFormatPreviewClass *klass)
+{
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+  object_class->get_property = cc_format_preview_get_property;
+  object_class->set_property = cc_format_preview_set_property;
+  object_class->finalize = cc_format_preview_finalize;
+
+  g_object_class_install_property (object_class,
+                                   PROP_REGION,
+                                   g_param_spec_string ("region",
+                                                        "region",
+                                                        "region",
+                                                        NULL,
+                                                        G_PARAM_READWRITE));
+
+  gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/control-center/region/cc-format-preview.ui");
+
+  gtk_widget_class_bind_template_child (widget_class, CcFormatPreview, date_format_label);
+  gtk_widget_class_bind_template_child (widget_class, CcFormatPreview, date_time_format_label);
+  gtk_widget_class_bind_template_child (widget_class, CcFormatPreview, measurement_format_label);
+  gtk_widget_class_bind_template_child (widget_class, CcFormatPreview, number_format_label);
+  gtk_widget_class_bind_template_child (widget_class, CcFormatPreview, paper_format_label);
+  gtk_widget_class_bind_template_child (widget_class, CcFormatPreview, time_format_label);
+}
+
+void
+cc_format_preview_init (CcFormatPreview *self)
+{
+  gtk_widget_init_template (GTK_WIDGET (self));
+}
+
+void
+cc_format_preview_set_region (CcFormatPreview *preview,
+                              const gchar     *region)
+{
+  g_free (preview->region);
+  preview->region = g_strdup (region);
+  update_format_examples (preview);
+}