[gnome-builder] libide/tweaks: add font selector widget

[Christian Hergert <chergert src gnome org>]

commit 31b9a030ddb050e92045de60411fb58b296953c7
Author: Christian Hergert <chergert redhat com>
Date:   Fri Aug 12 15:42:53 2022 -0700

    libide/tweaks: add font selector widget
    
    This allows using IdeTweaksFont to change fonts using an AdwActionRow with
    a GtkButton+GtkFontChooserDialog. We avoid GtkFontChooserButton for various
    styling reasons.

 src/libide/tweaks/ide-tweaks-font.c | 360 ++++++++++++++++++++++++++++++++++++
 src/libide/tweaks/ide-tweaks-font.h |  60 ++++++
 src/libide/tweaks/ide-tweaks-init.c |   1 +
 src/libide/tweaks/libide-tweaks.h   |   1 +
 src/libide/tweaks/meson.build       |   2 +
 5 files changed, 424 insertions(+)
---
diff --git a/src/libide/tweaks/ide-tweaks-font.c b/src/libide/tweaks/ide-tweaks-font.c
new file mode 100644
index 000000000..8a97d2de9
--- /dev/null
+++ b/src/libide/tweaks/ide-tweaks-font.c
@@ -0,0 +1,360 @@
+/* ide-tweaks-font.c
+ *
+ * Copyright 2022 Christian Hergert <chergert redhat com>
+ *
+ * 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 3 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/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#define G_LOG_DOMAIN "ide-tweaks-font"
+
+#include "config.h"
+
+#include <glib/gi18n.h>
+
+#include <adwaita.h>
+
+#include "ide-tweaks.h"
+#include "ide-tweaks-font.h"
+
+struct _IdeTweaksFont
+{
+  IdeTweaksWidget parent_instance;
+  IdeTweaksSettings *settings;
+  char *key;
+  char *title;
+  char *subtitle;
+};
+
+enum {
+  PROP_0,
+  PROP_KEY,
+  PROP_SETTINGS,
+  PROP_SUBTITLE,
+  PROP_TITLE,
+  N_PROPS
+};
+
+G_DEFINE_FINAL_TYPE (IdeTweaksFont, ide_tweaks_font, IDE_TYPE_TWEAKS_WIDGET)
+
+static GParamSpec *properties [N_PROPS];
+
+static void
+ide_tweaks_font_dialog_response_cb (GtkFontChooserDialog *dialog,
+                                    int                   response_id,
+                                    GtkButton            *button)
+{
+  g_autofree char *font_name = NULL;
+  IdeSettings *settings;
+  const char *key;
+
+  g_assert (GTK_IS_FONT_CHOOSER_DIALOG (dialog));
+  g_assert (GTK_IS_BUTTON (button));
+
+  settings = g_object_get_data (G_OBJECT (button), "SETTINGS");
+  key = g_object_get_data (G_OBJECT (button), "KEY");
+
+  g_assert (IDE_IS_SETTINGS (settings));
+  g_assert (key != NULL);
+
+  font_name = gtk_font_chooser_get_font (GTK_FONT_CHOOSER (dialog));
+
+  if (response_id == GTK_RESPONSE_OK)
+    ide_settings_set_string (settings, key, font_name);
+
+  gtk_window_destroy (GTK_WINDOW (dialog));
+}
+
+static void
+ide_tweaks_font_button_clicked_cb (IdeTweaksFont *self,
+                                   GtkButton     *button)
+{
+  g_autofree char *font_name = NULL;
+  IdeSettings *settings;
+  const char *key;
+  GtkWidget *dialog;
+  GtkRoot *root;
+
+  g_assert (IDE_IS_TWEAKS_FONT (self));
+  g_assert (GTK_IS_BUTTON (button));
+
+  settings = g_object_get_data (G_OBJECT (button), "SETTINGS");
+  key = g_object_get_data (G_OBJECT (button), "KEY");
+
+  g_assert (IDE_IS_SETTINGS (settings));
+  g_assert (key != NULL);
+
+  font_name = ide_settings_get_string (settings, key);
+  root = gtk_widget_get_root (GTK_WIDGET (button));
+  dialog = gtk_font_chooser_dialog_new (_("Select Font"), GTK_WINDOW (root));
+
+  gtk_font_chooser_set_font (GTK_FONT_CHOOSER (dialog), font_name);
+
+  g_signal_connect_object (dialog,
+                           "response",
+                           G_CALLBACK (ide_tweaks_font_dialog_response_cb),
+                           button,
+                           0);
+
+  gtk_window_present (GTK_WINDOW (dialog));
+}
+
+static GtkWidget *
+ide_tweaks_font_create (IdeTweaksWidget *widget)
+{
+  IdeTweaksFont *self = (IdeTweaksFont *)widget;
+  g_autoptr(IdeSettings) settings = NULL;
+  const char *project_id = NULL;
+  IdeTweaksItem *root;
+  AdwActionRow *row;
+  GtkButton *button;
+
+  g_assert (IDE_IS_TWEAKS_FONT (self));
+
+  if (self->settings == NULL || self->key == NULL)
+    return NULL;
+
+  root = ide_tweaks_item_get_root (IDE_TWEAKS_ITEM (widget));
+  if (!root || !IDE_IS_TWEAKS (root))
+    return NULL;
+
+  project_id = ide_tweaks_get_project_id (IDE_TWEAKS (root));
+  settings = IDE_SETTINGS (ide_tweaks_settings_create_action_group (self->settings, project_id));
+
+  button = g_object_new (GTK_TYPE_BUTTON,
+                         "css-classes", IDE_STRV_INIT ("flat"),
+                         "valign", GTK_ALIGN_CENTER,
+                         NULL);
+  row = g_object_new (ADW_TYPE_ACTION_ROW,
+                      "title", self->title,
+                      "subtitle", self->subtitle,
+                      "activatable-widget", button,
+                      NULL);
+  adw_action_row_add_suffix (row, GTK_WIDGET (button));
+
+  g_signal_connect_object (button,
+                           "clicked",
+                           G_CALLBACK (ide_tweaks_font_button_clicked_cb),
+                           self,
+                           G_CONNECT_SWAPPED);
+
+  ide_settings_bind (settings, self->key, button, "label", G_SETTINGS_BIND_GET);
+
+  g_object_set_data_full (G_OBJECT (button),
+                          "SETTINGS",
+                          g_steal_pointer (&settings),
+                          g_object_unref);
+  g_object_set_data_full (G_OBJECT (button),
+                          "KEY",
+                          g_strdup (self->key),
+                          g_free);
+
+  return GTK_WIDGET (row);
+}
+
+static void
+ide_tweaks_font_dispose (GObject *object)
+{
+  IdeTweaksFont *self = (IdeTweaksFont *)object;
+
+  g_clear_pointer (&self->key, g_free);
+  g_clear_pointer (&self->title, g_free);
+  g_clear_pointer (&self->subtitle, g_free);
+  g_clear_object (&self->settings);
+
+  G_OBJECT_CLASS (ide_tweaks_font_parent_class)->dispose (object);
+}
+
+static void
+ide_tweaks_font_get_property (GObject    *object,
+                              guint       prop_id,
+                              GValue     *value,
+                              GParamSpec *pspec)
+{
+  IdeTweaksFont *self = IDE_TWEAKS_FONT (object);
+
+  switch (prop_id)
+    {
+    case PROP_KEY:
+      g_value_set_string (value, ide_tweaks_font_get_key (self));
+      break;
+
+    case PROP_SETTINGS:
+      g_value_set_object (value, ide_tweaks_font_get_settings (self));
+      break;
+
+    case PROP_SUBTITLE:
+      g_value_set_string (value, ide_tweaks_font_get_subtitle (self));
+      break;
+
+    case PROP_TITLE:
+      g_value_set_string (value, ide_tweaks_font_get_title (self));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    }
+}
+
+static void
+ide_tweaks_font_set_property (GObject      *object,
+                              guint         prop_id,
+                              const GValue *value,
+                              GParamSpec   *pspec)
+{
+  IdeTweaksFont *self = IDE_TWEAKS_FONT (object);
+
+  switch (prop_id)
+    {
+    case PROP_KEY:
+      ide_tweaks_font_set_key (self, g_value_get_string (value));
+      break;
+
+    case PROP_SETTINGS:
+      ide_tweaks_font_set_settings (self, g_value_get_object (value));
+      break;
+
+    case PROP_SUBTITLE:
+      ide_tweaks_font_set_subtitle (self, g_value_get_string (value));
+      break;
+
+    case PROP_TITLE:
+      ide_tweaks_font_set_title (self, g_value_get_string (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    }
+}
+
+static void
+ide_tweaks_font_class_init (IdeTweaksFontClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  IdeTweaksWidgetClass *widget_class = IDE_TWEAKS_WIDGET_CLASS (klass);
+
+  object_class->dispose = ide_tweaks_font_dispose;
+  object_class->get_property = ide_tweaks_font_get_property;
+  object_class->set_property = ide_tweaks_font_set_property;
+
+  widget_class->create = ide_tweaks_font_create;
+
+  properties[PROP_KEY] =
+    g_param_spec_string ("key", NULL, NULL,
+                         NULL,
+                         (G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
+
+  properties[PROP_SETTINGS] =
+    g_param_spec_object ("settings", NULL, NULL,
+                         IDE_TYPE_TWEAKS_SETTINGS,
+                         (G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
+
+  properties[PROP_SUBTITLE] =
+    g_param_spec_string ("subtitle", NULL, NULL,
+                         NULL,
+                         (G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
+
+  properties[PROP_TITLE] =
+    g_param_spec_string ("title", NULL, NULL,
+                         NULL,
+                         (G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_properties (object_class, N_PROPS, properties);
+}
+
+static void
+ide_tweaks_font_init (IdeTweaksFont *self)
+{
+}
+
+/**
+ * ide_tweaks_font_get_settings:
+ * @self: a #IdeTweaksFont
+ *
+ * Gets the settings containing #IdeTweaksFont:key.
+ *
+ * Returns: (transfer none) (nullable): an #IdeTweaksSettings or %NULL
+ */
+IdeTweaksSettings *
+ide_tweaks_font_get_settings (IdeTweaksFont *self)
+{
+  g_return_val_if_fail (IDE_IS_TWEAKS_FONT (self), NULL);
+
+  return self->settings;
+}
+
+const char *
+ide_tweaks_font_get_key (IdeTweaksFont *self)
+{
+  g_return_val_if_fail (IDE_IS_TWEAKS_FONT (self), NULL);
+
+  return self->key;
+}
+
+const char *
+ide_tweaks_font_get_subtitle (IdeTweaksFont *self)
+{
+  g_return_val_if_fail (IDE_IS_TWEAKS_FONT (self), NULL);
+
+  return self->subtitle;
+}
+
+const char *
+ide_tweaks_font_get_title (IdeTweaksFont *self)
+{
+  g_return_val_if_fail (IDE_IS_TWEAKS_FONT (self), NULL);
+
+  return self->title;
+}
+
+void
+ide_tweaks_font_set_settings (IdeTweaksFont     *self,
+                              IdeTweaksSettings *settings)
+{
+  g_return_if_fail (IDE_IS_TWEAKS_FONT (self));
+
+  if (g_set_object (&self->settings, settings))
+    g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_SETTINGS]);
+}
+
+void
+ide_tweaks_font_set_key (IdeTweaksFont *self,
+                           const char    *key)
+{
+  g_return_if_fail (IDE_IS_TWEAKS_FONT (self));
+
+  if (ide_set_string (&self->key, key))
+    g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_KEY]);
+}
+
+void
+ide_tweaks_font_set_subtitle (IdeTweaksFont *self,
+                              const char    *subtitle)
+{
+  g_return_if_fail (IDE_IS_TWEAKS_FONT (self));
+
+  if (ide_set_string (&self->subtitle, subtitle))
+    g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_SUBTITLE]);
+}
+
+void
+ide_tweaks_font_set_title (IdeTweaksFont *self,
+                           const char    *title)
+{
+  g_return_if_fail (IDE_IS_TWEAKS_FONT (self));
+
+  if (ide_set_string (&self->title, title))
+    g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_TITLE]);
+}
diff --git a/src/libide/tweaks/ide-tweaks-font.h b/src/libide/tweaks/ide-tweaks-font.h
new file mode 100644
index 000000000..fb9fe73d0
--- /dev/null
+++ b/src/libide/tweaks/ide-tweaks-font.h
@@ -0,0 +1,60 @@
+/* ide-tweaks-font.h
+ *
+ * Copyright 2022 Christian Hergert <chergert redhat com>
+ *
+ * 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 3 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/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#if !defined (IDE_TWEAKS_INSIDE) && !defined (IDE_TWEAKS_COMPILATION)
+# error "Only <libide-tweaks.h> can be included directly."
+#endif
+
+#include "ide-tweaks-settings.h"
+#include "ide-tweaks-widget.h"
+
+G_BEGIN_DECLS
+
+#define IDE_TYPE_TWEAKS_FONT (ide_tweaks_font_get_type())
+
+IDE_AVAILABLE_IN_ALL
+G_DECLARE_FINAL_TYPE (IdeTweaksFont, ide_tweaks_font, IDE, TWEAKS_FONT, IdeTweaksWidget)
+
+IDE_AVAILABLE_IN_ALL
+IdeTweaksFont     *ide_tweaks_font_new          (void);
+IDE_AVAILABLE_IN_ALL
+const char        *ide_tweaks_font_get_title    (IdeTweaksFont     *self);
+IDE_AVAILABLE_IN_ALL
+void               ide_tweaks_font_set_title    (IdeTweaksFont     *self,
+                                                 const char        *title);
+IDE_AVAILABLE_IN_ALL
+const char        *ide_tweaks_font_get_subtitle (IdeTweaksFont     *self);
+IDE_AVAILABLE_IN_ALL
+void               ide_tweaks_font_set_subtitle (IdeTweaksFont     *self,
+                                                 const char        *subtitle);
+IDE_AVAILABLE_IN_ALL
+const char        *ide_tweaks_font_get_key      (IdeTweaksFont     *self);
+IDE_AVAILABLE_IN_ALL
+void               ide_tweaks_font_set_key      (IdeTweaksFont     *self,
+                                                 const char        *key);
+IDE_AVAILABLE_IN_ALL
+IdeTweaksSettings *ide_tweaks_font_get_settings (IdeTweaksFont     *self);
+IDE_AVAILABLE_IN_ALL
+void               ide_tweaks_font_set_settings (IdeTweaksFont     *self,
+                                                 IdeTweaksSettings *settings);
+
+G_END_DECLS
diff --git a/src/libide/tweaks/ide-tweaks-init.c b/src/libide/tweaks/ide-tweaks-init.c
index a77a943b7..6ebc3bbf4 100644
--- a/src/libide/tweaks/ide-tweaks-init.c
+++ b/src/libide/tweaks/ide-tweaks-init.c
@@ -35,6 +35,7 @@ _ide_tweaks_init (void)
   g_type_ensure (IDE_TYPE_TWEAKS);
   g_type_ensure (IDE_TYPE_TWEAKS_ADDIN);
   g_type_ensure (IDE_TYPE_TWEAKS_FACTORY);
+  g_type_ensure (IDE_TYPE_TWEAKS_FONT);
   g_type_ensure (IDE_TYPE_TWEAKS_GROUP);
   g_type_ensure (IDE_TYPE_TWEAKS_ITEM);
   g_type_ensure (IDE_TYPE_TWEAKS_PAGE);
diff --git a/src/libide/tweaks/libide-tweaks.h b/src/libide/tweaks/libide-tweaks.h
index 699ffde7e..2d430de99 100644
--- a/src/libide/tweaks/libide-tweaks.h
+++ b/src/libide/tweaks/libide-tweaks.h
@@ -24,6 +24,7 @@
 # include "ide-tweaks.h"
 # include "ide-tweaks-addin.h"
 # include "ide-tweaks-factory.h"
+# include "ide-tweaks-font.h"
 # include "ide-tweaks-group.h"
 # include "ide-tweaks-item.h"
 # include "ide-tweaks-page.h"
diff --git a/src/libide/tweaks/meson.build b/src/libide/tweaks/meson.build
index 5630659ce..4a5621733 100644
--- a/src/libide/tweaks/meson.build
+++ b/src/libide/tweaks/meson.build
@@ -11,6 +11,7 @@ libide_tweaks_public_headers = [
   'ide-tweaks.h',
   'ide-tweaks-addin.h',
   'ide-tweaks-factory.h',
+  'ide-tweaks-font.h',
   'ide-tweaks-group.h',
   'ide-tweaks-item.h',
   'ide-tweaks-page.h',
@@ -33,6 +34,7 @@ libide_tweaks_public_sources = [
   'ide-tweaks.c',
   'ide-tweaks-addin.c',
   'ide-tweaks-factory.c',
+  'ide-tweaks-font.c',
   'ide-tweaks-group.c',
   'ide-tweaks-item.c',
   'ide-tweaks-page.c',