[gnome-flashback] screensaver: add GfInfoBar

[Alberts Muktupāvels <muktupavels src gnome org>]

commit d644d6cab3852d6659776c1226b21790a1af5c44
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Tue Dec 10 21:52:49 2019 +0200

    screensaver: add GfInfoBar

 gnome-flashback/libscreensaver/Makefile.am   |   2 +
 gnome-flashback/libscreensaver/gf-info-bar.c | 158 +++++++++++++++++++++++++++
 gnome-flashback/libscreensaver/gf-info-bar.h |  37 +++++++
 3 files changed, 197 insertions(+)
---
diff --git a/gnome-flashback/libscreensaver/Makefile.am b/gnome-flashback/libscreensaver/Makefile.am
index 4cda6d4..aacf5e5 100644
--- a/gnome-flashback/libscreensaver/Makefile.am
+++ b/gnome-flashback/libscreensaver/Makefile.am
@@ -17,6 +17,8 @@ libscreensaver_la_CFLAGS = \
        $(NULL)
 
 libscreensaver_la_SOURCES = \
+       gf-info-bar.c \
+       gf-info-bar.h \
        gf-listener.c \
        gf-listener.h \
        gf-prefs.c \
diff --git a/gnome-flashback/libscreensaver/gf-info-bar.c b/gnome-flashback/libscreensaver/gf-info-bar.c
new file mode 100644
index 0000000..91759fc
--- /dev/null
+++ b/gnome-flashback/libscreensaver/gf-info-bar.c
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2004-2008 William Jon McCann
+ * Copyright (C) 2008-2011 Red Hat, Inc
+ * Copyright (C) 2019 Alberts Muktupāvels
+ *
+ * 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/>.
+ */
+
+#include "config.h"
+#include "gf-info-bar.h"
+
+#define INFO_BAR_SECONDS 30
+
+struct _GfInfoBar
+{
+  GtkInfoBar parent;
+
+  GtkWidget *content_box;
+
+  guint      timeout_id;
+};
+
+G_DEFINE_TYPE (GfInfoBar, gf_info_bar, GTK_TYPE_INFO_BAR)
+
+static void
+update_content (GfInfoBar  *self,
+                const char *summary,
+                const char *body,
+                const char *icon)
+{
+  GtkWidget *content_area;
+  GtkWidget *image;
+  GtkWidget *vbox;
+  char *markup;
+  GtkWidget *label;
+
+  content_area = gtk_info_bar_get_content_area (GTK_INFO_BAR (self));
+
+  if (self->content_box != NULL)
+    gtk_container_remove (GTK_CONTAINER (content_area), self->content_box);
+
+  self->content_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 8);
+  gtk_box_pack_start (GTK_BOX (content_area), self->content_box, TRUE, FALSE, 0);
+  gtk_widget_show (self->content_box);
+
+  image = gtk_image_new_from_icon_name (icon, GTK_ICON_SIZE_DIALOG);
+  gtk_box_pack_start (GTK_BOX (self->content_box), image, FALSE, FALSE, 0);
+  gtk_widget_set_valign (image, GTK_ALIGN_START);
+  gtk_widget_show (image);
+
+  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
+  gtk_box_pack_start (GTK_BOX (self->content_box), vbox, FALSE, FALSE, 0);
+  gtk_widget_show (vbox);
+
+  markup = g_strdup_printf ("<b>%s</b>", summary);
+  label = gtk_label_new (markup);
+  g_free (markup);
+
+  gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+  gtk_label_set_use_markup (GTK_LABEL (label), TRUE);
+  gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
+
+  gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);
+  gtk_widget_show (label);
+
+  if (body != NULL)
+    {
+      markup = g_strdup_printf ("<small>%s</small>", body);
+      label = gtk_label_new (markup);
+      g_free (markup);
+
+      gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+      gtk_label_set_use_markup (GTK_LABEL (label), TRUE);
+      gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
+
+      gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);
+      gtk_widget_show (label);
+    }
+}
+
+static gboolean
+message_timeout_cb (gpointer user_data)
+{
+  GfInfoBar *self;
+
+  self = GF_INFO_BAR (user_data);
+  self->timeout_id = 0;
+
+  gtk_widget_hide (GTK_WIDGET (self));
+
+  return G_SOURCE_REMOVE;
+}
+
+static void
+gf_info_bar_dispose (GObject *object)
+{
+  GfInfoBar *self;
+
+  self = GF_INFO_BAR (object);
+
+  if (self->timeout_id != 0)
+    {
+      g_source_remove (self->timeout_id);
+      self->timeout_id = 0;
+    }
+
+  G_OBJECT_CLASS (gf_info_bar_parent_class)->dispose (object);
+}
+
+static void
+gf_info_bar_class_init (GfInfoBarClass *self_class)
+{
+  GObjectClass *object_class;
+
+  object_class = G_OBJECT_CLASS (self_class);
+
+  object_class->dispose = gf_info_bar_dispose;
+}
+
+static void
+gf_info_bar_init (GfInfoBar *self)
+{
+}
+
+GtkWidget *
+gf_info_bar_new (void)
+{
+  return g_object_new (GF_TYPE_INFO_BAR,
+                       NULL);
+}
+
+void
+gf_info_bar_show_message (GfInfoBar  *self,
+                          const char *summary,
+                          const char *body,
+                          const char *icon)
+{
+  update_content (self, summary, body, icon);
+  gtk_widget_show (GTK_WIDGET (self));
+
+  if (self->timeout_id != 0)
+    g_source_remove (self->timeout_id);
+
+  self->timeout_id = g_timeout_add_seconds (INFO_BAR_SECONDS,
+                                            message_timeout_cb,
+                                            self);
+}
diff --git a/gnome-flashback/libscreensaver/gf-info-bar.h b/gnome-flashback/libscreensaver/gf-info-bar.h
new file mode 100644
index 0000000..041b72e
--- /dev/null
+++ b/gnome-flashback/libscreensaver/gf-info-bar.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2019 Alberts Muktupāvels
+ *
+ * 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/>.
+ */
+
+#ifndef GF_INFO_BAR_H
+#define GF_INFO_BAR_H
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define GF_TYPE_INFO_BAR (gf_info_bar_get_type ())
+G_DECLARE_FINAL_TYPE (GfInfoBar, gf_info_bar, GF, INFO_BAR, GtkInfoBar)
+
+GtkWidget *gf_info_bar_new          (void);
+
+void       gf_info_bar_show_message (GfInfoBar  *self,
+                                     const char *summary,
+                                     const char *body,
+                                     const char *icon);
+
+G_END_DECLS
+
+#endif