level-bar: introduce GtkLevelBar

Similar to CcStrengthBar from gnome-control-center, but more generic and
with thorough CSS styling support.

https://bugzilla.gnome.org/show_bug.cgi?id=677892

1 files changed, 127 insertions, 0 deletions

diff --git a/gtk/gtklevelbar.h b/gtk/gtklevelbar.h
new file mode 100644
index 0000000000..60dae3b96c
--- /dev/null
+++ b/gtk/gtklevelbar.h
@@ -0,0 +1,127 @@
+/* GTK - The GIMP Toolkit
+ * Copyright © 2012 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Cosimo Cecchi <cosimoc@gnome.org>
+ *
+ */
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#ifndef __GTK_LEVEL_BAR_H__
+#define __GTK_LEVEL_BAR_H__
+
+#include <gtk/gtkwidget.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_LEVEL_BAR            (gtk_level_bar_get_type ())
+#define GTK_LEVEL_BAR(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_LEVEL_BAR, GtkLevelBar))
+#define GTK_LEVEL_BAR_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_LEVEL_BAR, GtkLevelBarClass))
+#define GTK_IS_LEVEL_BAR(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_LEVEL_BAR))
+#define GTK_IS_LEVEL_BAR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_LEVEL_BAR))
+#define GTK_LEVEL_BAR_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_LEVEL_BAR, GtkLevelBarClass))
+
+/**
+ * GTK_LEVEL_BAR_OFFSET_LOW:
+ *
+ * The name used for the stock low offset included by #GtkLevelBar.
+ *
+ * Since: 3.6
+ */
+#define GTK_LEVEL_BAR_OFFSET_LOW  "low"
+
+/**
+ * GTK_LEVEL_BAR_OFFSET_HIGH:
+ *
+ * The name used for the stock high offset included by #GtkLevelBar.
+ *
+ * Since: 3.6
+ */
+#define GTK_LEVEL_BAR_OFFSET_HIGH "high"
+
+typedef struct _GtkLevelBarClass   GtkLevelBarClass;
+typedef struct _GtkLevelBar        GtkLevelBar;
+typedef struct _GtkLevelBarPrivate GtkLevelBarPrivate;
+
+struct _GtkLevelBar {
+  /*< private >*/
+  GtkWidget parent;
+
+  GtkLevelBarPrivate *priv;
+};
+
+struct _GtkLevelBarClass {
+  /*< private >*/
+  GtkWidgetClass parent_class;
+
+  void (* offset_changed) (GtkLevelBar *self,
+                           const gchar *name);
+
+  /* padding for future class expansion */
+  gpointer padding[16];
+};
+
+GDK_AVAILABLE_IN_3_6
+GType      gtk_level_bar_get_type           (void) G_GNUC_CONST;
+
+GDK_AVAILABLE_IN_3_6
+GtkWidget *gtk_level_bar_new                (void);
+
+GDK_AVAILABLE_IN_3_6
+GtkWidget *gtk_level_bar_new_for_interval   (gdouble      min_value,
+                                             gdouble      max_value);
+
+GDK_AVAILABLE_IN_3_6
+void       gtk_level_bar_set_mode           (GtkLevelBar *self,
+                                             GtkLevelBarMode mode);
+GDK_AVAILABLE_IN_3_6
+GtkLevelBarMode gtk_level_bar_get_mode      (GtkLevelBar *self);
+
+GDK_AVAILABLE_IN_3_6
+void       gtk_level_bar_set_value          (GtkLevelBar *self,
+                                             gdouble      value);
+GDK_AVAILABLE_IN_3_6
+gdouble    gtk_level_bar_get_value          (GtkLevelBar *self);
+
+GDK_AVAILABLE_IN_3_6
+void       gtk_level_bar_set_min_value      (GtkLevelBar *self,
+                                             gdouble      value);
+GDK_AVAILABLE_IN_3_6
+gdouble    gtk_level_bar_get_min_value      (GtkLevelBar *self);
+
+GDK_AVAILABLE_IN_3_6
+void       gtk_level_bar_set_max_value      (GtkLevelBar *self,
+                                             gdouble      value);
+GDK_AVAILABLE_IN_3_6
+gdouble    gtk_level_bar_get_max_value      (GtkLevelBar *self);
+
+GDK_AVAILABLE_IN_3_6
+void       gtk_level_bar_add_offset_value   (GtkLevelBar *self,
+                                             const gchar *name,
+                                             gdouble      value);
+GDK_AVAILABLE_IN_3_6
+void       gtk_level_bar_remove_offset_value (GtkLevelBar *self,
+                                              const gchar *name);
+GDK_AVAILABLE_IN_3_6
+gboolean   gtk_level_bar_get_offset_value   (GtkLevelBar *self,
+                                             const gchar *name,
+                                             gdouble     *value);
+
+G_END_DECLS
+
+#endif /* __GTK_LEVEL_BAR_H__ */