From dd3ed8035185983d383eaff223985d6832f84db5 Mon Sep 17 00:00:00 2001
From: Emilio Pozuelo Monfort <emilio.pozuelo@collabora.co.uk>
Date: Fri, 13 Dec 2013 10:32:14 +0100
Subject: Add a volume control widget to the panel

---
 shell/sound-applet.c | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 shell/sound-applet.c

(limited to 'shell/sound-applet.c')

diff --git a/shell/sound-applet.c b/shell/sound-applet.c
new file mode 100644
index 0000000..22e8d19
--- /dev/null
+++ b/shell/sound-applet.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2013 Collabora Ltd.
+ *
+ * Author: Emilio Pozuelo Monfort <emilio.pozuelo@collabora.co.uk>
+ */
+
+#include "config.h"
+
+#include "sound-applet.h"
+
+#include <gio/gio.h>
+#include <gtk/gtk.h>
+
+enum {
+  PROP_0,
+};
+
+struct WestonGtkSoundAppletPrivate {
+  GtkWidget *image;
+  GtkWidget *scale;
+
+  GSettings *settings;
+};
+
+G_DEFINE_TYPE(WestonGtkSoundApplet, weston_gtk_sound_applet, GTK_TYPE_BOX)
+
+static void
+value_changed_cb (GtkRange *range,
+    WestonGtkSoundApplet *self)
+{
+  GError *error = NULL;
+  gdouble value;
+  gchar *cmd;
+
+  value = gtk_range_get_value (range);
+
+  cmd = g_strdup_printf ("amixer set PCM %d%%", (int) value);
+
+  g_spawn_command_line_async (cmd, &error);
+
+  if (error)
+    {
+      g_print ("failed to set volume: %s\n", error->message);
+      g_clear_error (&error);
+    }
+
+  g_free (cmd);
+}
+
+static void
+weston_gtk_sound_applet_dispose (GObject *object)
+{
+  WestonGtkSoundApplet *self = WESTON_GTK_SOUND_APPLET (object);
+
+  g_clear_object (&self->priv->settings);
+
+  G_OBJECT_CLASS (weston_gtk_sound_applet_parent_class)->dispose (object);
+}
+
+static void
+weston_gtk_sound_applet_init (WestonGtkSoundApplet *self)
+{
+  self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
+                                            WESTON_GTK_TYPE_SOUND_APPLET,
+                                            WestonGtkSoundAppletPrivate);
+
+  self->priv->settings = g_settings_new ("org.raspberrypi.weston-gtk-shell");
+
+  gtk_orientable_set_orientation (GTK_ORIENTABLE (self), GTK_ORIENTATION_HORIZONTAL);
+
+  /* FIXME: make this nicer. GtkVolumeButton doesn't work well for us
+   * because the scale will be placed behind the panel. But we can
+   * mimic/reimplement it... or fix GtkVolumeButton.
+   */
+  self->priv->image = gtk_image_new_from_icon_name ("audio-volume-high", GTK_ICON_SIZE_MENU);
+  gtk_box_pack_start (GTK_BOX (self), self->priv->image, FALSE, FALSE, 0);
+
+  self->priv->scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL,
+      0, 100, 1);
+  gtk_scale_set_draw_value (GTK_SCALE (self->priv->scale), FALSE);
+  gtk_widget_set_size_request (self->priv->scale, 100, -1);
+  g_signal_connect (self->priv->scale, "value-changed",
+      G_CALLBACK (value_changed_cb), self);
+  gtk_box_pack_start (GTK_BOX (self), self->priv->scale, FALSE, FALSE, 0);
+}
+
+static void
+weston_gtk_sound_applet_class_init (WestonGtkSoundAppletClass *klass)
+{
+  GObjectClass *object_class = (GObjectClass *)klass;
+
+  object_class->dispose = weston_gtk_sound_applet_dispose;
+
+  g_type_class_add_private (object_class, sizeof (WestonGtkSoundAppletPrivate));
+}
+
+GtkWidget *
+weston_gtk_sound_applet_new (void)
+{
+  return g_object_new (WESTON_GTK_TYPE_SOUND_APPLET, NULL);
+}
-- 
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