refactor the volume slider into its own wrapper gobject

1 files changed, 271 insertions, 0 deletions

diff --git a/src/volume-widget.c b/src/volume-widget.c
new file mode 100644
index 0000000..8b54a32
--- /dev/null
+++ b/src/volume-widget.c
@@ -0,0 +1,271 @@
+/*
+Copyright 2010 Canonical Ltd.
+
+Authors:
+    Conor Curran <conor.curran@canonical.com>
+
+This program is free software: you can redistribute it and/or modify it 
+under the terms of the GNU General Public License version 3, as published 
+by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful, but 
+WITHOUT ANY WARRANTY; without even the implied warranties of 
+MERCHANTABILITY, SATISFACTORY QUALITY, 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/>.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <glib/gi18n.h>
+#include "volume-widget.h"
+#include "common-defs.h"
+#include <libido/idoscalemenuitem.h>
+
+typedef struct _VolumeWidgetPrivate VolumeWidgetPrivate;
+
+struct _VolumeWidgetPrivate
+{
+	DbusmenuMenuitem* twin_item;	
+	GtkWidget* ido_volume_slider;
+	gboolean grabbed;
+};
+
+#define VOLUME_WIDGET_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), VOLUME_WIDGET_TYPE, VolumeWidgetPrivate))
+
+/* Prototypes */
+static void volume_widget_class_init (VolumeWidgetClass *klass);
+static void volume_widget_init       (VolumeWidget *self);
+static void volume_widget_dispose    (GObject *object);
+static void volume_widget_finalize   (GObject *object);
+static void volume_widget_set_twin_item(	VolumeWidget* self,
+                           							DbusmenuMenuitem* twin_item);
+static void volume_widget_set_ido_position(VolumeWidget* self,
+                                          gint position,
+                                          gint duration);
+//callbacks
+static void volume_widget_property_update( DbusmenuMenuitem* item, gchar* property, 
+                                       	  GValue* value, gpointer userdata);
+static gboolean volume_widget_change_value_cb (GtkRange     *range,
+                                 							GtkScrollType scroll,
+                                 							gdouble       value,
+                                 							gpointer      user_data);
+static void volume_widget_slider_grabbed(GtkWidget *widget, gpointer user_data);
+static void volume_widget_slider_released(GtkWidget *widget, gpointer user_data);
+static void volume_widget_parent_changed (GtkWidget *widget, gpointer user_data);
+
+G_DEFINE_TYPE (VolumeWidget, volume_widget, G_TYPE_OBJECT);
+
+static void
+volume_widget_class_init (VolumeWidgetClass *klass)
+{
+	GObjectClass 			*gobject_class = G_OBJECT_CLASS (klass);
+	
+	g_type_class_add_private (klass, sizeof (VolumeWidgetPrivate));
+
+	gobject_class->dispose = volume_widget_dispose;
+	gobject_class->finalize = volume_widget_finalize;
+}
+
+static void
+volume_widget_init (VolumeWidget *self)
+{
+	g_debug("VolumeWidget::volume_widget_init");
+	VolumeWidgetPrivate * priv = VOLUME_WIDGET_GET_PRIVATE(self);
+
+  priv->ido_volume_slider = ido_scale_menu_item_new_with_range ("VOLUME", IDO_RANGE_STYLE_DEFAULT,  0, 0, 100, 1);
+	
+	ido_scale_menu_item_set_style (IDO_SCALE_MENU_ITEM (priv->ido_volume_slider), IDO_SCALE_MENU_ITEM_STYLE_IMAGE);	
+  g_object_set(priv->ido_volume_slider, "reverse-scroll-events", TRUE, NULL);
+
+  g_signal_connect (volume_slider,
+                    "notify::parent", G_CALLBACK (slider_parent_changed),
+                    NULL);
+	
+  GtkWidget* volume_widget = ido_scale_menu_item_get_scale((IdoScaleMenuItem*)priv->ido_volume_slider);	
+	
+  // register slider changes listening on the range
+	g_signal_connect(volume_widget, "change-value", G_CALLBACK(volume_widget_change_value_cb), self);	
+	g_signal_connect(volume_widget, "value-changed", G_CALLBACK(volume_widget_value_changed_cb), self);	
+  g_signal_connect(priv->ido_volume_slider, "slider-grabbed", G_CALLBACK(volume_widget_slider_grabbed), self);
+  g_signal_connect(priv->ido_volume_slider, "slider-released", G_CALLBACK(volume_widget_slider_released), self);
+
+	// Set images on the ido
+  GtkWidget* primary_image = ido_scale_menu_item_get_primary_image((IdoScaleMenuItem*)priv->ido_volume_slider);
+  GIcon * primary_gicon = g_themed_icon_new_with_default_fallbacks("audio-volume-low-zero-panel");
+  gtk_image_set_from_gicon(GTK_IMAGE(primary_image), primary_gicon, GTK_ICON_SIZE_MENU);
+  g_object_unref(primary_gicon);
+
+  GtkWidget* secondary_image = ido_scale_menu_item_get_secondary_image((IdoScaleMenuItem*)priv->ido_volume_slider);
+  GIcon * secondary_gicon = g_themed_icon_new_with_default_fallbacks("audio-volume-high-panel");
+  gtk_image_set_from_gicon(GTK_IMAGE(secondary_image), secondary_gicon, GTK_ICON_SIZE_MENU);
+  g_object_unref(secondary_gicon);
+
+  GtkAdjustment *adj = gtk_range_get_adjustment (GTK_RANGE (volume_widget));
+  gtk_adjustment_set_step_increment(adj, 3);
+
+  gtk_widget_show_all(volume_widget);
+}
+
+static void
+volume_widget_dispose (GObject *object)
+{
+	G_OBJECT_CLASS (volume_widget_parent_class)->dispose (object);
+}
+
+static void
+volume_widget_finalize (GObject *object)
+{
+	G_OBJECT_CLASS (volume_widget_parent_class)->finalize (object);
+}
+
+static void 
+volume_widget_property_update(DbusmenuMenuitem* item, gchar* property, 
+                             GValue* value, gpointer userdata)
+{
+	g_debug("scrub-widget::property_update"); 
+	
+	g_return_if_fail (IS_VOLUME_WIDGET (userdata));	
+	VolumeWidget* mitem = VOLUME_WIDGET(userdata);
+	VolumeWidgetPrivate * priv = VOLUME_WIDGET_GET_PRIVATE(mitem);
+	
+}
+
+static void
+volume_widget_set_twin_item(VolumeWidget* self,
+                           DbusmenuMenuitem* twin_item)
+{
+	VolumeWidgetPrivate * priv = VOLUME_WIDGET_GET_PRIVATE(self);
+	priv->twin_item = twin_item;
+
+	g_signal_connect(G_OBJECT(twin_item), "property-changed", 
+	                 G_CALLBACK(volume_widget_property_update), self);
+
+	/*volume_widget_set_ido_position(self, 
+	                              dbusmenu_menuitem_property_get_int(priv->twin_item, DBUSMENU_SCRUB_MENUITEM_POSITION)/1000,
+																dbusmenu_menuitem_property_get_int(priv->twin_item, DBUSMENU_SCRUB_MENUITEM_DURATION));	                                	                                
+																*/
+}
+
+static gboolean
+volume_widget_change_value_cb (GtkRange     *range,
+                 							GtkScrollType scroll,
+                 							gdouble       new_value,
+                 							gpointer      user_data)
+{
+	g_return_val_if_fail (IS_VOLUME_WIDGET (user_data), FALSE);
+	VolumeWidget* mitem = VOLUME_WIDGET(user_data);
+	VolumeWidgetPrivate * priv = VOLUME_WIDGET_GET_PRIVATE(mitem);
+
+  // Don't bother when the slider is grabbed  
+  if(priv->grabbed == TRUE)
+    return FALSE;
+
+	GValue value = {0};
+  g_value_init(&value, G_TYPE_DOUBLE);
+	gdouble clamped = CLAMP(new_value, 0, 100);
+  g_value_set_double(&value, clamped);
+  dbusmenu_menuitem_handle_event (priv->twin_item, "grabbed", &value, 0);
+	return TRUE;
+}
+
+static gboolean
+volume_widget_value_changed(GtkRange *range, gpointer user_data)
+{
+	g_return_val_if_fail (IS_VOLUME_WIDGET (user_data), FALSE);
+	VolumeWidget* mitem = VOLUME_WIDGET(user_data);
+	VolumeWidgetPrivate * priv = VOLUME_WIDGET_GET_PRIVATE(mitem);
+	
+  gdouble current_value =  CLAMP(gtk_range_get_value(GTK_RANGE(priv->ido_volume_slider), 0, 100);
+
+  // Replace with dbus properties inspection 
+  /*if (current_value == exterior_vol_update) {
+    g_debug("ignore the value changed event - its come from the outside");
+    return FALSE;
+  }*/
+                                 
+  GValue value = {0};
+  g_value_init(&value, G_TYPE_DOUBLE);
+  g_value_set_double(&value, current_value);
+  g_debug("volume_widget_value changed callback - = %f", current_value);
+  dbusmenu_menuitem_handle_event (priv->twin_item, "slider_change", &value, 0);
+  // This is not ideal in that the icon ui will update on ui actions and not on actual service feedback.
+  // but necessary for now as the server does not send volume update information if the source of change was this ui.
+  determine_state_from_volume(current_value);
+  return FALSE;
+}
+
+
+GtkWidget*
+volume_widget_get_ido_bar(VolumeWidget* self)
+{
+	VolumeWidgetPrivate * priv = VOLUME_WIDGET_GET_PRIVATE(self);
+	return priv->ido_volume_slider;	
+}
+
+static void
+volume_widget_parent_changed (GtkWidget *widget,
+                       				gpointer   user_data)
+{
+  gtk_widget_set_size_request (widget, 200, -1);
+  g_debug("volume_widget_parent_changed");
+}
+
+ 
+static void
+volume_widget_set_ido_position(VolumeWidget* self,
+                              gint position,
+                              gint duration)
+{
+	VolumeWidgetPrivate * priv = VOLUME_WIDGET_GET_PRIVATE(self);
+	gdouble ido_position = position/(gdouble)duration	* 100.0;
+	g_debug("volume_widget_set_ido_position - pos: %i, duration: %i, ido_pos: %f", position, duration, ido_position);
+  GtkWidget *slider = ido_scale_menu_item_get_scale((IdoScaleMenuItem*)priv->ido_volume_slider);
+  GtkRange *range = (GtkRange*)slider;
+	if(duration == 0)
+		ido_position = 0.0;
+ 	gtk_range_set_value(range, ido_position);
+}
+
+static void
+volume_widget_slider_grabbed(GtkWidget *widget, gpointer user_data)
+{
+	VolumeWidget* mitem = VOLUME_WIDGET(user_data);
+	VolumeWidgetPrivate * priv = VOLUME_WIDGET_GET_PRIVATE(mitem);
+	priv->grabbed = TRUE;	
+}
+
+static void
+volume_widget_slider_released(GtkWidget *widget, gpointer user_data)
+{
+	VolumeWidget* mitem = VOLUME_WIDGET(user_data);
+	VolumeWidgetPrivate * priv = VOLUME_WIDGET_GET_PRIVATE(mitem);
+	priv->grabbed = FALSE;
+	GtkWidget *slider = ido_scale_menu_item_get_scale((IdoScaleMenuItem*)priv->ido_volume_slider);
+  gdouble new_value = gtk_range_get_value(GTK_RANGE(slider));
+	g_debug("okay set the scrub position with %f", new_value);	
+	GValue value = {0};
+  g_value_init(&value, G_TYPE_DOUBLE);
+	gdouble clamped = CLAMP(new_value, 0, 100);
+  g_value_set_double(&value, clamped);
+  dbusmenu_menuitem_handle_event (priv->twin_item, "volume-change", &value, 0);
+}
+
+
+/**
+ * volume_widget_new:
+ * @returns: a new #VolumeWidget.
+ **/
+GtkWidget* 
+volume_widget_new(DbusmenuMenuitem *item)
+{
+	GtkWidget* widget = g_object_new(VOLUME_WIDGET_TYPE, NULL);
+	volume_widget_set_twin_item((VolumeWidget*)widget, item);
+	return widget;
+}
+
+