+/* GTK - The GIMP Toolkit
+ *
+ * Copyright (C) 2007 John Stowers, Neil Jagdish Patel.
+ * Copyright (C) 2009 Bastien Nocera, David Zeuthen
+ *
+ * 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Code adapted from egg-spinner
+ * by Christian Hergert <christian.hergert@gmail.com>
+ */
+
+/*
+ * Modified by the GTK+ Team and others 2007. See the AUTHORS
+ * file for a list of people on the GTK+ Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+#include "config.h"
+
+#include "gtkintl.h"
+#include "gtkaccessible.h"
+#include "gtkimage.h"
+#include "gtkspinner.h"
+#include "gtkstyle.h"
+#include "gtkalias.h"
+
+#define GTK_SPINNER_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_SPINNER, GtkSpinnerPrivate))
+
+G_DEFINE_TYPE (GtkSpinner, gtk_spinner, GTK_TYPE_DRAWING_AREA);
+
+enum {
+ PROP_0,
+ PROP_ACTIVE
+};
+
+struct _GtkSpinnerPrivate
+{
+ guint current;
+ guint num_steps;
+ guint timeout;
+};
+
+static void gtk_spinner_class_init (GtkSpinnerClass *klass);
+static void gtk_spinner_init (GtkSpinner *spinner);
+static void gtk_spinner_dispose (GObject *gobject);
+static gboolean gtk_spinner_expose (GtkWidget *widget, GdkEventExpose *event);
+static void gtk_spinner_screen_changed (GtkWidget* widget, GdkScreen* old_screen);
+static void gtk_spinner_style_set (GtkWidget *widget, GtkStyle *prev_style);
+static void gtk_spinner_get_property (GObject *object,
+ guint param_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void gtk_spinner_set_property (GObject *object,
+ guint param_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static AtkObject *gtk_spinner_get_accessible (GtkWidget *widget);
+static GType gtk_spinner_accessible_get_type (void);
+
+static void
+gtk_spinner_class_init (GtkSpinnerClass *klass)
+{
+ GObjectClass *gobject_class;
+ GtkWidgetClass *widget_class;
+
+ gtk_spinner_parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class = G_OBJECT_CLASS(klass);
+ g_type_class_add_private (gobject_class, sizeof (GtkSpinnerPrivate));
+ gobject_class->dispose = gtk_spinner_dispose;
+ gobject_class->get_property = gtk_spinner_get_property;
+ gobject_class->set_property = gtk_spinner_set_property;
+
+ widget_class = GTK_WIDGET_CLASS(klass);
+ widget_class->expose_event = gtk_spinner_expose;
+ widget_class->screen_changed = gtk_spinner_screen_changed;
+ widget_class->style_set = gtk_spinner_style_set;
+ widget_class->get_accessible = gtk_spinner_get_accessible;
+
+ /* GtkSpinner::active:
+ *
+ * Whether the spinner is active
+ *
+ * Since 2.20
+ */
+ g_object_class_install_property (gobject_class,
+ PROP_ACTIVE,
+ g_param_spec_boolean ("active",
+ P_("Active"),
+ P_("Whether the spinner is active"),
+ FALSE,
+ G_PARAM_READWRITE));
+ /**
+ * GtkSpinner::num-steps:
+ *
+ * The number of steps for the spinner to complete a full loop. The animation will
+ * complete a full revolution in one second.
+ *
+ * Since: 2.20
+ */
+ gtk_widget_class_install_style_property (widget_class,
+ g_param_spec_uint ("num-steps",
+ P_("Number of steps"),
+ P_("The number of steps for the spinner to complete a full loop. The animation will complete a full revolution in one second."),
+ 1,
+ G_MAXUINT,
+ 12,
+ G_PARAM_READABLE));
+}
+
+static void
+gtk_spinner_get_property (GObject *object,
+ guint param_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkSpinnerPrivate *priv;
+
+ priv = GTK_SPINNER_GET_PRIVATE (object);
+
+ switch (param_id)
+ {
+ case PROP_ACTIVE:
+ g_value_set_boolean (value, priv->timeout != 0);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
+ }
+}
+
+static void
+gtk_spinner_set_property (GObject *object,
+ guint param_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ switch (param_id)
+ {
+ case PROP_ACTIVE:
+ gtk_spinner_start (GTK_SPINNER (object));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
+ }
+}
+
+static void
+gtk_spinner_init (GtkSpinner *spinner)
+{
+ GtkSpinnerPrivate *priv;
+
+ priv = GTK_SPINNER_GET_PRIVATE (spinner);
+ priv->current = 0;
+ priv->timeout = 0;
+
+ GTK_WIDGET_SET_FLAGS (GTK_WIDGET (spinner), GTK_NO_WINDOW);
+}
+
+static gboolean
+gtk_spinner_expose (GtkWidget *widget, GdkEventExpose *event)
+{
+ GtkStateType state_type;
+ GtkSpinnerPrivate *priv;
+ int width, height;
+
+ priv = GTK_SPINNER_GET_PRIVATE (widget);
+
+ width = widget->allocation.width;
+ height = widget->allocation.height;
+
+ if ((width < 12) || (height <12))
+ gtk_widget_set_size_request (widget, 12, 12);
+
+ state_type = GTK_STATE_NORMAL;
+ if (!GTK_WIDGET_IS_SENSITIVE (widget))
+ state_type = GTK_STATE_INSENSITIVE;
+
+ gtk_paint_spinner (widget->style,
+ widget->window,
+ state_type,
+ priv->current,
+ event->area.x, event->area.y,
+ event->area.width, event->area.height);
+
+ return FALSE;
+}
+
+static void
+gtk_spinner_screen_changed (GtkWidget* widget, GdkScreen* old_screen)
+{
+ GtkSpinner *spinner;
+ GdkScreen* new_screen;
+ GdkColormap* colormap;
+
+ spinner = GTK_SPINNER(widget);
+
+ new_screen = gtk_widget_get_screen (widget);
+ colormap = gdk_screen_get_rgba_colormap (new_screen);
+
+ if (!colormap)
+ {
+ colormap = gdk_screen_get_rgb_colormap (new_screen);
+ }
+
+ gtk_widget_set_colormap (widget, colormap);
+}
+
+static void
+gtk_spinner_style_set (GtkWidget *widget,
+ GtkStyle *prev_style)
+{
+ GtkSpinnerPrivate *priv;
+
+ priv = GTK_SPINNER_GET_PRIVATE (widget);
+
+ gtk_widget_style_get (GTK_WIDGET (widget),
+ "num-steps", &(priv->num_steps),
+ NULL);
+
+ if (priv->current > priv->num_steps)
+ priv->current = 0;
+}
+
+static gboolean
+gtk_spinner_timeout (gpointer data)
+{
+ GtkSpinnerPrivate *priv;
+
+ priv = GTK_SPINNER_GET_PRIVATE (data);
+
+ if (priv->current + 1 >= priv->num_steps)
+ {
+ priv->current = 0;
+ }
+ else
+ {
+ priv->current++;
+ }
+
+ gtk_widget_queue_draw (GTK_WIDGET (data));
+
+ return TRUE;
+}
+static void
+gtk_spinner_dispose (GObject *gobject)
+{
+ GtkSpinnerPrivate *priv;
+
+ priv = GTK_SPINNER_GET_PRIVATE (gobject);
+
+ if (priv->timeout != 0)
+ {
+ g_source_remove (priv->timeout);
+ priv->timeout = 0;
+ }
+
+ G_OBJECT_CLASS (gtk_spinner_parent_class)->dispose (gobject);
+}
+
+static GType
+gtk_spinner_accessible_factory_get_accessible_type (void)
+{
+ return gtk_spinner_accessible_get_type ();
+}
+
+static AtkObject *
+gtk_spinner_accessible_new (GObject *obj)
+{
+ AtkObject *accessible;
+
+ g_return_val_if_fail (GTK_IS_WIDGET (obj), NULL);
+
+ accessible = g_object_new (gtk_spinner_accessible_get_type (), NULL);
+ atk_object_initialize (accessible, obj);
+
+ return accessible;
+}
+
+static AtkObject*
+gtk_spinner_accessible_factory_create_accessible (GObject *obj)
+{
+ return gtk_spinner_accessible_new (obj);
+}
+
+static void
+gtk_spinner_accessible_factory_class_init (AtkObjectFactoryClass *klass)
+{
+ klass->create_accessible = gtk_spinner_accessible_factory_create_accessible;
+ klass->get_accessible_type = gtk_spinner_accessible_factory_get_accessible_type;
+}
+
+static GType
+gtk_spinner_accessible_factory_get_type (void)
+{
+ static GType type = 0;
+
+ if (!type)
+ {
+ const GTypeInfo tinfo =
+ {
+ sizeof (AtkObjectFactoryClass),
+ NULL, /* base_init */
+ NULL, /* base_finalize */
+ (GClassInitFunc) gtk_spinner_accessible_factory_class_init,
+ NULL, /* class_finalize */
+ NULL, /* class_data */
+ sizeof (AtkObjectFactory),
+ 0, /* n_preallocs */
+ NULL, NULL
+ };
+
+ type = g_type_register_static (ATK_TYPE_OBJECT_FACTORY,
+ I_("GtkSpinnerAccessibleFactory"),
+ &tinfo, 0);
+ }
+ return type;
+}
+
+static AtkObjectClass *a11y_parent_class = NULL;
+
+static void
+gtk_spinner_accessible_initialize (AtkObject *accessible,
+ gpointer widget)
+{
+ atk_object_set_name (accessible, _("spinner"));
+ atk_object_set_description (accessible, _("provides visual status"));
+
+ a11y_parent_class->initialize (accessible, widget);
+}
+
+static void
+gtk_spinner_accessible_class_init (AtkObjectClass *klass)
+{
+ a11y_parent_class = g_type_class_peek_parent (klass);
+
+ klass->initialize = gtk_spinner_accessible_initialize;
+}
+
+static void
+gtk_spinner_accessible_image_get_size (AtkImage *image,
+ gint *width,
+ gint *height)
+{
+ GtkWidget *widget;
+
+ widget = GTK_ACCESSIBLE (image)->widget;
+ if (!widget)
+ {
+ *width = *height = 0;
+ }
+ else
+ {
+ *width = widget->allocation.width;
+ *height = widget->allocation.height;
+ }
+}
+
+static void
+gtk_spinner_accessible_image_interface_init (AtkImageIface *iface)
+{
+ iface->get_image_size = gtk_spinner_accessible_image_get_size;
+}
+
+static GType
+gtk_spinner_accessible_get_type (void)
+{
+ static GType type = 0;
+
+ /* Action interface
+ Name etc. ... */
+ if (G_UNLIKELY (type == 0))
+ {
+ const GInterfaceInfo atk_image_info = {
+ (GInterfaceInitFunc) gtk_spinner_accessible_image_interface_init,
+ (GInterfaceFinalizeFunc) NULL,
+ NULL
+ };
+ GType type;
+ GType parent_atk_type;
+ GTypeInfo tinfo = { 0 };
+ GTypeQuery query;
+ AtkObjectFactory *factory;
+
+ if ((type = g_type_from_name ("GtkSpinnerAccessible")))
+ return type;
+
+ factory = atk_registry_get_factory (atk_get_default_registry (),
+ GTK_TYPE_IMAGE);
+ if (!factory)
+ return G_TYPE_INVALID;
+
+ parent_atk_type = atk_object_factory_get_accessible_type (factory);
+ if (!parent_atk_type)
+ return G_TYPE_INVALID;
+
+ /*
+ * Figure out the size of the class and instance
+ * we are deriving from
+ */
+ g_type_query (parent_atk_type, &query);
+
+ tinfo.class_init = (GClassInitFunc) gtk_spinner_accessible_class_init;
+ tinfo.class_size = query.class_size;
+ tinfo.instance_size = query.instance_size;
+
+ /* Register the type */
+ type = g_type_register_static (parent_atk_type,
+ "GtkSpinnerAccessible",
+ &tinfo, 0);
+
+ g_type_add_interface_static (type, ATK_TYPE_IMAGE,
+ &atk_image_info);
+ }
+
+ return type;
+}
+
+static AtkObject *
+gtk_spinner_get_accessible (GtkWidget *widget)
+{
+ static gboolean first_time = TRUE;
+
+ if (first_time)
+ {
+ AtkObjectFactory *factory;
+ AtkRegistry *registry;
+ GType derived_type;
+ GType derived_atk_type;
+
+ /*
+ * Figure out whether accessibility is enabled by looking at the
+ * type of the accessible object which would be created for
+ * the parent type of GtkSpinner.
+ */
+ derived_type = g_type_parent (GTK_TYPE_SPINNER);
+
+ registry = atk_get_default_registry ();
+ factory = atk_registry_get_factory (registry,
+ derived_type);
+ derived_atk_type = atk_object_factory_get_accessible_type (factory);
+ if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
+ atk_registry_set_factory_type (registry,
+ GTK_TYPE_SPINNER,
+ gtk_spinner_accessible_factory_get_type ());
+ first_time = FALSE;
+ }
+ return GTK_WIDGET_CLASS (gtk_spinner_parent_class)->get_accessible (widget);
+}
+
+/**
+ * gtk_spinner_new
+ *
+ * Returns a new spinner widget. Not yet started.
+ *
+ * Return value: a new #GtkSpinner
+ *
+ * Since: 2.20
+ */
+GtkWidget *
+gtk_spinner_new (void)
+{
+ return g_object_new (GTK_TYPE_SPINNER, NULL);
+}
+
+/**
+ * gtk_spinner_start
+ *
+ * Starts the animation on the #GtkSpinner
+ *
+ * Since: 2.20
+ */
+void
+gtk_spinner_start (GtkSpinner *spinner)
+{
+ GtkSpinnerPrivate *priv;
+
+ g_return_if_fail (GTK_IS_SPINNER (spinner));
+
+ priv = GTK_SPINNER_GET_PRIVATE (spinner);
+ if (priv->timeout != 0)
+ {
+ return;
+ }
+ priv->timeout = gdk_threads_add_timeout (1000 / priv->num_steps, gtk_spinner_timeout, spinner);
+}
+
+/**
+ * gtk_spinner_stop
+ *
+ * Stops the animation on the #GtkSpinner
+ *
+ * Since: 2.20
+ */
+void
+gtk_spinner_stop (GtkSpinner *spinner)
+{
+ GtkSpinnerPrivate *priv;
+
+ g_return_if_fail (GTK_IS_SPINNER (spinner));
+
+ priv = GTK_SPINNER_GET_PRIVATE (spinner);
+ if (priv->timeout == 0)
+ {
+ return;
+ }
+ g_source_remove (priv->timeout);
+ priv->timeout = 0;
+}
+
+#define __GTK_SPINNER_C__
+#include "gtkaliasdef.c"