[gnome-control-center] wacom: Add navigation button

[Bastien Nocera <hadess src gnome org>]

commit 46a3b9697bcd004241d311edfe98774544b8d3ba
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Nov 28 18:23:05 2011 +0000

    wacom: Add navigation button

 panels/wacom/Makefile.am           |    6 +-
 panels/wacom/cc-wacom-nav-button.c |  233 ++++++++++++++++++++++++++++++++++++
 panels/wacom/cc-wacom-nav-button.h |   73 +++++++++++
 3 files changed, 311 insertions(+), 1 deletions(-)
---
diff --git a/panels/wacom/Makefile.am b/panels/wacom/Makefile.am
index 67a6cce..ee66cc1 100644
--- a/panels/wacom/Makefile.am
+++ b/panels/wacom/Makefile.am
@@ -21,7 +21,9 @@ libwacom_properties_la_SOURCES =	\
 	cc-wacom-page.c			\
 	cc-wacom-page.h			\
 	gsd-wacom-device.c		\
-	gsd-wacom-device.h
+	gsd-wacom-device.h		\
+	cc-wacom-nav-button.c		\
+	cc-wacom-nav-button.h
 
 libwacom_properties_la_LIBADD = $(PANEL_LIBS) $(WACOM_PANEL_LIBS)
 libwacom_properties_la_LDFLAGS = $(PANEL_LDFLAGS)
@@ -32,6 +34,8 @@ test_wacom_SOURCES =			\
 	test-wacom.c			\
 	cc-wacom-page.c			\
 	cc-wacom-page.h			\
+	cc-wacom-nav-button.c		\
+	cc-wacom-nav-button.h		\
 	gsd-wacom-device.c		\
 	gsd-wacom-device.h
 
diff --git a/panels/wacom/cc-wacom-nav-button.c b/panels/wacom/cc-wacom-nav-button.c
new file mode 100644
index 0000000..e63a680
--- /dev/null
+++ b/panels/wacom/cc-wacom-nav-button.c
@@ -0,0 +1,233 @@
+/*
+ * Copyright  2011 Red Hat, Inc.
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Authors: Bastien Nocera <hadess hadess net>
+ *
+ */
+
+#include <config.h>
+
+#include "cc-wacom-nav-button.h"
+#include <gtk/gtk.h>
+
+G_DEFINE_TYPE (CcWacomNavButton, cc_wacom_nav_button, GTK_TYPE_BOX)
+
+#define WACOM_NAV_BUTTON_PRIVATE(o) \
+  (G_TYPE_INSTANCE_GET_PRIVATE ((o), CC_TYPE_WACOM_NAV_BUTTON, CcWacomNavButtonPrivate))
+
+struct _CcWacomNavButtonPrivate
+{
+	GtkNotebook *notebook;
+	GtkWidget   *prev;
+	GtkWidget   *next;
+	guint        page_added_id;
+	guint        page_removed_id;
+	guint        page_switched_id;
+	gboolean     ignore_first_page;
+};
+
+enum {
+	PROP_0,
+	PROP_NOTEBOOK,
+	PROP_IGNORE_FIRST
+};
+
+static void
+cc_wacom_nav_button_update (CcWacomNavButton *nav)
+{
+	CcWacomNavButtonPrivate *priv = nav->priv;
+	int num_pages;
+
+	if (priv->notebook == NULL) {
+		gtk_widget_hide (GTK_WIDGET (nav));
+		return;
+	}
+
+	num_pages = gtk_notebook_get_n_pages (GTK_NOTEBOOK (priv->notebook));
+	if (num_pages == 0)
+		return;
+	if (priv->ignore_first_page && num_pages == 1)
+		return;
+
+	if (priv->ignore_first_page)
+		num_pages--;
+
+	g_assert (num_pages >= 1);
+
+	if (num_pages == 1) {
+		gtk_widget_hide (GTK_WIDGET (nav));
+	} else {
+		int current_page;
+
+		gtk_widget_show (GTK_WIDGET (nav));
+		current_page = gtk_notebook_get_current_page (GTK_NOTEBOOK (priv->notebook));
+		if (current_page < 0)
+			return;
+		if (priv->ignore_first_page)
+			current_page--;
+		gtk_widget_set_sensitive (priv->prev, current_page == 0 ? FALSE : TRUE);
+		gtk_widget_set_sensitive (priv->next, current_page + 1 == num_pages ? FALSE : TRUE);
+	}
+}
+
+static void
+pages_changed (GtkNotebook      *notebook,
+	       GtkWidget        *child,
+	       guint             page_num,
+	       CcWacomNavButton *nav)
+{
+	cc_wacom_nav_button_update (nav);
+}
+
+static void
+page_switched (GtkNotebook      *notebook,
+	       GParamSpec       *pspec,
+	       CcWacomNavButton *nav)
+{
+	cc_wacom_nav_button_update (nav);
+}
+
+static void
+next_clicked (GtkButton        *button,
+	      CcWacomNavButton *nav)
+{
+	int current_page;
+
+	current_page = gtk_notebook_get_current_page (GTK_NOTEBOOK (nav->priv->notebook));
+	current_page++;
+	gtk_notebook_set_current_page (GTK_NOTEBOOK (nav->priv->notebook), current_page);
+}
+
+static void
+prev_clicked (GtkButton        *button,
+	      CcWacomNavButton *nav)
+{
+	int current_page;
+
+	current_page = gtk_notebook_get_current_page (GTK_NOTEBOOK (nav->priv->notebook));
+	current_page--;
+	gtk_notebook_set_current_page (GTK_NOTEBOOK (nav->priv->notebook), current_page--);
+}
+
+static void
+cc_wacom_nav_button_set_property (GObject      *object,
+				  guint         property_id,
+				  const GValue *value,
+				  GParamSpec   *pspec)
+{
+	CcWacomNavButton *nav = CC_WACOM_NAV_BUTTON (object);
+	CcWacomNavButtonPrivate *priv = nav->priv;
+
+	switch (property_id) {
+	case PROP_NOTEBOOK:
+		if (priv->notebook) {
+			g_signal_handler_disconnect (priv->notebook, priv->page_added_id);
+			g_signal_handler_disconnect (priv->notebook, priv->page_removed_id);
+			g_signal_handler_disconnect (priv->notebook, priv->page_switched_id);
+			g_object_unref (priv->notebook);
+		}
+		priv->notebook = g_value_dup_object (value);
+		priv->page_added_id = g_signal_connect (G_OBJECT (priv->notebook), "page-added",
+							G_CALLBACK (pages_changed), nav);
+		priv->page_removed_id = g_signal_connect (G_OBJECT (priv->notebook), "page-removed",
+							  G_CALLBACK (pages_changed), nav);
+		priv->page_switched_id = g_signal_connect (G_OBJECT (priv->notebook), "notify::page",
+							   G_CALLBACK (page_switched), nav);
+		cc_wacom_nav_button_update (nav);
+		break;
+	case PROP_IGNORE_FIRST:
+		priv->ignore_first_page = g_value_get_boolean (value);
+		cc_wacom_nav_button_update (nav);
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+	}
+}
+
+static void
+cc_wacom_nav_button_dispose (GObject *object)
+{
+	CcWacomNavButtonPrivate *priv = CC_WACOM_NAV_BUTTON (object)->priv;
+
+	if (priv->notebook) {
+		g_signal_handler_disconnect (priv->notebook, priv->page_added_id);
+		priv->page_added_id = 0;
+		g_signal_handler_disconnect (priv->notebook, priv->page_removed_id);
+		priv->page_removed_id = 0;
+		g_signal_handler_disconnect (priv->notebook, priv->page_switched_id);
+		priv->page_switched_id = 0;
+		g_object_unref (priv->notebook);
+		priv->notebook = NULL;
+	}
+
+	G_OBJECT_CLASS (cc_wacom_nav_button_parent_class)->dispose (object);
+}
+
+static void
+cc_wacom_nav_button_class_init (CcWacomNavButtonClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+	g_type_class_add_private (klass, sizeof (CcWacomNavButtonPrivate));
+
+	object_class->set_property = cc_wacom_nav_button_set_property;
+	object_class->dispose = cc_wacom_nav_button_dispose;
+
+	g_object_class_install_property (object_class, PROP_NOTEBOOK,
+					 g_param_spec_object ("notebook", "notebook", "notebook",
+							      GTK_TYPE_NOTEBOOK,
+							      G_PARAM_WRITABLE));
+	g_object_class_install_property (object_class, PROP_IGNORE_FIRST,
+					 g_param_spec_boolean ("ignore-first", "ignore-first", "ignore-first",
+							       FALSE,
+							       G_PARAM_WRITABLE));
+}
+
+static void
+cc_wacom_nav_button_init (CcWacomNavButton *self)
+{
+	CcWacomNavButtonPrivate *priv;
+	GtkWidget *image;
+
+	priv = self->priv = WACOM_NAV_BUTTON_PRIVATE (self);
+
+	priv->prev = gtk_button_new ();
+	image = gtk_image_new_from_icon_name ("go-previous-symbolic", GTK_ICON_SIZE_MENU);
+	gtk_container_add (GTK_CONTAINER (priv->prev), image);
+	g_signal_connect (G_OBJECT (priv->prev), "clicked",
+			  G_CALLBACK (prev_clicked), self);
+
+	priv->next = gtk_button_new ();
+	image = gtk_image_new_from_icon_name ("go-next-symbolic", GTK_ICON_SIZE_MENU);
+	gtk_container_add (GTK_CONTAINER (priv->next), image);
+	g_signal_connect (G_OBJECT (priv->next), "clicked",
+			  G_CALLBACK (next_clicked), self);
+
+	gtk_box_pack_start (GTK_BOX (self), priv->prev,
+			    FALSE, FALSE, 0);
+	gtk_box_pack_start (GTK_BOX (self), priv->next,
+			    FALSE, FALSE, 0);
+
+	gtk_widget_show (priv->prev);
+	gtk_widget_show (priv->next);
+}
+
+GtkWidget *
+cc_wacom_nav_button_new (void)
+{
+	return GTK_WIDGET (g_object_new (CC_TYPE_WACOM_NAV_BUTTON, NULL));
+}
diff --git a/panels/wacom/cc-wacom-nav-button.h b/panels/wacom/cc-wacom-nav-button.h
new file mode 100644
index 0000000..bc58b01
--- /dev/null
+++ b/panels/wacom/cc-wacom-nav-button.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright  2011 Red Hat, Inc.
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Authors: Bastien Nocera <hadess hadess net>
+ */
+
+
+#ifndef _CC_WACOM_NAV_BUTTON_H
+#define _CC_WACOM_NAV_BUTTON_H
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define CC_TYPE_WACOM_NAV_BUTTON cc_wacom_nav_button_get_type()
+
+#define CC_WACOM_NAV_BUTTON(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
+  CC_TYPE_WACOM_NAV_BUTTON, CcWacomNavButton))
+
+#define CC_WACOM_NAV_BUTTON_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST ((klass), \
+  CC_TYPE_WACOM_NAV_BUTTON, CcWacomNavButtonClass))
+
+#define CC_IS_WACOM_NAV_BUTTON(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
+  CC_TYPE_WACOM_NAV_BUTTON))
+
+#define CC_IS_WACOM_NAV_BUTTON_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE ((klass), \
+  CC_TYPE_WACOM_NAV_BUTTON))
+
+#define CC_WACOM_NAV_BUTTON_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS ((obj), \
+  CC_TYPE_WACOM_NAV_BUTTON, CcWacomNavButtonClass))
+
+typedef struct _CcWacomNavButton CcWacomNavButton;
+typedef struct _CcWacomNavButtonClass CcWacomNavButtonClass;
+typedef struct _CcWacomNavButtonPrivate CcWacomNavButtonPrivate;
+
+struct _CcWacomNavButton
+{
+  GtkBox parent;
+
+  CcWacomNavButtonPrivate *priv;
+};
+
+struct _CcWacomNavButtonClass
+{
+  GtkBoxClass parent_class;
+};
+
+GType cc_wacom_nav_button_get_type (void) G_GNUC_CONST;
+
+GtkWidget * cc_wacom_nav_button_new (void);
+
+G_END_DECLS
+
+#endif /* _CC_WACOM_NAV_BUTTON_H */