Implemented an Evolution::Activity interface for keeping track of

background tasks.  The Activity interface is added to the shell, and
the status of the various tasks is now displayed in a task bar widget
at the bottom of the EShellView.

I also implemented a simple test component to test all this stuff.

svn path=/trunk/; revision=10434

1 files changed, 190 insertions, 0 deletions

diff --git a/shell/e-task-widget.c b/shell/e-task-widget.c
new file mode 100644
index 0000000000..e67baaf0e7
--- /dev/null
+++ b/shell/e-task-widget.c
@@ -0,0 +1,190 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+/* e-task-widget.c
+ *
+ * Copyright (C) 2001  Ximian, 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.
+ *
+ * Author: Ettore Perazzoli <ettore@ximian.com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "e-task-widget.h"
+
+#include <gtk/gtkhbox.h>
+#include <gtk/gtklabel.h>
+#include <gtk/gtkpixmap.h>
+
+/* HA HA.  Just #including <libgnome/gnome-i18n.h> doesn't seem to work, so
+   I'll have to include the full thing.  */
+#include <libgnome/libgnome.h>
+
+#include <gal/util/e-util.h>
+
+
+#define SPACING 2
+
+#define PARENT_TYPE (gtk_frame_get_type ())
+static GtkFrameClass *parent_class = NULL;
+
+struct _ETaskWidgetPrivate {
+	GdkPixbuf *icon_pixbuf;
+	GtkWidget *label;
+	GtkWidget *pixmap;
+};
+
+
+/* GtkObject methods.  */
+
+static void
+impl_destroy (GtkObject *object)
+{
+	ETaskWidget *task_widget;
+	ETaskWidgetPrivate *priv;
+
+	task_widget = E_TASK_WIDGET (object);
+	priv = task_widget->priv;
+
+	gdk_pixbuf_unref (priv->icon_pixbuf);
+
+	(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
+}
+
+
+static void
+class_init (GtkObjectClass *object_class)
+{
+	parent_class = gtk_type_class (PARENT_TYPE);
+
+	object_class->destroy = impl_destroy;
+}
+
+static void
+init (ETaskWidget *task_widget)
+{
+	ETaskWidgetPrivate *priv;
+
+	priv = g_new (ETaskWidgetPrivate, 1);
+
+	task_widget->priv = priv;
+}
+
+
+void
+e_task_widget_construct (ETaskWidget *task_widget,
+			 GdkPixbuf *icon_pixbuf,
+			 const char *information)
+{
+	ETaskWidgetPrivate *priv;
+	GdkPixmap *pixmap;
+	GdkBitmap *mask;
+	GtkWidget *box;
+
+	g_return_if_fail (task_widget != NULL);
+	g_return_if_fail (E_IS_TASK_WIDGET (task_widget));
+	g_return_if_fail (icon_pixbuf != NULL);
+	g_return_if_fail (information != NULL);
+
+	priv = task_widget->priv;
+
+	gtk_frame_set_shadow_type (GTK_FRAME (task_widget), GTK_SHADOW_IN);
+
+	box = gtk_hbox_new (FALSE, 0);
+	gtk_container_add (GTK_CONTAINER (task_widget), box);
+	gtk_widget_show (box);
+
+	priv->icon_pixbuf = gdk_pixbuf_ref (icon_pixbuf);
+
+	gdk_pixbuf_render_pixmap_and_mask (icon_pixbuf, &pixmap, &mask, 128);
+
+	priv->pixmap = gtk_pixmap_new (pixmap, mask);
+	gtk_widget_show (priv->pixmap);
+	gtk_box_pack_start (GTK_BOX (box), priv->pixmap, FALSE, TRUE, 0);
+
+	priv->label = gtk_label_new ("");
+	gtk_misc_set_alignment (GTK_MISC (priv->label), 0.0, 0.5);
+	gtk_widget_show (priv->label);
+	gtk_box_pack_start (GTK_BOX (box), priv->label, TRUE, TRUE, 0);
+
+	gdk_pixmap_unref (pixmap);
+	gdk_bitmap_unref (mask);
+
+	e_task_widget_update (task_widget, information, -1.0);
+}
+
+GtkWidget *
+e_task_widget_new (GdkPixbuf *icon_pixbuf,
+		   const char *information)
+{
+	ETaskWidget *task_widget;
+
+	g_return_val_if_fail (icon_pixbuf != NULL, NULL);
+	g_return_val_if_fail (information != NULL, NULL);
+
+	task_widget = gtk_type_new (e_task_widget_get_type ());
+	e_task_widget_construct (task_widget, icon_pixbuf, information);
+
+	return GTK_WIDGET (task_widget);
+}
+
+
+void
+e_task_widget_update (ETaskWidget *task_widget,
+		      const char *information,
+		      double completion)
+{
+	ETaskWidgetPrivate *priv;
+	char *text;
+
+	g_return_if_fail (task_widget != NULL);
+	g_return_if_fail (E_IS_TASK_WIDGET (task_widget));
+	g_return_if_fail (information != NULL);
+
+	priv = task_widget->priv;
+
+	if (completion < 0.0) {
+		text = g_strdup_printf (_("%s (...)"), information);
+	} else {
+		int percent_complete;
+
+		percent_complete = (int) (completion * 100.0 + .5);
+		text = g_strdup_printf (_("%s (%d%% complete)"), information, percent_complete);
+	}
+
+	gtk_label_set_text (GTK_LABEL (priv->label), text);
+
+	g_free (text);
+}
+
+void
+e_task_wiget_alert (ETaskWidget *task_widget)
+{
+	g_return_if_fail (task_widget != NULL);
+	g_return_if_fail (E_IS_TASK_WIDGET (task_widget));
+}
+
+void
+e_task_wiget_unalert (ETaskWidget *task_widget)
+{
+	g_return_if_fail (task_widget != NULL);
+	g_return_if_fail (E_IS_TASK_WIDGET (task_widget));
+}
+	
+
+E_MAKE_TYPE (e_task_widget, "ETaskWidget", ETaskWidget, class_init, init, PARENT_TYPE)