Add EPaned widget to generalize vertical view.

1 files changed, 344 insertions, 0 deletions

diff --git a/widgets/misc/e-paned.c b/widgets/misc/e-paned.c
new file mode 100644
index 0000000000..350042413a
--- /dev/null
+++ b/widgets/misc/e-paned.c
@@ -0,0 +1,344 @@
+/*
+ * e-paned.c
+ *
+ * This program 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) version 3.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#include "e-paned.h"
+
+#include <config.h>
+#include <glib/gi18n-lib.h>
+
+#define E_PANED_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_PANED, EPanedPrivate))
+
+struct _EPanedPrivate {
+	gint hposition;
+	gint vposition;
+
+	guint sync_position	: 1;
+};
+
+enum {
+	PROP_0,
+	PROP_HPOSITION,
+	PROP_VPOSITION,
+	PROP_VERTICAL_VIEW
+};
+
+static gpointer parent_class;
+
+static void
+paned_notify_orientation_cb (EPaned *paned)
+{
+	paned->priv->sync_position = TRUE;
+	gtk_widget_queue_resize (GTK_WIDGET (paned));
+
+	g_object_notify (G_OBJECT (paned), "vertical-view");
+}
+
+static void
+paned_notify_position_cb (EPaned *paned)
+{
+	GtkAllocation *allocation;
+	gint position;
+
+	if (paned->priv->sync_position)
+		return;
+
+	allocation = &GTK_WIDGET (paned)->allocation;
+	position = gtk_paned_get_position (GTK_PANED (paned));
+
+	if (e_paned_get_vertical_view (paned)) {
+		position = MAX (0, allocation->width - position);
+		e_paned_set_hposition (paned, position);
+	} else {
+		position = MAX (0, allocation->height - position);
+		e_paned_set_vposition (paned, position);
+	}
+}
+
+static void
+paned_set_property (GObject *object,
+                    guint property_id,
+                    const GValue *value,
+                    GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_HPOSITION:
+			e_paned_set_hposition (
+				E_PANED (object),
+				g_value_get_int (value));
+			return;
+
+		case PROP_VPOSITION:
+			e_paned_set_vposition (
+				E_PANED (object),
+				g_value_get_int (value));
+			return;
+
+		case PROP_VERTICAL_VIEW:
+			e_paned_set_vertical_view (
+				E_PANED (object),
+				g_value_get_boolean (value));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+paned_get_property (GObject *object,
+                    guint property_id,
+                    GValue *value,
+                    GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_HPOSITION:
+			g_value_set_int (
+				value, e_paned_get_hposition (
+				E_PANED (object)));
+			return;
+
+		case PROP_VPOSITION:
+			g_value_set_int (
+				value, e_paned_get_vposition (
+				E_PANED (object)));
+			return;
+
+		case PROP_VERTICAL_VIEW:
+			g_value_set_boolean (
+				value, e_paned_get_vertical_view (
+				E_PANED (object)));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+paned_size_allocate (GtkWidget *widget,
+                     GtkAllocation *allocation)
+{
+	EPaned *paned = E_PANED (widget);
+	gint allocated;
+	gint position;
+
+	/* Chain up to parent's size_allocate() method. */
+	GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
+
+	if (!paned->priv->sync_position)
+		return;
+
+	if (e_paned_get_vertical_view (paned)) {
+		allocated = allocation->width;
+		position = e_paned_get_hposition (paned);
+	} else {
+		allocated = allocation->height;
+		position = e_paned_get_vposition (paned);
+	}
+
+	position = MAX (0, allocated - position);
+	gtk_paned_set_position (GTK_PANED (paned), position);
+
+	paned->priv->sync_position = FALSE;
+}
+
+static void
+paned_class_init (EPanedClass *class)
+{
+	GObjectClass *object_class;
+	GtkWidgetClass *widget_class;
+
+	parent_class = g_type_class_peek_parent (class);
+	g_type_class_add_private (class, sizeof (EPanedPrivate));
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->set_property = paned_set_property;
+	object_class->get_property = paned_get_property;
+
+	widget_class = GTK_WIDGET_CLASS (class);
+	widget_class->size_allocate = paned_size_allocate;
+
+	g_object_class_install_property (
+		object_class,
+		PROP_HPOSITION,
+		g_param_spec_int (
+			"hposition",
+			_("Horizontal Position"),
+			_("Pane position when oriented horizontally"),
+			G_MININT,
+			G_MAXINT,
+			0,
+			G_PARAM_READWRITE));
+
+	g_object_class_install_property (
+		object_class,
+		PROP_VPOSITION,
+		g_param_spec_int (
+			"vposition",
+			_("Vertical Position"),
+			_("Pane position when oriented vertically"),
+			G_MININT,
+			G_MAXINT,
+			0,
+			G_PARAM_READWRITE));
+
+	g_object_class_install_property (
+		object_class,
+		PROP_VERTICAL_VIEW,
+		g_param_spec_boolean (
+			"vertical-view",
+			_("Vertical View"),
+			_("Whether vertical view is enabled"),
+			FALSE,
+			G_PARAM_READWRITE));
+}
+
+static void
+paned_init (EPaned *paned)
+{
+	paned->priv = E_PANED_GET_PRIVATE (paned);
+
+	g_signal_connect (
+		paned, "notify::orientation",
+		G_CALLBACK (paned_notify_orientation_cb), NULL);
+
+	g_signal_connect (
+		paned, "notify::position",
+		G_CALLBACK (paned_notify_position_cb), NULL);
+}
+
+GType
+e_paned_get_type (void)
+{
+	static GType type = 0;
+
+	if (G_UNLIKELY (type == 0)) {
+		static const GTypeInfo type_info = {
+			sizeof (EPanedClass),
+			(GBaseInitFunc) NULL,
+			(GBaseFinalizeFunc) NULL,
+			(GClassInitFunc) paned_class_init,
+			(GClassFinalizeFunc) NULL,
+			NULL,  /* class_data */
+			sizeof (EPaned),
+			0,     /* n_preallocs */
+			(GInstanceInitFunc) paned_init,
+			NULL   /* value_table */
+		};
+
+		type = g_type_register_static (
+			GTK_TYPE_PANED, "EPaned", &type_info, 0);
+	}
+
+	return type;
+}
+
+GtkWidget *
+e_paned_new (GtkOrientation orientation)
+{
+	return g_object_new (E_TYPE_PANED, "orientation", orientation, NULL);
+}
+
+gint
+e_paned_get_hposition (EPaned *paned)
+{
+	g_return_val_if_fail (E_IS_PANED (paned), 0);
+
+	return paned->priv->hposition;
+}
+
+void
+e_paned_set_hposition (EPaned *paned,
+                       gint hposition)
+{
+	g_return_if_fail (E_IS_PANED (paned));
+
+	if (hposition == paned->priv->hposition)
+		return;
+
+	paned->priv->hposition = hposition;
+
+	g_object_notify (G_OBJECT (paned), "hposition");
+
+	if (e_paned_get_vertical_view (paned)) {
+		paned->priv->sync_position = TRUE;
+		gtk_widget_queue_resize (GTK_WIDGET (paned));
+	}
+}
+
+gint
+e_paned_get_vposition (EPaned *paned)
+{
+	g_return_val_if_fail (E_IS_PANED (paned), 0);
+
+	return paned->priv->vposition;
+}
+
+void
+e_paned_set_vposition (EPaned *paned,
+                       gint vposition)
+{
+	g_return_if_fail (E_IS_PANED (paned));
+
+	if (vposition == paned->priv->vposition)
+		return;
+
+	paned->priv->vposition = vposition;
+
+	g_object_notify (G_OBJECT (paned), "vposition");
+
+	if (!e_paned_get_vertical_view (paned)) {
+		paned->priv->sync_position = TRUE;
+		gtk_widget_queue_resize (GTK_WIDGET (paned));
+	}
+}
+
+gboolean
+e_paned_get_vertical_view (EPaned *paned)
+{
+	GtkOrientable *orientable;
+	GtkOrientation orientation;
+
+	g_return_val_if_fail (E_IS_PANED (paned), FALSE);
+
+	orientable = GTK_ORIENTABLE (paned);
+	orientation = gtk_orientable_get_orientation (orientable);
+
+	return (orientation == GTK_ORIENTATION_HORIZONTAL);
+}
+
+void
+e_paned_set_vertical_view (EPaned *paned,
+                           gboolean vertical_view)
+{
+	GtkOrientable *orientable;
+	GtkOrientation orientation;
+
+	g_return_if_fail (E_IS_PANED (paned));
+
+	if (vertical_view)
+		orientation = GTK_ORIENTATION_HORIZONTAL;
+	else
+		orientation = GTK_ORIENTATION_VERTICAL;
+
+	orientable = GTK_ORIENTABLE (paned);
+	gtk_orientable_set_orientation (orientable, orientation);
+}