From 0e1066b431b3d172c18b7be8744875942515e117 Mon Sep 17 00:00:00 2001 From: Matthew Barnes Date: Wed, 26 Aug 2009 23:46:56 -0400 Subject: Add EPaned widget to generalize vertical view. --- widgets/misc/e-paned.c | 344 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 344 insertions(+) create mode 100644 widgets/misc/e-paned.c (limited to 'widgets/misc/e-paned.c') 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 + * + * + * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com) + * + */ + +#include "e-paned.h" + +#include +#include + +#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 = >K_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); +} -- cgit v1.2.3