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authorEttore Perazzoli <ettore@src.gnome.org>2001-01-27 18:13:45 +0800
committerEttore Perazzoli <ettore@src.gnome.org>2001-01-27 18:13:45 +0800
commitf0404a284a029a4b3a8755219195f31c04ca857b (patch)
treed0c7e46fa9cf4e450766a6a263ba14e10c80510e /widgets/misc/e-dropdown-button.c
parent3a1c97a34cdb157a0523074284b3a998e38e5657 (diff)
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New, simple dropdown button widget based on the thing that Damon did
in `e-meeting-time-sel.c'. svn path=/trunk/; revision=7851
Diffstat (limited to 'widgets/misc/e-dropdown-button.c')
-rw-r--r--widgets/misc/e-dropdown-button.c218
1 files changed, 218 insertions, 0 deletions
diff --git a/widgets/misc/e-dropdown-button.c b/widgets/misc/e-dropdown-button.c
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+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+/* e-dropdown-menu.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.
+ *
+ * Authors:
+ * Ettore Perazzoli <ettore@ximian.com>
+ * Damon Chaplin <damon@ximian.com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+
+#include <gtk/gtk.h>
+#include <gal/util/e-util.h>
+
+#include "e-dropdown-button.h"
+
+
+struct _EDropdownButtonPrivate {
+ GtkAccelGroup *accel_group;
+ GtkWidget *menu;
+};
+
+#define PARENT_TYPE gtk_button_get_type ()
+static GtkButtonClass *parent_class = NULL;
+
+
+/* Callback to position the pop-up menu. */
+
+static void
+menu_position_cb (GtkMenu *menu,
+ int *x,
+ int *y,
+ void *data)
+{
+ EDropdownButton *dropdown_button;
+ EDropdownButtonPrivate *priv;
+ GtkRequisition menu_requisition;
+ int max_x, max_y;
+
+ dropdown_button = E_DROPDOWN_BUTTON (data);
+ priv = dropdown_button->priv;
+
+ /* Calculate our preferred position. */
+ gdk_window_get_origin (GTK_WIDGET (dropdown_button)->window, x, y);
+ *y += GTK_WIDGET (dropdown_button)->allocation.height;
+
+ /* Now make sure we are on the screen. */
+ gtk_widget_size_request (GTK_WIDGET (priv->menu), &menu_requisition);
+ max_x = MAX (0, gdk_screen_width () - menu_requisition.width);
+ max_y = MAX (0, gdk_screen_height () - menu_requisition.height);
+
+ *x = CLAMP (*x, 0, max_x);
+ *y = CLAMP (*y, 0, max_y);
+}
+
+
+/* GtkObject methods. */
+
+static void
+impl_destroy (GtkObject *object)
+{
+ EDropdownButton *dropdown_button;
+ EDropdownButtonPrivate *priv;
+
+ dropdown_button = E_DROPDOWN_BUTTON (object);
+ priv = dropdown_button->priv;
+
+ gtk_accel_group_unref (priv->accel_group);
+ gtk_widget_destroy (priv->menu);
+
+ g_free (priv);
+}
+
+
+/* GtkButton methods. */
+
+static void
+impl_clicked (GtkButton *button)
+{
+ EDropdownButton *dropdown_button;
+ EDropdownButtonPrivate *priv;
+
+ dropdown_button = E_DROPDOWN_BUTTON (button);
+ priv = dropdown_button->priv;
+
+ if (GTK_BUTTON_CLASS (parent_class)->clicked != NULL)
+ (* GTK_BUTTON_CLASS (parent_class)->clicked) (button);
+
+ gtk_menu_popup (GTK_MENU (priv->menu), NULL, NULL,
+ menu_position_cb, dropdown_button,
+ 1, GDK_CURRENT_TIME);
+}
+
+
+static void
+class_init (EDropdownButtonClass *klass)
+{
+ GtkObjectClass *object_class;
+ GtkButtonClass *button_class;
+
+ object_class = GTK_OBJECT_CLASS (klass);
+ button_class = GTK_BUTTON_CLASS (klass);
+
+ object_class->destroy = impl_destroy;
+
+ button_class->clicked = impl_clicked;
+
+ parent_class = gtk_type_class (gtk_button_get_type ());
+}
+
+
+static void
+init (EDropdownButton *dropdown_button)
+{
+ EDropdownButtonPrivate *priv;
+
+ priv = g_new (EDropdownButtonPrivate, 1);
+ priv->accel_group = gtk_accel_group_new ();
+ priv->menu = NULL;
+
+ dropdown_button->priv = priv;
+}
+
+
+void
+e_dropdown_button_construct (EDropdownButton *dropdown_button,
+ const char *label_text,
+ GtkMenu *menu,
+ GnomeUIInfo *ui_info,
+ void *data)
+{
+ EDropdownButtonPrivate *priv;
+ GtkWidget *hbox;
+ GtkWidget *arrow;
+ GtkWidget *label;
+ unsigned int accel_key;
+
+ g_return_if_fail (dropdown_button != NULL);
+ g_return_if_fail (E_IS_DROPDOWN_BUTTON (dropdown_button));
+ g_return_if_fail (label_text != NULL);
+ g_return_if_fail (menu != NULL);
+ g_return_if_fail (GTK_IS_MENU (menu));
+ g_return_if_fail (ui_info != NULL);
+
+ priv = dropdown_button->priv;
+
+ hbox = gtk_hbox_new (FALSE, 2);
+ gtk_container_add (GTK_CONTAINER (dropdown_button), hbox);
+ gtk_widget_show (hbox);
+
+ label = gtk_label_new ("");
+ accel_key = gtk_label_parse_uline (GTK_LABEL (label), label_text);
+ gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 0);
+ gtk_widget_show (label);
+ gtk_widget_add_accelerator (GTK_WIDGET (dropdown_button), "clicked",
+ priv->accel_group, accel_key, GDK_MOD1_MASK, 0);
+
+ arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT);
+ gtk_box_pack_start (GTK_BOX (hbox), arrow, FALSE, FALSE, 2);
+ gtk_widget_show (arrow);
+
+ priv->menu = GTK_WIDGET (menu);
+ gnome_app_fill_menu_with_data (GTK_MENU_SHELL (priv->menu), ui_info,
+ priv->accel_group, TRUE, 0, data);
+}
+
+/**
+ * e_dropdown_button_new:
+ * @label_text:
+ * @menu:
+ * @ui_info:
+ * @data:
+ *
+ * Create a new dropdown button.
+ *
+ * Return value:
+ **/
+GtkWidget *
+e_dropdown_button_new (const char *label_text,
+ GtkMenu *menu,
+ GnomeUIInfo *ui_info,
+ void *data)
+{
+ GtkWidget *widget;
+
+ g_return_val_if_fail (label_text != NULL, NULL);
+ g_return_val_if_fail (menu != NULL, NULL);
+ g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
+ g_return_val_if_fail (ui_info != NULL, NULL);
+
+ widget = gtk_type_new (e_dropdown_button_get_type ());
+
+ e_dropdown_button_construct (E_DROPDOWN_BUTTON (widget), label_text, menu, ui_info, data);
+
+ return widget;
+}
+
+
+E_MAKE_TYPE (e_dropdown_button, "EDropdownButton", EDropdownButton, class_init, init, PARENT_TYPE)