git.maemo.org Git - hildon/blob - hildon/hildon-stackable-window.c

   1 /*
   2  * This file is a part of hildon
   3  *
   4  * Copyright (C) 2008 Nokia Corporation, all rights reserved.
   5  *
   6  * Contact: Rodrigo Novo <rodrigo.novo@nokia.com>
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public License
  10  * as published by the Free Software Foundation; version 2.1 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  *
  23  */
  24
  25 /**
  26  * SECTION:hildon-stackable-window
  27  * @short_description: Widget representing a stackable, top-level window in the Hildon framework.
  28  * @see_also: #HildonWindowStack, #HildonProgram, #HildonWindow
  29  *
  30  * The #HildonStackableWindow is a GTK+ widget which represents a
  31  * top-level window in the Hildon framework. It is derived from
  32  * #HildonWindow. Applications that use stackable windows are organized
  33  * in a hierarchical way so users can go from any window back to the
  34  * application's root window.
  35  *
  36  * The user can only see and interact with the window on top of the
  37  * stack. Although all other windows are mapped and visible, they are
  38  * obscured by the topmost one so in practice they appear as if they
  39  * were hidden.
  40  *
  41  * To add a window to the stack, just use gtk_widget_show(). The
  42  * previous one will be obscured by the new one. When the new window
  43  * is destroyed, the previous one will appear again.
  44  *
  45  * Alternatively, you can remove a window from the top of the stack
  46  * without destroying it by using hildon_window_stack_pop(). The
  47  * window will be automatically hidden and the previous one will
  48  * appear.
  49  *
  50  * For advanced details on stack handling, see #HildonWindowStack
  51  *
  52  * <example>
  53  * <title>Basic HildonStackableWindow example</title>
  54  * <programlisting>
  55  * static void
  56  * show_new_window (void)
  57  * {
  58  *     GtkWidget *win;
  59  * <!-- -->
  60  *     win = hildon_stackable_window_new ();
  61  * <!-- -->
  62  *     // ... configure new window
  63  * <!-- -->
  64  *     gtk_widget_show (win);
  65  * }
  66  * <!-- -->
  67  * int
  68  * main (int argc, char **argv)
  69  * {
  70  *     GtkWidget *win;
  71  *     GtkWidget *button;
  72  * <!-- -->
  73  *     gtk_init (&amp;argc, &amp;args);
  74  * <!-- -->
  75  *     win = hildon_stackable_window_new ();
  76  *     gtk_window_set_title (GTK_WINDOW (win), "Main window);
  77  * <!-- -->
  78  *     // ... add some widgets to the window
  79  * <!-- -->
  80  *     g_signal_connect (button, "clicked", G_CALLBACK (show_new_window), NULL);
  81  *     g_signal_connect (win, "destroy", G_CALLBACK (gtk_main_quit), NULL);
  82  * <!-- -->
  83  *     gtk_widget_show_all (win);
  84  *     gtk_main ();
  85  * <!-- -->
  86  *     return 0;
  87  * }
  88  * </programlisting>
  89  * </example>
  90  */
  91
  92 #include                                        <X11/X.h>
  93 #include                                        <X11/Xatom.h>
  94 #include                                        <gdk/gdkx.h>
  95
  96 #include                                        "hildon-stackable-window.h"
  97 #include                                        "hildon-stackable-window-private.h"
  98 #include                                        "hildon-window-stack.h"
  99 #include                                        "hildon-window-stack-private.h"
 100
 101 G_DEFINE_TYPE (HildonStackableWindow, hildon_stackable_window, HILDON_TYPE_WINDOW);
 102
 103 void G_GNUC_INTERNAL
 104 hildon_stackable_window_set_stack               (HildonStackableWindow *self,
 105                                                  HildonWindowStack     *stack,
 106                                                  gint                   position)
 107 {
 108     HildonStackableWindowPrivate *priv = HILDON_STACKABLE_WINDOW_GET_PRIVATE (self);
 109
 110     if (stack)
 111         g_object_ref (stack);
 112
 113     if (priv->stack)
 114         g_object_unref (priv->stack);
 115
 116     priv->stack = stack;
 117     priv->stack_position = position;
 118 }
 119
 120 /**
 121  * hildon_stackable_window_get_stack:
 122  * @self: a #HildonStackableWindow
 123  *
 124  * Returns the stack where window @self is on, or %NULL if the window
 125  * is not stacked.
 126  *
 127  * Return value: a #HildonWindowStack, or %NULL
 128  *
 129  * Since: 2.2
 130  **/
 131 HildonWindowStack *
 132 hildon_stackable_window_get_stack               (HildonStackableWindow *self)
 133 {
 134     HildonStackableWindowPrivate *priv;
 135
 136     g_return_val_if_fail (HILDON_IS_STACKABLE_WINDOW (self), NULL);
 137
 138     priv = HILDON_STACKABLE_WINDOW_GET_PRIVATE (self);
 139
 140     return priv->stack;
 141 }
 142
 143 /**
 144  * hildon_stackable_window_set_main_menu:
 145  * @self: a #HildonStackableWindow
 146  * @menu: a #HildonAppMenu to be used for this window
 147  *
 148  * Sets the menu to be used for this window.
 149  *
 150  * Deprecated: Hildon 2.2: use hildon_window_set_app_menu()
 151  **/
 152 void
 153 hildon_stackable_window_set_main_menu           (HildonStackableWindow *self,
 154                                                  HildonAppMenu *menu)
 155 {
 156     hildon_window_set_app_menu (HILDON_WINDOW (self), menu);
 157 }
 158
 159 static void
 160 hildon_stackable_window_map                     (GtkWidget *widget)
 161 {
 162     GdkDisplay *display;
 163     Atom atom;
 164     unsigned long val;
 165     HildonStackableWindowPrivate *priv = HILDON_STACKABLE_WINDOW_GET_PRIVATE (widget);
 166
 167     val = priv->stack_position;
 168
 169     /* Set additional property "_HILDON_STACKABLE_WINDOW", to allow the WM to manage
 170        it as a stackable window. */
 171     display = gdk_drawable_get_display (widget->window);
 172     atom = gdk_x11_get_xatom_by_name_for_display (display, "_HILDON_STACKABLE_WINDOW");
 173     XChangeProperty (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (widget->window), atom,
 174                      XA_INTEGER, 32, PropModeReplace,
 175                      (unsigned char *) &val, 1);
 176
 177     GTK_WIDGET_CLASS (hildon_stackable_window_parent_class)->map (widget);
 178 }
 179
 180 static void
 181 hildon_stackable_window_show                    (GtkWidget *widget)
 182 {
 183     HildonStackableWindowPrivate *priv = HILDON_STACKABLE_WINDOW_GET_PRIVATE (widget);
 184
 185     /* Stack the window if not already stacked */
 186     if (priv->stack == NULL) {
 187         HildonWindowStack *stack = hildon_window_stack_get_default ();
 188         _hildon_window_stack_do_push (stack, HILDON_STACKABLE_WINDOW (widget));
 189     }
 190
 191     GTK_WIDGET_CLASS (hildon_stackable_window_parent_class)->show (widget);
 192 }
 193
 194 static void
 195 hildon_stackable_window_hide                    (GtkWidget *widget)
 196 {
 197     HildonStackableWindowPrivate *priv = HILDON_STACKABLE_WINDOW_GET_PRIVATE (widget);
 198
 199     if (priv->stack) {
 200         hildon_window_stack_remove (HILDON_STACKABLE_WINDOW (widget));
 201     }
 202
 203     GTK_WIDGET_CLASS (hildon_stackable_window_parent_class)->hide (widget);
 204 }
 205
 206 static gboolean
 207 hildon_stackable_window_delete_event            (GtkWidget   *widget,
 208                                                  GdkEventAny *event)
 209 {
 210     HildonStackableWindowPrivate *priv = HILDON_STACKABLE_WINDOW_GET_PRIVATE (widget);
 211     gboolean retvalue = FALSE;
 212
 213     if (priv->stack && hildon_window_stack_peek (priv->stack) != widget) {
 214         /* Ignore the delete event if this window is not the topmost one */
 215         retvalue = TRUE;
 216     } else if (GTK_WIDGET_CLASS (hildon_stackable_window_parent_class)->delete_event) {
 217         retvalue = GTK_WIDGET_CLASS (hildon_stackable_window_parent_class)->delete_event (widget, event);
 218     }
 219
 220     return retvalue;
 221 }
 222
 223 static void
 224 hildon_stackable_window_class_init              (HildonStackableWindowClass *klass)
 225 {
 226     GtkWidgetClass    *widget_class = GTK_WIDGET_CLASS (klass);
 227
 228     widget_class->map               = hildon_stackable_window_map;
 229     widget_class->show              = hildon_stackable_window_show;
 230     widget_class->hide              = hildon_stackable_window_hide;
 231     widget_class->delete_event      = hildon_stackable_window_delete_event;
 232
 233     g_type_class_add_private (klass, sizeof (HildonStackableWindowPrivate));
 234 }
 235
 236 static void
 237 hildon_stackable_window_init                    (HildonStackableWindow *self)
 238 {
 239     HildonStackableWindowPrivate *priv = HILDON_STACKABLE_WINDOW_GET_PRIVATE (self);
 240
 241     priv->stack = NULL;
 242     priv->stack_position = -1;
 243 }
 244
 245 /**
 246  * hildon_stackable_window_new:
 247  *
 248  * Creates a new #HildonStackableWindow.
 249  *
 250  * Return value: A #HildonStackableWindow
 251  *
 252  * Since: 2.2
 253  **/
 254 GtkWidget*
 255 hildon_stackable_window_new                     (void)
 256 {
 257     HildonStackableWindow *newwindow = g_object_new (HILDON_TYPE_STACKABLE_WINDOW, NULL);
 258
 259     return GTK_WIDGET (newwindow);
 260 }