Pileus Git - ~andy/gtk/blob - gtk/gtkitem.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include "config.h"
  28 #include "gtkitem.h"
  29 #include "gtkmarshalers.h"
  30 #include "gtkintl.h"
  31
  32
  33 enum {
  34   SELECT,
  35   DESELECT,
  36   TOGGLE,
  37   LAST_SIGNAL
  38 };
  39
  40
  41 static void gtk_item_realize    (GtkWidget        *widget);
  42 static gint gtk_item_enter      (GtkWidget        *widget,
  43                                  GdkEventCrossing *event);
  44 static gint gtk_item_leave      (GtkWidget        *widget,
  45                                  GdkEventCrossing *event);
  46
  47
  48 static guint item_signals[LAST_SIGNAL] = { 0 };
  49
  50 G_DEFINE_ABSTRACT_TYPE (GtkItem, gtk_item, GTK_TYPE_BIN)
  51
  52 static void
  53 gtk_item_class_init (GtkItemClass *class)
  54 {
  55   GObjectClass *object_class;
  56   GtkWidgetClass *widget_class;
  57
  58   object_class = (GObjectClass*) class;
  59   widget_class = (GtkWidgetClass*) class;
  60
  61   widget_class->realize = gtk_item_realize;
  62   widget_class->enter_notify_event = gtk_item_enter;
  63   widget_class->leave_notify_event = gtk_item_leave;
  64
  65   class->select = NULL;
  66   class->deselect = NULL;
  67   class->toggle = NULL;
  68
  69   item_signals[SELECT] =
  70     g_signal_new (I_("select"),
  71                   G_OBJECT_CLASS_TYPE (object_class),
  72                   G_SIGNAL_RUN_FIRST,
  73                   G_STRUCT_OFFSET (GtkItemClass, select),
  74                   NULL, NULL,
  75                   _gtk_marshal_VOID__VOID,
  76                   G_TYPE_NONE, 0);
  77   item_signals[DESELECT] =
  78     g_signal_new (I_("deselect"),
  79                   G_OBJECT_CLASS_TYPE (object_class),
  80                   G_SIGNAL_RUN_FIRST,
  81                   G_STRUCT_OFFSET (GtkItemClass, deselect),
  82                   NULL, NULL,
  83                   _gtk_marshal_VOID__VOID,
  84                   G_TYPE_NONE, 0);
  85   item_signals[TOGGLE] =
  86     g_signal_new (I_("toggle"),
  87                   G_OBJECT_CLASS_TYPE (object_class),
  88                   G_SIGNAL_RUN_FIRST,
  89                   G_STRUCT_OFFSET (GtkItemClass, toggle),
  90                   NULL, NULL,
  91                   _gtk_marshal_VOID__VOID,
  92                   G_TYPE_NONE, 0);
  93   widget_class->activate_signal = item_signals[TOGGLE];
  94 }
  95
  96 static void
  97 gtk_item_init (GtkItem *item)
  98 {
  99   gtk_widget_set_has_window (GTK_WIDGET (item), TRUE);
 100 }
 101
 102 void
 103 gtk_item_select (GtkItem *item)
 104 {
 105   g_signal_emit (item, item_signals[SELECT], 0);
 106 }
 107
 108 void
 109 gtk_item_deselect (GtkItem *item)
 110 {
 111   g_signal_emit (item, item_signals[DESELECT], 0);
 112 }
 113
 114 void
 115 gtk_item_toggle (GtkItem *item)
 116 {
 117   g_signal_emit (item, item_signals[TOGGLE], 0);
 118 }
 119
 120
 121 static void
 122 gtk_item_realize (GtkWidget *widget)
 123 {
 124   GdkWindowAttr attributes;
 125   gint attributes_mask;
 126
 127   gtk_widget_set_realized (widget, TRUE);
 128
 129   attributes.x = widget->allocation.x;
 130   attributes.y = widget->allocation.y;
 131   attributes.width = widget->allocation.width;
 132   attributes.height = widget->allocation.height;
 133   attributes.window_type = GDK_WINDOW_CHILD;
 134   attributes.wclass = GDK_INPUT_OUTPUT;
 135   attributes.visual = gtk_widget_get_visual (widget);
 136   attributes.colormap = gtk_widget_get_colormap (widget);
 137   attributes.event_mask = (gtk_widget_get_events (widget) |
 138                            GDK_EXPOSURE_MASK |
 139                            GDK_BUTTON_PRESS_MASK |
 140                            GDK_BUTTON_RELEASE_MASK |
 141                            GDK_ENTER_NOTIFY_MASK |
 142                            GDK_LEAVE_NOTIFY_MASK |
 143                            GDK_POINTER_MOTION_MASK);
 144
 145   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 146   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 147   gdk_window_set_user_data (widget->window, widget);
 148
 149   widget->style = gtk_style_attach (widget->style, widget->window);
 150   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 151   gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 152 }
 153
 154 static gint
 155 gtk_item_enter (GtkWidget        *widget,
 156                 GdkEventCrossing *event)
 157 {
 158   g_return_val_if_fail (GTK_IS_ITEM (widget), FALSE);
 159   g_return_val_if_fail (event != NULL, FALSE);
 160
 161   return gtk_widget_event (widget->parent, (GdkEvent*) event);
 162 }
 163
 164 static gint
 165 gtk_item_leave (GtkWidget        *widget,
 166                 GdkEventCrossing *event)
 167 {
 168   g_return_val_if_fail (GTK_IS_ITEM (widget), FALSE);
 169   g_return_val_if_fail (event != NULL, FALSE);
 170
 171   return gtk_widget_event (widget->parent, (GdkEvent*) event);
 172 }