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 #include "gtkalias.h"
  32
  33
  34 enum {
  35   SELECT,
  36   DESELECT,
  37   TOGGLE,
  38   LAST_SIGNAL
  39 };
  40
  41
  42 static void gtk_item_realize    (GtkWidget        *widget);
  43 static gint gtk_item_enter      (GtkWidget        *widget,
  44                                  GdkEventCrossing *event);
  45 static gint gtk_item_leave      (GtkWidget        *widget,
  46                                  GdkEventCrossing *event);
  47
  48
  49 static guint item_signals[LAST_SIGNAL] = { 0 };
  50
  51 G_DEFINE_ABSTRACT_TYPE (GtkItem, gtk_item, GTK_TYPE_BIN)
  52
  53 static void
  54 gtk_item_class_init (GtkItemClass *class)
  55 {
  56   GObjectClass *object_class;
  57   GtkWidgetClass *widget_class;
  58
  59   object_class = (GObjectClass*) class;
  60   widget_class = (GtkWidgetClass*) class;
  61
  62   widget_class->realize = gtk_item_realize;
  63   widget_class->enter_notify_event = gtk_item_enter;
  64   widget_class->leave_notify_event = gtk_item_leave;
  65
  66   class->select = NULL;
  67   class->deselect = NULL;
  68   class->toggle = NULL;
  69
  70   item_signals[SELECT] =
  71     g_signal_new (I_("select"),
  72                   G_OBJECT_CLASS_TYPE (object_class),
  73                   G_SIGNAL_RUN_FIRST,
  74                   G_STRUCT_OFFSET (GtkItemClass, select),
  75                   NULL, NULL,
  76                   _gtk_marshal_VOID__VOID,
  77                   G_TYPE_NONE, 0);
  78   item_signals[DESELECT] =
  79     g_signal_new (I_("deselect"),
  80                   G_OBJECT_CLASS_TYPE (object_class),
  81                   G_SIGNAL_RUN_FIRST,
  82                   G_STRUCT_OFFSET (GtkItemClass, deselect),
  83                   NULL, NULL,
  84                   _gtk_marshal_VOID__VOID,
  85                   G_TYPE_NONE, 0);
  86   item_signals[TOGGLE] =
  87     g_signal_new (I_("toggle"),
  88                   G_OBJECT_CLASS_TYPE (object_class),
  89                   G_SIGNAL_RUN_FIRST,
  90                   G_STRUCT_OFFSET (GtkItemClass, toggle),
  91                   NULL, NULL,
  92                   _gtk_marshal_VOID__VOID,
  93                   G_TYPE_NONE, 0);
  94   widget_class->activate_signal = item_signals[TOGGLE];
  95 }
  96
  97 static void
  98 gtk_item_init (GtkItem *item)
  99 {
 100   GTK_WIDGET_UNSET_FLAGS (item, GTK_NO_WINDOW);
 101 }
 102
 103 void
 104 gtk_item_select (GtkItem *item)
 105 {
 106   g_signal_emit (item, item_signals[SELECT], 0);
 107 }
 108
 109 void
 110 gtk_item_deselect (GtkItem *item)
 111 {
 112   g_signal_emit (item, item_signals[DESELECT], 0);
 113 }
 114
 115 void
 116 gtk_item_toggle (GtkItem *item)
 117 {
 118   g_signal_emit (item, item_signals[TOGGLE], 0);
 119 }
 120
 121
 122 static void
 123 gtk_item_realize (GtkWidget *widget)
 124 {
 125   GdkWindowAttr attributes;
 126   gint attributes_mask;
 127
 128   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 129
 130   attributes.x = widget->allocation.x;
 131   attributes.y = widget->allocation.y;
 132   attributes.width = widget->allocation.width;
 133   attributes.height = widget->allocation.height;
 134   attributes.window_type = GDK_WINDOW_CHILD;
 135   attributes.wclass = GDK_INPUT_OUTPUT;
 136   attributes.visual = gtk_widget_get_visual (widget);
 137   attributes.colormap = gtk_widget_get_colormap (widget);
 138   attributes.event_mask = (gtk_widget_get_events (widget) |
 139                            GDK_EXPOSURE_MASK |
 140                            GDK_BUTTON_PRESS_MASK |
 141                            GDK_BUTTON_RELEASE_MASK |
 142                            GDK_ENTER_NOTIFY_MASK |
 143                            GDK_LEAVE_NOTIFY_MASK |
 144                            GDK_POINTER_MOTION_MASK);
 145
 146   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 147   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 148   gdk_window_set_user_data (widget->window, widget);
 149
 150   widget->style = gtk_style_attach (widget->style, widget->window);
 151   gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 152   gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 153 }
 154
 155 static gint
 156 gtk_item_enter (GtkWidget        *widget,
 157                 GdkEventCrossing *event)
 158 {
 159   g_return_val_if_fail (GTK_IS_ITEM (widget), FALSE);
 160   g_return_val_if_fail (event != NULL, FALSE);
 161
 162   return gtk_widget_event (widget->parent, (GdkEvent*) event);
 163 }
 164
 165 static gint
 166 gtk_item_leave (GtkWidget        *widget,
 167                 GdkEventCrossing *event)
 168 {
 169   g_return_val_if_fail (GTK_IS_ITEM (widget), FALSE);
 170   g_return_val_if_fail (event != NULL, FALSE);
 171
 172   return gtk_widget_event (widget->parent, (GdkEvent*) event);
 173 }
 174
 175 #define __GTK_ITEM_C__
 176 #include "gtkaliasdef.c"