libspi/component.c

   1 /*
   2  * AT-SPI - Assistive Technology Service Provider Interface
   3  * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
   4  *
   5  * Copyright 2001 Sun Microsystems Inc.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 /*
  24  * component.c : bonobo wrapper for accessible component implementation
  25  *
  26  */
  27 #include <config.h>
  28 #include <bonobo/Bonobo.h>
  29
  30 #include <stdio.h>
  31
  32 /*
  33  * This pulls the CORBA definitions for the "Accessibility::Accessible" server
  34  */
  35 #include <libspi/Accessibility.h>
  36
  37 /*
  38  * This pulls the definition for the BonoboObject (Gtk Type)
  39  */
  40 #include "component.h"
  41 #include "accessible.h"
  42
  43 /*
  44  * Our parent Gtk object type
  45  */
  46 #define PARENT_TYPE BONOBO_OBJECT_TYPE
  47
  48 /*
  49  * A pointer to our parent object class
  50  */
  51 static GObjectClass *component_parent_class;
  52
  53 /*
  54  * Implemented GObject::finalize
  55  */
  56 static void
  57 accessibility_component_object_finalize (GObject *object)
  58 {
  59         Component *component = COMPONENT (object);
  60
  61         printf("accessible_component_object_finalize called\n");
  62         g_object_unref (component->atko);
  63         component->atko = NULL;
  64
  65         printf("atko freed, calling parent finalize\n");
  66         component_parent_class->finalize (object);
  67 }
  68
  69 /*
  70  * CORBA Accessibility::Component::contains method implementation
  71  */
  72 static CORBA_boolean
  73 impl_accessibility_component_contains (PortableServer_Servant servant,
  74                                        const CORBA_long x,
  75                                        const CORBA_long y,
  76                                        CORBA_short coord_type,
  77                                        CORBA_Environment     *ev)
  78 {
  79   CORBA_boolean retval;
  80   Component *component = COMPONENT (bonobo_object_from_servant (servant));
  81   retval = atk_component_contains (ATK_COMPONENT (component->atko), (gint) x, (gint) y,
  82                                   (AtkCoordType) coord_type);
  83   fprintf (stderr, "Component contains() called: %s\n", retval ? "true" : "false" );
  84   return retval;
  85 }
  86
  87 /*
  88  * CORBA Accessibility::Component::getAccessibleAtPoint method implementation
  89  */
  90 static Accessibility_Accessible
  91 impl_accessibility_component_get_accessible_at_point (PortableServer_Servant servant,
  92                                                       const CORBA_long x,
  93                                                       const CORBA_long y,
  94                                                       CORBA_short coord_type,
  95                                                       CORBA_Environment     *ev)
  96 {
  97   Accessibility_Accessible retval;
  98   Component *component = COMPONENT (bonobo_object_from_servant (servant));
  99   AtkObject *child;
 100   child = atk_component_ref_accessible_at_point (ATK_COMPONENT (component->atko),
 101                                                   (gint) x, (gint) y,
 102                                                   (AtkCoordType) coord_type);
 103   retval = bonobo_object_corba_objref (bonobo_object (accessible_new (child)));
 104   return retval;
 105 }
 106
 107 /*
 108  * CORBA Accessibility::Component::getExtents method implementation
 109  */
 110 static void
 111 impl_accessibility_component_get_extents (PortableServer_Servant servant,
 112                                           CORBA_long * x,
 113                                           CORBA_long * y,
 114                                           CORBA_long * width,
 115                                           CORBA_long * height,
 116                                           const CORBA_short coord_type,
 117                                           CORBA_Environment     *ev)
 118 {
 119   Component *component = COMPONENT (bonobo_object_from_servant (servant));
 120   gint ix, iy, iw, ih;
 121   atk_component_get_extents (ATK_COMPONENT (component->atko), &ix, &iy, &iw, &ih,
 122                                   (AtkCoordType) coord_type);
 123   *x = (CORBA_long) ix;
 124   *y = (CORBA_long) iy;
 125   *width = (CORBA_long) iw;
 126   *height = (CORBA_long) ih;
 127 }
 128
 129 /*
 130  * CORBA Accessibility::Component::getPosition method implementation
 131  */
 132 static void
 133 impl_accessibility_component_get_position (PortableServer_Servant servant,
 134                                            CORBA_long * x,
 135                                            CORBA_long * y,
 136                                            const CORBA_short coord_type,
 137                                            CORBA_Environment     *ev)
 138 {
 139   Component *component = COMPONENT (bonobo_object_from_servant (servant));
 140   gint ix, iy;
 141   atk_component_get_position (ATK_COMPONENT (component->atko), &ix, &iy,
 142                               (AtkCoordType) coord_type);
 143   *x = (CORBA_long) ix;
 144   *y = (CORBA_long) iy;
 145 }
 146
 147 /*
 148  * CORBA Accessibility::Component::getSize method implementation
 149  */
 150 static void
 151 impl_accessibility_component_get_size (PortableServer_Servant servant,
 152                                        CORBA_long * width,
 153                                        CORBA_long * height,
 154                                        CORBA_Environment     *ev)
 155 {
 156   Component *component = COMPONENT (bonobo_object_from_servant (servant));
 157   gint iw, ih;
 158   atk_component_get_size (ATK_COMPONENT (component->atko), &iw, &ih);
 159   *width = (CORBA_long) iw;
 160   *height = (CORBA_long) ih;
 161 }
 162
 163 static void
 164 accessibility_component_class_init (ComponentClass *klass)
 165 {
 166         GObjectClass * object_class = (GObjectClass *) klass;
 167         POA_Accessibility_Component__epv *epv = &klass->epv;
 168         component_parent_class = g_type_class_peek_parent (klass);
 169
 170         object_class->finalize = accessibility_component_object_finalize;
 171
 172         epv->contains = impl_accessibility_component_contains;
 173         epv->getAccessibleAtPoint = impl_accessibility_component_get_accessible_at_point;
 174         epv->getExtents = impl_accessibility_component_get_extents;
 175         epv->getPosition = impl_accessibility_component_get_position;
 176         epv->getSize = impl_accessibility_component_get_size;
 177 }
 178
 179 static void
 180 accessibility_component_init (Component *component)
 181 {
 182 }
 183
 184 GType
 185 accessibility_component_get_type (void)
 186 {
 187         static GType type = 0;
 188
 189         if (!type) {
 190                 static const GTypeInfo tinfo = {
 191                         sizeof (ComponentClass),
 192                         (GBaseInitFunc) NULL,
 193                         (GBaseFinalizeFunc) NULL,
 194                         (GClassInitFunc) accessibility_component_class_init,
 195                         (GClassFinalizeFunc) NULL,
 196                         NULL, /* class data */
 197                         sizeof (Component),
 198                         0, /* n preallocs */
 199                         (GInstanceInitFunc) accessibility_component_init,
 200                         NULL /* value table */
 201                 };
 202                 /*
 203                  * Bonobo_type_unique auto-generates a load of
 204                  * CORBA structures for us. All derived types must
 205                  * use bonobo_type_unique.
 206                  */
 207                 type = bonobo_type_unique (
 208                         PARENT_TYPE,
 209                         POA_Accessibility_Component__init,
 210                         NULL,
 211                         G_STRUCT_OFFSET (ComponentClass, epv),
 212                         &tinfo,
 213                         "AccessibleComponent");
 214         }
 215
 216         return type;
 217 }
 218
 219 Component *
 220 component_interface_new (AtkObject *o)
 221 {
 222     Component *retval =
 223                COMPONENT (g_object_new (accessibility_component_get_type (), NULL));
 224     retval->atko = o;
 225     g_object_ref (o);
 226 return retval;
 227 }