helm/software/DEVEL/gtkmathview-bonobo/src/view.c

   1 /* This file is part of GtkMathView-Bonobo, a Bonobo wrapper for GtkMathView.
   2  * Copyright (C) 2003 Luca Padovani <lpadovan@cs.unibo.it>
   3  *                    Pouria Masoudi <pmasoudi@cs.unibo.it>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  * For more information, please visit the project's home page
  20  * http://helm.cs.unibo.it/gtkmathview-bonobo
  21  * or send an email to <lpadovan@cs.unibo.it>
  22  */
  23
  24 #include <config.h>
  25
  26 #define HAVE_GMETADOM
  27 #include <gtkmathview.h>
  28
  29 #include "aux.h"
  30 #include "view.h"
  31
  32 static GObjectClass* view_parent_class;
  33
  34 static void
  35 view_object_finalize(GObject* object)
  36 {
  37   View* view = VIEW(object);
  38   /* free resources */
  39   view_parent_class->finalize(object);
  40   return;
  41 }
  42
  43 static void
  44 impl_view_freeze(PortableServer_Servant servant,
  45                  CORBA_Environment *ev)
  46 {
  47   View* view = VIEW (bonobo_object (servant));
  48   gtk_math_view_freeze(view->control_data->math_view);
  49   return;
  50 }
  51
  52 static void
  53 impl_view_thaw(PortableServer_Servant servant,
  54                CORBA_Environment *ev)
  55 {
  56   View* view = VIEW (bonobo_object (servant));
  57   gtk_math_view_thaw(view->control_data->math_view);
  58   return;
  59 }
  60
  61 static CORBA_boolean
  62 impl_view_load(PortableServer_Servant servant,
  63                const CORBA_char *uri,
  64                CORBA_Environment *ev)
  65 {
  66   View* view = VIEW (bonobo_object (servant));
  67   return gtk_math_view_load_uri(view->control_data->math_view, uri);
  68 }
  69
  70 static void
  71 impl_view_unload(PortableServer_Servant servant,
  72                  CORBA_Environment *ev)
  73 {
  74   View* view = VIEW (bonobo_object (servant));
  75   gtk_math_view_unload(view->control_data->math_view);
  76 }
  77
  78 static void
  79 impl_view_setIdAttribute (PortableServer_Servant servant,
  80                           const CORBA_char *ns,
  81                           const CORBA_char *name,
  82                           CORBA_Environment *ev)
  83 {
  84   View* view = VIEW (bonobo_object (servant));
  85   gtk_math_view_control_data_set_id_attribute(view->control_data, ns, name);
  86 }
  87
  88 static void
  89 impl_view_getIdAttribute (PortableServer_Servant servant,
  90                           CORBA_string *ns,
  91                           CORBA_string *name,
  92                           CORBA_Environment *ev)
  93 {
  94   View* view = VIEW (bonobo_object (servant));
  95   if (view->control_data->id_ns_uri != NULL)
  96     *ns = CORBA_string_dup(view->control_data->id_ns_uri->str);
  97   else
  98     *ns = NULL;
  99
 100   if (view->control_data->id_name != NULL)
 101     *name = CORBA_string_dup(view->control_data->id_name);
 102   else
 103     *name = NULL;
 104 }
 105
 106 static void
 107 impl_view_select(PortableServer_Servant servant,
 108                  const CORBA_char *id,
 109                  CORBA_Environment *ev)
 110 {
 111   View* view = VIEW (bonobo_object (servant));
 112   GdomeElement* root = gtk_math_view_get_root_element(view->control_data->math_view);
 113   if (root != NULL)
 114     {
 115       GdomeException exc = 0;
 116       GdomeElement* el = find_element_by_id(root,
 117                                             view->control_data->id_ns_uri,
 118                                             view->control_data->id_name,
 119                                             id);
 120       if (el != NULL)
 121         {
 122           gtk_math_view_select(view->control_data->math_view, el);
 123           gdome_el_unref(el, &exc);
 124           g_assert(exc == 0);
 125         }
 126       gdome_el_unref(root, &exc);
 127       g_assert(exc == 0);
 128     }
 129 }
 130
 131 static void
 132 impl_view_unselect(PortableServer_Servant servant,
 133                    const CORBA_char *id,
 134                    CORBA_Environment *ev)
 135 {
 136   View* view = VIEW (bonobo_object (servant));
 137   GdomeElement* root = gtk_math_view_get_root_element(view->control_data->math_view);
 138   if (root != NULL)
 139     {
 140       GdomeException exc = 0;
 141       GdomeElement* el = find_element_by_id(root,
 142                                             view->control_data->id_ns_uri,
 143                                             view->control_data->id_name,
 144                                             id);
 145       if (el != NULL)
 146         {
 147           gtk_math_view_unselect(view->control_data->math_view, el);
 148           gdome_el_unref(el, &exc);
 149           g_assert(exc == 0);
 150         }
 151       gdome_el_unref(root, &exc);
 152       g_assert(exc == 0);
 153     }
 154 }
 155
 156 static CORBA_boolean
 157 impl_view_isSelected(PortableServer_Servant servant,
 158                      const CORBA_char *id,
 159                      CORBA_Environment *ev)
 160 {
 161   View* view = VIEW (bonobo_object (servant));
 162   GdomeElement* root = gtk_math_view_get_root_element(view->control_data->math_view);
 163   CORBA_boolean res = CORBA_FALSE;
 164   if (root != NULL)
 165     {
 166       GdomeException exc = 0;
 167       GdomeElement* el = find_element_by_id(root,
 168                                             view->control_data->id_ns_uri,
 169                                             view->control_data->id_name,
 170                                             id);
 171       if (el != NULL)
 172         {
 173           res = gtk_math_view_is_selected(view->control_data->math_view, el) ? CORBA_TRUE : CORBA_FALSE;
 174           gdome_el_unref(el, &exc);
 175           g_assert(exc == 0);
 176         }
 177       gdome_el_unref(root, &exc);
 178       g_assert(exc == 0);
 179     }
 180   return res;
 181 }
 182
 183 static CORBA_boolean
 184 impl_view_elementCoords(PortableServer_Servant servant,
 185                         const CORBA_char *id,
 186                         CORBA_short *x, CORBA_short *y,
 187                         CORBA_Environment *ev)
 188 {
 189   View* view = VIEW (bonobo_object (servant));
 190   GdomeElement* root = gtk_math_view_get_root_element(view->control_data->math_view);
 191   CORBA_boolean res = CORBA_FALSE;
 192   if (root != NULL)
 193     {
 194       GdomeException exc = 0;
 195       GdomeElement* el = find_element_by_id(root,
 196                                             view->control_data->id_ns_uri,
 197                                             view->control_data->id_name,
 198                                             id);
 199       if (el != NULL)
 200         {
 201           gint xx;
 202           gint yy;
 203           res = gtk_math_view_get_element_coords(view->control_data->math_view, el, &xx, &yy) ? CORBA_TRUE : CORBA_FALSE;
 204           gdome_el_unref(el, &exc);
 205           g_assert(exc == 0);
 206           *x = xx;
 207           *y = yy;
 208         }
 209       gdome_el_unref(root, &exc);
 210       g_assert(exc == 0);
 211     }
 212   return res;
 213 }
 214
 215 static CORBA_boolean
 216 impl_view_elementBoundingBox(PortableServer_Servant servant,
 217                              const CORBA_char *id,
 218                              CORBA_short *width, CORBA_short *height, CORBA_short *depth,
 219                              CORBA_Environment *ev)
 220 {
 221   View* view = VIEW (bonobo_object (servant));
 222   GdomeElement* root = gtk_math_view_get_root_element(view->control_data->math_view);
 223   CORBA_boolean res = CORBA_FALSE;
 224   if (root != NULL)
 225     {
 226       GdomeException exc = 0;
 227       GdomeElement* el = find_element_by_id(root,
 228                                             view->control_data->id_ns_uri,
 229                                             view->control_data->id_name,
 230                                             id);
 231       if (el != NULL)
 232         {
 233           gint w;
 234           gint h;
 235           gint d;
 236           res = gtk_math_view_get_element_bounding_box(view->control_data->math_view, el, &w, &h, &d) ? CORBA_TRUE : CORBA_FALSE;
 237           gdome_el_unref(el, &exc);
 238           g_assert(exc == 0);
 239           *width = w;
 240           *height = h;
 241           *depth = d;
 242         }
 243       gdome_el_unref(root, &exc);
 244       g_assert(exc == 0);
 245     }
 246   return res;
 247 }
 248
 249 static void
 250 impl_view_getSize(PortableServer_Servant servant,
 251                   CORBA_short *width, CORBA_short *height,
 252                   CORBA_Environment *ev)
 253 {
 254   View* view = VIEW (bonobo_object (servant));
 255   *width = gtk_math_view_get_width(view->control_data->math_view);
 256   *height = gtk_math_view_get_height(view->control_data->math_view);
 257 }
 258
 259 static void
 260 impl_view_getTop(PortableServer_Servant servant,
 261                  CORBA_short *x, CORBA_short *y,
 262                  CORBA_Environment *ev)
 263 {
 264   View* view = VIEW (bonobo_object (servant));
 265   gint xx;
 266   gint yy;
 267   gtk_math_view_get_top(view->control_data->math_view, &xx, &yy);
 268   *x = xx;
 269   *y = yy;
 270 }
 271
 272 static void
 273 impl_view_setTop (PortableServer_Servant servant,
 274                   CORBA_short x, CORBA_short y,
 275                   CORBA_Environment *ev)
 276 {
 277   View* view = VIEW (bonobo_object (servant));
 278   gtk_math_view_set_top(view->control_data->math_view, x, y);
 279 }
 280
 281 static void
 282 impl_view_setDefaultFontSize(PortableServer_Servant servant,
 283                              CORBA_short size,
 284                              CORBA_Environment *ev)
 285 {
 286   View* view = VIEW (bonobo_object (servant));
 287   gtk_math_view_set_font_size(view->control_data->math_view, size);
 288 }
 289
 290 static short
 291 impl_view_getDefaultFontSize(PortableServer_Servant servant,
 292                              CORBA_Environment *ev)
 293 {
 294   View* view = VIEW (bonobo_object (servant));
 295   return gtk_math_view_get_font_size(view->control_data->math_view);
 296 }
 297
 298 static void
 299 impl_view_setVerbosity(PortableServer_Servant servant,
 300                        const CORBA_short level,
 301                        CORBA_Environment *ev)
 302 {
 303   View* view = VIEW (bonobo_object (servant));
 304   gtk_math_view_set_log_verbosity(view->control_data->math_view, level);
 305 }
 306
 307 static short
 308 impl_view_getVerbosity(PortableServer_Servant servant,
 309                        CORBA_Environment *ev)
 310 {
 311   View* view = VIEW (bonobo_object (servant));
 312   return gtk_math_view_get_log_verbosity(view->control_data->math_view);
 313 }
 314
 315 static void
 316 view_class_init(ViewClass* klass)
 317 {
 318   GObjectClass* object_class = (GObjectClass *) klass;
 319   POA_GNOME_GtkMathView_View__epv* epv = &klass->epv;
 320
 321   view_parent_class = g_type_class_peek_parent (klass);
 322   object_class->finalize = view_object_finalize;
 323
 324   epv->freeze = impl_view_freeze;
 325   epv->thaw = impl_view_thaw;
 326   epv->load = impl_view_load;
 327   epv->unload = impl_view_unload;
 328   epv->setIdAttribute = impl_view_setIdAttribute;
 329   epv->getIdAttribute = impl_view_getIdAttribute;
 330   epv->select = impl_view_select;
 331   epv->unselect = impl_view_unselect;
 332   epv->isSelected = impl_view_isSelected;
 333   epv->elementCoords = impl_view_elementCoords;
 334   epv->elementBoundingBox = impl_view_elementBoundingBox;
 335   epv->getSize = impl_view_getSize;
 336   epv->getTop = impl_view_getTop;
 337   epv->setTop = impl_view_setTop;
 338   epv->setDefaultFontSize = impl_view_setDefaultFontSize;
 339   epv->getDefaultFontSize = impl_view_getDefaultFontSize;
 340   epv->setVerbosity = impl_view_setVerbosity;
 341   epv->getVerbosity = impl_view_getVerbosity;
 342 }
 343
 344 static void
 345 view_init(View* view)
 346 {
 347   /* do some initialization */
 348 }
 349
 350 View*
 351 view_new(GtkMathViewControlData* control_data)
 352 {
 353   View* view;
 354   g_return_val_if_fail(control_data != NULL, NULL);
 355   view = g_object_new(VIEW_TYPE, NULL);
 356   view->control_data = control_data;
 357   return view;
 358 }
 359
 360 BONOBO_TYPE_FUNC_FULL (View, GNOME_GtkMathView_View, BONOBO_TYPE_OBJECT, view)
 361