pintos-os.org Git - pspp/blob - src/ui/gui/psppire-dictview.c

   1 /* PSPPIRE - a graphical user interface for PSPP.
   2    Copyright (C) 2009, 2010, 2011, 2012  Free Software Foundation
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  16
  17 #include <config.h>
  18
  19 #include <gtk/gtk.h>
  20 #include "psppire-dictview.h"
  21 #include "psppire-dict.h"
  22 #include "psppire-conf.h"
  23 #include <data/format.h>
  24 #include <libpspp/i18n.h>
  25 #include "helper.h"
  26
  27 #include <gettext.h>
  28 #define _(msgid) gettext (msgid)
  29 #define N_(msgid) msgid
  30
  31 static void psppire_dict_view_base_finalize (PsppireDictViewClass *, gpointer);
  32 static void psppire_dict_view_base_init     (PsppireDictViewClass *class);
  33 static void psppire_dict_view_class_init    (PsppireDictViewClass *class);
  34 static void psppire_dict_view_init          (PsppireDictView      *dict_view);
  35
  36
  37 GType
  38 psppire_dict_view_get_type (void)
  39 {
  40   static GType psppire_dict_view_type = 0;
  41
  42   if (!psppire_dict_view_type)
  43     {
  44       static const GTypeInfo psppire_dict_view_info =
  45       {
  46         sizeof (PsppireDictViewClass),
  47         (GBaseInitFunc) psppire_dict_view_base_init,
  48         (GBaseFinalizeFunc) psppire_dict_view_base_finalize,
  49         (GClassInitFunc)psppire_dict_view_class_init,
  50         (GClassFinalizeFunc) NULL,
  51         NULL,
  52         sizeof (PsppireDictView),
  53         0,
  54         (GInstanceInitFunc) psppire_dict_view_init,
  55       };
  56
  57       psppire_dict_view_type =
  58         g_type_register_static (GTK_TYPE_TREE_VIEW, "PsppireDictView",
  59                                 &psppire_dict_view_info, 0);
  60     }
  61
  62   return psppire_dict_view_type;
  63 }
  64
  65
  66 static void
  67 psppire_dict_view_finalize (GObject *object)
  68 {
  69   PsppireDictView *dict_view = PSPPIRE_DICT_VIEW (object);
  70
  71   gtk_widget_destroy (dict_view->menu);
  72 }
  73
  74 /* Properties */
  75 enum
  76 {
  77   PROP_0,
  78   PROP_DICTIONARY,
  79   PROP_PREDICATE,
  80   PROP_SELECTION_MODE
  81 };
  82
  83
  84 /* A GtkTreeModelFilterVisibleFunc to filter lines in the treeview */
  85 static gboolean
  86 filter_variables (GtkTreeModel *model, GtkTreeIter *iter, gpointer data)
  87 {
  88   var_predicate_func *predicate = data;
  89   struct variable *var;
  90   PsppireDict *dict = PSPPIRE_DICT (model);
  91
  92   GtkTreePath *path = gtk_tree_model_get_path (model, iter);
  93
  94   gint *idx = gtk_tree_path_get_indices (path);
  95
  96   var =  psppire_dict_get_variable (dict, *idx);
  97
  98   gtk_tree_path_free (path);
  99
 100   return predicate (var);
 101 }
 102
 103 static void
 104 set_model (PsppireDictView *dict_view)
 105 {
 106   GtkTreeModel *model ;
 107
 108   if ( dict_view->dict == NULL)
 109     return;
 110
 111    if ( dict_view->predicate )
 112     {
 113       model = gtk_tree_model_filter_new (GTK_TREE_MODEL (dict_view->dict),
 114                                          NULL);
 115
 116       gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (model),
 117                                               filter_variables,
 118                                               dict_view->predicate,
 119                                               NULL);
 120     }
 121   else
 122     {
 123       model = GTK_TREE_MODEL (dict_view->dict);
 124       g_object_ref (model);
 125     }
 126
 127   gtk_tree_view_set_model (GTK_TREE_VIEW (dict_view), model);
 128   g_object_unref (model);
 129 }
 130
 131 static void
 132 psppire_dict_view_set_property (GObject         *object,
 133                                guint            prop_id,
 134                                const GValue    *value,
 135                                GParamSpec      *pspec)
 136 {
 137   PsppireDictView *dict_view = PSPPIRE_DICT_VIEW (object);
 138
 139   switch (prop_id)
 140     {
 141     case PROP_DICTIONARY:
 142       dict_view->dict = g_value_get_object (value);
 143       break;
 144     case PROP_PREDICATE:
 145       dict_view->predicate = g_value_get_pointer (value);
 146       break;
 147     case PROP_SELECTION_MODE:
 148       {
 149         GtkTreeSelection *selection =
 150           gtk_tree_view_get_selection (GTK_TREE_VIEW (dict_view));
 151
 152         GtkSelectionMode mode = g_value_get_enum (value);
 153
 154         gtk_tree_selection_set_mode (selection, mode);
 155       }
 156       break;
 157     default:
 158       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 159       break;
 160     };
 161
 162
 163   set_model (dict_view);
 164 }
 165
 166
 167 static void
 168 psppire_dict_view_get_property (GObject         *object,
 169                                guint            prop_id,
 170                                GValue          *value,
 171                                GParamSpec      *pspec)
 172 {
 173   PsppireDictView *dict_view = PSPPIRE_DICT_VIEW (object);
 174
 175   switch (prop_id)
 176     {
 177     case PROP_DICTIONARY:
 178       g_value_set_object (value, dict_view->dict);
 179       break;
 180     case PROP_PREDICATE:
 181       g_value_set_pointer (value, dict_view->predicate);
 182       break;
 183     case PROP_SELECTION_MODE:
 184       {
 185         GtkTreeSelection *selection =
 186           gtk_tree_view_get_selection (GTK_TREE_VIEW (dict_view));
 187
 188         g_value_set_enum (value, gtk_tree_selection_get_mode (selection));
 189       }
 190     default:
 191       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 192       break;
 193     };
 194 }
 195
 196
 197
 198 static void
 199 psppire_dict_view_class_init (PsppireDictViewClass *class)
 200 {
 201   GObjectClass *object_class = G_OBJECT_CLASS (class);
 202
 203   GParamSpec *predicate_spec =
 204     g_param_spec_pointer ("predicate",
 205                           "Predicate",
 206                           "A predicate function",
 207                           G_PARAM_READABLE | G_PARAM_WRITABLE);
 208
 209
 210   GParamSpec *selection_mode_spec =
 211     g_param_spec_enum ("selection-mode",
 212                        "Selection Mode",
 213                        "How many things can be selected",
 214                        GTK_TYPE_SELECTION_MODE,
 215                        GTK_SELECTION_MULTIPLE,
 216                        G_PARAM_CONSTRUCT | G_PARAM_READABLE | G_PARAM_WRITABLE);
 217
 218   object_class->set_property = psppire_dict_view_set_property;
 219   object_class->get_property = psppire_dict_view_get_property;
 220
 221   g_object_class_override_property (object_class,
 222                                     PROP_DICTIONARY,
 223                                     "model");
 224
 225   g_object_class_install_property (object_class,
 226                                    PROP_PREDICATE,
 227                                    predicate_spec);
 228
 229   g_object_class_install_property (object_class,
 230                                    PROP_SELECTION_MODE,
 231                                    selection_mode_spec);
 232 }
 233
 234
 235 static void
 236 psppire_dict_view_base_init (PsppireDictViewClass *class)
 237 {
 238   GObjectClass *object_class = G_OBJECT_CLASS (class);
 239
 240   object_class->finalize = psppire_dict_view_finalize;
 241 }
 242
 243
 244
 245 static void
 246 psppire_dict_view_base_finalize (PsppireDictViewClass *class,
 247                                  gpointer class_data)
 248 {
 249
 250 }
 251
 252
 253 static void
 254 dv_get_base_model (GtkTreeModel *top_model, GtkTreeIter *top_iter,
 255                 GtkTreeModel **model, GtkTreeIter *iter)
 256 {
 257   *model = top_model;
 258
 259   if ( iter)
 260     *iter = *top_iter;
 261
 262   while ( ! PSPPIRE_IS_DICT (*model))
 263     {
 264       GtkTreeIter parent_iter;
 265       if (iter)
 266         parent_iter = *iter;
 267
 268       if ( GTK_IS_TREE_MODEL_FILTER (*model))
 269         {
 270           GtkTreeModelFilter *parent_model = GTK_TREE_MODEL_FILTER (*model);
 271
 272           *model = gtk_tree_model_filter_get_model (parent_model);
 273
 274           if (iter)
 275             gtk_tree_model_filter_convert_iter_to_child_iter (parent_model,
 276                                                               iter,
 277                                                               &parent_iter);
 278         }
 279       else if (GTK_IS_TREE_MODEL_SORT (*model))
 280         {
 281           GtkTreeModelSort *parent_model = GTK_TREE_MODEL_SORT (*model);
 282
 283           *model = gtk_tree_model_sort_get_model (parent_model);
 284
 285           if (iter)
 286             gtk_tree_model_sort_convert_iter_to_child_iter (parent_model,
 287                                                             iter,
 288                                                             &parent_iter);
 289         }
 290     }
 291 }
 292
 293
 294
 295 /* A GtkTreeCellDataFunc which renders the name and/or label of the
 296    variable */
 297 static void
 298 var_description_cell_data_func (GtkTreeViewColumn *col,
 299                                 GtkCellRenderer *cell,
 300                                 GtkTreeModel *top_model,
 301                                 GtkTreeIter *top_iter,
 302                                 gpointer data)
 303 {
 304   PsppireDictView *dv = PSPPIRE_DICT_VIEW (data);
 305   struct variable *var;
 306   GtkTreeIter iter;
 307   GtkTreeModel *model;
 308
 309   dv_get_base_model (top_model, top_iter, &model, &iter);
 310
 311   gtk_tree_model_get (model,
 312                       &iter, DICT_TVM_COL_VAR, &var, -1);
 313
 314   if ( var_has_label (var) && dv->prefer_labels)
 315     {
 316       gchar *text = g_markup_printf_escaped (
 317                                      "<span stretch=\"condensed\">%s</span>",
 318                                      var_get_label (var));
 319
 320       g_object_set (cell, "markup", text, NULL);
 321       g_free (text);
 322     }
 323   else
 324     {
 325       g_object_set (cell, "text", var_get_name (var), NULL);
 326     }
 327 }
 328
 329
 330
 331 /* A GtkTreeCellDataFunc which sets the icon appropriate to the type
 332    of variable */
 333 static void
 334 var_icon_cell_data_func (GtkTreeViewColumn *col,
 335                        GtkCellRenderer *cell,
 336                        GtkTreeModel *model,
 337                        GtkTreeIter *iter,
 338                        gpointer data)
 339 {
 340   struct variable *var;
 341   gtk_tree_model_get (model, iter, DICT_TVM_COL_VAR, &var, -1);
 342
 343   if ( var_is_alpha (var))
 344     {
 345       g_object_set (cell, "stock-id", "var-string", NULL);
 346     }
 347   else
 348     {
 349       const struct fmt_spec *fs = var_get_print_format (var);
 350       int cat = fmt_get_category (fs->type);
 351       switch ( var_get_measure (var))
 352         {
 353         case MEASURE_NOMINAL:
 354           g_object_set (cell, "stock-id", "var-nominal", NULL);
 355           break;
 356         case MEASURE_ORDINAL:
 357           g_object_set (cell, "stock-id", "var-ordinal", NULL);
 358           break;
 359         case MEASURE_SCALE:
 360           if ( ( FMT_CAT_DATE | FMT_CAT_TIME ) & cat )
 361             g_object_set (cell, "stock-id", "var-date-scale", NULL);
 362           else
 363             g_object_set (cell, "stock-id", "var-scale", NULL);
 364           break;
 365         default:
 366           g_assert_not_reached ();
 367         };
 368     }
 369 }
 370
 371
 372 /* Sets the tooltip to be the name of the variable under the cursor */
 373 static gboolean
 374 set_tooltip_for_variable (GtkTreeView  *treeview,
 375                           gint        x,
 376                           gint        y,
 377                           gboolean    keyboard_mode,
 378                           GtkTooltip *tooltip,
 379                           gpointer    user_data)
 380 {
 381   gint bx, by;
 382   GtkTreeIter iter;
 383   GtkTreePath *path;
 384   GtkTreeModel *tree_model;
 385   struct variable *var = NULL;
 386   gboolean ok;
 387
 388   gtk_tree_view_convert_widget_to_bin_window_coords (treeview,
 389                                                      x, y, &bx, &by);
 390
 391   if (!gtk_tree_view_get_path_at_pos (treeview, bx, by,
 392                                       &path, NULL, NULL, NULL))
 393     return FALSE;
 394
 395   tree_model = gtk_tree_view_get_model (treeview);
 396
 397   gtk_tree_view_set_tooltip_row (treeview, tooltip, path);
 398
 399   ok = gtk_tree_model_get_iter (tree_model, &iter, path);
 400
 401   gtk_tree_path_free (path);
 402   if (!ok)
 403     return FALSE;
 404
 405
 406   gtk_tree_model_get (tree_model, &iter, DICT_TVM_COL_VAR,  &var, -1);
 407
 408   if ( ! var_has_label (var))
 409     return FALSE;
 410
 411   {
 412     const gchar *tip ;
 413     GtkTreeModel *m;
 414
 415     dv_get_base_model (tree_model, NULL, &m, NULL);
 416
 417     if ( PSPPIRE_DICT_VIEW (treeview)->prefer_labels )
 418       tip = var_get_name (var);
 419     else
 420       tip = var_get_label (var);
 421
 422     gtk_tooltip_set_text (tooltip, tip);
 423   }
 424
 425   return TRUE;
 426 }
 427
 428 static gboolean
 429 show_menu (PsppireDictView *dv, GdkEventButton *event, gpointer data)
 430 {
 431   if (event->button != 3)
 432     return FALSE;
 433
 434   gtk_menu_popup (GTK_MENU (dv->menu), NULL, NULL, NULL, NULL,
 435                   event->button, event->time);
 436
 437   return TRUE;
 438 }
 439
 440 static void
 441 toggle_label_preference (GtkCheckMenuItem *checkbox, gpointer data)
 442 {
 443   PsppireDictView *dv = PSPPIRE_DICT_VIEW (data);
 444
 445   dv->prefer_labels = gtk_check_menu_item_get_active (checkbox);
 446
 447   gtk_widget_queue_draw (GTK_WIDGET (dv));
 448 }
 449
 450
 451
 452 static void
 453 psppire_dict_view_init (PsppireDictView *dict_view)
 454 {
 455   GtkTreeViewColumn *col = gtk_tree_view_column_new ();
 456
 457   GtkCellRenderer *renderer = gtk_cell_renderer_pixbuf_new ();
 458
 459   dict_view->prefer_labels = TRUE;
 460
 461   psppire_conf_get_boolean (psppire_conf_new (),
 462                             G_OBJECT_TYPE_NAME (dict_view),
 463                             "prefer-labels",
 464                             &dict_view->prefer_labels);
 465
 466   gtk_tree_view_column_set_title (col, _("Variable"));
 467
 468   gtk_tree_view_column_pack_start (col, renderer, FALSE);
 469
 470   gtk_tree_view_column_set_cell_data_func (col, renderer,
 471                                            var_icon_cell_data_func,
 472                                            NULL, NULL);
 473
 474   renderer = gtk_cell_renderer_text_new ();
 475   gtk_tree_view_column_pack_start (col, renderer, TRUE);
 476   gtk_tree_view_column_set_cell_data_func (col, renderer,
 477                                            var_description_cell_data_func,
 478                                            dict_view, NULL);
 479
 480   g_object_set (renderer, "ellipsize-set", TRUE, NULL);
 481   g_object_set (renderer, "ellipsize", PANGO_ELLIPSIZE_MIDDLE, NULL);
 482
 483   gtk_tree_view_column_set_sizing (col, GTK_TREE_VIEW_COLUMN_FIXED);
 484
 485   /* FIXME: make this a value in terms of character widths */
 486   gtk_tree_view_column_set_min_width (col, 150);
 487
 488   gtk_tree_view_append_column (GTK_TREE_VIEW (dict_view), col);
 489
 490   g_object_set (dict_view,
 491                 "has-tooltip", TRUE,
 492                 "headers-visible", FALSE,
 493                 NULL);
 494
 495   g_signal_connect (dict_view, "query-tooltip",
 496                     G_CALLBACK (set_tooltip_for_variable), NULL);
 497
 498   dict_view->menu = gtk_menu_new ();
 499
 500
 501   {
 502     GtkWidget *checkbox =
 503       gtk_check_menu_item_new_with_label  (_("Prefer variable labels"));
 504
 505     gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (checkbox),
 506                                     dict_view->prefer_labels);
 507
 508     g_signal_connect (checkbox, "toggled",
 509                       G_CALLBACK (toggle_label_preference), dict_view);
 510
 511
 512     gtk_menu_shell_append (GTK_MENU_SHELL (dict_view->menu), checkbox);
 513
 514   }
 515
 516   gtk_widget_show_all (dict_view->menu);
 517
 518   g_signal_connect (dict_view, "button-press-event",
 519                     G_CALLBACK (show_menu), NULL);
 520 }
 521
 522
 523 GtkWidget*
 524 psppire_dict_view_new (void)
 525 {
 526   return GTK_WIDGET (g_object_new (psppire_dict_view_get_type (), NULL));
 527 }
 528
 529
 530
 531 struct variable *
 532 psppire_dict_view_get_selected_variable (PsppireDictView *treeview)
 533 {
 534   struct variable *var;
 535   GtkTreeModel *top_model;
 536   GtkTreeIter top_iter;
 537
 538   GtkTreeModel *model;
 539   GtkTreeIter iter;
 540
 541   GtkTreeSelection *selection =
 542     gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));
 543
 544   if (! gtk_tree_selection_get_selected (selection,
 545                                          &top_model, &top_iter))
 546     return NULL;
 547
 548   dv_get_base_model (top_model, &top_iter, &model, &iter);
 549
 550   g_assert (PSPPIRE_IS_DICT (model));
 551
 552   gtk_tree_model_get (model,
 553                       &iter, DICT_TVM_COL_VAR, &var, -1);
 554
 555   return var;
 556 }
 557
 558