app/sheets.c

   1 /* Dia -- a diagram creation/manipulation program
   2  * Copyright (C) 1998 Alexander Larsson
   3  *
   4  * sheets.c : a sheets and objects dialog
   5  * Copyright (C) 2002 M.C. Nelson
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program 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
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20  *
  21  */
  22
  23 #include <string.h>
  24
  25 #ifdef GNOME
  26 #include <gnome.h>
  27 #else
  28 #include <gtk/gtk.h>
  29 #endif
  30
  31 #include <gdk-pixbuf/gdk-pixbuf.h>
  32 #include <gmodule.h>
  33
  34 #include "../lib/plug-ins.h"
  35 #include "../lib/sheet.h"
  36 #include "../lib/message.h"
  37 #include "../lib/object.h"
  38 #include "../app/pixmaps/missing.xpm"
  39
  40 #include "interface.h"
  41 #include "sheets.h"
  42 #include "sheets_dialog.h"
  43 #include "gtkhwrapbox.h"
  44
  45 GtkWidget *sheets_dialog = NULL;
  46 GSList *sheets_mods_list = NULL;
  47 GtkTooltips *sheets_dialog_tooltips = NULL;
  48 static gpointer custom_type_symbol;
  49
  50 /* Given a SheetObject and a SheetMod, create a new SheetObjectMod
  51    and hook it into the 'objects' list in the SheetMod->sheet
  52
  53    NOTE: that the objects structure points to SheetObjectMod's and
  54         *not* SheetObject's */
  55
  56 SheetObjectMod *
  57 sheets_append_sheet_object_mod(SheetObject *so, SheetMod *sm)
  58 {
  59   SheetObjectMod *sheet_object_mod;
  60   DiaObjectType *ot;
  61
  62   sheet_object_mod = g_new(SheetObjectMod, 1);
  63   sheet_object_mod->sheet_object = *so;
  64   sheet_object_mod->mod = SHEET_OBJECT_MOD_NONE;
  65
  66   ot = object_get_type(so->object_type);
  67   g_assert(ot);
  68   if (ot->ops == ((DiaObjectType *)(custom_type_symbol))->ops)
  69     sheet_object_mod->type = OBJECT_TYPE_SVG;
  70   else
  71     sheet_object_mod->type = OBJECT_TYPE_PROGRAMMED;
  72
  73   sm->sheet.objects = g_slist_append(sm->sheet.objects, sheet_object_mod);
  74
  75   return sheet_object_mod;
  76 }
  77
  78 /* Given a Sheet, create a SheetMod wrapper for a list of SheetObjectMod's */
  79
  80 SheetMod *
  81 sheets_append_sheet_mods(Sheet *sheet)
  82 {
  83   SheetMod *sheet_mod;
  84   GSList *sheet_objects_list;
  85
  86   sheet_mod = g_new(SheetMod, 1);
  87   sheet_mod->sheet = *sheet;
  88   sheet_mod->type = SHEETMOD_TYPE_NORMAL;
  89   sheet_mod->mod = SHEETMOD_MOD_NONE;
  90   sheet_mod->sheet.objects = NULL;
  91
  92   for (sheet_objects_list = sheet->objects; sheet_objects_list;
  93        sheet_objects_list = g_slist_next(sheet_objects_list))
  94     sheets_append_sheet_object_mod(sheet_objects_list->data, sheet_mod);
  95
  96   sheets_mods_list = g_slist_append(sheets_mods_list, sheet_mod);
  97
  98   return sheet_mod;
  99 }
 100
 101 static gint
 102 menu_item_compare_labels(gconstpointer a, gconstpointer b)
 103 {
 104   GList *a_list;
 105   gchar *label;
 106
 107   a_list = gtk_container_children(GTK_CONTAINER(GTK_MENU_ITEM(a)));
 108   g_assert(g_list_length(a_list) == 1);
 109
 110   gtk_label_get(GTK_LABEL(a_list->data), &label);
 111   g_list_free(a_list);
 112
 113   if (!strcmp(label, (gchar *)b))
 114     return 0;
 115   else
 116     return 1;
 117 }
 118
 119 void
 120 sheets_optionmenu_create(GtkWidget *option_menu, GtkWidget *wrapbox,
 121                          gchar *sheet_name)
 122 {
 123   GtkWidget *optionmenu_menu;
 124   GSList *sheets_list;
 125   GList *menu_item_list;
 126
 127   /* Delete the contents, if any, of this optionemnu first */
 128
 129   optionmenu_menu = gtk_option_menu_get_menu(GTK_OPTION_MENU(option_menu));
 130   gtk_container_foreach(GTK_CONTAINER(optionmenu_menu),
 131                         (GtkCallback)gtk_widget_destroy, NULL);
 132
 133   if (!sheets_dialog_tooltips)
 134     sheets_dialog_tooltips = gtk_tooltips_new();
 135
 136   for (sheets_list = sheets_mods_list; sheets_list;
 137        sheets_list = g_slist_next(sheets_list))
 138   {
 139     SheetMod *sheet_mod;
 140     GtkWidget *menu_item;
 141     gchar *tip;
 142
 143     sheet_mod = sheets_list->data;
 144
 145     /* We don't display sheets which have been deleted prior to Apply */
 146
 147     if (sheet_mod->mod == SHEETMOD_MOD_DELETED)
 148       continue;
 149
 150     {
 151       menu_item = gtk_menu_item_new_with_label(gettext(sheet_mod->sheet.name));
 152
 153       gtk_menu_append(GTK_MENU(optionmenu_menu), menu_item);
 154
 155       if (sheet_mod->sheet.scope == SHEET_SCOPE_SYSTEM)
 156         tip = g_strdup_printf(_("%s\nSystem sheet"), sheet_mod->sheet.description);
 157       else
 158         tip = g_strdup_printf(_("%s\nUser sheet"), sheet_mod->sheet.description);
 159
 160       gtk_tooltips_set_tip(GTK_TOOLTIPS(sheets_dialog_tooltips), menu_item, tip,
 161                            NULL);
 162       g_free(tip);
 163     }
 164
 165     gtk_widget_show(menu_item);
 166
 167     gtk_object_set_data(GTK_OBJECT(menu_item), "wrapbox", wrapbox);
 168
 169     g_signal_connect(GTK_OBJECT(menu_item), "activate",
 170                      G_CALLBACK(on_sheets_dialog_optionmenu_activate),
 171                        (gpointer)sheet_mod);
 172   }
 173
 174   menu_item_list = gtk_container_children(GTK_CONTAINER(optionmenu_menu));
 175
 176   /* If we were passed a sheet_name, then make the optionmenu point to that
 177      name after creation */
 178
 179   if (sheet_name)
 180   {
 181     gint index = 0;
 182     GList *list;
 183
 184     list = g_list_find_custom(menu_item_list, sheet_name,
 185                               menu_item_compare_labels);
 186     if (list)
 187       index = g_list_position(menu_item_list, list);
 188     gtk_option_menu_set_history(GTK_OPTION_MENU(option_menu), index);
 189     gtk_menu_item_activate(GTK_MENU_ITEM(g_list_nth_data(menu_item_list,
 190                                                          index)));
 191   }
 192   else
 193   {
 194     gtk_option_menu_set_history(GTK_OPTION_MENU(option_menu), 0);
 195     gtk_menu_item_activate(GTK_MENU_ITEM(menu_item_list->data));
 196   }
 197
 198   g_list_free(menu_item_list);
 199 }
 200
 201 gboolean
 202 sheets_dialog_create(void)
 203 {
 204   GList *plugin_list;
 205   GSList *sheets_list;
 206   GtkWidget *option_menu;
 207   GtkWidget *sw;
 208   GtkWidget *wrapbox;
 209   gchar *sheet_left;
 210   gchar *sheet_right;
 211
 212   if (sheets_mods_list)
 213     {
 214       /* FIXME: not sure if I understood the data structure
 215          but simply leaking isn't acceptable ... --hb
 216        */
 217       g_slist_foreach(sheets_mods_list, (GFunc)g_free, NULL);
 218       g_slist_free(sheets_mods_list);
 219     }
 220   sheets_mods_list = NULL;
 221
 222   if (sheets_dialog == NULL)
 223   {
 224     sheets_dialog = create_sheets_main_dialog();
 225     /* Make sure to null our pointer when destroyed */
 226     g_signal_connect (GTK_OBJECT (sheets_dialog), "destroy",
 227                       G_CALLBACK (gtk_widget_destroyed),
 228                         &sheets_dialog);
 229     g_signal_connect (GTK_OBJECT (sheets_dialog), "destroy",
 230                       G_CALLBACK (gtk_widget_destroyed),
 231                         &sheets_dialog_tooltips);
 232
 233     sheet_left = NULL;
 234     sheet_right = NULL;
 235   }
 236   else
 237   {
 238     option_menu = lookup_widget(sheets_dialog, "optionmenu_left");
 239     sheet_left = gtk_object_get_data(GTK_OBJECT(option_menu),
 240                                      "active_sheet_name");
 241
 242     option_menu = lookup_widget(sheets_dialog, "optionmenu_right");
 243     sheet_right = gtk_object_get_data(GTK_OBJECT(option_menu),
 244                                       "active_sheet_name");
 245
 246     wrapbox = lookup_widget(sheets_dialog, "wrapbox_left");
 247     gtk_widget_destroy(wrapbox);
 248
 249     wrapbox = lookup_widget(sheets_dialog, "wrapbox_right");
 250     gtk_widget_destroy(wrapbox);
 251   }
 252
 253   if (custom_type_symbol == NULL)
 254   {
 255     /* This little bit identifies a custom object symbol so we can tell the
 256        difference later between a SVG shape and a Programmed shape */
 257
 258     custom_type_symbol = NULL;
 259     for (plugin_list = dia_list_plugins(); plugin_list != NULL;
 260          plugin_list = g_list_next(plugin_list))
 261     {
 262        PluginInfo *info = plugin_list->data;
 263
 264        custom_type_symbol = (gpointer)dia_plugin_get_symbol (info,
 265                                                              "custom_type");
 266        if (custom_type_symbol)
 267          break;
 268     }
 269   }
 270
 271   if (!custom_type_symbol)
 272   {
 273     message_warning (_("Can't get symbol 'custom_type' from any module.\n"
 274                        "Editing shapes is disabled."));
 275     return FALSE;
 276   }
 277
 278   for (sheets_list = get_sheets_list(); sheets_list;
 279        sheets_list = g_slist_next(sheets_list))
 280     sheets_append_sheet_mods(sheets_list->data);
 281
 282   sw = lookup_widget(sheets_dialog, "scrolledwindow_right");
 283   wrapbox = gtk_hwrap_box_new(FALSE);
 284   gtk_widget_ref(wrapbox);
 285   gtk_object_set_data(GTK_OBJECT(sheets_dialog), "wrapbox_right", wrapbox);
 286   gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw), wrapbox);
 287   gtk_wrap_box_set_justify(GTK_WRAP_BOX(wrapbox), GTK_JUSTIFY_TOP);
 288   gtk_wrap_box_set_line_justify(GTK_WRAP_BOX(wrapbox), GTK_JUSTIFY_LEFT);
 289   gtk_widget_show(wrapbox);
 290   gtk_object_set_data(GTK_OBJECT(wrapbox), "is_left", FALSE);
 291   option_menu = lookup_widget(sheets_dialog, "optionmenu_right");
 292   sheets_optionmenu_create(option_menu, wrapbox, sheet_right);
 293
 294   sw = lookup_widget(sheets_dialog, "scrolledwindow_left");
 295   wrapbox = gtk_hwrap_box_new(FALSE);
 296   gtk_widget_ref(wrapbox);
 297   gtk_object_set_data(GTK_OBJECT(sheets_dialog), "wrapbox_left", wrapbox);
 298   gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(sw), wrapbox);
 299   gtk_wrap_box_set_justify(GTK_WRAP_BOX(wrapbox), GTK_JUSTIFY_TOP);
 300   gtk_wrap_box_set_line_justify(GTK_WRAP_BOX(wrapbox), GTK_JUSTIFY_LEFT);
 301   gtk_widget_show(wrapbox);
 302   gtk_object_set_data(GTK_OBJECT(wrapbox), "is_left", (gpointer)TRUE);
 303   option_menu = lookup_widget(sheets_dialog, "optionmenu_left");
 304   sheets_optionmenu_create(option_menu, wrapbox, sheet_left);
 305
 306   return TRUE;
 307 }
 308
 309 void
 310 create_object_pixmap(SheetObject *so, GtkWidget *parent,
 311                      GdkPixmap **pixmap, GdkBitmap **mask)
 312 {
 313   GtkStyle *style;
 314
 315   g_assert(so);
 316   g_assert(pixmap);
 317   g_assert(mask);
 318
 319   style = gtk_widget_get_style(parent);
 320
 321   if (so->pixmap != NULL)
 322   {
 323     *pixmap =
 324       gdk_pixmap_colormap_create_from_xpm_d(NULL,
 325                                             gtk_widget_get_colormap(parent),
 326                                             mask,
 327                                             &style->bg[GTK_STATE_NORMAL],
 328                                             so->pixmap);
 329   }
 330   else
 331   {
 332     if (so->pixmap_file != NULL)
 333     {
 334       GdkPixbuf *pixbuf;
 335       GError *error = NULL;
 336
 337       pixbuf = gdk_pixbuf_new_from_file(so->pixmap_file, &error);
 338       if (pixbuf != NULL)
 339       {
 340         gdk_pixbuf_render_pixmap_and_mask(pixbuf, pixmap, mask, 1.0);
 341         gdk_pixbuf_unref(pixbuf);
 342       } else {
 343         message_warning (error->message);
 344         g_error_free (error);
 345         *pixmap = gdk_pixmap_colormap_create_from_xpm_d
 346           (NULL,
 347            gtk_widget_get_colormap(parent),
 348            mask,
 349            &style->bg[GTK_STATE_NORMAL],
 350            missing);
 351       }
 352     }
 353     else
 354     {
 355       *pixmap = NULL;
 356       *mask = NULL;
 357     }
 358   }
 359 }
 360
 361 GtkWidget*
 362 lookup_widget                          (GtkWidget       *widget,
 363                                         const gchar     *widget_name)
 364 {
 365   GtkWidget *parent, *found_widget;
 366
 367   for (;;)
 368     {
 369       if (GTK_IS_MENU (widget))
 370         parent = gtk_menu_get_attach_widget (GTK_MENU (widget));
 371       else
 372         parent = widget->parent;
 373       if (parent == NULL)
 374         break;
 375       widget = parent;
 376     }
 377
 378   found_widget = (GtkWidget*) gtk_object_get_data (GTK_OBJECT (widget),
 379                                                    widget_name);
 380   if (!found_widget)
 381     g_warning (_("Widget not found: %s"), widget_name);
 382   return found_widget;
 383 }
 384
 385 #include "pixmaps/n_a.xpm"
 386 #include "pixmaps/line_break.xpm"
 387
 388 /* This is only called by the code written by glade and at the moment
 389    it is only used to create the static pixmap of the current sheet object. */
 390
 391 GtkWidget *
 392 create_pixmap(GtkWidget *dialog, gchar *filename, gboolean arg3)
 393 {
 394   GdkPixmap *pixmap, *mask;
 395   GtkWidget *button;
 396   GtkWidget *wrapbox;
 397   GList *button_list;
 398   SheetObjectMod *som;
 399
 400   button = sheets_dialog_get_active_button(&wrapbox, &button_list);
 401   som = gtk_object_get_data(GTK_OBJECT(button), "sheet_object_mod");
 402
 403   if (som)
 404     create_object_pixmap(&som->sheet_object, wrapbox, &pixmap, &mask);
 405   else
 406   {
 407     GtkStyle *style;
 408     gchar **icon;
 409
 410     style = gtk_widget_get_style(wrapbox);
 411
 412     if ((gboolean)gtk_object_get_data(GTK_OBJECT(button), "is_hidden_button")
 413         == TRUE)
 414       icon = n_a_xpm;
 415     else
 416       icon = line_break_xpm;
 417
 418     pixmap =
 419          gdk_pixmap_colormap_create_from_xpm_d(NULL,
 420                                                gtk_widget_get_colormap(wrapbox),
 421                                                &mask,
 422                                                &style->bg[GTK_STATE_NORMAL],
 423                                                icon);
 424   }
 425
 426   return gtk_pixmap_new(pixmap, mask);
 427 }
 428
 429 /* The menu calls us here, after we've been instantiated */
 430
 431 void
 432 sheets_dialog_show_callback(gpointer data, guint action, GtkWidget *widget)
 433 {
 434   GtkWidget *wrapbox;
 435   GtkWidget *option_menu;
 436
 437   if (!sheets_dialog)
 438     sheets_dialog_create();
 439   if (!sheets_dialog)
 440     return;
 441
 442   wrapbox = gtk_object_get_data(GTK_OBJECT(sheets_dialog), "wrapbox_left");
 443   option_menu = lookup_widget(sheets_dialog, "optionmenu_left");
 444   sheets_optionmenu_create(option_menu, wrapbox, interface_current_sheet_name);
 445
 446   g_assert(GTK_IS_WIDGET(sheets_dialog));
 447   gtk_widget_show(sheets_dialog);
 448 }
 449
 450 gchar *
 451 sheet_object_mod_get_type_string(SheetObjectMod *som)
 452 {
 453   switch (som->type)
 454   {
 455   case OBJECT_TYPE_SVG:
 456     return _("SVG Shape");
 457   case OBJECT_TYPE_PROGRAMMED:
 458     return _("Programmed DiaObject");
 459   default:
 460     g_assert_not_reached();
 461     return "";
 462   }
 463 }
 464