src/sheet-object-component.c

   1 /* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * sheet-object-component.c
   4  *
   5  * Copyright (C) 2008 Jean Bréfort <jean.brefort@normalesup.org>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of the
  10  * License, or (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, see <https://www.gnu.org/licenses/>
  19  */
  20
  21 #include <gnumeric-config.h>
  22 #include "gnumeric.h"
  23 #include "application.h"
  24 #include "commands.h"
  25 #include "gnm-pane-impl.h"
  26 #include "gui-util.h"
  27 #include "sheet-control-gui.h"
  28 #include "sheet-object-component.h"
  29 #include "sheet-object-impl.h"
  30 #include "wbc-gtk.h"
  31 #include <goffice/goffice.h>
  32 #include <goffice/component/go-component.h>
  33 #include <gsf/gsf-impl-utils.h>
  34 #include <gsf/gsf-output-gio.h>
  35 #include <glib/gi18n-lib.h>
  36
  37
  38 static void
  39 so_component_view_set_bounds (SheetObjectView *sov, double const *coords, gboolean visible)
  40 {
  41         GocItem *view = GOC_ITEM (GOC_GROUP (sov)->children->data);
  42         double scale = goc_canvas_get_pixels_per_unit (view->canvas);
  43
  44         if (visible) {
  45                 GOComponent *component = sheet_object_component_get_component (sheet_object_view_get_so (sov));
  46                 double width, height;
  47                 goc_item_set (GOC_ITEM (sov),
  48                         "x", MIN (coords [0], coords[2]) / scale,
  49                         "y", MIN (coords [3], coords[1]) / scale,
  50                         NULL);
  51                 if (component && ! go_component_is_resizable (component)) {
  52                         go_component_get_size (component, &width, &height);
  53
  54                         goc_item_set (view,
  55                                 "width", width * gnm_app_display_dpi_get (TRUE),
  56                                 "height", height * gnm_app_display_dpi_get (FALSE),
  57                                 NULL);
  58                 } else
  59                         goc_item_set (view,
  60                                 "width", (fabs (coords [2] - coords [0]) + 1.) / scale,
  61                                 "height", (fabs (coords [3] - coords [1]) + 1.) / scale,
  62                                 NULL);
  63
  64                 goc_item_show (view);
  65         } else
  66                 goc_item_hide (view);
  67 }
  68
  69 typedef SheetObjectView         SOComponentGocView;
  70 typedef SheetObjectViewClass    SOComponentGocViewClass;
  71
  72 static void
  73 so_component_goc_view_class_init (SheetObjectViewClass *sov_klass)
  74 {
  75         sov_klass->set_bounds   = so_component_view_set_bounds;
  76 }
  77
  78 static GSF_CLASS (SOComponentGocView, so_component_goc_view,
  79         so_component_goc_view_class_init, NULL,
  80         GNM_SO_VIEW_TYPE)
  81
  82
  83 /****************************************************************************/
  84 #define SHEET_OBJECT_CONFIG_KEY "sheet-object-component-key"
  85
  86 #define SHEET_OBJECT_COMPONENT_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), GNM_SO_COMPONENT_TYPE, SheetObjectComponentClass))
  87
  88 typedef struct {
  89         SheetObject  base;
  90         GOComponent     *component;
  91         guint changed_signal;
  92 } SheetObjectComponent;
  93 typedef SheetObjectClass SheetObjectComponentClass;
  94
  95 static GObjectClass *parent_klass;
  96
  97 static void
  98 gnm_soc_finalize (GObject *obj)
  99 {
 100         SheetObjectComponent *soc = GNM_SO_COMPONENT (obj);
 101
 102         g_object_unref (soc->component);
 103
 104         parent_klass->finalize (obj);
 105 }
 106
 107 static SheetObjectView *
 108 gnm_soc_new_view (SheetObject *so, SheetObjectViewContainer *container)
 109 {
 110         GnmPane *pane = GNM_PANE (container);
 111         SheetObjectComponent *soc = GNM_SO_COMPONENT (so);
 112         GocItem *view = goc_item_new (pane->object_views,
 113                 so_component_goc_view_get_type (),
 114                 NULL);
 115         goc_item_hide (goc_item_new (GOC_GROUP (view),
 116                       GOC_TYPE_COMPONENT,
 117                       "object", soc->component,
 118                       NULL));
 119         return gnm_pane_object_register (so, view, TRUE);
 120 }
 121
 122 static GtkTargetList *
 123 gnm_soc_get_target_list (SheetObject const *so)
 124 {
 125         GtkTargetList *tl = gtk_target_list_new (NULL, 0);
 126         char *mime_str = go_image_format_to_mime ("svg");
 127         GSList *mimes, *ptr;
 128
 129         mimes = go_strsplit_to_slist (mime_str, ',');
 130         for (ptr = mimes; ptr != NULL; ptr = ptr->next) {
 131                 const char *mime = ptr->data;
 132
 133                 if (mime != NULL && *mime != '\0')
 134                         gtk_target_list_add (tl, gdk_atom_intern (mime, FALSE),
 135                                              0, 0);
 136         }
 137         g_free (mime_str);
 138         g_slist_free_full (mimes, g_free);
 139         /* No need to eliminate duplicates. */
 140         gtk_target_list_add_image_targets (tl, 0, TRUE);
 141
 142         return tl;
 143 }
 144
 145 static GtkTargetList *
 146 gnm_soc_get_object_target_list (SheetObject const *so)
 147 {
 148         SheetObjectComponent *soc = GNM_SO_COMPONENT (so);
 149         GtkTargetList *tl = gtk_target_list_new (NULL, 0);
 150         if (soc && soc->component)
 151                 gtk_target_list_add (tl,
 152                         gdk_atom_intern (go_component_get_mime_type (soc->component), FALSE), 0, 0);
 153         return tl;
 154 }
 155
 156 static void
 157 gnm_soc_write_image (SheetObject const *so, char const *format, double resolution,
 158                      GsfOutput *output, GError **err)
 159 {
 160         SheetObjectComponent *soc = GNM_SO_COMPONENT (so);
 161         gboolean res = FALSE;
 162         double coords[4];
 163         double w, h;
 164
 165         if (so->sheet) {
 166                 sheet_object_position_pts_get (GNM_SO (so), coords);
 167                 w = fabs (coords[2] - coords[0]) + 1.;
 168                 h = fabs (coords[3] - coords[1]) + 1.;
 169         } else {
 170                 w = GPOINTER_TO_UINT
 171                         (g_object_get_data (G_OBJECT (so), "pt-width-at-copy"));
 172                 h = GPOINTER_TO_UINT
 173                         (g_object_get_data (G_OBJECT (so), "pt-height-at-copy"));
 174         }
 175
 176         g_return_if_fail (w > 0 && h > 0);
 177
 178         res = go_component_export_image (soc->component, go_image_get_format_from_name (format),
 179                                       output, resolution, resolution);
 180
 181         if (!res && err && *err == NULL)
 182                 *err = g_error_new (gsf_output_error_id (), 0,
 183                                     _("Unknown failure while saving image"));
 184 }
 185
 186 static void
 187 soc_cb_save_as (SheetObject *so, SheetControl *sc)
 188 {
 189         SheetObjectComponent *soc = GNM_SO_COMPONENT (so);
 190         /* FIXME: This violates model gui barrier */
 191         WBCGtk *wbcg = scg_wbcg (GNM_SCG (sc));
 192         GtkWidget *dlg = gtk_file_chooser_dialog_new (_("Save as"),
 193                                                       GTK_WINDOW (wbcg_toplevel (wbcg)),
 194                                                       GTK_FILE_CHOOSER_ACTION_SAVE,
 195                                                       GNM_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
 196                                                       GNM_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 197                                                       NULL);
 198         GtkFileFilter *filter = gtk_file_filter_new ();
 199         gtk_file_filter_add_mime_type (filter, go_component_get_mime_type (soc->component));
 200         gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dlg), filter);
 201         if (gtk_dialog_run (GTK_DIALOG (dlg)) == GTK_RESPONSE_ACCEPT) {
 202                 char *uri = gtk_file_chooser_get_uri (GTK_FILE_CHOOSER (dlg));
 203                 GError *err = NULL;
 204                 GsfOutput *output = gsf_output_gio_new_for_uri (uri, &err);
 205                 if (err != NULL)
 206                         go_cmd_context_error (GO_CMD_CONTEXT (wbcg), err);
 207                 else {
 208                         char *buf;
 209                         int length;
 210                         gpointer user_data = NULL;
 211                         void (*clearfunc) (gpointer) = NULL;
 212                         go_component_get_data (soc->component, (gpointer) &buf, &length, &clearfunc, &user_data);
 213                         gsf_output_write (output, length, buf);
 214                         if (clearfunc)
 215                                 clearfunc ((user_data)? user_data: buf);
 216                         gsf_output_close (output);
 217                         g_object_unref (output);
 218                 }
 219                 g_free (uri);
 220         }
 221         gtk_widget_destroy (dlg);
 222 }
 223
 224 static void
 225 soc_cb_save_as_image (SheetObject *so, SheetControl *sc)
 226 {
 227         WBCGtk *wbcg;
 228         char *uri;
 229         GError *err = NULL;
 230         GsfOutput *output;
 231         GSList *l;
 232         GOImageFormat selected_format;
 233         GOImageFormatInfo const *format_info;
 234         SheetObjectComponent *soc = GNM_SO_COMPONENT (so);
 235         double resolution;
 236
 237         g_return_if_fail (soc != NULL);
 238
 239         /* assuming that components support the same image formats than graphs */
 240         l = gog_graph_get_supported_image_formats ();
 241         g_return_if_fail (l != NULL);
 242         selected_format = GPOINTER_TO_UINT (l->data);
 243
 244         /* FIXME: This violates model gui barrier */
 245         wbcg = scg_wbcg (GNM_SCG (sc));
 246         uri = go_gui_get_image_save_info (wbcg_toplevel (wbcg), l, &selected_format, &resolution);
 247         if (!uri)
 248                 goto out;
 249         output = go_file_create (uri, &err);
 250         if (!output)
 251                 goto out;
 252         format_info = go_image_get_format_info (selected_format);
 253         sheet_object_write_image (so, format_info->name, resolution, output, &err);
 254         g_object_unref (output);
 255
 256         if (err != NULL)
 257                 go_cmd_context_error (GO_CMD_CONTEXT (wbcg), err);
 258
 259 out:
 260         g_free (uri);
 261         g_slist_free (l);
 262 }
 263
 264 static void
 265 gnm_soc_populate_menu (SheetObject *so, GPtrArray *actions)
 266 {
 267         static SheetObjectAction const soc_actions[] = {
 268                 { "document-save",    GNM_N_STOCK_SAVE, NULL, 0, soc_cb_save_as },
 269                 { "document-save-as", N_("_Save As Image"), NULL, 0, soc_cb_save_as_image }
 270         };
 271
 272         unsigned int i;
 273
 274         GNM_SO_CLASS (parent_klass)->populate_menu (so, actions);
 275
 276         for (i = 0; i < G_N_ELEMENTS (soc_actions); i++)
 277                 go_ptr_array_insert (actions, (gpointer) (soc_actions + i), 1 + i);
 278 }
 279
 280 static void
 281 gnm_soc_write_object (SheetObject const *so, char const *format,
 282                       GsfOutput *output, GError **err,
 283                       GnmConventions const *convs)
 284 {
 285         SheetObjectComponent *soc = GNM_SO_COMPONENT (so);
 286         char *buf;
 287         int length;
 288         gpointer user_data = NULL;
 289         void (*clearfunc) (gpointer) = NULL;
 290         go_component_get_data (soc->component, (gpointer) &buf, &length, &clearfunc, &user_data);
 291         gsf_output_write (output, length, buf);
 292         if (clearfunc)
 293                 clearfunc ((user_data)? user_data: buf);
 294 }
 295
 296 static void
 297 gnm_soc_write_xml_sax (SheetObject const *so, GsfXMLOut *output,
 298                        GnmConventions const *convs)
 299 {
 300         SheetObjectComponent const *soc = GNM_SO_COMPONENT (so);
 301         go_component_write_xml_sax (soc->component, output);
 302 }
 303
 304 static void
 305 soc_xml_finish (GOComponent *component, SheetObject *so)
 306 {
 307         sheet_object_component_set_component (so, component);
 308 }
 309
 310 static void
 311 gnm_soc_prep_sax_parser (SheetObject *so, GsfXMLIn *xin, xmlChar const **attrs,
 312                          GnmConventions const *convs)
 313 {
 314         go_component_sax_push_parser (xin, attrs,
 315                                     (GOComponentSaxHandler) soc_xml_finish, so);
 316 }
 317
 318 static void
 319 gnm_soc_copy (SheetObject *dst, SheetObject const *src)
 320 {
 321         SheetObjectComponent *soc = GNM_SO_COMPONENT (src);
 322         GOComponent *component = go_component_duplicate (soc->component);
 323         sheet_object_component_set_component (dst, component);
 324         g_object_unref (component);
 325 }
 326
 327 static void
 328 gnm_soc_default_size (SheetObject const *so, double *w, double *h)
 329 {
 330         SheetObjectComponent const *soc = GNM_SO_COMPONENT (so);
 331         if (soc->component && !go_component_is_resizable (soc->component)) {
 332                 go_component_get_size (soc->component, w, h);
 333                 *w = GO_IN_TO_PT (*w);
 334                 *h = GO_IN_TO_PT (*h);
 335         } else {
 336                 *w = GO_CM_TO_PT ((double)5);
 337                 *h = GO_CM_TO_PT ((double)5);
 338         }
 339 }
 340
 341 typedef struct {
 342         SheetObject *so;
 343         WorkbookControl *wbc;
 344         GOComponent *component;
 345         gulong signal;
 346 } gnm_soc_user_config_t;
 347
 348 static void
 349 component_changed_cb (GOComponent *component, gnm_soc_user_config_t *data)
 350 {
 351         SheetObjectComponent *soc = GNM_SO_COMPONENT (data->so);
 352         cmd_so_component_config (data->wbc, data->so, G_OBJECT (component), G_OBJECT (soc->component));
 353 }
 354
 355 static void
 356 destroy_cb ( gnm_soc_user_config_t *data)
 357 {
 358         wbcg_edit_finish (WBC_GTK (data->wbc), WBC_EDIT_REJECT, NULL);
 359         go_component_set_command_context (data->component, NULL);
 360         g_object_unref (data->component);
 361         g_free (data);
 362 }
 363
 364 static void
 365 gnm_soc_user_config (SheetObject *so, SheetControl *sc)
 366 {
 367         SheetObjectComponent *soc = GNM_SO_COMPONENT (so);
 368         GtkWidget *w;
 369         GOComponent *new_comp;
 370
 371         g_return_if_fail (soc && soc->component);
 372
 373         go_component_set_command_context (soc->component, GO_CMD_CONTEXT (scg_wbcg (GNM_SCG (sc))));
 374         new_comp = go_component_duplicate (soc->component);
 375         go_component_set_command_context (new_comp, GO_CMD_CONTEXT (scg_wbcg (GNM_SCG (sc))));
 376         w = (GtkWidget *) go_component_edit (new_comp);
 377         go_component_set_command_context (soc->component, NULL);
 378         if (w) {
 379                 gnm_soc_user_config_t *data = g_new0 (gnm_soc_user_config_t, 1);
 380                 data->so = so;
 381                 data->component = new_comp;
 382                 data->wbc = GNM_WBC (scg_wbcg (GNM_SCG (sc)));
 383                 data->signal = g_signal_connect (new_comp, "changed", G_CALLBACK (component_changed_cb), data);
 384                 g_object_set_data_full (G_OBJECT (w), "editor", data, (GDestroyNotify) destroy_cb);
 385                 wbc_gtk_attach_guru (scg_wbcg (GNM_SCG (sc)), w);
 386         }
 387 }
 388
 389 static void
 390 gnm_soc_draw_cairo (SheetObject const *so, cairo_t *cr,
 391                           double width, double height)
 392 {
 393         SheetObjectComponent *soc = GNM_SO_COMPONENT (so);
 394         g_return_if_fail (soc && soc->component);
 395
 396         go_component_render (soc->component, cr, width, height);
 397 }
 398
 399 static void
 400 gnm_soc_class_init (GObjectClass *klass)
 401 {
 402         SheetObjectClass        *so_class  = GNM_SO_CLASS (klass);
 403
 404         parent_klass = g_type_class_peek_parent (klass);
 405
 406         /* Object class method overrides */
 407         klass->finalize = gnm_soc_finalize;
 408
 409         /* SheetObject class method overrides */
 410         so_class->new_view              = gnm_soc_new_view;
 411         so_class->populate_menu         = gnm_soc_populate_menu;
 412         so_class->write_xml_sax         = gnm_soc_write_xml_sax;
 413         so_class->prep_sax_parser       = gnm_soc_prep_sax_parser;
 414         so_class->copy                  = gnm_soc_copy;
 415         so_class->user_config           = gnm_soc_user_config;
 416         so_class->default_size          = gnm_soc_default_size;
 417         so_class->draw_cairo            = gnm_soc_draw_cairo;
 418
 419         so_class->rubber_band_directly = FALSE;
 420 }
 421
 422 static void
 423 gnm_soc_init (GObject *obj)
 424 {
 425         SheetObject *so = GNM_SO (obj);
 426         so->anchor.base.direction = GOD_ANCHOR_DIR_DOWN_RIGHT;
 427 }
 428
 429 static void
 430 soc_imageable_init (SheetObjectImageableIface *soi_iface)
 431 {
 432         soi_iface->get_target_list = gnm_soc_get_target_list;
 433         soi_iface->write_image     = gnm_soc_write_image;
 434 }
 435
 436 static void
 437 soc_exportable_init (SheetObjectExportableIface *soe_iface)
 438 {
 439         soe_iface->get_target_list = gnm_soc_get_object_target_list;
 440         soe_iface->write_object    = gnm_soc_write_object;
 441 }
 442
 443 GSF_CLASS_FULL (SheetObjectComponent, sheet_object_component,
 444                 NULL, NULL, gnm_soc_class_init,NULL,
 445                 gnm_soc_init, GNM_SO_TYPE, 0,
 446                 GSF_INTERFACE (soc_imageable_init, GNM_SO_IMAGEABLE_TYPE) \
 447                 GSF_INTERFACE (soc_exportable_init, GNM_SO_EXPORTABLE_TYPE));
 448
 449 /**
 450  * sheet_object_component_new:
 451  * @component: #GOComponent
 452  *
 453  * Returns: (transfer full): the newly allocated #SheetObject.
 454  **/
 455 SheetObject *
 456 sheet_object_component_new (GOComponent *component)
 457 {
 458         SheetObjectComponent *soc = g_object_new (GNM_SO_COMPONENT_TYPE, NULL);
 459         sheet_object_component_set_component (GNM_SO (soc), component);
 460         return GNM_SO (soc);
 461 }
 462
 463 /**
 464  * sheet_object_component_get_component:
 465  * @soc: #SheetObject
 466  *
 467  * Returns: (transfer none): the embedded #GOComponent or %NULL on error.
 468  **/
 469 GOComponent*
 470 sheet_object_component_get_component (SheetObject *soc)
 471 {
 472         g_return_val_if_fail (GNM_IS_SO_COMPONENT (soc), NULL);
 473
 474         return ((SheetObjectComponent *) soc)->component;
 475 }
 476
 477 void
 478 sheet_object_component_set_component (SheetObject *so, GOComponent *component)
 479 {
 480         SheetObjectComponent *soc;
 481         GList *l = so->realized_list;
 482
 483         g_return_if_fail (GNM_IS_SO_COMPONENT (so));
 484         soc = GNM_SO_COMPONENT (so);
 485         if (soc->component != NULL) {
 486                 go_component_stop_editing (soc->component);
 487                 g_object_unref (soc->component);
 488         }
 489
 490         soc->component = component;
 491
 492         for (; l; l = l->next)
 493                 if (l->data) {
 494                         GocGroup *group = GOC_GROUP (l->data);
 495                         if (group->children->data)
 496                                 g_object_set (group->children->data, "object", component, NULL);
 497                 }
 498         if (component) {
 499                 g_object_ref (component);
 500                 go_component_stop_editing (component);
 501                 if (go_component_is_resizable (component))
 502                         so->flags |= SHEET_OBJECT_CAN_RESIZE;
 503                 else {
 504                         so->flags &= ~(SHEET_OBJECT_CAN_RESIZE | SHEET_OBJECT_SIZE_WITH_CELLS);
 505                         so->anchor.mode = GNM_SO_ANCHOR_ONE_CELL;
 506                 }
 507                 if (go_component_is_editable (component))
 508                         so->flags |= SHEET_OBJECT_CAN_EDIT;
 509                 else
 510                         so->flags &= ~SHEET_OBJECT_CAN_EDIT;
 511         }
 512
 513 }