src/ui/dialog/document-properties.cpp

   1 /** \file
   2  *
   3  * Document properties dialog, Gtkmm-style
   4  *
   5  * Authors:
   6  *   bulia byak <buliabyak@users.sf.net>
   7  *   Bryce W. Harrington <bryce@bryceharrington.org>
   8  *   Lauris Kaplinski <lauris@kaplinski.com>
   9  *   Jon Phillips <jon@rejon.org>
  10  *   Ralf Stephan <ralf@ark.in-berlin.de> (Gtkmm)
  11  *
  12  * Copyright (C) 2006-2007 Johan Engelen  <johan@shouraizou.nl>
  13  * Copyright (C) 2000 - 2005 Authors
  14  *
  15  * Released under GNU GPL.  Read the file 'COPYING' for more information
  16  */
  17
  18 #ifdef HAVE_CONFIG_H
  19 # include <config.h>
  20 #endif
  21
  22
  23
  24 #include <gtkmm.h>
  25 #include "ui/widget/color-picker.h"
  26 #include "ui/widget/scalar-unit.h"
  27
  28 #include "xml/node-event-vector.h"
  29 #include "helper/units.h"
  30 #include "prefs-utils.h"
  31
  32 #include "inkscape.h"
  33 #include "verbs.h"
  34 #include "document.h"
  35 #include "desktop-handles.h"
  36 #include "desktop.h"
  37 #include "sp-namedview.h"
  38
  39 #include "document-properties.h"
  40
  41 #include "display/canvas-grid.h"
  42
  43 using std::pair;
  44
  45 namespace Inkscape {
  46 namespace UI {
  47 namespace Dialog {
  48
  49 #define SPACE_SIZE_X 15
  50 #define SPACE_SIZE_Y 10
  51
  52 //===================================================
  53
  54 //---------------------------------------------------
  55
  56 static DocumentProperties *_instance = 0;
  57
  58 static void on_child_added(Inkscape::XML::Node *repr, Inkscape::XML::Node *child, Inkscape::XML::Node *ref, void * data);
  59 static void on_child_removed(Inkscape::XML::Node *repr, Inkscape::XML::Node *child, Inkscape::XML::Node *ref, void * data);
  60 static void on_repr_attr_changed (Inkscape::XML::Node *, gchar const *, gchar const *, gchar const *, bool, gpointer);
  61 static void on_doc_replaced (SPDesktop* dt, SPDocument* doc);
  62 static void on_activate_desktop (Inkscape::Application *, SPDesktop* dt, void*);
  63 static void on_deactivate_desktop (Inkscape::Application *, SPDesktop* dt, void*);
  64
  65 static Inkscape::XML::NodeEventVector const _repr_events = {
  66     on_child_added, /* child_added */
  67     on_child_removed, /* child_removed */
  68     on_repr_attr_changed,
  69     NULL, /* content_changed */
  70     NULL  /* order_changed */
  71 };
  72
  73
  74 DocumentProperties &
  75 DocumentProperties::getInstance()
  76 {
  77     if (_instance) return *_instance;
  78     _instance = new DocumentProperties();
  79     _instance->init();
  80     return *_instance;
  81 }
  82
  83 void
  84 DocumentProperties::destroy()
  85 {
  86     if (_instance)
  87     {
  88         delete _instance;
  89         _instance = 0;
  90     }
  91 }
  92
  93 DocumentProperties::DocumentProperties()
  94     : UI::Widget::Panel ("", "dialogs.documentoptions", SP_VERB_DIALOG_NAMEDVIEW),
  95       _page_page(1, 1), _page_guides(1, 1),
  96       _page_snap(1, 1), _page_snap_dtls(1, 1),
  97       _grids_label_crea("", Gtk::ALIGN_LEFT),
  98       _grids_button_new(_("_New"), _("Create new grid.")),
  99       _grids_button_remove(_("_Remove"), _("Remove selected grid.")),
 100       _grids_label_def("", Gtk::ALIGN_LEFT),
 101       _prefs_path("dialogs.documentoptions")
 102 {
 103     _tt.enable();
 104     _getContents()->set_spacing (4);
 105     _getContents()->pack_start(_notebook, true, true);
 106
 107     _notebook.append_page(_page_page,      _("Page"));
 108     _notebook.append_page(_page_guides,    _("Guides"));
 109     _notebook.append_page(_grids_vbox,     _("Grids"));
 110     _notebook.append_page(_page_snap,      _("Snap"));
 111     _notebook.append_page(_page_snap_dtls, _("Snap points"));
 112
 113     build_page();
 114     build_guides();
 115     build_gridspage();
 116     build_snap();
 117     build_snap_dtls();
 118
 119     _grids_button_new.signal_clicked().connect(sigc::mem_fun(*this, &DocumentProperties::onNewGrid));
 120     _grids_button_remove.signal_clicked().connect(sigc::mem_fun(*this, &DocumentProperties::onRemoveGrid));
 121 }
 122
 123 void
 124 DocumentProperties::init()
 125 {
 126     update();
 127
 128     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(SP_ACTIVE_DESKTOP));
 129     repr->addListener (&_repr_events, this);
 130     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(SP_ACTIVE_DESKTOP)->root);
 131     root->addListener (&_repr_events, this);
 132
 133     _doc_replaced_connection = SP_ACTIVE_DESKTOP->connectDocumentReplaced (sigc::ptr_fun (on_doc_replaced));
 134
 135     g_signal_connect(G_OBJECT(INKSCAPE), "activate_desktop",
 136                      G_CALLBACK(on_activate_desktop), 0);
 137
 138     g_signal_connect(G_OBJECT(INKSCAPE), "deactivate_desktop",
 139                      G_CALLBACK(on_deactivate_desktop), 0);
 140
 141     show_all_children();
 142     _grids_button_remove.hide();
 143 }
 144
 145 DocumentProperties::~DocumentProperties()
 146 {
 147     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(SP_ACTIVE_DESKTOP));
 148     repr->removeListenerByData (this);
 149     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(SP_ACTIVE_DESKTOP)->root);
 150     root->removeListenerByData (this);
 151     _doc_replaced_connection.disconnect();
 152 }
 153
 154 //========================================================================
 155
 156 /**
 157  * Helper function that attaches widgets in a 3xn table. The widgets come in an
 158  * array that has two entries per table row. The two entries code for four
 159  * possible cases: (0,0) means insert space in first column; (0, non-0) means
 160  * widget in columns 2-3; (non-0, 0) means label in columns 1-3; and
 161  * (non-0, non-0) means two widgets in columns 2 and 3.
 162 **/
 163 inline void
 164 attach_all(Gtk::Table &table, Gtk::Widget *const arr[], unsigned const n, int start = 0)
 165 {
 166     for (unsigned i = 0, r = start; i < n; i += 2)
 167     {
 168         if (arr[i] && arr[i+1])
 169         {
 170             table.attach(*arr[i],   1, 2, r, r+1,
 171                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 172             table.attach(*arr[i+1], 2, 3, r, r+1,
 173                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 174         }
 175         else
 176         {
 177             if (arr[i+1])
 178                 table.attach(*arr[i+1], 1, 3, r, r+1,
 179                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 180             else if (arr[i])
 181             {
 182                 Gtk::Label& label = reinterpret_cast<Gtk::Label&>(*arr[i]);
 183                 label.set_alignment (0.0);
 184                 table.attach (label, 0, 3, r, r+1,
 185                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 186             }
 187             else
 188             {
 189                 Gtk::HBox *space = manage (new Gtk::HBox);
 190                 space->set_size_request (SPACE_SIZE_X, SPACE_SIZE_Y);
 191                 table.attach (*space, 0, 1, r, r+1,
 192                       (Gtk::AttachOptions)0, (Gtk::AttachOptions)0,0,0);
 193             }
 194         }
 195         ++r;
 196     }
 197 }
 198
 199 void
 200 DocumentProperties::build_page()
 201 {
 202     _page_page.show();
 203
 204     _rcp_bg.init (_("Back_ground:"), _("Background color"), _("Color and transparency of the page background (also used for bitmap export)"),
 205                    "pagecolor", "inkscape:pageopacity", _wr);
 206     _rcb_canb.init (_("Show page _border"), _("If set, rectangular page border is shown"), "showborder", _wr, false);
 207     _rcb_bord.init (_("Border on _top of drawing"), _("If set, border is always on top of the drawing"), "borderlayer", _wr, false);
 208     _rcp_bord.init (_("Border _color:"), _("Page border color"),
 209                     _("Color of the page border"),
 210                     "bordercolor", "borderopacity", _wr);
 211     _rcb_shad.init (_("_Show border shadow"), _("If set, page border shows a shadow on its right and lower side"), "inkscape:showpageshadow", _wr, false);
 212     _rum_deflt.init (_("Default _units:"), "inkscape:document-units", _wr);
 213
 214     Gtk::Label* label_gen = manage (new Gtk::Label);
 215     label_gen->set_markup (_("<b>General</b>"));
 216     Gtk::Label* label_bor = manage (new Gtk::Label);
 217     label_bor->set_markup (_("<b>Border</b>"));
 218     Gtk::Label *label_for = manage (new Gtk::Label);
 219     label_for->set_markup (_("<b>Format</b>"));
 220     _page_sizer.init (_wr);
 221
 222     Gtk::Widget *const widget_array[] =
 223     {
 224         label_gen,         0,
 225         _rum_deflt._label, _rum_deflt._sel,
 226         _rcp_bg._label,    _rcp_bg._cp,
 227         0,                 0,
 228         label_for,         0,
 229         0,                 &_page_sizer,
 230         0,                 0,
 231         label_bor,         0,
 232         0,                 _rcb_canb._button,
 233         0,                 _rcb_bord._button,
 234         0,                 _rcb_shad._button,
 235         _rcp_bord._label,  _rcp_bord._cp,
 236     };
 237
 238     attach_all(_page_page.table(), widget_array, G_N_ELEMENTS(widget_array));
 239 }
 240
 241 void
 242 DocumentProperties::build_guides()
 243 {
 244     _page_guides.show();
 245
 246     _rcb_sgui.init (_("Show _guides"), _("Show or hide guides"), "showguides", _wr);
 247     _rcp_gui.init (_("Guide co_lor:"), _("Guideline color"),
 248                    _("Color of guidelines"), "guidecolor", "guideopacity", _wr);
 249     _rcp_hgui.init (_("_Highlight color:"), _("Highlighted guideline color"),
 250                     _("Color of a guideline when it is under mouse"),
 251                     "guidehicolor", "guidehiopacity", _wr);
 252
 253     _rcbsng.init (_("_Snap guides while dragging"),
 254                   _("While dragging a guide, snap to object nodes or bounding box corners ('Nodes' or 'Bounding box corners' must be enabled in the 'Snap' tab)"),
 255                   "inkscape:snap-guide", _wr);
 256
 257     Gtk::Label *label_gui = manage (new Gtk::Label);
 258     label_gui->set_markup (_("<b>Guides</b>"));
 259
 260     Gtk::Widget *const widget_array[] =
 261     {
 262         label_gui,       0,
 263         0,               _rcb_sgui._button,
 264         _rcp_gui._label, _rcp_gui._cp,
 265         _rcp_hgui._label, _rcp_hgui._cp,
 266         0,                  _rcbsng._button,
 267     };
 268
 269     attach_all(_page_guides.table(), widget_array, G_N_ELEMENTS(widget_array));
 270 }
 271
 272 void
 273 DocumentProperties::build_snap()
 274 {
 275     _page_snap.show();
 276         //General options
 277         _rcbsnbb.init (_("_Bounding box corners"),
 278                 _("Snap bounding box corners to grid lines, to guides, and to other bounding boxes (Snapping of bounding boxes is only available in the selector tool)"),
 279                 "inkscape:snap-bbox", _wr);
 280     _rcbsnn.init (_("_Nodes"),
 281                 _("Snap nodes to grid lines, to guides, to paths, and to other nodes"),
 282                 "inkscape:snap-nodes", _wr);
 283
 284     //Options for snapping to objects
 285     _rcbsnop.init (_("Snap to pat_hs"),
 286                 _("Snap nodes to object paths"),
 287                 "inkscape:object-paths", _wr);
 288     _rcbsnon.init (_("Snap to n_odes"),
 289                 _("Snap nodes and guides to object nodes"),
 290                 "inkscape:object-nodes", _wr);
 291     _rcbsnbbn.init (_("Snap to bounding box co_rners"),
 292                 _("Snap bounding box corners to other bounding box corners"),
 293                 "inkscape:bbox-nodes", _wr);
 294     _rcbsnbbp.init (_("Snap to bounding box _edges"),
 295                 _("Snap bounding box corners and guides to bounding box edges"),
 296                 "inkscape:bbox-paths", _wr);
 297
 298     _rsu_sno.init (_("Snap _distance"), _("Snap at any d_istance"),
 299                   _("Snapping distance, in screen pixels, for snapping to objects"),
 300                   _("If set, objects snap to the nearest object, regardless of distance"),
 301                   "objecttolerance", _wr);
 302
 303     //Options for snapping to grids
 304     _rsu_sn.init (_("Snap di_stance"), _("Snap at any dis_tance"),
 305                   _("Snapping distance, in screen pixels, for snapping to grid"),
 306                   _("If set, objects snap to the nearest grid line, regardless of distance"),
 307                   "gridtolerance", _wr);
 308
 309         //Options for snapping to guides
 310     _rsu_gusn.init (_("Snap dist_ance"), _("Snap at any distan_ce"),
 311                 _("Snapping distance, in screen pixels, for snapping to guides"),
 312                 _("If set, objects snap to the nearest guide, regardless of distance"),
 313                 "guidetolerance", _wr);
 314
 315     //Other options to locate here: e.g. visual snapping indicators on/off
 316
 317     std::list<Gtk::ToggleButton*> slaves;
 318     slaves.push_back(_rcbsnop._button);
 319     slaves.push_back(_rcbsnon._button);
 320     _rcbsnn.setSlaveButton(slaves);
 321
 322     slaves.clear();
 323     slaves.push_back(_rcbsnbbp._button);
 324     slaves.push_back(_rcbsnbbn._button);
 325     _rcbsnbb.setSlaveButton(slaves);
 326
 327     Gtk::Label *label_g = manage (new Gtk::Label);
 328     label_g->set_markup (_("<b>Snapping of</b>"));
 329     Gtk::Label *label_o = manage (new Gtk::Label);
 330     label_o->set_markup (_("<b>Snapping to objects</b>"));
 331     Gtk::Label *label_gr = manage (new Gtk::Label);
 332     label_gr->set_markup (_("<b>Snapping to grids</b>"));
 333     Gtk::Label *label_gu = manage (new Gtk::Label);
 334     label_gu->set_markup (_("<b>Snapping to guides</b>"));
 335     Gtk::Label *label_m = manage (new Gtk::Label);
 336     label_m->set_markup (_("<b>Miscellaneous</b>"));
 337
 338     Gtk::Widget *const array[] =
 339     {
 340         label_g,            0,
 341         0,                  _rcbsnn._button,
 342         0,                  _rcbsnbb._button,
 343         0,                                      0,
 344         0,                  0,
 345         0,                                      0,
 346         0,                                      0,
 347         label_o,            0,
 348         0,                                      _rcbsnop._button,
 349         0,                                      _rcbsnon._button,
 350         0,                  _rcbsnbbp._button,
 351         0,                  _rcbsnbbn._button,
 352         0,                  _rsu_sno._vbox,
 353         0,                                      0,
 354         label_gr,           0,
 355         0,                  _rsu_sn._vbox,
 356         0,                                      0,
 357         label_gu,               0,
 358         0,                      _rsu_gusn._vbox
 359     };
 360
 361     attach_all(_page_snap.table(), array, G_N_ELEMENTS(array));
 362  }
 363
 364 void
 365 DocumentProperties::build_snap_dtls()
 366 {
 367     _page_snap_dtls.show();
 368
 369         _rcbsigg.init (_("_Grid with guides"),
 370                 _("Snap to grid-guide intersections"),
 371                 "inkscape:snap-intersection-grid-guide", _wr);
 372
 373         _rcbsils.init (_("_Line segments"),
 374                 _("Snap to intersections of line segments ('snap to paths' must be enabled, see the previous tab)"),
 375                 "inkscape:snap-intersection-line-segments", _wr);
 376
 377     //Applies to both nodes and guides, but not to bboxes, that's why its located here
 378     _rcbic.init (_("_Include the object's rotation center"),
 379                 _("Also snap the rotation center of an object when snapping nodes or guides"),
 380                 "inkscape:snap-center", _wr);
 381
 382     //Other options to locate here: e.g. visual snapping indicators on/off
 383
 384     Gtk::Label *label_i= manage (new Gtk::Label);
 385     label_i->set_markup (_("<b>Snapping to intersections of</b>"));
 386     Gtk::Label *label_m = manage (new Gtk::Label);
 387     label_m->set_markup (_("<b>Miscellaneous</b>"));
 388
 389     Gtk::Widget *const array[] =
 390     {
 391         label_i,            0,
 392         0,                  _rcbsigg._button,
 393         0,                  _rcbsils._button,
 394         0,                  0,
 395         label_m,            0,
 396         0,                  _rcbic._button,
 397     };
 398
 399     attach_all(_page_snap_dtls.table(), array, G_N_ELEMENTS(array));
 400 }
 401
 402 /**
 403 * Called for _updating_ the dialog (e.g. when a new grid was manually added in XML)
 404 */
 405 void
 406 DocumentProperties::update_gridspage()
 407 {
 408     SPDesktop *dt = SP_ACTIVE_DESKTOP;
 409     SPNamedView *nv = sp_desktop_namedview(dt);
 410
 411     //remove all tabs
 412     while (_grids_notebook.get_current_page() != -1) {
 413         _grids_notebook.remove_page(-1);
 414     }
 415
 416     //add tabs
 417     bool grids_present = false;
 418     for (GSList const * l = nv->grids; l != NULL; l = l->next) {
 419         Inkscape::CanvasGrid * grid = (Inkscape::CanvasGrid*) l->data;
 420         _grids_notebook.append_page(grid->getWidget(), grid->repr->attribute("id"));
 421         grids_present = true;
 422     }
 423     _grids_notebook.show_all();
 424
 425     if (grids_present)
 426         _grids_button_remove.show();
 427     else
 428         _grids_button_remove.hide();
 429 }
 430
 431 /**
 432  * Build grid page of dialog.
 433  */
 434 void
 435 DocumentProperties::build_gridspage()
 436 {
 437     /// \todo FIXME: gray out snapping when grid is off.
 438     /// Dissenting view: you want snapping without grid.
 439
 440     SPDesktop *dt = SP_ACTIVE_DESKTOP;
 441     SPNamedView *nv = sp_desktop_namedview(dt);
 442
 443     _grids_label_crea.set_markup(_("<b>Creation</b>"));
 444     _grids_label_def.set_markup(_("<b>Defined grids</b>"));
 445     _grids_hbox_crea.pack_start(_grids_combo_gridtype, true, true);
 446     _grids_hbox_crea.pack_start(_grids_button_new, true, true);
 447
 448     for (gint t = 0; t <= GRID_MAXTYPENR; t++) {
 449         _grids_combo_gridtype.append_text( CanvasGrid::getName( (GridType) t ) );
 450     }
 451     _grids_combo_gridtype.set_active_text( CanvasGrid::getName(GRID_RECTANGULAR) );
 452
 453     for (GSList const * l = nv->grids; l != NULL; l = l->next) {
 454         Inkscape::CanvasGrid * grid = (Inkscape::CanvasGrid*) l->data;
 455         _grids_notebook.append_page(grid->getWidget(), grid->repr->attribute("id"));
 456     }
 457
 458     _grids_space.set_size_request (SPACE_SIZE_X, SPACE_SIZE_Y);
 459
 460     _grids_vbox.set_spacing(4);
 461     _grids_vbox.pack_start(_grids_label_crea, false, false);
 462     _grids_vbox.pack_start(_grids_hbox_crea, false, false);
 463     _grids_vbox.pack_start(_grids_space, false, false);
 464     _grids_vbox.pack_start(_grids_label_def, false, false);
 465     _grids_vbox.pack_start(_grids_notebook, false, false);
 466     _grids_vbox.pack_start(_grids_button_remove, false, false);
 467     _grids_button_remove.hide();
 468 }
 469
 470
 471
 472 /**
 473  * Update dialog widgets from desktop. Also call updateWidget routines of the grids.
 474  */
 475 void
 476 DocumentProperties::update()
 477 {
 478     if (_wr.isUpdating()) return;
 479
 480     SPDesktop *dt = SP_ACTIVE_DESKTOP;
 481     SPNamedView *nv = sp_desktop_namedview(dt);
 482
 483     _wr.setUpdating (true);
 484     set_sensitive (true);
 485
 486     //-----------------------------------------------------------page page
 487     _rcp_bg.setRgba32 (nv->pagecolor);
 488     _rcb_canb.setActive (nv->showborder);
 489     _rcb_bord.setActive (nv->borderlayer == SP_BORDER_LAYER_TOP);
 490     _rcp_bord.setRgba32 (nv->bordercolor);
 491     _rcb_shad.setActive (nv->showpageshadow);
 492
 493     if (nv->doc_units)
 494         _rum_deflt.setUnit (nv->doc_units);
 495
 496     double const doc_w_px = sp_document_width(sp_desktop_document(dt));
 497     double const doc_h_px = sp_document_height(sp_desktop_document(dt));
 498     _page_sizer.setDim (doc_w_px, doc_h_px);
 499
 500     //-----------------------------------------------------------guide
 501     _rcb_sgui.setActive (nv->showguides);
 502     _rcp_gui.setRgba32 (nv->guidecolor);
 503     _rcp_hgui.setRgba32 (nv->guidehicolor);
 504
 505     //-----------------------------------------------------------snap
 506
 507     _rcbsnbb.setActive (nv->snap_manager.getSnapModeBBox());
 508     _rcbsnn.setActive (nv->snap_manager.getSnapModeNode());
 509     _rcbsng.setActive (nv->snap_manager.getSnapModeGuide());
 510     _rcbic.setActive (nv->snap_manager.getIncludeItemCenter());
 511     _rcbsnop.setActive(nv->snap_manager.object.getSnapToItemPath());
 512     _rcbsnon.setActive(nv->snap_manager.object.getSnapToItemNode());
 513     _rcbsnbbp.setActive(nv->snap_manager.object.getSnapToBBoxPath());
 514     _rcbsnbbn.setActive(nv->snap_manager.object.getSnapToBBoxNode());
 515     _rsu_sno.setValue (nv->objecttolerance);
 516
 517     _rsu_sn.setValue (nv->gridtolerance);
 518
 519     _rsu_gusn.setValue (nv->guidetolerance);
 520
 521     //-----------------------------------------------------------grids page
 522
 523     update_gridspage();
 524
 525     _wr.setUpdating (false);
 526 }
 527
 528 //--------------------------------------------------------------------
 529
 530 void
 531 DocumentProperties::on_response (int id)
 532 {
 533     if (id == Gtk::RESPONSE_DELETE_EVENT || id == Gtk::RESPONSE_CLOSE)
 534     {
 535         _rcp_bg.closeWindow();
 536         _rcp_bord.closeWindow();
 537         _rcp_gui.closeWindow();
 538         _rcp_hgui.closeWindow();
 539     }
 540
 541     if (id == Gtk::RESPONSE_CLOSE)
 542         hide();
 543 }
 544
 545
 546
 547 static void
 548 on_child_added(Inkscape::XML::Node */*repr*/, Inkscape::XML::Node */*child*/, Inkscape::XML::Node */*ref*/, void * /*data*/)
 549 {
 550     if (!_instance)
 551         return;
 552
 553     _instance->update_gridspage();
 554 }
 555
 556 static void
 557 on_child_removed(Inkscape::XML::Node */*repr*/, Inkscape::XML::Node */*child*/, Inkscape::XML::Node */*ref*/, void * /*data*/)
 558 {
 559     if (!_instance)
 560         return;
 561
 562     _instance->update_gridspage();
 563 }
 564
 565
 566
 567 /**
 568  * Called when XML node attribute changed; updates dialog widgets.
 569  */
 570 static void
 571 on_repr_attr_changed (Inkscape::XML::Node *, gchar const *, gchar const *, gchar const *, bool, gpointer)
 572 {
 573     if (!_instance)
 574         return;
 575
 576     _instance->update();
 577 }
 578
 579 static void
 580 on_activate_desktop (Inkscape::Application *, SPDesktop* /*dt*/, void*)
 581 {
 582     if (!_instance)
 583         return;
 584
 585     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(SP_ACTIVE_DESKTOP));
 586     repr->addListener (&_repr_events, _instance);
 587     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(SP_ACTIVE_DESKTOP)->root);
 588     root->addListener (&_repr_events, _instance);
 589     _instance->_doc_replaced_connection = SP_ACTIVE_DESKTOP->connectDocumentReplaced (sigc::ptr_fun (on_doc_replaced));
 590     _instance->update();
 591 }
 592
 593 static void
 594 on_deactivate_desktop (Inkscape::Application *, SPDesktop* /*dt*/, void*)
 595 {
 596     if (!_instance)
 597         return;
 598
 599     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(SP_ACTIVE_DESKTOP));
 600     repr->removeListenerByData (_instance);
 601     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(SP_ACTIVE_DESKTOP)->root);
 602     root->removeListenerByData (_instance);
 603     _instance->_doc_replaced_connection.disconnect();
 604 }
 605
 606 static void
 607 on_doc_replaced (SPDesktop* dt, SPDocument* doc)
 608 {
 609     if (!_instance)
 610         return;
 611
 612     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(dt));
 613     repr->addListener (&_repr_events, _instance);
 614     Inkscape::XML::Node *root = SP_OBJECT_REPR(doc->root);
 615     root->addListener (&_repr_events, _instance);
 616     _instance->update();
 617 }
 618
 619
 620
 621
 622 /*########################################################################
 623 # BUTTON CLICK HANDLERS    (callbacks)
 624 ########################################################################*/
 625
 626 void
 627 DocumentProperties::onNewGrid()
 628 {
 629     SPDesktop *dt = SP_ACTIVE_DESKTOP;
 630     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(dt));
 631     SPDocument *doc = sp_desktop_document(dt);
 632
 633     Glib::ustring typestring = _grids_combo_gridtype.get_active_text();
 634     CanvasGrid::writeNewGridToRepr(repr, doc, CanvasGrid::getGridTypeFromName(typestring.c_str()));
 635 }
 636
 637
 638 void
 639 DocumentProperties::onRemoveGrid()
 640 {
 641     gint pagenum = _grids_notebook.get_current_page();
 642     if (pagenum == -1) // no pages
 643       return;
 644
 645     Gtk::Widget *page = _grids_notebook.get_nth_page(pagenum);
 646     if (!page) return;
 647
 648     Glib::ustring tabtext = _grids_notebook.get_tab_label_text(*page);
 649
 650     // find the grid with name tabtext (it's id) and delete that one.
 651     SPDesktop *dt = SP_ACTIVE_DESKTOP;
 652     SPNamedView *nv = sp_desktop_namedview(dt);
 653     Inkscape::CanvasGrid * found_grid = NULL;
 654     for (GSList const * l = nv->grids; l != NULL; l = l->next) {
 655         Inkscape::CanvasGrid * grid = (Inkscape::CanvasGrid*) l->data;
 656         gchar const *idtext = grid->repr->attribute("id");
 657         if ( !strcmp(tabtext.c_str(), idtext) ) {
 658             found_grid = grid;
 659             break; // break out of for-loop
 660         }
 661     }
 662     if (found_grid) {
 663         // delete the grid that corresponds with the selected tab
 664         // when the grid is deleted from SVG, the SPNamedview handler automatically deletes the object, so found_grid becomes an invalid pointer!
 665         found_grid->repr->parent()->removeChild(found_grid->repr);
 666         sp_document_done(sp_desktop_document(dt), SP_VERB_DIALOG_NAMEDVIEW, _("Remove grid"));
 667     }
 668 }
 669
 670
 671 } // namespace Dialog
 672 } // namespace UI
 673 } // namespace Inkscape
 674
 675 /*
 676   Local Variables:
 677   mode:c++
 678   c-file-style:"stroustrup"
 679   c-file-offsets:((innamespace . 0)(inline-open . 0))
 680   indent-tabs-mode:nilu
 681   fill-column:99
 682   End:
 683 */
 684 // vim: filetype=c++:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :