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) 2006-2008 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 #include "widgets/icon.h"
  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 #define INKSCAPE_ICON_GRID_XY     "grid_xy"
  53 #define INKSCAPE_ICON_GRID_AXONOM "grid_axonom"
  54
  55
  56 //===================================================
  57
  58 //---------------------------------------------------
  59
  60 static void on_child_added(Inkscape::XML::Node *repr, Inkscape::XML::Node *child, Inkscape::XML::Node *ref, void * data);
  61 static void on_child_removed(Inkscape::XML::Node *repr, Inkscape::XML::Node *child, Inkscape::XML::Node *ref, void * data);
  62 static void on_repr_attr_changed (Inkscape::XML::Node *, gchar const *, gchar const *, gchar const *, bool, gpointer);
  63
  64 static Inkscape::XML::NodeEventVector const _repr_events = {
  65     on_child_added, /* child_added */
  66     on_child_removed, /* child_removed */
  67     on_repr_attr_changed,
  68     NULL, /* content_changed */
  69     NULL  /* order_changed */
  70 };
  71
  72
  73 DocumentProperties &
  74 DocumentProperties::getInstance()
  75 {
  76     DocumentProperties &instance = *new DocumentProperties();
  77     instance.init();
  78
  79     return instance;
  80 }
  81
  82 DocumentProperties::DocumentProperties()
  83     : UI::Widget::Panel ("", "dialogs.documentoptions", SP_VERB_DIALOG_NAMEDVIEW),
  84       _page_page(1, 1), _page_guides(1, 1),
  85       _page_snap(1, 1), _page_snap_dtls(1, 1),
  86     //---------------------------------------------------------------
  87       _rcb_canb(_("Show page _border"), _("If set, rectangular page border is shown"), "showborder", _wr, false),
  88       _rcb_bord(_("Border on _top of drawing"), _("If set, border is always on top of the drawing"), "borderlayer", _wr, false),
  89       _rcb_shad(_("_Show border shadow"), _("If set, page border shows a shadow on its right and lower side"), "inkscape:showpageshadow", _wr, false),
  90       _rcp_bg(_("Back_ground:"), _("Background color"), _("Color and transparency of the page background (also used for bitmap export)"), "pagecolor", "inkscape:pageopacity", _wr),
  91       _rcp_bord(_("Border _color:"), _("Page border color"), _("Color of the page border"), "bordercolor", "borderopacity", _wr),
  92     //---------------------------------------------------------------
  93       //General snap options
  94       _rcb_sgui(_("Show _guides"), _("Show or hide guides"), "showguides", _wr),
  95       _rcbsng(_("_Snap guides while dragging"), _("While dragging a guide, snap to object nodes or bounding box corners ('Snap to nodes' or 'snap to bounding box corners' must be enabled in the 'Snap' tab; only a small part of the guide near the cursor will snap)"),
  96                   "inkscape:snap-guide", _wr),
  97       _rcp_gui(_("Guide co_lor:"), _("Guideline color"), _("Color of guidelines"), "guidecolor", "guideopacity", _wr),
  98       _rcp_hgui(_("_Highlight color:"), _("Highlighted guideline color"), _("Color of a guideline when it is under mouse"), "guidehicolor", "guidehiopacity", _wr),
  99     //---------------------------------------------------------------
 100       _rcbsg(_("_Enable snapping"), _("Toggle snapping on or off"), "inkscape:snap-global", _wr),
 101       _rcbsnbb(_("_Bounding box corners"), _("Only available in the selector tool: snap bounding box corners to guides, to grids, and to other bounding boxes (but not to nodes or paths)"),
 102                   "inkscape:snap-bbox", _wr),
 103       _rcbsnn(_("_Nodes"), _("Snap nodes (e.g. path nodes, special points in shapes, gradient handles, text base points, transformation origins, etc.) to guides, to grids, to paths and to other nodes"),
 104                 "inkscape:snap-nodes", _wr),
 105       //Options for snapping to objects
 106       _rcbsnop(_("Snap to path_s"), _("Snap nodes to object paths"), "inkscape:object-paths", _wr),
 107       _rcbsnon(_("Snap to n_odes"), _("Snap nodes and guides to object nodes"), "inkscape:object-nodes", _wr),
 108       _rcbsnbbp(_("Snap to bounding bo_x edges"), _("Snap bounding box corners and guides to bounding box edges"), "inkscape:bbox-paths", _wr),
 109       _rcbsnbbn(_("Snap to bounding box co_rners"), _("Snap bounding box corners to other bounding box corners"), "inkscape:bbox-nodes", _wr),
 110     //---------------------------------------------------------------
 111        //Applies to both nodes and guides, but not to bboxes, that's why its located here
 112       _rcbic( _("Rotation _center"), _("Consider the rotation center of an object when snapping"), "inkscape:snap-center", _wr),
 113       _rcbsigg(_("_Grid with guides"), _("Snap to grid-guide intersections"), "inkscape:snap-intersection-grid-guide", _wr),
 114       _rcbsils(_("_Line segments"), _("Snap to intersections of line segments ('snap to paths' must be enabled, see the previous tab)"),
 115                 "inkscape:snap-intersection-line-segments", _wr),
 116     //---------------------------------------------------------------
 117       _grids_label_crea("", Gtk::ALIGN_LEFT),
 118       _grids_button_new(_("_New"), _("Create new grid.")),
 119       _grids_button_remove(_("_Remove"), _("Remove selected grid.")),
 120       _grids_label_def("", Gtk::ALIGN_LEFT),
 121     //---------------------------------------------------------------
 122       _prefs_path("dialogs.documentoptions")
 123 {
 124     _tt.enable();
 125     _getContents()->set_spacing (4);
 126     _getContents()->pack_start(_notebook, true, true);
 127
 128     _notebook.append_page(_page_page,      _("Page"));
 129     _notebook.append_page(_page_guides,    _("Guides"));
 130     _notebook.append_page(_grids_vbox,     _("Grids"));
 131     _notebook.append_page(_page_snap,      _("Snap"));
 132     _notebook.append_page(_page_snap_dtls, _("Snap points"));
 133
 134     build_page();
 135     build_guides();
 136     build_gridspage();
 137     build_snap();
 138     build_snap_dtls();
 139
 140     _grids_button_new.signal_clicked().connect(sigc::mem_fun(*this, &DocumentProperties::onNewGrid));
 141     _grids_button_remove.signal_clicked().connect(sigc::mem_fun(*this, &DocumentProperties::onRemoveGrid));
 142
 143     signalDocumentReplaced().connect(sigc::mem_fun(*this, &DocumentProperties::_handleDocumentReplaced));
 144     signalActivateDesktop().connect(sigc::mem_fun(*this, &DocumentProperties::_handleActivateDesktop));
 145     signalDeactiveDesktop().connect(sigc::mem_fun(*this, &DocumentProperties::_handleDeactivateDesktop));
 146 }
 147
 148 void
 149 DocumentProperties::init()
 150 {
 151     update();
 152
 153     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(getDesktop()));
 154     repr->addListener (&_repr_events, this);
 155     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(getDesktop())->root);
 156     root->addListener (&_repr_events, this);
 157
 158     show_all_children();
 159     _grids_button_remove.hide();
 160 }
 161
 162 DocumentProperties::~DocumentProperties()
 163 {
 164     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(getDesktop()));
 165     repr->removeListenerByData (this);
 166     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(getDesktop())->root);
 167     root->removeListenerByData (this);
 168 }
 169
 170 //========================================================================
 171
 172 /**
 173  * Helper function that attaches widgets in a 3xn table. The widgets come in an
 174  * array that has two entries per table row. The two entries code for four
 175  * possible cases: (0,0) means insert space in first column; (0, non-0) means
 176  * widget in columns 2-3; (non-0, 0) means label in columns 1-3; and
 177  * (non-0, non-0) means two widgets in columns 2 and 3.
 178 **/
 179 inline void
 180 attach_all(Gtk::Table &table, Gtk::Widget *const arr[], unsigned const n, int start = 0)
 181 {
 182     for (unsigned i = 0, r = start; i < n; i += 2)
 183     {
 184         if (arr[i] && arr[i+1])
 185         {
 186             table.attach(*arr[i],   1, 2, r, r+1,
 187                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 188             table.attach(*arr[i+1], 2, 3, r, r+1,
 189                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 190         }
 191         else
 192         {
 193             if (arr[i+1])
 194                 table.attach(*arr[i+1], 1, 3, r, r+1,
 195                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 196             else if (arr[i])
 197             {
 198                 Gtk::Label& label = reinterpret_cast<Gtk::Label&>(*arr[i]);
 199                 label.set_alignment (0.0);
 200                 table.attach (label, 0, 3, r, r+1,
 201                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 202             }
 203             else
 204             {
 205                 Gtk::HBox *space = manage (new Gtk::HBox);
 206                 space->set_size_request (SPACE_SIZE_X, SPACE_SIZE_Y);
 207                 table.attach (*space, 0, 1, r, r+1,
 208                       (Gtk::AttachOptions)0, (Gtk::AttachOptions)0,0,0);
 209             }
 210         }
 211         ++r;
 212     }
 213 }
 214
 215 void
 216 DocumentProperties::build_page()
 217 {
 218     _page_page.show();
 219
 220     _rum_deflt.init (_("Default _units:"), "inkscape:document-units", _wr);
 221
 222     Gtk::Label* label_gen = manage (new Gtk::Label);
 223     label_gen->set_markup (_("<b>General</b>"));
 224     Gtk::Label* label_bor = manage (new Gtk::Label);
 225     label_bor->set_markup (_("<b>Border</b>"));
 226     Gtk::Label *label_for = manage (new Gtk::Label);
 227     label_for->set_markup (_("<b>Format</b>"));
 228     _page_sizer.init (_wr);
 229
 230     Gtk::Widget *const widget_array[] =
 231     {
 232         label_gen,         0,
 233         _rum_deflt._label, _rum_deflt._sel,
 234         _rcp_bg._label,    &_rcp_bg,
 235         0,                 0,
 236         label_for,         0,
 237         0,                 &_page_sizer,
 238         0,                 0,
 239         label_bor,         0,
 240         0,                 &_rcb_canb,
 241         0,                 &_rcb_bord,
 242         0,                 &_rcb_shad,
 243         _rcp_bord._label,  &_rcp_bord,
 244     };
 245
 246     attach_all(_page_page.table(), widget_array, G_N_ELEMENTS(widget_array));
 247 }
 248
 249 void
 250 DocumentProperties::build_guides()
 251 {
 252     _page_guides.show();
 253
 254     Gtk::Label *label_gui = manage (new Gtk::Label);
 255     label_gui->set_markup (_("<b>Guides</b>"));
 256
 257     Gtk::Widget *const widget_array[] =
 258     {
 259         label_gui,        0,
 260         0,                &_rcb_sgui,
 261         _rcp_gui._label,  &_rcp_gui,
 262         _rcp_hgui._label, &_rcp_hgui,
 263         0,                &_rcbsng,
 264     };
 265
 266     attach_all(_page_guides.table(), widget_array, G_N_ELEMENTS(widget_array));
 267 }
 268
 269 void
 270 DocumentProperties::build_snap()
 271 {
 272     _page_snap.show();
 273
 274     _rsu_sno.init (_("Snap _distance"), _("Snap only when _closer than:"),
 275                   _("Snapping distance, in screen pixels, for snapping to objects"),
 276                   _("If set, objects only snap to another object when it's within the range specified below"),
 277                   "objecttolerance", _wr);
 278
 279     //Options for snapping to grids
 280     _rsu_sn.init (_("Snap d_istance"), _("Snap only when c_loser than:"),
 281                   _("Snapping distance, in screen pixels, for snapping to grid"),
 282                   _("If set, objects only snap to a grid line when it's within the range specified below"),
 283                   "gridtolerance", _wr);
 284
 285         //Options for snapping to guides
 286     _rsu_gusn.init (_("Snap dist_ance"), _("Snap only when close_r than:"),
 287                 _("Snapping distance, in screen pixels, for snapping to guides"),
 288                 _("If set, objects only snap to a guide when it's within the range specified below"),
 289                 "guidetolerance", _wr);
 290
 291     //Other options to locate here: e.g. visual snapping indicators on/off
 292
 293     std::list<Gtk::ToggleButton*> slaves;
 294     slaves.push_back(&_rcbsnop);
 295     slaves.push_back(&_rcbsnon);
 296     _rcbsnn.setSlaveButton(slaves);
 297
 298     slaves.clear();
 299     slaves.push_back(&_rcbsnbbp);
 300     slaves.push_back(&_rcbsnbbn);
 301     _rcbsnbb.setSlaveButton(slaves);
 302
 303     slaves.clear();
 304     slaves.push_back(&_rcbsnn);
 305     slaves.push_back(&_rcbsnbb);
 306
 307     _rcbsg.setSlaveButton(slaves);
 308
 309     Gtk::Label *label_g = manage (new Gtk::Label);
 310     label_g->set_markup (_("<b>Snapping</b>"));
 311     Gtk::Label *label_w = manage (new Gtk::Label);
 312     label_w->set_markup (_("<b>What snaps</b>"));
 313     Gtk::Label *label_o = manage (new Gtk::Label);
 314     label_o->set_markup (_("<b>Snap to objects</b>"));
 315     Gtk::Label *label_gr = manage (new Gtk::Label);
 316     label_gr->set_markup (_("<b>Snap to grids</b>"));
 317     Gtk::Label *label_gu = manage (new Gtk::Label);
 318     label_gu->set_markup (_("<b>Snap to guides</b>"));
 319
 320     Gtk::Widget *const array[] =
 321     {
 322         label_g,            0,
 323         0,                  &_rcbsg,
 324         0,                  0,
 325         label_w,            0,
 326         0,                  &_rcbsnn,
 327         0,                  &_rcbsnbb,
 328         0,                                      0,
 329         label_o,            0,
 330         0,                  &_rcbsnop,
 331         0,                  &_rcbsnon,
 332         0,                  &_rcbsnbbp,
 333         0,                  &_rcbsnbbn,
 334         0,                  _rsu_sno._vbox,
 335         0,                                      0,
 336         label_gr,           0,
 337         0,                  _rsu_sn._vbox,
 338         0,                                      0,
 339         label_gu,               0,
 340         0,                      _rsu_gusn._vbox
 341     };
 342
 343     attach_all(_page_snap.table(), array, G_N_ELEMENTS(array));
 344  }
 345
 346 void
 347 DocumentProperties::build_snap_dtls()
 348 {
 349     _page_snap_dtls.show();
 350
 351     //Other options to locate here: e.g. visual snapping indicators on/off
 352
 353     Gtk::Label *label_i= manage (new Gtk::Label);
 354     label_i->set_markup (_("<b>Snapping to intersections of</b>"));
 355     Gtk::Label *label_m = manage (new Gtk::Label);
 356     label_m->set_markup (_("<b>Snapping to special nodes</b>"));
 357
 358     Gtk::Widget *const array[] =
 359     {
 360         label_i,            0,
 361         0,                  &_rcbsigg,
 362         0,                  &_rcbsils,
 363         0,                  0,
 364         label_m,            0,
 365         0,                  &_rcbic,
 366     };
 367
 368     attach_all(_page_snap_dtls.table(), array, G_N_ELEMENTS(array));
 369 }
 370
 371 /**
 372 * Called for _updating_ the dialog (e.g. when a new grid was manually added in XML)
 373 */
 374 void
 375 DocumentProperties::update_gridspage()
 376 {
 377     SPDesktop *dt = getDesktop();
 378     SPNamedView *nv = sp_desktop_namedview(dt);
 379
 380     //remove all tabs
 381     while (_grids_notebook.get_n_pages() != 0) {
 382         _grids_notebook.remove_page(-1); // this also deletes the page.
 383     }
 384
 385     //add tabs
 386     bool grids_present = false;
 387     for (GSList const * l = nv->grids; l != NULL; l = l->next) {
 388         Inkscape::CanvasGrid * grid = (Inkscape::CanvasGrid*) l->data;
 389         if (!grid->repr->attribute("id")) continue; // update_gridspage is called again when "id" is added
 390         Glib::ustring name(grid->repr->attribute("id"));
 391         const char *icon = NULL;
 392         switch (grid->getGridType()) {
 393             case GRID_RECTANGULAR:
 394                 icon = INKSCAPE_ICON_GRID_XY;
 395                 break;
 396             case GRID_AXONOMETRIC:
 397                 icon = INKSCAPE_ICON_GRID_AXONOM;
 398                 break;
 399             default:
 400                 break;
 401         }
 402         _grids_notebook.append_page(*grid->newWidget(), _createPageTabLabel(name, icon));
 403         grids_present = true;
 404     }
 405     _grids_notebook.show_all();
 406
 407     if (grids_present)
 408         _grids_button_remove.show();
 409     else
 410         _grids_button_remove.hide();
 411 }
 412
 413 /**
 414  * Build grid page of dialog.
 415  */
 416 void
 417 DocumentProperties::build_gridspage()
 418 {
 419     /// \todo FIXME: gray out snapping when grid is off.
 420     /// Dissenting view: you want snapping without grid.
 421
 422     SPDesktop *dt = getDesktop();
 423     SPNamedView *nv = sp_desktop_namedview(dt);
 424
 425     _grids_label_crea.set_markup(_("<b>Creation</b>"));
 426     _grids_label_def.set_markup(_("<b>Defined grids</b>"));
 427     _grids_hbox_crea.pack_start(_grids_combo_gridtype, true, true);
 428     _grids_hbox_crea.pack_start(_grids_button_new, true, true);
 429
 430     for (gint t = 0; t <= GRID_MAXTYPENR; t++) {
 431         _grids_combo_gridtype.append_text( CanvasGrid::getName( (GridType) t ) );
 432     }
 433     _grids_combo_gridtype.set_active_text( CanvasGrid::getName(GRID_RECTANGULAR) );
 434
 435     _grids_space.set_size_request (SPACE_SIZE_X, SPACE_SIZE_Y);
 436
 437     _grids_vbox.set_spacing(4);
 438     _grids_vbox.pack_start(_grids_label_crea, false, false);
 439     _grids_vbox.pack_start(_grids_hbox_crea, false, false);
 440     _grids_vbox.pack_start(_grids_space, false, false);
 441     _grids_vbox.pack_start(_grids_label_def, false, false);
 442     _grids_vbox.pack_start(_grids_notebook, false, false);
 443     _grids_vbox.pack_start(_grids_button_remove, false, false);
 444     _grids_button_remove.hide();
 445
 446     update_gridspage();
 447 }
 448
 449
 450
 451 /**
 452  * Update dialog widgets from desktop. Also call updateWidget routines of the grids.
 453  */
 454 void
 455 DocumentProperties::update()
 456 {
 457     if (_wr.isUpdating()) return;
 458
 459     SPDesktop *dt = getDesktop();
 460     SPNamedView *nv = sp_desktop_namedview(dt);
 461
 462     _wr.setUpdating (true);
 463     set_sensitive (true);
 464
 465     //-----------------------------------------------------------page page
 466     _rcp_bg.setRgba32 (nv->pagecolor);
 467     _rcb_canb.setActive (nv->showborder);
 468     _rcb_bord.setActive (nv->borderlayer == SP_BORDER_LAYER_TOP);
 469     _rcp_bord.setRgba32 (nv->bordercolor);
 470     _rcb_shad.setActive (nv->showpageshadow);
 471
 472     if (nv->doc_units)
 473         _rum_deflt.setUnit (nv->doc_units);
 474
 475     double const doc_w_px = sp_document_width(sp_desktop_document(dt));
 476     double const doc_h_px = sp_document_height(sp_desktop_document(dt));
 477     _page_sizer.setDim (doc_w_px, doc_h_px);
 478
 479     //-----------------------------------------------------------guide
 480     _rcb_sgui.setActive (nv->showguides);
 481     _rcp_gui.setRgba32 (nv->guidecolor);
 482     _rcp_hgui.setRgba32 (nv->guidehicolor);
 483
 484     //-----------------------------------------------------------snap
 485
 486     _rcbsnbb.setActive (nv->snap_manager.getSnapModeBBox());
 487     _rcbsnn.setActive (nv->snap_manager.getSnapModeNode());
 488     _rcbsng.setActive (nv->snap_manager.getSnapModeGuide());
 489     _rcbic.setActive (nv->snap_manager.getIncludeItemCenter());
 490     _rcbsigg.setActive (nv->snap_manager.getSnapIntersectionGG());
 491     _rcbsils.setActive (nv->snap_manager.getSnapIntersectionLS());
 492     _rcbsnop.setActive(nv->snap_manager.object.getSnapToItemPath());
 493     _rcbsnon.setActive(nv->snap_manager.object.getSnapToItemNode());
 494     _rcbsnbbp.setActive(nv->snap_manager.object.getSnapToBBoxPath());
 495     _rcbsnbbn.setActive(nv->snap_manager.object.getSnapToBBoxNode());
 496     _rsu_sno.setValue (nv->objecttolerance);
 497
 498     _rsu_sn.setValue (nv->gridtolerance);
 499
 500     _rsu_gusn.setValue (nv->guidetolerance);
 501
 502     _rcbsg.setActive (nv->snap_manager.getSnapEnabledGlobally());
 503
 504     //-----------------------------------------------------------grids page
 505
 506     update_gridspage();
 507
 508     _wr.setUpdating (false);
 509 }
 510
 511 // TODO: copied from fill-and-stroke.cpp factor out into new ui/widget file?
 512 Gtk::HBox&
 513 DocumentProperties::_createPageTabLabel(const Glib::ustring& label, const char *label_image)
 514 {
 515     Gtk::HBox *_tab_label_box = manage(new Gtk::HBox(false, 0));
 516     _tab_label_box->set_spacing(4);
 517     _tab_label_box->pack_start(*Glib::wrap(sp_icon_new(Inkscape::ICON_SIZE_DECORATION,
 518                                                        label_image)));
 519
 520     Gtk::Label *_tab_label = manage(new Gtk::Label(label, true));
 521     _tab_label_box->pack_start(*_tab_label);
 522     _tab_label_box->show_all();
 523
 524     return *_tab_label_box;
 525 }
 526
 527 //--------------------------------------------------------------------
 528
 529 void
 530 DocumentProperties::on_response (int id)
 531 {
 532     if (id == Gtk::RESPONSE_DELETE_EVENT || id == Gtk::RESPONSE_CLOSE)
 533     {
 534         _rcp_bg.closeWindow();
 535         _rcp_bord.closeWindow();
 536         _rcp_gui.closeWindow();
 537         _rcp_hgui.closeWindow();
 538     }
 539
 540     if (id == Gtk::RESPONSE_CLOSE)
 541         hide();
 542 }
 543
 544 void
 545 DocumentProperties::_handleDocumentReplaced(SPDesktop* desktop, SPDocument *document)
 546 {
 547     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(desktop));
 548     repr->addListener(&_repr_events, this);
 549     Inkscape::XML::Node *root = SP_OBJECT_REPR(document->root);
 550     root->addListener(&_repr_events, this);
 551     update();
 552 }
 553
 554 void
 555 DocumentProperties::_handleActivateDesktop(Inkscape::Application *, SPDesktop *desktop)
 556 {
 557     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(desktop));
 558     repr->addListener(&_repr_events, this);
 559     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(desktop)->root);
 560     root->addListener(&_repr_events, this);
 561     update();
 562 }
 563
 564 void
 565 DocumentProperties::_handleDeactivateDesktop(Inkscape::Application *, SPDesktop *desktop)
 566 {
 567     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(desktop));
 568     repr->removeListenerByData(this);
 569     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(desktop)->root);
 570     root->removeListenerByData(this);
 571 }
 572
 573 static void
 574 on_child_added(Inkscape::XML::Node */*repr*/, Inkscape::XML::Node */*child*/, Inkscape::XML::Node */*ref*/, void *data)
 575 {
 576     if (DocumentProperties *dialog = static_cast<DocumentProperties *>(data))
 577         dialog->update_gridspage();
 578 }
 579
 580 static void
 581 on_child_removed(Inkscape::XML::Node */*repr*/, Inkscape::XML::Node */*child*/, Inkscape::XML::Node */*ref*/, void *data)
 582 {
 583     if (DocumentProperties *dialog = static_cast<DocumentProperties *>(data))
 584         dialog->update_gridspage();
 585 }
 586
 587
 588
 589 /**
 590  * Called when XML node attribute changed; updates dialog widgets.
 591  */
 592 static void
 593 on_repr_attr_changed (Inkscape::XML::Node *, gchar const *, gchar const *, gchar const *, bool, gpointer data)
 594 {
 595     if (DocumentProperties *dialog = static_cast<DocumentProperties *>(data))
 596         dialog->update();
 597 }
 598
 599
 600 /*########################################################################
 601 # BUTTON CLICK HANDLERS    (callbacks)
 602 ########################################################################*/
 603
 604 void
 605 DocumentProperties::onNewGrid()
 606 {
 607     SPDesktop *dt = getDesktop();
 608     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(dt));
 609     SPDocument *doc = sp_desktop_document(dt);
 610
 611     Glib::ustring typestring = _grids_combo_gridtype.get_active_text();
 612     CanvasGrid::writeNewGridToRepr(repr, doc, CanvasGrid::getGridTypeFromName(typestring.c_str()));
 613
 614     // toggle grid showing to ON:
 615     dt->showGrids(true);
 616 }
 617
 618
 619 void
 620 DocumentProperties::onRemoveGrid()
 621 {
 622     gint pagenum = _grids_notebook.get_current_page();
 623     if (pagenum == -1) // no pages
 624       return;
 625
 626     SPDesktop *dt = getDesktop();
 627     SPNamedView *nv = sp_desktop_namedview(dt);
 628     Inkscape::CanvasGrid * found_grid = NULL;
 629     int i = 0;
 630     for (GSList const * l = nv->grids; l != NULL; l = l->next, i++) {  // not a very nice fix, but works.
 631         Inkscape::CanvasGrid * grid = (Inkscape::CanvasGrid*) l->data;
 632         if (pagenum == i) {
 633             found_grid = grid;
 634             break; // break out of for-loop
 635         }
 636     }
 637     if (found_grid) {
 638         // delete the grid that corresponds with the selected tab
 639         // when the grid is deleted from SVG, the SPNamedview handler automatically deletes the object, so found_grid becomes an invalid pointer!
 640         found_grid->repr->parent()->removeChild(found_grid->repr);
 641         sp_document_done(sp_desktop_document(dt), SP_VERB_DIALOG_NAMEDVIEW, _("Remove grid"));
 642     }
 643 }
 644
 645
 646 } // namespace Dialog
 647 } // namespace UI
 648 } // namespace Inkscape
 649
 650 /*
 651   Local Variables:
 652   mode:c++
 653   c-file-style:"stroustrup"
 654   c-file-offsets:((innamespace . 0)(inline-open . 0))
 655   indent-tabs-mode:nilu
 656   fill-column:99
 657   End:
 658 */
 659 // vim: filetype=c++:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :