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::create()
  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     : Dialog ("dialogs.documentoptions", SP_VERB_DIALOG_NAMEDVIEW),
  95       _page_page(1, 1), _page_grid(1, 1), _page_guides(1, 1),
  96       _page_snap(1, 1), _page_grids(1, 1),
  97       _grids_button_new(_("_New"), _("Create new grid.")),
  98       _grids_button_remove(_("_Remove"), _("Remove selected grid.")),
  99       _prefs_path("dialogs.documentoptions")
 100 {
 101     set_resizable (false);
 102     _tt.enable();
 103     get_vbox()->set_spacing (4);
 104     get_vbox()->pack_start (_notebook, true, true);
 105
 106     _notebook.append_page(_page_page,      _("Page"));
 107     _notebook.append_page(_page_grid,      _("Grid/Guides"));
 108     _notebook.append_page(_page_snap,      _("Snap"));
 109     _notebook.append_page(_page_grids,     _("Grids setup"));
 110
 111     build_page();
 112     build_grid();
 113     build_snap();
 114     build_gridspage();
 115
 116     _grids_button_new.signal_clicked().connect(sigc::mem_fun(*this, &DocumentProperties::onNewGrid));
 117     _grids_button_remove.signal_clicked().connect(sigc::mem_fun(*this, &DocumentProperties::onRemoveGrid));
 118 }
 119
 120 void
 121 DocumentProperties::init()
 122 {
 123     update();
 124
 125     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(SP_ACTIVE_DESKTOP));
 126     repr->addListener (&_repr_events, this);
 127     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(SP_ACTIVE_DESKTOP)->root);
 128     root->addListener (&_repr_events, this);
 129
 130     _doc_replaced_connection = SP_ACTIVE_DESKTOP->connectDocumentReplaced (sigc::ptr_fun (on_doc_replaced));
 131
 132     g_signal_connect(G_OBJECT(INKSCAPE), "activate_desktop",
 133                      G_CALLBACK(on_activate_desktop), 0);
 134
 135     g_signal_connect(G_OBJECT(INKSCAPE), "deactivate_desktop",
 136                      G_CALLBACK(on_deactivate_desktop), 0);
 137
 138     show_all_children();
 139
 140     present();
 141 }
 142
 143 DocumentProperties::~DocumentProperties()
 144 {
 145     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(SP_ACTIVE_DESKTOP));
 146     repr->removeListenerByData (this);
 147     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(SP_ACTIVE_DESKTOP)->root);
 148     root->removeListenerByData (this);
 149     _doc_replaced_connection.disconnect();
 150 }
 151
 152 //========================================================================
 153
 154 /**
 155  * Helper function that attachs widgets in a 3xn table. The widgets come in an
 156  * array that has two entries per table row. The two entries code for four
 157  * possible cases: (0,0) means insert space in first column; (0, non-0) means
 158  * widget in columns 2-3; (non-0, 0) means label in columns 1-3; and
 159  * (non-0, non-0) means two widgets in columns 2 and 3.
 160 **/
 161 inline void
 162 attach_all (Gtk::Table &table, const Gtk::Widget *arr[], unsigned size, int start = 0)
 163 {
 164     for (unsigned i=0, r=start; i<size/sizeof(Gtk::Widget*); i+=2)
 165     {
 166         if (arr[i] && arr[i+1])
 167         {
 168             table.attach (const_cast<Gtk::Widget&>(*arr[i]),   1, 2, r, r+1,
 169                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 170             table.attach (const_cast<Gtk::Widget&>(*arr[i+1]), 2, 3, r, r+1,
 171                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 172         }
 173         else
 174         {
 175             if (arr[i+1])
 176                 table.attach (const_cast<Gtk::Widget&>(*arr[i+1]), 1, 3, r, r+1,
 177                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 178             else if (arr[i])
 179             {
 180                 Gtk::Label& label = reinterpret_cast<Gtk::Label&> (const_cast<Gtk::Widget&>(*arr[i]));
 181                 label.set_alignment (0.0);
 182                 table.attach (label, 0, 3, r, r+1,
 183                       Gtk::FILL|Gtk::EXPAND, (Gtk::AttachOptions)0,0,0);
 184             }
 185             else
 186             {
 187                 Gtk::HBox *space = manage (new Gtk::HBox);
 188                 space->set_size_request (SPACE_SIZE_X, SPACE_SIZE_Y);
 189                 table.attach (*space, 0, 1, r, r+1,
 190                       (Gtk::AttachOptions)0, (Gtk::AttachOptions)0,0,0);
 191             }
 192         }
 193         ++r;
 194     }
 195 }
 196
 197 void
 198 DocumentProperties::build_page()
 199 {
 200     _page_page.show();
 201
 202     _rcp_bg.init (_("Back_ground:"), _("Background color"), _("Color and transparency of the page background (also used for bitmap export)"),
 203                    "pagecolor", "inkscape:pageopacity", _wr);
 204     _rcb_canb.init (_("Show page _border"), _("If set, rectangular page border is shown"), "showborder", _wr, false);
 205     _rcb_bord.init (_("Border on _top of drawing"), _("If set, border is always on top of the drawing"), "borderlayer", _wr, false);
 206     _rcp_bord.init (_("Border _color:"), _("Page border color"),
 207                     _("Color of the page border"),
 208                     "bordercolor", "borderopacity", _wr);
 209     _rcb_shad.init (_("_Show border shadow"), _("If set, page border shows a shadow on its right and lower side"), "inkscape:showpageshadow", _wr, false);
 210     _rum_deflt.init (_("Default _units:"), "inkscape:document-units", _wr);
 211
 212     Gtk::Label* label_gen = manage (new Gtk::Label);
 213     label_gen->set_markup (_("<b>General</b>"));
 214     Gtk::Label* label_bor = manage (new Gtk::Label);
 215     label_bor->set_markup (_("<b>Border</b>"));
 216     Gtk::Label *label_for = manage (new Gtk::Label);
 217     label_for->set_markup (_("<b>Format</b>"));
 218     _page_sizer.init (_wr);
 219
 220     const Gtk::Widget* widget_array[] =
 221     {
 222         label_gen,         0,
 223         _rum_deflt._label, _rum_deflt._sel,
 224         _rcp_bg._label,    _rcp_bg._cp,
 225         0,                 0,
 226         label_for,         0,
 227         0,                 &_page_sizer,
 228         0,                 0,
 229         label_bor,         0,
 230         0,                 _rcb_canb._button,
 231         0,                 _rcb_bord._button,
 232         0,                 _rcb_shad._button,
 233         _rcp_bord._label,  _rcp_bord._cp,
 234     };
 235
 236     attach_all (_page_page.table(), widget_array, sizeof(widget_array));
 237 }
 238
 239 void
 240 DocumentProperties::build_grid()
 241 {
 242     _page_grid.show();
 243
 244     /// \todo FIXME: gray out snapping when grid is off.
 245     /// Dissenting view: you want snapping without grid.
 246
 247     _rcbgrid.init (_("_Show grid"), _("Show or hide grid"), "showgrid", _wr);
 248
 249     _rumg.init (_("Grid _units:"), "grid_units", _wr);
 250     _rsu_ox.init (_("_Origin X:"), _("X coordinate of grid origin"),
 251                   "gridoriginx", _rumg, _wr);
 252     _rsu_oy.init (_("O_rigin Y:"), _("Y coordinate of grid origin"),
 253                   "gridoriginy", _rumg, _wr);
 254     _rsu_sx.init (_("Spacing _X:"), _("Distance between vertical grid lines"),
 255                   "gridspacingx", _rumg, _wr);
 256     _rsu_sy.init (_("Spacing _Y:"), _("Distance between horizontal grid lines"),
 257                   "gridspacingy", _rumg, _wr);
 258     _rcp_gcol.init (_("Grid line _color:"), _("Grid line color"),
 259                     _("Color of grid lines"), "gridcolor", "gridopacity", _wr);
 260     _rcp_gmcol.init (_("Ma_jor grid line color:"), _("Major grid line color"),
 261                      _("Color of the major (highlighted) grid lines"),
 262                      "gridempcolor", "gridempopacity", _wr);
 263     _rsi.init (_("_Major grid line every:"), _("lines"), "gridempspacing", _wr);
 264     _rcb_sgui.init (_("Show _guides"), _("Show or hide guides"), "showguides", _wr);
 265     _rcp_gui.init (_("Guide co_lor:"), _("Guideline color"),
 266                    _("Color of guidelines"), "guidecolor", "guideopacity", _wr);
 267     _rcp_hgui.init (_("_Highlight color:"), _("Highlighted guideline color"),
 268                     _("Color of a guideline when it is under mouse"),
 269                     "guidehicolor", "guidehiopacity", _wr);
 270     Gtk::Label *label_grid = manage (new Gtk::Label);
 271     label_grid->set_markup (_("<b>Grid</b>"));
 272     Gtk::Label *label_gui = manage (new Gtk::Label);
 273     label_gui->set_markup (_("<b>Guides</b>"));
 274
 275     const Gtk::Widget* widget_array[] =
 276     {
 277         label_grid,         0,
 278         0,                  _rcbgrid._button,
 279         _rumg._label,       _rumg._sel,
 280         0,                  _rsu_ox.getSU(),
 281         0,                  _rsu_oy.getSU(),
 282         0,                  _rsu_sx.getSU(),
 283         0,                  _rsu_sy.getSU(),
 284         _rcp_gcol._label,   _rcp_gcol._cp,
 285         0,                  0,
 286         _rcp_gmcol._label,  _rcp_gmcol._cp,
 287         _rsi._label,        &_rsi._hbox,
 288         0, 0,
 289         label_gui,       0,
 290         0,               _rcb_sgui._button,
 291         _rcp_gui._label, _rcp_gui._cp,
 292         _rcp_hgui._label, _rcp_hgui._cp,
 293     };
 294
 295     attach_all (_page_grid.table(), widget_array, sizeof(widget_array));
 296 }
 297
 298 void
 299 DocumentProperties::build_snap()
 300 {
 301     _page_snap.show();
 302
 303 /*  _rcbsnbo.init (_("_Snap bounding boxes to objects"),
 304                 _("Snap the edges of the object bounding boxes to other objects"),
 305                 "inkscape:object-bbox", _wr);
 306     _rcbsnnob.init (_("Snap nodes _to objects"),
 307                 _("Snap the nodes of objects to other objects"),
 308                 "inkscape:object-points", _wr);*/
 309     _rcbsnop.init (_("Snap to object _paths"),
 310                 _("Snap to other object paths"),
 311                 "inkscape:object-paths", _wr);
 312     _rcbsnon.init (_("Snap to object _nodes"),
 313                 _("Snap to other object nodes"),
 314                 "inkscape:object-nodes", _wr);
 315     _rsu_sno.init (_("Snap s_ensitivity:"), _("Always snap"),
 316                   _("Snapping distance, in screen pixels, for snapping to objects"),
 317                   _("If set, objects snap to the nearest object, regardless of distance"),
 318                   "objecttolerance", _wr);
 319 /*  _rcbsnbb.init (_("Snap _bounding boxes to grid"),
 320                 _("Snap the edges of the object bounding boxes"),
 321                 "inkscape:grid-bbox", _wr);
 322     _rcbsnnod.init (_("Snap nodes to _grid"),
 323                 _("Snap path nodes, text baselines, ellipse centers, etc."),
 324                 "inkscape:grid-points", _wr);*/
 325     _rsu_sn.init (_("Snap sens_itivity:"), _("Always snap"),
 326                   _("Snapping distance, in screen pixels, for snapping to grid"),
 327                   _("If set, objects snap to the nearest grid line, regardless of distance"),
 328                   "gridtolerance", _wr);
 329 /*  _rcb_snpgui.init (_("Snap bounding boxes to g_uides"),
 330                      _("Snap the edges of the object bounding boxes"),
 331                      "inkscape:guide-bbox", _wr);
 332     _rcb_snbgui.init (_("Snap p_oints to guides"),
 333                 _("Snap path nodes, text baselines, ellipse centers, etc."),
 334                 "inkscape:guide-points", _wr);*/
 335     _rsu_gusn.init (_("Snap sensiti_vity:"), _("Always snap"),
 336                 _("Snapping distance, in screen pixels, for snapping to guides"),
 337                 _("If set, objects snap to the nearest guide, regardless of distance"),
 338                 "guidetolerance", _wr);
 339     Gtk::Label *label_o = manage (new Gtk::Label);
 340     label_o->set_markup (_("<b>Object Snapping</b>"));
 341     Gtk::Label *label_gr = manage (new Gtk::Label);
 342     label_gr->set_markup (_("<b>Grid Snapping</b>"));
 343     Gtk::Label *label_gu = manage (new Gtk::Label);
 344     label_gu->set_markup (_("<b>Guide Snapping</b>"));
 345
 346     const Gtk::Widget* array[] =
 347     {
 348         label_o,            0,
 349 //      0,                  _rcbsnbo._button,
 350 //      0,                  _rcbsnnob._button,
 351         0,                  _rcbsnop._button,
 352         0,                  _rcbsnon._button,
 353         0,                  _rsu_sno._vbox,
 354         0, 0,
 355         label_gr,           0,
 356 //      0,                  _rcbsnbb._button,
 357 //      0,                  _rcbsnnod._button,
 358         0,                  _rsu_sn._vbox,
 359         0, 0,
 360         label_gu,         0,
 361 //      0,                _rcb_snpgui._button,
 362 //      0,                _rcb_snbgui._button,
 363         0,                _rsu_gusn._vbox,
 364     };
 365
 366     attach_all (_page_snap.table(), array, sizeof(array));
 367  }
 368
 369 /**
 370 * Called for _updating_ the dialog (e.g. when a new grid was manually added in XML)
 371 */
 372 void
 373 DocumentProperties::update_gridspage()
 374 {
 375     SPDesktop *dt = SP_ACTIVE_DESKTOP;
 376     SPNamedView *nv = sp_desktop_namedview(dt);
 377
 378     //remove all tabs
 379     while (_grids_notebook.get_current_page() != -1) {
 380         _grids_notebook.remove_page(-1);
 381     }
 382
 383     //add tabs
 384     for (GSList const * l = nv->grids; l != NULL; l = l->next) {
 385         Inkscape::CanvasGrid * grid = (Inkscape::CanvasGrid*) l->data;
 386         _grids_notebook.append_page(grid->getWidget(), grid->repr->attribute("id"));
 387
 388     }
 389     _grids_notebook.show_all();
 390
 391     _page_grids.table().resize_children();
 392 }
 393
 394 /**
 395  * Build grid page of dialog.
 396  */
 397 void
 398 DocumentProperties::build_gridspage()
 399 {
 400     _page_grids.show();
 401
 402     SPDesktop *dt = SP_ACTIVE_DESKTOP;
 403     SPNamedView *nv = sp_desktop_namedview(dt);
 404
 405     Gtk::Label* label_crea = manage (new Gtk::Label);
 406     label_crea->set_markup (_("<b>Creation</b>"));
 407     Gtk::Label* label_crea_type = manage (new Gtk::Label);
 408     label_crea_type->set_markup (_("Gridtype"));
 409
 410     _grids_combo_gridtype.append_text(Glib::ustring("xygrid"));
 411     _grids_combo_gridtype.append_text(Glib::ustring("axonometric"));
 412     _grids_combo_gridtype.set_active_text(Glib::ustring("xygrid"));
 413
 414     Gtk::Label* label_def = manage (new Gtk::Label);
 415     label_def->set_markup (_("<b>Defined grids</b>"));
 416
 417     for (GSList const * l = nv->grids; l != NULL; l = l->next) {
 418         Inkscape::CanvasGrid * grid = (Inkscape::CanvasGrid*) l->data;
 419         _grids_notebook.append_page(grid->getWidget(), grid->repr->attribute("id"));
 420     }
 421
 422     const Gtk::Widget* widget_array[] =
 423     {
 424         label_crea, 0,
 425         label_crea_type, (Gtk::Widget*) &_grids_combo_gridtype,
 426         (Gtk::Widget*) &_grids_button_new,         (Gtk::Widget*) &_grids_button_remove,
 427         label_def,         0,
 428         (Gtk::Widget*) &_grids_notebook, 0
 429     };
 430
 431     attach_all (_page_grids.table(), widget_array, sizeof(widget_array));
 432 }
 433
 434
 435
 436 /**
 437  * Update dialog widgets from desktop. Also call updateWidget routines of the grids.
 438  */
 439 void
 440 DocumentProperties::update()
 441 {
 442     if (_wr.isUpdating()) return;
 443
 444     SPDesktop *dt = SP_ACTIVE_DESKTOP;
 445     SPNamedView *nv = sp_desktop_namedview(dt);
 446
 447     _wr.setUpdating (true);
 448     set_sensitive (true);
 449
 450     //-----------------------------------------------------------page page
 451     _rcp_bg.setRgba32 (nv->pagecolor);
 452     _rcb_canb.setActive (nv->showborder);
 453     _rcb_bord.setActive (nv->borderlayer == SP_BORDER_LAYER_TOP);
 454     _rcp_bord.setRgba32 (nv->bordercolor);
 455     _rcb_shad.setActive (nv->showpageshadow);
 456
 457     if (nv->doc_units)
 458         _rum_deflt.setUnit (nv->doc_units);
 459
 460     double const doc_w_px = sp_document_width(sp_desktop_document(dt));
 461     double const doc_h_px = sp_document_height(sp_desktop_document(dt));
 462     _page_sizer.setDim (doc_w_px, doc_h_px);
 463
 464     //-----------------------------------------------------------grid page
 465     _rcbgrid.setActive (nv->showgrid);
 466     _rumg.setUnit (nv->gridunit);
 467
 468     gdouble val;
 469     val = nv->gridorigin[NR::X];
 470     val = sp_pixels_get_units (val, *(nv->gridunit));
 471     _rsu_ox.setValue (val);
 472     val = nv->gridorigin[NR::Y];
 473     val = sp_pixels_get_units (val, *(nv->gridunit));
 474     _rsu_oy.setValue (val);
 475     val = nv->gridspacing[NR::X];
 476     double gridx = sp_pixels_get_units (val, *(nv->gridunit));
 477     _rsu_sx.setValue (gridx);
 478     val = nv->gridspacing[NR::Y];
 479     double gridy = sp_pixels_get_units (val, *(nv->gridunit));
 480     _rsu_sy.setValue (gridy);
 481
 482     _rcp_gcol.setRgba32 (nv->gridcolor);
 483     _rcp_gmcol.setRgba32 (nv->gridempcolor);
 484     _rsi.setValue (nv->gridempspacing);
 485
 486     //-----------------------------------------------------------guide
 487     _rcb_sgui.setActive (nv->showguides);
 488     _rcp_gui.setRgba32 (nv->guidecolor);
 489     _rcp_hgui.setRgba32 (nv->guidehicolor);
 490
 491     //-----------------------------------------------------------snap
 492     //_rcbsnbo.setActive (nv->snap_manager.object.getSnapTo(Inkscape::Snapper::BBOX_POINT));
 493     //_rcbsnnob.setActive (nv->snap_manager.object.getSnapTo(Inkscape::Snapper::SNAP_POINT));
 494     _rcbsnop.setActive (nv->snap_manager.object.getSnapToPaths());
 495     _rcbsnon.setActive (nv->snap_manager.object.getSnapToNodes());
 496     _rsu_sno.setValue (nv->objecttolerance);
 497
 498     //_rcbsnbb.setActive (nv->snap_manager.grid.getSnapTo(Inkscape::Snapper::BBOX_POINT));
 499     //_rcbsnnod.setActive (nv->snap_manager.grid.getSnapTo(Inkscape::Snapper::SNAP_POINT));
 500     _rsu_sn.setValue (nv->gridtolerance);
 501
 502     //_rcb_snpgui.setActive (nv->snap_manager.guide.getSnapTo(Inkscape::Snapper::BBOX_POINT));
 503     //_rcb_snbgui.setActive (nv->snap_manager.guide.getSnapTo(Inkscape::Snapper::SNAP_POINT));
 504     _rsu_gusn.setValue (nv->guidetolerance);
 505
 506     //-----------------------------------------------------------grids page
 507
 508     update_gridspage();
 509
 510     _wr.setUpdating (false);
 511 }
 512
 513 //--------------------------------------------------------------------
 514
 515 void
 516 DocumentProperties::on_response (int id)
 517 {
 518     if (id == Gtk::RESPONSE_DELETE_EVENT || id == Gtk::RESPONSE_CLOSE)
 519     {
 520         _rcp_bg.closeWindow();
 521         _rcp_bord.closeWindow();
 522         _rcp_gcol.closeWindow();
 523         _rcp_gmcol.closeWindow();
 524         _rcp_gui.closeWindow();
 525         _rcp_hgui.closeWindow();
 526     }
 527
 528     if (id == Gtk::RESPONSE_CLOSE)
 529         hide();
 530 }
 531
 532
 533
 534 static void
 535 on_child_added(Inkscape::XML::Node *repr, Inkscape::XML::Node *child, Inkscape::XML::Node *ref, void * data)
 536 {
 537     if (!_instance)
 538         return;
 539
 540     _instance->update_gridspage();
 541 }
 542
 543 static void
 544 on_child_removed(Inkscape::XML::Node *repr, Inkscape::XML::Node *child, Inkscape::XML::Node *ref, void * data)
 545 {
 546     if (!_instance)
 547         return;
 548
 549     _instance->update_gridspage();
 550 }
 551
 552
 553
 554 /**
 555  * Called when XML node attribute changed; updates dialog widgets.
 556  */
 557 static void
 558 on_repr_attr_changed (Inkscape::XML::Node *, gchar const *, gchar const *, gchar const *, bool, gpointer)
 559 {
 560     if (!_instance)
 561         return;
 562
 563     _instance->update();
 564 }
 565
 566 static void
 567 on_activate_desktop (Inkscape::Application *, SPDesktop* dt, void*)
 568 {
 569     if (!_instance)
 570         return;
 571
 572     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(SP_ACTIVE_DESKTOP));
 573     repr->addListener (&_repr_events, _instance);
 574     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(SP_ACTIVE_DESKTOP)->root);
 575     root->addListener (&_repr_events, _instance);
 576     _instance->_doc_replaced_connection = SP_ACTIVE_DESKTOP->connectDocumentReplaced (sigc::ptr_fun (on_doc_replaced));
 577     _instance->update();
 578 }
 579
 580 static void
 581 on_deactivate_desktop (Inkscape::Application *, SPDesktop* dt, void*)
 582 {
 583     if (!_instance)
 584         return;
 585
 586     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(SP_ACTIVE_DESKTOP));
 587     repr->removeListenerByData (_instance);
 588     Inkscape::XML::Node *root = SP_OBJECT_REPR(sp_desktop_document(SP_ACTIVE_DESKTOP)->root);
 589     root->removeListenerByData (_instance);
 590     _instance->_doc_replaced_connection.disconnect();
 591 }
 592
 593 static void
 594 on_doc_replaced (SPDesktop* dt, SPDocument* doc)
 595 {
 596     if (!_instance)
 597         return;
 598
 599     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(dt));
 600     repr->addListener (&_repr_events, _instance);
 601     Inkscape::XML::Node *root = SP_OBJECT_REPR(doc->root);
 602     root->addListener (&_repr_events, _instance);
 603     _instance->update();
 604 }
 605
 606
 607
 608
 609 /*########################################################################
 610 # BUTTON CLICK HANDLERS    (callbacks)
 611 ########################################################################*/
 612
 613 void
 614 DocumentProperties::onNewGrid()
 615 {
 616     Inkscape::XML::Node *repr = SP_OBJECT_REPR(sp_desktop_namedview(SP_ACTIVE_DESKTOP));
 617
 618     Glib::ustring typestring = _grids_combo_gridtype.get_active_text();
 619     CanvasGrid::writeNewGridToRepr(repr, typestring.c_str());
 620 }
 621
 622
 623 void
 624 DocumentProperties::onRemoveGrid()
 625 {
 626     gint pagenum = _grids_notebook.get_current_page();
 627     if (pagenum == -1) // no pages
 628       return;
 629
 630     Gtk::Widget *page = _grids_notebook.get_nth_page(pagenum);
 631     if (!page) return;
 632
 633     Glib::ustring tabtext = _grids_notebook.get_tab_label_text(*page);
 634
 635     // find the grid with name tabtext (it's id) and delete that one.
 636     SPDesktop *dt = SP_ACTIVE_DESKTOP;
 637     SPNamedView *nv = sp_desktop_namedview(dt);
 638     Inkscape::CanvasGrid * found_grid = NULL;
 639     for (GSList const * l = nv->grids; l != NULL; l = l->next) {
 640         Inkscape::CanvasGrid * grid = (Inkscape::CanvasGrid*) l->data;
 641         gchar const *idtext = grid->repr->attribute("id");
 642         if ( !strcmp(tabtext.c_str(), idtext) ) {
 643             found_grid = grid;
 644             break; // break out of for-loop
 645         }
 646     }
 647     if (found_grid) {
 648         // delete the grid that corresponds with the selected tab
 649         // when the grid is deleted from SVG, the SPNamedview handler automatically deletes the object, so found_grid becomes an invalid pointer!
 650         found_grid->repr->parent()->removeChild(found_grid->repr);
 651     }
 652 }
 653
 654
 655 } // namespace Dialog
 656 } // namespace UI
 657 } // namespace Inkscape
 658
 659 /*
 660   Local Variables:
 661   mode:c++
 662   c-file-style:"stroustrup"
 663   c-file-offsets:((innamespace . 0)(inline-open . 0))
 664   indent-tabs-mode:nilu
 665   fill-column:99
 666   End:
 667 */
 668 // vim: filetype=c++:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :