1 #define __SP_DESKTOP_C__
3 /** \file
4 * Editable view implementation
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * MenTaLguY <mental@rydia.net>
9 * bulia byak <buliabyak@users.sf.net>
10 * Ralf Stephan <ralf@ark.in-berlin.de>
11 * John Bintz <jcoswell@coswellproductions.org>
12 * Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
13 *
14 * Copyright (C) 2007 Jon A. Cruz
15 * Copyright (C) 2006-2008 Johan Engelen
16 * Copyright (C) 2006 John Bintz
17 * Copyright (C) 2004 MenTaLguY
18 * Copyright (C) 1999-2002 Lauris Kaplinski
19 * Copyright (C) 2000-2001 Ximian, Inc.
20 *
21 * Released under GNU GPL, read the file 'COPYING' for more information
22 */
24 /** \class SPDesktop
25 * SPDesktop is a subclass of View, implementing an editable document
26 * canvas. It is extensively used by many UI controls that need certain
27 * visual representations of their own.
28 *
29 * SPDesktop provides a certain set of SPCanvasItems, serving as GUI
30 * layers of different control objects. The one containing the whole
31 * document is the drawing layer. In addition to it, there are grid,
32 * guide, sketch and control layers. The sketch layer is used for
33 * temporary drawing objects, before the real objects in document are
34 * created. The control layer contains editing knots, rubberband and
35 * similar non-document UI objects.
36 *
37 * Each SPDesktop is associated with a SPNamedView node of the document
38 * tree. Currently, all desktops are created from a single main named
39 * view, but in the future there may be support for different ones.
40 * SPNamedView serves as an in-document container for desktop-related
41 * data, like grid and guideline placement, snapping options and so on.
42 *
43 * Associated with each SPDesktop are the two most important editing
44 * related objects - SPSelection and SPEventContext.
45 *
46 * Sodipodi keeps track of the active desktop and invokes notification
47 * signals whenever it changes. UI elements can use these to update their
48 * display to the selection of the currently active editing window.
49 * (Lauris Kaplinski)
50 */
52 #ifdef HAVE_CONFIG_H
53 # include "config.h"
54 #endif
56 #include <glibmm/i18n.h>
57 #include <sigc++/functors/mem_fun.h>
58 #include <gtkmm.h>
60 #include <2geom/rect.h>
61 #include "macros.h"
62 #include "inkscape-private.h"
63 #include "desktop.h"
64 #include "desktop-events.h"
65 #include "desktop-handles.h"
66 #include "document.h"
67 #include "message-stack.h"
68 #include "selection.h"
69 #include "select-context.h"
70 #include "sp-namedview.h"
71 #include "color.h"
72 #include "sp-item-group.h"
73 #include "preferences.h"
74 #include "object-hierarchy.h"
75 #include "helper/units.h"
76 #include "display/canvas-arena.h"
77 #include "display/nr-arena.h"
78 #include "display/gnome-canvas-acetate.h"
79 #include "display/sodipodi-ctrlrect.h"
80 #include "display/sp-canvas-util.h"
81 #include "display/canvas-temporary-item-list.h"
82 #include "display/snap-indicator.h"
83 #include "ui/dialog/dialog-manager.h"
84 #include "xml/repr.h"
85 #include "message-context.h"
86 #include "device-manager.h"
87 #include "layer-fns.h"
88 #include "layer-manager.h"
89 #include "event-log.h"
90 #include "display/canvas-grid.h"
91 #include "widgets/desktop-widget.h"
92 #include "box3d-context.h"
94 #include "display/sp-canvas.h"
96 namespace Inkscape { namespace XML { class Node; }}
98 // Callback declarations
99 static void _onSelectionChanged (Inkscape::Selection *selection, SPDesktop *desktop);
100 static gint _arena_handler (SPCanvasArena *arena, NRArenaItem *ai, GdkEvent *event, SPDesktop *desktop);
101 static void _layer_activated(SPObject *layer, SPDesktop *desktop);
102 static void _layer_deactivated(SPObject *layer, SPDesktop *desktop);
103 static void _layer_hierarchy_changed(SPObject *top, SPObject *bottom, SPDesktop *desktop);
104 static void _reconstruction_start(SPDesktop * desktop);
105 static void _reconstruction_finish(SPDesktop * desktop);
106 static void _namedview_modified (SPObject *obj, guint flags, SPDesktop *desktop);
107 static void _update_snap_distances (SPDesktop *desktop);
109 /**
110 * Return new desktop object.
111 * \pre namedview != NULL.
112 * \pre canvas != NULL.
113 */
114 SPDesktop::SPDesktop() :
115 _dlg_mgr( 0 ),
116 namedview( 0 ),
117 canvas( 0 ),
118 selection( 0 ),
119 event_context( 0 ),
120 layer_manager( 0 ),
121 event_log( 0 ),
122 temporary_item_list( 0 ),
123 snapindicator( 0 ),
124 acetate( 0 ),
125 main( 0 ),
126 gridgroup( 0 ),
127 guides( 0 ),
128 drawing( 0 ),
129 sketch( 0 ),
130 controls( 0 ),
131 tempgroup ( 0 ),
132 table( 0 ),
133 page( 0 ),
134 page_border( 0 ),
135 current( 0 ),
136 _focusMode(false),
137 zooms_past( 0 ),
138 zooms_future( 0 ),
139 dkey( 0 ),
140 number( 0 ),
141 window_state(0),
142 interaction_disabled_counter( 0 ),
143 waiting_cursor( false ),
144 guides_active( false ),
145 gr_item( 0 ),
146 gr_point_type( 0 ),
147 gr_point_i( 0 ),
148 gr_fill_or_stroke( true ),
149 _layer_hierarchy( 0 ),
150 _reconstruction_old_layer_id( 0 ),
151 _display_mode(Inkscape::RENDERMODE_NORMAL),
152 _saved_display_mode(Inkscape::RENDERMODE_NORMAL),
153 _widget( 0 ),
154 _inkscape( 0 ),
155 _guides_message_context( 0 ),
156 _active( false ),
157 _w2d(),
158 _d2w(),
159 _doc2dt( Geom::Scale(1, -1) ),
160 grids_visible( false )
161 {
162 _d2w.setIdentity();
163 _w2d.setIdentity();
165 selection = Inkscape::GC::release( new Inkscape::Selection(this) );
166 }
168 void
169 SPDesktop::init (SPNamedView *nv, SPCanvas *aCanvas)
170 {
171 // Temporary workaround for link order issues:
172 Inkscape::DeviceManager::getManager().getDevices();
173 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
175 _guides_message_context = new Inkscape::MessageContext(const_cast<Inkscape::MessageStack*>(messageStack()));
177 current = prefs->getStyle("/desktop/style");
179 namedview = nv;
180 canvas = aCanvas;
182 SPDocument *document = SP_OBJECT_DOCUMENT (namedview);
183 /* Kill flicker */
184 sp_document_ensure_up_to_date (document);
186 /* Setup Dialog Manager */
187 _dlg_mgr = &Inkscape::UI::Dialog::DialogManager::getInstance();
189 dkey = sp_item_display_key_new (1);
191 /* Connect document */
192 setDocument (document);
194 number = namedview->getViewCount();
197 /* Setup Canvas */
198 g_object_set_data (G_OBJECT (canvas), "SPDesktop", this);
200 SPCanvasGroup *root = sp_canvas_root (canvas);
202 /* Setup adminstrative layers */
203 acetate = sp_canvas_item_new (root, GNOME_TYPE_CANVAS_ACETATE, NULL);
204 g_signal_connect (G_OBJECT (acetate), "event", G_CALLBACK (sp_desktop_root_handler), this);
205 main = (SPCanvasGroup *) sp_canvas_item_new (root, SP_TYPE_CANVAS_GROUP, NULL);
206 g_signal_connect (G_OBJECT (main), "event", G_CALLBACK (sp_desktop_root_handler), this);
208 table = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL);
209 SP_CTRLRECT(table)->setRectangle(Geom::Rect(Geom::Point(-80000, -80000), Geom::Point(80000, 80000)));
210 SP_CTRLRECT(table)->setColor(0x00000000, true, 0x00000000);
211 sp_canvas_item_move_to_z (table, 0);
213 page = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL);
214 ((CtrlRect *) page)->setColor(0x00000000, FALSE, 0x00000000);
215 page_border = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL);
217 drawing = sp_canvas_item_new (main, SP_TYPE_CANVAS_ARENA, NULL);
218 g_signal_connect (G_OBJECT (drawing), "arena_event", G_CALLBACK (_arena_handler), this);
220 SP_CANVAS_ARENA (drawing)->arena->delta = prefs->getDouble("/options/cursortolerance/value", 1.0); // default is 1 px
222 if (prefs->getBool("/options/startmode/outline")) {
223 // Start in outline mode
224 setDisplayModeOutline();
225 } else {
226 // Start in normal mode, default
227 setDisplayModeNormal();
228 }
230 gridgroup = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
231 guides = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
232 sketch = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
233 controls = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
234 tempgroup = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
236 /* Push select tool to the bottom of stack */
237 /** \todo
238 * FIXME: this is the only call to this. Everything else seems to just
239 * call "set" instead of "push". Can we assume that there is only one
240 * context ever?
241 */
242 push_event_context (SP_TYPE_SELECT_CONTEXT, "/tools/select", SP_EVENT_CONTEXT_STATIC);
244 // display rect and zoom are now handled in sp_desktop_widget_realize()
246 Geom::Rect const d(Geom::Point(0.0, 0.0),
247 Geom::Point(sp_document_width(document), sp_document_height(document)));
249 SP_CTRLRECT(page)->setRectangle(d);
250 SP_CTRLRECT(page_border)->setRectangle(d);
252 /* the following sets the page shadow on the canvas
253 It was originally set to 5, which is really cheesy!
254 It now is an attribute in the document's namedview. If a value of
255 0 is used, then the constructor for a shadow is not initialized.
256 */
258 if ( namedview->pageshadow != 0 && namedview->showpageshadow ) {
259 SP_CTRLRECT(page_border)->setShadow(namedview->pageshadow, 0x3f3f3fff);
260 }
263 /* Connect event for page resize */
264 _doc2dt[5] = sp_document_height (document);
265 sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (drawing), _doc2dt);
267 _modified_connection = namedview->connectModified(sigc::bind<2>(sigc::ptr_fun(&_namedview_modified), this));
269 NRArenaItem *ai = sp_item_invoke_show (SP_ITEM (sp_document_root (document)),
270 SP_CANVAS_ARENA (drawing)->arena,
271 dkey,
272 SP_ITEM_SHOW_DISPLAY);
273 if (ai) {
274 nr_arena_item_add_child (SP_CANVAS_ARENA (drawing)->root, ai, NULL);
275 }
277 namedview->show(this);
278 /* Ugly hack */
279 activate_guides (true);
280 /* Ugly hack */
281 _namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this);
283 /* Set up notification of rebuilding the document, this allows
284 for saving object related settings in the document. */
285 _reconstruction_start_connection =
286 document->connectReconstructionStart(sigc::bind(sigc::ptr_fun(_reconstruction_start), this));
287 _reconstruction_finish_connection =
288 document->connectReconstructionFinish(sigc::bind(sigc::ptr_fun(_reconstruction_finish), this));
289 _reconstruction_old_layer_id = NULL;
291 // ?
292 // sp_active_desktop_set (desktop);
293 _inkscape = INKSCAPE;
295 _activate_connection = _activate_signal.connect(
296 sigc::bind(
297 sigc::ptr_fun(_onActivate),
298 this
299 )
300 );
301 _deactivate_connection = _deactivate_signal.connect(
302 sigc::bind(
303 sigc::ptr_fun(_onDeactivate),
304 this
305 )
306 );
308 _sel_modified_connection = selection->connectModified(
309 sigc::bind(
310 sigc::ptr_fun(&_onSelectionModified),
311 this
312 )
313 );
314 _sel_changed_connection = selection->connectChanged(
315 sigc::bind(
316 sigc::ptr_fun(&_onSelectionChanged),
317 this
318 )
319 );
322 /* setup LayerManager */
323 // (Setting up after the connections are all in place, as it may use some of them)
324 layer_manager = new Inkscape::LayerManager( this );
326 showGrids(namedview->grids_visible, false);
328 temporary_item_list = new Inkscape::Display::TemporaryItemList( this );
329 snapindicator = new Inkscape::Display::SnapIndicator ( this );
330 }
333 void SPDesktop::destroy()
334 {
335 if (snapindicator) {
336 delete snapindicator;
337 snapindicator = NULL;
338 }
339 if (temporary_item_list) {
340 delete temporary_item_list;
341 temporary_item_list = NULL;
342 }
344 if (selection) {
345 delete selection;
346 selection = NULL;
347 }
349 namedview->hide(this);
351 _activate_connection.disconnect();
352 _deactivate_connection.disconnect();
353 _sel_modified_connection.disconnect();
354 _sel_changed_connection.disconnect();
355 _modified_connection.disconnect();
356 _commit_connection.disconnect();
357 _reconstruction_start_connection.disconnect();
358 _reconstruction_finish_connection.disconnect();
360 g_signal_handlers_disconnect_by_func(G_OBJECT (acetate), (gpointer) G_CALLBACK(sp_desktop_root_handler), this);
361 g_signal_handlers_disconnect_by_func(G_OBJECT (main), (gpointer) G_CALLBACK(sp_desktop_root_handler), this);
362 g_signal_handlers_disconnect_by_func(G_OBJECT (drawing), (gpointer) G_CALLBACK(_arena_handler), this);
364 while (event_context) {
365 SPEventContext *ec = event_context;
366 event_context = ec->next;
367 sp_event_context_finish (ec);
368 g_object_unref (G_OBJECT (ec));
369 }
371 if (_layer_hierarchy) {
372 delete _layer_hierarchy;
373 // _layer_hierarchy = NULL; //this should be here, but commented to find other bug somewhere else.
374 }
376 if (layer_manager) {
377 delete layer_manager;
378 layer_manager = NULL;
379 }
381 if (_inkscape) {
382 _inkscape = NULL;
383 }
385 if (drawing) {
386 sp_item_invoke_hide (SP_ITEM (sp_document_root (doc())), dkey);
387 drawing = NULL;
388 }
390 delete _guides_message_context;
391 _guides_message_context = NULL;
393 g_list_free (zooms_past);
394 g_list_free (zooms_future);
395 }
397 SPDesktop::~SPDesktop() {}
399 //--------------------------------------------------------------------
400 /* Public methods */
403 /* These methods help for temporarily showing things on-canvas.
404 * The *only* valid use of the TemporaryItem* that you get from add_temporary_canvasitem
405 * is when you want to prematurely remove the item from the canvas, by calling
406 * desktop->remove_temporary_canvasitem(tempitem).
407 */
408 /** Note that lifetime is measured in milliseconds
409 * One should *not* keep a reference to the SPCanvasItem, the temporary item code will
410 * delete the object for you and the reference will become invalid without you knowing it.
411 * It is perfectly safe to ignore the returned pointer: the object is deleted by itself, so don't delete it elsewhere!
412 * The *only* valid use of the returned TemporaryItem* is as argument for SPDesktop::remove_temporary_canvasitem,
413 * because the object might be deleted already without you knowing it.
414 * move_to_bottom = true by default so the item does not interfere with handling of other items on the canvas like nodes.
415 */
416 Inkscape::Display::TemporaryItem *
417 SPDesktop::add_temporary_canvasitem (SPCanvasItem *item, guint lifetime, bool move_to_bottom)
418 {
419 if (move_to_bottom) {
420 sp_canvas_item_move_to_z(item, 0);
421 }
423 return temporary_item_list->add_item(item, lifetime);
424 }
426 /** It is perfectly safe to call this function while the object has already been deleted due to a timeout.
427 */
428 void
429 SPDesktop::remove_temporary_canvasitem (Inkscape::Display::TemporaryItem * tempitem)
430 {
431 // check for non-null temporary_item_list, because during destruction of desktop, some destructor might try to access this list!
432 if (tempitem && temporary_item_list) {
433 temporary_item_list->delete_item(tempitem);
434 }
435 }
437 void SPDesktop::_setDisplayMode(Inkscape::RenderMode mode) {
438 SP_CANVAS_ARENA (drawing)->arena->rendermode = mode;
439 canvas->rendermode = mode;
440 _display_mode = mode;
441 if (mode != Inkscape::RENDERMODE_OUTLINE) {
442 _saved_display_mode = _display_mode;
443 }
444 sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (main), _d2w); // redraw
445 _widget->setTitle(SP_DOCUMENT_NAME(sp_desktop_document(this)));
446 }
448 void SPDesktop::displayModeToggle() {
449 if (_display_mode == Inkscape::RENDERMODE_OUTLINE) {
450 _setDisplayMode(_saved_display_mode);
451 } else {
452 _setDisplayMode(Inkscape::RENDERMODE_OUTLINE);
453 }
454 }
456 /**
457 * Returns current root (=bottom) layer.
458 */
459 SPObject *SPDesktop::currentRoot() const
460 {
461 return _layer_hierarchy ? _layer_hierarchy->top() : NULL;
462 }
464 /**
465 * Returns current top layer.
466 */
467 SPObject *SPDesktop::currentLayer() const
468 {
469 return _layer_hierarchy ? _layer_hierarchy->bottom() : NULL;
470 }
472 /**
473 * Sets the current layer of the desktop.
474 *
475 * Make \a object the top layer.
476 */
477 void SPDesktop::setCurrentLayer(SPObject *object) {
478 g_return_if_fail(SP_IS_GROUP(object));
479 g_return_if_fail( currentRoot() == object || (currentRoot() && currentRoot()->isAncestorOf(object)) );
480 // printf("Set Layer to ID: %s\n", SP_OBJECT_ID(object));
481 _layer_hierarchy->setBottom(object);
482 }
484 void SPDesktop::toggleLayerSolo(SPObject *object) {
485 g_return_if_fail(SP_IS_GROUP(object));
486 g_return_if_fail( currentRoot() == object || (currentRoot() && currentRoot()->isAncestorOf(object)) );
488 bool othersShowing = false;
489 std::vector<SPObject*> layers;
490 for ( SPObject* obj = Inkscape::next_layer(currentRoot(), object); obj; obj = Inkscape::next_layer(currentRoot(), obj) ) {
491 layers.push_back(obj);
492 othersShowing |= !SP_ITEM(obj)->isHidden();
493 }
494 for ( SPObject* obj = Inkscape::previous_layer(currentRoot(), object); obj; obj = Inkscape::previous_layer(currentRoot(), obj) ) {
495 layers.push_back(obj);
496 othersShowing |= !SP_ITEM(obj)->isHidden();
497 }
500 if ( SP_ITEM(object)->isHidden() ) {
501 SP_ITEM(object)->setHidden(false);
502 }
504 for ( std::vector<SPObject*>::iterator it = layers.begin(); it != layers.end(); ++it ) {
505 SP_ITEM(*it)->setHidden(othersShowing);
506 }
507 }
509 /**
510 * Return layer that contains \a object.
511 */
512 SPObject *SPDesktop::layerForObject(SPObject *object) {
513 g_return_val_if_fail(object != NULL, NULL);
515 SPObject *root=currentRoot();
516 object = SP_OBJECT_PARENT(object);
517 while ( object && object != root && !isLayer(object) ) {
518 object = SP_OBJECT_PARENT(object);
519 }
520 return object;
521 }
523 /**
524 * True if object is a layer.
525 */
526 bool SPDesktop::isLayer(SPObject *object) const {
527 return ( SP_IS_GROUP(object)
528 && ( SP_GROUP(object)->effectiveLayerMode(this->dkey)
529 == SPGroup::LAYER ) );
530 }
532 /**
533 * True if desktop viewport fully contains \a item's bbox.
534 */
535 bool SPDesktop::isWithinViewport (SPItem *item) const
536 {
537 Geom::Rect const viewport = get_display_area();
538 Geom::OptRect const bbox = sp_item_bbox_desktop(item);
539 if (bbox) {
540 return viewport.contains(*bbox);
541 } else {
542 return true;
543 }
544 }
546 ///
547 bool SPDesktop::itemIsHidden(SPItem const *item) const {
548 return item->isHidden(this->dkey);
549 }
551 /**
552 * Set activate property of desktop; emit signal if changed.
553 */
554 void
555 SPDesktop::set_active (bool new_active)
556 {
557 if (new_active != _active) {
558 _active = new_active;
559 if (new_active) {
560 _activate_signal.emit();
561 } else {
562 _deactivate_signal.emit();
563 }
564 }
565 }
567 /**
568 * Set activate status of current desktop's named view.
569 */
570 void
571 SPDesktop::activate_guides(bool activate)
572 {
573 guides_active = activate;
574 namedview->activateGuides(this, activate);
575 }
577 /**
578 * Make desktop switch documents.
579 */
580 void
581 SPDesktop::change_document (SPDocument *theDocument)
582 {
583 g_return_if_fail (theDocument != NULL);
585 /* unselect everything before switching documents */
586 selection->clear();
588 setDocument (theDocument);
590 /* update the rulers, connect the desktop widget's signal to the new namedview etc.
591 (this can probably be done in a better way) */
592 Gtk::Window *parent = this->getToplevel();
593 g_assert(parent != NULL);
594 SPDesktopWidget *dtw = (SPDesktopWidget *) parent->get_data("desktopwidget");
595 if (dtw) dtw->desktop = this;
596 sp_desktop_widget_update_namedview(dtw);
598 _namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this);
599 _document_replaced_signal.emit (this, theDocument);
600 }
602 /**
603 * Make desktop switch event contexts.
604 */
605 void
606 SPDesktop::set_event_context (GtkType type, const gchar *config)
607 {
608 SPEventContext *ec;
609 while (event_context) {
610 ec = event_context;
611 sp_event_context_deactivate (ec);
612 event_context = ec->next;
613 sp_event_context_finish (ec);
614 g_object_unref (G_OBJECT (ec));
615 }
617 ec = sp_event_context_new (type, this, config, SP_EVENT_CONTEXT_STATIC);
618 ec->next = event_context;
619 event_context = ec;
620 sp_event_context_activate (ec);
621 _event_context_changed_signal.emit (this, ec);
622 }
624 /**
625 * Push event context onto desktop's context stack.
626 */
627 void
628 SPDesktop::push_event_context (GtkType type, const gchar *config, unsigned int key)
629 {
630 SPEventContext *ref, *ec;
632 if (event_context && event_context->key == key) return;
633 ref = event_context;
634 while (ref && ref->next && ref->next->key != key) ref = ref->next;
635 if (ref && ref->next) {
636 ec = ref->next;
637 ref->next = ec->next;
638 sp_event_context_finish (ec);
639 g_object_unref (G_OBJECT (ec));
640 }
642 if (event_context) sp_event_context_deactivate (event_context);
643 ec = sp_event_context_new (type, this, config, key);
644 ec->next = event_context;
645 event_context = ec;
646 sp_event_context_activate (ec);
647 _event_context_changed_signal.emit (this, ec);
648 }
650 /**
651 * Sets the coordinate status to a given point
652 */
653 void
654 SPDesktop::set_coordinate_status (Geom::Point p) {
655 _widget->setCoordinateStatus(p);
656 }
658 /**
659 * \see sp_document_item_from_list_at_point_bottom()
660 */
661 SPItem *
662 SPDesktop::item_from_list_at_point_bottom (const GSList *list, Geom::Point const p) const
663 {
664 g_return_val_if_fail (doc() != NULL, NULL);
665 return sp_document_item_from_list_at_point_bottom (dkey, SP_GROUP (doc()->root), list, p);
666 }
668 /**
669 * \see sp_document_item_at_point()
670 */
671 SPItem *
672 SPDesktop::item_at_point (Geom::Point const p, bool into_groups, SPItem *upto) const
673 {
674 g_return_val_if_fail (doc() != NULL, NULL);
675 return sp_document_item_at_point (doc(), dkey, p, into_groups, upto);
676 }
678 /**
679 * \see sp_document_group_at_point()
680 */
681 SPItem *
682 SPDesktop::group_at_point (Geom::Point const p) const
683 {
684 g_return_val_if_fail (doc() != NULL, NULL);
685 return sp_document_group_at_point (doc(), dkey, p);
686 }
688 /**
689 * \brief Returns the mouse point in document coordinates; if mouse is
690 * outside the canvas, returns the center of canvas viewpoint
691 */
692 Geom::Point
693 SPDesktop::point() const
694 {
695 Geom::Point p = _widget->getPointer();
696 Geom::Point pw = sp_canvas_window_to_world (canvas, p);
697 p = w2d(pw);
699 Geom::Rect const r = canvas->getViewbox();
701 Geom::Point r0 = w2d(r.min());
702 Geom::Point r1 = w2d(r.max());
704 if (p[Geom::X] >= r0[Geom::X] &&
705 p[Geom::X] <= r1[Geom::X] &&
706 p[Geom::Y] >= r1[Geom::Y] &&
707 p[Geom::Y] <= r0[Geom::Y])
708 {
709 return p;
710 } else {
711 return (r0 + r1) / 2;
712 }
713 }
715 /**
716 * Put current zoom data in history list.
717 */
718 void
719 SPDesktop::push_current_zoom (GList **history)
720 {
721 Geom::Rect const area = get_display_area();
723 NRRect *old_zoom = g_new(NRRect, 1);
724 old_zoom->x0 = area.min()[Geom::X];
725 old_zoom->x1 = area.max()[Geom::X];
726 old_zoom->y0 = area.min()[Geom::Y];
727 old_zoom->y1 = area.max()[Geom::Y];
728 if ( *history == NULL
729 || !( ( ((NRRect *) ((*history)->data))->x0 == old_zoom->x0 ) &&
730 ( ((NRRect *) ((*history)->data))->x1 == old_zoom->x1 ) &&
731 ( ((NRRect *) ((*history)->data))->y0 == old_zoom->y0 ) &&
732 ( ((NRRect *) ((*history)->data))->y1 == old_zoom->y1 ) ) )
733 {
734 *history = g_list_prepend (*history, old_zoom);
735 }
736 }
738 /**
739 * Set viewbox (x0, x1, y0 and y1 are in document pixels. Border is in screen pixels).
740 */
741 void
742 SPDesktop::set_display_area (double x0, double y0, double x1, double y1, double border, bool log)
743 {
744 g_assert(_widget);
746 // save the zoom
747 if (log) {
748 push_current_zoom(&zooms_past);
749 // if we do a logged zoom, our zoom-forward list is invalidated, so delete it
750 g_list_free (zooms_future);
751 zooms_future = NULL;
752 }
754 double const cx = 0.5 * (x0 + x1);
755 double const cy = 0.5 * (y0 + y1);
757 // FIXME: This 2geom idiom doesn't allow us to declare dbox const
758 Geom::Rect viewbox = canvas->getViewbox();
759 viewbox.expandBy(-border);
761 double scale = _d2w.descrim();
762 double newscale;
763 if (((x1 - x0) * viewbox.dimensions()[Geom::Y]) > ((y1 - y0) * viewbox.dimensions()[Geom::X])) {
764 newscale = viewbox.dimensions()[Geom::X] / (x1 - x0);
765 } else {
766 newscale = viewbox.dimensions()[Geom::Y] / (y1 - y0);
767 }
769 newscale = CLAMP(newscale, SP_DESKTOP_ZOOM_MIN, SP_DESKTOP_ZOOM_MAX); // unit: 'screen pixels' per 'document pixels'
771 int clear = FALSE;
772 if (!NR_DF_TEST_CLOSE (newscale, scale, 1e-4 * scale)) {
773 /* Set zoom factors */
774 _d2w = Geom::Scale(newscale, -newscale);
775 _w2d = Geom::Scale(1/newscale, 1/-newscale);
776 sp_canvas_item_affine_absolute(SP_CANVAS_ITEM(main), _d2w);
777 clear = TRUE;
778 }
780 /* Calculate top left corner (in document pixels) */
781 x0 = cx - 0.5 * viewbox.dimensions()[Geom::X] / newscale;
782 y1 = cy + 0.5 * viewbox.dimensions()[Geom::Y] / newscale;
784 /* Scroll */
785 sp_canvas_scroll_to (canvas, x0 * newscale - border, y1 * -newscale - border, clear);
787 /* update perspective lines if we are in the 3D box tool (so that infinite ones are shown correctly) */
788 sp_box3d_context_update_lines(event_context);
790 _widget->updateRulers();
791 _widget->updateScrollbars(_d2w.descrim());
792 _widget->updateZoom();
793 }
795 void SPDesktop::set_display_area(Geom::Rect const &a, Geom::Coord b, bool log)
796 {
797 set_display_area(a.min()[Geom::X], a.min()[Geom::Y], a.max()[Geom::X], a.max()[Geom::Y], b, log);
798 }
800 /**
801 * Return viewbox dimensions.
802 */
803 Geom::Rect SPDesktop::get_display_area() const
804 {
805 Geom::Rect const viewbox = canvas->getViewbox();
807 double const scale = _d2w[0];
809 return Geom::Rect(Geom::Point(viewbox.min()[Geom::X] / scale, viewbox.max()[Geom::Y] / -scale),
810 Geom::Point(viewbox.max()[Geom::X] / scale, viewbox.min()[Geom::Y] / -scale));
811 }
813 /**
814 * Revert back to previous zoom if possible.
815 */
816 void
817 SPDesktop::prev_zoom()
818 {
819 if (zooms_past == NULL) {
820 messageStack()->flash(Inkscape::WARNING_MESSAGE, _("No previous zoom."));
821 return;
822 }
824 // push current zoom into forward zooms list
825 push_current_zoom (&zooms_future);
827 // restore previous zoom
828 set_display_area (((NRRect *) zooms_past->data)->x0,
829 ((NRRect *) zooms_past->data)->y0,
830 ((NRRect *) zooms_past->data)->x1,
831 ((NRRect *) zooms_past->data)->y1,
832 0, false);
834 // remove the just-added zoom from the past zooms list
835 zooms_past = g_list_remove (zooms_past, ((NRRect *) zooms_past->data));
836 }
838 /**
839 * Set zoom to next in list.
840 */
841 void
842 SPDesktop::next_zoom()
843 {
844 if (zooms_future == NULL) {
845 this->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("No next zoom."));
846 return;
847 }
849 // push current zoom into past zooms list
850 push_current_zoom (&zooms_past);
852 // restore next zoom
853 set_display_area (((NRRect *) zooms_future->data)->x0,
854 ((NRRect *) zooms_future->data)->y0,
855 ((NRRect *) zooms_future->data)->x1,
856 ((NRRect *) zooms_future->data)->y1,
857 0, false);
859 // remove the just-used zoom from the zooms_future list
860 zooms_future = g_list_remove (zooms_future, ((NRRect *) zooms_future->data));
861 }
863 #include "tools-switch.h"
864 #include "node-context.h"
865 #include "shape-editor.h"
866 #include "nodepath.h"
868 /** \brief Performs a quick zoom into what the user is working on
869 \param enable Whether we're going in or out of quick zoom
871 */
872 void
873 SPDesktop::zoom_quick (bool enable)
874 {
875 if (enable == _quick_zoom_enabled) {
876 return;
877 }
879 if (enable == true) {
880 _quick_zoom_stored_area = get_display_area();
881 bool zoomed = false;
883 if (!zoomed) {
884 SPItem * singleItem = selection->singleItem();
885 if (singleItem != NULL && tools_isactive(this, TOOLS_NODES)) {
887 Inkscape::NodePath::Path * nodepath = event_context->shape_editor->get_nodepath();
888 // printf("I've got a nodepath, crazy\n");
890 Geom::Rect nodes;
891 bool firstnode = true;
893 if (nodepath->selected) {
894 for (GList *spl = nodepath->subpaths; spl != NULL; spl = spl->next) {
895 Inkscape::NodePath::SubPath *subpath = (Inkscape::NodePath::SubPath *) spl->data;
896 for (GList *nl = subpath->nodes; nl != NULL; nl = nl->next) {
897 Inkscape::NodePath::Node *node = (Inkscape::NodePath::Node *) nl->data;
898 if (node->selected) {
899 // printf("\tSelected node\n");
900 if (firstnode) {
901 nodes = Geom::Rect(node->pos, node->pos);
902 firstnode = false;
903 } else {
904 nodes.expandTo(node->pos);
905 }
907 if (node->p.other != NULL) {
908 /* Include previous node pos */
909 nodes.expandTo(node->p.other->pos);
911 /* Include previous handle */
912 if (!sp_node_side_is_line(node, &node->p)) {
913 nodes.expandTo(node->p.pos);
914 }
915 }
917 if (node->n.other != NULL) {
918 /* Include previous node pos */
919 nodes.expandTo(node->n.other->pos);
921 /* Include previous handle */
922 if (!sp_node_side_is_line(node, &node->n)) {
923 nodes.expandTo(node->n.pos);
924 }
925 }
926 }
927 }
928 }
930 if (!firstnode && nodes.area() * 2.0 < _quick_zoom_stored_area.area()) {
931 set_display_area(nodes, 10);
932 zoomed = true;
933 }
934 }
935 }
936 }
938 if (!zoomed) {
939 Geom::OptRect const d = selection->bounds();
940 if (d && d->area() * 2.0 < _quick_zoom_stored_area.area()) {
941 set_display_area(*d, 10);
942 zoomed = true;
943 }
944 }
946 if (!zoomed) {
947 zoom_relative(_quick_zoom_stored_area.midpoint()[Geom::X], _quick_zoom_stored_area.midpoint()[Geom::Y], 2.0);
948 zoomed = true;
949 }
950 } else {
951 set_display_area(_quick_zoom_stored_area, 0);
952 }
954 _quick_zoom_enabled = enable;
955 return;
956 }
958 /**
959 * Zoom to point with absolute zoom factor.
960 */
961 void
962 SPDesktop::zoom_absolute_keep_point (double cx, double cy, double px, double py, double zoom)
963 {
964 zoom = CLAMP (zoom, SP_DESKTOP_ZOOM_MIN, SP_DESKTOP_ZOOM_MAX);
966 // maximum or minimum zoom reached, but there's no exact equality because of rounding errors;
967 // this check prevents "sliding" when trying to zoom in at maximum zoom;
968 /// \todo someone please fix calculations properly and remove this hack
969 if (fabs(_d2w.descrim() - zoom) < 0.0001*zoom && (fabs(SP_DESKTOP_ZOOM_MAX - zoom) < 0.01 || fabs(SP_DESKTOP_ZOOM_MIN - zoom) < 0.000001))
970 return;
972 Geom::Rect const viewbox = canvas->getViewbox();
974 double const width2 = viewbox.dimensions()[Geom::X] / zoom;
975 double const height2 = viewbox.dimensions()[Geom::Y] / zoom;
977 set_display_area(cx - px * width2,
978 cy - py * height2,
979 cx + (1 - px) * width2,
980 cy + (1 - py) * height2,
981 0.0);
982 }
984 /**
985 * Zoom to center with absolute zoom factor.
986 */
987 void
988 SPDesktop::zoom_absolute (double cx, double cy, double zoom)
989 {
990 zoom_absolute_keep_point (cx, cy, 0.5, 0.5, zoom);
991 }
993 /**
994 * Zoom to point with relative zoom factor.
995 */
996 void
997 SPDesktop::zoom_relative_keep_point (double cx, double cy, double zoom)
998 {
999 Geom::Rect const area = get_display_area();
1001 if (cx < area.min()[Geom::X]) {
1002 cx = area.min()[Geom::X];
1003 }
1004 if (cx > area.max()[Geom::X]) {
1005 cx = area.max()[Geom::X];
1006 }
1007 if (cy < area.min()[Geom::Y]) {
1008 cy = area.min()[Geom::Y];
1009 }
1010 if (cy > area.max()[Geom::Y]) {
1011 cy = area.max()[Geom::Y];
1012 }
1014 gdouble const scale = _d2w.descrim() * zoom;
1015 double const px = (cx - area.min()[Geom::X]) / area.dimensions()[Geom::X];
1016 double const py = (cy - area.min()[Geom::Y]) / area.dimensions()[Geom::Y];
1018 zoom_absolute_keep_point(cx, cy, px, py, scale);
1019 }
1021 /**
1022 * Zoom to center with relative zoom factor.
1023 */
1024 void
1025 SPDesktop::zoom_relative (double cx, double cy, double zoom)
1026 {
1027 gdouble scale = _d2w.descrim() * zoom;
1028 zoom_absolute (cx, cy, scale);
1029 }
1031 /**
1032 * Set display area to origin and current document dimensions.
1033 */
1034 void
1035 SPDesktop::zoom_page()
1036 {
1037 Geom::Rect d(Geom::Point(0, 0),
1038 Geom::Point(sp_document_width(doc()), sp_document_height(doc())));
1040 if (d.minExtent() < 1.0) {
1041 return;
1042 }
1044 set_display_area(d, 10);
1045 }
1047 /**
1048 * Set display area to current document width.
1049 */
1050 void
1051 SPDesktop::zoom_page_width()
1052 {
1053 Geom::Rect const a = get_display_area();
1055 if (sp_document_width(doc()) < 1.0) {
1056 return;
1057 }
1059 Geom::Rect d(Geom::Point(0, a.midpoint()[Geom::Y]),
1060 Geom::Point(sp_document_width(doc()), a.midpoint()[Geom::Y]));
1062 set_display_area(d, 10);
1063 }
1065 /**
1066 * Zoom to selection.
1067 */
1068 void
1069 SPDesktop::zoom_selection()
1070 {
1071 Geom::OptRect const d = selection->bounds();
1073 if ( !d || d->minExtent() < 0.1 ) {
1074 return;
1075 }
1077 set_display_area(*d, 10);
1078 }
1080 /**
1081 * Tell widget to let zoom widget grab keyboard focus.
1082 */
1083 void
1084 SPDesktop::zoom_grab_focus()
1085 {
1086 _widget->letZoomGrabFocus();
1087 }
1089 /**
1090 * Zoom to whole drawing.
1091 */
1092 void
1093 SPDesktop::zoom_drawing()
1094 {
1095 g_return_if_fail (doc() != NULL);
1096 SPItem *docitem = SP_ITEM (sp_document_root (doc()));
1097 g_return_if_fail (docitem != NULL);
1099 Geom::OptRect d = sp_item_bbox_desktop(docitem);
1101 /* Note that the second condition here indicates that
1102 ** there are no items in the drawing.
1103 */
1104 if ( !d || d->minExtent() < 0.1 ) {
1105 return;
1106 }
1108 set_display_area(*d, 10);
1109 }
1111 /**
1112 * Scroll canvas by specific coordinate amount in svg coordinates.
1113 */
1114 void
1115 SPDesktop::scroll_world_in_svg_coords (double dx, double dy, bool is_scrolling)
1116 {
1117 double scale = _d2w.descrim();
1118 scroll_world(dx*scale, dy*scale, is_scrolling);
1119 }
1121 /**
1122 * Scroll canvas by specific coordinate amount.
1123 */
1124 void
1125 SPDesktop::scroll_world (double dx, double dy, bool is_scrolling)
1126 {
1127 g_assert(_widget);
1129 Geom::Rect const viewbox = canvas->getViewbox();
1131 sp_canvas_scroll_to(canvas, viewbox.min()[Geom::X] - dx, viewbox.min()[Geom::Y] - dy, FALSE, is_scrolling);
1133 /* update perspective lines if we are in the 3D box tool (so that infinite ones are shown correctly) */
1134 sp_box3d_context_update_lines(event_context);
1136 _widget->updateRulers();
1137 _widget->updateScrollbars(_d2w.descrim());
1138 }
1140 bool
1141 SPDesktop::scroll_to_point (Geom::Point const &p, gdouble autoscrollspeed)
1142 {
1143 using Geom::X;
1144 using Geom::Y;
1146 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1147 gdouble autoscrolldistance = (gdouble) prefs->getIntLimited("/options/autoscrolldistance/value", 0, -1000, 10000);
1149 // autoscrolldistance is in screen pixels, but the display area is in document units
1150 autoscrolldistance /= _d2w.descrim();
1151 // FIXME: This 2geom idiom doesn't allow us to declare dbox const
1152 Geom::Rect dbox = get_display_area();
1153 dbox.expandBy(-autoscrolldistance);
1155 if (!(p[X] > dbox.min()[X] && p[X] < dbox.max()[X]) ||
1156 !(p[Y] > dbox.min()[Y] && p[Y] < dbox.max()[Y]) ) {
1158 Geom::Point const s_w( p * (Geom::Matrix)_d2w );
1160 gdouble x_to;
1161 if (p[X] < dbox.min()[X])
1162 x_to = dbox.min()[X];
1163 else if (p[X] > dbox.max()[X])
1164 x_to = dbox.max()[X];
1165 else
1166 x_to = p[X];
1168 gdouble y_to;
1169 if (p[Y] < dbox.min()[Y])
1170 y_to = dbox.min()[Y];
1171 else if (p[Y] > dbox.max()[Y])
1172 y_to = dbox.max()[Y];
1173 else
1174 y_to = p[Y];
1176 Geom::Point const d_dt(x_to, y_to);
1177 Geom::Point const d_w( d_dt * _d2w );
1178 Geom::Point const moved_w( d_w - s_w );
1180 if (autoscrollspeed == 0)
1181 autoscrollspeed = prefs->getDoubleLimited("/options/autoscrollspeed/value", 1, 0, 10);
1183 if (autoscrollspeed != 0)
1184 scroll_world (autoscrollspeed * moved_w);
1186 return true;
1187 }
1188 return false;
1189 }
1191 bool
1192 SPDesktop::is_iconified()
1193 {
1194 return 0!=(window_state & GDK_WINDOW_STATE_ICONIFIED);
1195 }
1197 void
1198 SPDesktop::iconify()
1199 {
1200 _widget->setIconified();
1201 }
1203 bool
1204 SPDesktop::is_maximized()
1205 {
1206 return 0!=(window_state & GDK_WINDOW_STATE_MAXIMIZED);
1207 }
1209 void
1210 SPDesktop::maximize()
1211 {
1212 _widget->setMaximized();
1213 }
1215 bool
1216 SPDesktop::is_fullscreen()
1217 {
1218 return 0!=(window_state & GDK_WINDOW_STATE_FULLSCREEN);
1219 }
1221 void
1222 SPDesktop::fullscreen()
1223 {
1224 _widget->setFullscreen();
1225 }
1227 /** \brief Checks to see if the user is working in focused mode
1229 Returns the value of \c _focusMode
1230 */
1231 bool
1232 SPDesktop::is_focusMode()
1233 {
1234 return _focusMode;
1235 }
1237 /** \brief Changes whether the user is in focus mode or not
1238 \param mode Which mode the view should be in
1240 */
1241 void
1242 SPDesktop::focusMode (bool mode)
1243 {
1244 if (mode == _focusMode) { return; }
1246 _focusMode = mode;
1248 layoutWidget();
1249 //sp_desktop_widget_layout(SPDesktopWidget);
1251 return;
1252 }
1254 void
1255 SPDesktop::getWindowGeometry (gint &x, gint &y, gint &w, gint &h)
1256 {
1257 _widget->getGeometry (x, y, w, h);
1258 }
1260 void
1261 SPDesktop::setWindowPosition (Geom::Point p)
1262 {
1263 _widget->setPosition (p);
1264 }
1266 void
1267 SPDesktop::setWindowSize (gint w, gint h)
1268 {
1269 _widget->setSize (w, h);
1270 }
1272 void
1273 SPDesktop::setWindowTransient (void *p, int transient_policy)
1274 {
1275 _widget->setTransient (p, transient_policy);
1276 }
1278 Gtk::Window*
1279 SPDesktop::getToplevel( )
1280 {
1281 return _widget->getWindow();
1282 }
1284 void
1285 SPDesktop::presentWindow()
1286 {
1287 _widget->present();
1288 }
1290 bool
1291 SPDesktop::warnDialog (gchar *text)
1292 {
1293 return _widget->warnDialog (text);
1294 }
1296 void
1297 SPDesktop::toggleRulers()
1298 {
1299 _widget->toggleRulers();
1300 }
1302 void
1303 SPDesktop::toggleScrollbars()
1304 {
1305 _widget->toggleScrollbars();
1306 }
1308 void
1309 SPDesktop::layoutWidget()
1310 {
1311 _widget->layout();
1312 }
1314 void
1315 SPDesktop::destroyWidget()
1316 {
1317 _widget->destroy();
1318 }
1320 bool
1321 SPDesktop::shutdown()
1322 {
1323 return _widget->shutdown();
1324 }
1326 bool SPDesktop::onDeleteUI (GdkEventAny*)
1327 {
1328 if(shutdown())
1329 return true;
1331 destroyWidget();
1332 return false;
1333 }
1335 /**
1336 * onWindowStateEvent
1337 *
1338 * Called when the window changes its maximize/fullscreen/iconify/pinned state.
1339 * Since GTK doesn't have a way to query this state information directly, we
1340 * record it for the desktop here, and also possibly trigger a layout.
1341 */
1342 bool
1343 SPDesktop::onWindowStateEvent (GdkEventWindowState* event)
1344 {
1345 // Record the desktop window's state
1346 window_state = event->new_window_state;
1348 // Layout may differ depending on full-screen mode or not
1349 GdkWindowState changed = event->changed_mask;
1350 if (changed & (GDK_WINDOW_STATE_FULLSCREEN|GDK_WINDOW_STATE_MAXIMIZED)) {
1351 layoutWidget();
1352 }
1354 return false;
1355 }
1357 void
1358 SPDesktop::setToolboxFocusTo (gchar const *label)
1359 {
1360 _widget->setToolboxFocusTo (label);
1361 }
1363 void
1364 SPDesktop::setToolboxAdjustmentValue (gchar const* id, double val)
1365 {
1366 _widget->setToolboxAdjustmentValue (id, val);
1367 }
1369 void
1370 SPDesktop::setToolboxSelectOneValue (gchar const* id, gint val)
1371 {
1372 _widget->setToolboxSelectOneValue (id, val);
1373 }
1375 bool
1376 SPDesktop::isToolboxButtonActive (gchar const *id)
1377 {
1378 return _widget->isToolboxButtonActive (id);
1379 }
1381 void
1382 SPDesktop::emitToolSubselectionChanged(gpointer data)
1383 {
1384 _tool_subselection_changed.emit(data);
1385 inkscape_subselection_changed (this);
1386 }
1388 void
1389 SPDesktop::updateNow()
1390 {
1391 sp_canvas_update_now(canvas);
1392 }
1394 void
1395 SPDesktop::enableInteraction()
1396 {
1397 _widget->enableInteraction();
1398 }
1400 void SPDesktop::disableInteraction()
1401 {
1402 _widget->disableInteraction();
1403 }
1405 void SPDesktop::setWaitingCursor()
1406 {
1407 GdkCursor *waiting = gdk_cursor_new(GDK_WATCH);
1408 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(this))->window, waiting);
1409 gdk_cursor_unref(waiting);
1410 // GDK needs the flush for the cursor change to take effect
1411 gdk_flush();
1412 waiting_cursor = true;
1413 }
1415 void SPDesktop::clearWaitingCursor()
1416 {
1417 if (waiting_cursor)
1418 sp_event_context_update_cursor(sp_desktop_event_context(this));
1419 }
1421 void SPDesktop::toggleColorProfAdjust()
1422 {
1423 _widget->toggleColorProfAdjust();
1424 }
1426 void SPDesktop::toggleGrids()
1427 {
1428 if (namedview->grids) {
1429 if(gridgroup) {
1430 showGrids(!grids_visible);
1431 }
1432 } else {
1433 //there is no grid present at the moment. add a rectangular grid and make it visible
1434 Inkscape::XML::Node *repr = SP_OBJECT_REPR(namedview);
1435 Inkscape::CanvasGrid::writeNewGridToRepr(repr, sp_desktop_document(this), Inkscape::GRID_RECTANGULAR);
1436 showGrids(true);
1437 }
1438 }
1440 void SPDesktop::showGrids(bool show, bool dirty_document)
1441 {
1442 grids_visible = show;
1443 sp_namedview_show_grids(namedview, grids_visible, dirty_document);
1444 if (show) {
1445 sp_canvas_item_show(SP_CANVAS_ITEM(gridgroup));
1446 } else {
1447 sp_canvas_item_hide(SP_CANVAS_ITEM(gridgroup));
1448 }
1449 }
1451 void SPDesktop::toggleSnapGlobal()
1452 {
1453 bool v = namedview->snap_manager.snapprefs.getSnapEnabledGlobally();
1454 Inkscape::XML::Node *repr = SP_OBJECT_REPR(namedview);
1455 sp_repr_set_boolean(repr, "inkscape:snap-global", !v);
1456 }
1458 //----------------------------------------------------------------------
1459 // Callback implementations. The virtual ones are connected by the view.
1461 void
1462 SPDesktop::onPositionSet (double x, double y)
1463 {
1464 _widget->viewSetPosition (Geom::Point(x,y));
1465 }
1467 void
1468 SPDesktop::onResized (double /*x*/, double /*y*/)
1469 {
1470 // Nothing called here
1471 }
1473 /**
1474 * Redraw callback; queues Gtk redraw; connected by View.
1475 */
1476 void
1477 SPDesktop::onRedrawRequested ()
1478 {
1479 if (main) {
1480 _widget->requestCanvasUpdate();
1481 }
1482 }
1484 void
1485 SPDesktop::updateCanvasNow()
1486 {
1487 _widget->requestCanvasUpdateAndWait();
1488 }
1490 /**
1491 * Associate document with desktop.
1492 */
1493 void
1494 SPDesktop::setDocument (SPDocument *doc)
1495 {
1496 if (this->doc() && doc) {
1497 namedview->hide(this);
1498 sp_item_invoke_hide (SP_ITEM (sp_document_root (this->doc())), dkey);
1499 }
1501 if (_layer_hierarchy) {
1502 _layer_hierarchy->clear();
1503 delete _layer_hierarchy;
1504 }
1505 _layer_hierarchy = new Inkscape::ObjectHierarchy(NULL);
1506 _layer_hierarchy->connectAdded(sigc::bind(sigc::ptr_fun(_layer_activated), this));
1507 _layer_hierarchy->connectRemoved(sigc::bind(sigc::ptr_fun(_layer_deactivated), this));
1508 _layer_hierarchy->connectChanged(sigc::bind(sigc::ptr_fun(_layer_hierarchy_changed), this));
1509 _layer_hierarchy->setTop(SP_DOCUMENT_ROOT(doc));
1511 /* setup EventLog */
1512 event_log = new Inkscape::EventLog(doc);
1513 doc->addUndoObserver(*event_log);
1515 _commit_connection.disconnect();
1516 _commit_connection = doc->connectCommit(sigc::mem_fun(*this, &SPDesktop::updateNow));
1518 /// \todo fixme: This condition exists to make sure the code
1519 /// inside is NOT called on initialization, only on replacement. But there
1520 /// are surely more safe methods to accomplish this.
1521 // TODO since the comment had reversed logic, check the intent of this block of code:
1522 if (drawing) {
1523 NRArenaItem *ai = 0;
1525 namedview = sp_document_namedview (doc, NULL);
1526 _modified_connection = namedview->connectModified(sigc::bind<2>(sigc::ptr_fun(&_namedview_modified), this));
1527 number = namedview->getViewCount();
1529 ai = sp_item_invoke_show (SP_ITEM (sp_document_root (doc)),
1530 SP_CANVAS_ARENA (drawing)->arena,
1531 dkey,
1532 SP_ITEM_SHOW_DISPLAY);
1533 if (ai) {
1534 nr_arena_item_add_child (SP_CANVAS_ARENA (drawing)->root, ai, NULL);
1535 }
1536 namedview->show(this);
1537 /* Ugly hack */
1538 activate_guides (true);
1539 /* Ugly hack */
1540 _namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this);
1541 }
1543 _document_replaced_signal.emit (this, doc);
1545 View::setDocument (doc);
1546 }
1548 void
1549 SPDesktop::onStatusMessage
1550 (Inkscape::MessageType type, gchar const *message)
1551 {
1552 if (_widget) {
1553 _widget->setMessage(type, message);
1554 }
1555 }
1557 void
1558 SPDesktop::onDocumentURISet (gchar const* uri)
1559 {
1560 _widget->setTitle(uri);
1561 }
1563 /**
1564 * Resized callback.
1565 */
1566 void
1567 SPDesktop::onDocumentResized (gdouble width, gdouble height)
1568 {
1569 _doc2dt[5] = height;
1570 sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (drawing), _doc2dt);
1571 Geom::Rect const a(Geom::Point(0, 0), Geom::Point(width, height));
1572 SP_CTRLRECT(page)->setRectangle(a);
1573 SP_CTRLRECT(page_border)->setRectangle(a);
1574 }
1577 void
1578 SPDesktop::_onActivate (SPDesktop* dt)
1579 {
1580 if (!dt->_widget) return;
1581 dt->_widget->activateDesktop();
1582 }
1584 void
1585 SPDesktop::_onDeactivate (SPDesktop* dt)
1586 {
1587 if (!dt->_widget) return;
1588 dt->_widget->deactivateDesktop();
1589 }
1591 void
1592 SPDesktop::_onSelectionModified
1593 (Inkscape::Selection */*selection*/, guint /*flags*/, SPDesktop *dt)
1594 {
1595 if (!dt->_widget) return;
1596 dt->_widget->updateScrollbars (dt->_d2w.descrim());
1597 }
1599 static void
1600 _onSelectionChanged
1601 (Inkscape::Selection *selection, SPDesktop *desktop)
1602 {
1603 /** \todo
1604 * only change the layer for single selections, or what?
1605 * This seems reasonable -- for multiple selections there can be many
1606 * different layers involved.
1607 */
1608 SPItem *item=selection->singleItem();
1609 if (item) {
1610 SPObject *layer=desktop->layerForObject(item);
1611 if ( layer && layer != desktop->currentLayer() ) {
1612 desktop->setCurrentLayer(layer);
1613 }
1614 }
1615 }
1617 /**
1618 * Calls event handler of current event context.
1619 * \param arena Unused
1620 * \todo fixme
1621 */
1622 static gint
1623 _arena_handler (SPCanvasArena */*arena*/, NRArenaItem *ai, GdkEvent *event, SPDesktop *desktop)
1624 {
1625 if (ai) {
1626 SPItem *spi = (SPItem*)NR_ARENA_ITEM_GET_DATA (ai);
1627 return sp_event_context_item_handler (desktop->event_context, spi, event);
1628 } else {
1629 return sp_event_context_root_handler (desktop->event_context, event);
1630 }
1631 }
1633 static void
1634 _layer_activated(SPObject *layer, SPDesktop *desktop) {
1635 g_return_if_fail(SP_IS_GROUP(layer));
1636 SP_GROUP(layer)->setLayerDisplayMode(desktop->dkey, SPGroup::LAYER);
1637 }
1639 /// Callback
1640 static void
1641 _layer_deactivated(SPObject *layer, SPDesktop *desktop) {
1642 g_return_if_fail(SP_IS_GROUP(layer));
1643 SP_GROUP(layer)->setLayerDisplayMode(desktop->dkey, SPGroup::GROUP);
1644 }
1646 /// Callback
1647 static void
1648 _layer_hierarchy_changed(SPObject */*top*/, SPObject *bottom,
1649 SPDesktop *desktop)
1650 {
1651 desktop->_layer_changed_signal.emit (bottom);
1652 }
1654 /// Called when document is starting to be rebuilt.
1655 static void
1656 _reconstruction_start (SPDesktop * desktop)
1657 {
1658 // printf("Desktop, starting reconstruction\n");
1659 desktop->_reconstruction_old_layer_id = g_strdup(SP_OBJECT_ID(desktop->currentLayer()));
1660 desktop->_layer_hierarchy->setBottom(desktop->currentRoot());
1662 /*
1663 GSList const * selection_objs = desktop->selection->list();
1664 for (; selection_objs != NULL; selection_objs = selection_objs->next) {
1666 }
1667 */
1668 desktop->selection->clear();
1670 // printf("Desktop, starting reconstruction end\n");
1671 }
1673 /// Called when document rebuild is finished.
1674 static void
1675 _reconstruction_finish (SPDesktop * desktop)
1676 {
1677 // printf("Desktop, finishing reconstruction\n");
1678 if (desktop->_reconstruction_old_layer_id == NULL)
1679 return;
1681 SPObject * newLayer = SP_OBJECT_DOCUMENT(desktop->namedview)->getObjectById(desktop->_reconstruction_old_layer_id);
1682 if (newLayer != NULL)
1683 desktop->setCurrentLayer(newLayer);
1685 g_free(desktop->_reconstruction_old_layer_id);
1686 desktop->_reconstruction_old_layer_id = NULL;
1687 // printf("Desktop, finishing reconstruction end\n");
1688 return;
1689 }
1691 /**
1692 * Namedview_modified callback.
1693 */
1694 static void
1695 _namedview_modified (SPObject *obj, guint flags, SPDesktop *desktop)
1696 {
1697 SPNamedView *nv=SP_NAMEDVIEW(obj);
1699 if (flags & SP_OBJECT_MODIFIED_FLAG) {
1701 /* Recalculate snap distances */
1702 /* FIXME: why is the desktop getting involved in setting up something
1703 ** that is entirely to do with the namedview?
1704 */
1705 _update_snap_distances (desktop);
1707 /* Show/hide page background */
1708 if (nv->pagecolor & 0xff) {
1709 sp_canvas_item_show (desktop->table);
1710 ((CtrlRect *) desktop->table)->setColor(0x00000000, true, nv->pagecolor);
1711 sp_canvas_item_move_to_z (desktop->table, 0);
1712 } else {
1713 sp_canvas_item_hide (desktop->table);
1714 }
1716 /* Show/hide page border */
1717 if (nv->showborder) {
1718 // show
1719 sp_canvas_item_show (desktop->page_border);
1720 // set color and shadow
1721 ((CtrlRect *) desktop->page_border)->setColor(nv->bordercolor, false, 0x00000000);
1722 if (nv->pageshadow) {
1723 ((CtrlRect *) desktop->page_border)->setShadow(nv->pageshadow, nv->bordercolor);
1724 }
1725 // place in the z-order stack
1726 if (nv->borderlayer == SP_BORDER_LAYER_BOTTOM) {
1727 sp_canvas_item_move_to_z (desktop->page_border, 2);
1728 } else {
1729 int order = sp_canvas_item_order (desktop->page_border);
1730 int morder = sp_canvas_item_order (desktop->drawing);
1731 if (morder > order) sp_canvas_item_raise (desktop->page_border,
1732 morder - order);
1733 }
1734 } else {
1735 sp_canvas_item_hide (desktop->page_border);
1736 if (nv->pageshadow) {
1737 ((CtrlRect *) desktop->page)->setShadow(0, 0x00000000);
1738 }
1739 }
1741 /* Show/hide page shadow */
1742 if (nv->showpageshadow && nv->pageshadow) {
1743 ((CtrlRect *) desktop->page_border)->setShadow(nv->pageshadow, nv->bordercolor);
1744 } else {
1745 ((CtrlRect *) desktop->page_border)->setShadow(0, 0x00000000);
1746 }
1748 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1749 if (SP_RGBA32_A_U(nv->pagecolor) < 128 ||
1750 (SP_RGBA32_R_U(nv->pagecolor) +
1751 SP_RGBA32_G_U(nv->pagecolor) +
1752 SP_RGBA32_B_U(nv->pagecolor)) >= 384) {
1753 // the background color is light or transparent, use black outline
1754 SP_CANVAS_ARENA (desktop->drawing)->arena->outlinecolor = prefs->getInt("/options/wireframecolors/onlight", 0xff);
1755 } else { // use white outline
1756 SP_CANVAS_ARENA (desktop->drawing)->arena->outlinecolor = prefs->getInt("/options/wireframecolors/ondark", 0xffffffff);
1757 }
1758 }
1759 }
1761 /**
1762 * Callback to reset snapper's distances.
1763 */
1764 static void
1765 _update_snap_distances (SPDesktop *desktop)
1766 {
1767 SPUnit const &px = sp_unit_get_by_id(SP_UNIT_PX);
1769 SPNamedView &nv = *desktop->namedview;
1771 //tell all grid snappers
1772 for ( GSList const *l = nv.grids; l != NULL; l = l->next) {
1773 Inkscape::CanvasGrid *grid = (Inkscape::CanvasGrid*) l->data;
1774 grid->snapper->setSnapperTolerance(sp_convert_distance_full(nv.gridtolerance,
1775 *nv.gridtoleranceunit,
1776 px));
1777 }
1779 nv.snap_manager.guide.setSnapperTolerance(sp_convert_distance_full(nv.guidetolerance,
1780 *nv.guidetoleranceunit,
1781 px));
1782 nv.snap_manager.object.setSnapperTolerance(sp_convert_distance_full(nv.objecttolerance,
1783 *nv.objecttoleranceunit,
1784 px));
1785 }
1788 Geom::Matrix SPDesktop::w2d() const
1789 {
1790 return _w2d;
1791 }
1793 Geom::Point SPDesktop::w2d(Geom::Point const &p) const
1794 {
1795 return p * _w2d;
1796 }
1798 Geom::Point SPDesktop::d2w(Geom::Point const &p) const
1799 {
1800 return p * _d2w;
1801 }
1803 Geom::Matrix SPDesktop::doc2dt() const
1804 {
1805 return _doc2dt;
1806 }
1808 Geom::Matrix SPDesktop::dt2doc() const
1809 {
1810 // doc2dt is its own inverse
1811 return _doc2dt;
1812 }
1814 Geom::Point SPDesktop::doc2dt(Geom::Point const &p) const
1815 {
1816 return p * _doc2dt;
1817 }
1819 Geom::Point SPDesktop::dt2doc(Geom::Point const &p) const
1820 {
1821 return p * dt2doc();
1822 }
1825 /**
1826 * Pop event context from desktop's context stack. Never used.
1827 */
1828 // void
1829 // SPDesktop::pop_event_context (unsigned int key)
1830 // {
1831 // SPEventContext *ec = NULL;
1832 //
1833 // if (event_context && event_context->key == key) {
1834 // g_return_if_fail (event_context);
1835 // g_return_if_fail (event_context->next);
1836 // ec = event_context;
1837 // sp_event_context_deactivate (ec);
1838 // event_context = ec->next;
1839 // sp_event_context_activate (event_context);
1840 // _event_context_changed_signal.emit (this, ec);
1841 // }
1842 //
1843 // SPEventContext *ref = event_context;
1844 // while (ref && ref->next && ref->next->key != key)
1845 // ref = ref->next;
1846 //
1847 // if (ref && ref->next) {
1848 // ec = ref->next;
1849 // ref->next = ec->next;
1850 // }
1851 //
1852 // if (ec) {
1853 // sp_event_context_finish (ec);
1854 // g_object_unref (G_OBJECT (ec));
1855 // }
1856 // }
1858 /*
1859 Local Variables:
1860 mode:c++
1861 c-file-style:"stroustrup"
1862 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1863 indent-tabs-mode:nil
1864 fill-column:99
1865 End:
1866 */
1867 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :