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);
108 /**
109 * Return new desktop object.
110 * \pre namedview != NULL.
111 * \pre canvas != NULL.
112 */
113 SPDesktop::SPDesktop() :
114 _dlg_mgr( 0 ),
115 namedview( 0 ),
116 canvas( 0 ),
117 selection( 0 ),
118 event_context( 0 ),
119 layer_manager( 0 ),
120 event_log( 0 ),
121 temporary_item_list( 0 ),
122 snapindicator( 0 ),
123 acetate( 0 ),
124 main( 0 ),
125 gridgroup( 0 ),
126 guides( 0 ),
127 drawing( 0 ),
128 sketch( 0 ),
129 controls( 0 ),
130 tempgroup ( 0 ),
131 table( 0 ),
132 page( 0 ),
133 page_border( 0 ),
134 current( 0 ),
135 _focusMode(false),
136 zooms_past( 0 ),
137 zooms_future( 0 ),
138 dkey( 0 ),
139 number( 0 ),
140 window_state(0),
141 interaction_disabled_counter( 0 ),
142 waiting_cursor( false ),
143 guides_active( false ),
144 gr_item( 0 ),
145 gr_point_type( 0 ),
146 gr_point_i( 0 ),
147 gr_fill_or_stroke( true ),
148 _layer_hierarchy( 0 ),
149 _reconstruction_old_layer_id( 0 ),
150 _display_mode(Inkscape::RENDERMODE_NORMAL),
151 _saved_display_mode(Inkscape::RENDERMODE_NORMAL),
152 _widget( 0 ),
153 _inkscape( 0 ),
154 _guides_message_context( 0 ),
155 _active( false ),
156 _w2d(),
157 _d2w(),
158 _doc2dt( Geom::Scale(1, -1) ),
159 grids_visible( false )
160 {
161 _d2w.setIdentity();
162 _w2d.setIdentity();
164 selection = Inkscape::GC::release( new Inkscape::Selection(this) );
165 }
167 void
168 SPDesktop::init (SPNamedView *nv, SPCanvas *aCanvas)
169 {
170 // Temporary workaround for link order issues:
171 Inkscape::DeviceManager::getManager().getDevices();
172 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
174 _guides_message_context = new Inkscape::MessageContext(const_cast<Inkscape::MessageStack*>(messageStack()));
176 current = prefs->getStyle("/desktop/style");
178 namedview = nv;
179 canvas = aCanvas;
181 SPDocument *document = SP_OBJECT_DOCUMENT (namedview);
182 /* Kill flicker */
183 sp_document_ensure_up_to_date (document);
185 /* Setup Dialog Manager */
186 _dlg_mgr = &Inkscape::UI::Dialog::DialogManager::getInstance();
188 dkey = sp_item_display_key_new (1);
190 /* Connect document */
191 setDocument (document);
193 number = namedview->getViewCount();
196 /* Setup Canvas */
197 g_object_set_data (G_OBJECT (canvas), "SPDesktop", this);
199 SPCanvasGroup *root = sp_canvas_root (canvas);
201 /* Setup adminstrative layers */
202 acetate = sp_canvas_item_new (root, GNOME_TYPE_CANVAS_ACETATE, NULL);
203 g_signal_connect (G_OBJECT (acetate), "event", G_CALLBACK (sp_desktop_root_handler), this);
204 main = (SPCanvasGroup *) sp_canvas_item_new (root, SP_TYPE_CANVAS_GROUP, NULL);
205 g_signal_connect (G_OBJECT (main), "event", G_CALLBACK (sp_desktop_root_handler), this);
207 table = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL);
208 SP_CTRLRECT(table)->setRectangle(Geom::Rect(Geom::Point(-80000, -80000), Geom::Point(80000, 80000)));
209 SP_CTRLRECT(table)->setColor(0x00000000, true, 0x00000000);
210 sp_canvas_item_move_to_z (table, 0);
212 page = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL);
213 ((CtrlRect *) page)->setColor(0x00000000, FALSE, 0x00000000);
214 page_border = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL);
216 drawing = sp_canvas_item_new (main, SP_TYPE_CANVAS_ARENA, NULL);
217 g_signal_connect (G_OBJECT (drawing), "arena_event", G_CALLBACK (_arena_handler), this);
219 SP_CANVAS_ARENA (drawing)->arena->delta = prefs->getDouble("/options/cursortolerance/value", 1.0); // default is 1 px
221 if (prefs->getBool("/options/startmode/outline")) {
222 // Start in outline mode
223 setDisplayModeOutline();
224 } else {
225 // Start in normal mode, default
226 setDisplayModeNormal();
227 }
229 gridgroup = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
230 guides = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
231 sketch = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
232 controls = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
233 tempgroup = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL);
235 /* Push select tool to the bottom of stack */
236 /** \todo
237 * FIXME: this is the only call to this. Everything else seems to just
238 * call "set" instead of "push". Can we assume that there is only one
239 * context ever?
240 */
241 push_event_context (SP_TYPE_SELECT_CONTEXT, "/tools/select", SP_EVENT_CONTEXT_STATIC);
243 // display rect and zoom are now handled in sp_desktop_widget_realize()
245 Geom::Rect const d(Geom::Point(0.0, 0.0),
246 Geom::Point(sp_document_width(document), sp_document_height(document)));
248 SP_CTRLRECT(page)->setRectangle(d);
249 SP_CTRLRECT(page_border)->setRectangle(d);
251 /* the following sets the page shadow on the canvas
252 It was originally set to 5, which is really cheesy!
253 It now is an attribute in the document's namedview. If a value of
254 0 is used, then the constructor for a shadow is not initialized.
255 */
257 if ( namedview->pageshadow != 0 && namedview->showpageshadow ) {
258 SP_CTRLRECT(page_border)->setShadow(namedview->pageshadow, 0x3f3f3fff);
259 }
262 /* Connect event for page resize */
263 _doc2dt[5] = sp_document_height (document);
264 sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (drawing), _doc2dt);
266 _modified_connection = namedview->connectModified(sigc::bind<2>(sigc::ptr_fun(&_namedview_modified), this));
268 NRArenaItem *ai = sp_item_invoke_show (SP_ITEM (sp_document_root (document)),
269 SP_CANVAS_ARENA (drawing)->arena,
270 dkey,
271 SP_ITEM_SHOW_DISPLAY);
272 if (ai) {
273 nr_arena_item_add_child (SP_CANVAS_ARENA (drawing)->root, ai, NULL);
274 }
276 namedview->show(this);
277 /* Ugly hack */
278 activate_guides (true);
279 /* Ugly hack */
280 _namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this);
282 /* Set up notification of rebuilding the document, this allows
283 for saving object related settings in the document. */
284 _reconstruction_start_connection =
285 document->connectReconstructionStart(sigc::bind(sigc::ptr_fun(_reconstruction_start), this));
286 _reconstruction_finish_connection =
287 document->connectReconstructionFinish(sigc::bind(sigc::ptr_fun(_reconstruction_finish), this));
288 _reconstruction_old_layer_id = NULL;
290 // ?
291 // sp_active_desktop_set (desktop);
292 _inkscape = INKSCAPE;
294 _activate_connection = _activate_signal.connect(
295 sigc::bind(
296 sigc::ptr_fun(_onActivate),
297 this
298 )
299 );
300 _deactivate_connection = _deactivate_signal.connect(
301 sigc::bind(
302 sigc::ptr_fun(_onDeactivate),
303 this
304 )
305 );
307 _sel_modified_connection = selection->connectModified(
308 sigc::bind(
309 sigc::ptr_fun(&_onSelectionModified),
310 this
311 )
312 );
313 _sel_changed_connection = selection->connectChanged(
314 sigc::bind(
315 sigc::ptr_fun(&_onSelectionChanged),
316 this
317 )
318 );
321 /* setup LayerManager */
322 // (Setting up after the connections are all in place, as it may use some of them)
323 layer_manager = new Inkscape::LayerManager( this );
325 showGrids(namedview->grids_visible, false);
327 temporary_item_list = new Inkscape::Display::TemporaryItemList( this );
328 snapindicator = new Inkscape::Display::SnapIndicator ( this );
329 }
332 void SPDesktop::destroy()
333 {
334 if (snapindicator) {
335 delete snapindicator;
336 snapindicator = NULL;
337 }
338 if (temporary_item_list) {
339 delete temporary_item_list;
340 temporary_item_list = NULL;
341 }
343 if (selection) {
344 delete selection;
345 selection = NULL;
346 }
348 namedview->hide(this);
350 _activate_connection.disconnect();
351 _deactivate_connection.disconnect();
352 _sel_modified_connection.disconnect();
353 _sel_changed_connection.disconnect();
354 _modified_connection.disconnect();
355 _commit_connection.disconnect();
356 _reconstruction_start_connection.disconnect();
357 _reconstruction_finish_connection.disconnect();
359 g_signal_handlers_disconnect_by_func(G_OBJECT (acetate), (gpointer) G_CALLBACK(sp_desktop_root_handler), this);
360 g_signal_handlers_disconnect_by_func(G_OBJECT (main), (gpointer) G_CALLBACK(sp_desktop_root_handler), this);
361 g_signal_handlers_disconnect_by_func(G_OBJECT (drawing), (gpointer) G_CALLBACK(_arena_handler), this);
363 while (event_context) {
364 SPEventContext *ec = event_context;
365 event_context = ec->next;
366 sp_event_context_finish (ec);
367 g_object_unref (G_OBJECT (ec));
368 }
370 if (_layer_hierarchy) {
371 delete _layer_hierarchy;
372 // _layer_hierarchy = NULL; //this should be here, but commented to find other bug somewhere else.
373 }
375 if (layer_manager) {
376 delete layer_manager;
377 layer_manager = NULL;
378 }
380 if (_inkscape) {
381 _inkscape = NULL;
382 }
384 if (drawing) {
385 sp_item_invoke_hide (SP_ITEM (sp_document_root (doc())), dkey);
386 drawing = NULL;
387 }
389 delete _guides_message_context;
390 _guides_message_context = NULL;
392 g_list_free (zooms_past);
393 g_list_free (zooms_future);
394 }
396 SPDesktop::~SPDesktop() {}
398 //--------------------------------------------------------------------
399 /* Public methods */
402 /* These methods help for temporarily showing things on-canvas.
403 * The *only* valid use of the TemporaryItem* that you get from add_temporary_canvasitem
404 * is when you want to prematurely remove the item from the canvas, by calling
405 * desktop->remove_temporary_canvasitem(tempitem).
406 */
407 /** Note that lifetime is measured in milliseconds
408 * One should *not* keep a reference to the SPCanvasItem, the temporary item code will
409 * delete the object for you and the reference will become invalid without you knowing it.
410 * It is perfectly safe to ignore the returned pointer: the object is deleted by itself, so don't delete it elsewhere!
411 * The *only* valid use of the returned TemporaryItem* is as argument for SPDesktop::remove_temporary_canvasitem,
412 * because the object might be deleted already without you knowing it.
413 * move_to_bottom = true by default so the item does not interfere with handling of other items on the canvas like nodes.
414 */
415 Inkscape::Display::TemporaryItem *
416 SPDesktop::add_temporary_canvasitem (SPCanvasItem *item, guint lifetime, bool move_to_bottom)
417 {
418 if (move_to_bottom) {
419 sp_canvas_item_move_to_z(item, 0);
420 }
422 return temporary_item_list->add_item(item, lifetime);
423 }
425 /** It is perfectly safe to call this function while the object has already been deleted due to a timeout.
426 */
427 void
428 SPDesktop::remove_temporary_canvasitem (Inkscape::Display::TemporaryItem * tempitem)
429 {
430 // check for non-null temporary_item_list, because during destruction of desktop, some destructor might try to access this list!
431 if (tempitem && temporary_item_list) {
432 temporary_item_list->delete_item(tempitem);
433 }
434 }
436 void SPDesktop::_setDisplayMode(Inkscape::RenderMode mode) {
437 SP_CANVAS_ARENA (drawing)->arena->rendermode = mode;
438 canvas->rendermode = mode;
439 _display_mode = mode;
440 if (mode != Inkscape::RENDERMODE_OUTLINE) {
441 _saved_display_mode = _display_mode;
442 }
443 sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (main), _d2w); // redraw
444 _widget->setTitle(SP_DOCUMENT_NAME(sp_desktop_document(this)));
445 }
447 void SPDesktop::displayModeToggle() {
448 if (_display_mode == Inkscape::RENDERMODE_OUTLINE) {
449 _setDisplayMode(_saved_display_mode);
450 } else {
451 _setDisplayMode(Inkscape::RENDERMODE_OUTLINE);
452 }
453 }
455 /**
456 * Returns current root (=bottom) layer.
457 */
458 SPObject *SPDesktop::currentRoot() const
459 {
460 return _layer_hierarchy ? _layer_hierarchy->top() : NULL;
461 }
463 /**
464 * Returns current top layer.
465 */
466 SPObject *SPDesktop::currentLayer() const
467 {
468 return _layer_hierarchy ? _layer_hierarchy->bottom() : NULL;
469 }
471 /**
472 * Sets the current layer of the desktop.
473 *
474 * Make \a object the top layer.
475 */
476 void SPDesktop::setCurrentLayer(SPObject *object) {
477 g_return_if_fail(SP_IS_GROUP(object));
478 g_return_if_fail( currentRoot() == object || (currentRoot() && currentRoot()->isAncestorOf(object)) );
479 // printf("Set Layer to ID: %s\n", SP_OBJECT_ID(object));
480 _layer_hierarchy->setBottom(object);
481 }
483 void SPDesktop::toggleLayerSolo(SPObject *object) {
484 g_return_if_fail(SP_IS_GROUP(object));
485 g_return_if_fail( currentRoot() == object || (currentRoot() && currentRoot()->isAncestorOf(object)) );
487 bool othersShowing = false;
488 std::vector<SPObject*> layers;
489 for ( SPObject* obj = Inkscape::next_layer(currentRoot(), object); obj; obj = Inkscape::next_layer(currentRoot(), obj) ) {
490 layers.push_back(obj);
491 othersShowing |= !SP_ITEM(obj)->isHidden();
492 }
493 for ( SPObject* obj = Inkscape::previous_layer(currentRoot(), object); obj; obj = Inkscape::previous_layer(currentRoot(), obj) ) {
494 layers.push_back(obj);
495 othersShowing |= !SP_ITEM(obj)->isHidden();
496 }
499 if ( SP_ITEM(object)->isHidden() ) {
500 SP_ITEM(object)->setHidden(false);
501 }
503 for ( std::vector<SPObject*>::iterator it = layers.begin(); it != layers.end(); ++it ) {
504 SP_ITEM(*it)->setHidden(othersShowing);
505 }
506 }
508 /**
509 * Return layer that contains \a object.
510 */
511 SPObject *SPDesktop::layerForObject(SPObject *object) {
512 g_return_val_if_fail(object != NULL, NULL);
514 SPObject *root=currentRoot();
515 object = SP_OBJECT_PARENT(object);
516 while ( object && object != root && !isLayer(object) ) {
517 object = SP_OBJECT_PARENT(object);
518 }
519 return object;
520 }
522 /**
523 * True if object is a layer.
524 */
525 bool SPDesktop::isLayer(SPObject *object) const {
526 return ( SP_IS_GROUP(object)
527 && ( SP_GROUP(object)->effectiveLayerMode(this->dkey)
528 == SPGroup::LAYER ) );
529 }
531 /**
532 * True if desktop viewport fully contains \a item's bbox.
533 */
534 bool SPDesktop::isWithinViewport (SPItem *item) const
535 {
536 Geom::Rect const viewport = get_display_area();
537 Geom::OptRect const bbox = sp_item_bbox_desktop(item);
538 if (bbox) {
539 return viewport.contains(*bbox);
540 } else {
541 return true;
542 }
543 }
545 ///
546 bool SPDesktop::itemIsHidden(SPItem const *item) const {
547 return item->isHidden(this->dkey);
548 }
550 /**
551 * Set activate property of desktop; emit signal if changed.
552 */
553 void
554 SPDesktop::set_active (bool new_active)
555 {
556 if (new_active != _active) {
557 _active = new_active;
558 if (new_active) {
559 _activate_signal.emit();
560 } else {
561 _deactivate_signal.emit();
562 }
563 }
564 }
566 /**
567 * Set activate status of current desktop's named view.
568 */
569 void
570 SPDesktop::activate_guides(bool activate)
571 {
572 guides_active = activate;
573 namedview->activateGuides(this, activate);
574 }
576 /**
577 * Make desktop switch documents.
578 */
579 void
580 SPDesktop::change_document (SPDocument *theDocument)
581 {
582 g_return_if_fail (theDocument != NULL);
584 /* unselect everything before switching documents */
585 selection->clear();
587 setDocument (theDocument);
589 /* update the rulers, connect the desktop widget's signal to the new namedview etc.
590 (this can probably be done in a better way) */
591 Gtk::Window *parent = this->getToplevel();
592 g_assert(parent != NULL);
593 SPDesktopWidget *dtw = (SPDesktopWidget *) parent->get_data("desktopwidget");
594 if (dtw) dtw->desktop = this;
595 sp_desktop_widget_update_namedview(dtw);
597 _namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this);
598 _document_replaced_signal.emit (this, theDocument);
599 }
601 /**
602 * Make desktop switch event contexts.
603 */
604 void
605 SPDesktop::set_event_context (GtkType type, const gchar *config)
606 {
607 SPEventContext *ec;
608 while (event_context) {
609 ec = event_context;
610 sp_event_context_deactivate (ec);
611 event_context = ec->next;
612 sp_event_context_finish (ec);
613 g_object_unref (G_OBJECT (ec));
614 }
616 ec = sp_event_context_new (type, this, config, SP_EVENT_CONTEXT_STATIC);
617 ec->next = event_context;
618 event_context = ec;
619 sp_event_context_activate (ec);
620 _event_context_changed_signal.emit (this, ec);
621 }
623 /**
624 * Push event context onto desktop's context stack.
625 */
626 void
627 SPDesktop::push_event_context (GtkType type, const gchar *config, unsigned int key)
628 {
629 SPEventContext *ref, *ec;
631 if (event_context && event_context->key == key) return;
632 ref = event_context;
633 while (ref && ref->next && ref->next->key != key) ref = ref->next;
634 if (ref && ref->next) {
635 ec = ref->next;
636 ref->next = ec->next;
637 sp_event_context_finish (ec);
638 g_object_unref (G_OBJECT (ec));
639 }
641 if (event_context) sp_event_context_deactivate (event_context);
642 ec = sp_event_context_new (type, this, config, key);
643 ec->next = event_context;
644 event_context = ec;
645 sp_event_context_activate (ec);
646 _event_context_changed_signal.emit (this, ec);
647 }
649 /**
650 * Sets the coordinate status to a given point
651 */
652 void
653 SPDesktop::set_coordinate_status (Geom::Point p) {
654 _widget->setCoordinateStatus(p);
655 }
657 /**
658 * \see sp_document_item_from_list_at_point_bottom()
659 */
660 SPItem *
661 SPDesktop::item_from_list_at_point_bottom (const GSList *list, Geom::Point const p) const
662 {
663 g_return_val_if_fail (doc() != NULL, NULL);
664 return sp_document_item_from_list_at_point_bottom (dkey, SP_GROUP (doc()->root), list, p);
665 }
667 /**
668 * \see sp_document_item_at_point()
669 */
670 SPItem *
671 SPDesktop::item_at_point (Geom::Point const p, bool into_groups, SPItem *upto) const
672 {
673 g_return_val_if_fail (doc() != NULL, NULL);
674 return sp_document_item_at_point (doc(), dkey, p, into_groups, upto);
675 }
677 /**
678 * \see sp_document_group_at_point()
679 */
680 SPItem *
681 SPDesktop::group_at_point (Geom::Point const p) const
682 {
683 g_return_val_if_fail (doc() != NULL, NULL);
684 return sp_document_group_at_point (doc(), dkey, p);
685 }
687 /**
688 * \brief Returns the mouse point in document coordinates; if mouse is
689 * outside the canvas, returns the center of canvas viewpoint
690 */
691 Geom::Point
692 SPDesktop::point() const
693 {
694 Geom::Point p = _widget->getPointer();
695 Geom::Point pw = sp_canvas_window_to_world (canvas, p);
696 p = w2d(pw);
698 Geom::Rect const r = canvas->getViewbox();
700 Geom::Point r0 = w2d(r.min());
701 Geom::Point r1 = w2d(r.max());
703 if (p[Geom::X] >= r0[Geom::X] &&
704 p[Geom::X] <= r1[Geom::X] &&
705 p[Geom::Y] >= r1[Geom::Y] &&
706 p[Geom::Y] <= r0[Geom::Y])
707 {
708 return p;
709 } else {
710 return (r0 + r1) / 2;
711 }
712 }
714 /**
715 * Put current zoom data in history list.
716 */
717 void
718 SPDesktop::push_current_zoom (GList **history)
719 {
720 Geom::Rect const area = get_display_area();
722 NRRect *old_zoom = g_new(NRRect, 1);
723 old_zoom->x0 = area.min()[Geom::X];
724 old_zoom->x1 = area.max()[Geom::X];
725 old_zoom->y0 = area.min()[Geom::Y];
726 old_zoom->y1 = area.max()[Geom::Y];
727 if ( *history == NULL
728 || !( ( ((NRRect *) ((*history)->data))->x0 == old_zoom->x0 ) &&
729 ( ((NRRect *) ((*history)->data))->x1 == old_zoom->x1 ) &&
730 ( ((NRRect *) ((*history)->data))->y0 == old_zoom->y0 ) &&
731 ( ((NRRect *) ((*history)->data))->y1 == old_zoom->y1 ) ) )
732 {
733 *history = g_list_prepend (*history, old_zoom);
734 }
735 }
737 /**
738 * Set viewbox (x0, x1, y0 and y1 are in document pixels. Border is in screen pixels).
739 */
740 void
741 SPDesktop::set_display_area (double x0, double y0, double x1, double y1, double border, bool log)
742 {
743 g_assert(_widget);
745 // save the zoom
746 if (log) {
747 push_current_zoom(&zooms_past);
748 // if we do a logged zoom, our zoom-forward list is invalidated, so delete it
749 g_list_free (zooms_future);
750 zooms_future = NULL;
751 }
753 double const cx = 0.5 * (x0 + x1);
754 double const cy = 0.5 * (y0 + y1);
756 // FIXME: This 2geom idiom doesn't allow us to declare dbox const
757 Geom::Rect viewbox = canvas->getViewbox();
758 viewbox.expandBy(-border);
760 double scale = _d2w.descrim();
761 double newscale;
762 if (((x1 - x0) * viewbox.dimensions()[Geom::Y]) > ((y1 - y0) * viewbox.dimensions()[Geom::X])) {
763 newscale = viewbox.dimensions()[Geom::X] / (x1 - x0);
764 } else {
765 newscale = viewbox.dimensions()[Geom::Y] / (y1 - y0);
766 }
768 newscale = CLAMP(newscale, SP_DESKTOP_ZOOM_MIN, SP_DESKTOP_ZOOM_MAX); // unit: 'screen pixels' per 'document pixels'
770 int clear = FALSE;
771 if (!NR_DF_TEST_CLOSE (newscale, scale, 1e-4 * scale)) {
772 /* Set zoom factors */
773 _d2w = Geom::Scale(newscale, -newscale);
774 _w2d = Geom::Scale(1/newscale, 1/-newscale);
775 sp_canvas_item_affine_absolute(SP_CANVAS_ITEM(main), _d2w);
776 clear = TRUE;
777 }
779 /* Calculate top left corner (in document pixels) */
780 x0 = cx - 0.5 * viewbox.dimensions()[Geom::X] / newscale;
781 y1 = cy + 0.5 * viewbox.dimensions()[Geom::Y] / newscale;
783 /* Scroll */
784 sp_canvas_scroll_to (canvas, x0 * newscale - border, y1 * -newscale - border, clear);
786 /* update perspective lines if we are in the 3D box tool (so that infinite ones are shown correctly) */
787 sp_box3d_context_update_lines(event_context);
789 _widget->updateRulers();
790 _widget->updateScrollbars(_d2w.descrim());
791 _widget->updateZoom();
792 }
794 void SPDesktop::set_display_area(Geom::Rect const &a, Geom::Coord b, bool log)
795 {
796 set_display_area(a.min()[Geom::X], a.min()[Geom::Y], a.max()[Geom::X], a.max()[Geom::Y], b, log);
797 }
799 /**
800 * Return viewbox dimensions.
801 */
802 Geom::Rect SPDesktop::get_display_area() const
803 {
804 Geom::Rect const viewbox = canvas->getViewbox();
806 double const scale = _d2w[0];
808 return Geom::Rect(Geom::Point(viewbox.min()[Geom::X] / scale, viewbox.max()[Geom::Y] / -scale),
809 Geom::Point(viewbox.max()[Geom::X] / scale, viewbox.min()[Geom::Y] / -scale));
810 }
812 /**
813 * Revert back to previous zoom if possible.
814 */
815 void
816 SPDesktop::prev_zoom()
817 {
818 if (zooms_past == NULL) {
819 messageStack()->flash(Inkscape::WARNING_MESSAGE, _("No previous zoom."));
820 return;
821 }
823 // push current zoom into forward zooms list
824 push_current_zoom (&zooms_future);
826 // restore previous zoom
827 set_display_area (((NRRect *) zooms_past->data)->x0,
828 ((NRRect *) zooms_past->data)->y0,
829 ((NRRect *) zooms_past->data)->x1,
830 ((NRRect *) zooms_past->data)->y1,
831 0, false);
833 // remove the just-added zoom from the past zooms list
834 zooms_past = g_list_remove (zooms_past, ((NRRect *) zooms_past->data));
835 }
837 /**
838 * Set zoom to next in list.
839 */
840 void
841 SPDesktop::next_zoom()
842 {
843 if (zooms_future == NULL) {
844 this->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("No next zoom."));
845 return;
846 }
848 // push current zoom into past zooms list
849 push_current_zoom (&zooms_past);
851 // restore next zoom
852 set_display_area (((NRRect *) zooms_future->data)->x0,
853 ((NRRect *) zooms_future->data)->y0,
854 ((NRRect *) zooms_future->data)->x1,
855 ((NRRect *) zooms_future->data)->y1,
856 0, false);
858 // remove the just-used zoom from the zooms_future list
859 zooms_future = g_list_remove (zooms_future, ((NRRect *) zooms_future->data));
860 }
862 #include "tools-switch.h"
863 #include "node-context.h"
864 #include "shape-editor.h"
865 #include "nodepath.h"
867 /** \brief Performs a quick zoom into what the user is working on
868 \param enable Whether we're going in or out of quick zoom
870 */
871 void
872 SPDesktop::zoom_quick (bool enable)
873 {
874 if (enable == _quick_zoom_enabled) {
875 return;
876 }
878 if (enable == true) {
879 _quick_zoom_stored_area = get_display_area();
880 bool zoomed = false;
882 if (!zoomed) {
883 SPItem * singleItem = selection->singleItem();
884 if (singleItem != NULL && tools_isactive(this, TOOLS_NODES)) {
886 Inkscape::NodePath::Path * nodepath = event_context->shape_editor->get_nodepath();
887 // printf("I've got a nodepath, crazy\n");
889 if (nodepath) {
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 }
937 }
939 if (!zoomed) {
940 Geom::OptRect const d = selection->bounds();
941 if (d && d->area() * 2.0 < _quick_zoom_stored_area.area()) {
942 set_display_area(*d, 10);
943 zoomed = true;
944 }
945 }
947 if (!zoomed) {
948 zoom_relative(_quick_zoom_stored_area.midpoint()[Geom::X], _quick_zoom_stored_area.midpoint()[Geom::Y], 2.0);
949 zoomed = true;
950 }
951 } else {
952 set_display_area(_quick_zoom_stored_area, 0);
953 }
955 _quick_zoom_enabled = enable;
956 return;
957 }
959 /**
960 * Zoom to point with absolute zoom factor.
961 */
962 void
963 SPDesktop::zoom_absolute_keep_point (double cx, double cy, double px, double py, double zoom)
964 {
965 zoom = CLAMP (zoom, SP_DESKTOP_ZOOM_MIN, SP_DESKTOP_ZOOM_MAX);
967 // maximum or minimum zoom reached, but there's no exact equality because of rounding errors;
968 // this check prevents "sliding" when trying to zoom in at maximum zoom;
969 /// \todo someone please fix calculations properly and remove this hack
970 if (fabs(_d2w.descrim() - zoom) < 0.0001*zoom && (fabs(SP_DESKTOP_ZOOM_MAX - zoom) < 0.01 || fabs(SP_DESKTOP_ZOOM_MIN - zoom) < 0.000001))
971 return;
973 Geom::Rect const viewbox = canvas->getViewbox();
975 double const width2 = viewbox.dimensions()[Geom::X] / zoom;
976 double const height2 = viewbox.dimensions()[Geom::Y] / zoom;
978 set_display_area(cx - px * width2,
979 cy - py * height2,
980 cx + (1 - px) * width2,
981 cy + (1 - py) * height2,
982 0.0);
983 }
985 /**
986 * Zoom to center with absolute zoom factor.
987 */
988 void
989 SPDesktop::zoom_absolute (double cx, double cy, double zoom)
990 {
991 zoom_absolute_keep_point (cx, cy, 0.5, 0.5, zoom);
992 }
994 /**
995 * Zoom to point with relative zoom factor.
996 */
997 void
998 SPDesktop::zoom_relative_keep_point (double cx, double cy, double zoom)
999 {
1000 Geom::Rect const area = get_display_area();
1002 if (cx < area.min()[Geom::X]) {
1003 cx = area.min()[Geom::X];
1004 }
1005 if (cx > area.max()[Geom::X]) {
1006 cx = area.max()[Geom::X];
1007 }
1008 if (cy < area.min()[Geom::Y]) {
1009 cy = area.min()[Geom::Y];
1010 }
1011 if (cy > area.max()[Geom::Y]) {
1012 cy = area.max()[Geom::Y];
1013 }
1015 gdouble const scale = _d2w.descrim() * zoom;
1016 double const px = (cx - area.min()[Geom::X]) / area.dimensions()[Geom::X];
1017 double const py = (cy - area.min()[Geom::Y]) / area.dimensions()[Geom::Y];
1019 zoom_absolute_keep_point(cx, cy, px, py, scale);
1020 }
1022 /**
1023 * Zoom to center with relative zoom factor.
1024 */
1025 void
1026 SPDesktop::zoom_relative (double cx, double cy, double zoom)
1027 {
1028 gdouble scale = _d2w.descrim() * zoom;
1029 zoom_absolute (cx, cy, scale);
1030 }
1032 /**
1033 * Set display area to origin and current document dimensions.
1034 */
1035 void
1036 SPDesktop::zoom_page()
1037 {
1038 Geom::Rect d(Geom::Point(0, 0),
1039 Geom::Point(sp_document_width(doc()), sp_document_height(doc())));
1041 if (d.minExtent() < 1.0) {
1042 return;
1043 }
1045 set_display_area(d, 10);
1046 }
1048 /**
1049 * Set display area to current document width.
1050 */
1051 void
1052 SPDesktop::zoom_page_width()
1053 {
1054 Geom::Rect const a = get_display_area();
1056 if (sp_document_width(doc()) < 1.0) {
1057 return;
1058 }
1060 Geom::Rect d(Geom::Point(0, a.midpoint()[Geom::Y]),
1061 Geom::Point(sp_document_width(doc()), a.midpoint()[Geom::Y]));
1063 set_display_area(d, 10);
1064 }
1066 /**
1067 * Zoom to selection.
1068 */
1069 void
1070 SPDesktop::zoom_selection()
1071 {
1072 Geom::OptRect const d = selection->bounds();
1074 if ( !d || d->minExtent() < 0.1 ) {
1075 return;
1076 }
1078 set_display_area(*d, 10);
1079 }
1081 /**
1082 * Tell widget to let zoom widget grab keyboard focus.
1083 */
1084 void
1085 SPDesktop::zoom_grab_focus()
1086 {
1087 _widget->letZoomGrabFocus();
1088 }
1090 /**
1091 * Zoom to whole drawing.
1092 */
1093 void
1094 SPDesktop::zoom_drawing()
1095 {
1096 g_return_if_fail (doc() != NULL);
1097 SPItem *docitem = SP_ITEM (sp_document_root (doc()));
1098 g_return_if_fail (docitem != NULL);
1100 Geom::OptRect d = sp_item_bbox_desktop(docitem);
1102 /* Note that the second condition here indicates that
1103 ** there are no items in the drawing.
1104 */
1105 if ( !d || d->minExtent() < 0.1 ) {
1106 return;
1107 }
1109 set_display_area(*d, 10);
1110 }
1112 /**
1113 * Scroll canvas by specific coordinate amount in svg coordinates.
1114 */
1115 void
1116 SPDesktop::scroll_world_in_svg_coords (double dx, double dy, bool is_scrolling)
1117 {
1118 double scale = _d2w.descrim();
1119 scroll_world(dx*scale, dy*scale, is_scrolling);
1120 }
1122 /**
1123 * Scroll canvas by specific coordinate amount.
1124 */
1125 void
1126 SPDesktop::scroll_world (double dx, double dy, bool is_scrolling)
1127 {
1128 g_assert(_widget);
1130 Geom::Rect const viewbox = canvas->getViewbox();
1132 sp_canvas_scroll_to(canvas, viewbox.min()[Geom::X] - dx, viewbox.min()[Geom::Y] - dy, FALSE, is_scrolling);
1134 /* update perspective lines if we are in the 3D box tool (so that infinite ones are shown correctly) */
1135 sp_box3d_context_update_lines(event_context);
1137 _widget->updateRulers();
1138 _widget->updateScrollbars(_d2w.descrim());
1139 }
1141 bool
1142 SPDesktop::scroll_to_point (Geom::Point const &p, gdouble autoscrollspeed)
1143 {
1144 using Geom::X;
1145 using Geom::Y;
1147 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1148 gdouble autoscrolldistance = (gdouble) prefs->getIntLimited("/options/autoscrolldistance/value", 0, -1000, 10000);
1150 // autoscrolldistance is in screen pixels, but the display area is in document units
1151 autoscrolldistance /= _d2w.descrim();
1152 // FIXME: This 2geom idiom doesn't allow us to declare dbox const
1153 Geom::Rect dbox = get_display_area();
1154 dbox.expandBy(-autoscrolldistance);
1156 if (!(p[X] > dbox.min()[X] && p[X] < dbox.max()[X]) ||
1157 !(p[Y] > dbox.min()[Y] && p[Y] < dbox.max()[Y]) ) {
1159 Geom::Point const s_w( p * (Geom::Matrix)_d2w );
1161 gdouble x_to;
1162 if (p[X] < dbox.min()[X])
1163 x_to = dbox.min()[X];
1164 else if (p[X] > dbox.max()[X])
1165 x_to = dbox.max()[X];
1166 else
1167 x_to = p[X];
1169 gdouble y_to;
1170 if (p[Y] < dbox.min()[Y])
1171 y_to = dbox.min()[Y];
1172 else if (p[Y] > dbox.max()[Y])
1173 y_to = dbox.max()[Y];
1174 else
1175 y_to = p[Y];
1177 Geom::Point const d_dt(x_to, y_to);
1178 Geom::Point const d_w( d_dt * _d2w );
1179 Geom::Point const moved_w( d_w - s_w );
1181 if (autoscrollspeed == 0)
1182 autoscrollspeed = prefs->getDoubleLimited("/options/autoscrollspeed/value", 1, 0, 10);
1184 if (autoscrollspeed != 0)
1185 scroll_world (autoscrollspeed * moved_w);
1187 return true;
1188 }
1189 return false;
1190 }
1192 bool
1193 SPDesktop::is_iconified()
1194 {
1195 return 0!=(window_state & GDK_WINDOW_STATE_ICONIFIED);
1196 }
1198 void
1199 SPDesktop::iconify()
1200 {
1201 _widget->setIconified();
1202 }
1204 bool
1205 SPDesktop::is_maximized()
1206 {
1207 return 0!=(window_state & GDK_WINDOW_STATE_MAXIMIZED);
1208 }
1210 void
1211 SPDesktop::maximize()
1212 {
1213 _widget->setMaximized();
1214 }
1216 bool
1217 SPDesktop::is_fullscreen()
1218 {
1219 return 0!=(window_state & GDK_WINDOW_STATE_FULLSCREEN);
1220 }
1222 void
1223 SPDesktop::fullscreen()
1224 {
1225 _widget->setFullscreen();
1226 }
1228 /** \brief Checks to see if the user is working in focused mode
1230 Returns the value of \c _focusMode
1231 */
1232 bool
1233 SPDesktop::is_focusMode()
1234 {
1235 return _focusMode;
1236 }
1238 /** \brief Changes whether the user is in focus mode or not
1239 \param mode Which mode the view should be in
1241 */
1242 void
1243 SPDesktop::focusMode (bool mode)
1244 {
1245 if (mode == _focusMode) { return; }
1247 _focusMode = mode;
1249 layoutWidget();
1250 //sp_desktop_widget_layout(SPDesktopWidget);
1252 return;
1253 }
1255 void
1256 SPDesktop::getWindowGeometry (gint &x, gint &y, gint &w, gint &h)
1257 {
1258 _widget->getGeometry (x, y, w, h);
1259 }
1261 void
1262 SPDesktop::setWindowPosition (Geom::Point p)
1263 {
1264 _widget->setPosition (p);
1265 }
1267 void
1268 SPDesktop::setWindowSize (gint w, gint h)
1269 {
1270 _widget->setSize (w, h);
1271 }
1273 void
1274 SPDesktop::setWindowTransient (void *p, int transient_policy)
1275 {
1276 _widget->setTransient (p, transient_policy);
1277 }
1279 Gtk::Window*
1280 SPDesktop::getToplevel( )
1281 {
1282 return _widget->getWindow();
1283 }
1285 void
1286 SPDesktop::presentWindow()
1287 {
1288 _widget->present();
1289 }
1291 bool
1292 SPDesktop::warnDialog (gchar *text)
1293 {
1294 return _widget->warnDialog (text);
1295 }
1297 void
1298 SPDesktop::toggleRulers()
1299 {
1300 _widget->toggleRulers();
1301 }
1303 void
1304 SPDesktop::toggleScrollbars()
1305 {
1306 _widget->toggleScrollbars();
1307 }
1309 void
1310 SPDesktop::layoutWidget()
1311 {
1312 _widget->layout();
1313 }
1315 void
1316 SPDesktop::destroyWidget()
1317 {
1318 _widget->destroy();
1319 }
1321 bool
1322 SPDesktop::shutdown()
1323 {
1324 return _widget->shutdown();
1325 }
1327 bool SPDesktop::onDeleteUI (GdkEventAny*)
1328 {
1329 if(shutdown())
1330 return true;
1332 destroyWidget();
1333 return false;
1334 }
1336 /**
1337 * onWindowStateEvent
1338 *
1339 * Called when the window changes its maximize/fullscreen/iconify/pinned state.
1340 * Since GTK doesn't have a way to query this state information directly, we
1341 * record it for the desktop here, and also possibly trigger a layout.
1342 */
1343 bool
1344 SPDesktop::onWindowStateEvent (GdkEventWindowState* event)
1345 {
1346 // Record the desktop window's state
1347 window_state = event->new_window_state;
1349 // Layout may differ depending on full-screen mode or not
1350 GdkWindowState changed = event->changed_mask;
1351 if (changed & (GDK_WINDOW_STATE_FULLSCREEN|GDK_WINDOW_STATE_MAXIMIZED)) {
1352 layoutWidget();
1353 }
1355 return false;
1356 }
1358 void
1359 SPDesktop::setToolboxFocusTo (gchar const *label)
1360 {
1361 _widget->setToolboxFocusTo (label);
1362 }
1364 void
1365 SPDesktop::setToolboxAdjustmentValue (gchar const* id, double val)
1366 {
1367 _widget->setToolboxAdjustmentValue (id, val);
1368 }
1370 void
1371 SPDesktop::setToolboxSelectOneValue (gchar const* id, gint val)
1372 {
1373 _widget->setToolboxSelectOneValue (id, val);
1374 }
1376 bool
1377 SPDesktop::isToolboxButtonActive (gchar const *id)
1378 {
1379 return _widget->isToolboxButtonActive (id);
1380 }
1382 void
1383 SPDesktop::emitToolSubselectionChanged(gpointer data)
1384 {
1385 _tool_subselection_changed.emit(data);
1386 inkscape_subselection_changed (this);
1387 }
1389 void
1390 SPDesktop::updateNow()
1391 {
1392 sp_canvas_update_now(canvas);
1393 }
1395 void
1396 SPDesktop::enableInteraction()
1397 {
1398 _widget->enableInteraction();
1399 }
1401 void SPDesktop::disableInteraction()
1402 {
1403 _widget->disableInteraction();
1404 }
1406 void SPDesktop::setWaitingCursor()
1407 {
1408 GdkCursor *waiting = gdk_cursor_new(GDK_WATCH);
1409 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(this))->window, waiting);
1410 gdk_cursor_unref(waiting);
1411 // GDK needs the flush for the cursor change to take effect
1412 gdk_flush();
1413 waiting_cursor = true;
1414 }
1416 void SPDesktop::clearWaitingCursor()
1417 {
1418 if (waiting_cursor)
1419 sp_event_context_update_cursor(sp_desktop_event_context(this));
1420 }
1422 void SPDesktop::toggleColorProfAdjust()
1423 {
1424 _widget->toggleColorProfAdjust();
1425 }
1427 void SPDesktop::toggleGrids()
1428 {
1429 if (namedview->grids) {
1430 if(gridgroup) {
1431 showGrids(!grids_visible);
1432 }
1433 } else {
1434 //there is no grid present at the moment. add a rectangular grid and make it visible
1435 Inkscape::XML::Node *repr = SP_OBJECT_REPR(namedview);
1436 Inkscape::CanvasGrid::writeNewGridToRepr(repr, sp_desktop_document(this), Inkscape::GRID_RECTANGULAR);
1437 showGrids(true);
1438 }
1439 }
1441 void SPDesktop::showGrids(bool show, bool dirty_document)
1442 {
1443 grids_visible = show;
1444 sp_namedview_show_grids(namedview, grids_visible, dirty_document);
1445 if (show) {
1446 sp_canvas_item_show(SP_CANVAS_ITEM(gridgroup));
1447 } else {
1448 sp_canvas_item_hide(SP_CANVAS_ITEM(gridgroup));
1449 }
1450 }
1452 void SPDesktop::toggleSnapGlobal()
1453 {
1454 bool v = namedview->snap_manager.snapprefs.getSnapEnabledGlobally();
1455 Inkscape::XML::Node *repr = SP_OBJECT_REPR(namedview);
1456 sp_repr_set_boolean(repr, "inkscape:snap-global", !v);
1457 }
1459 //----------------------------------------------------------------------
1460 // Callback implementations. The virtual ones are connected by the view.
1462 void
1463 SPDesktop::onPositionSet (double x, double y)
1464 {
1465 _widget->viewSetPosition (Geom::Point(x,y));
1466 }
1468 void
1469 SPDesktop::onResized (double /*x*/, double /*y*/)
1470 {
1471 // Nothing called here
1472 }
1474 /**
1475 * Redraw callback; queues Gtk redraw; connected by View.
1476 */
1477 void
1478 SPDesktop::onRedrawRequested ()
1479 {
1480 if (main) {
1481 _widget->requestCanvasUpdate();
1482 }
1483 }
1485 void
1486 SPDesktop::updateCanvasNow()
1487 {
1488 _widget->requestCanvasUpdateAndWait();
1489 }
1491 /**
1492 * Associate document with desktop.
1493 */
1494 void
1495 SPDesktop::setDocument (SPDocument *doc)
1496 {
1497 if (this->doc() && doc) {
1498 namedview->hide(this);
1499 sp_item_invoke_hide (SP_ITEM (sp_document_root (this->doc())), dkey);
1500 }
1502 if (_layer_hierarchy) {
1503 _layer_hierarchy->clear();
1504 delete _layer_hierarchy;
1505 }
1506 _layer_hierarchy = new Inkscape::ObjectHierarchy(NULL);
1507 _layer_hierarchy->connectAdded(sigc::bind(sigc::ptr_fun(_layer_activated), this));
1508 _layer_hierarchy->connectRemoved(sigc::bind(sigc::ptr_fun(_layer_deactivated), this));
1509 _layer_hierarchy->connectChanged(sigc::bind(sigc::ptr_fun(_layer_hierarchy_changed), this));
1510 _layer_hierarchy->setTop(SP_DOCUMENT_ROOT(doc));
1512 /* setup EventLog */
1513 event_log = new Inkscape::EventLog(doc);
1514 doc->addUndoObserver(*event_log);
1516 _commit_connection.disconnect();
1517 _commit_connection = doc->connectCommit(sigc::mem_fun(*this, &SPDesktop::updateNow));
1519 /// \todo fixme: This condition exists to make sure the code
1520 /// inside is NOT called on initialization, only on replacement. But there
1521 /// are surely more safe methods to accomplish this.
1522 // TODO since the comment had reversed logic, check the intent of this block of code:
1523 if (drawing) {
1524 NRArenaItem *ai = 0;
1526 namedview = sp_document_namedview (doc, NULL);
1527 _modified_connection = namedview->connectModified(sigc::bind<2>(sigc::ptr_fun(&_namedview_modified), this));
1528 number = namedview->getViewCount();
1530 ai = sp_item_invoke_show (SP_ITEM (sp_document_root (doc)),
1531 SP_CANVAS_ARENA (drawing)->arena,
1532 dkey,
1533 SP_ITEM_SHOW_DISPLAY);
1534 if (ai) {
1535 nr_arena_item_add_child (SP_CANVAS_ARENA (drawing)->root, ai, NULL);
1536 }
1537 namedview->show(this);
1538 /* Ugly hack */
1539 activate_guides (true);
1540 /* Ugly hack */
1541 _namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this);
1542 }
1544 _document_replaced_signal.emit (this, doc);
1546 View::setDocument (doc);
1547 }
1549 void
1550 SPDesktop::onStatusMessage
1551 (Inkscape::MessageType type, gchar const *message)
1552 {
1553 if (_widget) {
1554 _widget->setMessage(type, message);
1555 }
1556 }
1558 void
1559 SPDesktop::onDocumentURISet (gchar const* uri)
1560 {
1561 _widget->setTitle(uri);
1562 }
1564 /**
1565 * Resized callback.
1566 */
1567 void
1568 SPDesktop::onDocumentResized (gdouble width, gdouble height)
1569 {
1570 _doc2dt[5] = height;
1571 sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (drawing), _doc2dt);
1572 Geom::Rect const a(Geom::Point(0, 0), Geom::Point(width, height));
1573 SP_CTRLRECT(page)->setRectangle(a);
1574 SP_CTRLRECT(page_border)->setRectangle(a);
1575 }
1578 void
1579 SPDesktop::_onActivate (SPDesktop* dt)
1580 {
1581 if (!dt->_widget) return;
1582 dt->_widget->activateDesktop();
1583 }
1585 void
1586 SPDesktop::_onDeactivate (SPDesktop* dt)
1587 {
1588 if (!dt->_widget) return;
1589 dt->_widget->deactivateDesktop();
1590 }
1592 void
1593 SPDesktop::_onSelectionModified
1594 (Inkscape::Selection */*selection*/, guint /*flags*/, SPDesktop *dt)
1595 {
1596 if (!dt->_widget) return;
1597 dt->_widget->updateScrollbars (dt->_d2w.descrim());
1598 }
1600 static void
1601 _onSelectionChanged
1602 (Inkscape::Selection *selection, SPDesktop *desktop)
1603 {
1604 /** \todo
1605 * only change the layer for single selections, or what?
1606 * This seems reasonable -- for multiple selections there can be many
1607 * different layers involved.
1608 */
1609 SPItem *item=selection->singleItem();
1610 if (item) {
1611 SPObject *layer=desktop->layerForObject(item);
1612 if ( layer && layer != desktop->currentLayer() ) {
1613 desktop->setCurrentLayer(layer);
1614 }
1615 }
1616 }
1618 /**
1619 * Calls event handler of current event context.
1620 * \param arena Unused
1621 * \todo fixme
1622 */
1623 static gint
1624 _arena_handler (SPCanvasArena */*arena*/, NRArenaItem *ai, GdkEvent *event, SPDesktop *desktop)
1625 {
1626 if (ai) {
1627 SPItem *spi = (SPItem*)NR_ARENA_ITEM_GET_DATA (ai);
1628 return sp_event_context_item_handler (desktop->event_context, spi, event);
1629 } else {
1630 return sp_event_context_root_handler (desktop->event_context, event);
1631 }
1632 }
1634 static void
1635 _layer_activated(SPObject *layer, SPDesktop *desktop) {
1636 g_return_if_fail(SP_IS_GROUP(layer));
1637 SP_GROUP(layer)->setLayerDisplayMode(desktop->dkey, SPGroup::LAYER);
1638 }
1640 /// Callback
1641 static void
1642 _layer_deactivated(SPObject *layer, SPDesktop *desktop) {
1643 g_return_if_fail(SP_IS_GROUP(layer));
1644 SP_GROUP(layer)->setLayerDisplayMode(desktop->dkey, SPGroup::GROUP);
1645 }
1647 /// Callback
1648 static void
1649 _layer_hierarchy_changed(SPObject */*top*/, SPObject *bottom,
1650 SPDesktop *desktop)
1651 {
1652 desktop->_layer_changed_signal.emit (bottom);
1653 }
1655 /// Called when document is starting to be rebuilt.
1656 static void
1657 _reconstruction_start (SPDesktop * desktop)
1658 {
1659 // printf("Desktop, starting reconstruction\n");
1660 desktop->_reconstruction_old_layer_id = g_strdup(SP_OBJECT_ID(desktop->currentLayer()));
1661 desktop->_layer_hierarchy->setBottom(desktop->currentRoot());
1663 /*
1664 GSList const * selection_objs = desktop->selection->list();
1665 for (; selection_objs != NULL; selection_objs = selection_objs->next) {
1667 }
1668 */
1669 desktop->selection->clear();
1671 // printf("Desktop, starting reconstruction end\n");
1672 }
1674 /// Called when document rebuild is finished.
1675 static void
1676 _reconstruction_finish (SPDesktop * desktop)
1677 {
1678 // printf("Desktop, finishing reconstruction\n");
1679 if (desktop->_reconstruction_old_layer_id == NULL)
1680 return;
1682 SPObject * newLayer = SP_OBJECT_DOCUMENT(desktop->namedview)->getObjectById(desktop->_reconstruction_old_layer_id);
1683 if (newLayer != NULL)
1684 desktop->setCurrentLayer(newLayer);
1686 g_free(desktop->_reconstruction_old_layer_id);
1687 desktop->_reconstruction_old_layer_id = NULL;
1688 // printf("Desktop, finishing reconstruction end\n");
1689 return;
1690 }
1692 /**
1693 * Namedview_modified callback.
1694 */
1695 static void
1696 _namedview_modified (SPObject *obj, guint flags, SPDesktop *desktop)
1697 {
1698 SPNamedView *nv=SP_NAMEDVIEW(obj);
1700 if (flags & SP_OBJECT_MODIFIED_FLAG) {
1702 /* Show/hide page background */
1703 if (nv->pagecolor & 0xff) {
1704 sp_canvas_item_show (desktop->table);
1705 ((CtrlRect *) desktop->table)->setColor(0x00000000, true, nv->pagecolor);
1706 sp_canvas_item_move_to_z (desktop->table, 0);
1707 } else {
1708 sp_canvas_item_hide (desktop->table);
1709 }
1711 /* Show/hide page border */
1712 if (nv->showborder) {
1713 // show
1714 sp_canvas_item_show (desktop->page_border);
1715 // set color and shadow
1716 ((CtrlRect *) desktop->page_border)->setColor(nv->bordercolor, false, 0x00000000);
1717 if (nv->pageshadow) {
1718 ((CtrlRect *) desktop->page_border)->setShadow(nv->pageshadow, nv->bordercolor);
1719 }
1720 // place in the z-order stack
1721 if (nv->borderlayer == SP_BORDER_LAYER_BOTTOM) {
1722 sp_canvas_item_move_to_z (desktop->page_border, 2);
1723 } else {
1724 int order = sp_canvas_item_order (desktop->page_border);
1725 int morder = sp_canvas_item_order (desktop->drawing);
1726 if (morder > order) sp_canvas_item_raise (desktop->page_border,
1727 morder - order);
1728 }
1729 } else {
1730 sp_canvas_item_hide (desktop->page_border);
1731 if (nv->pageshadow) {
1732 ((CtrlRect *) desktop->page)->setShadow(0, 0x00000000);
1733 }
1734 }
1736 /* Show/hide page shadow */
1737 if (nv->showpageshadow && nv->pageshadow) {
1738 ((CtrlRect *) desktop->page_border)->setShadow(nv->pageshadow, nv->bordercolor);
1739 } else {
1740 ((CtrlRect *) desktop->page_border)->setShadow(0, 0x00000000);
1741 }
1743 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1744 if (SP_RGBA32_A_U(nv->pagecolor) < 128 ||
1745 (SP_RGBA32_R_U(nv->pagecolor) +
1746 SP_RGBA32_G_U(nv->pagecolor) +
1747 SP_RGBA32_B_U(nv->pagecolor)) >= 384) {
1748 // the background color is light or transparent, use black outline
1749 SP_CANVAS_ARENA (desktop->drawing)->arena->outlinecolor = prefs->getInt("/options/wireframecolors/onlight", 0xff);
1750 } else { // use white outline
1751 SP_CANVAS_ARENA (desktop->drawing)->arena->outlinecolor = prefs->getInt("/options/wireframecolors/ondark", 0xffffffff);
1752 }
1753 }
1754 }
1756 Geom::Matrix SPDesktop::w2d() const
1757 {
1758 return _w2d;
1759 }
1761 Geom::Point SPDesktop::w2d(Geom::Point const &p) const
1762 {
1763 return p * _w2d;
1764 }
1766 Geom::Point SPDesktop::d2w(Geom::Point const &p) const
1767 {
1768 return p * _d2w;
1769 }
1771 Geom::Matrix SPDesktop::doc2dt() const
1772 {
1773 return _doc2dt;
1774 }
1776 Geom::Matrix SPDesktop::dt2doc() const
1777 {
1778 // doc2dt is its own inverse
1779 return _doc2dt;
1780 }
1782 Geom::Point SPDesktop::doc2dt(Geom::Point const &p) const
1783 {
1784 return p * _doc2dt;
1785 }
1787 Geom::Point SPDesktop::dt2doc(Geom::Point const &p) const
1788 {
1789 return p * dt2doc();
1790 }
1793 /**
1794 * Pop event context from desktop's context stack. Never used.
1795 */
1796 // void
1797 // SPDesktop::pop_event_context (unsigned int key)
1798 // {
1799 // SPEventContext *ec = NULL;
1800 //
1801 // if (event_context && event_context->key == key) {
1802 // g_return_if_fail (event_context);
1803 // g_return_if_fail (event_context->next);
1804 // ec = event_context;
1805 // sp_event_context_deactivate (ec);
1806 // event_context = ec->next;
1807 // sp_event_context_activate (event_context);
1808 // _event_context_changed_signal.emit (this, ec);
1809 // }
1810 //
1811 // SPEventContext *ref = event_context;
1812 // while (ref && ref->next && ref->next->key != key)
1813 // ref = ref->next;
1814 //
1815 // if (ref && ref->next) {
1816 // ec = ref->next;
1817 // ref->next = ec->next;
1818 // }
1819 //
1820 // if (ec) {
1821 // sp_event_context_finish (ec);
1822 // g_object_unref (G_OBJECT (ec));
1823 // }
1824 // }
1826 /*
1827 Local Variables:
1828 mode:c++
1829 c-file-style:"stroustrup"
1830 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
1831 indent-tabs-mode:nil
1832 fill-column:99
1833 End:
1834 */
1835 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :