#define __SP_DESKTOP_C__ /** \file * Editable view implementation * * Authors: * Lauris Kaplinski * MenTaLguY * bulia byak * Ralf Stephan * John Bintz * Johan Engelen * * Copyright (C) 2007 Jon A. Cruz * Copyright (C) 2006-2008 Johan Engelen * Copyright (C) 2006 John Bintz * Copyright (C) 2004 MenTaLguY * Copyright (C) 1999-2002 Lauris Kaplinski * Copyright (C) 2000-2001 Ximian, Inc. * * Released under GNU GPL, read the file 'COPYING' for more information */ /** \class SPDesktop * SPDesktop is a subclass of View, implementing an editable document * canvas. It is extensively used by many UI controls that need certain * visual representations of their own. * * SPDesktop provides a certain set of SPCanvasItems, serving as GUI * layers of different control objects. The one containing the whole * document is the drawing layer. In addition to it, there are grid, * guide, sketch and control layers. The sketch layer is used for * temporary drawing objects, before the real objects in document are * created. The control layer contains editing knots, rubberband and * similar non-document UI objects. * * Each SPDesktop is associated with a SPNamedView node of the document * tree. Currently, all desktops are created from a single main named * view, but in the future there may be support for different ones. * SPNamedView serves as an in-document container for desktop-related * data, like grid and guideline placement, snapping options and so on. * * Associated with each SPDesktop are the two most important editing * related objects - SPSelection and SPEventContext. * * Sodipodi keeps track of the active desktop and invokes notification * signals whenever it changes. UI elements can use these to update their * display to the selection of the currently active editing window. * (Lauris Kaplinski) */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include "macros.h" #include "inkscape-private.h" #include "desktop.h" #include "desktop-events.h" #include "desktop-handles.h" #include "document.h" #include "message-stack.h" #include "selection.h" #include "select-context.h" #include "sp-namedview.h" #include "color.h" #include "sp-item-group.h" #include "prefs-utils.h" #include "object-hierarchy.h" #include "helper/units.h" #include "display/canvas-arena.h" #include "display/nr-arena.h" #include "display/gnome-canvas-acetate.h" #include "display/sodipodi-ctrlrect.h" #include "display/sp-canvas-util.h" #include "display/canvas-temporary-item-list.h" #include "display/snap-indicator.h" #include "libnr/nr-matrix-div.h" #include "libnr/nr-rect-ops.h" #include "ui/dialog/dialog-manager.h" #include "xml/repr.h" #include "message-context.h" #include "device-manager.h" #include "layer-manager.h" #include "event-log.h" #include "display/canvas-grid.h" #include "widgets/desktop-widget.h" #include "box3d-context.h" #include "display/sp-canvas.h" namespace Inkscape { namespace XML { class Node; }} // Callback declarations static void _onSelectionChanged (Inkscape::Selection *selection, SPDesktop *desktop); static gint _arena_handler (SPCanvasArena *arena, NRArenaItem *ai, GdkEvent *event, SPDesktop *desktop); static void _layer_activated(SPObject *layer, SPDesktop *desktop); static void _layer_deactivated(SPObject *layer, SPDesktop *desktop); static void _layer_hierarchy_changed(SPObject *top, SPObject *bottom, SPDesktop *desktop); static void _reconstruction_start(SPDesktop * desktop); static void _reconstruction_finish(SPDesktop * desktop); static void _namedview_modified (SPObject *obj, guint flags, SPDesktop *desktop); static void _update_snap_distances (SPDesktop *desktop); /** * Return new desktop object. * \pre namedview != NULL. * \pre canvas != NULL. */ SPDesktop::SPDesktop() : _dlg_mgr( 0 ), namedview( 0 ), canvas( 0 ), selection( 0 ), event_context( 0 ), layer_manager( 0 ), event_log( 0 ), temporary_item_list( 0 ), snapindicator( 0 ), acetate( 0 ), main( 0 ), gridgroup( 0 ), guides( 0 ), drawing( 0 ), sketch( 0 ), controls( 0 ), tempgroup ( 0 ), table( 0 ), page( 0 ), page_border( 0 ), current( 0 ), zooms_past( 0 ), zooms_future( 0 ), dkey( 0 ), number( 0 ), window_state(0), interaction_disabled_counter( 0 ), waiting_cursor( false ), guides_active( false ), gr_item( 0 ), gr_point_type( 0 ), gr_point_i( 0 ), gr_fill_or_stroke( true ), _layer_hierarchy( 0 ), _reconstruction_old_layer_id( 0 ), _display_mode(Inkscape::RENDERMODE_NORMAL), _saved_display_mode(Inkscape::RENDERMODE_NORMAL), _widget( 0 ), _inkscape( 0 ), _guides_message_context( 0 ), _active( false ), _w2d(), _d2w(), _doc2dt( NR::Matrix(NR::scale(1, -1)) ), grids_visible( false ) { _d2w.set_identity(); _w2d.set_identity(); selection = Inkscape::GC::release( new Inkscape::Selection(this) ); } void SPDesktop::init (SPNamedView *nv, SPCanvas *aCanvas) { // Temporary workaround for link order issues: Inkscape::DeviceManager::getManager().getDevices(); _guides_message_context = new Inkscape::MessageContext(const_cast(messageStack())); current = sp_repr_css_attr_inherited (inkscape_get_repr (INKSCAPE, "desktop"), "style"); namedview = nv; canvas = aCanvas; SPDocument *document = SP_OBJECT_DOCUMENT (namedview); /* Kill flicker */ sp_document_ensure_up_to_date (document); /* Setup Dialog Manager */ _dlg_mgr = &Inkscape::UI::Dialog::DialogManager::getInstance(); dkey = sp_item_display_key_new (1); /* Connect document */ setDocument (document); number = namedview->getViewCount(); /* Setup Canvas */ g_object_set_data (G_OBJECT (canvas), "SPDesktop", this); SPCanvasGroup *root = sp_canvas_root (canvas); /* Setup adminstrative layers */ acetate = sp_canvas_item_new (root, GNOME_TYPE_CANVAS_ACETATE, NULL); g_signal_connect (G_OBJECT (acetate), "event", G_CALLBACK (sp_desktop_root_handler), this); main = (SPCanvasGroup *) sp_canvas_item_new (root, SP_TYPE_CANVAS_GROUP, NULL); g_signal_connect (G_OBJECT (main), "event", G_CALLBACK (sp_desktop_root_handler), this); table = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL); SP_CTRLRECT(table)->setRectangle(NR::Rect(NR::Point(-80000, -80000), NR::Point(80000, 80000))); SP_CTRLRECT(table)->setColor(0x00000000, true, 0x00000000); sp_canvas_item_move_to_z (table, 0); page = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL); ((CtrlRect *) page)->setColor(0x00000000, FALSE, 0x00000000); page_border = sp_canvas_item_new (main, SP_TYPE_CTRLRECT, NULL); drawing = sp_canvas_item_new (main, SP_TYPE_CANVAS_ARENA, NULL); g_signal_connect (G_OBJECT (drawing), "arena_event", G_CALLBACK (_arena_handler), this); SP_CANVAS_ARENA (drawing)->arena->delta = prefs_get_double_attribute ("options.cursortolerance", "value", 1.0); // default is 1 px if (prefs_get_int_attribute("options.startmode", "outline", 0)) { // Start in outline mode setDisplayModeOutline(); } else { // Start in normal mode, default setDisplayModeNormal(); } gridgroup = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL); guides = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL); sketch = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL); controls = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL); tempgroup = (SPCanvasGroup *) sp_canvas_item_new (main, SP_TYPE_CANVAS_GROUP, NULL); /* Push select tool to the bottom of stack */ /** \todo * FIXME: this is the only call to this. Everything else seems to just * call "set" instead of "push". Can we assume that there is only one * context ever? */ push_event_context (SP_TYPE_SELECT_CONTEXT, "tools.select", SP_EVENT_CONTEXT_STATIC); // display rect and zoom are now handled in sp_desktop_widget_realize() NR::Rect const d(NR::Point(0.0, 0.0), NR::Point(sp_document_width(document), sp_document_height(document))); SP_CTRLRECT(page)->setRectangle(d); SP_CTRLRECT(page_border)->setRectangle(d); /* the following sets the page shadow on the canvas It was originally set to 5, which is really cheesy! It now is an attribute in the document's namedview. If a value of 0 is used, then the constructor for a shadow is not initialized. */ if ( namedview->pageshadow != 0 && namedview->showpageshadow ) { SP_CTRLRECT(page_border)->setShadow(namedview->pageshadow, 0x3f3f3fff); } /* Connect event for page resize */ _doc2dt[5] = sp_document_height (document); sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (drawing), _doc2dt); _modified_connection = namedview->connectModified(sigc::bind<2>(sigc::ptr_fun(&_namedview_modified), this)); NRArenaItem *ai = sp_item_invoke_show (SP_ITEM (sp_document_root (document)), SP_CANVAS_ARENA (drawing)->arena, dkey, SP_ITEM_SHOW_DISPLAY); if (ai) { nr_arena_item_add_child (SP_CANVAS_ARENA (drawing)->root, ai, NULL); nr_arena_item_unref (ai); } namedview->show(this); /* Ugly hack */ activate_guides (true); /* Ugly hack */ _namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this); /* Set up notification of rebuilding the document, this allows for saving object related settings in the document. */ _reconstruction_start_connection = document->connectReconstructionStart(sigc::bind(sigc::ptr_fun(_reconstruction_start), this)); _reconstruction_finish_connection = document->connectReconstructionFinish(sigc::bind(sigc::ptr_fun(_reconstruction_finish), this)); _reconstruction_old_layer_id = NULL; // ? // sp_active_desktop_set (desktop); _inkscape = INKSCAPE; _activate_connection = _activate_signal.connect( sigc::bind( sigc::ptr_fun(_onActivate), this ) ); _deactivate_connection = _deactivate_signal.connect( sigc::bind( sigc::ptr_fun(_onDeactivate), this ) ); _sel_modified_connection = selection->connectModified( sigc::bind( sigc::ptr_fun(&_onSelectionModified), this ) ); _sel_changed_connection = selection->connectChanged( sigc::bind( sigc::ptr_fun(&_onSelectionChanged), this ) ); /* setup LayerManager */ // (Setting up after the connections are all in place, as it may use some of them) layer_manager = new Inkscape::LayerManager( this ); showGrids(namedview->grids_visible, false); temporary_item_list = new Inkscape::Display::TemporaryItemList( this ); snapindicator = new Inkscape::Display::SnapIndicator ( this ); } void SPDesktop::destroy() { if (snapindicator) { delete snapindicator; snapindicator = NULL; } if (temporary_item_list) { delete temporary_item_list; temporary_item_list = NULL; } namedview->hide(this); _activate_connection.disconnect(); _deactivate_connection.disconnect(); _sel_modified_connection.disconnect(); _sel_changed_connection.disconnect(); _modified_connection.disconnect(); _commit_connection.disconnect(); _reconstruction_start_connection.disconnect(); _reconstruction_finish_connection.disconnect(); g_signal_handlers_disconnect_by_func(G_OBJECT (acetate), (gpointer) G_CALLBACK(sp_desktop_root_handler), this); g_signal_handlers_disconnect_by_func(G_OBJECT (main), (gpointer) G_CALLBACK(sp_desktop_root_handler), this); g_signal_handlers_disconnect_by_func(G_OBJECT (drawing), (gpointer) G_CALLBACK(_arena_handler), this); while (event_context) { SPEventContext *ec = event_context; event_context = ec->next; sp_event_context_finish (ec); g_object_unref (G_OBJECT (ec)); } if (_layer_hierarchy) { delete _layer_hierarchy; // _layer_hierarchy = NULL; //this should be here, but commented to find other bug somewhere else. } if (layer_manager) { delete layer_manager; layer_manager = NULL; } if (_inkscape) { _inkscape = NULL; } if (drawing) { sp_item_invoke_hide (SP_ITEM (sp_document_root (doc())), dkey); drawing = NULL; } delete _guides_message_context; _guides_message_context = NULL; g_list_free (zooms_past); g_list_free (zooms_future); } SPDesktop::~SPDesktop() {} //-------------------------------------------------------------------- /* Public methods */ /** Note that lifetime is measured in milliseconds * it is perfectly safe to ignore the returned pointer: the object is deleted by itself, so don't delete it elsewhere! * The return value should only be used as argument for SPDesktop::remove_temporary_canvasitem, because the object might be deleted already. * move_to_bottom = true by default so the item does not interfere with handling of other items on the canvas like nodes. */ Inkscape::Display::TemporaryItem * SPDesktop::add_temporary_canvasitem (SPCanvasItem *item, guint lifetime, bool move_to_bottom) { if (move_to_bottom) { sp_canvas_item_move_to_z(item, 0); } return temporary_item_list->add_item(item, lifetime); } /** It is perfectly safe to call this function while the object has already been deleted due to a timeout. */ void SPDesktop::remove_temporary_canvasitem (Inkscape::Display::TemporaryItem * tempitem) { // check for non-null temporary_item_list, because during destruction of desktop, some destructor might try to access this list! if (tempitem && temporary_item_list) { temporary_item_list->delete_item(tempitem); } } void SPDesktop::_setDisplayMode(Inkscape::RenderMode mode) { SP_CANVAS_ARENA (drawing)->arena->rendermode = mode; canvas->rendermode = mode; _display_mode = mode; if (mode != Inkscape::RENDERMODE_OUTLINE) { _saved_display_mode = _display_mode; } sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (main), _d2w); // redraw _widget->setTitle(SP_DOCUMENT_NAME(sp_desktop_document(this))); } void SPDesktop::displayModeToggle() { if (_display_mode == Inkscape::RENDERMODE_OUTLINE) { _setDisplayMode(_saved_display_mode); } else { _setDisplayMode(Inkscape::RENDERMODE_OUTLINE); } } /** * Returns current root (=bottom) layer. */ SPObject *SPDesktop::currentRoot() const { return _layer_hierarchy ? _layer_hierarchy->top() : NULL; } /** * Returns current top layer. */ SPObject *SPDesktop::currentLayer() const { return _layer_hierarchy ? _layer_hierarchy->bottom() : NULL; } /** * Sets the current layer of the desktop. * * Make \a object the top layer. */ void SPDesktop::setCurrentLayer(SPObject *object) { g_return_if_fail(SP_IS_GROUP(object)); g_return_if_fail( currentRoot() == object || (currentRoot() && currentRoot()->isAncestorOf(object)) ); // printf("Set Layer to ID: %s\n", SP_OBJECT_ID(object)); _layer_hierarchy->setBottom(object); } /** * Return layer that contains \a object. */ SPObject *SPDesktop::layerForObject(SPObject *object) { g_return_val_if_fail(object != NULL, NULL); SPObject *root=currentRoot(); object = SP_OBJECT_PARENT(object); while ( object && object != root && !isLayer(object) ) { object = SP_OBJECT_PARENT(object); } return object; } /** * True if object is a layer. */ bool SPDesktop::isLayer(SPObject *object) const { return ( SP_IS_GROUP(object) && ( SP_GROUP(object)->effectiveLayerMode(this->dkey) == SPGroup::LAYER ) ); } /** * True if desktop viewport fully contains \a item's bbox. */ bool SPDesktop::isWithinViewport (SPItem *item) const { NR::Rect const viewport = get_display_area(); NR::Maybe const bbox = sp_item_bbox_desktop(item); if (bbox) { return viewport.contains(*bbox); } else { return true; } } /// bool SPDesktop::itemIsHidden(SPItem const *item) const { return item->isHidden(this->dkey); } /** * Set activate property of desktop; emit signal if changed. */ void SPDesktop::set_active (bool new_active) { if (new_active != _active) { _active = new_active; if (new_active) { _activate_signal.emit(); } else { _deactivate_signal.emit(); } } } /** * Set activate status of current desktop's named view. */ void SPDesktop::activate_guides(bool activate) { guides_active = activate; namedview->activateGuides(this, activate); } /** * Make desktop switch documents. */ void SPDesktop::change_document (SPDocument *theDocument) { g_return_if_fail (theDocument != NULL); /* unselect everything before switching documents */ selection->clear(); setDocument (theDocument); /* update the rulers, connect the desktop widget's signal to the new namedview etc. (this can probably be done in a better way) */ Gtk::Window *parent = this->getToplevel(); g_assert(parent != NULL); SPDesktopWidget *dtw = (SPDesktopWidget *) parent->get_data("desktopwidget"); if (dtw) dtw->desktop = this; sp_desktop_widget_update_namedview(dtw); _namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this); _document_replaced_signal.emit (this, theDocument); } /** * Make desktop switch event contexts. */ void SPDesktop::set_event_context (GtkType type, const gchar *config) { SPEventContext *ec; while (event_context) { ec = event_context; sp_event_context_deactivate (ec); event_context = ec->next; sp_event_context_finish (ec); g_object_unref (G_OBJECT (ec)); } Inkscape::XML::Node *repr = (config) ? inkscape_get_repr (_inkscape, config) : NULL; ec = sp_event_context_new (type, this, repr, SP_EVENT_CONTEXT_STATIC); ec->next = event_context; event_context = ec; sp_event_context_activate (ec); _event_context_changed_signal.emit (this, ec); } /** * Push event context onto desktop's context stack. */ void SPDesktop::push_event_context (GtkType type, const gchar *config, unsigned int key) { SPEventContext *ref, *ec; Inkscape::XML::Node *repr; if (event_context && event_context->key == key) return; ref = event_context; while (ref && ref->next && ref->next->key != key) ref = ref->next; if (ref && ref->next) { ec = ref->next; ref->next = ec->next; sp_event_context_finish (ec); g_object_unref (G_OBJECT (ec)); } if (event_context) sp_event_context_deactivate (event_context); repr = (config) ? inkscape_get_repr (INKSCAPE, config) : NULL; ec = sp_event_context_new (type, this, repr, key); ec->next = event_context; event_context = ec; sp_event_context_activate (ec); _event_context_changed_signal.emit (this, ec); } /** * Sets the coordinate status to a given point */ void SPDesktop::set_coordinate_status (NR::Point p) { _widget->setCoordinateStatus(p); } /** * \see sp_document_item_from_list_at_point_bottom() */ SPItem * SPDesktop::item_from_list_at_point_bottom (const GSList *list, NR::Point const p) const { g_return_val_if_fail (doc() != NULL, NULL); return sp_document_item_from_list_at_point_bottom (dkey, SP_GROUP (doc()->root), list, p); } /** * \see sp_document_item_at_point() */ SPItem * SPDesktop::item_at_point (NR::Point const p, bool into_groups, SPItem *upto) const { g_return_val_if_fail (doc() != NULL, NULL); return sp_document_item_at_point (doc(), dkey, p, into_groups, upto); } /** * \see sp_document_group_at_point() */ SPItem * SPDesktop::group_at_point (NR::Point const p) const { g_return_val_if_fail (doc() != NULL, NULL); return sp_document_group_at_point (doc(), dkey, p); } /** * \brief Returns the mouse point in document coordinates; if mouse is * outside the canvas, returns the center of canvas viewpoint */ NR::Point SPDesktop::point() const { NR::Point p = _widget->getPointer(); NR::Point pw = sp_canvas_window_to_world (canvas, p); p = w2d(pw); NR::Rect const r = canvas->getViewbox(); NR::Point r0 = w2d(r.min()); NR::Point r1 = w2d(r.max()); if (p[NR::X] >= r0[NR::X] && p[NR::X] <= r1[NR::X] && p[NR::Y] >= r1[NR::Y] && p[NR::Y] <= r0[NR::Y]) { return p; } else { return (r0 + r1) / 2; } } /** * Put current zoom data in history list. */ void SPDesktop::push_current_zoom (GList **history) { NR::Rect const area = get_display_area(); NRRect *old_zoom = g_new(NRRect, 1); old_zoom->x0 = area.min()[NR::X]; old_zoom->x1 = area.max()[NR::X]; old_zoom->y0 = area.min()[NR::Y]; old_zoom->y1 = area.max()[NR::Y]; if ( *history == NULL || !( ( ((NRRect *) ((*history)->data))->x0 == old_zoom->x0 ) && ( ((NRRect *) ((*history)->data))->x1 == old_zoom->x1 ) && ( ((NRRect *) ((*history)->data))->y0 == old_zoom->y0 ) && ( ((NRRect *) ((*history)->data))->y1 == old_zoom->y1 ) ) ) { *history = g_list_prepend (*history, old_zoom); } } /** * Set viewbox (x0, x1, y0 and y1 are in document pixels. Border is in screen pixels). */ void SPDesktop::set_display_area (double x0, double y0, double x1, double y1, double border, bool log) { g_assert(_widget); // save the zoom if (log) { push_current_zoom(&zooms_past); // if we do a logged zoom, our zoom-forward list is invalidated, so delete it g_list_free (zooms_future); zooms_future = NULL; } double const cx = 0.5 * (x0 + x1); double const cy = 0.5 * (y0 + y1); NR::Rect const viewbox = NR::expand(canvas->getViewbox(), border); double scale = expansion(_d2w); double newscale; if (((x1 - x0) * viewbox.dimensions()[NR::Y]) > ((y1 - y0) * viewbox.dimensions()[NR::X])) { newscale = viewbox.dimensions()[NR::X] / (x1 - x0); } else { newscale = viewbox.dimensions()[NR::Y] / (y1 - y0); } newscale = CLAMP(newscale, SP_DESKTOP_ZOOM_MIN, SP_DESKTOP_ZOOM_MAX); // unit: 'screen pixels' per 'document pixels' int clear = FALSE; if (!NR_DF_TEST_CLOSE (newscale, scale, 1e-4 * scale)) { /* Set zoom factors */ _d2w = NR::Matrix(NR::scale(newscale, -newscale)); _w2d = NR::Matrix(NR::scale(1/newscale, 1/-newscale)); sp_canvas_item_affine_absolute(SP_CANVAS_ITEM(main), _d2w); clear = TRUE; } /* Calculate top left corner (in document pixels) */ x0 = cx - 0.5 * viewbox.dimensions()[NR::X] / newscale; y1 = cy + 0.5 * viewbox.dimensions()[NR::Y] / newscale; /* Scroll */ sp_canvas_scroll_to (canvas, x0 * newscale - border, y1 * -newscale - border, clear); /* update perspective lines if we are in the 3D box tool (so that infinite ones are shown correctly) */ sp_box3d_context_update_lines(event_context); _widget->updateRulers(); _widget->updateScrollbars(expansion(_d2w)); _widget->updateZoom(); } void SPDesktop::set_display_area(NR::Rect const &a, NR::Coord b, bool log) { set_display_area(a.min()[NR::X], a.min()[NR::Y], a.max()[NR::X], a.max()[NR::Y], b, log); } /** * Return viewbox dimensions. */ NR::Rect SPDesktop::get_display_area() const { NR::Rect const viewbox = canvas->getViewbox(); double const scale = _d2w[0]; return NR::Rect(NR::Point(viewbox.min()[NR::X] / scale, viewbox.max()[NR::Y] / -scale), NR::Point(viewbox.max()[NR::X] / scale, viewbox.min()[NR::Y] / -scale)); } /** * Revert back to previous zoom if possible. */ void SPDesktop::prev_zoom() { if (zooms_past == NULL) { messageStack()->flash(Inkscape::WARNING_MESSAGE, _("No previous zoom.")); return; } // push current zoom into forward zooms list push_current_zoom (&zooms_future); // restore previous zoom set_display_area (((NRRect *) zooms_past->data)->x0, ((NRRect *) zooms_past->data)->y0, ((NRRect *) zooms_past->data)->x1, ((NRRect *) zooms_past->data)->y1, 0, false); // remove the just-added zoom from the past zooms list zooms_past = g_list_remove (zooms_past, ((NRRect *) zooms_past->data)); } /** * Set zoom to next in list. */ void SPDesktop::next_zoom() { if (zooms_future == NULL) { this->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("No next zoom.")); return; } // push current zoom into past zooms list push_current_zoom (&zooms_past); // restore next zoom set_display_area (((NRRect *) zooms_future->data)->x0, ((NRRect *) zooms_future->data)->y0, ((NRRect *) zooms_future->data)->x1, ((NRRect *) zooms_future->data)->y1, 0, false); // remove the just-used zoom from the zooms_future list zooms_future = g_list_remove (zooms_future, ((NRRect *) zooms_future->data)); } /** * Zoom to point with absolute zoom factor. */ void SPDesktop::zoom_absolute_keep_point (double cx, double cy, double px, double py, double zoom) { zoom = CLAMP (zoom, SP_DESKTOP_ZOOM_MIN, SP_DESKTOP_ZOOM_MAX); // maximum or minimum zoom reached, but there's no exact equality because of rounding errors; // this check prevents "sliding" when trying to zoom in at maximum zoom; /// \todo someone please fix calculations properly and remove this hack if (fabs(expansion(_d2w) - zoom) < 0.0001*zoom && (fabs(SP_DESKTOP_ZOOM_MAX - zoom) < 0.01 || fabs(SP_DESKTOP_ZOOM_MIN - zoom) < 0.000001)) return; NR::Rect const viewbox = canvas->getViewbox(); double const width2 = viewbox.dimensions()[NR::X] / zoom; double const height2 = viewbox.dimensions()[NR::Y] / zoom; set_display_area(cx - px * width2, cy - py * height2, cx + (1 - px) * width2, cy + (1 - py) * height2, 0.0); } /** * Zoom to center with absolute zoom factor. */ void SPDesktop::zoom_absolute (double cx, double cy, double zoom) { zoom_absolute_keep_point (cx, cy, 0.5, 0.5, zoom); } /** * Zoom to point with relative zoom factor. */ void SPDesktop::zoom_relative_keep_point (double cx, double cy, double zoom) { NR::Rect const area = get_display_area(); if (cx < area.min()[NR::X]) { cx = area.min()[NR::X]; } if (cx > area.max()[NR::X]) { cx = area.max()[NR::X]; } if (cy < area.min()[NR::Y]) { cy = area.min()[NR::Y]; } if (cy > area.max()[NR::Y]) { cy = area.max()[NR::Y]; } gdouble const scale = expansion(_d2w) * zoom; double const px = (cx - area.min()[NR::X]) / area.dimensions()[NR::X]; double const py = (cy - area.min()[NR::Y]) / area.dimensions()[NR::Y]; zoom_absolute_keep_point(cx, cy, px, py, scale); } /** * Zoom to center with relative zoom factor. */ void SPDesktop::zoom_relative (double cx, double cy, double zoom) { gdouble scale = expansion(_d2w) * zoom; zoom_absolute (cx, cy, scale); } /** * Set display area to origin and current document dimensions. */ void SPDesktop::zoom_page() { NR::Rect d(NR::Point(0, 0), NR::Point(sp_document_width(doc()), sp_document_height(doc()))); if (d.isEmpty(1.0)) { return; } set_display_area(d, 10); } /** * Set display area to current document width. */ void SPDesktop::zoom_page_width() { NR::Rect const a = get_display_area(); if (sp_document_width(doc()) < 1.0) { return; } NR::Rect d(NR::Point(0, a.midpoint()[NR::Y]), NR::Point(sp_document_width(doc()), a.midpoint()[NR::Y])); set_display_area(d, 10); } /** * Zoom to selection. */ void SPDesktop::zoom_selection() { NR::Maybe const d = selection->bounds(); if ( !d || d->isEmpty(0.1) ) { return; } set_display_area(*d, 10); } /** * Tell widget to let zoom widget grab keyboard focus. */ void SPDesktop::zoom_grab_focus() { _widget->letZoomGrabFocus(); } /** * Zoom to whole drawing. */ void SPDesktop::zoom_drawing() { g_return_if_fail (doc() != NULL); SPItem *docitem = SP_ITEM (sp_document_root (doc())); g_return_if_fail (docitem != NULL); NR::Maybe d = sp_item_bbox_desktop(docitem); /* Note that the second condition here indicates that ** there are no items in the drawing. */ if ( !d || d->isEmpty(1.0) ) { return; } set_display_area(*d, 10); } /** * Scroll canvas by specific coordinate amount in svg coordinates. */ void SPDesktop::scroll_world_in_svg_coords (double dx, double dy, bool is_scrolling) { double scale = expansion(_d2w); scroll_world(dx*scale, dy*scale, is_scrolling); } /** * Scroll canvas by specific coordinate amount. */ void SPDesktop::scroll_world (double dx, double dy, bool is_scrolling) { g_assert(_widget); NR::Rect const viewbox = canvas->getViewbox(); sp_canvas_scroll_to(canvas, viewbox.min()[NR::X] - dx, viewbox.min()[NR::Y] - dy, FALSE, is_scrolling); /* update perspective lines if we are in the 3D box tool (so that infinite ones are shown correctly) */ sp_box3d_context_update_lines(event_context); _widget->updateRulers(); _widget->updateScrollbars(expansion(_d2w)); } bool SPDesktop::scroll_to_point (NR::Point const *p, gdouble autoscrollspeed) { gdouble autoscrolldistance = (gdouble) prefs_get_int_attribute_limited ("options.autoscrolldistance", "value", 0, -1000, 10000); // autoscrolldistance is in screen pixels, but the display area is in document units autoscrolldistance /= expansion(_d2w); NR::Rect const dbox = NR::expand(get_display_area(), -autoscrolldistance); if (!((*p)[NR::X] > dbox.min()[NR::X] && (*p)[NR::X] < dbox.max()[NR::X]) || !((*p)[NR::Y] > dbox.min()[NR::Y] && (*p)[NR::Y] < dbox.max()[NR::Y]) ) { NR::Point const s_w( (*p) * _d2w ); gdouble x_to; if ((*p)[NR::X] < dbox.min()[NR::X]) x_to = dbox.min()[NR::X]; else if ((*p)[NR::X] > dbox.max()[NR::X]) x_to = dbox.max()[NR::X]; else x_to = (*p)[NR::X]; gdouble y_to; if ((*p)[NR::Y] < dbox.min()[NR::Y]) y_to = dbox.min()[NR::Y]; else if ((*p)[NR::Y] > dbox.max()[NR::Y]) y_to = dbox.max()[NR::Y]; else y_to = (*p)[NR::Y]; NR::Point const d_dt(x_to, y_to); NR::Point const d_w( d_dt * _d2w ); NR::Point const moved_w( d_w - s_w ); if (autoscrollspeed == 0) autoscrollspeed = prefs_get_double_attribute_limited ("options.autoscrollspeed", "value", 1, 0, 10); if (autoscrollspeed != 0) scroll_world (autoscrollspeed * moved_w); return true; } return false; } bool SPDesktop::is_iconified() { return 0!=(window_state & GDK_WINDOW_STATE_ICONIFIED); } void SPDesktop::iconify() { _widget->setIconified(); } bool SPDesktop::is_maximized() { return 0!=(window_state & GDK_WINDOW_STATE_MAXIMIZED); } void SPDesktop::maximize() { _widget->setMaximized(); } bool SPDesktop::is_fullscreen() { return 0!=(window_state & GDK_WINDOW_STATE_FULLSCREEN); } void SPDesktop::fullscreen() { _widget->setFullscreen(); } void SPDesktop::getWindowGeometry (gint &x, gint &y, gint &w, gint &h) { _widget->getGeometry (x, y, w, h); } void SPDesktop::setWindowPosition (NR::Point p) { _widget->setPosition (p); } void SPDesktop::setWindowSize (gint w, gint h) { _widget->setSize (w, h); } void SPDesktop::setWindowTransient (void *p, int transient_policy) { _widget->setTransient (p, transient_policy); } Gtk::Window* SPDesktop::getToplevel( ) { return _widget->getWindow(); } void SPDesktop::presentWindow() { _widget->present(); } bool SPDesktop::warnDialog (gchar *text) { return _widget->warnDialog (text); } void SPDesktop::toggleRulers() { _widget->toggleRulers(); } void SPDesktop::toggleScrollbars() { _widget->toggleScrollbars(); } void SPDesktop::layoutWidget() { _widget->layout(); } void SPDesktop::destroyWidget() { _widget->destroy(); } bool SPDesktop::shutdown() { return _widget->shutdown(); } bool SPDesktop::onDeleteUI (GdkEventAny*) { if(shutdown()) return true; destroyWidget(); return false; } /** * onWindowStateEvent * * Called when the window changes its maximize/fullscreen/iconify/pinned state. * Since GTK doesn't have a way to query this state information directly, we * record it for the desktop here, and also possibly trigger a layout. */ bool SPDesktop::onWindowStateEvent (GdkEventWindowState* event) { // Record the desktop window's state window_state = event->new_window_state; // Layout may differ depending on full-screen mode or not GdkWindowState changed = event->changed_mask; if (changed & (GDK_WINDOW_STATE_FULLSCREEN|GDK_WINDOW_STATE_MAXIMIZED)) { layoutWidget(); } return false; } void SPDesktop::setToolboxFocusTo (gchar const *label) { _widget->setToolboxFocusTo (label); } void SPDesktop::setToolboxAdjustmentValue (gchar const* id, double val) { _widget->setToolboxAdjustmentValue (id, val); } void SPDesktop::setToolboxSelectOneValue (gchar const* id, gint val) { _widget->setToolboxSelectOneValue (id, val); } bool SPDesktop::isToolboxButtonActive (gchar const *id) { return _widget->isToolboxButtonActive (id); } void SPDesktop::emitToolSubselectionChanged(gpointer data) { _tool_subselection_changed.emit(data); inkscape_subselection_changed (this); } void SPDesktop::updateNow() { sp_canvas_update_now(canvas); } void SPDesktop::enableInteraction() { _widget->enableInteraction(); } void SPDesktop::disableInteraction() { _widget->disableInteraction(); } void SPDesktop::setWaitingCursor() { GdkCursor *waiting = gdk_cursor_new(GDK_WATCH); gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(this))->window, waiting); gdk_cursor_unref(waiting); waiting_cursor = true; // Stupidly broken GDK cannot just set the new cursor right now - it needs some main loop iterations for that // Since setting waiting_cursor is usually immediately followed by some Real Work, we must run the iterations here // CAUTION: iterations may redraw, and redraw may be interrupted, so you cannot assume that anything is the same // after the call to setWaitingCursor as it was before while( Gtk::Main::events_pending() ) Gtk::Main::iteration(); } void SPDesktop::clearWaitingCursor() { if (waiting_cursor) sp_event_context_update_cursor(sp_desktop_event_context(this)); } void SPDesktop::toggleColorProfAdjust() { _widget->toggleColorProfAdjust(); } void SPDesktop::toggleGrids() { if (namedview->grids) { if(gridgroup) { showGrids(!grids_visible); } } else { //there is no grid present at the moment. add a rectangular grid and make it visible Inkscape::XML::Node *repr = SP_OBJECT_REPR(namedview); Inkscape::CanvasGrid::writeNewGridToRepr(repr, sp_desktop_document(this), Inkscape::GRID_RECTANGULAR); showGrids(true); } } void SPDesktop::showGrids(bool show, bool dirty_document) { grids_visible = show; sp_namedview_show_grids(namedview, grids_visible, dirty_document); if (show) { sp_canvas_item_show(SP_CANVAS_ITEM(gridgroup)); } else { sp_canvas_item_hide(SP_CANVAS_ITEM(gridgroup)); } } void SPDesktop::toggleSnapping() { bool v = namedview->snap_manager.getSnapEnabledGlobally(); Inkscape::XML::Node *repr = SP_OBJECT_REPR(namedview); sp_repr_set_boolean(repr, "inkscape:snap-global", !v); } //---------------------------------------------------------------------- // Callback implementations. The virtual ones are connected by the view. void SPDesktop::onPositionSet (double x, double y) { _widget->viewSetPosition (NR::Point(x,y)); } void SPDesktop::onResized (double /*x*/, double /*y*/) { // Nothing called here } /** * Redraw callback; queues Gtk redraw; connected by View. */ void SPDesktop::onRedrawRequested () { if (main) { _widget->requestCanvasUpdate(); } } void SPDesktop::updateCanvasNow() { _widget->requestCanvasUpdateAndWait(); } /** * Associate document with desktop. */ void SPDesktop::setDocument (SPDocument *doc) { if (this->doc() && doc) { namedview->hide(this); sp_item_invoke_hide (SP_ITEM (sp_document_root (this->doc())), dkey); } if (_layer_hierarchy) { _layer_hierarchy->clear(); delete _layer_hierarchy; } _layer_hierarchy = new Inkscape::ObjectHierarchy(NULL); _layer_hierarchy->connectAdded(sigc::bind(sigc::ptr_fun(_layer_activated), this)); _layer_hierarchy->connectRemoved(sigc::bind(sigc::ptr_fun(_layer_deactivated), this)); _layer_hierarchy->connectChanged(sigc::bind(sigc::ptr_fun(_layer_hierarchy_changed), this)); _layer_hierarchy->setTop(SP_DOCUMENT_ROOT(doc)); /* setup EventLog */ event_log = new Inkscape::EventLog(doc); doc->addUndoObserver(*event_log); _commit_connection.disconnect(); _commit_connection = doc->connectCommit(sigc::mem_fun(*this, &SPDesktop::updateNow)); /// \todo fixme: This condition exists to make sure the code /// inside is NOT called on initialization, only on replacement. But there /// are surely more safe methods to accomplish this. // TODO since the comment had reversed logic, check the intent of this block of code: if (drawing) { NRArenaItem *ai = 0; namedview = sp_document_namedview (doc, NULL); _modified_connection = namedview->connectModified(sigc::bind<2>(sigc::ptr_fun(&_namedview_modified), this)); number = namedview->getViewCount(); ai = sp_item_invoke_show (SP_ITEM (sp_document_root (doc)), SP_CANVAS_ARENA (drawing)->arena, dkey, SP_ITEM_SHOW_DISPLAY); if (ai) { nr_arena_item_add_child (SP_CANVAS_ARENA (drawing)->root, ai, NULL); nr_arena_item_unref (ai); } namedview->show(this); /* Ugly hack */ activate_guides (true); /* Ugly hack */ _namedview_modified (namedview, SP_OBJECT_MODIFIED_FLAG, this); } _document_replaced_signal.emit (this, doc); View::setDocument (doc); } void SPDesktop::onStatusMessage (Inkscape::MessageType type, gchar const *message) { if (_widget) { _widget->setMessage(type, message); } } void SPDesktop::onDocumentURISet (gchar const* uri) { _widget->setTitle(uri); } /** * Resized callback. */ void SPDesktop::onDocumentResized (gdouble width, gdouble height) { _doc2dt[5] = height; sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (drawing), _doc2dt); NR::Rect const a(NR::Point(0, 0), NR::Point(width, height)); SP_CTRLRECT(page)->setRectangle(a); SP_CTRLRECT(page_border)->setRectangle(a); } void SPDesktop::_onActivate (SPDesktop* dt) { if (!dt->_widget) return; dt->_widget->activateDesktop(); } void SPDesktop::_onDeactivate (SPDesktop* dt) { if (!dt->_widget) return; dt->_widget->deactivateDesktop(); } void SPDesktop::_onSelectionModified (Inkscape::Selection */*selection*/, guint /*flags*/, SPDesktop *dt) { if (!dt->_widget) return; dt->_widget->updateScrollbars (expansion(dt->_d2w)); } static void _onSelectionChanged (Inkscape::Selection *selection, SPDesktop *desktop) { /** \todo * only change the layer for single selections, or what? * This seems reasonable -- for multiple selections there can be many * different layers involved. */ SPItem *item=selection->singleItem(); if (item) { SPObject *layer=desktop->layerForObject(item); if ( layer && layer != desktop->currentLayer() ) { desktop->setCurrentLayer(layer); } } } /** * Calls event handler of current event context. * \param arena Unused * \todo fixme */ static gint _arena_handler (SPCanvasArena */*arena*/, NRArenaItem *ai, GdkEvent *event, SPDesktop *desktop) { if (ai) { SPItem *spi = (SPItem*)NR_ARENA_ITEM_GET_DATA (ai); return sp_event_context_item_handler (desktop->event_context, spi, event); } else { return sp_event_context_root_handler (desktop->event_context, event); } } static void _layer_activated(SPObject *layer, SPDesktop *desktop) { g_return_if_fail(SP_IS_GROUP(layer)); SP_GROUP(layer)->setLayerDisplayMode(desktop->dkey, SPGroup::LAYER); } /// Callback static void _layer_deactivated(SPObject *layer, SPDesktop *desktop) { g_return_if_fail(SP_IS_GROUP(layer)); SP_GROUP(layer)->setLayerDisplayMode(desktop->dkey, SPGroup::GROUP); } /// Callback static void _layer_hierarchy_changed(SPObject */*top*/, SPObject *bottom, SPDesktop *desktop) { desktop->_layer_changed_signal.emit (bottom); } /// Called when document is starting to be rebuilt. static void _reconstruction_start (SPDesktop * desktop) { // printf("Desktop, starting reconstruction\n"); desktop->_reconstruction_old_layer_id = g_strdup(SP_OBJECT_ID(desktop->currentLayer())); desktop->_layer_hierarchy->setBottom(desktop->currentRoot()); /* GSList const * selection_objs = desktop->selection->list(); for (; selection_objs != NULL; selection_objs = selection_objs->next) { } */ desktop->selection->clear(); // printf("Desktop, starting reconstruction end\n"); } /// Called when document rebuild is finished. static void _reconstruction_finish (SPDesktop * desktop) { // printf("Desktop, finishing reconstruction\n"); if (desktop->_reconstruction_old_layer_id == NULL) return; SPObject * newLayer = SP_OBJECT_DOCUMENT(desktop->namedview)->getObjectById(desktop->_reconstruction_old_layer_id); if (newLayer != NULL) desktop->setCurrentLayer(newLayer); g_free(desktop->_reconstruction_old_layer_id); desktop->_reconstruction_old_layer_id = NULL; // printf("Desktop, finishing reconstruction end\n"); return; } /** * Namedview_modified callback. */ static void _namedview_modified (SPObject *obj, guint flags, SPDesktop *desktop) { SPNamedView *nv=SP_NAMEDVIEW(obj); if (flags & SP_OBJECT_MODIFIED_FLAG) { /* Recalculate snap distances */ /* FIXME: why is the desktop getting involved in setting up something ** that is entirely to do with the namedview? */ _update_snap_distances (desktop); /* Show/hide page background */ if (nv->pagecolor & 0xff) { sp_canvas_item_show (desktop->table); ((CtrlRect *) desktop->table)->setColor(0x00000000, true, nv->pagecolor); sp_canvas_item_move_to_z (desktop->table, 0); } else { sp_canvas_item_hide (desktop->table); } /* Show/hide page border */ if (nv->showborder) { // show sp_canvas_item_show (desktop->page_border); // set color and shadow ((CtrlRect *) desktop->page_border)->setColor(nv->bordercolor, false, 0x00000000); if (nv->pageshadow) { ((CtrlRect *) desktop->page_border)->setShadow(nv->pageshadow, nv->bordercolor); } // place in the z-order stack if (nv->borderlayer == SP_BORDER_LAYER_BOTTOM) { sp_canvas_item_move_to_z (desktop->page_border, 2); } else { int order = sp_canvas_item_order (desktop->page_border); int morder = sp_canvas_item_order (desktop->drawing); if (morder > order) sp_canvas_item_raise (desktop->page_border, morder - order); } } else { sp_canvas_item_hide (desktop->page_border); if (nv->pageshadow) { ((CtrlRect *) desktop->page)->setShadow(0, 0x00000000); } } /* Show/hide page shadow */ if (nv->showpageshadow && nv->pageshadow) { ((CtrlRect *) desktop->page_border)->setShadow(nv->pageshadow, nv->bordercolor); } else { ((CtrlRect *) desktop->page_border)->setShadow(0, 0x00000000); } if (SP_RGBA32_A_U(nv->pagecolor) < 128 || (SP_RGBA32_R_U(nv->pagecolor) + SP_RGBA32_G_U(nv->pagecolor) + SP_RGBA32_B_U(nv->pagecolor)) >= 384) { // the background color is light or transparent, use black outline SP_CANVAS_ARENA (desktop->drawing)->arena->outlinecolor = prefs_get_int_attribute("options.wireframecolors", "onlight", 0xff); } else { // use white outline SP_CANVAS_ARENA (desktop->drawing)->arena->outlinecolor = prefs_get_int_attribute("options.wireframecolors", "ondark", 0xffffffff); } } } /** * Callback to reset snapper's distances. */ static void _update_snap_distances (SPDesktop *desktop) { SPUnit const &px = sp_unit_get_by_id(SP_UNIT_PX); SPNamedView &nv = *desktop->namedview; //tell all grid snappers for ( GSList const *l = nv.grids; l != NULL; l = l->next) { Inkscape::CanvasGrid *grid = (Inkscape::CanvasGrid*) l->data; grid->snapper->setSnapperTolerance(sp_convert_distance_full(nv.gridtolerance, *nv.gridtoleranceunit, px)); } nv.snap_manager.guide.setSnapperTolerance(sp_convert_distance_full(nv.guidetolerance, *nv.guidetoleranceunit, px)); nv.snap_manager.object.setSnapperTolerance(sp_convert_distance_full(nv.objecttolerance, *nv.objecttoleranceunit, px)); } NR::Matrix SPDesktop::w2d() const { return _w2d; } NR::Point SPDesktop::w2d(NR::Point const &p) const { return p * _w2d; } NR::Point SPDesktop::d2w(NR::Point const &p) const { return p * _d2w; } NR::Matrix SPDesktop::doc2dt() const { return _doc2dt; } NR::Point SPDesktop::doc2dt(NR::Point const &p) const { return p * _doc2dt; } NR::Point SPDesktop::dt2doc(NR::Point const &p) const { return p / _doc2dt; } /** * Pop event context from desktop's context stack. Never used. */ // void // SPDesktop::pop_event_context (unsigned int key) // { // SPEventContext *ec = NULL; // // if (event_context && event_context->key == key) { // g_return_if_fail (event_context); // g_return_if_fail (event_context->next); // ec = event_context; // sp_event_context_deactivate (ec); // event_context = ec->next; // sp_event_context_activate (event_context); // _event_context_changed_signal.emit (this, ec); // } // // SPEventContext *ref = event_context; // while (ref && ref->next && ref->next->key != key) // ref = ref->next; // // if (ref && ref->next) { // ec = ref->next; // ref->next = ec->next; // } // // if (ec) { // sp_event_context_finish (ec); // g_object_unref (G_OBJECT (ec)); // } // } /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :