// SPDX-License-Identifier: GPL-2.0-or-later /* * Editable view implementation * * Authors: * Lauris Kaplinski * MenTaLguY * bulia byak * Ralf Stephan * John Bintz * Johan Engelen * Jon A. Cruz * Abhishek Sharma * * 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 v2+, read the file 'COPYING' for more information. */ #include #include <2geom/transforms.h> #include <2geom/rect.h> #include #include "desktop.h" #include "color.h" #include "desktop-events.h" #include "desktop-style.h" #include "device-manager.h" #include "document-undo.h" #include "event-log.h" #include "inkscape-window.h" #include "layer-manager.h" #include "message-context.h" #include "message-stack.h" #include "actions/actions-view-mode.h" // To update View menu #include "display/drawing.h" #include "display/control/canvas-temporary-item-list.h" #include "display/control/canvas-grid.h" // Grid types #include "display/control/snap-indicator.h" #include "display/control/canvas-item-catchall.h" #include "display/control/canvas-item-drawing.h" #include "display/control/canvas-item-group.h" #include "display/control/canvas-item-rect.h" #include "display/control/canvas-item-rotate.h" #include "io/fix-broken-links.h" #include "object/sp-namedview.h" #include "object/sp-root.h" #include "ui/desktop/menubar.h" #include "ui/dialog/dialog-container.h" #include "ui/interface.h" // Only for getLayoutPrefPath #include "ui/tool-factory.h" #include "ui/tools/tool-base.h" #include "ui/tools/box3d-tool.h" #include "ui/tools/select-tool.h" #include "ui/widget/canvas.h" #include "widgets/desktop-widget.h" // TODO those includes are only for node tool quick zoom. Remove them after fixing it. #include "ui/tools/node-tool.h" #include "ui/tool/control-point-selection.h" namespace Inkscape { namespace XML { class Node; }} // Callback declarations static bool _drawing_handler (GdkEvent *event, Inkscape::DrawingItem *item, SPDesktop *desktop); static void _reconstruction_start(SPDesktop * desktop); static void _reconstruction_finish(SPDesktop * desktop); static gdouble _pinch_begin_zoom = 1.; static void _pinch_begin_handler(GtkGesture *gesture, GdkEventSequence *sequence, SPDesktop *desktop) { _pinch_begin_zoom = desktop->current_zoom(); } static void _pinch_scale_changed_handler(GtkGesture *gesture, gdouble delta, SPDesktop *desktop) { GdkEventSequence *sequence = gtk_gesture_get_last_updated_sequence(gesture); const GdkEvent *event = gtk_gesture_get_last_event(gesture, sequence); Geom::Point button_window(event->button.x, event->button.y); Geom::Point button_world = desktop->getCanvas()->canvas_to_world(button_window); Geom::Point button_dt(desktop->w2d(button_world)); desktop->zoom_absolute(button_dt, _pinch_begin_zoom * delta); } SPDesktop::SPDesktop() : namedview(nullptr) , canvas(nullptr) , selection(nullptr) , temporary_item_list(nullptr) , snapindicator(nullptr) , current(nullptr) // current style , _focusMode(false) , dkey(0) , window_state(0) , interaction_disabled_counter(0) , waiting_cursor(false) , showing_dialogs(false) , guides_active(false) , gr_item(nullptr) , gr_point_type(POINT_LG_BEGIN) , gr_point_i(0) , gr_fill_or_stroke(Inkscape::FOR_FILL) , _reconstruction_old_layer_id() // an id attribute is not allowed to be the empty string , _widget(nullptr) // DesktopWidget , _guides_message_context(nullptr) , _active(false) , _image_render_observer(this, "/options/rendering/imageinoutlinemode") , grids_visible(false) { _layer_manager = std::make_unique(this); selection = Inkscape::GC::release(new Inkscape::Selection(this)); } void SPDesktop::init (SPNamedView *nv, Inkscape::UI::Widget::Canvas *acanvas, SPDesktopWidget *widget) { namedview = nv; canvas = acanvas; _widget = widget; // Temporary workaround for link order issues: Inkscape::DeviceManager::getManager().getDevices(); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); _guides_message_context = std::unique_ptr(new Inkscape::MessageContext(messageStack())); current = prefs->getStyle("/desktop/style"); SPDocument *document = namedview->document; /* XXX: * ensureUpToDate() sends a 'modified' signal to the root element. * This is reportedly required to prevent flickering after the document * loads. However, many SPObjects write to their repr in response * to this signal. This is apparently done to support live path effects, * which rewrite their result paths after each modification of the base object. * This causes the generation of an incomplete undo transaction, * which causes problems down the line, including crashes in the * Undo History dialog. * * For now, this is handled by disabling undo tracking during this call. * A proper fix would involve modifying the way ensureUpToDate() works, * so that the LPE results are not rewritten. */ Inkscape::DocumentUndo::setUndoSensitive(document, false); document->ensureUpToDate(); Inkscape::DocumentUndo::setUndoSensitive(document, true); dkey = SPItem::display_key_new(1); /* Connect document */ setDocument (document); namedview->viewcount++; /* Setup Canvas */ namedview->set_desk_color(this); // Background page sits on. /* ----------- Canvas Items ------------ */ /* CanvasItem's: Controls/Grids/etc. Canvas items are owned by the canvas through * canvas_item_root. Canvas items are automatically added and removed from the tree when * created and deleted (as long as a canvas item group is passed in the constructor). * It would probably make sense to move most of this code to the Canvas. */ Inkscape::CanvasItemGroup *canvas_item_root = canvas->get_canvas_item_root(); // The order in which these canvas items are added determines the z-order. It's therefore // important to add the tempgroup (which will contain the snapindicator) before adding the // controls. Only this way one will be able to quickly (before the snap indicator has // disappeared) reselect a node after snapping it. If the z-order is wrong however, this // will not work (the snap indicator is on top of the node handler; is the snapindicator // being selected? or does it intercept some of the events that should have gone to the // node handler? see bug https://bugs.launchpad.net/inkscape/+bug/414142) canvas_catchall = new Inkscape::CanvasItemCatchall(canvas_item_root); // Lowest item! canvas_group_pages_bg = new Inkscape::CanvasItemGroup(canvas_item_root); canvas_group_drawing = new Inkscape::CanvasItemGroup(canvas_item_root); canvas_group_pages_fg = new Inkscape::CanvasItemGroup(canvas_item_root); canvas_group_grids = new Inkscape::CanvasItemGroup(canvas_item_root); canvas_group_guides = new Inkscape::CanvasItemGroup(canvas_item_root); canvas_group_sketch = new Inkscape::CanvasItemGroup(canvas_item_root); canvas_group_temp = new Inkscape::CanvasItemGroup(canvas_item_root); canvas_group_controls = new Inkscape::CanvasItemGroup(canvas_item_root); canvas_group_pages_bg->set_name("CanvasItemGroup:PagesBg"); // Page backgrounds canvas_group_drawing->set_name("CanvasItemGroup:Drawing"); // The actual SVG drawing. canvas_group_pages_fg->set_name("CanvasItemGroup:PagesFg"); // Page borders, when on top. canvas_group_grids->set_name("CanvasItemGroup:Grids"); // Grids. canvas_group_guides->set_name("CanvasItemGroup:Guides"); // Guides. canvas_group_sketch->set_name("CanvasItemGroup:Sketch"); // Temporary items before becoming permanent. canvas_group_temp->set_name("CanvasItemGroup:Temp"); // Temporary items that disappear by themselves. canvas_group_controls->set_name("CanvasItemGroup:Controls"); // Controls (handles, knots, rectangles, etc.). canvas_group_sketch->set_pickable(false); // Temporary items are not pickable! canvas_group_temp->set_pickable(false); // Temporary items are not pickable! // The root should never emit events. The "catchall" should get it! (CHECK) canvas_item_root->connect_event(sigc::bind(sigc::ptr_fun(sp_desktop_root_handler), this)); canvas_catchall->connect_event(sigc::bind(sigc::ptr_fun(sp_desktop_root_handler), this)); // Drawing Geom::Rect const d(Geom::Point(0.0, 0.0), Geom::Point(document->getWidth().value("px"), document->getHeight().value("px"))); canvas_drawing = new Inkscape::CanvasItemDrawing(canvas_group_drawing); canvas_drawing->get_drawing()->delta = prefs->getDouble("/options/cursortolerance/value", 1.0); canvas_drawing->connect_drawing_event(sigc::bind(sigc::ptr_fun(_drawing_handler), this)); canvas->set_drawing(canvas_drawing->get_drawing()); // Canvas needs access. Inkscape::DrawingItem *drawing_item = document->getRoot()->invoke_show( *(canvas_drawing->get_drawing()), dkey, SP_ITEM_SHOW_DISPLAY); if (drawing_item) { canvas_drawing->get_drawing()->root()->prependChild(drawing_item); } // Must be the top most item. canvas_rotate = new Inkscape::CanvasItemRotate(canvas_item_root); canvas_rotate->hide(); temporary_item_list = new Inkscape::Display::TemporaryItemList( this ); snapindicator = new Inkscape::Display::SnapIndicator ( this ); /* --------- End Canvas Items ----------- */ namedview->show(this); /* Ugly hack */ activate_guides (true); // Set the select tool as the active tool. setEventContext("/tools/select"); // display rect and zoom are now handled in sp_desktop_widget_realize() // pinch zoom zoomgesture = gtk_gesture_zoom_new(GTK_WIDGET(canvas->gobj())); gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (zoomgesture), GTK_PHASE_CAPTURE); g_signal_connect(zoomgesture, "begin", G_CALLBACK(_pinch_begin_handler), this); g_signal_connect(zoomgesture, "scale-changed", G_CALLBACK(_pinch_scale_changed_handler), 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.clear(); showGrids(namedview->grids_visible, false); } void SPDesktop::destroy() { _destroy_signal.emit(this); canvas->set_drawing(nullptr); // Ensures deactivation canvas->set_desktop(nullptr); // Todo: Remove desktop dependency. if (event_context) { delete event_context; event_context = nullptr; } if (snapindicator) { delete snapindicator; snapindicator = nullptr; } if (temporary_item_list) { delete temporary_item_list; temporary_item_list = nullptr; } if (selection) { delete selection; selection = nullptr; } namedview->hide(this); _sel_changed_connection.disconnect(); _reconstruction_start_connection.disconnect(); _reconstruction_finish_connection.disconnect(); if (zoomgesture) { g_signal_handlers_disconnect_by_data(zoomgesture, this); g_clear_object(&zoomgesture); } if (canvas_drawing) { doc()->getRoot()->invoke_hide(dkey); delete canvas_drawing; // Why is canvas_drawing special? canvas_drawing = nullptr; } _guides_message_context = nullptr; } SPDesktop::~SPDesktop() = default; //-------------------------------------------------------------------- /* Public methods */ /* These methods help for temporarily showing things on-canvas. * The *only* valid use of the TemporaryItem* that you get from add_temporary_canvasitem * is when you want to prematurely remove the item from the canvas, by calling * desktop->remove_temporary_canvasitem(tempitem). */ /** Note that lifetime is measured in milliseconds * One should *not* keep a reference to the SPCanvasItem, the temporary item code will * delete the object for you and the reference will become invalid without you knowing it. * It is perfectly safe to ignore the returned pointer: the object is deleted by itself, so don't delete it elsewhere! * The *only* valid use of the returned TemporaryItem* is as argument for SPDesktop::remove_temporary_canvasitem, * because the object might be deleted already without you knowing it. * 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 (Inkscape::CanvasItem *item, guint lifetime, bool move_to_bottom) { if (move_to_bottom) { item->lower_to_bottom(); } 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::redrawDesktop() { canvas->set_affine(_current_affine.d2w()); // For CanvasItem's. } /** * True if desktop viewport intersects \a item's bbox. */ bool SPDesktop::isWithinViewport (SPItem *item) const { auto const viewport = get_display_area(); Geom::OptRect const bbox = item->desktopVisualBounds(); if (bbox) { return viewport.intersects(*bbox); } else { return false; } } /// bool SPDesktop::itemIsHidden(SPItem const *item) const { return item->isHidden(this->dkey); } /** * 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 != nullptr); /* unselect everything before switching documents */ selection->clear(); // Reset any tool actions currently in progress. setEventContext(event_context->getPrefsPath()); 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) */ InkscapeWindow *parent = this->getInkscapeWindow(); g_assert(parent != nullptr); parent->change_document(theDocument); SPDesktopWidget *dtw = parent->get_desktop_widget(); if (dtw) { dtw->desktop = this; dtw->updateNamedview(); } else { std::cerr << "SPDesktop::change_document: failed to get desktop widget!" << std::endl; } } /** * Replaces the currently active tool with a new one. Pass the empty string to * unset and free the current tool. */ void SPDesktop::setEventContext(const std::string& toolName) { // Tool should be able to be replaced with itself. See commit 29df5ca05d if (event_context) { delete event_context; event_context = nullptr; } if (!toolName.empty()) { event_context = ToolFactory::createObject(this, toolName); } _event_context_changed_signal.emit(this, event_context); } /** * Sets the coordinate status to a given point */ void SPDesktop::set_coordinate_status (Geom::Point p) { _widget->setCoordinateStatus(p); } Inkscape::UI::Dialog::DialogContainer *SPDesktop::getContainer() { return _widget->getDialogContainer(); } /** * \see SPDocument::getItemFromListAtPointBottom() */ SPItem *SPDesktop::getItemFromListAtPointBottom(const std::vector &list, Geom::Point const &p) const { g_return_val_if_fail (doc() != nullptr, NULL); return SPDocument::getItemFromListAtPointBottom(dkey, doc()->getRoot(), list, p); } /** * \see SPDocument::getItemAtPoint() */ SPItem *SPDesktop::getItemAtPoint(Geom::Point const &p, bool into_groups, SPItem *upto) const { g_return_val_if_fail (doc() != nullptr, NULL); return doc()->getItemAtPoint( dkey, p, into_groups, upto); } /** * \see SPDocument::getGroupAtPoint() */ SPItem *SPDesktop::getGroupAtPoint(Geom::Point const &p) const { g_return_val_if_fail (doc() != nullptr, NULL); return doc()->getGroupAtPoint(dkey, p); } /** * Returns the mouse point in document coordinates; if mouse is * outside the canvas, returns the center of canvas viewpoint. */ Geom::Point SPDesktop::point(bool outside_canvas) const { Geom::Point p = _widget->window_get_pointer(); Geom::Point pw = canvas->canvas_to_world(p); Geom::Rect const r = canvas->get_area_world(); if (r.interiorContains(pw) || outside_canvas) { p = w2d(pw); return p; } Geom::Point r0 = w2d(r.min()); Geom::Point r1 = w2d(r.max()); return (r0 + r1) / 2.0; } /** * Revert back to previous transform if possible. Note: current transform is * always at front of stack. */ void SPDesktop::prev_transform() { if (transforms_past.empty()) { std::cerr << "SPDesktop::prev_transform: current transform missing!" << std::endl; return; } if (transforms_past.size() == 1) { messageStack()->flash(Inkscape::WARNING_MESSAGE, _("No previous transform.")); return; } // Push current transform into future transforms list. transforms_future.push_front( _current_affine ); // Remove the current transform from the past transforms list. transforms_past.pop_front(); // restore previous transform _current_affine = transforms_past.front(); set_display_area (false); } /** * Set transform to next in list. */ void SPDesktop::next_transform() { if (transforms_future.empty()) { this->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("No next transform.")); return; } // restore next transform _current_affine = transforms_future.front(); set_display_area (false); // remove the just-used transform from the future transforms list transforms_future.pop_front(); // push current transform into past transforms list transforms_past.push_front( _current_affine ); } /** * Clear transform lists. */ void SPDesktop::clear_transform_history() { transforms_past.clear(); transforms_future.clear(); } /** * Does all the dirty work in setting the display area. * _current_affine must already be full updated (including offset). * log: if true, save transform in transform stack for reuse. */ void SPDesktop::set_display_area (bool log) { // Save the transform if (log) { transforms_past.push_front( _current_affine ); // if we do a logged transform, our transform-forward list is invalidated, so delete it transforms_future.clear(); } // Scroll Geom::Point offset = _current_affine.getOffset(); canvas->set_pos(offset); canvas->set_affine(_current_affine.d2w()); // For CanvasItem's. /* Update perspective lines if we are in the 3D box tool (so that infinite ones are shown * correctly) */ if (SP_IS_BOX3D_CONTEXT(event_context)) { SP_BOX3D_CONTEXT(event_context)->_vpdrag->updateLines(); } // Update GUI (TODO: should be handled by CanvasGrid). _widget->update_rulers(); _widget->update_scrollbars(_current_affine.getZoom()); _widget->update_zoom(); _widget->update_rotation(); signal_zoom_changed.emit(_current_affine.getZoom()); // Observed by path-manipulator to update arrows. } /** * Map the drawing to the window so that 'c' lies at 'w' where where 'c' * is a point on the canvas and 'w' is position in window in screen pixels. */ void SPDesktop::set_display_area (Geom::Point const &c, Geom::Point const &w, bool log) { // The relative offset needed to keep c at w. Geom::Point offset = d2w(c) - w; _current_affine.addOffset( offset ); set_display_area( log ); } /** * Map the center of rectangle 'r' (which specifies a non-rotated region of the * drawing) to lie at the center of the window. The zoom factor is calculated such that * the edges of 'r' closest to 'w' are 'border' length inside of the window (if * there is no rotation). 'r' is in document pixel units, 'border' is in screen pixels. */ void SPDesktop::set_display_area( Geom::Rect const &r, double border, bool log) { // Create a rectangle the size of the window aligned with origin. Geom::Rect w( Geom::Point(), canvas->get_dimensions() ); // Shrink window to account for border padding. w.expandBy( -border ); double zoom = 1.0; // Determine which direction limits scale: // if (r.width/w.width > r.height/w.height) then zoom using width. // Avoiding division in test: if ( r.width()*w.height() > r.height()*w.width() ) { zoom = w.width() / r.width(); } else { zoom = w.height() / r.height(); } zoom = CLAMP(zoom, SP_DESKTOP_ZOOM_MIN, SP_DESKTOP_ZOOM_MAX); _current_affine.setScale( Geom::Scale(zoom, yaxisdir() * zoom) ); // Zero offset, actual offset calculated later. _current_affine.setOffset( Geom::Point( 0, 0 ) ); set_display_area( r.midpoint(), w.midpoint(), log ); } /** * Return canvas viewbox in desktop coordinates */ Geom::Parallelogram SPDesktop::get_display_area() const { // viewbox in world coordinates Geom::Rect const viewbox = canvas->get_area_world(); // display area in desktop coordinates return Geom::Parallelogram(viewbox) * w2d(); } /** * Zoom to the given absolute zoom level * * @param center - Point we want to zoom in on * @param zoom - Absolute amount of zoom (1.0 is 100%) * @param keep_point - Keep center fixed in the desktop window. */ void SPDesktop::zoom_absolute(Geom::Point const ¢er, double zoom, bool keep_point) { Geom::Point w = d2w(center); // Must be before zoom changed. if(!keep_point) { w = canvas->get_area_world().midpoint(); } zoom = CLAMP (zoom, SP_DESKTOP_ZOOM_MIN, SP_DESKTOP_ZOOM_MAX); _current_affine.setScale( Geom::Scale(zoom, yaxisdir() * zoom) ); set_display_area( center, w ); } /** * Zoom in or out relatively to the current zoom * * @param center - Point we want to zoom in on * @param zoom - Relative amount of zoom. at 50% + 50% -> 25% zoom * @param keep_point - Keep center fixed in the desktop window. */ void SPDesktop::zoom_relative(Geom::Point const ¢er, double zoom, bool keep_point) { double new_zoom = _current_affine.getZoom() * zoom; this->zoom_absolute(center, new_zoom, keep_point); } /** * Zoom in to an absolute realworld ratio, e.g. 1:1 physical screen units * * @param center - Point we want to zoom in on. * @param ratio - Absolute physical zoom ratio. */ void SPDesktop::zoom_realworld(Geom::Point const ¢er, double ratio) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); double correction = prefs->getDouble("/options/zoomcorrection/value", 1.0); this->zoom_absolute(center, ratio * correction, false); } /** * Set display area in only the width dimension. */ void SPDesktop::set_display_width(Geom::Rect const &rect, Geom::Coord border) { if (rect.width() < 1.0) return; auto const center_y = current_center().y(); set_display_area(Geom::Rect( Geom::Point(rect.left(), center_y), Geom::Point(rect.width(), center_y)), border); } /** * Centre Rect, without zooming */ void SPDesktop::set_display_center(Geom::Rect const &rect) { zoom_absolute(rect.midpoint(), this->current_zoom(), false); } /** * Zoom to whole drawing. */ void SPDesktop::zoom_drawing() { g_return_if_fail (doc() != nullptr); SPItem *docitem = doc()->getRoot(); g_return_if_fail (docitem != nullptr); docitem->bbox_valid = FALSE; Geom::OptRect d = docitem->desktopVisualBounds(); /* Note that the second condition here indicates that ** there are no items in the drawing. */ if ( !d || d->minExtent() < 0.1 ) { return; } set_display_area(*d, 10); } /** * Zoom to selection. */ void SPDesktop::zoom_selection() { Geom::OptRect const d = selection->visualBounds(); if ( !d || d->minExtent() < 0.1 ) { return; } set_display_area(*d, 10); } Geom::Point SPDesktop::current_center() const { return Geom::Rect(canvas->get_area_world()).midpoint() * _current_affine.w2d(); } /** * Performs a quick zoom into what the user is working on. * * @param enable Whether we're going in or out of quick zoom. */ void SPDesktop::zoom_quick(bool enable) { if (enable == _quick_zoom_enabled) { return; } if (enable) { _quick_zoom_affine = _current_affine; bool zoomed = false; // TODO This needs to migrate into the node tool, but currently the design // of this method is sufficiently wrong to prevent this. if (!zoomed && INK_IS_NODE_TOOL(event_context)) { Inkscape::UI::Tools::NodeTool *nt = static_cast(event_context); if (!nt->_selected_nodes->empty()) { Geom::Rect nodes = *nt->_selected_nodes->bounds(); double area = nodes.area(); // do not zoom if a single cusp node is selected aand the bounds // have zero area. if (!Geom::are_near(area, 0)) { set_display_area(nodes, true); zoomed = true; } } } if (!zoomed) { Geom::OptRect const d = selection->visualBounds(); if (d) { set_display_area(*d, true); zoomed = true; } } if (!zoomed) { Geom::Rect const d_canvas = canvas->get_area_world(); Geom::Point midpoint = w2d(d_canvas.midpoint()); // Midpoint of drawing on canvas. zoom_relative(midpoint, 2.0, false); } } else { _current_affine = _quick_zoom_affine; set_display_area( false ); } _quick_zoom_enabled = enable; return; } /** * Tell widget to let zoom widget grab keyboard focus. */ void SPDesktop::zoom_grab_focus() { _widget->letZoomGrabFocus(); } /** * Set new rotation, keeping the point 'c' fixed in the desktop window. * * @param c Point in desktop coordinates * @param rotate Angle in clockwise direction */ void SPDesktop::rotate_absolute_keep_point (Geom::Point const &c, double rotate) { Geom::Point w = d2w( c ); // Must be before rotate changed. _current_affine.setRotate( rotate ); set_display_area( c, w ); } /** * Rotate keeping the point 'c' fixed in the desktop window. * * @param c Point in desktop coordinates * @param rotate Angle in clockwise direction */ void SPDesktop::rotate_relative_keep_point (Geom::Point const &c, double rotate) { Geom::Point w = d2w( c ); // Must be before rotate changed. _current_affine.addRotate( rotate ); set_display_area( c, w ); } /** * Set new rotation, aligning the point 'c' to the center of desktop window. * * @param c Point in desktop coordinates * @param rotate Angle in clockwise direction */ void SPDesktop::rotate_absolute_center_point (Geom::Point const &c, double rotate) { _current_affine.setRotate( rotate ); Geom::Rect viewbox = canvas->get_area_world(); set_display_area(c, viewbox.midpoint()); } /** * Rotate aligning the point 'c' to the center of desktop window. * * @param c Point in desktop coordinates * @param rotate Angle in clockwise direction */ void SPDesktop::rotate_relative_center_point (Geom::Point const &c, double rotate) { _current_affine.addRotate( rotate ); Geom::Rect viewbox = canvas->get_area_world(); set_display_area(c, viewbox.midpoint()); } /** * Set new flip direction, keeping the point 'c' fixed in the desktop window. * * @param c Point in desktop coordinates * @param flip Direction the canvas will be set as. */ void SPDesktop::flip_absolute_keep_point (Geom::Point const &c, CanvasFlip flip) { Geom::Point w = d2w(c); // Must be before flip. _current_affine.setFlip(flip); set_display_area(c, w); } /** * Flip direction, keeping the point 'c' fixed in the desktop window. * * @param c Point in desktop coordinates * @param flip Direction to flip canvas */ void SPDesktop::flip_relative_keep_point (Geom::Point const &c, CanvasFlip flip) { Geom::Point w = d2w(c); // Must be before flip. _current_affine.addFlip(flip); set_display_area(c, w); } /** * Set new flip direction, aligning the point 'c' to the center of desktop window. * * @param c Point in desktop coordinates * @param flip Direction the canvas will be set as. */ void SPDesktop::flip_absolute_center_point (Geom::Point const &c, CanvasFlip flip) { _current_affine.setFlip(flip); Geom::Rect viewbox = canvas->get_area_world(); set_display_area(c, viewbox.midpoint()); } /** * Flip direction, aligning the point 'c' to the center of desktop window. * * @param c Point in desktop coordinates * @param flip Direction to flip canvas */ void SPDesktop::flip_relative_center_point (Geom::Point const &c, CanvasFlip flip) { _current_affine.addFlip(flip); Geom::Rect viewbox = canvas->get_area_world(); set_display_area(c, viewbox.midpoint()); } bool SPDesktop::is_flipped (CanvasFlip flip) { return _current_affine.isFlipped(flip); } /** * Scroll canvas by to a particular point (window coordinates). */ void SPDesktop::scroll_absolute (Geom::Point const &point, bool is_scrolling) { canvas->set_pos(point); _current_affine.setOffset( point ); /* 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); if (SP_IS_BOX3D_CONTEXT(event_context)) { SP_BOX3D_CONTEXT(event_context)->_vpdrag->updateLines(); } _widget->update_rulers(); _widget->update_scrollbars(_current_affine.getZoom()); } /** * Scroll canvas by specific coordinate amount (window coordinates). */ void SPDesktop::scroll_relative (Geom::Point const &delta, bool is_scrolling) { Geom::Rect const viewbox = canvas->get_area_world(); scroll_absolute( viewbox.min() - delta, is_scrolling ); } /** * Scroll canvas by specific coordinate amount in svg coordinates. */ void SPDesktop::scroll_relative_in_svg_coords (double dx, double dy, bool is_scrolling) { double scale = _current_affine.getZoom(); scroll_relative(Geom::Point(dx*scale, dy*scale), is_scrolling); } /** * Scroll screen so as to keep point 'p' visible in window. * (Used, for example, when a node is being dragged.) * 'p': The point in desktop coordinates. * 'autoscrollspeed': The scroll speed (or zero to use preferences' value). */ bool SPDesktop::scroll_to_point (Geom::Point const &p, gdouble autoscrollspeed) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); // autoscrolldistance is in screen pixels. gdouble autoscrolldistance = (gdouble) prefs->getIntLimited("/options/autoscrolldistance/value", 0, -1000, 10000); Geom::Rect w = canvas->get_area_world(); // Window in screen coordinates. w.expandBy(-autoscrolldistance); // Shrink window Geom::Point c = d2w(p); // Point 'p' in screen coordinates. if (!w.contains(c)) { Geom::Point c2 = w.clamp(c); // Constrain c to window. if (autoscrollspeed == 0) autoscrollspeed = prefs->getDoubleLimited("/options/autoscrollspeed/value", 1, 0, 10); if (autoscrollspeed != 0) scroll_relative (autoscrollspeed * (c2 - c) ); return true; } return false; } bool SPDesktop::is_iconified() { return 0!=(window_state & GDK_WINDOW_STATE_ICONIFIED); } void SPDesktop::iconify() { _widget->iconify(); } bool SPDesktop::is_darktheme() { return getToplevel()->get_style_context()->has_class("dark"); } bool SPDesktop::is_maximized() { return 0!=(window_state & GDK_WINDOW_STATE_MAXIMIZED); } void SPDesktop::maximize() { _widget->maximize(); } bool SPDesktop::is_fullscreen() { return 0!=(window_state & GDK_WINDOW_STATE_FULLSCREEN); } void SPDesktop::fullscreen() { _widget->fullscreen(); } /** * Checks to see if the user is working in focused mode. * * @return the value of \c _focusMode. */ bool SPDesktop::is_focusMode() { return _focusMode; } /** * Changes whether the user is in focus mode or not. * * @param mode Which mode the view should be in. */ void SPDesktop::focusMode(bool mode) { if (mode == _focusMode) { return; } _focusMode = mode; layoutWidget(); //sp_desktop_widget_layout(SPDesktopWidget); return; } void SPDesktop::setWindowTitle() { _widget->updateTitle(doc()->getDocumentName()); } void SPDesktop::getWindowGeometry (gint &x, gint &y, gint &w, gint &h) { _widget->getWindowGeometry (x, y, w, h); } void SPDesktop::setWindowPosition (Geom::Point p) { _widget->setWindowPosition (p); } void SPDesktop::setWindowSize (gint w, gint h) { _widget->setWindowSize (w, h); } void SPDesktop::setWindowTransient (void *p, int transient_policy) { _widget->setWindowTransient (p, transient_policy); } Gtk::Window* SPDesktop::getToplevel( ) { return _widget->window; } InkscapeWindow* SPDesktop::getInkscapeWindow( ) { return dynamic_cast(_widget->window); } void SPDesktop::presentWindow() { _widget->presentWindow(); } bool SPDesktop::showInfoDialog( Glib::ustring const & message ) { return _widget->showInfoDialog( message ); } bool SPDesktop::warnDialog (Glib::ustring const &text) { return _widget->warnDialog (text); } void SPDesktop::toggleCommandPalette() { _widget->toggle_command_palette(); } void SPDesktop::toggleRulers() { _widget->toggle_rulers(); } void SPDesktop::toggleScrollbars() { _widget->toggle_scrollbars(); } void SPDesktop::toggleToolbar(gchar const *toolbar_name) { Glib::ustring pref_path = getLayoutPrefPath(this) + toolbar_name + "/state"; Inkscape::Preferences *prefs = Inkscape::Preferences::get(); gboolean visible = prefs->getBool(pref_path, true); prefs->setBool(pref_path, !visible); layoutWidget(); } void SPDesktop::layoutWidget() { _widget->layoutWidgets(); } /** * 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(); view_set_gui(getInkscapeWindow()); // Updates View menu } return false; } /** * Apply the desktop's current style or the tool style to the object. */ void SPDesktop::applyCurrentOrToolStyle(SPObject *obj, Glib::ustring const &tool_path, bool with_text) { SPCSSAttr *css_current = sp_desktop_get_style(this, with_text); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); if (prefs->getBool(tool_path + "/usecurrent") && css_current) { obj->setCSS(css_current,"style"); } else { SPCSSAttr *css = prefs->getInheritedStyle(tool_path + "/style"); obj->setCSS(css,"style"); sp_repr_css_attr_unref(css); } if (css_current) { sp_repr_css_attr_unref(css_current); } } void SPDesktop::setToolboxFocusTo (gchar const *label) { _widget->setToolboxFocusTo (label); } void SPDesktop::setToolboxAdjustmentValue (gchar const* id, double val) { _widget->setToolboxAdjustmentValue (id, val); } Gtk::Toolbar* SPDesktop::get_toolbar_by_name(const Glib::ustring& name) { return _widget->get_toolbar_by_name(name); } Gtk::Widget *SPDesktop::get_toolbox() const { return _widget->get_tool_toolbox(); } bool SPDesktop::isToolboxButtonActive (gchar const *id) { return _widget->isToolboxButtonActive (id); } void SPDesktop::emitToolSubselectionChanged(gpointer data) { emitToolSubselectionChangedEx(data, nullptr); } void SPDesktop::emitToolSubselectionChangedEx(gpointer data, SPObject* object) { _tool_subselection_changed.emit(data, object); } sigc::connection SPDesktop::connectToolSubselectionChanged(const sigc::slot& slot) { return _tool_subselection_changed.connect([=](gpointer ptr, SPObject*) { slot(ptr); }); } sigc::connection SPDesktop::connectToolSubselectionChangedEx(const sigc::slot& slot) { return _tool_subselection_changed.connect(slot); } void SPDesktop::updateDialogs() { getContainer()->set_inkscape_window(getInkscapeWindow()); } void SPDesktop::enableInteraction() { _widget->enableInteraction(); } void SPDesktop::disableInteraction() { _widget->disableInteraction(); } void SPDesktop::setWaitingCursor() { auto window = canvas->get_window(); if (!window) { return; } Glib::RefPtr display = Gdk::Display::get_default(); Glib::RefPtr waiting = Gdk::Cursor::create(display, "wait"); window->set_cursor(waiting); // GDK needs the flush for the cursor change to take effect display->flush(); waiting_cursor = true; } void SPDesktop::clearWaitingCursor() { if (waiting_cursor && this->event_context) { this->event_context->use_tool_cursor(); } } void SPDesktop::toggleColorProfAdjust() { _widget->toggle_color_prof_adj(); } void SPDesktop::toggleLockGuides() { namedview->toggleLockGuides(); } bool SPDesktop::colorProfAdjustEnabled() { return _widget->get_color_prof_adj_enabled(); } void SPDesktop::toggleGrids() { if (! namedview->grids.empty()) { showGrids(!grids_visible); } else { //there is no grid present at the moment. add a rectangular grid and make it visible namedview->writeNewGrid(this->getDocument(), 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) { canvas_group_grids->show(); } else { canvas_group_grids->hide(); } } //---------------------------------------------------------------------- // Callback implementations. The virtual ones are connected by the view. void SPDesktop::onResized (double /*x*/, double /*y*/) { // Nothing called here } /** * Redraw callback; queues Gtk redraw; connected by View. */ void SPDesktop::onRedrawRequested () { if (_widget) { _widget->requestCanvasUpdate(); } } void SPDesktop::updateCanvasNow() { _widget->requestCanvasUpdateAndWait(); } /** * Associate document with desktop. */ void SPDesktop::setDocument (SPDocument *doc) { if (!doc) return; if (this->doc()) { namedview->hide(this); this->doc()->getRoot()->invoke_hide(dkey); } selection->setDocument(doc); /// \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 (canvas_drawing) { namedview = doc->getNamedView(); namedview->viewcount++; Inkscape::DrawingItem *drawing_item = doc->getRoot()->invoke_show( *(canvas_drawing->get_drawing()), dkey, SP_ITEM_SHOW_DISPLAY); if (drawing_item) { canvas_drawing->get_drawing()->root()->prependChild(drawing_item); } namedview->show(this); /* Ugly hack */ activate_guides (true); } // set new document before firing signal, so handlers can see new value if they query desktop View::setDocument(doc); _document_replaced_signal.emit (this, doc); } void SPDesktop::onStatusMessage (Inkscape::MessageType type, gchar const *message) { if (_widget) { _widget->setMessage(type, message); } } void SPDesktop::onDocumentFilenameSet (gchar const* filename) { _widget->updateTitle(filename); } /** * Calls event handler of current event context. */ static bool _drawing_handler (GdkEvent *event, Inkscape::DrawingItem *drawing_item, SPDesktop *desktop) { if (event->type == GDK_KEY_PRESS && Inkscape::UI::Tools::get_latin_keyval(&event->key) == GDK_KEY_space && desktop->event_context->is_space_panning()) { return true; } if (auto ec = desktop->event_context) { if (drawing_item) { return ec->start_item_handler(drawing_item->getItem(), event); } else { return ec->start_root_handler(event); } } return false; } /// Called when document is starting to be rebuilt. static void _reconstruction_start(SPDesktop * desktop) { auto layer = desktop->layerManager().currentLayer(); desktop->_reconstruction_old_layer_id = layer->getId() ? layer->getId() : ""; desktop->layerManager().reset(); desktop->selection->clear(); } /// Called when document rebuild is finished. static void _reconstruction_finish(SPDesktop * desktop) { g_debug("Desktop, finishing reconstruction\n"); if ( !desktop->_reconstruction_old_layer_id.empty() ) { SPObject * newLayer = desktop->namedview->document->getObjectById(desktop->_reconstruction_old_layer_id); if (newLayer != nullptr) { desktop->layerManager().setCurrentLayer(newLayer); } desktop->_reconstruction_old_layer_id.clear(); } g_debug("Desktop, finishing reconstruction end\n"); } Geom::Affine SPDesktop::w2d() const { return _current_affine.w2d(); } Geom::Point SPDesktop::w2d(Geom::Point const &p) const { return p * _current_affine.w2d(); } Geom::Point SPDesktop::d2w(Geom::Point const &p) const { return p * _current_affine.d2w(); } const Geom::Affine &SPDesktop::doc2dt() const { g_assert(doc() != nullptr); return doc()->doc2dt(); } Geom::Affine SPDesktop::dt2doc() const { g_assert(doc() != nullptr); return doc()->dt2doc(); } Geom::Point SPDesktop::doc2dt(Geom::Point const &p) const { return p * doc2dt(); } Geom::Point SPDesktop::dt2doc(Geom::Point const &p) const { return p * dt2doc(); } sigc::connection SPDesktop::connect_gradient_stop_selected(const sigc::slot& slot) { return _gradient_stop_selected.connect(slot); } sigc::connection SPDesktop::connect_control_point_selected(const sigc::slot& slot) { return _control_point_selected.connect(slot); } sigc::connection SPDesktop::connect_text_cursor_moved(const sigc::slot& slot) { return _text_cursor_moved.connect(slot); } void SPDesktop::emit_gradient_stop_selected(void* sender, SPStop* stop) { _gradient_stop_selected.emit(sender, stop); } void SPDesktop::emit_control_point_selected(void* sender, Inkscape::UI::ControlPointSelection* selection) { _control_point_selected.emit(sender, selection); } void SPDesktop::emit_text_cursor_moved(void* sender, Inkscape::UI::Tools::TextTool* tool) { _text_cursor_moved.emit(sender, tool); } /* * Pop event context from desktop's context stack. Never used. */ // void // SPDesktop::pop_event_context (unsigned int key) // { // ToolBase *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); // } // // ToolBase *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:fileencoding=utf-8:textwidth=99 :