/* * Connector creation tool * * Authors: * Michael Wybrow * * Copyright (C) 2005-2008 Michael Wybrow * Copyright (C) 2009 Monash University * * Released under GNU GPL, read the file 'COPYING' for more information * * TODO: * o Show a visual indicator for objects with the 'avoid' property set. * o Allow user to change a object between a path and connector through * the interface. * o Create an interface for setting markers (arrow heads). * o Better distinguish between paths and connectors to prevent problems * in the node tool and paths accidentally being turned into connectors * in the connector tool. Perhaps have a way to convert between. * o Only call libavoid's updateEndPoint as required. Currently we do it * for both endpoints, even if only one is moving. * o Allow user-placeable connection points. * o Deal sanely with connectors with both endpoints attached to the * same connection point, and drawing of connectors attaching * overlapping shapes (currently tries to adjust connector to be * outside both bounding boxes). * o Fix many special cases related to connectors updating, * e.g., copying a couple of shapes and a connector that are * attached to each other. * e.g., detach connector when it is moved or transformed in * one of the other contexts. * o Cope with shapes whose ids change when they have attached * connectors. * o During dragging motion, gobble up to and use the final motion event. * Gobbling away all duplicates after the current can occasionally result * in the path lagging behind the mouse cursor if it is no longer being * dragged. * o Fix up libavoid's representation after undo actions. It doesn't see * any transform signals and hence doesn't know shapes have moved back to * there earlier positions. * o Decide whether drawing/editing mode should be an Inkscape preference * or the connector tool should always start in drawing mode. * o Correct the problem with switching to the select tool when pressing * space bar (there are moments when it refuses to do so). * * ---------------------------------------------------------------------------- * * mjwybrow's observations on acracan's Summer of Code connector work: * * - GUI comments: * * - Buttons for adding and removing user-specified connection * points should probably have "+" and "-" symbols on them so they * are consistent with the similar buttons for the node tool. * - Controls on the connector tool be should be reordered logically, * possibly as follows: * * *Connector*: [Polyline-radio-button] [Orthgonal-radio-button] * [Curvature-control] | *Shape*: [Avoid-button] [Dont-avoid-button] * [Spacing-control] | *Connection pts*: [Edit-mode] [Add-pt] [Rm-pt] * * I think that the network layout controls be moved to the * Align and Distribute dialog (there is already the layout button * there, but no options are exposed). * * I think that the style change between polyline and orthogonal * would be much clearer with two buttons (radio behaviour -- just * one is true). * * The other tools show a label change from "New:" to "Change:" * depending on whether an object is selected. We could consider * this but there may not be space. * * The Add-pt and Rm-pt buttons should be greyed out (inactive) if * we are not in connection point editing mode. And probably also * if there is no shape selected, i.e. at the times they have no * effect when clicked. * * Likewise for the avoid/ignore shapes buttons. These should be * inactive when a shape is not selected in the connector context. * * - When creating/editing connection points: * * - Strange things can happen if you have connectors selected, or * try rerouting connectors by dragging their endpoints when in * connection point editing mode. * * - Possibly the selected shape's connection points should always * be shown (i.e., have knots) when in editing mode. * * - It is a little strange to be able to place connection points * competely outside shapes. Especially when you later can't draw * connectors to them since the knots are only visible when you * are over the shape. I think that you should only be able to * place connection points inside or on the boundary of the shape * itself. * * - The intended ability to place a new point at the current cursor * position by pressing RETURN does not seem to work. * * - The Status bar tooltip should change to reflect editing mode * and tell the user about RETURN and how to use the tool. * * - Connection points general: * * - Connection points that were inside the shape can end up outside * after a rotation is applied to the shape in the select tool. * It doesn't seem like the correct transform is being applied to * these, or it is being applied at the wrong time. I'd expect * connection points to rotate with the shape, and stay at the * same position "on the shape" * * - I was able to make the connectors attached to a shape fall off * the shape after scaling it. Not sure the exact cause, but may * require more investigation/debugging. * * - The user-defined connection points should be either absolute * (as the current ones are) or defined as a percentage of the * shape. These would be based on a toggle setting on the * toolbar, and they would be placed in exactly the same way by * the user. The only difference would be that they would be * store as percentage positions in the SVG connection-points * property and that they would update/move automatically if the * object was resized or scaled. * * - Thinking more, I think you always want to store and think about * the positions of connection points to be pre-transform, but * obviously the shape transform is applied to them. That way, * they will rotate and scale automatically with the shape, when * the shape transform is altered. The Percentage version would * compute their position from the pre-transform dimensions and * then have the transform applied to them, for example. * * - The connection points in the test_connection_points.svg file * seem to follow the shape when it is moved, but connection * points I add to new shapes, do not follow the shape, either * when the shape is just moved or transformed. There is * something wrong here. What exactly should the behaviour be * currently? * * - I see that connection points are specified at absolute canvas * positions. I really think that they should be specified in * shape coordinated relative to the shapes. There may be * transforms applied to layers and the canvas which would make * specifying them quite difficult. I'd expect a position of 0, 0 * to be on the shape in question or very close to it, for example. * */ #include #include #include #include "connector-context.h" #include "pixmaps/cursor-connector.xpm" #include "pixmaps/cursor-node.xpm" //#include "pixmaps/cursor-node-m.xpm" //#include "pixmaps/cursor-node-d.xpm" #include "xml/node-event-vector.h" #include "xml/repr.h" #include "svg/svg.h" #include "desktop.h" #include "desktop-style.h" #include "desktop-handles.h" #include "document.h" #include "message-context.h" #include "message-stack.h" #include "selection.h" #include "inkscape.h" #include "preferences.h" #include "sp-path.h" #include "display/canvas-bpath.h" #include "display/sodipodi-ctrl.h" #include #include #include "snap.h" #include "knot.h" #include "sp-conn-end.h" #include "sp-conn-end-pair.h" #include "conn-avoid-ref.h" #include "libavoid/vertices.h" #include "libavoid/router.h" #include "context-fns.h" #include "sp-namedview.h" #include "sp-text.h" #include "sp-flowtext.h" #include "display/curve.h" static void sp_connector_context_class_init(SPConnectorContextClass *klass); static void sp_connector_context_init(SPConnectorContext *conn_context); static void sp_connector_context_dispose(GObject *object); static void sp_connector_context_setup(SPEventContext *ec); static void sp_connector_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val); static void sp_connector_context_finish(SPEventContext *ec); static gint sp_connector_context_root_handler(SPEventContext *ec, GdkEvent *event); static gint sp_connector_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event); // Stuff borrowed from DrawContext static void spcc_connector_set_initial_point(SPConnectorContext *cc, Geom::Point const p); static void spcc_connector_set_subsequent_point(SPConnectorContext *cc, Geom::Point const p); static void spcc_connector_finish_segment(SPConnectorContext *cc, Geom::Point p); static void spcc_reset_colors(SPConnectorContext *cc); static void spcc_connector_finish(SPConnectorContext *cc); static void spcc_concat_colors_and_flush(SPConnectorContext *cc); static void spcc_flush_white(SPConnectorContext *cc, SPCurve *gc); // Context event handlers static gint connector_handle_button_press(SPConnectorContext *const cc, GdkEventButton const &bevent); static gint connector_handle_motion_notify(SPConnectorContext *const cc, GdkEventMotion const &mevent); static gint connector_handle_button_release(SPConnectorContext *const cc, GdkEventButton const &revent); static gint connector_handle_key_press(SPConnectorContext *const cc, guint const keyval); static void cc_active_shape_add_knot(SPDesktop* desktop, SPItem* item, ConnectionPointMap &cphandles, ConnectionPoint& cp); static void cc_set_active_shape(SPConnectorContext *cc, SPItem *item); static void cc_clear_active_shape(SPConnectorContext *cc); static void cc_set_active_conn(SPConnectorContext *cc, SPItem *item); static void cc_clear_active_conn(SPConnectorContext *cc); static bool conn_pt_handle_test(SPConnectorContext *cc, Geom::Point& p, gchar **href, gchar **cpid); static void cc_select_handle(SPKnot* knot); static void cc_deselect_handle(SPKnot* knot); static bool cc_item_is_shape(SPItem *item); static void cc_selection_changed(Inkscape::Selection *selection, gpointer data); static void cc_connector_rerouting_finish(SPConnectorContext *const cc, Geom::Point *const p); static void shape_event_attr_deleted(Inkscape::XML::Node *repr, Inkscape::XML::Node *child, Inkscape::XML::Node *ref, gpointer data); static void shape_event_attr_changed(Inkscape::XML::Node *repr, gchar const *name, gchar const *old_value, gchar const *new_value, bool is_interactive, gpointer data); /*static Geom::Point connector_drag_origin_w(0, 0); static bool connector_within_tolerance = false;*/ static SPEventContextClass *parent_class; static Inkscape::XML::NodeEventVector shape_repr_events = { NULL, /* child_added */ NULL, /* child_added */ shape_event_attr_changed, NULL, /* content_changed */ NULL /* order_changed */ }; static Inkscape::XML::NodeEventVector layer_repr_events = { NULL, /* child_added */ shape_event_attr_deleted, NULL, /* child_added */ NULL, /* content_changed */ NULL /* order_changed */ }; GType sp_connector_context_get_type(void) { static GType type = 0; if (!type) { GTypeInfo info = { sizeof(SPConnectorContextClass), NULL, NULL, (GClassInitFunc) sp_connector_context_class_init, NULL, NULL, sizeof(SPConnectorContext), 4, (GInstanceInitFunc) sp_connector_context_init, NULL, /* value_table */ }; type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPConnectorContext", &info, (GTypeFlags)0); } return type; } static void sp_connector_context_class_init(SPConnectorContextClass *klass) { GObjectClass *object_class; SPEventContextClass *event_context_class; object_class = (GObjectClass *) klass; event_context_class = (SPEventContextClass *) klass; parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass); object_class->dispose = sp_connector_context_dispose; event_context_class->setup = sp_connector_context_setup; event_context_class->set = sp_connector_context_set; event_context_class->finish = sp_connector_context_finish; event_context_class->root_handler = sp_connector_context_root_handler; event_context_class->item_handler = sp_connector_context_item_handler; } static void sp_connector_context_init(SPConnectorContext *cc) { SPEventContext *ec = SP_EVENT_CONTEXT(cc); ec->cursor_shape = cursor_connector_xpm; ec->hot_x = 1; ec->hot_y = 1; ec->xp = 0; ec->yp = 0; cc->mode = SP_CONNECTOR_CONTEXT_DRAWING_MODE; cc->knot_tip = 0; cc->red_color = 0xff00007f; cc->newconn = NULL; cc->newConnRef = NULL; cc->curvature = 0.0; cc->sel_changed_connection = sigc::connection(); cc->active_shape = NULL; cc->active_shape_repr = NULL; cc->active_shape_layer_repr = NULL; cc->active_conn = NULL; cc->active_conn_repr = NULL; cc->active_handle = NULL; cc->selected_handle = NULL; cc->clickeditem = NULL; cc->clickedhandle = NULL; new (&cc->connpthandles) ConnectionPointMap(); for (int i = 0; i < 2; ++i) { cc->endpt_handle[i] = NULL; cc->endpt_handler_id[i] = 0; } cc->shref = NULL; cc->scpid = NULL; cc->ehref = NULL; cc->ecpid = NULL; cc->npoints = 0; cc->state = SP_CONNECTOR_CONTEXT_IDLE; } static void sp_connector_context_dispose(GObject *object) { SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(object); cc->sel_changed_connection.disconnect(); if (!cc->connpthandles.empty()) { for (ConnectionPointMap::iterator it = cc->connpthandles.begin(); it != cc->connpthandles.end(); ++it) { g_object_unref(it->first); } cc->connpthandles.clear(); } cc->connpthandles.~ConnectionPointMap(); for (int i = 0; i < 2; ++i) { if (cc->endpt_handle[1]) { g_object_unref(cc->endpt_handle[i]); cc->endpt_handle[i] = NULL; } } if (cc->shref) { g_free(cc->shref); cc->shref = NULL; } if (cc->scpid) { g_free(cc->scpid); cc->scpid = NULL; } if (cc->ehref) { g_free(cc->shref); cc->shref = NULL; } if (cc->ecpid) { g_free(cc->scpid); cc->scpid = NULL; } g_assert( cc->newConnRef == NULL ); G_OBJECT_CLASS(parent_class)->dispose(object); } static void sp_connector_context_setup(SPEventContext *ec) { SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec); SPDesktop *dt = ec->desktop; if (((SPEventContextClass *) parent_class)->setup) { ((SPEventContextClass *) parent_class)->setup(ec); } cc->selection = sp_desktop_selection(dt); cc->sel_changed_connection.disconnect(); cc->sel_changed_connection = cc->selection->connectChanged( sigc::bind(sigc::ptr_fun(&cc_selection_changed), (gpointer) cc)); /* Create red bpath */ cc->red_bpath = sp_canvas_bpath_new(sp_desktop_sketch(ec->desktop), NULL); sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(cc->red_bpath), cc->red_color, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT); sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(cc->red_bpath), 0x00000000, SP_WIND_RULE_NONZERO); /* Create red curve */ cc->red_curve = new SPCurve(); /* Create green curve */ cc->green_curve = new SPCurve(); // Notice the initial selection. cc_selection_changed(cc->selection, (gpointer) cc); cc->within_tolerance = false; sp_event_context_read(ec, "curvature"); sp_event_context_read(ec, "orthogonal"); sp_event_context_read(ec, "mode"); cc->knot_tip = cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE ? cc_knot_tips[0] : cc_knot_tips[1]; Inkscape::Preferences *prefs = Inkscape::Preferences::get(); if (prefs->getBool("/tools/connector/selcue", 0)) { ec->enableSelectionCue(); } // Make sure we see all enter events for canvas items, // even if a mouse button is depressed. dt->canvas->gen_all_enter_events = true; } static void sp_connector_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val) { SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec); /* fixme: Proper error handling for non-numeric data. Use a locale-independent function like * g_ascii_strtod (or a thin wrapper that does the right thing for invalid values inf/nan). */ Glib::ustring name = val->getEntryName(); if ( name == "curvature" ) { cc->curvature = val->getDoubleLimited(); // prevents NaN and +/-Inf from messing up } else if ( name == "orthogonal" ) { cc->isOrthogonal = val->getBool(); } else if ( name == "mode") { sp_connector_context_switch_mode(ec, val->getBool() ? SP_CONNECTOR_CONTEXT_EDITING_MODE : SP_CONNECTOR_CONTEXT_DRAWING_MODE); } } void sp_connector_context_switch_mode(SPEventContext* ec, unsigned int newMode) { SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec); cc->mode = newMode; if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE ) { ec->cursor_shape = cursor_connector_xpm; cc->knot_tip = cc_knot_tips[0]; if (cc->selected_handle) cc_deselect_handle( cc->selected_handle ); cc->selected_handle = NULL; // Show all default connection points } else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE ) { ec->cursor_shape = cursor_node_xpm; cc->knot_tip = cc_knot_tips[1]; /* if (cc->active_shape) { cc->selection->set( SP_OBJECT( cc->active_shape ) ); } else { SPItem* item = cc->selection->singleItem(); if ( item ) { cc_set_active_shape(cc, item); cc->selection->set( SP_OBJECT( item ) ); } }*/ } sp_event_context_update_cursor(ec); } static void sp_connector_context_finish(SPEventContext *ec) { SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec); spcc_connector_finish(cc); cc->state = SP_CONNECTOR_CONTEXT_IDLE; if (((SPEventContextClass *) parent_class)->finish) { ((SPEventContextClass *) parent_class)->finish(ec); } if (cc->selection) { cc->selection = NULL; } cc_clear_active_shape(cc); cc_clear_active_conn(cc); // Restore the default event generating behaviour. SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(ec); desktop->canvas->gen_all_enter_events = false; } //----------------------------------------------------------------------------- static void cc_clear_active_shape(SPConnectorContext *cc) { if (cc->active_shape == NULL) { return; } g_assert( cc->active_shape_repr ); g_assert( cc->active_shape_layer_repr ); cc->active_shape = NULL; if (cc->active_shape_repr) { sp_repr_remove_listener_by_data(cc->active_shape_repr, cc); Inkscape::GC::release(cc->active_shape_repr); cc->active_shape_repr = NULL; sp_repr_remove_listener_by_data(cc->active_shape_layer_repr, cc); Inkscape::GC::release(cc->active_shape_layer_repr); cc->active_shape_layer_repr = NULL; } // Hide the connection points if they exist. if (cc->connpthandles.size()) { for (ConnectionPointMap::iterator it = cc->connpthandles.begin(); it != cc->connpthandles.end(); ++it) { sp_knot_hide(it->first); } } } static void cc_clear_active_conn(SPConnectorContext *cc) { if (cc->active_conn == NULL) { return; } g_assert( cc->active_conn_repr ); cc->active_conn = NULL; if (cc->active_conn_repr) { sp_repr_remove_listener_by_data(cc->active_conn_repr, cc); Inkscape::GC::release(cc->active_conn_repr); cc->active_conn_repr = NULL; } // Hide the endpoint handles. for (int i = 0; i < 2; ++i) { if (cc->endpt_handle[i]) { sp_knot_hide(cc->endpt_handle[i]); } } } static bool conn_pt_handle_test(SPConnectorContext *cc, Geom::Point& p, gchar **href, gchar **cpid) { // TODO: this will need to change when there are more connection // points available for each shape. if (cc->active_handle && (cc->connpthandles.find(cc->active_handle) != cc->connpthandles.end())) { p = cc->active_handle->pos; const ConnectionPoint& cp = cc->connpthandles[cc->active_handle]; *href = g_strdup_printf("#%s", cc->active_shape->getId()); *cpid = g_strdup_printf("%c%d", cp.type == ConnPointDefault ? 'd' : 'u' , cp.id); return true; } *href = NULL; *cpid = NULL; return false; } static void cc_select_handle(SPKnot* knot) { knot->setShape(SP_KNOT_SHAPE_SQUARE); knot->setSize(10); knot->setAnchor(GTK_ANCHOR_CENTER); knot->setFill(0x0000ffff, 0x0000ffff, 0x0000ffff); sp_knot_update_ctrl(knot); } static void cc_deselect_handle(SPKnot* knot) { knot->setShape(SP_KNOT_SHAPE_SQUARE); knot->setSize(8); knot->setAnchor(GTK_ANCHOR_CENTER); knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff); sp_knot_update_ctrl(knot); } static gint sp_connector_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event) { gint ret = FALSE; SPDesktop *desktop = event_context->desktop; SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(event_context); Geom::Point p(event->button.x, event->button.y); switch (event->type) { case GDK_BUTTON_RELEASE: if (event->button.button == 1 && !event_context->space_panning) { if ((cc->state == SP_CONNECTOR_CONTEXT_DRAGGING) && (event_context->within_tolerance)) { spcc_reset_colors(cc); cc->state = SP_CONNECTOR_CONTEXT_IDLE; } if (cc->state != SP_CONNECTOR_CONTEXT_IDLE) { // Doing something else like rerouting. break; } // find out clicked item, honoring Alt SPItem *item = sp_event_context_find_item(desktop, p, event->button.state & GDK_MOD1_MASK, FALSE); if (event->button.state & GDK_SHIFT_MASK) { cc->selection->toggle(item); } else { cc->selection->set(item); if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE && cc->selected_handle ) { cc_deselect_handle( cc->selected_handle ); cc->selected_handle = NULL; } /* When selecting a new item, do not allow showing connection points on connectors. (yet?) */ if ( item != cc->active_shape && !cc_item_is_connector( item ) ) cc_set_active_shape( cc, item ); } ret = TRUE; } break; case GDK_ENTER_NOTIFY: { if (cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE || (cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE && !cc->selected_handle)) { if (cc_item_is_shape(item)) { // I don't really understand what the above does, // so I commented it. // This is a shape, so show connection point(s). /* if (!(cc->active_shape) // Don't show handle for another handle. // || (cc->connpthandles.find((SPKnot*) item) != cc->connpthandles.end()) ) { cc_set_active_shape(cc, item); }*/ cc_set_active_shape(cc, item); } ret = TRUE; } break; } default: break; } return ret; } gint sp_connector_context_root_handler(SPEventContext *ec, GdkEvent *event) { SPConnectorContext *const cc = SP_CONNECTOR_CONTEXT(ec); gint ret = FALSE; switch (event->type) { case GDK_BUTTON_PRESS: ret = connector_handle_button_press(cc, event->button); break; case GDK_MOTION_NOTIFY: ret = connector_handle_motion_notify(cc, event->motion); break; case GDK_BUTTON_RELEASE: ret = connector_handle_button_release(cc, event->button); break; case GDK_KEY_PRESS: ret = connector_handle_key_press(cc, get_group0_keyval (&event->key)); break; default: break; } if (!ret) { gint (*const parent_root_handler)(SPEventContext *, GdkEvent *) = ((SPEventContextClass *) parent_class)->root_handler; if (parent_root_handler) { ret = parent_root_handler(ec, event); } } return ret; } static gint connector_handle_button_press(SPConnectorContext *const cc, GdkEventButton const &bevent) { Geom::Point const event_w(bevent.x, bevent.y); /* Find desktop coordinates */ Geom::Point p = cc->desktop->w2d(event_w); SPEventContext *event_context = SP_EVENT_CONTEXT(cc); gint ret = FALSE; if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE ) { if ( bevent.button == 1 && !event_context->space_panning ) { SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc); if (Inkscape::have_viable_layer(desktop, cc->_message_context) == false) { return TRUE; } Geom::Point const event_w(bevent.x, bevent.y); // connector_drag_origin_w = event_w; cc->xp = bevent.x; cc->yp = bevent.y; cc->within_tolerance = true; Geom::Point const event_dt = cc->desktop->w2d(event_w); SnapManager &m = cc->desktop->namedview->snap_manager; m.setup(cc->desktop); switch (cc->state) { case SP_CONNECTOR_CONTEXT_STOP: /* This is allowed, if we just canceled curve */ case SP_CONNECTOR_CONTEXT_IDLE: { if ( cc->npoints == 0 ) { cc_clear_active_conn(cc); SP_EVENT_CONTEXT_DESKTOP(cc)->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating new connector")); /* Set start anchor */ /* Create green anchor */ Geom::Point p = event_dt; // Test whether we clicked on a connection point bool found = conn_pt_handle_test(cc, p, &cc->shref, &cc->scpid); if (!found) { // This is the first point, so just snap it to the grid // as there's no other points to go off. m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE); } spcc_connector_set_initial_point(cc, p); } cc->state = SP_CONNECTOR_CONTEXT_DRAGGING; ret = TRUE; break; } case SP_CONNECTOR_CONTEXT_DRAGGING: { // This is the second click of a connector creation. m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE); spcc_connector_set_subsequent_point(cc, p); spcc_connector_finish_segment(cc, p); // Test whether we clicked on a connection point /*bool found = */conn_pt_handle_test(cc, p, &cc->ehref, &cc->ecpid); if (cc->npoints != 0) { spcc_connector_finish(cc); } cc_set_active_conn(cc, cc->newconn); cc->state = SP_CONNECTOR_CONTEXT_IDLE; ret = TRUE; break; } case SP_CONNECTOR_CONTEXT_CLOSE: { g_warning("Button down in CLOSE state"); break; } default: break; } } else if (bevent.button == 3) { if (cc->state == SP_CONNECTOR_CONTEXT_REROUTING) { // A context menu is going to be triggered here, // so end the rerouting operation. cc_connector_rerouting_finish(cc, &p); cc->state = SP_CONNECTOR_CONTEXT_IDLE; // Don't set ret to TRUE, so we drop through to the // parent handler which will open the context menu. } else if (cc->npoints != 0) { spcc_connector_finish(cc); cc->state = SP_CONNECTOR_CONTEXT_IDLE; ret = TRUE; } } } else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE ) { if ( bevent.button == 1 && !event_context->space_panning ) { // Initialize variables in case of dragging SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc); if (Inkscape::have_viable_layer(desktop, cc->_message_context) == false) { return TRUE; } cc->xp = bevent.x; cc->yp = bevent.y; cc->within_tolerance = true; ConnectionPointMap::iterator const& active_knot_it = cc->connpthandles.find( cc->active_handle ); switch (cc->state) { case SP_CONNECTOR_CONTEXT_IDLE: if ( active_knot_it != cc->connpthandles.end() ) { // We do not allow selecting and, thereby, moving default knots if ( active_knot_it->second.type != ConnPointDefault) { if (cc->selected_handle != cc->active_handle) { if ( cc->selected_handle ) cc_deselect_handle( cc->selected_handle ); cc->selected_handle = cc->active_handle; cc_select_handle( cc->selected_handle ); } } else // Just ignore the default connection point return FALSE; } else if ( cc->selected_handle ) { cc_deselect_handle( cc->selected_handle ); cc->selected_handle = NULL; } if ( cc->selected_handle ) { cc->state = SP_CONNECTOR_CONTEXT_DRAGGING; cc->selection->set( SP_OBJECT( cc->active_shape ) ); } ret = TRUE; break; // Dragging valid because of the way we create // new connection points. case SP_CONNECTOR_CONTEXT_DRAGGING: // Do nothing. ret = TRUE; break; } } } return ret; } static gint connector_handle_motion_notify(SPConnectorContext *const cc, GdkEventMotion const &mevent) { gint ret = FALSE; SPEventContext *event_context = SP_EVENT_CONTEXT(cc); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); if (event_context->space_panning || mevent.state & GDK_BUTTON2_MASK || mevent.state & GDK_BUTTON3_MASK) { // allow middle-button scrolling return FALSE; } Geom::Point const event_w(mevent.x, mevent.y); if (cc->within_tolerance) { cc->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100); if ( ( abs( (gint) mevent.x - cc->xp ) < cc->tolerance ) && ( abs( (gint) mevent.y - cc->yp ) < cc->tolerance ) ) { return FALSE; // Do not drag if we're within tolerance from origin. } } // Once the user has moved farther than tolerance from the original location // (indicating they intend to move the object, not click), then always process // the motion notify coordinates as given (no snapping back to origin) cc->within_tolerance = false; SPDesktop *const dt = cc->desktop; /* Find desktop coordinates */ Geom::Point p = dt->w2d(event_w); if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE ) { SnapManager &m = dt->namedview->snap_manager; m.setup(dt); switch (cc->state) { case SP_CONNECTOR_CONTEXT_DRAGGING: { gobble_motion_events(mevent.state); // This is movement during a connector creation. if ( cc->npoints > 0 ) { m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE); cc->selection->clear(); spcc_connector_set_subsequent_point(cc, p); ret = TRUE; } break; } case SP_CONNECTOR_CONTEXT_REROUTING: { gobble_motion_events(GDK_BUTTON1_MASK); g_assert( SP_IS_PATH(cc->clickeditem)); m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE); // Update the hidden path Geom::Matrix i2d = sp_item_i2d_affine(cc->clickeditem); Geom::Matrix d2i = i2d.inverse(); SPPath *path = SP_PATH(cc->clickeditem); SPCurve *curve = path->original_curve ? path->original_curve : path->curve; if (cc->clickedhandle == cc->endpt_handle[0]) { Geom::Point o = cc->endpt_handle[1]->pos; curve->stretch_endpoints(p * d2i, o * d2i); } else { Geom::Point o = cc->endpt_handle[0]->pos; curve->stretch_endpoints(o * d2i, p * d2i); } sp_conn_reroute_path_immediate(path); // Copy this to the temporary visible path cc->red_curve = path->original_curve ? path->original_curve->copy() : path->curve->copy(); cc->red_curve->transform(i2d); sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), cc->red_curve); ret = TRUE; break; } case SP_CONNECTOR_CONTEXT_STOP: /* This is perfectly valid */ break; default: if (!sp_event_context_knot_mouseover(cc)) { m.preSnap(Inkscape::SnapCandidatePoint(p, Inkscape::SNAPSOURCE_OTHER_HANDLE)); } break; } } else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE ) { switch ( cc->state ) { case SP_CONNECTOR_CONTEXT_DRAGGING: sp_knot_set_position(cc->selected_handle, p, 0); ret = TRUE; break; case SP_CONNECTOR_CONTEXT_NEWCONNPOINT: sp_knot_set_position(cc->selected_handle, p, 0); ret = TRUE; break; } } return ret; } static gint connector_handle_button_release(SPConnectorContext *const cc, GdkEventButton const &revent) { gint ret = FALSE; SPEventContext *event_context = SP_EVENT_CONTEXT(cc); if ( revent.button == 1 && !event_context->space_panning ) { SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc); SPDocument *doc = sp_desktop_document(desktop); SnapManager &m = desktop->namedview->snap_manager; m.setup(desktop); Geom::Point const event_w(revent.x, revent.y); /* Find desktop coordinates */ Geom::Point p = cc->desktop->w2d(event_w); if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE ) { switch (cc->state) { //case SP_CONNECTOR_CONTEXT_POINT: case SP_CONNECTOR_CONTEXT_DRAGGING: { m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE); if (cc->within_tolerance) { spcc_connector_finish_segment(cc, p); return TRUE; } // Connector has been created via a drag, end it now. spcc_connector_set_subsequent_point(cc, p); spcc_connector_finish_segment(cc, p); // Test whether we clicked on a connection point /*bool found = */conn_pt_handle_test(cc, p, &cc->ehref, &cc->ecpid); if (cc->npoints != 0) { spcc_connector_finish(cc); } cc_set_active_conn(cc, cc->newconn); cc->state = SP_CONNECTOR_CONTEXT_IDLE; break; } case SP_CONNECTOR_CONTEXT_REROUTING: { m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE); cc_connector_rerouting_finish(cc, &p); sp_document_ensure_up_to_date(doc); cc->state = SP_CONNECTOR_CONTEXT_IDLE; return TRUE; break; } case SP_CONNECTOR_CONTEXT_STOP: /* This is allowed, if we just cancelled curve */ break; default: break; } ret = TRUE; } else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE ) { switch ( cc->state ) { case SP_CONNECTOR_CONTEXT_DRAGGING: if (!cc->within_tolerance) { m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE); sp_knot_set_position(cc->selected_handle, p, 0); ConnectionPoint& cp = cc->connpthandles[cc->selected_handle]; cp.pos = p * sp_item_dt2i_affine(cc->active_shape); cc->active_shape->avoidRef->updateConnectionPoint(cp); } cc->state = SP_CONNECTOR_CONTEXT_IDLE; ret = TRUE; break; case SP_CONNECTOR_CONTEXT_NEWCONNPOINT: m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE); sp_knot_set_position(cc->selected_handle, p, 0); ConnectionPoint cp; cp.type = ConnPointUserDefined; cp.pos = p * sp_item_dt2i_affine(cc->active_shape); cp.dir = Avoid::ConnDirAll; g_object_unref(cc->selected_handle); cc->active_shape->avoidRef->addConnectionPoint(cp); sp_document_ensure_up_to_date(doc); for (ConnectionPointMap::iterator it = cc->connpthandles.begin(); it != cc->connpthandles.end(); ++it) if (it->second.type == ConnPointUserDefined && it->second.id == cp.id) { cc->selected_handle = it->first; break; } cc_select_handle( cc->selected_handle ); cc->state = SP_CONNECTOR_CONTEXT_IDLE; ret = TRUE; break; } } } return ret; } static gint connector_handle_key_press(SPConnectorContext *const cc, guint const keyval) { gint ret = FALSE; /* fixme: */ if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE ) { switch (keyval) { case GDK_Return: case GDK_KP_Enter: if (cc->npoints != 0) { spcc_connector_finish(cc); cc->state = SP_CONNECTOR_CONTEXT_IDLE; ret = TRUE; } break; case GDK_Escape: if (cc->state == SP_CONNECTOR_CONTEXT_REROUTING) { SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc); SPDocument *doc = sp_desktop_document(desktop); cc_connector_rerouting_finish(cc, NULL); sp_document_undo(doc); cc->state = SP_CONNECTOR_CONTEXT_IDLE; desktop->messageStack()->flash( Inkscape::NORMAL_MESSAGE, _("Connector endpoint drag cancelled.")); ret = TRUE; } else if (cc->npoints != 0) { // if drawing, cancel, otherwise pass it up for deselecting cc->state = SP_CONNECTOR_CONTEXT_STOP; spcc_reset_colors(cc); ret = TRUE; } break; default: break; } } else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE ) { switch ( cc->state ) { case SP_CONNECTOR_CONTEXT_DRAGGING: if ( keyval == GDK_Escape ) { // Cancel connection point dragging // Obtain original position ConnectionPoint const& cp = cc->connpthandles[cc->selected_handle]; SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc); const Geom::Matrix& i2doc = sp_item_i2doc_affine(cc->active_shape); sp_knot_set_position(cc->selected_handle, cp.pos * i2doc * desktop->doc2dt(), 0); cc->state = SP_CONNECTOR_CONTEXT_IDLE; desktop->messageStack()->flash( Inkscape::NORMAL_MESSAGE, _("Connection point drag cancelled.")); ret = TRUE; } else if ( keyval == GDK_Return || keyval == GDK_KP_Enter ) { // Put connection point at current position SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc); SnapManager &m = desktop->namedview->snap_manager; m.setup(desktop); Geom::Point p = cc->selected_handle->pos; // SPEventContext* event_context = SP_EVENT_CONTEXT( cc ); if (!cc->within_tolerance) { m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE); sp_knot_set_position(cc->selected_handle, p, 0); ConnectionPoint& cp = cc->connpthandles[cc->selected_handle]; cp.pos = p * sp_item_dt2i_affine(cc->active_shape); cc->active_shape->avoidRef->updateConnectionPoint(cp); } cc->state = SP_CONNECTOR_CONTEXT_IDLE; ret = TRUE; } break; case SP_CONNECTOR_CONTEXT_NEWCONNPOINT: if ( keyval == GDK_Escape ) { // Just destroy the knot g_object_unref( cc->selected_handle ); cc->selected_handle = NULL; cc->state = SP_CONNECTOR_CONTEXT_IDLE; ret = TRUE; } else if ( keyval == GDK_Return || keyval == GDK_KP_Enter ) { SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc); SPDocument *doc = sp_desktop_document(desktop); SnapManager &m = desktop->namedview->snap_manager; m.setup(desktop); Geom::Point p = cc->selected_handle->pos; m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE); sp_knot_set_position(cc->selected_handle, p, 0); ConnectionPoint cp; cp.type = ConnPointUserDefined; cp.pos = p * sp_item_dt2i_affine(cc->active_shape); cp.dir = Avoid::ConnDirAll; g_object_unref(cc->selected_handle); cc->active_shape->avoidRef->addConnectionPoint(cp); sp_document_ensure_up_to_date(doc); for (ConnectionPointMap::iterator it = cc->connpthandles.begin(); it != cc->connpthandles.end(); ++it) if (it->second.type == ConnPointUserDefined && it->second.id == cp.id) { cc->selected_handle = it->first; break; } cc_select_handle( cc->selected_handle ); cc->state = SP_CONNECTOR_CONTEXT_IDLE; ret = TRUE; } break; case SP_CONNECTOR_CONTEXT_IDLE: if ( keyval == GDK_Delete && cc->selected_handle ) { cc->active_shape->avoidRef->deleteConnectionPoint(cc->connpthandles[cc->selected_handle]); cc->selected_handle = NULL; ret = TRUE; } break; } } return ret; } static void cc_connector_rerouting_finish(SPConnectorContext *const cc, Geom::Point *const p) { SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc); SPDocument *doc = sp_desktop_document(desktop); // Clear the temporary path: cc->red_curve->reset(); sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL); if (p != NULL) { // Test whether we clicked on a connection point gchar *shape_label, *cpid; bool found = conn_pt_handle_test(cc, *p, &shape_label, &cpid); if (found) { if (cc->clickedhandle == cc->endpt_handle[0]) { sp_object_setAttribute(cc->clickeditem, "inkscape:connection-start", shape_label, false); sp_object_setAttribute(cc->clickeditem, "inkscape:connection-start-point", cpid, false); } else { sp_object_setAttribute(cc->clickeditem, "inkscape:connection-end", shape_label, false); sp_object_setAttribute(cc->clickeditem, "inkscape:connection-end-point", cpid, false); } g_free(shape_label); } } cc->clickeditem->setHidden(false); sp_conn_reroute_path_immediate(SP_PATH(cc->clickeditem)); cc->clickeditem->updateRepr(); sp_document_done(doc, SP_VERB_CONTEXT_CONNECTOR, _("Reroute connector")); cc_set_active_conn(cc, cc->clickeditem); } static void spcc_reset_colors(SPConnectorContext *cc) { /* Red */ cc->red_curve->reset(); sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL); cc->green_curve->reset(); cc->npoints = 0; } static void spcc_connector_set_initial_point(SPConnectorContext *const cc, Geom::Point const p) { g_assert( cc->npoints == 0 ); cc->p[0] = p; cc->p[1] = p; cc->npoints = 2; sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL); } static void spcc_connector_set_subsequent_point(SPConnectorContext *const cc, Geom::Point const p) { g_assert( cc->npoints != 0 ); SPDesktop *dt = cc->desktop; Geom::Point o = dt->dt2doc(cc->p[0]); Geom::Point d = dt->dt2doc(p); Avoid::Point src(o[Geom::X], o[Geom::Y]); Avoid::Point dst(d[Geom::X], d[Geom::Y]); if (!cc->newConnRef) { Avoid::Router *router = sp_desktop_document(dt)->router; cc->newConnRef = new Avoid::ConnRef(router); cc->newConnRef->setEndpoint(Avoid::VertID::src, src); if (cc->isOrthogonal) cc->newConnRef->setRoutingType(Avoid::ConnType_Orthogonal); else cc->newConnRef->setRoutingType(Avoid::ConnType_PolyLine); } // Set new endpoint. cc->newConnRef->setEndpoint(Avoid::VertID::tar, dst); // Immediately generate new routes for connector. cc->newConnRef->makePathInvalid(); cc->newConnRef->router()->processTransaction(); // Recreate curve from libavoid route. recreateCurve( cc->red_curve, cc->newConnRef, cc->curvature ); cc->red_curve->transform(dt->doc2dt()); sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), cc->red_curve); } /** * Concats red, blue and green. * If any anchors are defined, process these, optionally removing curves from white list * Invoke _flush_white to write result back to object. */ static void spcc_concat_colors_and_flush(SPConnectorContext *cc) { SPCurve *c = cc->green_curve; cc->green_curve = new SPCurve(); cc->red_curve->reset(); sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL); if (c->is_empty()) { c->unref(); return; } spcc_flush_white(cc, c); c->unref(); } /* * Flushes white curve(s) and additional curve into object * * No cleaning of colored curves - this has to be done by caller * No rereading of white data, so if you cannot rely on ::modified, do it in caller * */ static void spcc_flush_white(SPConnectorContext *cc, SPCurve *gc) { SPCurve *c; if (gc) { c = gc; c->ref(); } else { return; } /* Now we have to go back to item coordinates at last */ c->transform(SP_EVENT_CONTEXT_DESKTOP(cc)->dt2doc()); SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc); SPDocument *doc = sp_desktop_document(desktop); Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc); if ( c && !c->is_empty() ) { /* We actually have something to write */ Inkscape::XML::Node *repr = xml_doc->createElement("svg:path"); /* Set style */ sp_desktop_apply_style_tool(desktop, repr, "/tools/connector", false); gchar *str = sp_svg_write_path( c->get_pathvector() ); g_assert( str != NULL ); repr->setAttribute("d", str); g_free(str); /* Attach repr */ cc->newconn = SP_ITEM(desktop->currentLayer()->appendChildRepr(repr)); cc->newconn->transform = sp_item_i2doc_affine(SP_ITEM(desktop->currentLayer())).inverse(); bool connection = false; sp_object_setAttribute(cc->newconn, "inkscape:connector-type", cc->isOrthogonal ? "orthogonal" : "polyline", false); sp_object_setAttribute(cc->newconn, "inkscape:connector-curvature", Glib::Ascii::dtostr(cc->curvature).c_str(), false); if (cc->shref) { sp_object_setAttribute(cc->newconn, "inkscape:connection-start", cc->shref, false); if (cc->scpid) sp_object_setAttribute(cc->newconn, "inkscape:connection-start-point", cc->scpid, false); connection = true; } if (cc->ehref) { sp_object_setAttribute(cc->newconn, "inkscape:connection-end", cc->ehref, false); if (cc->ecpid) sp_object_setAttribute(cc->newconn, "inkscape:connection-end-point", cc->ecpid, false); connection = true; } // Process pending updates. cc->newconn->updateRepr(); sp_document_ensure_up_to_date(doc); if (connection) { // Adjust endpoints to shape edge. sp_conn_reroute_path_immediate(SP_PATH(cc->newconn)); cc->newconn->updateRepr(); } // Only set the selection after we are finished with creating the attributes of // the connector. Otherwise, the selection change may alter the defaults for // values like curvature in the connector context, preventing subsequent lookup // of their original values. cc->selection->set(repr); Inkscape::GC::release(repr); } c->unref(); sp_document_done(doc, SP_VERB_CONTEXT_CONNECTOR, _("Create connector")); } static void spcc_connector_finish_segment(SPConnectorContext *const cc, Geom::Point const /*p*/) { if (!cc->red_curve->is_empty()) { cc->green_curve->append_continuous(cc->red_curve, 0.0625); cc->p[0] = cc->p[3]; cc->p[1] = cc->p[4]; cc->npoints = 2; cc->red_curve->reset(); } } static void spcc_connector_finish(SPConnectorContext *const cc) { SPDesktop *const desktop = cc->desktop; desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Finishing connector")); cc->red_curve->reset(); spcc_concat_colors_and_flush(cc); cc->npoints = 0; if (cc->newConnRef) { cc->newConnRef->removeFromGraph(); delete cc->newConnRef; cc->newConnRef = NULL; } } static gboolean cc_generic_knot_handler(SPCanvasItem *, GdkEvent *event, SPKnot *knot) { g_assert (knot != NULL); g_object_ref(knot); SPConnectorContext *cc = SP_CONNECTOR_CONTEXT( knot->desktop->event_context); gboolean consumed = FALSE; gchar* knot_tip = knot->tip ? knot->tip : cc->knot_tip; switch (event->type) { case GDK_ENTER_NOTIFY: sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, TRUE); cc->active_handle = knot; if (knot_tip) { knot->desktop->event_context->defaultMessageContext()->set( Inkscape::NORMAL_MESSAGE, knot_tip); } consumed = TRUE; break; case GDK_LEAVE_NOTIFY: sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, FALSE); cc->active_handle = NULL; if (knot_tip) { knot->desktop->event_context->defaultMessageContext()->clear(); } consumed = TRUE; break; default: break; } g_object_unref(knot); return consumed; } static gboolean endpt_handler(SPKnot */*knot*/, GdkEvent *event, SPConnectorContext *cc) { g_assert( SP_IS_CONNECTOR_CONTEXT(cc) ); gboolean consumed = FALSE; switch (event->type) { case GDK_BUTTON_PRESS: g_assert( (cc->active_handle == cc->endpt_handle[0]) || (cc->active_handle == cc->endpt_handle[1]) ); if (cc->state == SP_CONNECTOR_CONTEXT_IDLE) { cc->clickeditem = cc->active_conn; cc->clickedhandle = cc->active_handle; cc_clear_active_conn(cc); cc->state = SP_CONNECTOR_CONTEXT_REROUTING; // Disconnect from attached shape unsigned ind = (cc->active_handle == cc->endpt_handle[0]) ? 0 : 1; sp_conn_end_detach(cc->clickeditem, ind); Geom::Point origin; if (cc->clickedhandle == cc->endpt_handle[0]) { origin = cc->endpt_handle[1]->pos; } else { origin = cc->endpt_handle[0]->pos; } // Show the red path for dragging. cc->red_curve = SP_PATH(cc->clickeditem)->original_curve ? SP_PATH(cc->clickeditem)->original_curve->copy() : SP_PATH(cc->clickeditem)->curve->copy(); Geom::Matrix i2d = sp_item_i2d_affine(cc->clickeditem); cc->red_curve->transform(i2d); sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), cc->red_curve); cc->clickeditem->setHidden(true); // The rest of the interaction rerouting the connector is // handled by the context root handler. consumed = TRUE; } break; default: break; } return consumed; } static void cc_active_shape_add_knot(SPDesktop* desktop, SPItem* item, ConnectionPointMap &cphandles, ConnectionPoint& cp) { SPKnot *knot = sp_knot_new(desktop, 0); knot->setShape(SP_KNOT_SHAPE_SQUARE); knot->setSize(8); knot->setAnchor(GTK_ANCHOR_CENTER); knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff); sp_knot_update_ctrl(knot); // We don't want to use the standard knot handler. g_signal_handler_disconnect(G_OBJECT(knot->item), knot->_event_handler_id); knot->_event_handler_id = 0; gtk_signal_connect(GTK_OBJECT(knot->item), "event", GTK_SIGNAL_FUNC(cc_generic_knot_handler), knot); sp_knot_set_position(knot, item->avoidRef->getConnectionPointPos(cp.type, cp.id) * desktop->doc2dt(), 0); sp_knot_show(knot); cphandles[knot] = cp; } static void cc_set_active_shape(SPConnectorContext *cc, SPItem *item) { g_assert(item != NULL ); std::map* connpts = &item->avoidRef->connection_points; if (cc->active_shape != item) { // The active shape has changed // Rebuild everything cc->active_shape = item; // Remove existing active shape listeners if (cc->active_shape_repr) { sp_repr_remove_listener_by_data(cc->active_shape_repr, cc); Inkscape::GC::release(cc->active_shape_repr); sp_repr_remove_listener_by_data(cc->active_shape_layer_repr, cc); Inkscape::GC::release(cc->active_shape_layer_repr); } // Listen in case the active shape changes cc->active_shape_repr = SP_OBJECT_REPR(item); if (cc->active_shape_repr) { Inkscape::GC::anchor(cc->active_shape_repr); sp_repr_add_listener(cc->active_shape_repr, &shape_repr_events, cc); cc->active_shape_layer_repr = cc->active_shape_repr->parent(); Inkscape::GC::anchor(cc->active_shape_layer_repr); sp_repr_add_listener(cc->active_shape_layer_repr, &layer_repr_events, cc); } // Set the connection points. if ( cc->connpthandles.size() ) // destroy the old list while (! cc->connpthandles.empty() ) { g_object_unref(cc->connpthandles.begin()->first); cc->connpthandles.erase(cc->connpthandles.begin()); } // build the new one if ( connpts->size() ) for (std::map::iterator it = connpts->begin(); it != connpts->end(); ++it) cc_active_shape_add_knot(cc->desktop, item, cc->connpthandles, it->second); // Also add default connection points // For now, only centre default connection point will // be available ConnectionPoint centre; centre.type = ConnPointDefault; centre.id = ConnPointPosCC; cc_active_shape_add_knot(cc->desktop, item, cc->connpthandles, centre); } else { // The active shape didn't change // Update only the connection point knots // Ensure the item's connection_points map // has been updated sp_document_ensure_up_to_date(SP_OBJECT_DOCUMENT(item)); std::set seen; for ( ConnectionPointMap::iterator it = cc->connpthandles.begin(); it != cc->connpthandles.end() ;) { bool removed = false; if ( it->second.type == ConnPointUserDefined ) { std::map::iterator p = connpts->find(it->second.id); if (p != connpts->end()) { if ( it->second != p->second ) // Connection point position has changed // Update knot position sp_knot_set_position(it->first, item->avoidRef->getConnectionPointPos(it->second.type, it->second.id) * cc->desktop->doc2dt(), 0); seen.insert(it->second.id); sp_knot_show(it->first); } else { // This connection point does no longer exist, // remove the knot ConnectionPointMap::iterator curr = it; ++it; g_object_unref( curr->first ); cc->connpthandles.erase(curr); removed = true; } } else { // It's a default connection point // Just make sure it's position is correct sp_knot_set_position(it->first, item->avoidRef->getConnectionPointPos(it->second.type, it->second.id) * cc->desktop->doc2dt(), 0); sp_knot_show(it->first); } if ( !removed ) ++it; } // Add knots for new connection points. if (connpts->size()) for ( std::map::iterator it = connpts->begin(); it != connpts->end(); ++it ) if ( seen.find(it->first) == seen.end() ) // A new connection point has been added // to the shape. Add a knot for it. cc_active_shape_add_knot(cc->desktop, item, cc->connpthandles, it->second); } } static void cc_set_active_conn(SPConnectorContext *cc, SPItem *item) { g_assert( SP_IS_PATH(item) ); SPCurve *curve = SP_PATH(item)->original_curve ? SP_PATH(item)->original_curve : SP_PATH(item)->curve; Geom::Matrix i2d = sp_item_i2d_affine(item); if (cc->active_conn == item) { // Just adjust handle positions. Geom::Point startpt = *(curve->first_point()) * i2d; sp_knot_set_position(cc->endpt_handle[0], startpt, 0); Geom::Point endpt = *(curve->last_point()) * i2d; sp_knot_set_position(cc->endpt_handle[1], endpt, 0); return; } cc->active_conn = item; // Remove existing active conn listeners if (cc->active_conn_repr) { sp_repr_remove_listener_by_data(cc->active_conn_repr, cc); Inkscape::GC::release(cc->active_conn_repr); cc->active_conn_repr = NULL; } // Listen in case the active conn changes cc->active_conn_repr = SP_OBJECT_REPR(item); if (cc->active_conn_repr) { Inkscape::GC::anchor(cc->active_conn_repr); sp_repr_add_listener(cc->active_conn_repr, &shape_repr_events, cc); } for (int i = 0; i < 2; ++i) { // Create the handle if it doesn't exist if ( cc->endpt_handle[i] == NULL ) { SPKnot *knot = sp_knot_new(cc->desktop, _("Connector endpoint: drag to reroute or connect to new shapes")); knot->setShape(SP_KNOT_SHAPE_SQUARE); knot->setSize(7); knot->setAnchor(GTK_ANCHOR_CENTER); knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff); knot->setStroke(0x000000ff, 0x000000ff, 0x000000ff); sp_knot_update_ctrl(knot); // We don't want to use the standard knot handler, // since we don't want this knot to be draggable. g_signal_handler_disconnect(G_OBJECT(knot->item), knot->_event_handler_id); knot->_event_handler_id = 0; gtk_signal_connect(GTK_OBJECT(knot->item), "event", GTK_SIGNAL_FUNC(cc_generic_knot_handler), knot); cc->endpt_handle[i] = knot; } // Remove any existing handlers if (cc->endpt_handler_id[i]) { g_signal_handlers_disconnect_by_func( G_OBJECT(cc->endpt_handle[i]->item), (void*)G_CALLBACK(endpt_handler), (gpointer) cc ); cc->endpt_handler_id[i] = 0; } // Setup handlers for connector endpoints, this is // is as 'after' so that cc_generic_knot_handler is // triggered first for any endpoint. cc->endpt_handler_id[i] = g_signal_connect_after( G_OBJECT(cc->endpt_handle[i]->item), "event", G_CALLBACK(endpt_handler), cc); } Geom::Point startpt = *(curve->first_point()) * i2d; sp_knot_set_position(cc->endpt_handle[0], startpt, 0); Geom::Point endpt = *(curve->last_point()) * i2d; sp_knot_set_position(cc->endpt_handle[1], endpt, 0); sp_knot_show(cc->endpt_handle[0]); sp_knot_show(cc->endpt_handle[1]); } void cc_create_connection_point(SPConnectorContext* cc) { if (cc->active_shape && cc->state == SP_CONNECTOR_CONTEXT_IDLE) { if (cc->selected_handle) { cc_deselect_handle( cc->selected_handle ); } SPKnot *knot = sp_knot_new(cc->desktop, 0); // We do not process events on this knot. g_signal_handler_disconnect(G_OBJECT(knot->item), knot->_event_handler_id); knot->_event_handler_id = 0; cc_select_handle( knot ); cc->selected_handle = knot; sp_knot_show(cc->selected_handle); cc->state = SP_CONNECTOR_CONTEXT_NEWCONNPOINT; } } void cc_remove_connection_point(SPConnectorContext* cc) { if (cc->selected_handle && cc->state == SP_CONNECTOR_CONTEXT_IDLE ) { cc->active_shape->avoidRef->deleteConnectionPoint(cc->connpthandles[cc->selected_handle]); cc->selected_handle = NULL; } } static bool cc_item_is_shape(SPItem *item) { if (SP_IS_PATH(item)) { SPCurve *curve = (SP_SHAPE(item))->curve; if ( curve && !(curve->is_closed()) ) { // Open paths are connectors. return false; } } else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); if (prefs->getBool("/tools/connector/ignoretext", true)) { // Don't count text as a shape we can connect connector to. return false; } } return true; } bool cc_item_is_connector(SPItem *item) { if (SP_IS_PATH(item)) { if (SP_PATH(item)->connEndPair.isAutoRoutingConn()) { g_assert( SP_PATH(item)->original_curve ? !(SP_PATH(item)->original_curve->is_closed()) : !(SP_PATH(item)->curve->is_closed()) ); return true; } } return false; } void cc_selection_set_avoid(bool const set_avoid) { SPDesktop *desktop = inkscape_active_desktop(); if (desktop == NULL) { return; } SPDocument *document = sp_desktop_document(desktop); Inkscape::Selection *selection = sp_desktop_selection(desktop); GSList *l = (GSList *) selection->itemList(); int changes = 0; while (l) { SPItem *item = (SPItem *) l->data; char const *value = (set_avoid) ? "true" : NULL; if (cc_item_is_shape(item)) { sp_object_setAttribute(item, "inkscape:connector-avoid", value, false); item->avoidRef->handleSettingChange(); changes++; } l = l->next; } if (changes == 0) { desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select at least one non-connector object.")); return; } char *event_desc = (set_avoid) ? _("Make connectors avoid selected objects") : _("Make connectors ignore selected objects"); sp_document_done(document, SP_VERB_CONTEXT_CONNECTOR, event_desc); } static void cc_selection_changed(Inkscape::Selection *selection, gpointer data) { SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(data); //SPEventContext *ec = SP_EVENT_CONTEXT(cc); SPItem *item = selection->singleItem(); if (cc->active_conn == item) { // Nothing to change. return; } if (item == NULL) { cc_clear_active_conn(cc); return; } if (cc_item_is_connector(item)) { cc_set_active_conn(cc, item); } } static void shape_event_attr_deleted(Inkscape::XML::Node */*repr*/, Inkscape::XML::Node *child, Inkscape::XML::Node */*ref*/, gpointer data) { g_assert(data); SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(data); if (child == cc->active_shape_repr) { // The active shape has been deleted. Clear active shape. cc_clear_active_shape(cc); } } static void shape_event_attr_changed(Inkscape::XML::Node *repr, gchar const *name, gchar const */*old_value*/, gchar const */*new_value*/, bool /*is_interactive*/, gpointer data) { g_assert(data); SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(data); // Look for changes that result in onscreen movement. if (!strcmp(name, "d") || !strcmp(name, "x") || !strcmp(name, "y") || !strcmp(name, "width") || !strcmp(name, "height") || !strcmp(name, "transform")) { if (repr == cc->active_shape_repr) { // Active shape has moved. Clear active shape. cc_clear_active_shape(cc); } else if (repr == cc->active_conn_repr) { // The active conn has been moved. // Set it again, which just sets new handle positions. cc_set_active_conn(cc, cc->active_conn); } } else if ( !strcmp(name, "inkscape:connection-points") ) if (repr == cc->active_shape_repr) // The connection points of the active shape // have changed. Update them. cc_set_active_shape(cc, cc->active_shape); } /* 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:encoding=utf-8:textwidth=99 :