307d59d1f5f2efad35e2068b78e710424d0b71f3
1 /*
2 * Connector creation tool
3 *
4 * Authors:
5 * Michael Wybrow <mjwybrow@users.sourceforge.net>
6 *
7 * Copyright (C) 2005-2008 Michael Wybrow
8 * Copyright (C) 2009 Monash University
9 *
10 * Released under GNU GPL, read the file 'COPYING' for more information
11 *
12 * TODO:
13 * o Show a visual indicator for objects with the 'avoid' property set.
14 * o Allow user to change a object between a path and connector through
15 * the interface.
16 * o Create an interface for setting markers (arrow heads).
17 * o Better distinguish between paths and connectors to prevent problems
18 * in the node tool and paths accidentally being turned into connectors
19 * in the connector tool. Perhaps have a way to convert between.
20 * o Only call libavoid's updateEndPoint as required. Currently we do it
21 * for both endpoints, even if only one is moving.
22 * o Allow user-placeable connection points.
23 * o Deal sanely with connectors with both endpoints attached to the
24 * same connection point, and drawing of connectors attaching
25 * overlapping shapes (currently tries to adjust connector to be
26 * outside both bounding boxes).
27 * o Fix many special cases related to connectors updating,
28 * e.g., copying a couple of shapes and a connector that are
29 * attached to each other.
30 * e.g., detach connector when it is moved or transformed in
31 * one of the other contexts.
32 * o Cope with shapes whose ids change when they have attached
33 * connectors.
34 * o During dragging motion, gobble up to and use the final motion event.
35 * Gobbling away all duplicates after the current can occasionally result
36 * in the path lagging behind the mouse cursor if it is no longer being
37 * dragged.
38 * o Fix up libavoid's representation after undo actions. It doesn't see
39 * any transform signals and hence doesn't know shapes have moved back to
40 * there earlier positions.
41 * o Decide whether drawing/editing mode should be an Inkscape preference
42 * or the connector tool should always start in drawing mode.
43 * o Correct the problem with switching to the select tool when pressing
44 * space bar (there are moments when it refuses to do so).
45 *
46 * ----------------------------------------------------------------------------
47 *
48 * mjwybrow's observations on acracan's Summer of Code connector work:
49 *
50 * - GUI comments:
51 *
52 * - Buttons for adding and removing user-specified connection
53 * points should probably have "+" and "-" symbols on them so they
54 * are consistent with the similar buttons for the node tool.
55 * - Controls on the connector tool be should be reordered logically,
56 * possibly as follows:
57 *
58 * *Connector*: [Polyline-radio-button] [Orthgonal-radio-button]
59 * [Curvature-control] | *Shape*: [Avoid-button] [Dont-avoid-button]
60 * [Spacing-control] | *Connection pts*: [Edit-mode] [Add-pt] [Rm-pt]
61 *
62 * I think that the network layout controls be moved to the
63 * Align and Distribute dialog (there is already the layout button
64 * there, but no options are exposed).
65 *
66 * I think that the style change between polyline and orthogonal
67 * would be much clearer with two buttons (radio behaviour -- just
68 * one is true).
69 *
70 * The other tools show a label change from "New:" to "Change:"
71 * depending on whether an object is selected. We could consider
72 * this but there may not be space.
73 *
74 * The Add-pt and Rm-pt buttons should be greyed out (inactive) if
75 * we are not in connection point editing mode. And probably also
76 * if there is no shape selected, i.e. at the times they have no
77 * effect when clicked.
78 *
79 * Likewise for the avoid/ignore shapes buttons. These should be
80 * inactive when a shape is not selected in the connector context.
81 *
82 * - When creating/editing connection points:
83 *
84 * - Strange things can happen if you have connectors selected, or
85 * try rerouting connectors by dragging their endpoints when in
86 * connection point editing mode.
87 *
88 * - Possibly the selected shape's connection points should always
89 * be shown (i.e., have knots) when in editing mode.
90 *
91 * - It is a little strange to be able to place connection points
92 * competely outside shapes. Especially when you later can't draw
93 * connectors to them since the knots are only visible when you
94 * are over the shape. I think that you should only be able to
95 * place connection points inside or on the boundary of the shape
96 * itself.
97 *
98 * - The intended ability to place a new point at the current cursor
99 * position by pressing RETURN does not seem to work.
100 *
101 * - The Status bar tooltip should change to reflect editing mode
102 * and tell the user about RETURN and how to use the tool.
103 *
104 * - Connection points general:
105 *
106 * - Connection points that were inside the shape can end up outside
107 * after a rotation is applied to the shape in the select tool.
108 * It doesn't seem like the correct transform is being applied to
109 * these, or it is being applied at the wrong time. I'd expect
110 * connection points to rotate with the shape, and stay at the
111 * same position "on the shape"
112 *
113 * - I was able to make the connectors attached to a shape fall off
114 * the shape after scaling it. Not sure the exact cause, but may
115 * require more investigation/debugging.
116 *
117 * - The user-defined connection points should be either absolute
118 * (as the current ones are) or defined as a percentage of the
119 * shape. These would be based on a toggle setting on the
120 * toolbar, and they would be placed in exactly the same way by
121 * the user. The only difference would be that they would be
122 * store as percentage positions in the SVG connection-points
123 * property and that they would update/move automatically if the
124 * object was resized or scaled.
125 *
126 * - Thinking more, I think you always want to store and think about
127 * the positions of connection points to be pre-transform, but
128 * obviously the shape transform is applied to them. That way,
129 * they will rotate and scale automatically with the shape, when
130 * the shape transform is altered. The Percentage version would
131 * compute their position from the pre-transform dimensions and
132 * then have the transform applied to them, for example.
133 *
134 * - The connection points in the test_connection_points.svg file
135 * seem to follow the shape when it is moved, but connection
136 * points I add to new shapes, do not follow the shape, either
137 * when the shape is just moved or transformed. There is
138 * something wrong here. What exactly should the behaviour be
139 * currently?
140 *
141 * - I see that connection points are specified at absolute canvas
142 * positions. I really think that they should be specified in
143 * shape coordinated relative to the shapes. There may be
144 * transforms applied to layers and the canvas which would make
145 * specifying them quite difficult. I'd expect a position of 0, 0
146 * to be on the shape in question or very close to it, for example.
147 *
148 */
152 #include <gdk/gdkkeysyms.h>
153 #include <string>
154 #include <cstring>
156 #include "connector-context.h"
157 #include "pixmaps/cursor-connector.xpm"
158 #include "pixmaps/cursor-node.xpm"
159 #include "pixmaps/cursor-node-m.xpm"
160 #include "pixmaps/cursor-node-d.xpm"
161 #include "xml/node-event-vector.h"
162 #include "xml/repr.h"
163 #include "svg/svg.h"
164 #include "desktop.h"
165 #include "desktop-style.h"
166 #include "desktop-handles.h"
167 #include "document.h"
168 #include "message-context.h"
169 #include "message-stack.h"
170 #include "selection.h"
171 #include "inkscape.h"
172 #include "preferences.h"
173 #include "sp-path.h"
174 #include "display/canvas-bpath.h"
175 #include "display/sodipodi-ctrl.h"
176 #include <glibmm/i18n.h>
177 #include <glibmm/stringutils.h>
178 #include "snap.h"
179 #include "knot.h"
180 #include "sp-conn-end.h"
181 #include "sp-conn-end-pair.h"
182 #include "conn-avoid-ref.h"
183 #include "libavoid/vertices.h"
184 #include "libavoid/router.h"
185 #include "context-fns.h"
186 #include "sp-namedview.h"
187 #include "sp-text.h"
188 #include "sp-flowtext.h"
189 #include "display/curve.h"
191 static void sp_connector_context_class_init(SPConnectorContextClass *klass);
192 static void sp_connector_context_init(SPConnectorContext *conn_context);
193 static void sp_connector_context_dispose(GObject *object);
195 static void sp_connector_context_setup(SPEventContext *ec);
196 static void sp_connector_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val);
197 static void sp_connector_context_finish(SPEventContext *ec);
198 static gint sp_connector_context_root_handler(SPEventContext *ec, GdkEvent *event);
199 static gint sp_connector_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
201 // Stuff borrowed from DrawContext
202 static void spcc_connector_set_initial_point(SPConnectorContext *cc, Geom::Point const p);
203 static void spcc_connector_set_subsequent_point(SPConnectorContext *cc, Geom::Point const p);
204 static void spcc_connector_finish_segment(SPConnectorContext *cc, Geom::Point p);
205 static void spcc_reset_colors(SPConnectorContext *cc);
206 static void spcc_connector_finish(SPConnectorContext *cc);
207 static void spcc_concat_colors_and_flush(SPConnectorContext *cc);
208 static void spcc_flush_white(SPConnectorContext *cc, SPCurve *gc);
210 // Context event handlers
211 static gint connector_handle_button_press(SPConnectorContext *const cc, GdkEventButton const &bevent);
212 static gint connector_handle_motion_notify(SPConnectorContext *const cc, GdkEventMotion const &mevent);
213 static gint connector_handle_button_release(SPConnectorContext *const cc, GdkEventButton const &revent);
214 static gint connector_handle_key_press(SPConnectorContext *const cc, guint const keyval);
216 static void cc_active_shape_add_knot(SPDesktop* desktop, SPItem* item, ConnectionPointMap &cphandles, ConnectionPoint& cp);
217 static void cc_set_active_shape(SPConnectorContext *cc, SPItem *item);
218 static void cc_clear_active_shape(SPConnectorContext *cc);
219 static void cc_set_active_conn(SPConnectorContext *cc, SPItem *item);
220 static void cc_clear_active_conn(SPConnectorContext *cc);
221 static gchar *conn_pt_handle_test(SPConnectorContext *cc, Geom::Point& w);
222 static void cc_select_handle(SPKnot* knot);
223 static void cc_deselect_handle(SPKnot* knot);
224 static bool cc_item_is_shape(SPItem *item);
225 static void cc_selection_changed(Inkscape::Selection *selection, gpointer data);
226 static void cc_connector_rerouting_finish(SPConnectorContext *const cc,
227 Geom::Point *const p);
229 static void shape_event_attr_deleted(Inkscape::XML::Node *repr,
230 Inkscape::XML::Node *child, Inkscape::XML::Node *ref, gpointer data);
231 static void shape_event_attr_changed(Inkscape::XML::Node *repr, gchar const *name,
232 gchar const *old_value, gchar const *new_value, bool is_interactive,
233 gpointer data);
236 /*static Geom::Point connector_drag_origin_w(0, 0);
237 static bool connector_within_tolerance = false;*/
238 static SPEventContextClass *parent_class;
241 static Inkscape::XML::NodeEventVector shape_repr_events = {
242 NULL, /* child_added */
243 NULL, /* child_added */
244 shape_event_attr_changed,
245 NULL, /* content_changed */
246 NULL /* order_changed */
247 };
249 static Inkscape::XML::NodeEventVector layer_repr_events = {
250 NULL, /* child_added */
251 shape_event_attr_deleted,
252 NULL, /* child_added */
253 NULL, /* content_changed */
254 NULL /* order_changed */
255 };
258 GType
259 sp_connector_context_get_type(void)
260 {
261 static GType type = 0;
262 if (!type) {
263 GTypeInfo info = {
264 sizeof(SPConnectorContextClass),
265 NULL, NULL,
266 (GClassInitFunc) sp_connector_context_class_init,
267 NULL, NULL,
268 sizeof(SPConnectorContext),
269 4,
270 (GInstanceInitFunc) sp_connector_context_init,
271 NULL, /* value_table */
272 };
273 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPConnectorContext", &info, (GTypeFlags)0);
274 }
275 return type;
276 }
278 static void
279 sp_connector_context_class_init(SPConnectorContextClass *klass)
280 {
281 GObjectClass *object_class;
282 SPEventContextClass *event_context_class;
284 object_class = (GObjectClass *) klass;
285 event_context_class = (SPEventContextClass *) klass;
287 parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
289 object_class->dispose = sp_connector_context_dispose;
291 event_context_class->setup = sp_connector_context_setup;
292 event_context_class->set = sp_connector_context_set;
293 event_context_class->finish = sp_connector_context_finish;
294 event_context_class->root_handler = sp_connector_context_root_handler;
295 event_context_class->item_handler = sp_connector_context_item_handler;
296 }
299 static void
300 sp_connector_context_init(SPConnectorContext *cc)
301 {
302 SPEventContext *ec = SP_EVENT_CONTEXT(cc);
304 ec->cursor_shape = cursor_connector_xpm;
305 ec->hot_x = 1;
306 ec->hot_y = 1;
307 ec->xp = 0;
308 ec->yp = 0;
310 cc->mode = SP_CONNECTOR_CONTEXT_DRAWING_MODE;
311 cc->knot_tip = 0;
313 cc->red_color = 0xff00007f;
315 cc->newconn = NULL;
316 cc->newConnRef = NULL;
317 cc->curvature = 0.0;
319 cc->sel_changed_connection = sigc::connection();
321 cc->active_shape = NULL;
322 cc->active_shape_repr = NULL;
323 cc->active_shape_layer_repr = NULL;
325 cc->active_conn = NULL;
326 cc->active_conn_repr = NULL;
328 cc->active_handle = NULL;
330 cc->selected_handle = NULL;
332 cc->clickeditem = NULL;
333 cc->clickedhandle = NULL;
335 new (&cc->connpthandles) ConnectionPointMap();
337 for (int i = 0; i < 2; ++i) {
338 cc->endpt_handle[i] = NULL;
339 cc->endpt_handler_id[i] = 0;
340 }
341 cc->sid = NULL;
342 cc->eid = NULL;
343 cc->npoints = 0;
344 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
345 }
348 static void
349 sp_connector_context_dispose(GObject *object)
350 {
351 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(object);
353 cc->sel_changed_connection.disconnect();
355 if (!cc->connpthandles.empty()) {
356 for (ConnectionPointMap::iterator it = cc->connpthandles.begin();
357 it != cc->connpthandles.end(); ++it) {
358 g_object_unref(it->first);
359 }
360 cc->connpthandles.clear();
361 }
362 cc->connpthandles.~ConnectionPointMap();
363 for (int i = 0; i < 2; ++i) {
364 if (cc->endpt_handle[1]) {
365 g_object_unref(cc->endpt_handle[i]);
366 cc->endpt_handle[i] = NULL;
367 }
368 }
369 if (cc->sid) {
370 g_free(cc->sid);
371 cc->sid = NULL;
372 }
373 if (cc->eid) {
374 g_free(cc->eid);
375 cc->eid = NULL;
376 }
377 g_assert( cc->newConnRef == NULL );
379 G_OBJECT_CLASS(parent_class)->dispose(object);
380 }
383 static void
384 sp_connector_context_setup(SPEventContext *ec)
385 {
386 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec);
387 SPDesktop *dt = ec->desktop;
389 if (((SPEventContextClass *) parent_class)->setup) {
390 ((SPEventContextClass *) parent_class)->setup(ec);
391 }
393 cc->selection = sp_desktop_selection(dt);
395 cc->sel_changed_connection.disconnect();
396 cc->sel_changed_connection = cc->selection->connectChanged(
397 sigc::bind(sigc::ptr_fun(&cc_selection_changed),
398 (gpointer) cc));
400 /* Create red bpath */
401 cc->red_bpath = sp_canvas_bpath_new(sp_desktop_sketch(ec->desktop), NULL);
402 sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(cc->red_bpath), cc->red_color,
403 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
404 sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(cc->red_bpath), 0x00000000,
405 SP_WIND_RULE_NONZERO);
406 /* Create red curve */
407 cc->red_curve = new SPCurve();
409 /* Create green curve */
410 cc->green_curve = new SPCurve();
412 // Notice the initial selection.
413 cc_selection_changed(cc->selection, (gpointer) cc);
415 cc->within_tolerance = false;
417 sp_event_context_read(ec, "curvature");
418 sp_event_context_read(ec, "orthogonal");
419 sp_event_context_read(ec, "mode");
420 cc->knot_tip = cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE ? cc_knot_tips[0] : cc_knot_tips[1];
421 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
422 if (prefs->getBool("/tools/connector/selcue", 0)) {
423 ec->enableSelectionCue();
424 }
426 // Make sure we see all enter events for canvas items,
427 // even if a mouse button is depressed.
428 dt->canvas->gen_all_enter_events = true;
429 }
432 static void
433 sp_connector_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val)
434 {
435 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec);
437 /* fixme: Proper error handling for non-numeric data. Use a locale-independent function like
438 * g_ascii_strtod (or a thin wrapper that does the right thing for invalid values inf/nan). */
439 Glib::ustring name = val->getEntryName();
440 if ( name == "curvature" ) {
441 cc->curvature = val->getDoubleLimited(); // prevents NaN and +/-Inf from messing up
442 }
443 else if ( name == "orthogonal" ) {
444 cc->isOrthogonal = val->getBool();
445 }
446 else if ( name == "mode")
447 {
448 sp_connector_context_switch_mode(ec, val->getBool() ? SP_CONNECTOR_CONTEXT_EDITING_MODE : SP_CONNECTOR_CONTEXT_DRAWING_MODE);
449 }
450 }
452 void sp_connector_context_switch_mode(SPEventContext* ec, unsigned int newMode)
453 {
454 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec);
456 cc->mode = newMode;
457 if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE )
458 {
459 ec->cursor_shape = cursor_connector_xpm;
460 cc->knot_tip = cc_knot_tips[0];
461 if (cc->selected_handle)
462 cc_deselect_handle( cc->selected_handle );
463 cc->selected_handle = NULL;
464 // Show all default connection points
466 }
467 else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE )
468 {
469 ec->cursor_shape = cursor_node_xpm;
470 cc->knot_tip = cc_knot_tips[1];
471 /* if (cc->active_shape)
472 {
473 cc->selection->set( SP_OBJECT( cc->active_shape ) );
474 }
475 else
476 {
477 SPItem* item = cc->selection->singleItem();
478 if ( item )
479 {
480 cc_set_active_shape(cc, item);
481 cc->selection->set( SP_OBJECT( item ) );
482 }
483 }*/
484 }
485 sp_event_context_update_cursor(ec);
487 }
490 static void
491 sp_connector_context_finish(SPEventContext *ec)
492 {
493 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec);
495 spcc_connector_finish(cc);
496 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
498 if (((SPEventContextClass *) parent_class)->finish) {
499 ((SPEventContextClass *) parent_class)->finish(ec);
500 }
502 if (cc->selection) {
503 cc->selection = NULL;
504 }
505 cc_clear_active_shape(cc);
506 cc_clear_active_conn(cc);
508 // Restore the default event generating behaviour.
509 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(ec);
510 desktop->canvas->gen_all_enter_events = false;
511 }
514 //-----------------------------------------------------------------------------
517 static void
518 cc_clear_active_shape(SPConnectorContext *cc)
519 {
520 if (cc->active_shape == NULL) {
521 return;
522 }
523 g_assert( cc->active_shape_repr );
524 g_assert( cc->active_shape_layer_repr );
526 cc->active_shape = NULL;
528 if (cc->active_shape_repr) {
529 sp_repr_remove_listener_by_data(cc->active_shape_repr, cc);
530 Inkscape::GC::release(cc->active_shape_repr);
531 cc->active_shape_repr = NULL;
533 sp_repr_remove_listener_by_data(cc->active_shape_layer_repr, cc);
534 Inkscape::GC::release(cc->active_shape_layer_repr);
535 cc->active_shape_layer_repr = NULL;
536 }
538 // Hide the connection points if they exist.
539 if (cc->connpthandles.size()) {
540 for (ConnectionPointMap::iterator it = cc->connpthandles.begin();
541 it != cc->connpthandles.end(); ++it) {
542 sp_knot_hide(it->first);
543 }
544 }
545 }
548 static void
549 cc_clear_active_conn(SPConnectorContext *cc)
550 {
551 if (cc->active_conn == NULL) {
552 return;
553 }
554 g_assert( cc->active_conn_repr );
556 cc->active_conn = NULL;
558 if (cc->active_conn_repr) {
559 sp_repr_remove_listener_by_data(cc->active_conn_repr, cc);
560 Inkscape::GC::release(cc->active_conn_repr);
561 cc->active_conn_repr = NULL;
562 }
564 // Hide the endpoint handles.
565 for (int i = 0; i < 2; ++i) {
566 if (cc->endpt_handle[i]) {
567 sp_knot_hide(cc->endpt_handle[i]);
568 }
569 }
570 }
573 static gchar *
574 conn_pt_handle_test(SPConnectorContext *cc, Geom::Point& p)
575 {
576 // TODO: this will need to change when there are more connection
577 // points available for each shape.
579 if (cc->active_handle && (cc->connpthandles.find(cc->active_handle) != cc->connpthandles.end()))
580 {
581 p = cc->active_handle->pos;
582 const ConnectionPoint& cp = cc->connpthandles[cc->active_handle];
583 return g_strdup_printf("#%s_%c_%d", SP_OBJECT_ID(cc->active_shape),
584 cp.type == ConnPointDefault ? 'd' : 'u' , cp.id);
585 }
586 return NULL;
587 }
589 static void
590 cc_select_handle(SPKnot* knot)
591 {
592 knot->setShape(SP_KNOT_SHAPE_SQUARE);
593 knot->setSize(10);
594 knot->setAnchor(GTK_ANCHOR_CENTER);
595 knot->setFill(0x0000ffff, 0x0000ffff, 0x0000ffff);
596 sp_knot_update_ctrl(knot);
597 }
599 static void
600 cc_deselect_handle(SPKnot* knot)
601 {
602 knot->setShape(SP_KNOT_SHAPE_SQUARE);
603 knot->setSize(8);
604 knot->setAnchor(GTK_ANCHOR_CENTER);
605 knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff);
606 sp_knot_update_ctrl(knot);
607 }
609 static gint
610 sp_connector_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
611 {
612 gint ret = FALSE;
614 SPDesktop *desktop = event_context->desktop;
616 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(event_context);
618 Geom::Point p(event->button.x, event->button.y);
620 switch (event->type) {
621 case GDK_BUTTON_RELEASE:
622 if (event->button.button == 1 && !event_context->space_panning) {
623 if ((cc->state == SP_CONNECTOR_CONTEXT_DRAGGING) &&
624 (event_context->within_tolerance))
625 {
626 spcc_reset_colors(cc);
627 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
628 // sp_event_context_snap_window_closed(event_context);
629 }
630 if (cc->state != SP_CONNECTOR_CONTEXT_IDLE) {
631 // Doing something else like rerouting.
632 break;
633 }
634 // find out clicked item, honoring Alt
635 SPItem *item = sp_event_context_find_item(desktop,
636 p, event->button.state & GDK_MOD1_MASK, FALSE);
638 if (event->button.state & GDK_SHIFT_MASK) {
639 cc->selection->toggle(item);
640 } else {
641 cc->selection->set(item);
642 if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE && cc->selected_handle )
643 {
644 cc_deselect_handle( cc->selected_handle );
645 cc->selected_handle = NULL;
646 }
647 /* When selecting a new item,
648 do not allow showing connection points
649 on connectors. (yet?)
650 */
651 if ( item != cc->active_shape && !cc_item_is_connector( item ) )
652 cc_set_active_shape( cc, item );
653 }
654 ret = TRUE;
656 }
657 break;
658 case GDK_ENTER_NOTIFY:
659 {
660 if (cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE || (cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE && !cc->selected_handle))
661 {
662 if (cc_item_is_shape(item)) {
664 // I don't really understand what the above does,
665 // so I commented it.
666 // This is a shape, so show connection point(s).
667 /* if (!(cc->active_shape)
668 // Don't show handle for another handle.
669 // || (cc->connpthandles.find((SPKnot*) item) != cc->connpthandles.end())
670 )
671 {
672 cc_set_active_shape(cc, item);
673 }*/
674 cc_set_active_shape(cc, item);
675 }
676 ret = TRUE;
677 }
678 break;
679 }
680 default:
681 break;
682 }
684 return ret;
685 }
688 gint
689 sp_connector_context_root_handler(SPEventContext *ec, GdkEvent *event)
690 {
691 SPConnectorContext *const cc = SP_CONNECTOR_CONTEXT(ec);
693 gint ret = FALSE;
695 switch (event->type) {
696 case GDK_BUTTON_PRESS:
697 ret = connector_handle_button_press(cc, event->button);
698 break;
700 case GDK_MOTION_NOTIFY:
701 ret = connector_handle_motion_notify(cc, event->motion);
702 break;
704 case GDK_BUTTON_RELEASE:
705 ret = connector_handle_button_release(cc, event->button);
706 break;
707 case GDK_KEY_PRESS:
708 ret = connector_handle_key_press(cc, get_group0_keyval (&event->key));
709 break;
711 default:
712 break;
713 }
715 if (!ret) {
716 gint (*const parent_root_handler)(SPEventContext *, GdkEvent *)
717 = ((SPEventContextClass *) parent_class)->root_handler;
718 if (parent_root_handler) {
719 ret = parent_root_handler(ec, event);
720 }
721 }
723 return ret;
724 }
727 static gint
728 connector_handle_button_press(SPConnectorContext *const cc, GdkEventButton const &bevent)
729 {
730 Geom::Point const event_w(bevent.x, bevent.y);
731 /* Find desktop coordinates */
732 Geom::Point p = cc->desktop->w2d(event_w);
733 SPEventContext *event_context = SP_EVENT_CONTEXT(cc);
735 gint ret = FALSE;
736 if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE )
737 {
738 if ( bevent.button == 1 && !event_context->space_panning ) {
740 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
742 if (Inkscape::have_viable_layer(desktop, cc->_message_context) == false) {
743 return TRUE;
744 }
746 Geom::Point const event_w(bevent.x,
747 bevent.y);
748 // connector_drag_origin_w = event_w;
749 cc->xp = bevent.x;
750 cc->yp = bevent.y;
751 cc->within_tolerance = true;
753 Geom::Point const event_dt = cc->desktop->w2d(event_w);
755 SnapManager &m = cc->desktop->namedview->snap_manager;
756 m.setup(cc->desktop);
758 switch (cc->state) {
759 case SP_CONNECTOR_CONTEXT_STOP:
760 /* This is allowed, if we just cancelled curve */
761 case SP_CONNECTOR_CONTEXT_IDLE:
762 {
763 if ( cc->npoints == 0 ) {
764 cc_clear_active_conn(cc);
766 SP_EVENT_CONTEXT_DESKTOP(cc)->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating new connector"));
768 /* Set start anchor */
769 /* Create green anchor */
770 Geom::Point p = event_dt;
772 // Test whether we clicked on a connection point
773 cc->sid = conn_pt_handle_test(cc, p);
775 // sp_event_context_snap_window_open(event_context);
777 if (!cc->sid) {
778 // This is the first point, so just snap it to the grid
779 // as there's no other points to go off.
780 m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, p, Inkscape::SNAPSOURCE_HANDLE);
781 }
782 spcc_connector_set_initial_point(cc, p);
784 }
785 cc->state = SP_CONNECTOR_CONTEXT_DRAGGING;
786 ret = TRUE;
787 break;
788 }
789 case SP_CONNECTOR_CONTEXT_DRAGGING:
790 {
791 // This is the second click of a connector creation.
792 m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, p, Inkscape::SNAPSOURCE_HANDLE);
794 spcc_connector_set_subsequent_point(cc, p);
795 spcc_connector_finish_segment(cc, p);
796 // Test whether we clicked on a connection point
797 cc->eid = conn_pt_handle_test(cc, p);
798 if (cc->npoints != 0) {
799 spcc_connector_finish(cc);
800 }
801 cc_set_active_conn(cc, cc->newconn);
802 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
803 // sp_event_context_snap_window_closed(event_context);
804 ret = TRUE;
805 break;
806 }
807 case SP_CONNECTOR_CONTEXT_CLOSE:
808 {
809 g_warning("Button down in CLOSE state");
810 break;
811 }
812 default:
813 break;
814 }
815 } else if (bevent.button == 3) {
816 if (cc->state == SP_CONNECTOR_CONTEXT_REROUTING) {
817 // A context menu is going to be triggered here,
818 // so end the rerouting operation.
819 cc_connector_rerouting_finish(cc, &p);
821 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
822 // sp_event_context_snap_window_closed(event_context);
824 // Don't set ret to TRUE, so we drop through to the
825 // parent handler which will open the context menu.
826 }
827 else if (cc->npoints != 0) {
828 spcc_connector_finish(cc);
829 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
830 // sp_event_context_snap_window_closed(event_context);
831 ret = TRUE;
832 }
833 }
834 }
835 else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE )
836 {
837 if ( bevent.button == 1 && !event_context->space_panning )
838 {
839 // Initialize variables in case of dragging
841 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
843 if (Inkscape::have_viable_layer(desktop, cc->_message_context) == false) {
844 return TRUE;
845 }
847 cc->xp = bevent.x;
848 cc->yp = bevent.y;
849 cc->within_tolerance = true;
851 ConnectionPointMap::iterator const& active_knot_it = cc->connpthandles.find( cc->active_handle );
853 switch (cc->state)
854 {
855 case SP_CONNECTOR_CONTEXT_IDLE:
856 if ( active_knot_it != cc->connpthandles.end() )
857 {
858 // We do not allow selecting and, thereby, moving default knots
859 if ( active_knot_it->second.type != ConnPointDefault)
860 {
861 if (cc->selected_handle != cc->active_handle)
862 {
863 if ( cc->selected_handle )
864 cc_deselect_handle( cc->selected_handle );
865 cc->selected_handle = cc->active_handle;
866 cc_select_handle( cc->selected_handle );
867 }
868 }
869 else
870 // Just ignore the default connection point
871 return FALSE;
872 }
873 else
874 if ( cc->selected_handle )
875 {
876 cc_deselect_handle( cc->selected_handle );
877 cc->selected_handle = NULL;
878 }
880 if ( cc->selected_handle )
881 {
882 // sp_event_context_snap_window_open(event_context);
883 cc->state = SP_CONNECTOR_CONTEXT_DRAGGING;
884 cc->selection->set( SP_OBJECT( cc->active_shape ) );
885 }
887 ret = TRUE;
888 break;
889 // Dragging valid because of the way we create
890 // new connection points.
891 case SP_CONNECTOR_CONTEXT_DRAGGING:
892 // Do nothing.
893 ret = TRUE;
894 break;
895 }
896 }
897 }
898 return ret;
899 }
902 static gint
903 connector_handle_motion_notify(SPConnectorContext *const cc, GdkEventMotion const &mevent)
904 {
905 gint ret = FALSE;
906 SPEventContext *event_context = SP_EVENT_CONTEXT(cc);
907 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
909 if (event_context->space_panning || mevent.state & GDK_BUTTON2_MASK || mevent.state & GDK_BUTTON3_MASK) {
910 // allow middle-button scrolling
911 return FALSE;
912 }
914 Geom::Point const event_w(mevent.x, mevent.y);
916 if (cc->within_tolerance) {
917 cc->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
918 if ( ( abs( (gint) mevent.x - cc->xp ) < cc->tolerance ) &&
919 ( abs( (gint) mevent.y - cc->yp ) < cc->tolerance ) ) {
920 return FALSE; // Do not drag if we're within tolerance from origin.
921 }
922 }
923 // Once the user has moved farther than tolerance from the original location
924 // (indicating they intend to move the object, not click), then always process
925 // the motion notify coordinates as given (no snapping back to origin)
926 cc->within_tolerance = false;
928 SPDesktop *const dt = cc->desktop;
930 /* Find desktop coordinates */
931 Geom::Point p = dt->w2d(event_w);
933 if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE )
934 {
935 SnapManager &m = dt->namedview->snap_manager;
936 m.setup(dt);
938 switch (cc->state) {
939 case SP_CONNECTOR_CONTEXT_DRAGGING:
940 {
941 gobble_motion_events(mevent.state);
942 // This is movement during a connector creation.
943 if ( cc->npoints > 0 ) {
944 m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, p,
945 Inkscape::SNAPSOURCE_HANDLE);
946 cc->selection->clear();
947 spcc_connector_set_subsequent_point(cc, p);
948 ret = TRUE;
949 }
950 break;
951 }
952 case SP_CONNECTOR_CONTEXT_REROUTING:
953 {
954 gobble_motion_events(GDK_BUTTON1_MASK);
955 g_assert( SP_IS_PATH(cc->clickeditem));
957 m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, p,
958 Inkscape::SNAPSOURCE_HANDLE);
960 // Update the hidden path
961 Geom::Matrix i2d = sp_item_i2d_affine(cc->clickeditem);
962 Geom::Matrix d2i = i2d.inverse();
963 SPPath *path = SP_PATH(cc->clickeditem);
964 SPCurve *curve = path->original_curve ? path->original_curve : path->curve;
965 if (cc->clickedhandle == cc->endpt_handle[0]) {
966 Geom::Point o = cc->endpt_handle[1]->pos;
967 curve->stretch_endpoints(p * d2i, o * d2i);
968 }
969 else {
970 Geom::Point o = cc->endpt_handle[0]->pos;
971 curve->stretch_endpoints(o * d2i, p * d2i);
972 }
973 sp_conn_reroute_path_immediate(path);
975 // Copy this to the temporary visible path
976 cc->red_curve = path->original_curve ?
977 path->original_curve->copy() : path->curve->copy();
978 cc->red_curve->transform(i2d);
980 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), cc->red_curve);
981 ret = TRUE;
982 break;
983 }
984 case SP_CONNECTOR_CONTEXT_STOP:
985 /* This is perfectly valid */
986 break;
987 default:
988 break;
989 }
990 }
991 else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE )
992 {
993 switch ( cc->state )
994 {
995 case SP_CONNECTOR_CONTEXT_DRAGGING:
996 sp_knot_set_position(cc->selected_handle, p, 0);
997 ret = TRUE;
998 break;
999 case SP_CONNECTOR_CONTEXT_NEWCONNPOINT:
1000 sp_knot_set_position(cc->selected_handle, p, 0);
1001 ret = TRUE;
1002 break;
1003 }
1004 }
1006 return ret;
1007 }
1010 static gint
1011 connector_handle_button_release(SPConnectorContext *const cc, GdkEventButton const &revent)
1012 {
1013 gint ret = FALSE;
1014 SPEventContext *event_context = SP_EVENT_CONTEXT(cc);
1015 if ( revent.button == 1 && !event_context->space_panning ) {
1017 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1018 SPDocument *doc = sp_desktop_document(desktop);
1020 SnapManager &m = desktop->namedview->snap_manager;
1021 m.setup(desktop);
1023 Geom::Point const event_w(revent.x, revent.y);
1025 /* Find desktop coordinates */
1026 Geom::Point p = cc->desktop->w2d(event_w);
1027 if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE )
1028 {
1029 switch (cc->state) {
1030 //case SP_CONNECTOR_CONTEXT_POINT:
1031 case SP_CONNECTOR_CONTEXT_DRAGGING:
1032 {
1033 m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, p, Inkscape::SNAPSOURCE_HANDLE);
1035 if (cc->within_tolerance)
1036 {
1037 spcc_connector_finish_segment(cc, p);
1038 return TRUE;
1039 }
1040 // Connector has been created via a drag, end it now.
1041 spcc_connector_set_subsequent_point(cc, p);
1042 spcc_connector_finish_segment(cc, p);
1043 // Test whether we clicked on a connection point
1044 cc->eid = conn_pt_handle_test(cc, p);
1045 if (cc->npoints != 0) {
1046 spcc_connector_finish(cc);
1047 }
1048 cc_set_active_conn(cc, cc->newconn);
1049 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1050 // sp_event_context_snap_window_closed(event_context);
1051 break;
1052 }
1053 case SP_CONNECTOR_CONTEXT_REROUTING:
1054 {
1055 m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, p, Inkscape::SNAPSOURCE_HANDLE);
1056 cc_connector_rerouting_finish(cc, &p);
1058 sp_document_ensure_up_to_date(doc);
1059 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1060 // sp_event_context_snap_window_closed(event_context);
1061 return TRUE;
1062 break;
1063 }
1064 case SP_CONNECTOR_CONTEXT_STOP:
1065 /* This is allowed, if we just cancelled curve */
1066 break;
1067 default:
1068 break;
1069 }
1070 ret = TRUE;
1071 }
1072 else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE )
1073 {
1074 switch ( cc->state )
1075 {
1076 case SP_CONNECTOR_CONTEXT_DRAGGING:
1078 if (!cc->within_tolerance)
1079 {
1080 // sp_event_context_snap_window_open(event_context);
1081 m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, p, Inkscape::SNAPSOURCE_HANDLE);
1082 sp_knot_set_position(cc->selected_handle, p, 0);
1083 // sp_event_context_snap_window_closed(event_context);
1084 ConnectionPoint& cp = cc->connpthandles[cc->selected_handle];
1085 cp.pos = p * sp_item_dt2i_affine(cc->active_shape);
1086 cc->active_shape->avoidRef->updateConnectionPoint(cp);
1087 }
1089 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1090 ret = TRUE;
1091 break;
1094 case SP_CONNECTOR_CONTEXT_NEWCONNPOINT:
1095 // sp_event_context_snap_window_open( event_context );
1096 m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, p, Inkscape::SNAPSOURCE_HANDLE);
1098 sp_knot_set_position(cc->selected_handle, p, 0);
1099 // sp_event_context_snap_window_closed(event_context);
1101 ConnectionPoint cp;
1102 cp.type = ConnPointUserDefined;
1103 cp.pos = p * sp_item_dt2i_affine(cc->active_shape);
1104 cp.dir = Avoid::ConnDirAll;
1105 g_object_unref(cc->selected_handle);
1106 cc->active_shape->avoidRef->addConnectionPoint(cp);
1107 sp_document_ensure_up_to_date(doc);
1108 for (ConnectionPointMap::iterator it = cc->connpthandles.begin(); it != cc->connpthandles.end(); ++it)
1109 if (it->second.type == ConnPointUserDefined && it->second.id == cp.id)
1110 {
1111 cc->selected_handle = it->first;
1112 break;
1113 }
1114 cc_select_handle( cc->selected_handle );
1115 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1116 ret = TRUE;
1117 break;
1118 }
1119 }
1120 }
1123 return ret;
1124 }
1127 static gint
1128 connector_handle_key_press(SPConnectorContext *const cc, guint const keyval)
1129 {
1130 gint ret = FALSE;
1131 /* fixme: */
1132 if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE )
1133 {
1134 switch (keyval) {
1135 case GDK_Return:
1136 case GDK_KP_Enter:
1137 if (cc->npoints != 0) {
1138 spcc_connector_finish(cc);
1139 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1140 // sp_event_context_snap_window_closed(SP_EVENT_CONTEXT(cc));
1141 ret = TRUE;
1142 }
1143 break;
1144 case GDK_Escape:
1145 if (cc->state == SP_CONNECTOR_CONTEXT_REROUTING) {
1147 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1148 SPDocument *doc = sp_desktop_document(desktop);
1150 cc_connector_rerouting_finish(cc, NULL);
1152 sp_document_undo(doc);
1154 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1155 // sp_event_context_snap_window_closed(SP_EVENT_CONTEXT(cc));
1156 desktop->messageStack()->flash( Inkscape::NORMAL_MESSAGE,
1157 _("Connector endpoint drag cancelled."));
1158 ret = TRUE;
1159 }
1160 else if (cc->npoints != 0) {
1161 // if drawing, cancel, otherwise pass it up for deselecting
1162 cc->state = SP_CONNECTOR_CONTEXT_STOP;
1163 // sp_event_context_snap_window_closed(SP_EVENT_CONTEXT(cc));
1164 spcc_reset_colors(cc);
1165 ret = TRUE;
1166 }
1167 break;
1168 default:
1169 break;
1170 }
1171 }
1172 else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE )
1173 {
1174 switch ( cc->state )
1175 {
1176 case SP_CONNECTOR_CONTEXT_DRAGGING:
1177 if ( keyval == GDK_Escape )
1178 {
1179 // Cancel connection point dragging
1181 // Obtain original position
1182 ConnectionPoint const& cp = cc->connpthandles[cc->selected_handle];
1183 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1184 const Geom::Matrix& i2doc = sp_item_i2doc_affine(cc->active_shape);
1185 sp_knot_set_position(cc->selected_handle, cp.pos * i2doc * desktop->doc2dt(), 0);
1186 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1187 desktop->messageStack()->flash( Inkscape::NORMAL_MESSAGE,
1188 _("Connection point drag cancelled."));
1189 ret = TRUE;
1190 }
1191 else if ( keyval == GDK_Return || keyval == GDK_KP_Enter )
1192 {
1193 // Put connection point at current position
1195 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1196 SnapManager &m = desktop->namedview->snap_manager;
1197 m.setup(desktop);
1198 Geom::Point p = cc->selected_handle->pos;
1199 // SPEventContext* event_context = SP_EVENT_CONTEXT( cc );
1201 if (!cc->within_tolerance)
1202 {
1203 // sp_event_context_snap_window_open(event_context);
1204 m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, p, Inkscape::SNAPSOURCE_HANDLE);
1205 sp_knot_set_position(cc->selected_handle, p, 0);
1206 // sp_event_context_snap_window_closed(event_context);
1207 ConnectionPoint& cp = cc->connpthandles[cc->selected_handle];
1208 cp.pos = p * sp_item_dt2i_affine(cc->active_shape);
1209 cc->active_shape->avoidRef->updateConnectionPoint(cp);
1210 }
1212 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1213 ret = TRUE;
1214 }
1215 break;
1216 case SP_CONNECTOR_CONTEXT_NEWCONNPOINT:
1217 if ( keyval == GDK_Escape )
1218 {
1219 // Just destroy the knot
1220 g_object_unref( cc->selected_handle );
1221 cc->selected_handle = NULL;
1222 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1223 ret = TRUE;
1224 }
1225 else if ( keyval == GDK_Return || keyval == GDK_KP_Enter )
1226 {
1227 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1228 SPDocument *doc = sp_desktop_document(desktop);
1229 SnapManager &m = desktop->namedview->snap_manager;
1230 m.setup(desktop);
1231 Geom::Point p = cc->selected_handle->pos;
1232 // SPEventContext* event_context = SP_EVENT_CONTEXT( cc );
1234 // sp_event_context_snap_window_open( event_context );
1235 m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, p, Inkscape::SNAPSOURCE_HANDLE);
1237 sp_knot_set_position(cc->selected_handle, p, 0);
1238 // sp_event_context_snap_window_closed(event_context);
1240 ConnectionPoint cp;
1241 cp.type = ConnPointUserDefined;
1242 cp.pos = p * sp_item_dt2i_affine(cc->active_shape);
1243 cp.dir = Avoid::ConnDirAll;
1244 g_object_unref(cc->selected_handle);
1245 cc->active_shape->avoidRef->addConnectionPoint(cp);
1246 sp_document_ensure_up_to_date(doc);
1247 for (ConnectionPointMap::iterator it = cc->connpthandles.begin(); it != cc->connpthandles.end(); ++it)
1248 if (it->second.type == ConnPointUserDefined && it->second.id == cp.id)
1249 {
1250 cc->selected_handle = it->first;
1251 break;
1252 }
1253 cc_select_handle( cc->selected_handle );
1254 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1255 ret = TRUE;
1256 }
1258 break;
1259 case SP_CONNECTOR_CONTEXT_IDLE:
1260 if ( keyval == GDK_Delete && cc->selected_handle )
1261 {
1262 cc->active_shape->avoidRef->deleteConnectionPoint(cc->connpthandles[cc->selected_handle]);
1263 cc->selected_handle = NULL;
1264 ret = TRUE;
1265 }
1267 break;
1268 }
1269 }
1271 return ret;
1272 }
1275 static void
1276 cc_connector_rerouting_finish(SPConnectorContext *const cc, Geom::Point *const p)
1277 {
1278 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1279 SPDocument *doc = sp_desktop_document(desktop);
1281 // Clear the temporary path:
1282 cc->red_curve->reset();
1283 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL);
1285 if (p != NULL)
1286 {
1287 // Test whether we clicked on a connection point
1288 gchar *shape_label = conn_pt_handle_test(cc, *p);
1290 if (shape_label) {
1291 if (cc->clickedhandle == cc->endpt_handle[0]) {
1292 sp_object_setAttribute(cc->clickeditem,
1293 "inkscape:connection-start",shape_label, false);
1294 }
1295 else {
1296 sp_object_setAttribute(cc->clickeditem,
1297 "inkscape:connection-end",shape_label, false);
1298 }
1299 g_free(shape_label);
1300 }
1301 }
1302 cc->clickeditem->setHidden(false);
1303 sp_conn_reroute_path_immediate(SP_PATH(cc->clickeditem));
1304 cc->clickeditem->updateRepr();
1305 sp_document_done(doc, SP_VERB_CONTEXT_CONNECTOR,
1306 _("Reroute connector"));
1307 cc_set_active_conn(cc, cc->clickeditem);
1308 }
1311 static void
1312 spcc_reset_colors(SPConnectorContext *cc)
1313 {
1314 /* Red */
1315 cc->red_curve->reset();
1316 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL);
1318 cc->green_curve->reset();
1319 cc->npoints = 0;
1320 }
1323 static void
1324 spcc_connector_set_initial_point(SPConnectorContext *const cc, Geom::Point const p)
1325 {
1326 g_assert( cc->npoints == 0 );
1328 cc->p[0] = p;
1329 cc->p[1] = p;
1330 cc->npoints = 2;
1331 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL);
1332 }
1335 static void
1336 spcc_connector_set_subsequent_point(SPConnectorContext *const cc, Geom::Point const p)
1337 {
1338 g_assert( cc->npoints != 0 );
1340 SPDesktop *dt = cc->desktop;
1341 Geom::Point o = dt->dt2doc(cc->p[0]);
1342 Geom::Point d = dt->dt2doc(p);
1343 Avoid::Point src(o[Geom::X], o[Geom::Y]);
1344 Avoid::Point dst(d[Geom::X], d[Geom::Y]);
1346 if (!cc->newConnRef) {
1347 Avoid::Router *router = sp_desktop_document(dt)->router;
1348 cc->newConnRef = new Avoid::ConnRef(router);
1349 cc->newConnRef->setEndpoint(Avoid::VertID::src, src);
1350 if (cc->isOrthogonal)
1351 cc->newConnRef->setRoutingType(Avoid::ConnType_Orthogonal);
1352 else
1353 cc->newConnRef->setRoutingType(Avoid::ConnType_PolyLine);
1354 }
1355 // Set new endpoint.
1356 cc->newConnRef->setEndpoint(Avoid::VertID::tar, dst);
1357 // Immediately generate new routes for connector.
1358 cc->newConnRef->makePathInvalid();
1359 cc->newConnRef->router()->processTransaction();
1360 // Recreate curve from libavoid route.
1361 recreateCurve( cc->red_curve, cc->newConnRef, cc->curvature );
1362 cc->red_curve->transform(dt->doc2dt());
1363 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), cc->red_curve);
1364 }
1367 /**
1368 * Concats red, blue and green.
1369 * If any anchors are defined, process these, optionally removing curves from white list
1370 * Invoke _flush_white to write result back to object.
1371 */
1372 static void
1373 spcc_concat_colors_and_flush(SPConnectorContext *cc)
1374 {
1375 SPCurve *c = cc->green_curve;
1376 cc->green_curve = new SPCurve();
1378 cc->red_curve->reset();
1379 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL);
1381 if (c->is_empty()) {
1382 c->unref();
1383 return;
1384 }
1386 spcc_flush_white(cc, c);
1388 c->unref();
1389 }
1392 /*
1393 * Flushes white curve(s) and additional curve into object
1394 *
1395 * No cleaning of colored curves - this has to be done by caller
1396 * No rereading of white data, so if you cannot rely on ::modified, do it in caller
1397 *
1398 */
1400 static void
1401 spcc_flush_white(SPConnectorContext *cc, SPCurve *gc)
1402 {
1403 SPCurve *c;
1405 if (gc) {
1406 c = gc;
1407 c->ref();
1408 } else {
1409 return;
1410 }
1412 /* Now we have to go back to item coordinates at last */
1413 c->transform(SP_EVENT_CONTEXT_DESKTOP(cc)->dt2doc());
1415 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1416 SPDocument *doc = sp_desktop_document(desktop);
1417 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
1419 if ( c && !c->is_empty() ) {
1420 /* We actually have something to write */
1422 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1423 /* Set style */
1424 sp_desktop_apply_style_tool(desktop, repr, "/tools/connector", false);
1426 gchar *str = sp_svg_write_path( c->get_pathvector() );
1427 g_assert( str != NULL );
1428 repr->setAttribute("d", str);
1429 g_free(str);
1431 /* Attach repr */
1432 cc->newconn = SP_ITEM(desktop->currentLayer()->appendChildRepr(repr));
1433 cc->newconn->transform = sp_item_i2doc_affine(SP_ITEM(desktop->currentLayer())).inverse();
1435 bool connection = false;
1436 sp_object_setAttribute(cc->newconn, "inkscape:connector-type",
1437 cc->isOrthogonal ? "orthogonal" : "polyline", false);
1438 sp_object_setAttribute(cc->newconn, "inkscape:connector-curvature",
1439 Glib::Ascii::dtostr(cc->curvature).c_str(), false);
1440 if (cc->sid)
1441 {
1442 sp_object_setAttribute(cc->newconn, "inkscape:connection-start",
1443 cc->sid, false);
1444 connection = true;
1445 }
1447 if (cc->eid)
1448 {
1449 sp_object_setAttribute(cc->newconn, "inkscape:connection-end",
1450 cc->eid, false);
1451 connection = true;
1452 }
1453 // Process pending updates.
1454 cc->newconn->updateRepr();
1455 sp_document_ensure_up_to_date(doc);
1457 if (connection) {
1458 // Adjust endpoints to shape edge.
1459 sp_conn_reroute_path_immediate(SP_PATH(cc->newconn));
1460 cc->newconn->updateRepr();
1461 }
1463 // Only set the selection after we are finished with creating the attributes of
1464 // the connector. Otherwise, the selection change may alter the defaults for
1465 // values like curvature in the connector context, preventing subsequent lookup
1466 // of their original values.
1467 cc->selection->set(repr);
1468 Inkscape::GC::release(repr);
1469 }
1471 c->unref();
1473 sp_document_done(doc, SP_VERB_CONTEXT_CONNECTOR, _("Create connector"));
1474 }
1477 static void
1478 spcc_connector_finish_segment(SPConnectorContext *const cc, Geom::Point const /*p*/)
1479 {
1480 if (!cc->red_curve->is_empty()) {
1481 cc->green_curve->append_continuous(cc->red_curve, 0.0625);
1483 cc->p[0] = cc->p[3];
1484 cc->p[1] = cc->p[4];
1485 cc->npoints = 2;
1487 cc->red_curve->reset();
1488 }
1489 }
1492 static void
1493 spcc_connector_finish(SPConnectorContext *const cc)
1494 {
1495 SPDesktop *const desktop = cc->desktop;
1496 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Finishing connector"));
1498 cc->red_curve->reset();
1499 spcc_concat_colors_and_flush(cc);
1501 cc->npoints = 0;
1503 if (cc->newConnRef) {
1504 cc->newConnRef->removeFromGraph();
1505 delete cc->newConnRef;
1506 cc->newConnRef = NULL;
1507 }
1508 }
1511 static gboolean
1512 cc_generic_knot_handler(SPCanvasItem *, GdkEvent *event, SPKnot *knot)
1513 {
1514 g_assert (knot != NULL);
1516 g_object_ref(knot);
1518 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(
1519 knot->desktop->event_context);
1521 gboolean consumed = FALSE;
1523 gchar* knot_tip = knot->tip ? knot->tip : cc->knot_tip;
1524 switch (event->type) {
1525 case GDK_ENTER_NOTIFY:
1526 sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, TRUE);
1528 cc->active_handle = knot;
1529 if (knot_tip)
1530 {
1531 knot->desktop->event_context->defaultMessageContext()->set(
1532 Inkscape::NORMAL_MESSAGE, knot_tip);
1533 }
1535 consumed = TRUE;
1536 break;
1537 case GDK_LEAVE_NOTIFY:
1538 sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, FALSE);
1540 cc->active_handle = NULL;
1542 if (knot_tip) {
1543 knot->desktop->event_context->defaultMessageContext()->clear();
1544 }
1546 consumed = TRUE;
1547 break;
1548 default:
1549 break;
1550 }
1552 g_object_unref(knot);
1554 return consumed;
1555 }
1558 static gboolean
1559 endpt_handler(SPKnot */*knot*/, GdkEvent *event, SPConnectorContext *cc)
1560 {
1561 g_assert( SP_IS_CONNECTOR_CONTEXT(cc) );
1563 gboolean consumed = FALSE;
1565 switch (event->type) {
1566 case GDK_BUTTON_PRESS:
1567 g_assert( (cc->active_handle == cc->endpt_handle[0]) ||
1568 (cc->active_handle == cc->endpt_handle[1]) );
1569 if (cc->state == SP_CONNECTOR_CONTEXT_IDLE) {
1570 cc->clickeditem = cc->active_conn;
1571 cc->clickedhandle = cc->active_handle;
1572 cc_clear_active_conn(cc);
1573 cc->state = SP_CONNECTOR_CONTEXT_REROUTING;
1574 // sp_event_context_snap_window_open(SP_EVENT_CONTEXT(cc));
1576 // Disconnect from attached shape
1577 unsigned ind = (cc->active_handle == cc->endpt_handle[0]) ? 0 : 1;
1578 sp_conn_end_detach(cc->clickeditem, ind);
1580 Geom::Point origin;
1581 if (cc->clickedhandle == cc->endpt_handle[0]) {
1582 origin = cc->endpt_handle[1]->pos;
1583 }
1584 else {
1585 origin = cc->endpt_handle[0]->pos;
1586 }
1588 // Show the red path for dragging.
1589 cc->red_curve = SP_PATH(cc->clickeditem)->original_curve ? SP_PATH(cc->clickeditem)->original_curve->copy() : SP_PATH(cc->clickeditem)->curve->copy();
1590 Geom::Matrix i2d = sp_item_i2d_affine(cc->clickeditem);
1591 cc->red_curve->transform(i2d);
1592 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), cc->red_curve);
1594 cc->clickeditem->setHidden(true);
1596 // The rest of the interaction rerouting the connector is
1597 // handled by the context root handler.
1598 consumed = TRUE;
1599 }
1600 break;
1601 default:
1602 break;
1603 }
1605 return consumed;
1606 }
1608 static void cc_active_shape_add_knot(SPDesktop* desktop, SPItem* item, ConnectionPointMap &cphandles, ConnectionPoint& cp)
1609 {
1610 SPKnot *knot = sp_knot_new(desktop, 0);
1612 knot->setShape(SP_KNOT_SHAPE_SQUARE);
1613 knot->setSize(8);
1614 knot->setAnchor(GTK_ANCHOR_CENTER);
1615 knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff);
1616 sp_knot_update_ctrl(knot);
1618 // We don't want to use the standard knot handler.
1619 g_signal_handler_disconnect(G_OBJECT(knot->item),
1620 knot->_event_handler_id);
1621 knot->_event_handler_id = 0;
1623 gtk_signal_connect(GTK_OBJECT(knot->item), "event",
1624 GTK_SIGNAL_FUNC(cc_generic_knot_handler), knot);
1625 sp_knot_set_position(knot, item->avoidRef->getConnectionPointPos(cp.type, cp.id) * desktop->doc2dt(), 0);
1626 sp_knot_show(knot);
1627 cphandles[knot] = cp;
1628 }
1630 static void cc_set_active_shape(SPConnectorContext *cc, SPItem *item)
1631 {
1632 g_assert(item != NULL );
1634 std::map<int, ConnectionPoint>* connpts = &item->avoidRef->connection_points;
1636 if (cc->active_shape != item)
1637 {
1638 // The active shape has changed
1639 // Rebuild everything
1640 cc->active_shape = item;
1641 // Remove existing active shape listeners
1642 if (cc->active_shape_repr) {
1643 sp_repr_remove_listener_by_data(cc->active_shape_repr, cc);
1644 Inkscape::GC::release(cc->active_shape_repr);
1646 sp_repr_remove_listener_by_data(cc->active_shape_layer_repr, cc);
1647 Inkscape::GC::release(cc->active_shape_layer_repr);
1648 }
1650 // Listen in case the active shape changes
1651 cc->active_shape_repr = SP_OBJECT_REPR(item);
1652 if (cc->active_shape_repr) {
1653 Inkscape::GC::anchor(cc->active_shape_repr);
1654 sp_repr_add_listener(cc->active_shape_repr, &shape_repr_events, cc);
1656 cc->active_shape_layer_repr = cc->active_shape_repr->parent();
1657 Inkscape::GC::anchor(cc->active_shape_layer_repr);
1658 sp_repr_add_listener(cc->active_shape_layer_repr, &layer_repr_events, cc);
1659 }
1662 // Set the connection points.
1663 if ( cc->connpthandles.size() )
1664 // destroy the old list
1665 while (! cc->connpthandles.empty() )
1666 {
1667 g_object_unref(cc->connpthandles.begin()->first);
1668 cc->connpthandles.erase(cc->connpthandles.begin());
1669 }
1670 // build the new one
1671 if ( connpts->size() )
1672 for (std::map<int, ConnectionPoint>::iterator it = connpts->begin(); it != connpts->end(); ++it)
1673 cc_active_shape_add_knot(cc->desktop, item, cc->connpthandles, it->second);
1675 // Also add default connection points
1676 // For now, only centre default connection point will
1677 // be available
1678 ConnectionPoint centre;
1679 centre.type = ConnPointDefault;
1680 centre.id = ConnPointPosCC;
1681 cc_active_shape_add_knot(cc->desktop, item, cc->connpthandles, centre);
1682 }
1683 else
1684 {
1685 // The active shape didn't change
1686 // Update only the connection point knots
1688 // Ensure the item's connection_points map
1689 // has been updated
1690 sp_document_ensure_up_to_date(SP_OBJECT_DOCUMENT(item));
1692 std::set<int> seen;
1693 for ( ConnectionPointMap::iterator it = cc->connpthandles.begin(); it != cc->connpthandles.end() ;)
1694 {
1695 bool removed = false;
1696 if ( it->second.type == ConnPointUserDefined )
1697 {
1698 std::map<int, ConnectionPoint>::iterator p = connpts->find(it->second.id);
1699 if (p != connpts->end())
1700 {
1701 if ( it->second != p->second )
1702 // Connection point position has changed
1703 // Update knot position
1704 sp_knot_set_position(it->first,
1705 item->avoidRef->getConnectionPointPos(it->second.type, it->second.id) * cc->desktop->doc2dt(), 0);
1706 seen.insert(it->second.id);
1707 sp_knot_show(it->first);
1708 }
1709 else
1710 {
1711 // This connection point does no longer exist,
1712 // remove the knot
1713 ConnectionPointMap::iterator curr = it;
1714 ++it;
1715 g_object_unref( curr->first );
1716 cc->connpthandles.erase(curr);
1717 removed = true;
1718 }
1719 }
1720 else
1721 {
1722 // It's a default connection point
1723 // Just make sure it's position is correct
1724 sp_knot_set_position(it->first,
1725 item->avoidRef->getConnectionPointPos(it->second.type, it->second.id) * cc->desktop->doc2dt(), 0);
1726 sp_knot_show(it->first);
1728 }
1729 if ( !removed )
1730 ++it;
1731 }
1732 // Add knots for new connection points.
1733 if (connpts->size())
1734 for ( std::map<int, ConnectionPoint>::iterator it = connpts->begin(); it != connpts->end(); ++it )
1735 if ( seen.find(it->first) == seen.end() )
1736 // A new connection point has been added
1737 // to the shape. Add a knot for it.
1738 cc_active_shape_add_knot(cc->desktop, item, cc->connpthandles, it->second);
1739 }
1740 }
1743 static void
1744 cc_set_active_conn(SPConnectorContext *cc, SPItem *item)
1745 {
1746 g_assert( SP_IS_PATH(item) );
1748 SPCurve *curve = SP_PATH(item)->original_curve ? SP_PATH(item)->original_curve : SP_PATH(item)->curve;
1749 Geom::Matrix i2d = sp_item_i2d_affine(item);
1751 if (cc->active_conn == item)
1752 {
1753 // Just adjust handle positions.
1754 Geom::Point startpt = *(curve->first_point()) * i2d;
1755 sp_knot_set_position(cc->endpt_handle[0], startpt, 0);
1757 Geom::Point endpt = *(curve->last_point()) * i2d;
1758 sp_knot_set_position(cc->endpt_handle[1], endpt, 0);
1760 return;
1761 }
1763 cc->active_conn = item;
1765 // Remove existing active conn listeners
1766 if (cc->active_conn_repr) {
1767 sp_repr_remove_listener_by_data(cc->active_conn_repr, cc);
1768 Inkscape::GC::release(cc->active_conn_repr);
1769 cc->active_conn_repr = NULL;
1770 }
1772 // Listen in case the active conn changes
1773 cc->active_conn_repr = SP_OBJECT_REPR(item);
1774 if (cc->active_conn_repr) {
1775 Inkscape::GC::anchor(cc->active_conn_repr);
1776 sp_repr_add_listener(cc->active_conn_repr, &shape_repr_events, cc);
1777 }
1779 for (int i = 0; i < 2; ++i) {
1781 // Create the handle if it doesn't exist
1782 if ( cc->endpt_handle[i] == NULL ) {
1783 SPKnot *knot = sp_knot_new(cc->desktop,
1784 _("<b>Connector endpoint</b>: drag to reroute or connect to new shapes"));
1786 knot->setShape(SP_KNOT_SHAPE_SQUARE);
1787 knot->setSize(7);
1788 knot->setAnchor(GTK_ANCHOR_CENTER);
1789 knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff);
1790 knot->setStroke(0x000000ff, 0x000000ff, 0x000000ff);
1791 sp_knot_update_ctrl(knot);
1793 // We don't want to use the standard knot handler,
1794 // since we don't want this knot to be draggable.
1795 g_signal_handler_disconnect(G_OBJECT(knot->item),
1796 knot->_event_handler_id);
1797 knot->_event_handler_id = 0;
1799 gtk_signal_connect(GTK_OBJECT(knot->item), "event",
1800 GTK_SIGNAL_FUNC(cc_generic_knot_handler), knot);
1802 cc->endpt_handle[i] = knot;
1803 }
1805 // Remove any existing handlers
1806 if (cc->endpt_handler_id[i]) {
1807 g_signal_handlers_disconnect_by_func(
1808 G_OBJECT(cc->endpt_handle[i]->item),
1809 (void*)G_CALLBACK(endpt_handler), (gpointer) cc );
1810 cc->endpt_handler_id[i] = 0;
1811 }
1813 // Setup handlers for connector endpoints, this is
1814 // is as 'after' so that cc_generic_knot_handler is
1815 // triggered first for any endpoint.
1816 cc->endpt_handler_id[i] = g_signal_connect_after(
1817 G_OBJECT(cc->endpt_handle[i]->item), "event",
1818 G_CALLBACK(endpt_handler), cc);
1819 }
1821 Geom::Point startpt = *(curve->first_point()) * i2d;
1822 sp_knot_set_position(cc->endpt_handle[0], startpt, 0);
1824 Geom::Point endpt = *(curve->last_point()) * i2d;
1825 sp_knot_set_position(cc->endpt_handle[1], endpt, 0);
1827 sp_knot_show(cc->endpt_handle[0]);
1828 sp_knot_show(cc->endpt_handle[1]);
1829 }
1831 void cc_create_connection_point(SPConnectorContext* cc)
1832 {
1833 if (cc->active_shape && cc->state == SP_CONNECTOR_CONTEXT_IDLE)
1834 {
1835 if (cc->selected_handle)
1836 {
1837 cc_deselect_handle( cc->selected_handle );
1838 }
1839 SPKnot *knot = sp_knot_new(cc->desktop, 0);
1840 // We do not process events on this knot.
1841 g_signal_handler_disconnect(G_OBJECT(knot->item),
1842 knot->_event_handler_id);
1843 knot->_event_handler_id = 0;
1845 cc_select_handle( knot );
1846 cc->selected_handle = knot;
1847 sp_knot_show(cc->selected_handle);
1848 cc->state = SP_CONNECTOR_CONTEXT_NEWCONNPOINT;
1849 }
1850 }
1852 void cc_remove_connection_point(SPConnectorContext* cc)
1853 {
1854 if (cc->selected_handle && cc->state == SP_CONNECTOR_CONTEXT_IDLE )
1855 {
1856 cc->active_shape->avoidRef->deleteConnectionPoint(cc->connpthandles[cc->selected_handle]);
1857 cc->selected_handle = NULL;
1858 }
1859 }
1861 static bool cc_item_is_shape(SPItem *item)
1862 {
1863 if (SP_IS_PATH(item)) {
1864 SPCurve *curve = (SP_SHAPE(item))->curve;
1865 if ( curve && !(curve->is_closed()) ) {
1866 // Open paths are connectors.
1867 return false;
1868 }
1869 }
1870 else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
1871 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1872 if (prefs->getBool("/tools/connector/ignoretext", true)) {
1873 // Don't count text as a shape we can connect connector to.
1874 return false;
1875 }
1876 }
1877 return true;
1878 }
1881 bool cc_item_is_connector(SPItem *item)
1882 {
1883 if (SP_IS_PATH(item)) {
1884 if (SP_PATH(item)->connEndPair.isAutoRoutingConn()) {
1885 g_assert( SP_PATH(item)->original_curve ? !(SP_PATH(item)->original_curve->is_closed()) : !(SP_PATH(item)->curve->is_closed()) );
1886 return true;
1887 }
1888 }
1889 return false;
1890 }
1893 void cc_selection_set_avoid(bool const set_avoid)
1894 {
1895 SPDesktop *desktop = inkscape_active_desktop();
1896 if (desktop == NULL) {
1897 return;
1898 }
1900 SPDocument *document = sp_desktop_document(desktop);
1902 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1904 GSList *l = (GSList *) selection->itemList();
1906 int changes = 0;
1908 while (l) {
1909 SPItem *item = (SPItem *) l->data;
1911 char const *value = (set_avoid) ? "true" : NULL;
1913 if (cc_item_is_shape(item)) {
1914 sp_object_setAttribute(item, "inkscape:connector-avoid",
1915 value, false);
1916 item->avoidRef->handleSettingChange();
1917 changes++;
1918 }
1920 l = l->next;
1921 }
1923 if (changes == 0) {
1924 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1925 _("Select <b>at least one non-connector object</b>."));
1926 return;
1927 }
1929 char *event_desc = (set_avoid) ?
1930 _("Make connectors avoid selected objects") :
1931 _("Make connectors ignore selected objects");
1932 sp_document_done(document, SP_VERB_CONTEXT_CONNECTOR, event_desc);
1933 }
1936 static void
1937 cc_selection_changed(Inkscape::Selection *selection, gpointer data)
1938 {
1939 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(data);
1940 //SPEventContext *ec = SP_EVENT_CONTEXT(cc);
1942 SPItem *item = selection->singleItem();
1944 if (cc->active_conn == item)
1945 {
1946 // Nothing to change.
1947 return;
1948 }
1949 if (item == NULL)
1950 {
1951 cc_clear_active_conn(cc);
1952 return;
1953 }
1955 if (cc_item_is_connector(item)) {
1956 cc_set_active_conn(cc, item);
1957 }
1958 }
1961 static void
1962 shape_event_attr_deleted(Inkscape::XML::Node */*repr*/, Inkscape::XML::Node *child,
1963 Inkscape::XML::Node */*ref*/, gpointer data)
1964 {
1965 g_assert(data);
1966 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(data);
1968 if (child == cc->active_shape_repr) {
1969 // The active shape has been deleted. Clear active shape.
1970 cc_clear_active_shape(cc);
1971 }
1972 }
1975 static void
1976 shape_event_attr_changed(Inkscape::XML::Node *repr, gchar const *name,
1977 gchar const */*old_value*/, gchar const */*new_value*/,
1978 bool /*is_interactive*/, gpointer data)
1979 {
1980 g_assert(data);
1981 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(data);
1983 // Look for changes that result in onscreen movement.
1984 if (!strcmp(name, "d") || !strcmp(name, "x") || !strcmp(name, "y") ||
1985 !strcmp(name, "width") || !strcmp(name, "height") ||
1986 !strcmp(name, "transform"))
1987 {
1988 if (repr == cc->active_shape_repr) {
1989 // Active shape has moved. Clear active shape.
1990 cc_clear_active_shape(cc);
1991 }
1992 else if (repr == cc->active_conn_repr) {
1993 // The active conn has been moved.
1994 // Set it again, which just sets new handle positions.
1995 cc_set_active_conn(cc, cc->active_conn);
1996 }
1997 }
1998 else
1999 if ( !strcmp(name, "inkscape:connection-points") )
2000 if (repr == cc->active_shape_repr)
2001 // The connection points of the active shape
2002 // have changed. Update them.
2003 cc_set_active_shape(cc, cc->active_shape);
2004 }
2007 /*
2008 Local Variables:
2009 mode:c++
2010 c-file-style:"stroustrup"
2011 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
2012 indent-tabs-mode:nil
2013 fill-column:99
2014 End:
2015 */
2016 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :