1 /**
2 * Connector creation tool
3 *
4 * Authors:
5 * Michael Wybrow <mjwybrow@users.sourceforge.net>
6 * Abhishek Sharma
7 * Jon A. Cruz <jon@joncruz.org>
8 *
9 * Copyright (C) 2005-2008 Michael Wybrow
10 * Copyright (C) 2009 Monash University
11 * Copyright (C) 2010 authors
12 *
13 * Released under GNU GPL, read the file 'COPYING' for more information
14 *
15 * TODO:
16 * o Show a visual indicator for objects with the 'avoid' property set.
17 * o Allow user to change a object between a path and connector through
18 * the interface.
19 * o Create an interface for setting markers (arrow heads).
20 * o Better distinguish between paths and connectors to prevent problems
21 * in the node tool and paths accidentally being turned into connectors
22 * in the connector tool. Perhaps have a way to convert between.
23 * o Only call libavoid's updateEndPoint as required. Currently we do it
24 * for both endpoints, even if only one is moving.
25 * o Allow user-placeable connection points.
26 * o Deal sanely with connectors with both endpoints attached to the
27 * same connection point, and drawing of connectors attaching
28 * overlapping shapes (currently tries to adjust connector to be
29 * outside both bounding boxes).
30 * o Fix many special cases related to connectors updating,
31 * e.g., copying a couple of shapes and a connector that are
32 * attached to each other.
33 * e.g., detach connector when it is moved or transformed in
34 * one of the other contexts.
35 * o Cope with shapes whose ids change when they have attached
36 * connectors.
37 * o During dragging motion, gobble up to and use the final motion event.
38 * Gobbling away all duplicates after the current can occasionally result
39 * in the path lagging behind the mouse cursor if it is no longer being
40 * dragged.
41 * o Fix up libavoid's representation after undo actions. It doesn't see
42 * any transform signals and hence doesn't know shapes have moved back to
43 * there earlier positions.
44 * o Decide whether drawing/editing mode should be an Inkscape preference
45 * or the connector tool should always start in drawing mode.
46 * o Correct the problem with switching to the select tool when pressing
47 * space bar (there are moments when it refuses to do so).
48 *
49 * ----------------------------------------------------------------------------
50 *
51 * mjwybrow's observations on acracan's Summer of Code connector work:
52 *
53 * - GUI comments:
54 *
55 * - Buttons for adding and removing user-specified connection
56 * points should probably have "+" and "-" symbols on them so they
57 * are consistent with the similar buttons for the node tool.
58 * - Controls on the connector tool be should be reordered logically,
59 * possibly as follows:
60 *
61 * *Connector*: [Polyline-radio-button] [Orthgonal-radio-button]
62 * [Curvature-control] | *Shape*: [Avoid-button] [Dont-avoid-button]
63 * [Spacing-control] | *Connection pts*: [Edit-mode] [Add-pt] [Rm-pt]
64 *
65 * I think that the network layout controls be moved to the
66 * Align and Distribute dialog (there is already the layout button
67 * there, but no options are exposed).
68 *
69 * I think that the style change between polyline and orthogonal
70 * would be much clearer with two buttons (radio behaviour -- just
71 * one is true).
72 *
73 * The other tools show a label change from "New:" to "Change:"
74 * depending on whether an object is selected. We could consider
75 * this but there may not be space.
76 *
77 * The Add-pt and Rm-pt buttons should be greyed out (inactive) if
78 * we are not in connection point editing mode. And probably also
79 * if there is no shape selected, i.e. at the times they have no
80 * effect when clicked.
81 *
82 * Likewise for the avoid/ignore shapes buttons. These should be
83 * inactive when a shape is not selected in the connector context.
84 *
85 * - When creating/editing connection points:
86 *
87 * - Strange things can happen if you have connectors selected, or
88 * try rerouting connectors by dragging their endpoints when in
89 * connection point editing mode.
90 *
91 * - Possibly the selected shape's connection points should always
92 * be shown (i.e., have knots) when in editing mode.
93 *
94 * - It is a little strange to be able to place connection points
95 * competely outside shapes. Especially when you later can't draw
96 * connectors to them since the knots are only visible when you
97 * are over the shape. I think that you should only be able to
98 * place connection points inside or on the boundary of the shape
99 * itself.
100 *
101 * - The intended ability to place a new point at the current cursor
102 * position by pressing RETURN does not seem to work.
103 *
104 * - The Status bar tooltip should change to reflect editing mode
105 * and tell the user about RETURN and how to use the tool.
106 *
107 * - Connection points general:
108 *
109 * - Connection points that were inside the shape can end up outside
110 * after a rotation is applied to the shape in the select tool.
111 * It doesn't seem like the correct transform is being applied to
112 * these, or it is being applied at the wrong time. I'd expect
113 * connection points to rotate with the shape, and stay at the
114 * same position "on the shape"
115 *
116 * - I was able to make the connectors attached to a shape fall off
117 * the shape after scaling it. Not sure the exact cause, but may
118 * require more investigation/debugging.
119 *
120 * - The user-defined connection points should be either absolute
121 * (as the current ones are) or defined as a percentage of the
122 * shape. These would be based on a toggle setting on the
123 * toolbar, and they would be placed in exactly the same way by
124 * the user. The only difference would be that they would be
125 * store as percentage positions in the SVG connection-points
126 * property and that they would update/move automatically if the
127 * object was resized or scaled.
128 *
129 * - Thinking more, I think you always want to store and think about
130 * the positions of connection points to be pre-transform, but
131 * obviously the shape transform is applied to them. That way,
132 * they will rotate and scale automatically with the shape, when
133 * the shape transform is altered. The Percentage version would
134 * compute their position from the pre-transform dimensions and
135 * then have the transform applied to them, for example.
136 *
137 * - The connection points in the test_connection_points.svg file
138 * seem to follow the shape when it is moved, but connection
139 * points I add to new shapes, do not follow the shape, either
140 * when the shape is just moved or transformed. There is
141 * something wrong here. What exactly should the behaviour be
142 * currently?
143 *
144 * - I see that connection points are specified at absolute canvas
145 * positions. I really think that they should be specified in
146 * shape coordinated relative to the shapes. There may be
147 * transforms applied to layers and the canvas which would make
148 * specifying them quite difficult. I'd expect a position of 0, 0
149 * to be on the shape in question or very close to it, for example.
150 *
151 */
155 #include <gdk/gdkkeysyms.h>
156 #include <string>
157 #include <cstring>
159 #include "connector-context.h"
160 #include "pixmaps/cursor-connector.xpm"
161 #include "pixmaps/cursor-node.xpm"
162 //#include "pixmaps/cursor-node-m.xpm"
163 //#include "pixmaps/cursor-node-d.xpm"
164 #include "xml/node-event-vector.h"
165 #include "xml/repr.h"
166 #include "svg/svg.h"
167 #include "desktop.h"
168 #include "desktop-style.h"
169 #include "desktop-handles.h"
170 #include "document.h"
171 #include "message-context.h"
172 #include "message-stack.h"
173 #include "selection.h"
174 #include "inkscape.h"
175 #include "preferences.h"
176 #include "sp-path.h"
177 #include "display/sp-canvas.h"
178 #include "display/canvas-bpath.h"
179 #include "display/sodipodi-ctrl.h"
180 #include <glibmm/i18n.h>
181 #include <glibmm/stringutils.h>
182 #include "snap.h"
183 #include "knot.h"
184 #include "sp-conn-end.h"
185 #include "sp-conn-end-pair.h"
186 #include "conn-avoid-ref.h"
187 #include "libavoid/vertices.h"
188 #include "libavoid/router.h"
189 #include "context-fns.h"
190 #include "sp-namedview.h"
191 #include "sp-text.h"
192 #include "sp-flowtext.h"
193 #include "display/curve.h"
195 using Inkscape::DocumentUndo;
197 static void sp_connector_context_class_init(SPConnectorContextClass *klass);
198 static void sp_connector_context_init(SPConnectorContext *conn_context);
199 static void sp_connector_context_dispose(GObject *object);
201 static void sp_connector_context_setup(SPEventContext *ec);
202 static void sp_connector_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val);
203 static void sp_connector_context_finish(SPEventContext *ec);
204 static gint sp_connector_context_root_handler(SPEventContext *ec, GdkEvent *event);
205 static gint sp_connector_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);
207 // Stuff borrowed from DrawContext
208 static void spcc_connector_set_initial_point(SPConnectorContext *cc, Geom::Point const p);
209 static void spcc_connector_set_subsequent_point(SPConnectorContext *cc, Geom::Point const p);
210 static void spcc_connector_finish_segment(SPConnectorContext *cc, Geom::Point p);
211 static void spcc_reset_colors(SPConnectorContext *cc);
212 static void spcc_connector_finish(SPConnectorContext *cc);
213 static void spcc_concat_colors_and_flush(SPConnectorContext *cc);
214 static void spcc_flush_white(SPConnectorContext *cc, SPCurve *gc);
216 // Context event handlers
217 static gint connector_handle_button_press(SPConnectorContext *const cc, GdkEventButton const &bevent);
218 static gint connector_handle_motion_notify(SPConnectorContext *const cc, GdkEventMotion const &mevent);
219 static gint connector_handle_button_release(SPConnectorContext *const cc, GdkEventButton const &revent);
220 static gint connector_handle_key_press(SPConnectorContext *const cc, guint const keyval);
222 static void cc_active_shape_add_knot(SPDesktop* desktop, SPItem* item, ConnectionPointMap &cphandles, ConnectionPoint& cp);
223 static void cc_set_active_shape(SPConnectorContext *cc, SPItem *item);
224 static void cc_clear_active_shape(SPConnectorContext *cc);
225 static void cc_set_active_conn(SPConnectorContext *cc, SPItem *item);
226 static void cc_clear_active_conn(SPConnectorContext *cc);
227 static bool conn_pt_handle_test(SPConnectorContext *cc, Geom::Point& p, gchar **href, gchar **cpid);
228 static void cc_select_handle(SPKnot* knot);
229 static void cc_deselect_handle(SPKnot* knot);
230 static bool cc_item_is_shape(SPItem *item);
231 static void cc_selection_changed(Inkscape::Selection *selection, gpointer data);
232 static void cc_connector_rerouting_finish(SPConnectorContext *const cc,
233 Geom::Point *const p);
235 static void shape_event_attr_deleted(Inkscape::XML::Node *repr,
236 Inkscape::XML::Node *child, Inkscape::XML::Node *ref, gpointer data);
237 static void shape_event_attr_changed(Inkscape::XML::Node *repr, gchar const *name,
238 gchar const *old_value, gchar const *new_value, bool is_interactive,
239 gpointer data);
242 static char* cc_knot_tips[] = { _("<b>Connection point</b>: click or drag to create a new connector"),
243 _("<b>Connection point</b>: click to select, drag to move") };
245 /*static Geom::Point connector_drag_origin_w(0, 0);
246 static bool connector_within_tolerance = false;*/
247 static SPEventContextClass *parent_class;
250 static Inkscape::XML::NodeEventVector shape_repr_events = {
251 NULL, /* child_added */
252 NULL, /* child_added */
253 shape_event_attr_changed,
254 NULL, /* content_changed */
255 NULL /* order_changed */
256 };
258 static Inkscape::XML::NodeEventVector layer_repr_events = {
259 NULL, /* child_added */
260 shape_event_attr_deleted,
261 NULL, /* child_added */
262 NULL, /* content_changed */
263 NULL /* order_changed */
264 };
267 GType
268 sp_connector_context_get_type(void)
269 {
270 static GType type = 0;
271 if (!type) {
272 GTypeInfo info = {
273 sizeof(SPConnectorContextClass),
274 NULL, NULL,
275 (GClassInitFunc) sp_connector_context_class_init,
276 NULL, NULL,
277 sizeof(SPConnectorContext),
278 4,
279 (GInstanceInitFunc) sp_connector_context_init,
280 NULL, /* value_table */
281 };
282 type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPConnectorContext", &info, (GTypeFlags)0);
283 }
284 return type;
285 }
287 static void
288 sp_connector_context_class_init(SPConnectorContextClass *klass)
289 {
290 GObjectClass *object_class;
291 SPEventContextClass *event_context_class;
293 object_class = (GObjectClass *) klass;
294 event_context_class = (SPEventContextClass *) klass;
296 parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);
298 object_class->dispose = sp_connector_context_dispose;
300 event_context_class->setup = sp_connector_context_setup;
301 event_context_class->set = sp_connector_context_set;
302 event_context_class->finish = sp_connector_context_finish;
303 event_context_class->root_handler = sp_connector_context_root_handler;
304 event_context_class->item_handler = sp_connector_context_item_handler;
305 }
308 static void
309 sp_connector_context_init(SPConnectorContext *cc)
310 {
311 SPEventContext *ec = SP_EVENT_CONTEXT(cc);
313 ec->cursor_shape = cursor_connector_xpm;
314 ec->hot_x = 1;
315 ec->hot_y = 1;
316 ec->xp = 0;
317 ec->yp = 0;
319 cc->mode = SP_CONNECTOR_CONTEXT_DRAWING_MODE;
320 cc->knot_tip = 0;
322 cc->red_color = 0xff00007f;
324 cc->newconn = NULL;
325 cc->newConnRef = NULL;
326 cc->curvature = 0.0;
328 cc->sel_changed_connection = sigc::connection();
330 cc->active_shape = NULL;
331 cc->active_shape_repr = NULL;
332 cc->active_shape_layer_repr = NULL;
334 cc->active_conn = NULL;
335 cc->active_conn_repr = NULL;
337 cc->active_handle = NULL;
339 cc->selected_handle = NULL;
341 cc->clickeditem = NULL;
342 cc->clickedhandle = NULL;
344 new (&cc->connpthandles) ConnectionPointMap();
346 for (int i = 0; i < 2; ++i) {
347 cc->endpt_handle[i] = NULL;
348 cc->endpt_handler_id[i] = 0;
349 }
350 cc->shref = NULL;
351 cc->scpid = NULL;
352 cc->ehref = NULL;
353 cc->ecpid = NULL;
354 cc->npoints = 0;
355 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
356 }
359 static void
360 sp_connector_context_dispose(GObject *object)
361 {
362 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(object);
364 cc->sel_changed_connection.disconnect();
366 if (!cc->connpthandles.empty()) {
367 for (ConnectionPointMap::iterator it = cc->connpthandles.begin();
368 it != cc->connpthandles.end(); ++it) {
369 g_object_unref(it->first);
370 }
371 cc->connpthandles.clear();
372 }
373 cc->connpthandles.~ConnectionPointMap();
374 for (int i = 0; i < 2; ++i) {
375 if (cc->endpt_handle[1]) {
376 g_object_unref(cc->endpt_handle[i]);
377 cc->endpt_handle[i] = NULL;
378 }
379 }
380 if (cc->shref) {
381 g_free(cc->shref);
382 cc->shref = NULL;
383 }
384 if (cc->scpid) {
385 g_free(cc->scpid);
386 cc->scpid = NULL;
387 }
388 if (cc->ehref) {
389 g_free(cc->shref);
390 cc->shref = NULL;
391 }
392 if (cc->ecpid) {
393 g_free(cc->scpid);
394 cc->scpid = NULL;
395 }
396 g_assert( cc->newConnRef == NULL );
398 G_OBJECT_CLASS(parent_class)->dispose(object);
399 }
402 static void
403 sp_connector_context_setup(SPEventContext *ec)
404 {
405 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec);
406 SPDesktop *dt = ec->desktop;
408 if (((SPEventContextClass *) parent_class)->setup) {
409 ((SPEventContextClass *) parent_class)->setup(ec);
410 }
412 cc->selection = sp_desktop_selection(dt);
414 cc->sel_changed_connection.disconnect();
415 cc->sel_changed_connection = cc->selection->connectChanged(
416 sigc::bind(sigc::ptr_fun(&cc_selection_changed),
417 (gpointer) cc));
419 /* Create red bpath */
420 cc->red_bpath = sp_canvas_bpath_new(sp_desktop_sketch(ec->desktop), NULL);
421 sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(cc->red_bpath), cc->red_color,
422 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
423 sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(cc->red_bpath), 0x00000000,
424 SP_WIND_RULE_NONZERO);
425 /* Create red curve */
426 cc->red_curve = new SPCurve();
428 /* Create green curve */
429 cc->green_curve = new SPCurve();
431 // Notice the initial selection.
432 cc_selection_changed(cc->selection, (gpointer) cc);
434 cc->within_tolerance = false;
436 sp_event_context_read(ec, "curvature");
437 sp_event_context_read(ec, "orthogonal");
438 sp_event_context_read(ec, "mode");
439 cc->knot_tip = cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE ? cc_knot_tips[0] : cc_knot_tips[1];
440 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
441 if (prefs->getBool("/tools/connector/selcue", 0)) {
442 ec->enableSelectionCue();
443 }
445 // Make sure we see all enter events for canvas items,
446 // even if a mouse button is depressed.
447 dt->canvas->gen_all_enter_events = true;
448 }
451 static void
452 sp_connector_context_set(SPEventContext *ec, Inkscape::Preferences::Entry *val)
453 {
454 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec);
456 /* fixme: Proper error handling for non-numeric data. Use a locale-independent function like
457 * g_ascii_strtod (or a thin wrapper that does the right thing for invalid values inf/nan). */
458 Glib::ustring name = val->getEntryName();
459 if ( name == "curvature" ) {
460 cc->curvature = val->getDoubleLimited(); // prevents NaN and +/-Inf from messing up
461 }
462 else if ( name == "orthogonal" ) {
463 cc->isOrthogonal = val->getBool();
464 }
465 else if ( name == "mode")
466 {
467 sp_connector_context_switch_mode(ec, val->getBool() ? SP_CONNECTOR_CONTEXT_EDITING_MODE : SP_CONNECTOR_CONTEXT_DRAWING_MODE);
468 }
469 }
471 void sp_connector_context_switch_mode(SPEventContext* ec, unsigned int newMode)
472 {
473 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec);
475 cc->mode = newMode;
476 if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE )
477 {
478 ec->cursor_shape = cursor_connector_xpm;
479 cc->knot_tip = cc_knot_tips[0];
480 if (cc->selected_handle)
481 cc_deselect_handle( cc->selected_handle );
482 cc->selected_handle = NULL;
483 // Show all default connection points
485 }
486 else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE )
487 {
488 ec->cursor_shape = cursor_node_xpm;
489 cc->knot_tip = cc_knot_tips[1];
490 /* if (cc->active_shape)
491 {
492 cc->selection->set( SP_OBJECT( cc->active_shape ) );
493 }
494 else
495 {
496 SPItem* item = cc->selection->singleItem();
497 if ( item )
498 {
499 cc_set_active_shape(cc, item);
500 cc->selection->set( SP_OBJECT( item ) );
501 }
502 }*/
503 }
504 sp_event_context_update_cursor(ec);
506 }
509 static void
510 sp_connector_context_finish(SPEventContext *ec)
511 {
512 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(ec);
514 spcc_connector_finish(cc);
515 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
517 if (((SPEventContextClass *) parent_class)->finish) {
518 ((SPEventContextClass *) parent_class)->finish(ec);
519 }
521 if (cc->selection) {
522 cc->selection = NULL;
523 }
524 cc_clear_active_shape(cc);
525 cc_clear_active_conn(cc);
527 // Restore the default event generating behaviour.
528 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(ec);
529 desktop->canvas->gen_all_enter_events = false;
530 }
533 //-----------------------------------------------------------------------------
536 static void
537 cc_clear_active_shape(SPConnectorContext *cc)
538 {
539 if (cc->active_shape == NULL) {
540 return;
541 }
542 g_assert( cc->active_shape_repr );
543 g_assert( cc->active_shape_layer_repr );
545 cc->active_shape = NULL;
547 if (cc->active_shape_repr) {
548 sp_repr_remove_listener_by_data(cc->active_shape_repr, cc);
549 Inkscape::GC::release(cc->active_shape_repr);
550 cc->active_shape_repr = NULL;
552 sp_repr_remove_listener_by_data(cc->active_shape_layer_repr, cc);
553 Inkscape::GC::release(cc->active_shape_layer_repr);
554 cc->active_shape_layer_repr = NULL;
555 }
557 // Hide the connection points if they exist.
558 if (cc->connpthandles.size()) {
559 for (ConnectionPointMap::iterator it = cc->connpthandles.begin();
560 it != cc->connpthandles.end(); ++it) {
561 sp_knot_hide(it->first);
562 }
563 }
564 }
567 static void
568 cc_clear_active_conn(SPConnectorContext *cc)
569 {
570 if (cc->active_conn == NULL) {
571 return;
572 }
573 g_assert( cc->active_conn_repr );
575 cc->active_conn = NULL;
577 if (cc->active_conn_repr) {
578 sp_repr_remove_listener_by_data(cc->active_conn_repr, cc);
579 Inkscape::GC::release(cc->active_conn_repr);
580 cc->active_conn_repr = NULL;
581 }
583 // Hide the endpoint handles.
584 for (int i = 0; i < 2; ++i) {
585 if (cc->endpt_handle[i]) {
586 sp_knot_hide(cc->endpt_handle[i]);
587 }
588 }
589 }
592 static bool
593 conn_pt_handle_test(SPConnectorContext *cc, Geom::Point& p, gchar **href, gchar **cpid)
594 {
595 // TODO: this will need to change when there are more connection
596 // points available for each shape.
598 if (cc->active_handle && (cc->connpthandles.find(cc->active_handle) != cc->connpthandles.end()))
599 {
600 p = cc->active_handle->pos;
601 const ConnectionPoint& cp = cc->connpthandles[cc->active_handle];
602 *href = g_strdup_printf("#%s", cc->active_shape->getId());
603 *cpid = g_strdup_printf("%c%d", cp.type == ConnPointDefault ? 'd' : 'u' , cp.id);
604 return true;
605 }
606 *href = NULL;
607 *cpid = NULL;
608 return false;
609 }
611 static void
612 cc_select_handle(SPKnot* knot)
613 {
614 knot->setShape(SP_KNOT_SHAPE_SQUARE);
615 knot->setSize(10);
616 knot->setAnchor(GTK_ANCHOR_CENTER);
617 knot->setFill(0x0000ffff, 0x0000ffff, 0x0000ffff);
618 sp_knot_update_ctrl(knot);
619 }
621 static void
622 cc_deselect_handle(SPKnot* knot)
623 {
624 knot->setShape(SP_KNOT_SHAPE_SQUARE);
625 knot->setSize(8);
626 knot->setAnchor(GTK_ANCHOR_CENTER);
627 knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff);
628 sp_knot_update_ctrl(knot);
629 }
631 static gint
632 sp_connector_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)
633 {
634 gint ret = FALSE;
636 SPDesktop *desktop = event_context->desktop;
638 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(event_context);
640 Geom::Point p(event->button.x, event->button.y);
642 switch (event->type) {
643 case GDK_BUTTON_RELEASE:
644 if (event->button.button == 1 && !event_context->space_panning) {
645 if ((cc->state == SP_CONNECTOR_CONTEXT_DRAGGING) &&
646 (event_context->within_tolerance))
647 {
648 spcc_reset_colors(cc);
649 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
650 }
651 if (cc->state != SP_CONNECTOR_CONTEXT_IDLE) {
652 // Doing something else like rerouting.
653 break;
654 }
655 // find out clicked item, honoring Alt
656 SPItem *item = sp_event_context_find_item(desktop,
657 p, event->button.state & GDK_MOD1_MASK, FALSE);
659 if (event->button.state & GDK_SHIFT_MASK) {
660 cc->selection->toggle(item);
661 } else {
662 cc->selection->set(item);
663 if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE && cc->selected_handle )
664 {
665 cc_deselect_handle( cc->selected_handle );
666 cc->selected_handle = NULL;
667 }
668 /* When selecting a new item,
669 do not allow showing connection points
670 on connectors. (yet?)
671 */
672 if ( item != cc->active_shape && !cc_item_is_connector( item ) )
673 cc_set_active_shape( cc, item );
674 }
675 ret = TRUE;
677 }
678 break;
679 case GDK_ENTER_NOTIFY:
680 {
681 if (cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE || (cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE && !cc->selected_handle))
682 {
683 if (cc_item_is_shape(item)) {
685 // I don't really understand what the above does,
686 // so I commented it.
687 // This is a shape, so show connection point(s).
688 /* if (!(cc->active_shape)
689 // Don't show handle for another handle.
690 // || (cc->connpthandles.find((SPKnot*) item) != cc->connpthandles.end())
691 )
692 {
693 cc_set_active_shape(cc, item);
694 }*/
695 cc_set_active_shape(cc, item);
696 }
697 ret = TRUE;
698 }
699 break;
700 }
701 default:
702 break;
703 }
705 return ret;
706 }
709 gint
710 sp_connector_context_root_handler(SPEventContext *ec, GdkEvent *event)
711 {
712 SPConnectorContext *const cc = SP_CONNECTOR_CONTEXT(ec);
714 gint ret = FALSE;
716 switch (event->type) {
717 case GDK_BUTTON_PRESS:
718 ret = connector_handle_button_press(cc, event->button);
719 break;
721 case GDK_MOTION_NOTIFY:
722 ret = connector_handle_motion_notify(cc, event->motion);
723 break;
725 case GDK_BUTTON_RELEASE:
726 ret = connector_handle_button_release(cc, event->button);
727 break;
728 case GDK_KEY_PRESS:
729 ret = connector_handle_key_press(cc, get_group0_keyval (&event->key));
730 break;
732 default:
733 break;
734 }
736 if (!ret) {
737 gint (*const parent_root_handler)(SPEventContext *, GdkEvent *)
738 = ((SPEventContextClass *) parent_class)->root_handler;
739 if (parent_root_handler) {
740 ret = parent_root_handler(ec, event);
741 }
742 }
744 return ret;
745 }
748 static gint
749 connector_handle_button_press(SPConnectorContext *const cc, GdkEventButton const &bevent)
750 {
751 Geom::Point const event_w(bevent.x, bevent.y);
752 /* Find desktop coordinates */
753 Geom::Point p = cc->desktop->w2d(event_w);
754 SPEventContext *event_context = SP_EVENT_CONTEXT(cc);
756 gint ret = FALSE;
757 if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE )
758 {
759 if ( bevent.button == 1 && !event_context->space_panning ) {
761 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
763 if (Inkscape::have_viable_layer(desktop, cc->_message_context) == false) {
764 return TRUE;
765 }
767 Geom::Point const event_w(bevent.x,
768 bevent.y);
769 // connector_drag_origin_w = event_w;
770 cc->xp = bevent.x;
771 cc->yp = bevent.y;
772 cc->within_tolerance = true;
774 Geom::Point const event_dt = cc->desktop->w2d(event_w);
776 SnapManager &m = cc->desktop->namedview->snap_manager;
778 switch (cc->state) {
779 case SP_CONNECTOR_CONTEXT_STOP:
780 /* This is allowed, if we just canceled curve */
781 case SP_CONNECTOR_CONTEXT_IDLE:
782 {
783 if ( cc->npoints == 0 ) {
784 cc_clear_active_conn(cc);
786 SP_EVENT_CONTEXT_DESKTOP(cc)->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating new connector"));
788 /* Set start anchor */
789 /* Create green anchor */
790 Geom::Point p = event_dt;
792 // Test whether we clicked on a connection point
793 bool found = conn_pt_handle_test(cc, p, &cc->shref, &cc->scpid);
795 if (!found) {
796 // This is the first point, so just snap it to the grid
797 // as there's no other points to go off.
798 m.setup(cc->desktop);
799 m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
800 m.unSetup();
801 }
802 spcc_connector_set_initial_point(cc, p);
804 }
805 cc->state = SP_CONNECTOR_CONTEXT_DRAGGING;
806 ret = TRUE;
807 break;
808 }
809 case SP_CONNECTOR_CONTEXT_DRAGGING:
810 {
811 // This is the second click of a connector creation.
812 m.setup(cc->desktop);
813 m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
814 m.unSetup();
816 spcc_connector_set_subsequent_point(cc, p);
817 spcc_connector_finish_segment(cc, p);
818 // Test whether we clicked on a connection point
819 /*bool found = */conn_pt_handle_test(cc, p, &cc->ehref, &cc->ecpid);
820 if (cc->npoints != 0) {
821 spcc_connector_finish(cc);
822 }
823 cc_set_active_conn(cc, cc->newconn);
824 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
825 ret = TRUE;
826 break;
827 }
828 case SP_CONNECTOR_CONTEXT_CLOSE:
829 {
830 g_warning("Button down in CLOSE state");
831 break;
832 }
833 default:
834 break;
835 }
836 } else if (bevent.button == 3) {
837 if (cc->state == SP_CONNECTOR_CONTEXT_REROUTING) {
838 // A context menu is going to be triggered here,
839 // so end the rerouting operation.
840 cc_connector_rerouting_finish(cc, &p);
842 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
844 // Don't set ret to TRUE, so we drop through to the
845 // parent handler which will open the context menu.
846 }
847 else if (cc->npoints != 0) {
848 spcc_connector_finish(cc);
849 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
850 ret = TRUE;
851 }
852 }
853 }
854 else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE )
855 {
856 if ( bevent.button == 1 && !event_context->space_panning )
857 {
858 // Initialize variables in case of dragging
860 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
862 if (Inkscape::have_viable_layer(desktop, cc->_message_context) == false) {
863 return TRUE;
864 }
866 cc->xp = bevent.x;
867 cc->yp = bevent.y;
868 cc->within_tolerance = true;
870 ConnectionPointMap::iterator const& active_knot_it = cc->connpthandles.find( cc->active_handle );
872 switch (cc->state)
873 {
874 case SP_CONNECTOR_CONTEXT_IDLE:
875 if ( active_knot_it != cc->connpthandles.end() )
876 {
877 // We do not allow selecting and, thereby, moving default knots
878 if ( active_knot_it->second.type != ConnPointDefault)
879 {
880 if (cc->selected_handle != cc->active_handle)
881 {
882 if ( cc->selected_handle )
883 cc_deselect_handle( cc->selected_handle );
884 cc->selected_handle = cc->active_handle;
885 cc_select_handle( cc->selected_handle );
886 }
887 }
888 else
889 // Just ignore the default connection point
890 return FALSE;
891 }
892 else
893 if ( cc->selected_handle )
894 {
895 cc_deselect_handle( cc->selected_handle );
896 cc->selected_handle = NULL;
897 }
899 if ( cc->selected_handle )
900 {
901 cc->state = SP_CONNECTOR_CONTEXT_DRAGGING;
902 cc->selection->set( SP_OBJECT( cc->active_shape ) );
903 }
905 ret = TRUE;
906 break;
907 // Dragging valid because of the way we create
908 // new connection points.
909 case SP_CONNECTOR_CONTEXT_DRAGGING:
910 // Do nothing.
911 ret = TRUE;
912 break;
913 }
914 }
915 }
916 return ret;
917 }
920 static gint
921 connector_handle_motion_notify(SPConnectorContext *const cc, GdkEventMotion const &mevent)
922 {
923 gint ret = FALSE;
924 SPEventContext *event_context = SP_EVENT_CONTEXT(cc);
925 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
927 if (event_context->space_panning || mevent.state & GDK_BUTTON2_MASK || mevent.state & GDK_BUTTON3_MASK) {
928 // allow middle-button scrolling
929 return FALSE;
930 }
932 Geom::Point const event_w(mevent.x, mevent.y);
934 if (cc->within_tolerance) {
935 cc->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
936 if ( ( abs( (gint) mevent.x - cc->xp ) < cc->tolerance ) &&
937 ( abs( (gint) mevent.y - cc->yp ) < cc->tolerance ) ) {
938 return FALSE; // Do not drag if we're within tolerance from origin.
939 }
940 }
941 // Once the user has moved farther than tolerance from the original location
942 // (indicating they intend to move the object, not click), then always process
943 // the motion notify coordinates as given (no snapping back to origin)
944 cc->within_tolerance = false;
946 SPDesktop *const dt = cc->desktop;
948 /* Find desktop coordinates */
949 Geom::Point p = dt->w2d(event_w);
951 if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE )
952 {
953 SnapManager &m = dt->namedview->snap_manager;
955 switch (cc->state) {
956 case SP_CONNECTOR_CONTEXT_DRAGGING:
957 {
958 gobble_motion_events(mevent.state);
959 // This is movement during a connector creation.
960 if ( cc->npoints > 0 ) {
961 m.setup(dt);
962 m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
963 m.unSetup();
964 cc->selection->clear();
965 spcc_connector_set_subsequent_point(cc, p);
966 ret = TRUE;
967 }
968 break;
969 }
970 case SP_CONNECTOR_CONTEXT_REROUTING:
971 {
972 gobble_motion_events(GDK_BUTTON1_MASK);
973 g_assert( SP_IS_PATH(cc->clickeditem));
975 m.setup(dt);
976 m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
977 m.unSetup();
979 // Update the hidden path
980 Geom::Matrix i2d = (cc->clickeditem)->i2d_affine();
981 Geom::Matrix d2i = i2d.inverse();
982 SPPath *path = SP_PATH(cc->clickeditem);
983 SPCurve *curve = path->original_curve ? path->original_curve : path->curve;
984 if (cc->clickedhandle == cc->endpt_handle[0]) {
985 Geom::Point o = cc->endpt_handle[1]->pos;
986 curve->stretch_endpoints(p * d2i, o * d2i);
987 }
988 else {
989 Geom::Point o = cc->endpt_handle[0]->pos;
990 curve->stretch_endpoints(o * d2i, p * d2i);
991 }
992 sp_conn_reroute_path_immediate(path);
994 // Copy this to the temporary visible path
995 cc->red_curve = path->original_curve ?
996 path->original_curve->copy() : path->curve->copy();
997 cc->red_curve->transform(i2d);
999 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), cc->red_curve);
1000 ret = TRUE;
1001 break;
1002 }
1003 case SP_CONNECTOR_CONTEXT_STOP:
1004 /* This is perfectly valid */
1005 break;
1006 default:
1007 if (!sp_event_context_knot_mouseover(cc)) {
1008 m.setup(dt);
1009 m.preSnap(Inkscape::SnapCandidatePoint(p, Inkscape::SNAPSOURCE_OTHER_HANDLE));
1010 m.unSetup();
1011 }
1012 break;
1013 }
1014 }
1015 else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE )
1016 {
1017 switch ( cc->state )
1018 {
1019 case SP_CONNECTOR_CONTEXT_DRAGGING:
1020 sp_knot_set_position(cc->selected_handle, p, 0);
1021 ret = TRUE;
1022 break;
1023 case SP_CONNECTOR_CONTEXT_NEWCONNPOINT:
1024 sp_knot_set_position(cc->selected_handle, p, 0);
1025 ret = TRUE;
1026 break;
1027 }
1028 }
1030 return ret;
1031 }
1034 static gint
1035 connector_handle_button_release(SPConnectorContext *const cc, GdkEventButton const &revent)
1036 {
1037 gint ret = FALSE;
1038 SPEventContext *event_context = SP_EVENT_CONTEXT(cc);
1039 if ( revent.button == 1 && !event_context->space_panning ) {
1041 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1042 SPDocument *doc = sp_desktop_document(desktop);
1044 SnapManager &m = desktop->namedview->snap_manager;
1046 Geom::Point const event_w(revent.x, revent.y);
1048 /* Find desktop coordinates */
1049 Geom::Point p = cc->desktop->w2d(event_w);
1050 if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE )
1051 {
1052 switch (cc->state) {
1053 //case SP_CONNECTOR_CONTEXT_POINT:
1054 case SP_CONNECTOR_CONTEXT_DRAGGING:
1055 {
1056 m.setup(desktop);
1057 m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
1058 m.unSetup();
1060 if (cc->within_tolerance)
1061 {
1062 spcc_connector_finish_segment(cc, p);
1063 return TRUE;
1064 }
1065 // Connector has been created via a drag, end it now.
1066 spcc_connector_set_subsequent_point(cc, p);
1067 spcc_connector_finish_segment(cc, p);
1068 // Test whether we clicked on a connection point
1069 /*bool found = */conn_pt_handle_test(cc, p, &cc->ehref, &cc->ecpid);
1070 if (cc->npoints != 0) {
1071 spcc_connector_finish(cc);
1072 }
1073 cc_set_active_conn(cc, cc->newconn);
1074 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1075 break;
1076 }
1077 case SP_CONNECTOR_CONTEXT_REROUTING:
1078 {
1079 m.setup(desktop);
1080 m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
1081 m.unSetup();
1082 cc_connector_rerouting_finish(cc, &p);
1084 doc->ensureUpToDate();
1085 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1086 return TRUE;
1087 break;
1088 }
1089 case SP_CONNECTOR_CONTEXT_STOP:
1090 /* This is allowed, if we just cancelled curve */
1091 break;
1092 default:
1093 break;
1094 }
1095 ret = TRUE;
1096 }
1097 else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE )
1098 {
1099 switch ( cc->state )
1100 {
1101 case SP_CONNECTOR_CONTEXT_DRAGGING:
1103 if (!cc->within_tolerance)
1104 {
1105 m.setup(desktop);
1106 m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
1107 m.unSetup();
1108 sp_knot_set_position(cc->selected_handle, p, 0);
1109 ConnectionPoint& cp = cc->connpthandles[cc->selected_handle];
1110 cp.pos = p * (cc->active_shape)->dt2i_affine();
1111 cc->active_shape->avoidRef->updateConnectionPoint(cp);
1112 }
1114 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1115 ret = TRUE;
1116 break;
1119 case SP_CONNECTOR_CONTEXT_NEWCONNPOINT:
1120 m.setup(desktop);
1121 m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
1122 m.unSetup();
1124 sp_knot_set_position(cc->selected_handle, p, 0);
1126 ConnectionPoint cp;
1127 cp.type = ConnPointUserDefined;
1128 cp.pos = p * (cc->active_shape)->dt2i_affine();
1129 cp.dir = Avoid::ConnDirAll;
1130 g_object_unref(cc->selected_handle);
1131 cc->active_shape->avoidRef->addConnectionPoint(cp);
1132 doc->ensureUpToDate();
1133 for (ConnectionPointMap::iterator it = cc->connpthandles.begin(); it != cc->connpthandles.end(); ++it)
1134 if (it->second.type == ConnPointUserDefined && it->second.id == cp.id)
1135 {
1136 cc->selected_handle = it->first;
1137 break;
1138 }
1139 cc_select_handle( cc->selected_handle );
1140 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1141 ret = TRUE;
1142 break;
1143 }
1144 }
1145 }
1148 return ret;
1149 }
1152 static gint
1153 connector_handle_key_press(SPConnectorContext *const cc, guint const keyval)
1154 {
1155 gint ret = FALSE;
1156 /* fixme: */
1157 if ( cc->mode == SP_CONNECTOR_CONTEXT_DRAWING_MODE )
1158 {
1159 switch (keyval) {
1160 case GDK_Return:
1161 case GDK_KP_Enter:
1162 if (cc->npoints != 0) {
1163 spcc_connector_finish(cc);
1164 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1165 ret = TRUE;
1166 }
1167 break;
1168 case GDK_Escape:
1169 if (cc->state == SP_CONNECTOR_CONTEXT_REROUTING) {
1171 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1172 SPDocument *doc = sp_desktop_document(desktop);
1174 cc_connector_rerouting_finish(cc, NULL);
1176 DocumentUndo::undo(doc);
1178 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1179 desktop->messageStack()->flash( Inkscape::NORMAL_MESSAGE,
1180 _("Connector endpoint drag cancelled."));
1181 ret = TRUE;
1182 }
1183 else if (cc->npoints != 0) {
1184 // if drawing, cancel, otherwise pass it up for deselecting
1185 cc->state = SP_CONNECTOR_CONTEXT_STOP;
1186 spcc_reset_colors(cc);
1187 ret = TRUE;
1188 }
1189 break;
1190 default:
1191 break;
1192 }
1193 }
1194 else if ( cc->mode == SP_CONNECTOR_CONTEXT_EDITING_MODE )
1195 {
1196 switch ( cc->state )
1197 {
1198 case SP_CONNECTOR_CONTEXT_DRAGGING:
1199 if ( keyval == GDK_Escape )
1200 {
1201 // Cancel connection point dragging
1203 // Obtain original position
1204 ConnectionPoint const& cp = cc->connpthandles[cc->selected_handle];
1205 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1206 const Geom::Matrix& i2doc = (cc->active_shape)->i2doc_affine();
1207 sp_knot_set_position(cc->selected_handle, cp.pos * i2doc * desktop->doc2dt(), 0);
1208 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1209 desktop->messageStack()->flash( Inkscape::NORMAL_MESSAGE,
1210 _("Connection point drag cancelled."));
1211 ret = TRUE;
1212 }
1213 else if ( keyval == GDK_Return || keyval == GDK_KP_Enter )
1214 {
1215 // Put connection point at current position
1217 Geom::Point p = cc->selected_handle->pos;
1219 if (!cc->within_tolerance)
1220 {
1221 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1222 SnapManager &m = desktop->namedview->snap_manager;
1223 m.setup(desktop);
1224 m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
1225 m.unSetup();
1226 sp_knot_set_position(cc->selected_handle, p, 0);
1227 ConnectionPoint& cp = cc->connpthandles[cc->selected_handle];
1228 cp.pos = p * (cc->active_shape)->dt2i_affine();
1229 cc->active_shape->avoidRef->updateConnectionPoint(cp);
1230 }
1232 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1233 ret = TRUE;
1234 }
1235 break;
1236 case SP_CONNECTOR_CONTEXT_NEWCONNPOINT:
1237 if ( keyval == GDK_Escape )
1238 {
1239 // Just destroy the knot
1240 g_object_unref( cc->selected_handle );
1241 cc->selected_handle = NULL;
1242 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1243 ret = TRUE;
1244 }
1245 else if ( keyval == GDK_Return || keyval == GDK_KP_Enter )
1246 {
1247 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1248 SPDocument *doc = sp_desktop_document(desktop);
1249 SnapManager &m = desktop->namedview->snap_manager;
1250 m.setup(desktop);
1251 Geom::Point p = cc->selected_handle->pos;
1252 m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
1253 m.unSetup();
1254 sp_knot_set_position(cc->selected_handle, p, 0);
1256 ConnectionPoint cp;
1257 cp.type = ConnPointUserDefined;
1258 cp.pos = p * (cc->active_shape)->dt2i_affine();
1259 cp.dir = Avoid::ConnDirAll;
1260 g_object_unref(cc->selected_handle);
1261 cc->active_shape->avoidRef->addConnectionPoint(cp);
1262 doc->ensureUpToDate();
1263 for (ConnectionPointMap::iterator it = cc->connpthandles.begin(); it != cc->connpthandles.end(); ++it)
1264 if (it->second.type == ConnPointUserDefined && it->second.id == cp.id)
1265 {
1266 cc->selected_handle = it->first;
1267 break;
1268 }
1269 cc_select_handle( cc->selected_handle );
1270 cc->state = SP_CONNECTOR_CONTEXT_IDLE;
1271 ret = TRUE;
1272 }
1274 break;
1275 case SP_CONNECTOR_CONTEXT_IDLE:
1276 if ( keyval == GDK_Delete && cc->selected_handle )
1277 {
1278 cc->active_shape->avoidRef->deleteConnectionPoint(cc->connpthandles[cc->selected_handle]);
1279 cc->selected_handle = NULL;
1280 ret = TRUE;
1281 }
1283 break;
1284 }
1285 }
1287 return ret;
1288 }
1291 static void
1292 cc_connector_rerouting_finish(SPConnectorContext *const cc, Geom::Point *const p)
1293 {
1294 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1295 SPDocument *doc = sp_desktop_document(desktop);
1297 // Clear the temporary path:
1298 cc->red_curve->reset();
1299 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL);
1301 if (p != NULL)
1302 {
1303 // Test whether we clicked on a connection point
1304 gchar *shape_label, *cpid;
1305 bool found = conn_pt_handle_test(cc, *p, &shape_label, &cpid);
1307 if (found) {
1308 if (cc->clickedhandle == cc->endpt_handle[0]) {
1309 cc->clickeditem->setAttribute("inkscape:connection-start", shape_label, false);
1310 cc->clickeditem->setAttribute("inkscape:connection-start-point", cpid, false);
1311 }
1312 else {
1313 cc->clickeditem->setAttribute("inkscape:connection-end", shape_label, false);
1314 cc->clickeditem->setAttribute("inkscape:connection-end-point", cpid, false);
1315 }
1316 g_free(shape_label);
1317 }
1318 }
1319 cc->clickeditem->setHidden(false);
1320 sp_conn_reroute_path_immediate(SP_PATH(cc->clickeditem));
1321 cc->clickeditem->updateRepr();
1322 DocumentUndo::done(doc, SP_VERB_CONTEXT_CONNECTOR,
1323 _("Reroute connector"));
1324 cc_set_active_conn(cc, cc->clickeditem);
1325 }
1328 static void
1329 spcc_reset_colors(SPConnectorContext *cc)
1330 {
1331 /* Red */
1332 cc->red_curve->reset();
1333 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL);
1335 cc->green_curve->reset();
1336 cc->npoints = 0;
1337 }
1340 static void
1341 spcc_connector_set_initial_point(SPConnectorContext *const cc, Geom::Point const p)
1342 {
1343 g_assert( cc->npoints == 0 );
1345 cc->p[0] = p;
1346 cc->p[1] = p;
1347 cc->npoints = 2;
1348 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL);
1349 }
1352 static void
1353 spcc_connector_set_subsequent_point(SPConnectorContext *const cc, Geom::Point const p)
1354 {
1355 g_assert( cc->npoints != 0 );
1357 SPDesktop *dt = cc->desktop;
1358 Geom::Point o = dt->dt2doc(cc->p[0]);
1359 Geom::Point d = dt->dt2doc(p);
1360 Avoid::Point src(o[Geom::X], o[Geom::Y]);
1361 Avoid::Point dst(d[Geom::X], d[Geom::Y]);
1363 if (!cc->newConnRef) {
1364 Avoid::Router *router = sp_desktop_document(dt)->router;
1365 cc->newConnRef = new Avoid::ConnRef(router);
1366 cc->newConnRef->setEndpoint(Avoid::VertID::src, src);
1367 if (cc->isOrthogonal)
1368 cc->newConnRef->setRoutingType(Avoid::ConnType_Orthogonal);
1369 else
1370 cc->newConnRef->setRoutingType(Avoid::ConnType_PolyLine);
1371 }
1372 // Set new endpoint.
1373 cc->newConnRef->setEndpoint(Avoid::VertID::tar, dst);
1374 // Immediately generate new routes for connector.
1375 cc->newConnRef->makePathInvalid();
1376 cc->newConnRef->router()->processTransaction();
1377 // Recreate curve from libavoid route.
1378 recreateCurve( cc->red_curve, cc->newConnRef, cc->curvature );
1379 cc->red_curve->transform(dt->doc2dt());
1380 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), cc->red_curve);
1381 }
1384 /**
1385 * Concats red, blue and green.
1386 * If any anchors are defined, process these, optionally removing curves from white list
1387 * Invoke _flush_white to write result back to object.
1388 */
1389 static void
1390 spcc_concat_colors_and_flush(SPConnectorContext *cc)
1391 {
1392 SPCurve *c = cc->green_curve;
1393 cc->green_curve = new SPCurve();
1395 cc->red_curve->reset();
1396 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), NULL);
1398 if (c->is_empty()) {
1399 c->unref();
1400 return;
1401 }
1403 spcc_flush_white(cc, c);
1405 c->unref();
1406 }
1409 /*
1410 * Flushes white curve(s) and additional curve into object
1411 *
1412 * No cleaning of colored curves - this has to be done by caller
1413 * No rereading of white data, so if you cannot rely on ::modified, do it in caller
1414 *
1415 */
1417 static void
1418 spcc_flush_white(SPConnectorContext *cc, SPCurve *gc)
1419 {
1420 SPCurve *c;
1422 if (gc) {
1423 c = gc;
1424 c->ref();
1425 } else {
1426 return;
1427 }
1429 /* Now we have to go back to item coordinates at last */
1430 c->transform(SP_EVENT_CONTEXT_DESKTOP(cc)->dt2doc());
1432 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(cc);
1433 SPDocument *doc = sp_desktop_document(desktop);
1434 Inkscape::XML::Document *xml_doc = doc->getReprDoc();
1436 if ( c && !c->is_empty() ) {
1437 /* We actually have something to write */
1439 Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
1440 /* Set style */
1441 sp_desktop_apply_style_tool(desktop, repr, "/tools/connector", false);
1443 gchar *str = sp_svg_write_path( c->get_pathvector() );
1444 g_assert( str != NULL );
1445 repr->setAttribute("d", str);
1446 g_free(str);
1448 /* Attach repr */
1449 cc->newconn = SP_ITEM(desktop->currentLayer()->appendChildRepr(repr));
1450 cc->newconn->transform = SP_ITEM(desktop->currentLayer())->i2doc_affine().inverse();
1452 bool connection = false;
1453 cc->newconn->setAttribute( "inkscape:connector-type",
1454 cc->isOrthogonal ? "orthogonal" : "polyline", false );
1455 cc->newconn->setAttribute( "inkscape:connector-curvature",
1456 Glib::Ascii::dtostr(cc->curvature).c_str(), false );
1457 if (cc->shref)
1458 {
1459 cc->newconn->setAttribute( "inkscape:connection-start", cc->shref, false);
1460 if (cc->scpid) {
1461 cc->newconn->setAttribute( "inkscape:connection-start-point", cc->scpid, false);
1462 }
1463 connection = true;
1464 }
1466 if (cc->ehref)
1467 {
1468 cc->newconn->setAttribute( "inkscape:connection-end", cc->ehref, false);
1469 if (cc->ecpid) {
1470 cc->newconn->setAttribute( "inkscape:connection-end-point", cc->ecpid, false);
1471 }
1472 connection = true;
1473 }
1474 // Process pending updates.
1475 cc->newconn->updateRepr();
1476 doc->ensureUpToDate();
1478 if (connection) {
1479 // Adjust endpoints to shape edge.
1480 sp_conn_reroute_path_immediate(SP_PATH(cc->newconn));
1481 cc->newconn->updateRepr();
1482 }
1484 // Only set the selection after we are finished with creating the attributes of
1485 // the connector. Otherwise, the selection change may alter the defaults for
1486 // values like curvature in the connector context, preventing subsequent lookup
1487 // of their original values.
1488 cc->selection->set(repr);
1489 Inkscape::GC::release(repr);
1490 }
1492 c->unref();
1494 DocumentUndo::done(doc, SP_VERB_CONTEXT_CONNECTOR, _("Create connector"));
1495 }
1498 static void
1499 spcc_connector_finish_segment(SPConnectorContext *const cc, Geom::Point const /*p*/)
1500 {
1501 if (!cc->red_curve->is_empty()) {
1502 cc->green_curve->append_continuous(cc->red_curve, 0.0625);
1504 cc->p[0] = cc->p[3];
1505 cc->p[1] = cc->p[4];
1506 cc->npoints = 2;
1508 cc->red_curve->reset();
1509 }
1510 }
1513 static void
1514 spcc_connector_finish(SPConnectorContext *const cc)
1515 {
1516 SPDesktop *const desktop = cc->desktop;
1517 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Finishing connector"));
1519 cc->red_curve->reset();
1520 spcc_concat_colors_and_flush(cc);
1522 cc->npoints = 0;
1524 if (cc->newConnRef) {
1525 cc->newConnRef->removeFromGraph();
1526 delete cc->newConnRef;
1527 cc->newConnRef = NULL;
1528 }
1529 }
1532 static gboolean
1533 cc_generic_knot_handler(SPCanvasItem *, GdkEvent *event, SPKnot *knot)
1534 {
1535 g_assert (knot != NULL);
1537 g_object_ref(knot);
1539 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(
1540 knot->desktop->event_context);
1542 gboolean consumed = FALSE;
1544 gchar* knot_tip = knot->tip ? knot->tip : cc->knot_tip;
1545 switch (event->type) {
1546 case GDK_ENTER_NOTIFY:
1547 sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, TRUE);
1549 cc->active_handle = knot;
1550 if (knot_tip)
1551 {
1552 knot->desktop->event_context->defaultMessageContext()->set(
1553 Inkscape::NORMAL_MESSAGE, knot_tip);
1554 }
1556 consumed = TRUE;
1557 break;
1558 case GDK_LEAVE_NOTIFY:
1559 sp_knot_set_flag(knot, SP_KNOT_MOUSEOVER, FALSE);
1561 cc->active_handle = NULL;
1563 if (knot_tip) {
1564 knot->desktop->event_context->defaultMessageContext()->clear();
1565 }
1567 consumed = TRUE;
1568 break;
1569 default:
1570 break;
1571 }
1573 g_object_unref(knot);
1575 return consumed;
1576 }
1579 static gboolean
1580 endpt_handler(SPKnot */*knot*/, GdkEvent *event, SPConnectorContext *cc)
1581 {
1582 g_assert( SP_IS_CONNECTOR_CONTEXT(cc) );
1584 gboolean consumed = FALSE;
1586 switch (event->type) {
1587 case GDK_BUTTON_PRESS:
1588 g_assert( (cc->active_handle == cc->endpt_handle[0]) ||
1589 (cc->active_handle == cc->endpt_handle[1]) );
1590 if (cc->state == SP_CONNECTOR_CONTEXT_IDLE) {
1591 cc->clickeditem = cc->active_conn;
1592 cc->clickedhandle = cc->active_handle;
1593 cc_clear_active_conn(cc);
1594 cc->state = SP_CONNECTOR_CONTEXT_REROUTING;
1596 // Disconnect from attached shape
1597 unsigned ind = (cc->active_handle == cc->endpt_handle[0]) ? 0 : 1;
1598 sp_conn_end_detach(cc->clickeditem, ind);
1600 Geom::Point origin;
1601 if (cc->clickedhandle == cc->endpt_handle[0]) {
1602 origin = cc->endpt_handle[1]->pos;
1603 }
1604 else {
1605 origin = cc->endpt_handle[0]->pos;
1606 }
1608 // Show the red path for dragging.
1609 cc->red_curve = SP_PATH(cc->clickeditem)->original_curve ? SP_PATH(cc->clickeditem)->original_curve->copy() : SP_PATH(cc->clickeditem)->curve->copy();
1610 Geom::Matrix i2d = (cc->clickeditem)->i2d_affine();
1611 cc->red_curve->transform(i2d);
1612 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(cc->red_bpath), cc->red_curve);
1614 cc->clickeditem->setHidden(true);
1616 // The rest of the interaction rerouting the connector is
1617 // handled by the context root handler.
1618 consumed = TRUE;
1619 }
1620 break;
1621 default:
1622 break;
1623 }
1625 return consumed;
1626 }
1628 static void cc_active_shape_add_knot(SPDesktop* desktop, SPItem* item, ConnectionPointMap &cphandles, ConnectionPoint& cp)
1629 {
1630 SPKnot *knot = sp_knot_new(desktop, 0);
1632 knot->setShape(SP_KNOT_SHAPE_SQUARE);
1633 knot->setSize(8);
1634 knot->setAnchor(GTK_ANCHOR_CENTER);
1635 knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff);
1636 sp_knot_update_ctrl(knot);
1638 // We don't want to use the standard knot handler.
1639 g_signal_handler_disconnect(G_OBJECT(knot->item),
1640 knot->_event_handler_id);
1641 knot->_event_handler_id = 0;
1643 gtk_signal_connect(GTK_OBJECT(knot->item), "event",
1644 GTK_SIGNAL_FUNC(cc_generic_knot_handler), knot);
1645 sp_knot_set_position(knot, item->avoidRef->getConnectionPointPos(cp.type, cp.id) * desktop->doc2dt(), 0);
1646 sp_knot_show(knot);
1647 cphandles[knot] = cp;
1648 }
1650 static void cc_set_active_shape(SPConnectorContext *cc, SPItem *item)
1651 {
1652 g_assert(item != NULL );
1654 std::map<int, ConnectionPoint>* connpts = &item->avoidRef->connection_points;
1656 if (cc->active_shape != item)
1657 {
1658 // The active shape has changed
1659 // Rebuild everything
1660 cc->active_shape = item;
1661 // Remove existing active shape listeners
1662 if (cc->active_shape_repr) {
1663 sp_repr_remove_listener_by_data(cc->active_shape_repr, cc);
1664 Inkscape::GC::release(cc->active_shape_repr);
1666 sp_repr_remove_listener_by_data(cc->active_shape_layer_repr, cc);
1667 Inkscape::GC::release(cc->active_shape_layer_repr);
1668 }
1670 // Listen in case the active shape changes
1671 cc->active_shape_repr = SP_OBJECT_REPR(item);
1672 if (cc->active_shape_repr) {
1673 Inkscape::GC::anchor(cc->active_shape_repr);
1674 sp_repr_add_listener(cc->active_shape_repr, &shape_repr_events, cc);
1676 cc->active_shape_layer_repr = cc->active_shape_repr->parent();
1677 Inkscape::GC::anchor(cc->active_shape_layer_repr);
1678 sp_repr_add_listener(cc->active_shape_layer_repr, &layer_repr_events, cc);
1679 }
1682 // Set the connection points.
1683 if ( cc->connpthandles.size() )
1684 // destroy the old list
1685 while (! cc->connpthandles.empty() )
1686 {
1687 g_object_unref(cc->connpthandles.begin()->first);
1688 cc->connpthandles.erase(cc->connpthandles.begin());
1689 }
1690 // build the new one
1691 if ( connpts->size() )
1692 for (std::map<int, ConnectionPoint>::iterator it = connpts->begin(); it != connpts->end(); ++it)
1693 cc_active_shape_add_knot(cc->desktop, item, cc->connpthandles, it->second);
1695 // Also add default connection points
1696 // For now, only centre default connection point will
1697 // be available
1698 ConnectionPoint centre;
1699 centre.type = ConnPointDefault;
1700 centre.id = ConnPointPosCC;
1701 cc_active_shape_add_knot(cc->desktop, item, cc->connpthandles, centre);
1702 }
1703 else
1704 {
1705 // The active shape didn't change
1706 // Update only the connection point knots
1708 // Ensure the item's connection_points map
1709 // has been updated
1710 item->document->ensureUpToDate();
1712 std::set<int> seen;
1713 for ( ConnectionPointMap::iterator it = cc->connpthandles.begin(); it != cc->connpthandles.end() ;)
1714 {
1715 bool removed = false;
1716 if ( it->second.type == ConnPointUserDefined )
1717 {
1718 std::map<int, ConnectionPoint>::iterator p = connpts->find(it->second.id);
1719 if (p != connpts->end())
1720 {
1721 if ( it->second != p->second )
1722 // Connection point position has changed
1723 // Update knot position
1724 sp_knot_set_position(it->first,
1725 item->avoidRef->getConnectionPointPos(it->second.type, it->second.id) * cc->desktop->doc2dt(), 0);
1726 seen.insert(it->second.id);
1727 sp_knot_show(it->first);
1728 }
1729 else
1730 {
1731 // This connection point does no longer exist,
1732 // remove the knot
1733 ConnectionPointMap::iterator curr = it;
1734 ++it;
1735 g_object_unref( curr->first );
1736 cc->connpthandles.erase(curr);
1737 removed = true;
1738 }
1739 }
1740 else
1741 {
1742 // It's a default connection point
1743 // Just make sure it's position is correct
1744 sp_knot_set_position(it->first,
1745 item->avoidRef->getConnectionPointPos(it->second.type, it->second.id) * cc->desktop->doc2dt(), 0);
1746 sp_knot_show(it->first);
1748 }
1749 if ( !removed )
1750 ++it;
1751 }
1752 // Add knots for new connection points.
1753 if (connpts->size())
1754 for ( std::map<int, ConnectionPoint>::iterator it = connpts->begin(); it != connpts->end(); ++it )
1755 if ( seen.find(it->first) == seen.end() )
1756 // A new connection point has been added
1757 // to the shape. Add a knot for it.
1758 cc_active_shape_add_knot(cc->desktop, item, cc->connpthandles, it->second);
1759 }
1760 }
1763 static void
1764 cc_set_active_conn(SPConnectorContext *cc, SPItem *item)
1765 {
1766 g_assert( SP_IS_PATH(item) );
1768 SPCurve *curve = SP_PATH(item)->original_curve ? SP_PATH(item)->original_curve : SP_PATH(item)->curve;
1769 Geom::Matrix i2d = item->i2d_affine();
1771 if (cc->active_conn == item)
1772 {
1773 if (curve->is_empty())
1774 {
1775 // Connector is invisible because it is clipped to the boundary of
1776 // two overlpapping shapes.
1777 sp_knot_hide(cc->endpt_handle[0]);
1778 sp_knot_hide(cc->endpt_handle[1]);
1779 }
1780 else
1781 {
1782 // Just adjust handle positions.
1783 Geom::Point startpt = *(curve->first_point()) * i2d;
1784 sp_knot_set_position(cc->endpt_handle[0], startpt, 0);
1786 Geom::Point endpt = *(curve->last_point()) * i2d;
1787 sp_knot_set_position(cc->endpt_handle[1], endpt, 0);
1788 }
1790 return;
1791 }
1793 cc->active_conn = item;
1795 // Remove existing active conn listeners
1796 if (cc->active_conn_repr) {
1797 sp_repr_remove_listener_by_data(cc->active_conn_repr, cc);
1798 Inkscape::GC::release(cc->active_conn_repr);
1799 cc->active_conn_repr = NULL;
1800 }
1802 // Listen in case the active conn changes
1803 cc->active_conn_repr = SP_OBJECT_REPR(item);
1804 if (cc->active_conn_repr) {
1805 Inkscape::GC::anchor(cc->active_conn_repr);
1806 sp_repr_add_listener(cc->active_conn_repr, &shape_repr_events, cc);
1807 }
1809 for (int i = 0; i < 2; ++i) {
1811 // Create the handle if it doesn't exist
1812 if ( cc->endpt_handle[i] == NULL ) {
1813 SPKnot *knot = sp_knot_new(cc->desktop,
1814 _("<b>Connector endpoint</b>: drag to reroute or connect to new shapes"));
1816 knot->setShape(SP_KNOT_SHAPE_SQUARE);
1817 knot->setSize(7);
1818 knot->setAnchor(GTK_ANCHOR_CENTER);
1819 knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff);
1820 knot->setStroke(0x000000ff, 0x000000ff, 0x000000ff);
1821 sp_knot_update_ctrl(knot);
1823 // We don't want to use the standard knot handler,
1824 // since we don't want this knot to be draggable.
1825 g_signal_handler_disconnect(G_OBJECT(knot->item),
1826 knot->_event_handler_id);
1827 knot->_event_handler_id = 0;
1829 gtk_signal_connect(GTK_OBJECT(knot->item), "event",
1830 GTK_SIGNAL_FUNC(cc_generic_knot_handler), knot);
1832 cc->endpt_handle[i] = knot;
1833 }
1835 // Remove any existing handlers
1836 if (cc->endpt_handler_id[i]) {
1837 g_signal_handlers_disconnect_by_func(
1838 G_OBJECT(cc->endpt_handle[i]->item),
1839 (void*)G_CALLBACK(endpt_handler), (gpointer) cc );
1840 cc->endpt_handler_id[i] = 0;
1841 }
1843 // Setup handlers for connector endpoints, this is
1844 // is as 'after' so that cc_generic_knot_handler is
1845 // triggered first for any endpoint.
1846 cc->endpt_handler_id[i] = g_signal_connect_after(
1847 G_OBJECT(cc->endpt_handle[i]->item), "event",
1848 G_CALLBACK(endpt_handler), cc);
1849 }
1851 if (curve->is_empty())
1852 {
1853 // Connector is invisible because it is clipped to the boundary
1854 // of two overlpapping shapes. So, it doesn't need endpoints.
1855 return;
1856 }
1858 Geom::Point startpt = *(curve->first_point()) * i2d;
1859 sp_knot_set_position(cc->endpt_handle[0], startpt, 0);
1861 Geom::Point endpt = *(curve->last_point()) * i2d;
1862 sp_knot_set_position(cc->endpt_handle[1], endpt, 0);
1864 sp_knot_show(cc->endpt_handle[0]);
1865 sp_knot_show(cc->endpt_handle[1]);
1866 }
1868 void cc_create_connection_point(SPConnectorContext* cc)
1869 {
1870 if (cc->active_shape && cc->state == SP_CONNECTOR_CONTEXT_IDLE)
1871 {
1872 if (cc->selected_handle)
1873 {
1874 cc_deselect_handle( cc->selected_handle );
1875 }
1876 SPKnot *knot = sp_knot_new(cc->desktop, 0);
1877 // We do not process events on this knot.
1878 g_signal_handler_disconnect(G_OBJECT(knot->item),
1879 knot->_event_handler_id);
1880 knot->_event_handler_id = 0;
1882 cc_select_handle( knot );
1883 cc->selected_handle = knot;
1884 sp_knot_show(cc->selected_handle);
1885 cc->state = SP_CONNECTOR_CONTEXT_NEWCONNPOINT;
1886 }
1887 }
1889 void cc_remove_connection_point(SPConnectorContext* cc)
1890 {
1891 if (cc->selected_handle && cc->state == SP_CONNECTOR_CONTEXT_IDLE )
1892 {
1893 cc->active_shape->avoidRef->deleteConnectionPoint(cc->connpthandles[cc->selected_handle]);
1894 cc->selected_handle = NULL;
1895 }
1896 }
1898 static bool cc_item_is_shape(SPItem *item)
1899 {
1900 if (SP_IS_PATH(item)) {
1901 SPCurve *curve = (SP_SHAPE(item))->curve;
1902 if ( curve && !(curve->is_closed()) ) {
1903 // Open paths are connectors.
1904 return false;
1905 }
1906 }
1907 else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
1908 Inkscape::Preferences *prefs = Inkscape::Preferences::get();
1909 if (prefs->getBool("/tools/connector/ignoretext", true)) {
1910 // Don't count text as a shape we can connect connector to.
1911 return false;
1912 }
1913 }
1914 return true;
1915 }
1918 bool cc_item_is_connector(SPItem *item)
1919 {
1920 if (SP_IS_PATH(item)) {
1921 bool closed = SP_PATH(item)->original_curve ? SP_PATH(item)->original_curve->is_closed() : SP_PATH(item)->curve->is_closed();
1922 if (SP_PATH(item)->connEndPair.isAutoRoutingConn() && !closed) {
1923 // To be considered a connector, an object must be a non-closed
1924 // path that is marked with a "inkscape:connector-type" attribute.
1925 return true;
1926 }
1927 }
1928 return false;
1929 }
1932 void cc_selection_set_avoid(bool const set_avoid)
1933 {
1934 SPDesktop *desktop = inkscape_active_desktop();
1935 if (desktop == NULL) {
1936 return;
1937 }
1939 SPDocument *document = sp_desktop_document(desktop);
1941 Inkscape::Selection *selection = sp_desktop_selection(desktop);
1943 GSList *l = (GSList *) selection->itemList();
1945 int changes = 0;
1947 while (l) {
1948 SPItem *item = (SPItem *) l->data;
1950 char const *value = (set_avoid) ? "true" : NULL;
1952 if (cc_item_is_shape(item)) {
1953 item->setAttribute("inkscape:connector-avoid", value, false);
1954 item->avoidRef->handleSettingChange();
1955 changes++;
1956 }
1958 l = l->next;
1959 }
1961 if (changes == 0) {
1962 desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
1963 _("Select <b>at least one non-connector object</b>."));
1964 return;
1965 }
1967 char *event_desc = (set_avoid) ?
1968 _("Make connectors avoid selected objects") :
1969 _("Make connectors ignore selected objects");
1970 DocumentUndo::done(document, SP_VERB_CONTEXT_CONNECTOR, event_desc);
1971 }
1974 static void
1975 cc_selection_changed(Inkscape::Selection *selection, gpointer data)
1976 {
1977 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(data);
1978 //SPEventContext *ec = SP_EVENT_CONTEXT(cc);
1980 SPItem *item = selection->singleItem();
1982 if (cc->active_conn == item)
1983 {
1984 // Nothing to change.
1985 return;
1986 }
1987 if (item == NULL)
1988 {
1989 cc_clear_active_conn(cc);
1990 return;
1991 }
1993 if (cc_item_is_connector(item)) {
1994 cc_set_active_conn(cc, item);
1995 }
1996 }
1999 static void
2000 shape_event_attr_deleted(Inkscape::XML::Node */*repr*/, Inkscape::XML::Node *child,
2001 Inkscape::XML::Node */*ref*/, gpointer data)
2002 {
2003 g_assert(data);
2004 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(data);
2006 if (child == cc->active_shape_repr) {
2007 // The active shape has been deleted. Clear active shape.
2008 cc_clear_active_shape(cc);
2009 }
2010 }
2013 static void
2014 shape_event_attr_changed(Inkscape::XML::Node *repr, gchar const *name,
2015 gchar const */*old_value*/, gchar const */*new_value*/,
2016 bool /*is_interactive*/, gpointer data)
2017 {
2018 g_assert(data);
2019 SPConnectorContext *cc = SP_CONNECTOR_CONTEXT(data);
2021 // Look for changes that result in onscreen movement.
2022 if (!strcmp(name, "d") || !strcmp(name, "x") || !strcmp(name, "y") ||
2023 !strcmp(name, "width") || !strcmp(name, "height") ||
2024 !strcmp(name, "transform"))
2025 {
2026 if (repr == cc->active_shape_repr) {
2027 // Active shape has moved. Clear active shape.
2028 cc_clear_active_shape(cc);
2029 }
2030 else if (repr == cc->active_conn_repr) {
2031 // The active conn has been moved.
2032 // Set it again, which just sets new handle positions.
2033 cc_set_active_conn(cc, cc->active_conn);
2034 }
2035 }
2036 else
2037 if ( !strcmp(name, "inkscape:connection-points") )
2038 if (repr == cc->active_shape_repr)
2039 // The connection points of the active shape
2040 // have changed. Update them.
2041 cc_set_active_shape(cc, cc->active_shape);
2042 }
2045 /*
2046 Local Variables:
2047 mode:c++
2048 c-file-style:"stroustrup"
2049 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
2050 indent-tabs-mode:nil
2051 fill-column:99
2052 End:
2053 */
2054 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :