1 /** \file
2 * Pencil event context implementation.
3 */
5 /*
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * bulia byak <buliabyak@users.sf.net>
9 *
10 * Copyright (C) 2000 Lauris Kaplinski
11 * Copyright (C) 2000-2001 Ximian, Inc.
12 * Copyright (C) 2002 Lauris Kaplinski
13 * Copyright (C) 2004 Monash University
14 *
15 * Released under GNU GPL, read the file 'COPYING' for more information
16 */
18 #include <gdk/gdkkeysyms.h>
20 #include "pencil-context.h"
21 #include "desktop.h"
22 #include "desktop-handles.h"
23 #include "selection.h"
24 #include "selection-chemistry.h"
25 #include "draw-anchor.h"
26 #include "message-stack.h"
27 #include "message-context.h"
28 #include "modifier-fns.h"
29 #include "sp-path.h"
30 #include "prefs-utils.h"
31 #include "snap.h"
32 #include "pixmaps/cursor-pencil.xpm"
33 #include "display/bezier-utils.h"
34 #include "display/canvas-bpath.h"
35 #include <glibmm/i18n.h>
36 #include "libnr/in-svg-plane.h"
37 #include "context-fns.h"
38 #include "sp-namedview.h"
39 #include "xml/repr.h"
40 #include "document.h"
41 #include "desktop-style.h"
42 #include "macros.h"
43 #include "display/curve.h"
45 static void sp_pencil_context_class_init(SPPencilContextClass *klass);
46 static void sp_pencil_context_init(SPPencilContext *pc);
47 static void sp_pencil_context_setup(SPEventContext *ec);
48 static void sp_pencil_context_dispose(GObject *object);
50 static gint sp_pencil_context_root_handler(SPEventContext *event_context, GdkEvent *event);
51 static gint pencil_handle_button_press(SPPencilContext *const pc, GdkEventButton const &bevent);
52 static gint pencil_handle_motion_notify(SPPencilContext *const pc, GdkEventMotion const &mevent);
53 static gint pencil_handle_button_release(SPPencilContext *const pc, GdkEventButton const &revent);
54 static gint pencil_handle_key_press(SPPencilContext *const pc, guint const keyval, guint const state);
56 static void spdc_set_startpoint(SPPencilContext *pc, NR::Point const p);
57 static void spdc_set_endpoint(SPPencilContext *pc, NR::Point const p);
58 static void spdc_finish_endpoint(SPPencilContext *pc);
59 static void spdc_add_freehand_point(SPPencilContext *pc, NR::Point p, guint state);
60 static void fit_and_split(SPPencilContext *pc);
63 static SPDrawContextClass *pencil_parent_class;
64 static NR::Point pencil_drag_origin_w(0, 0);
65 static bool pencil_within_tolerance = false;
67 /**
68 * Register SPPencilContext class with Gdk and return its type number.
69 */
70 GType
71 sp_pencil_context_get_type()
72 {
73 static GType type = 0;
74 if (!type) {
75 GTypeInfo info = {
76 sizeof(SPPencilContextClass),
77 NULL, NULL,
78 (GClassInitFunc) sp_pencil_context_class_init,
79 NULL, NULL,
80 sizeof(SPPencilContext),
81 4,
82 (GInstanceInitFunc) sp_pencil_context_init,
83 NULL, /* value_table */
84 };
85 type = g_type_register_static(SP_TYPE_DRAW_CONTEXT, "SPPencilContext", &info, (GTypeFlags)0);
86 }
87 return type;
88 }
90 /**
91 * Initialize SPPencilContext vtable.
92 */
93 static void
94 sp_pencil_context_class_init(SPPencilContextClass *klass)
95 {
96 GObjectClass *object_class;
97 SPEventContextClass *event_context_class;
99 object_class = (GObjectClass *) klass;
100 event_context_class = (SPEventContextClass *) klass;
102 pencil_parent_class = (SPDrawContextClass*)g_type_class_peek_parent(klass);
104 object_class->dispose = sp_pencil_context_dispose;
106 event_context_class->setup = sp_pencil_context_setup;
107 event_context_class->root_handler = sp_pencil_context_root_handler;
108 }
110 /**
111 * Callback to initialize SPPencilContext object.
112 */
113 static void
114 sp_pencil_context_init(SPPencilContext *pc)
115 {
116 SPEventContext *event_context = SP_EVENT_CONTEXT(pc);
118 event_context->cursor_shape = cursor_pencil_xpm;
119 event_context->hot_x = 4;
120 event_context->hot_y = 4;
122 pc->npoints = 0;
123 pc->state = SP_PENCIL_CONTEXT_IDLE;
124 pc->req_tangent = NR::Point(0, 0);
125 }
127 /**
128 * Callback to setup SPPencilContext object.
129 */
130 static void
131 sp_pencil_context_setup(SPEventContext *ec)
132 {
133 if (prefs_get_int_attribute("tools.freehand.pencil", "selcue", 0) != 0) {
134 ec->enableSelectionCue();
135 }
137 if (((SPEventContextClass *) pencil_parent_class)->setup) {
138 ((SPEventContextClass *) pencil_parent_class)->setup(ec);
139 }
141 SPPencilContext *const pc = SP_PENCIL_CONTEXT(ec);
142 pc->is_drawing = false;
144 pc->anchor_statusbar = false;
145 }
147 static void
148 sp_pencil_context_dispose(GObject *object)
149 {
150 G_OBJECT_CLASS(pencil_parent_class)->dispose(object);
151 }
153 /** Snaps new node relative to the previous node. */
154 static void
155 spdc_endpoint_snap(SPPencilContext const *pc, NR::Point &p, guint const state)
156 {
157 if ((state & GDK_CONTROL_MASK)) { //CTRL enables constrained snapping
158 spdc_endpoint_snap_rotation(pc, p, pc->p[0], state);
159 } else {
160 if (!(state & GDK_SHIFT_MASK)) { //SHIFT disables all snapping, except the angular snapping above
161 //After all, the user explicitely asked for angular snapping by
162 //pressing CTRL
163 spdc_endpoint_snap_free(pc, p, state);
164 }
165 }
166 }
168 /**
169 * Callback for handling all pencil context events.
170 */
171 gint
172 sp_pencil_context_root_handler(SPEventContext *const ec, GdkEvent *event)
173 {
174 SPPencilContext *const pc = SP_PENCIL_CONTEXT(ec);
176 gint ret = FALSE;
178 switch (event->type) {
179 case GDK_BUTTON_PRESS:
180 ret = pencil_handle_button_press(pc, event->button);
181 break;
183 case GDK_MOTION_NOTIFY:
184 ret = pencil_handle_motion_notify(pc, event->motion);
185 break;
187 case GDK_BUTTON_RELEASE:
188 ret = pencil_handle_button_release(pc, event->button);
189 break;
191 case GDK_KEY_PRESS:
192 ret = pencil_handle_key_press(pc, get_group0_keyval (&event->key), event->key.state);
193 break;
195 default:
196 break;
197 }
199 if (!ret) {
200 gint (*const parent_root_handler)(SPEventContext *, GdkEvent *)
201 = ((SPEventContextClass *) pencil_parent_class)->root_handler;
202 if (parent_root_handler) {
203 ret = parent_root_handler(ec, event);
204 }
205 }
207 return ret;
208 }
210 static gint
211 pencil_handle_button_press(SPPencilContext *const pc, GdkEventButton const &bevent)
212 {
213 gint ret = FALSE;
214 SPEventContext *event_context = SP_EVENT_CONTEXT(pc);
215 if ( bevent.button == 1 && !event_context->space_panning) {
217 SPDrawContext *dc = SP_DRAW_CONTEXT (pc);
218 SPDesktop *desktop = SP_EVENT_CONTEXT_DESKTOP(dc);
219 Inkscape::Selection *selection = sp_desktop_selection(desktop);
221 if (Inkscape::have_viable_layer(desktop, dc->_message_context) == false) {
222 return TRUE;
223 }
225 NR::Point const button_w(bevent.x, bevent.y);
227 /* Find desktop coordinates */
228 Geom::Point p = pc->desktop->w2d(button_w);
230 /* Test whether we hit any anchor. */
231 SPDrawAnchor *anchor = spdc_test_inside(pc, button_w);
233 pencil_drag_origin_w = NR::Point(bevent.x,bevent.y);
234 pencil_within_tolerance = true;
236 switch (pc->state) {
237 case SP_PENCIL_CONTEXT_ADDLINE:
238 /* Current segment will be finished with release */
239 ret = TRUE;
240 break;
241 default:
242 /* Set first point of sequence */
243 if (bevent.state & GDK_CONTROL_MASK) {
244 freehand_create_single_dot(event_context, from_2geom(p), "tools.freehand.pencil", bevent.state);
245 ret = true;
246 break;
247 }
248 if (anchor) {
249 p = to_2geom(anchor->dp);
250 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Continuing selected path"));
251 } else {
253 if (!(bevent.state & GDK_SHIFT_MASK)) {
255 // This is the first click of a new curve; deselect item so that
256 // this curve is not combined with it (unless it is drawn from its
257 // anchor, which is handled by the sibling branch above)
258 selection->clear();
259 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating new path"));
260 SnapManager &m = desktop->namedview->snap_manager;
261 m.setup(desktop);
262 m.freeSnapReturnByRef(Inkscape::Snapper::SNAPPOINT_NODE, p);
263 } else if (selection->singleItem() && SP_IS_PATH(selection->singleItem())) {
264 desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Appending to selected path"));
265 }
266 }
267 pc->sa = anchor;
268 spdc_set_startpoint(pc, from_2geom(p));
269 ret = TRUE;
270 break;
271 }
273 pc->is_drawing = true;
274 }
275 return ret;
276 }
278 static gint
279 pencil_handle_motion_notify(SPPencilContext *const pc, GdkEventMotion const &mevent)
280 {
281 if ((mevent.state & GDK_CONTROL_MASK) && (mevent.state & GDK_BUTTON1_MASK)) {
282 // mouse was accidentally moved during Ctrl+click;
283 // ignore the motion and create a single point
284 pc->is_drawing = false;
285 return TRUE;
286 }
287 gint ret = FALSE;
288 SPDesktop *const dt = pc->desktop;
290 SPEventContext *event_context = SP_EVENT_CONTEXT(pc);
291 if (event_context->space_panning || mevent.state & GDK_BUTTON2_MASK || mevent.state & GDK_BUTTON3_MASK) {
292 // allow scrolling
293 return FALSE;
294 }
296 if ( ( mevent.state & GDK_BUTTON1_MASK ) && !pc->grab && pc->is_drawing) {
297 /* Grab mouse, so release will not pass unnoticed */
298 pc->grab = SP_CANVAS_ITEM(dt->acetate);
299 sp_canvas_item_grab(pc->grab, ( GDK_KEY_PRESS_MASK | GDK_BUTTON_PRESS_MASK |
300 GDK_BUTTON_RELEASE_MASK |
301 GDK_POINTER_MOTION_MASK ),
302 NULL, mevent.time);
303 }
305 /* Find desktop coordinates */
306 Geom::Point p = to_2geom(dt->w2d(NR::Point(mevent.x, mevent.y)));
308 /* Test whether we hit any anchor. */
309 SPDrawAnchor *anchor = spdc_test_inside(pc, NR::Point(mevent.x, mevent.y));
311 if (pencil_within_tolerance) {
312 gint const tolerance = prefs_get_int_attribute_limited("options.dragtolerance",
313 "value", 0, 0, 100);
314 if ( NR::LInfty( NR::Point(mevent.x,mevent.y) - pencil_drag_origin_w ) < tolerance ) {
315 return FALSE; // Do not drag if we're within tolerance from origin.
316 }
317 }
319 // Once the user has moved farther than tolerance from the original location
320 // (indicating they intend to move the object, not click), then always process the
321 // motion notify coordinates as given (no snapping back to origin)
322 pencil_within_tolerance = false;
324 switch (pc->state) {
325 case SP_PENCIL_CONTEXT_ADDLINE:
326 /* Set red endpoint */
327 if (anchor) {
328 p = to_2geom(anchor->dp);
329 } else {
330 NR::Point ptnr = from_2geom(p);
331 spdc_endpoint_snap(pc, ptnr, mevent.state);
332 p = to_2geom(ptnr);
333 }
334 spdc_set_endpoint(pc, from_2geom(p));
335 ret = TRUE;
336 break;
337 default:
338 /* We may be idle or already freehand */
339 if ( mevent.state & GDK_BUTTON1_MASK && pc->is_drawing ) {
340 pc->state = SP_PENCIL_CONTEXT_FREEHAND;
341 if ( !pc->sa && !pc->green_anchor ) {
342 /* Create green anchor */
343 pc->green_anchor = sp_draw_anchor_new(pc, pc->green_curve, TRUE, pc->p[0]);
344 }
345 /** \todo
346 * fixme: I am not sure whether we want to snap to anchors
347 * in middle of freehand (Lauris)
348 */
349 if (anchor) {
350 p = to_2geom(anchor->dp);
351 } else if ((mevent.state & GDK_SHIFT_MASK) == 0) {
352 SnapManager &m = dt->namedview->snap_manager;
353 m.setup(dt, NULL);
354 m.freeSnapReturnByRef(Inkscape::Snapper::SNAPPOINT_NODE, p);
355 }
356 if ( pc->npoints != 0 ) { // buttonpress may have happened before we entered draw context!
357 spdc_add_freehand_point(pc, from_2geom(p), mevent.state);
358 ret = TRUE;
359 }
361 if (anchor && !pc->anchor_statusbar) {
362 pc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Release</b> here to close and finish the path."));
363 pc->anchor_statusbar = true;
364 } else if (!anchor && pc->anchor_statusbar) {
365 pc->_message_context->clear();
366 pc->anchor_statusbar = false;
367 } else if (!anchor) {
368 pc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("Drawing a freehand path"));
369 }
371 } else {
372 if (anchor && !pc->anchor_statusbar) {
373 pc->_message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Drag</b> to continue the path from this point."));
374 pc->anchor_statusbar = true;
375 } else if (!anchor && pc->anchor_statusbar) {
376 pc->_message_context->clear();
377 pc->anchor_statusbar = false;
378 }
379 }
380 break;
381 }
382 return ret;
383 }
385 static gint
386 pencil_handle_button_release(SPPencilContext *const pc, GdkEventButton const &revent)
387 {
388 gint ret = FALSE;
390 SPEventContext *event_context = SP_EVENT_CONTEXT(pc);
391 if ( revent.button == 1 && pc->is_drawing && !event_context->space_panning) {
392 SPDesktop *const dt = pc->desktop;
394 pc->is_drawing = false;
396 /* Find desktop coordinates */
397 NR::Point p = dt->w2d(NR::Point(revent.x, revent.y));
399 /* Test whether we hit any anchor. */
400 SPDrawAnchor *anchor = spdc_test_inside(pc, NR::Point(revent.x,
401 revent.y));
403 switch (pc->state) {
404 case SP_PENCIL_CONTEXT_IDLE:
405 /* Releasing button in idle mode means single click */
406 /* We have already set up start point/anchor in button_press */
407 if (!(revent.state & GDK_CONTROL_MASK)) {
408 // Ctrl+click creates a single point so only set context in ADDLINE mode when Ctrl isn't pressed
409 pc->state = SP_PENCIL_CONTEXT_ADDLINE;
410 }
411 ret = TRUE;
412 break;
413 case SP_PENCIL_CONTEXT_ADDLINE:
414 /* Finish segment now */
415 if (anchor) {
416 p = anchor->dp;
417 } else {
418 spdc_endpoint_snap(pc, p, revent.state);
419 }
420 pc->ea = anchor;
421 spdc_set_endpoint(pc, p);
422 spdc_finish_endpoint(pc);
423 pc->state = SP_PENCIL_CONTEXT_IDLE;
424 ret = TRUE;
425 break;
426 case SP_PENCIL_CONTEXT_FREEHAND:
427 /* Finish segment now */
428 /// \todo fixme: Clean up what follows (Lauris)
429 if (anchor) {
430 p = anchor->dp;
431 }
432 pc->ea = anchor;
433 /* Write curves to object */
435 dt->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Finishing freehand"));
437 spdc_concat_colors_and_flush(pc, FALSE);
438 pc->sa = NULL;
439 pc->ea = NULL;
440 if (pc->green_anchor) {
441 pc->green_anchor = sp_draw_anchor_destroy(pc->green_anchor);
442 }
443 pc->state = SP_PENCIL_CONTEXT_IDLE;
444 ret = TRUE;
445 break;
446 default:
447 break;
448 }
450 if (pc->grab) {
451 /* Release grab now */
452 sp_canvas_item_ungrab(pc->grab, revent.time);
453 pc->grab = NULL;
454 }
456 ret = TRUE;
457 }
458 return ret;
459 }
461 static void
462 pencil_cancel (SPPencilContext *const pc)
463 {
464 if (pc->grab) {
465 /* Release grab now */
466 sp_canvas_item_ungrab(pc->grab, 0);
467 pc->grab = NULL;
468 }
470 pc->is_drawing = false;
472 pc->state = SP_PENCIL_CONTEXT_IDLE;
474 pc->red_curve->reset();
475 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), NULL);
476 while (pc->green_bpaths) {
477 gtk_object_destroy(GTK_OBJECT(pc->green_bpaths->data));
478 pc->green_bpaths = g_slist_remove(pc->green_bpaths, pc->green_bpaths->data);
479 }
480 pc->green_curve->reset();
481 if (pc->green_anchor) {
482 pc->green_anchor = sp_draw_anchor_destroy(pc->green_anchor);
483 }
485 pc->_message_context->clear();
486 pc->_message_context->flash(Inkscape::NORMAL_MESSAGE, _("Drawing cancelled"));
488 sp_canvas_end_forced_full_redraws(pc->desktop->canvas);
489 }
491 static gint
492 pencil_handle_key_press(SPPencilContext *const pc, guint const keyval, guint const state)
493 {
494 gint ret = FALSE;
495 switch (keyval) {
496 case GDK_Up:
497 case GDK_Down:
498 case GDK_KP_Up:
499 case GDK_KP_Down:
500 // Prevent the zoom field from activation.
501 if (!mod_ctrl_only(state)) {
502 ret = TRUE;
503 }
504 break;
505 case GDK_Escape:
506 if (pc->npoints != 0) {
507 // if drawing, cancel, otherwise pass it up for deselecting
508 if (pc->state != SP_PENCIL_CONTEXT_IDLE) {
509 pencil_cancel (pc);
510 ret = TRUE;
511 }
512 }
513 break;
514 case GDK_z:
515 case GDK_Z:
516 if (mod_ctrl_only(state) && pc->npoints != 0) {
517 // if drawing, cancel, otherwise pass it up for undo
518 if (pc->state != SP_PENCIL_CONTEXT_IDLE) {
519 pencil_cancel (pc);
520 ret = TRUE;
521 }
522 }
523 break;
524 case GDK_g:
525 case GDK_G:
526 if (mod_shift_only(state)) {
527 sp_selection_to_guides(SP_EVENT_CONTEXT(pc)->desktop);
528 ret = true;
529 }
530 break;
531 default:
532 break;
533 }
534 return ret;
535 }
537 /**
538 * Reset points and set new starting point.
539 */
540 static void
541 spdc_set_startpoint(SPPencilContext *const pc, NR::Point const p)
542 {
543 pc->npoints = 0;
544 pc->red_curve_is_valid = false;
545 if (in_svg_plane(p)) {
546 pc->p[pc->npoints++] = p;
547 }
548 }
550 /**
551 * Change moving endpoint position.
552 * <ul>
553 * <li>Ctrl constrains to moving to H/V direction, snapping in given direction.
554 * <li>Otherwise we snap freely to whatever attractors are available.
555 * </ul>
556 *
557 * Number of points is (re)set to 2 always, 2nd point is modified.
558 * We change RED curve.
559 */
560 static void
561 spdc_set_endpoint(SPPencilContext *const pc, NR::Point const p)
562 {
563 if (pc->npoints == 0) {
564 return;
565 /* May occur if first point wasn't in SVG plane (e.g. weird w2d transform, perhaps from bad
566 * zoom setting).
567 */
568 }
569 g_return_if_fail( pc->npoints > 0 );
571 pc->red_curve->reset();
572 if ( ( p == pc->p[0] )
573 || !in_svg_plane(p) )
574 {
575 pc->npoints = 1;
576 } else {
577 pc->p[1] = p;
578 pc->npoints = 2;
580 pc->red_curve->moveto(pc->p[0]);
581 pc->red_curve->lineto(pc->p[1]);
582 pc->red_curve_is_valid = true;
584 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), pc->red_curve);
585 }
586 }
588 /**
589 * Finalize addline.
590 *
591 * \todo
592 * fixme: I'd like remove red reset from concat colors (lauris).
593 * Still not sure, how it will make most sense.
594 */
595 static void
596 spdc_finish_endpoint(SPPencilContext *const pc)
597 {
598 if ( ( pc->red_curve->is_empty() )
599 || ( *(pc->red_curve->first_point()) == *(pc->red_curve->second_point()) ) )
600 {
601 pc->red_curve->reset();
602 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), NULL);
603 } else {
604 /* Write curves to object. */
605 spdc_concat_colors_and_flush(pc, FALSE);
606 pc->sa = NULL;
607 pc->ea = NULL;
608 }
609 }
611 static void
612 spdc_add_freehand_point(SPPencilContext *pc, NR::Point p, guint /*state*/)
613 {
614 g_assert( pc->npoints > 0 );
615 g_return_if_fail(unsigned(pc->npoints) < G_N_ELEMENTS(pc->p));
617 if ( ( p != pc->p[ pc->npoints - 1 ] )
618 && in_svg_plane(p) )
619 {
620 pc->p[pc->npoints++] = p;
621 fit_and_split(pc);
622 }
623 }
625 static inline double
626 square(double const x)
627 {
628 return x * x;
629 }
631 static void
632 fit_and_split(SPPencilContext *pc)
633 {
634 g_assert( pc->npoints > 1 );
636 double const tol = prefs_get_double_attribute_limited("tools.freehand.pencil", "tolerance", 10.0, 1.0, 100.0);
637 double const tolerance_sq = 0.02 * square( NR::expansion(pc->desktop->w2d()) * tol)
638 * exp(0.2*tol - 2);
640 NR::Point b[4];
641 g_assert(is_zero(pc->req_tangent)
642 || is_unit_vector(pc->req_tangent));
643 NR::Point const tHatEnd(0, 0);
644 int const n_segs = sp_bezier_fit_cubic_full(b, NULL, pc->p, pc->npoints,
645 pc->req_tangent, tHatEnd, tolerance_sq, 1);
646 if ( n_segs > 0
647 && unsigned(pc->npoints) < G_N_ELEMENTS(pc->p) )
648 {
649 /* Fit and draw and reset state */
650 pc->red_curve->reset();
651 pc->red_curve->moveto(b[0]);
652 pc->red_curve->curveto(b[1], b[2], b[3]);
653 sp_canvas_bpath_set_bpath(SP_CANVAS_BPATH(pc->red_bpath), pc->red_curve);
654 pc->red_curve_is_valid = true;
655 } else {
656 /* Fit and draw and copy last point */
658 g_assert(!pc->red_curve->is_empty());
660 /* Set up direction of next curve. */
661 {
662 Geom::CubicBezier const * last_seg = dynamic_cast<Geom::CubicBezier const *>(pc->red_curve->last_segment());
663 g_assert( last_seg ); // Relevance: validity of (*last_seg)[2]
664 pc->p[0] = last_seg->finalPoint();
665 pc->npoints = 1;
666 NR::Point const req_vec( pc->p[0] - (*last_seg)[2] );
667 pc->req_tangent = ( ( NR::is_zero(req_vec) || !in_svg_plane(req_vec) )
668 ? NR::Point(0, 0)
669 : NR::unit_vector(req_vec) );
670 }
672 pc->green_curve->append_continuous(pc->red_curve, 0.0625);
673 SPCurve *curve = pc->red_curve->copy();
675 /// \todo fixme:
676 SPCanvasItem *cshape = sp_canvas_bpath_new(sp_desktop_sketch(pc->desktop), curve);
677 curve->unref();
678 sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(cshape), pc->green_color, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);
680 pc->green_bpaths = g_slist_prepend(pc->green_bpaths, cshape);
682 pc->red_curve_is_valid = false;
683 }
684 }
687 /*
688 Local Variables:
689 mode:c++
690 c-file-style:"stroustrup"
691 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
692 indent-tabs-mode:nil
693 fill-column:99
694 End:
695 */
696 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :