1 #define __MARKER_C__
3 /*
4 * SVG <marker> implementation
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * Bryce Harrington <bryce@bryceharrington.org>
9 *
10 * Copyright (C) 1999-2003 Lauris Kaplinski
11 * 2004-2006 Bryce Harrington
12 *
13 * Released under GNU GPL, read the file 'COPYING' for more information
14 */
16 #include "config.h"
19 #include "libnr/nr-matrix-fns.h"
20 #include "libnr/nr-matrix-ops.h"
21 #include "libnr/nr-scale-matrix-ops.h"
22 #include "libnr/nr-rotate-fns.h"
23 #include "svg/svg.h"
24 #include "display/nr-arena-group.h"
25 #include "xml/repr.h"
26 #include "attributes.h"
27 #include "marker.h"
28 #include "document.h"
29 #include "document-private.h"
31 struct SPMarkerView {
32 SPMarkerView *next;
33 unsigned int key;
34 unsigned int size;
35 NRArenaItem *items[1];
36 };
38 static void sp_marker_class_init (SPMarkerClass *klass);
39 static void sp_marker_init (SPMarker *marker);
41 static void sp_marker_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
42 static void sp_marker_release (SPObject *object);
43 static void sp_marker_set (SPObject *object, unsigned int key, const gchar *value);
44 static void sp_marker_update (SPObject *object, SPCtx *ctx, guint flags);
45 static Inkscape::XML::Node *sp_marker_write (SPObject *object, Inkscape::XML::Node *repr, guint flags);
47 static NRArenaItem *sp_marker_private_show (SPItem *item, NRArena *arena, unsigned int key, unsigned int flags);
48 static void sp_marker_private_hide (SPItem *item, unsigned int key);
49 static void sp_marker_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags);
50 static void sp_marker_print (SPItem *item, SPPrintContext *ctx);
52 static void sp_marker_view_remove (SPMarker *marker, SPMarkerView *view, unsigned int destroyitems);
54 static SPGroupClass *parent_class;
56 /**
57 * Registers the SPMarker class with Gdk and returns its type number.
58 */
59 GType
60 sp_marker_get_type (void)
61 {
62 static GType type = 0;
63 if (!type) {
64 GTypeInfo info = {
65 sizeof (SPMarkerClass),
66 NULL, NULL,
67 (GClassInitFunc) sp_marker_class_init,
68 NULL, NULL,
69 sizeof (SPMarker),
70 16,
71 (GInstanceInitFunc) sp_marker_init,
72 NULL, /* value_table */
73 };
74 type = g_type_register_static (SP_TYPE_GROUP, "SPMarker", &info, (GTypeFlags)0);
75 }
76 return type;
77 }
79 /**
80 * Initializes a SPMarkerClass object. Establishes the function pointers to the class'
81 * member routines in the class vtable, and sets pointers to parent classes.
82 */
83 static void
84 sp_marker_class_init (SPMarkerClass *klass)
85 {
86 GObjectClass *object_class;
87 SPObjectClass *sp_object_class;
88 SPItemClass *sp_item_class;
90 object_class = G_OBJECT_CLASS (klass);
91 sp_object_class = (SPObjectClass *) klass;
92 sp_item_class = (SPItemClass *) klass;
94 parent_class = (SPGroupClass *)g_type_class_ref (SP_TYPE_GROUP);
96 sp_object_class->build = sp_marker_build;
97 sp_object_class->release = sp_marker_release;
98 sp_object_class->set = sp_marker_set;
99 sp_object_class->update = sp_marker_update;
100 sp_object_class->write = sp_marker_write;
102 sp_item_class->show = sp_marker_private_show;
103 sp_item_class->hide = sp_marker_private_hide;
104 sp_item_class->bbox = sp_marker_bbox;
105 sp_item_class->print = sp_marker_print;
106 }
108 /**
109 * Initializes an SPMarker object. This notes the marker's viewBox is
110 * not set and initializes the marker's c2p identity matrix.
111 */
112 static void
113 sp_marker_init (SPMarker *marker)
114 {
115 marker->viewBox_set = FALSE;
117 nr_matrix_set_identity (&marker->c2p);
118 }
120 /**
121 * Virtual build callback for SPMarker.
122 *
123 * This is to be invoked immediately after creation of an SPMarker. This
124 * method fills an SPMarker object with its SVG attributes, and calls the
125 * parent class' build routine to attach the object to its document and
126 * repr. The result will be creation of the whole document tree.
127 *
128 * \see sp_object_build()
129 */
130 static void
131 sp_marker_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
132 {
133 SPGroup *group;
134 SPMarker *marker;
136 group = (SPGroup *) object;
137 marker = (SPMarker *) object;
139 sp_object_read_attr (object, "markerUnits");
140 sp_object_read_attr (object, "refX");
141 sp_object_read_attr (object, "refY");
142 sp_object_read_attr (object, "markerWidth");
143 sp_object_read_attr (object, "markerHeight");
144 sp_object_read_attr (object, "orient");
145 sp_object_read_attr (object, "viewBox");
146 sp_object_read_attr (object, "preserveAspectRatio");
148 if (((SPObjectClass *) parent_class)->build)
149 ((SPObjectClass *) parent_class)->build (object, document, repr);
150 }
152 /**
153 * Removes, releases and unrefs all children of object
154 *
155 * This is the inverse of sp_marker_build(). It must be invoked as soon
156 * as the marker is removed from the tree, even if it is still referenced
157 * by other objects. It hides and removes any views of the marker, then
158 * calls the parent classes' release function to deregister the object
159 * and release its SPRepr bindings. The result will be the destruction
160 * of the entire document tree.
161 *
162 * \see sp_object_release()
163 */
164 static void
165 sp_marker_release (SPObject *object)
166 {
167 SPMarker *marker;
169 marker = (SPMarker *) object;
171 while (marker->views) {
172 /* Destroy all NRArenaitems etc. */
173 /* Parent class ::hide method */
174 ((SPItemClass *) parent_class)->hide ((SPItem *) marker, marker->views->key);
175 sp_marker_view_remove (marker, marker->views, TRUE);
176 }
178 if (((SPObjectClass *) parent_class)->release)
179 ((SPObjectClass *) parent_class)->release (object);
180 }
182 /**
183 * Sets an attribute, 'key', of a marker object to 'value'. Supported
184 * attributes that can be set with this routine include:
185 *
186 * SP_ATTR_MARKERUNITS
187 * SP_ATTR_REFX
188 * SP_ATTR_REFY
189 * SP_ATTR_MARKERWIDTH
190 * SP_ATTR_MARKERHEIGHT
191 * SP_ATTR_ORIENT
192 * SP_ATTR_VIEWBOX
193 * SP_ATTR_PRESERVEASPECTRATIO
194 */
195 static void
196 sp_marker_set (SPObject *object, unsigned int key, const gchar *value)
197 {
198 SPItem *item;
199 SPMarker *marker;
201 item = SP_ITEM (object);
202 marker = SP_MARKER (object);
204 switch (key) {
205 case SP_ATTR_MARKERUNITS:
206 marker->markerUnits_set = FALSE;
207 marker->markerUnits = SP_MARKER_UNITS_STROKEWIDTH;
208 if (value) {
209 if (!strcmp (value, "strokeWidth")) {
210 marker->markerUnits_set = TRUE;
211 } else if (!strcmp (value, "userSpaceOnUse")) {
212 marker->markerUnits = SP_MARKER_UNITS_USERSPACEONUSE;
213 marker->markerUnits_set = TRUE;
214 }
215 }
216 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);
217 break;
218 case SP_ATTR_REFX:
219 marker->refX.readOrUnset(value);
220 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
221 break;
222 case SP_ATTR_REFY:
223 marker->refY.readOrUnset(value);
224 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
225 break;
226 case SP_ATTR_MARKERWIDTH:
227 marker->markerWidth.readOrUnset(value, SVGLength::NONE, 3.0, 3.0);
228 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
229 break;
230 case SP_ATTR_MARKERHEIGHT:
231 marker->markerHeight.readOrUnset(value, SVGLength::NONE, 3.0, 3.0);
232 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
233 break;
234 case SP_ATTR_ORIENT:
235 marker->orient_set = FALSE;
236 marker->orient_auto = FALSE;
237 marker->orient = 0.0;
238 if (value) {
239 if (!strcmp (value, "auto")) {
240 marker->orient_auto = TRUE;
241 marker->orient_set = TRUE;
242 } else if (sp_svg_number_read_f (value, &marker->orient)) {
243 marker->orient_set = TRUE;
244 }
245 }
246 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
247 break;
248 case SP_ATTR_VIEWBOX:
249 marker->viewBox_set = FALSE;
250 if (value) {
251 double x, y, width, height;
252 char *eptr;
253 /* fixme: We have to take original item affine into account */
254 /* fixme: Think (Lauris) */
255 eptr = (gchar *) value;
256 x = g_ascii_strtod (eptr, &eptr);
257 while (*eptr && ((*eptr == ',') || (*eptr == ' '))) eptr++;
258 y = g_ascii_strtod (eptr, &eptr);
259 while (*eptr && ((*eptr == ',') || (*eptr == ' '))) eptr++;
260 width = g_ascii_strtod (eptr, &eptr);
261 while (*eptr && ((*eptr == ',') || (*eptr == ' '))) eptr++;
262 height = g_ascii_strtod (eptr, &eptr);
263 while (*eptr && ((*eptr == ',') || (*eptr == ' '))) eptr++;
264 if ((width > 0) && (height > 0)) {
265 /* Set viewbox */
266 marker->viewBox.x0 = x;
267 marker->viewBox.y0 = y;
268 marker->viewBox.x1 = x + width;
269 marker->viewBox.y1 = y + height;
270 marker->viewBox_set = TRUE;
271 }
272 }
273 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);
274 break;
275 case SP_ATTR_PRESERVEASPECTRATIO:
276 /* Do setup before, so we can use break to escape */
277 marker->aspect_set = FALSE;
278 marker->aspect_align = SP_ASPECT_NONE;
279 marker->aspect_clip = SP_ASPECT_MEET;
280 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);
281 if (value) {
282 int len;
283 gchar c[256];
284 const gchar *p, *e;
285 unsigned int align, clip;
286 p = value;
287 while (*p && *p == 32) p += 1;
288 if (!*p) break;
289 e = p;
290 while (*e && *e != 32) e += 1;
291 len = e - p;
292 if (len > 8) break;
293 memcpy (c, value, len);
294 c[len] = 0;
295 /* Now the actual part */
296 if (!strcmp (c, "none")) {
297 align = SP_ASPECT_NONE;
298 } else if (!strcmp (c, "xMinYMin")) {
299 align = SP_ASPECT_XMIN_YMIN;
300 } else if (!strcmp (c, "xMidYMin")) {
301 align = SP_ASPECT_XMID_YMIN;
302 } else if (!strcmp (c, "xMaxYMin")) {
303 align = SP_ASPECT_XMAX_YMIN;
304 } else if (!strcmp (c, "xMinYMid")) {
305 align = SP_ASPECT_XMIN_YMID;
306 } else if (!strcmp (c, "xMidYMid")) {
307 align = SP_ASPECT_XMID_YMID;
308 } else if (!strcmp (c, "xMaxYMin")) {
309 align = SP_ASPECT_XMAX_YMID;
310 } else if (!strcmp (c, "xMinYMax")) {
311 align = SP_ASPECT_XMIN_YMAX;
312 } else if (!strcmp (c, "xMidYMax")) {
313 align = SP_ASPECT_XMID_YMAX;
314 } else if (!strcmp (c, "xMaxYMax")) {
315 align = SP_ASPECT_XMAX_YMAX;
316 } else {
317 break;
318 }
319 clip = SP_ASPECT_MEET;
320 while (*e && *e == 32) e += 1;
321 if (e) {
322 if (!strcmp (e, "meet")) {
323 clip = SP_ASPECT_MEET;
324 } else if (!strcmp (e, "slice")) {
325 clip = SP_ASPECT_SLICE;
326 } else {
327 break;
328 }
329 }
330 marker->aspect_set = TRUE;
331 marker->aspect_align = align;
332 marker->aspect_clip = clip;
333 }
334 break;
335 default:
336 if (((SPObjectClass *) parent_class)->set)
337 ((SPObjectClass *) parent_class)->set (object, key, value);
338 break;
339 }
340 }
342 /**
343 * Updates <marker> when its attributes have changed. Takes care of setting up
344 * transformations and viewBoxes.
345 */
346 static void
347 sp_marker_update (SPObject *object, SPCtx *ctx, guint flags)
348 {
349 SPItem *item;
350 SPMarker *marker;
351 SPItemCtx rctx;
352 NRRect *vb;
353 double x, y, width, height;
354 NRMatrix q;
355 SPMarkerView *v;
357 item = SP_ITEM (object);
358 marker = SP_MARKER (object);
360 /* fixme: We have to set up clip here too */
362 /* Copy parent context */
363 rctx.ctx = *ctx;
364 /* Initialize tranformations */
365 rctx.i2doc = NR::identity();
366 rctx.i2vp = NR::identity();
367 /* Set up viewport */
368 rctx.vp.x0 = 0.0;
369 rctx.vp.y0 = 0.0;
370 rctx.vp.x1 = marker->markerWidth.computed;
371 rctx.vp.y1 = marker->markerHeight.computed;
373 /* Start with identity transform */
374 nr_matrix_set_identity (&marker->c2p);
376 /* Viewbox is always present, either implicitly or explicitly */
377 if (marker->viewBox_set) {
378 vb = &marker->viewBox;
379 } else {
380 vb = &rctx.vp;
381 }
382 /* Now set up viewbox transformation */
383 /* Determine actual viewbox in viewport coordinates */
384 if (marker->aspect_align == SP_ASPECT_NONE) {
385 x = 0.0;
386 y = 0.0;
387 width = rctx.vp.x1 - rctx.vp.x0;
388 height = rctx.vp.y1 - rctx.vp.y0;
389 } else {
390 double scalex, scaley, scale;
391 /* Things are getting interesting */
392 scalex = (rctx.vp.x1 - rctx.vp.x0) / (vb->x1 - vb->x0);
393 scaley = (rctx.vp.y1 - rctx.vp.y0) / (vb->y1 - vb->y0);
394 scale = (marker->aspect_clip == SP_ASPECT_MEET) ? MIN (scalex, scaley) : MAX (scalex, scaley);
395 width = (vb->x1 - vb->x0) * scale;
396 height = (vb->y1 - vb->y0) * scale;
397 /* Now place viewbox to requested position */
398 switch (marker->aspect_align) {
399 case SP_ASPECT_XMIN_YMIN:
400 x = 0.0;
401 y = 0.0;
402 break;
403 case SP_ASPECT_XMID_YMIN:
404 x = 0.5 * ((rctx.vp.x1 - rctx.vp.x0) - width);
405 y = 0.0;
406 break;
407 case SP_ASPECT_XMAX_YMIN:
408 x = 1.0 * ((rctx.vp.x1 - rctx.vp.x0) - width);
409 y = 0.0;
410 break;
411 case SP_ASPECT_XMIN_YMID:
412 x = 0.0;
413 y = 0.5 * ((rctx.vp.y1 - rctx.vp.y0) - height);
414 break;
415 case SP_ASPECT_XMID_YMID:
416 x = 0.5 * ((rctx.vp.x1 - rctx.vp.x0) - width);
417 y = 0.5 * ((rctx.vp.y1 - rctx.vp.y0) - height);
418 break;
419 case SP_ASPECT_XMAX_YMID:
420 x = 1.0 * ((rctx.vp.x1 - rctx.vp.x0) - width);
421 y = 0.5 * ((rctx.vp.y1 - rctx.vp.y0) - height);
422 break;
423 case SP_ASPECT_XMIN_YMAX:
424 x = 0.0;
425 y = 1.0 * ((rctx.vp.y1 - rctx.vp.y0) - height);
426 break;
427 case SP_ASPECT_XMID_YMAX:
428 x = 0.5 * ((rctx.vp.x1 - rctx.vp.x0) - width);
429 y = 1.0 * ((rctx.vp.y1 - rctx.vp.y0) - height);
430 break;
431 case SP_ASPECT_XMAX_YMAX:
432 x = 1.0 * ((rctx.vp.x1 - rctx.vp.x0) - width);
433 y = 1.0 * ((rctx.vp.y1 - rctx.vp.y0) - height);
434 break;
435 default:
436 x = 0.0;
437 y = 0.0;
438 break;
439 }
440 }
441 /* Compose additional transformation from scale and position */
442 q.c[0] = width / (vb->x1 - vb->x0);
443 q.c[1] = 0.0;
444 q.c[2] = 0.0;
445 q.c[3] = height / (vb->y1 - vb->y0);
446 q.c[4] = -vb->x0 * q.c[0] + x;
447 q.c[5] = -vb->y0 * q.c[3] + y;
448 /* Append viewbox transformation */
449 nr_matrix_multiply (&marker->c2p, &q, &marker->c2p);
452 /* Append reference translation */
453 /* fixme: lala (Lauris) */
454 nr_matrix_set_translate (&q, -marker->refX.computed, -marker->refY.computed);
455 nr_matrix_multiply (&marker->c2p, &q, &marker->c2p);
457 rctx.i2doc = marker->c2p * rctx.i2doc;
459 /* If viewBox is set reinitialize child viewport */
460 /* Otherwise it already correct */
461 if (marker->viewBox_set) {
462 rctx.vp.x0 = marker->viewBox.x0;
463 rctx.vp.y0 = marker->viewBox.y0;
464 rctx.vp.x1 = marker->viewBox.x1;
465 rctx.vp.y1 = marker->viewBox.y1;
466 rctx.i2vp = NR::identity();
467 }
469 /* And invoke parent method */
470 if (((SPObjectClass *) (parent_class))->update)
471 ((SPObjectClass *) (parent_class))->update (object, (SPCtx *) &rctx, flags);
473 /* As last step set additional transform of arena group */
474 for (v = marker->views; v != NULL; v = v->next) {
475 for (unsigned i = 0 ; i < v->size ; i++) {
476 if (v->items[i]) {
477 nr_arena_group_set_child_transform(NR_ARENA_GROUP(v->items[i]), &marker->c2p);
478 }
479 }
480 }
481 }
483 /**
484 * Writes the object's properties into its repr object.
485 */
486 static Inkscape::XML::Node *
487 sp_marker_write (SPObject *object, Inkscape::XML::Node *repr, guint flags)
488 {
489 SPMarker *marker;
491 marker = SP_MARKER (object);
493 if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
494 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));
495 repr = xml_doc->createElement("svg:marker");
496 }
498 if (marker->markerUnits_set) {
499 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
500 repr->setAttribute("markerUnits", "strokeWidth");
501 } else {
502 repr->setAttribute("markerUnits", "userSpaceOnUse");
503 }
504 } else {
505 repr->setAttribute("markerUnits", NULL);
506 }
507 if (marker->refX._set) {
508 sp_repr_set_svg_double(repr, "refX", marker->refX.computed);
509 } else {
510 repr->setAttribute("refX", NULL);
511 }
512 if (marker->refY._set) {
513 sp_repr_set_svg_double (repr, "refY", marker->refY.computed);
514 } else {
515 repr->setAttribute("refY", NULL);
516 }
517 if (marker->markerWidth._set) {
518 sp_repr_set_svg_double (repr, "markerWidth", marker->markerWidth.computed);
519 } else {
520 repr->setAttribute("markerWidth", NULL);
521 }
522 if (marker->markerHeight._set) {
523 sp_repr_set_svg_double (repr, "markerHeight", marker->markerHeight.computed);
524 } else {
525 repr->setAttribute("markerHeight", NULL);
526 }
527 if (marker->orient_set) {
528 if (marker->orient_auto) {
529 repr->setAttribute("orient", "auto");
530 } else {
531 sp_repr_set_css_double(repr, "orient", marker->orient);
532 }
533 } else {
534 repr->setAttribute("orient", NULL);
535 }
536 /* fixme: */
537 repr->setAttribute("viewBox", object->repr->attribute("viewBox"));
538 repr->setAttribute("preserveAspectRatio", object->repr->attribute("preserveAspectRatio"));
540 if (((SPObjectClass *) (parent_class))->write)
541 ((SPObjectClass *) (parent_class))->write (object, repr, flags);
543 return repr;
544 }
546 /**
547 * This routine is disabled to break propagation.
548 */
549 static NRArenaItem *
550 sp_marker_private_show (SPItem */*item*/, NRArena */*arena*/, unsigned int /*key*/, unsigned int /*flags*/)
551 {
552 /* Break propagation */
553 return NULL;
554 }
556 /**
557 * This routine is disabled to break propagation.
558 */
559 static void
560 sp_marker_private_hide (SPItem */*item*/, unsigned int /*key*/)
561 {
562 /* Break propagation */
563 }
565 /**
566 * This routine is disabled to break propagation.
567 */
568 static void
569 sp_marker_bbox(SPItem const *, NRRect *, NR::Matrix const &, unsigned const)
570 {
571 /* Break propagation */
572 }
574 /**
575 * This routine is disabled to break propagation.
576 */
577 static void
578 sp_marker_print (SPItem */*item*/, SPPrintContext */*ctx*/)
579 {
580 /* Break propagation */
581 }
583 /* fixme: Remove link if zero-sized (Lauris) */
585 /**
586 * Removes any SPMarkerViews that a marker has with a specific key.
587 * Set up the NRArenaItem array's size in the specified SPMarker's SPMarkerView.
588 * This is called from sp_shape_update() for shapes that have markers. It
589 * removes the old view of the marker and establishes a new one, registering
590 * it with the marker's list of views for future updates.
591 *
592 * \param marker Marker to create views in.
593 * \param key Key to give each SPMarkerView.
594 * \param size Number of NRArenaItems to put in the SPMarkerView.
595 */
596 void
597 sp_marker_show_dimension (SPMarker *marker, unsigned int key, unsigned int size)
598 {
599 SPMarkerView *view;
600 unsigned int i;
602 for (view = marker->views; view != NULL; view = view->next) {
603 if (view->key == key) break;
604 }
605 if (view && (view->size != size)) {
606 /* Free old view and allocate new */
607 /* Parent class ::hide method */
608 ((SPItemClass *) parent_class)->hide ((SPItem *) marker, key);
609 sp_marker_view_remove (marker, view, TRUE);
610 view = NULL;
611 }
612 if (!view) {
613 view = (SPMarkerView *)g_malloc (sizeof (SPMarkerView) + (size) * sizeof (NRArenaItem *));
614 for (i = 0; i < size; i++) view->items[i] = NULL;
615 view->next = marker->views;
616 marker->views = view;
617 view->key = key;
618 view->size = size;
619 }
620 }
622 /**
623 * Shows an instance of a marker. This is called during sp_shape_update_marker_view()
624 * show and transform a child item in the arena for all views with the given key.
625 */
626 NRArenaItem *
627 sp_marker_show_instance (SPMarker *marker, NRArenaItem *parent,
628 unsigned int key, unsigned int pos,
629 NR::Matrix const &base, float linewidth)
630 {
631 for (SPMarkerView *v = marker->views; v != NULL; v = v->next) {
632 if (v->key == key) {
633 if (pos >= v->size) {
634 return NULL;
635 }
636 if (!v->items[pos]) {
637 /* Parent class ::show method */
638 v->items[pos] = ((SPItemClass *) parent_class)->show ((SPItem *) marker,
639 parent->arena, key,
640 SP_ITEM_REFERENCE_FLAGS);
641 if (v->items[pos]) {
642 /* fixme: Position (Lauris) */
643 nr_arena_item_add_child (parent, v->items[pos], NULL);
644 /* nr_arena_item_unref (v->items[pos]); */
645 nr_arena_group_set_child_transform((NRArenaGroup *) v->items[pos], &marker->c2p);
646 }
647 }
648 if (v->items[pos]) {
649 NR::Matrix m;
650 if (marker->orient_auto) {
651 m = base;
652 } else {
653 /* fixme: Orient units (Lauris) */
654 m = NR::Matrix(rotate_degrees(marker->orient));
655 m *= get_translation(base);
656 }
657 if (marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
658 m = NR::scale(linewidth) * m;
659 }
661 nr_arena_item_set_transform(v->items[pos], m);
662 }
663 return v->items[pos];
664 }
665 }
667 return NULL;
668 }
670 /**
671 * Hides/removes all views of the given marker that have key 'key'.
672 * This replaces SPItem implementation because we have our own views
673 * \param key SPMarkerView key to hide.
674 */
675 void
676 sp_marker_hide (SPMarker *marker, unsigned int key)
677 {
678 SPMarkerView *v;
680 v = marker->views;
681 while (v != NULL) {
682 SPMarkerView *next;
683 next = v->next;
684 if (v->key == key) {
685 /* Parent class ::hide method */
686 ((SPItemClass *) parent_class)->hide ((SPItem *) marker, key);
687 sp_marker_view_remove (marker, v, TRUE);
688 return;
689 }
690 v = next;
691 }
692 }
694 /**
695 * Removes a given view. Also will destroy sub-items in the view if destroyitems
696 * is set to a non-zero value.
697 */
698 static void
699 sp_marker_view_remove (SPMarker *marker, SPMarkerView *view, unsigned int destroyitems)
700 {
701 unsigned int i;
702 if (view == marker->views) {
703 marker->views = view->next;
704 } else {
705 SPMarkerView *v;
706 for (v = marker->views; v->next != view; v = v->next) if (!v->next) return;
707 v->next = view->next;
708 }
709 if (destroyitems) {
710 for (i = 0; i < view->size; i++) {
711 /* We have to walk through the whole array because there may be hidden items */
712 if (view->items[i]) nr_arena_item_unref (view->items[i]);
713 }
714 }
715 g_free (view);
716 }
718 const gchar *
719 generate_marker (GSList *reprs, NR::Rect bounds, SPDocument *document, NR::Matrix /*transform*/, NR::Matrix move)
720 {
721 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(document);
722 Inkscape::XML::Node *defsrepr = SP_OBJECT_REPR (SP_DOCUMENT_DEFS (document));
724 Inkscape::XML::Node *repr = xml_doc->createElement("svg:marker");
725 repr->setAttribute("markerUnits", "userSpaceOnUse");
726 sp_repr_set_svg_double(repr, "markerWidth", bounds.extent(NR::X));
727 sp_repr_set_svg_double(repr, "markerHeight", bounds.extent(NR::Y));
729 repr->setAttribute("orient", "auto");
732 defsrepr->appendChild(repr);
733 const gchar *mark_id = repr->attribute("id");
734 SPObject *mark_object = document->getObjectById(mark_id);
736 for (GSList *i = reprs; i != NULL; i = i->next) {
737 Inkscape::XML::Node *node = (Inkscape::XML::Node *)(i->data);
738 SPItem *copy = SP_ITEM(mark_object->appendChildRepr(node));
740 NR::Matrix dup_transform;
741 if (!sp_svg_transform_read (node->attribute("transform"), &dup_transform))
742 dup_transform = NR::identity();
743 dup_transform *= move;
745 sp_item_write_transform(copy, SP_OBJECT_REPR(copy), dup_transform);
746 }
748 Inkscape::GC::release(repr);
749 return mark_id;
750 }