1 #define __SP_PATTERN_C__
3 /*
4 * SVG <pattern> implementation
5 *
6 * Author:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * bulia byak <buliabyak@users.sf.net>
9 *
10 * Copyright (C) 2002 Lauris Kaplinski
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
15 #include "config.h"
17 #include <libnr/nr-matrix-ops.h>
18 #include "libnr/nr-matrix-fns.h"
19 #include <libnr/nr-translate-matrix-ops.h>
20 #include "macros.h"
21 #include "svg/svg.h"
22 #include "display/nr-arena.h"
23 #include "display/nr-arena-group.h"
24 #include "attributes.h"
25 #include "document-private.h"
26 #include "uri.h"
27 #include "sp-pattern.h"
28 #include "xml/repr.h"
30 #include <sigc++/functors/ptr_fun.h>
31 #include <sigc++/adaptors/bind.h>
33 /*
34 * Pattern
35 */
37 class SPPatPainter;
39 struct SPPatPainter {
40 SPPainter painter;
41 SPPattern *pat;
43 NRMatrix ps2px;
44 NRMatrix px2ps;
45 NRMatrix pcs2px;
47 NRArena *arena;
48 unsigned int dkey;
49 NRArenaItem *root;
51 bool use_cached_tile;
52 NRMatrix ca2pa;
53 NRMatrix pa2ca;
54 NRRectL cached_bbox;
55 NRPixBlock cached_tile;
56 };
58 static void sp_pattern_class_init (SPPatternClass *klass);
59 static void sp_pattern_init (SPPattern *gr);
61 static void sp_pattern_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
62 static void sp_pattern_release (SPObject *object);
63 static void sp_pattern_set (SPObject *object, unsigned int key, const gchar *value);
64 static void sp_pattern_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref);
65 static void sp_pattern_update (SPObject *object, SPCtx *ctx, unsigned int flags);
66 static void sp_pattern_modified (SPObject *object, unsigned int flags);
68 static void pattern_ref_changed(SPObject *old_ref, SPObject *ref, SPPattern *pat);
69 static void pattern_ref_modified (SPObject *ref, guint flags, SPPattern *pattern);
71 static SPPainter *sp_pattern_painter_new (SPPaintServer *ps, NR::Matrix const &full_transform, NR::Matrix const &parent_transform, const NRRect *bbox);
72 static void sp_pattern_painter_free (SPPaintServer *ps, SPPainter *painter);
74 static SPPaintServerClass * pattern_parent_class;
76 GType
77 sp_pattern_get_type (void)
78 {
79 static GType pattern_type = 0;
80 if (!pattern_type) {
81 GTypeInfo pattern_info = {
82 sizeof (SPPatternClass),
83 NULL, /* base_init */
84 NULL, /* base_finalize */
85 (GClassInitFunc) sp_pattern_class_init,
86 NULL, /* class_finalize */
87 NULL, /* class_data */
88 sizeof (SPPattern),
89 16, /* n_preallocs */
90 (GInstanceInitFunc) sp_pattern_init,
91 NULL, /* value_table */
92 };
93 pattern_type = g_type_register_static (SP_TYPE_PAINT_SERVER, "SPPattern", &pattern_info, (GTypeFlags)0);
94 }
95 return pattern_type;
96 }
98 static void
99 sp_pattern_class_init (SPPatternClass *klass)
100 {
101 SPObjectClass *sp_object_class;
102 SPPaintServerClass *ps_class;
104 sp_object_class = (SPObjectClass *) klass;
105 ps_class = (SPPaintServerClass *) klass;
107 pattern_parent_class = (SPPaintServerClass*)g_type_class_ref (SP_TYPE_PAINT_SERVER);
109 sp_object_class->build = sp_pattern_build;
110 sp_object_class->release = sp_pattern_release;
111 sp_object_class->set = sp_pattern_set;
112 sp_object_class->child_added = sp_pattern_child_added;
113 sp_object_class->update = sp_pattern_update;
114 sp_object_class->modified = sp_pattern_modified;
116 // do we need _write? seems to work without it
118 ps_class->painter_new = sp_pattern_painter_new;
119 ps_class->painter_free = sp_pattern_painter_free;
120 }
122 static void
123 sp_pattern_init (SPPattern *pat)
124 {
125 pat->ref = new SPPatternReference(SP_OBJECT(pat));
126 pat->ref->changedSignal().connect(sigc::bind(sigc::ptr_fun(pattern_ref_changed), pat));
128 pat->patternUnits = SP_PATTERN_UNITS_OBJECTBOUNDINGBOX;
129 pat->patternUnits_set = FALSE;
131 pat->patternContentUnits = SP_PATTERN_UNITS_USERSPACEONUSE;
132 pat->patternContentUnits_set = FALSE;
134 pat->patternTransform = NR::identity();
135 pat->patternTransform_set = FALSE;
137 pat->x.unset();
138 pat->y.unset();
139 pat->width.unset();
140 pat->height.unset();
142 pat->viewBox_set = FALSE;
144 new (&pat->modified_connection) sigc::connection();
145 }
147 static void
148 sp_pattern_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
149 {
150 if (((SPObjectClass *) pattern_parent_class)->build)
151 (* ((SPObjectClass *) pattern_parent_class)->build) (object, document, repr);
153 sp_object_read_attr (object, "patternUnits");
154 sp_object_read_attr (object, "patternContentUnits");
155 sp_object_read_attr (object, "patternTransform");
156 sp_object_read_attr (object, "x");
157 sp_object_read_attr (object, "y");
158 sp_object_read_attr (object, "width");
159 sp_object_read_attr (object, "height");
160 sp_object_read_attr (object, "viewBox");
161 sp_object_read_attr (object, "xlink:href");
163 /* Register ourselves */
164 sp_document_add_resource (document, "pattern", object);
165 }
167 static void
168 sp_pattern_release (SPObject *object)
169 {
170 SPPattern *pat;
172 pat = (SPPattern *) object;
174 if (SP_OBJECT_DOCUMENT (object)) {
175 /* Unregister ourselves */
176 sp_document_remove_resource (SP_OBJECT_DOCUMENT (object), "pattern", SP_OBJECT (object));
177 }
179 if (pat->ref) {
180 pat->modified_connection.disconnect();
181 pat->ref->detach();
182 delete pat->ref;
183 pat->ref = NULL;
184 }
186 pat->modified_connection.~connection();
188 if (((SPObjectClass *) pattern_parent_class)->release)
189 ((SPObjectClass *) pattern_parent_class)->release (object);
190 }
192 static void
193 sp_pattern_set (SPObject *object, unsigned int key, const gchar *value)
194 {
195 SPPattern *pat = SP_PATTERN (object);
197 switch (key) {
198 case SP_ATTR_PATTERNUNITS:
199 if (value) {
200 if (!strcmp (value, "userSpaceOnUse")) {
201 pat->patternUnits = SP_PATTERN_UNITS_USERSPACEONUSE;
202 } else {
203 pat->patternUnits = SP_PATTERN_UNITS_OBJECTBOUNDINGBOX;
204 }
205 pat->patternUnits_set = TRUE;
206 } else {
207 pat->patternUnits_set = FALSE;
208 }
209 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
210 break;
211 case SP_ATTR_PATTERNCONTENTUNITS:
212 if (value) {
213 if (!strcmp (value, "userSpaceOnUse")) {
214 pat->patternContentUnits = SP_PATTERN_UNITS_USERSPACEONUSE;
215 } else {
216 pat->patternContentUnits = SP_PATTERN_UNITS_OBJECTBOUNDINGBOX;
217 }
218 pat->patternContentUnits_set = TRUE;
219 } else {
220 pat->patternContentUnits_set = FALSE;
221 }
222 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
223 break;
224 case SP_ATTR_PATTERNTRANSFORM: {
225 NR::Matrix t;
226 if (value && sp_svg_transform_read (value, &t)) {
227 pat->patternTransform = t;
228 pat->patternTransform_set = TRUE;
229 } else {
230 pat->patternTransform = NR::identity();
231 pat->patternTransform_set = FALSE;
232 }
233 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
234 break;
235 }
236 case SP_ATTR_X:
237 pat->x.readOrUnset(value);
238 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
239 break;
240 case SP_ATTR_Y:
241 pat->y.readOrUnset(value);
242 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
243 break;
244 case SP_ATTR_WIDTH:
245 pat->width.readOrUnset(value);
246 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
247 break;
248 case SP_ATTR_HEIGHT:
249 pat->height.readOrUnset(value);
250 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
251 break;
252 case SP_ATTR_VIEWBOX: {
253 /* fixme: Think (Lauris) */
254 double x, y, width, height;
255 char *eptr;
257 if (value) {
258 eptr = (gchar *) value;
259 x = g_ascii_strtod (eptr, &eptr);
260 while (*eptr && ((*eptr == ',') || (*eptr == ' '))) eptr++;
261 y = g_ascii_strtod (eptr, &eptr);
262 while (*eptr && ((*eptr == ',') || (*eptr == ' '))) eptr++;
263 width = g_ascii_strtod (eptr, &eptr);
264 while (*eptr && ((*eptr == ',') || (*eptr == ' '))) eptr++;
265 height = g_ascii_strtod (eptr, &eptr);
266 while (*eptr && ((*eptr == ',') || (*eptr == ' '))) eptr++;
267 if ((width > 0) && (height > 0)) {
268 pat->viewBox.x0 = x;
269 pat->viewBox.y0 = y;
270 pat->viewBox.x1 = x + width;
271 pat->viewBox.y1 = y + height;
272 pat->viewBox_set = TRUE;
273 } else {
274 pat->viewBox_set = FALSE;
275 }
276 } else {
277 pat->viewBox_set = FALSE;
278 }
279 object->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG);
280 break;
281 }
282 case SP_ATTR_XLINK_HREF:
283 if ( value && pat->href && ( strcmp(value, pat->href) == 0 ) ) {
284 /* Href unchanged, do nothing. */
285 } else {
286 g_free(pat->href);
287 pat->href = NULL;
288 if (value) {
289 // First, set the href field; it's only used in the "unchanged" check above.
290 pat->href = g_strdup(value);
291 // Now do the attaching, which emits the changed signal.
292 if (value) {
293 try {
294 pat->ref->attach(Inkscape::URI(value));
295 } catch (Inkscape::BadURIException &e) {
296 g_warning("%s", e.what());
297 pat->ref->detach();
298 }
299 } else {
300 pat->ref->detach();
301 }
302 }
303 }
304 break;
305 default:
306 if (((SPObjectClass *) pattern_parent_class)->set)
307 ((SPObjectClass *) pattern_parent_class)->set (object, key, value);
308 break;
309 }
310 }
312 static void
313 sp_pattern_child_added (SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
314 {
315 SPPattern *pat = SP_PATTERN (object);
317 if (((SPObjectClass *) (pattern_parent_class))->child_added)
318 (* ((SPObjectClass *) (pattern_parent_class))->child_added) (object, child, ref);
320 SPObject *ochild = sp_object_get_child_by_repr(object, child);
321 if (SP_IS_ITEM (ochild)) {
323 SPPaintServer *ps = SP_PAINT_SERVER (pat);
324 unsigned position = sp_item_pos_in_parent(SP_ITEM(ochild));
326 for (SPPainter *p = ps->painters; p != NULL; p = p->next) {
328 SPPatPainter *pp = (SPPatPainter *) p;
329 NRArenaItem *ai = sp_item_invoke_show (SP_ITEM (ochild), pp->arena, pp->dkey, SP_ITEM_REFERENCE_FLAGS);
331 if (ai) {
332 nr_arena_item_add_child (pp->root, ai, NULL);
333 nr_arena_item_set_order (ai, position);
334 nr_arena_item_unref (ai);
335 }
336 }
337 }
338 }
340 /* TODO: do we need a ::remove_child handler? */
342 /* fixme: We need ::order_changed handler too (Lauris) */
344 GSList *
345 pattern_getchildren (SPPattern *pat)
346 {
347 GSList *l = NULL;
349 for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
350 if (sp_object_first_child(SP_OBJECT(pat_i))) { // find the first one with children
351 for (SPObject *child = sp_object_first_child(SP_OBJECT (pat)) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
352 l = g_slist_prepend (l, child);
353 }
354 break; // do not go further up the chain if children are found
355 }
356 }
358 return l;
359 }
361 static void
362 sp_pattern_update (SPObject *object, SPCtx *ctx, unsigned int flags)
363 {
364 SPPattern *pat = SP_PATTERN (object);
366 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
367 flags &= SP_OBJECT_MODIFIED_CASCADE;
369 GSList *l = pattern_getchildren (pat);
370 l = g_slist_reverse (l);
372 while (l) {
373 SPObject *child = SP_OBJECT (l->data);
374 sp_object_ref (child, NULL);
375 l = g_slist_remove (l, child);
376 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
377 child->updateDisplay(ctx, flags);
378 }
379 sp_object_unref (child, NULL);
380 }
381 }
383 static void
384 sp_pattern_modified (SPObject *object, guint flags)
385 {
386 SPPattern *pat = SP_PATTERN (object);
388 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
389 flags &= SP_OBJECT_MODIFIED_CASCADE;
391 GSList *l = pattern_getchildren (pat);
392 l = g_slist_reverse (l);
394 while (l) {
395 SPObject *child = SP_OBJECT (l->data);
396 sp_object_ref (child, NULL);
397 l = g_slist_remove (l, child);
398 if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
399 child->emitModified(flags);
400 }
401 sp_object_unref (child, NULL);
402 }
403 }
405 /**
406 Gets called when the pattern is reattached to another <pattern>
407 */
408 static void
409 pattern_ref_changed(SPObject *old_ref, SPObject *ref, SPPattern *pat)
410 {
411 if (old_ref) {
412 pat->modified_connection.disconnect();
413 }
414 if (SP_IS_PATTERN (ref)) {
415 pat->modified_connection = ref->connectModified(sigc::bind<2>(sigc::ptr_fun(&pattern_ref_modified), pat));
416 }
418 pattern_ref_modified (ref, 0, pat);
419 }
421 /**
422 Gets called when the referenced <pattern> is changed
423 */
424 static void
425 pattern_ref_modified (SPObject *ref, guint flags, SPPattern *pattern)
426 {
427 if (SP_IS_OBJECT (pattern))
428 SP_OBJECT (pattern)->requestModified(SP_OBJECT_MODIFIED_FLAG);
429 }
431 guint
432 pattern_users (SPPattern *pattern)
433 {
434 return SP_OBJECT (pattern)->hrefcount;
435 }
437 SPPattern *
438 pattern_chain (SPPattern *pattern)
439 {
440 SPDocument *document = SP_OBJECT_DOCUMENT (pattern);
441 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(document);
442 Inkscape::XML::Node *defsrepr = SP_OBJECT_REPR (SP_DOCUMENT_DEFS (document));
444 Inkscape::XML::Node *repr = xml_doc->createElement("svg:pattern");
445 repr->setAttribute("inkscape:collect", "always");
446 gchar *parent_ref = g_strconcat ("#", SP_OBJECT_REPR(pattern)->attribute("id"), NULL);
447 repr->setAttribute("xlink:href", parent_ref);
448 g_free (parent_ref);
450 defsrepr->addChild(repr, NULL);
451 const gchar *child_id = repr->attribute("id");
452 SPObject *child = document->getObjectById(child_id);
453 g_assert (SP_IS_PATTERN (child));
455 return SP_PATTERN (child);
456 }
458 SPPattern *
459 sp_pattern_clone_if_necessary (SPItem *item, SPPattern *pattern, const gchar *property)
460 {
461 if (pattern_users(pattern) > 1) {
462 pattern = pattern_chain (pattern);
463 gchar *href = g_strconcat ("url(#", SP_OBJECT_REPR (pattern)->attribute("id"), ")", NULL);
465 SPCSSAttr *css = sp_repr_css_attr_new ();
466 sp_repr_css_set_property (css, property, href);
467 sp_repr_css_change_recursive (SP_OBJECT_REPR (item), css, "style");
468 }
469 return pattern;
470 }
472 void
473 sp_pattern_transform_multiply (SPPattern *pattern, NR::Matrix postmul, bool set)
474 {
475 // this formula is for a different interpretation of pattern transforms as described in (*) in sp-pattern.cpp
476 // for it to work, we also need sp_object_read_attr (SP_OBJECT (item), "transform");
477 //pattern->patternTransform = premul * item->transform * pattern->patternTransform * item->transform.inverse() * postmul;
479 // otherwise the formula is much simpler
480 if (set) {
481 pattern->patternTransform = postmul;
482 } else {
483 pattern->patternTransform = pattern_patternTransform(pattern) * postmul;
484 }
485 pattern->patternTransform_set = TRUE;
487 gchar *c=sp_svg_transform_write(pattern->patternTransform);
488 SP_OBJECT_REPR(pattern)->setAttribute("patternTransform", c);
489 g_free(c);
490 }
492 const gchar *
493 pattern_tile (GSList *reprs, NR::Rect bounds, SPDocument *document, NR::Matrix transform, NR::Matrix move)
494 {
495 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(document);
496 Inkscape::XML::Node *defsrepr = SP_OBJECT_REPR (SP_DOCUMENT_DEFS (document));
498 Inkscape::XML::Node *repr = xml_doc->createElement("svg:pattern");
499 repr->setAttribute("patternUnits", "userSpaceOnUse");
500 sp_repr_set_svg_double(repr, "width", bounds.extent(NR::X));
501 sp_repr_set_svg_double(repr, "height", bounds.extent(NR::Y));
503 gchar *t=sp_svg_transform_write(transform);
504 repr->setAttribute("patternTransform", t);
505 g_free(t);
507 defsrepr->appendChild(repr);
508 const gchar *pat_id = repr->attribute("id");
509 SPObject *pat_object = document->getObjectById(pat_id);
511 for (GSList *i = reprs; i != NULL; i = i->next) {
512 Inkscape::XML::Node *node = (Inkscape::XML::Node *)(i->data);
513 SPItem *copy = SP_ITEM(pat_object->appendChildRepr(node));
515 NR::Matrix dup_transform;
516 if (!sp_svg_transform_read (node->attribute("transform"), &dup_transform))
517 dup_transform = NR::identity();
518 dup_transform *= move;
520 sp_item_write_transform(copy, SP_OBJECT_REPR(copy), dup_transform);
521 }
523 Inkscape::GC::release(repr);
524 return pat_id;
525 }
527 SPPattern *
528 pattern_getroot (SPPattern *pat)
529 {
530 for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
531 if (sp_object_first_child(SP_OBJECT(pat_i))) { // find the first one with children
532 return pat_i;
533 }
534 }
535 return pat; // document is broken, we can't get to root; but at least we can return pat which is supposedly a valid pattern
536 }
540 // Access functions that look up fields up the chain of referenced patterns and return the first one which is set
542 guint pattern_patternUnits (SPPattern *pat)
543 {
544 for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
545 if (pat_i->patternUnits_set)
546 return pat_i->patternUnits;
547 }
548 return pat->patternUnits;
549 }
551 guint pattern_patternContentUnits (SPPattern *pat)
552 {
553 for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
554 if (pat_i->patternContentUnits_set)
555 return pat_i->patternContentUnits;
556 }
557 return pat->patternContentUnits;
558 }
560 NR::Matrix const &pattern_patternTransform(SPPattern const *pat)
561 {
562 for (SPPattern const *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
563 if (pat_i->patternTransform_set)
564 return pat_i->patternTransform;
565 }
566 return pat->patternTransform;
567 }
569 gdouble pattern_x (SPPattern *pat)
570 {
571 for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
572 if (pat_i->x._set)
573 return pat_i->x.computed;
574 }
575 return 0;
576 }
578 gdouble pattern_y (SPPattern *pat)
579 {
580 for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
581 if (pat_i->y._set)
582 return pat_i->y.computed;
583 }
584 return 0;
585 }
587 gdouble pattern_width (SPPattern *pat)
588 {
589 for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
590 if (pat_i->width._set)
591 return pat_i->width.computed;
592 }
593 return 0;
594 }
596 gdouble pattern_height (SPPattern *pat)
597 {
598 for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
599 if (pat_i->height._set)
600 return pat_i->height.computed;
601 }
602 return 0;
603 }
605 NRRect *pattern_viewBox (SPPattern *pat)
606 {
607 for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
608 if (pat_i->viewBox_set)
609 return &(pat_i->viewBox);
610 }
611 return &(pat->viewBox);
612 }
614 bool pattern_hasItemChildren (SPPattern *pat)
615 {
616 for (SPObject *child = sp_object_first_child(SP_OBJECT(pat)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
617 if (SP_IS_ITEM (child)) {
618 return true;
619 }
620 }
621 return false;
622 }
626 /* Painter */
628 static void sp_pat_fill (SPPainter *painter, NRPixBlock *pb);
630 /**
631 Creates a painter (i.e. the thing that does actual filling at the given zoom).
632 See (*) below for why the parent_transform may be necessary.
633 */
634 static SPPainter *
635 sp_pattern_painter_new (SPPaintServer *ps, NR::Matrix const &full_transform, NR::Matrix const &parent_transform, const NRRect *bbox)
636 {
637 SPPattern *pat = SP_PATTERN (ps);
638 SPPatPainter *pp = g_new (SPPatPainter, 1);
640 pp->painter.type = SP_PAINTER_IND;
641 pp->painter.fill = sp_pat_fill;
643 pp->pat = pat;
645 if (pattern_patternUnits (pat) == SP_PATTERN_UNITS_OBJECTBOUNDINGBOX) {
646 /* BBox to user coordinate system */
647 NR::Matrix bbox2user (bbox->x1 - bbox->x0, 0.0, 0.0, bbox->y1 - bbox->y0, bbox->x0, bbox->y0);
649 // the final patternTransform, taking into account bbox
650 NR::Matrix const ps2user(pattern_patternTransform(pat) * bbox2user);
652 // see (*) comment below
653 NR::Matrix ps2px = ps2user * full_transform;
655 ps2px.copyto (&pp->ps2px);
657 } else {
658 /* Problem: What to do, if we have mixed lengths and percentages? */
659 /* Currently we do ignore percentages at all, but that is not good (lauris) */
661 /* fixme: We may try to normalize here too, look at linearGradient (Lauris) */
663 // (*) The spec says, "This additional transformation matrix [patternTransform] is
664 // post-multiplied to (i.e., inserted to the right of) any previously defined
665 // transformations, including the implicit transformation necessary to convert from
666 // object bounding box units to user space." To me, this means that the order should be:
667 // item_transform * patternTransform * parent_transform
668 // However both Batik and Adobe plugin use:
669 // patternTransform * item_transform * parent_transform
670 // So here I comply with the majority opinion, but leave my interpretation commented out below.
671 // (To get item_transform, I subtract parent from full.)
673 //NR::Matrix ps2px = (full_transform / parent_transform) * pattern_patternTransform(pat) * parent_transform;
674 NR::Matrix ps2px = pattern_patternTransform(pat) * full_transform;
676 ps2px.copyto (&pp->ps2px);
677 }
679 nr_matrix_invert (&pp->px2ps, &pp->ps2px);
681 if (pat->viewBox_set) {
682 gdouble tmp_x = (pattern_viewBox(pat)->x1 - pattern_viewBox(pat)->x0) / pattern_width (pat);
683 gdouble tmp_y = (pattern_viewBox(pat)->y1 - pattern_viewBox(pat)->y0) / pattern_height (pat);
685 // FIXME: preserveAspectRatio must be taken into account here too!
686 NR::Matrix vb2ps (tmp_x, 0.0, 0.0, tmp_y, pattern_x(pat) - pattern_viewBox(pat)->x0, pattern_y(pat) - pattern_viewBox(pat)->y0);
688 NR::Matrix vb2us = vb2ps * pattern_patternTransform(pat);
690 // see (*)
691 NR::Matrix pcs2px = vb2us * full_transform;
693 pcs2px.copyto (&pp->pcs2px);
694 } else {
695 NR::Matrix pcs2px;
697 /* No viewbox, have to parse units */
698 if (pattern_patternContentUnits (pat) == SP_PATTERN_UNITS_OBJECTBOUNDINGBOX) {
699 /* BBox to user coordinate system */
700 NR::Matrix bbox2user (bbox->x1 - bbox->x0, 0.0, 0.0, bbox->y1 - bbox->y0, bbox->x0, bbox->y0);
702 NR::Matrix pcs2user = pattern_patternTransform(pat) * bbox2user;
704 // see (*)
705 pcs2px = pcs2user * full_transform;
706 } else {
707 // see (*)
708 //pcs2px = (full_transform / parent_transform) * pattern_patternTransform(pat) * parent_transform;
709 pcs2px = pattern_patternTransform(pat) * full_transform;
710 }
712 pcs2px = NR::translate (pattern_x (pat), pattern_y (pat)) * pcs2px;
714 pcs2px.copyto (&pp->pcs2px);
715 }
717 /* Create arena */
718 pp->arena = NRArena::create();
720 pp->dkey = sp_item_display_key_new (1);
722 /* Create group */
723 pp->root = NRArenaGroup::create(pp->arena);
725 /* Show items */
726 for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
727 if (pat_i && SP_IS_OBJECT (pat_i) && pattern_hasItemChildren(pat_i)) { // find the first one with item children
728 for (SPObject *child = sp_object_first_child(SP_OBJECT(pat_i)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
729 if (SP_IS_ITEM (child)) {
730 NRArenaItem *cai;
731 cai = sp_item_invoke_show (SP_ITEM (child), pp->arena, pp->dkey, SP_ITEM_REFERENCE_FLAGS);
732 nr_arena_item_append_child (pp->root, cai);
733 nr_arena_item_unref (cai);
734 }
735 }
736 break; // do not go further up the chain if children are found
737 }
738 }
740 {
741 NRRect one_tile,tr_tile;
742 one_tile.x0=pattern_x(pp->pat);
743 one_tile.y0=pattern_y(pp->pat);
744 one_tile.x1=one_tile.x0+pattern_width (pp->pat);
745 one_tile.y1=one_tile.y0+pattern_height (pp->pat);
746 nr_rect_d_matrix_transform (&tr_tile, &one_tile, &pp->ps2px);
747 int tr_width=(int)ceil(1.3*(tr_tile.x1-tr_tile.x0));
748 int tr_height=(int)ceil(1.3*(tr_tile.y1-tr_tile.y0));
749 // if ( tr_width < 10000 && tr_height < 10000 && tr_width*tr_height < 1000000 ) {
750 pp->use_cached_tile=false;//true;
751 if ( tr_width > 1000 ) tr_width=1000;
752 if ( tr_height > 1000 ) tr_height=1000;
753 pp->cached_bbox.x0=0;
754 pp->cached_bbox.y0=0;
755 pp->cached_bbox.x1=tr_width;
756 pp->cached_bbox.y1=tr_height;
758 if (pp->use_cached_tile) {
759 nr_pixblock_setup (&pp->cached_tile,NR_PIXBLOCK_MODE_R8G8B8A8N, pp->cached_bbox.x0, pp->cached_bbox.y0, pp->cached_bbox.x1, pp->cached_bbox.y1,TRUE);
760 }
762 pp->pa2ca.c[0]=((double)tr_width)/(one_tile.x1-one_tile.x0);
763 pp->pa2ca.c[1]=0;
764 pp->pa2ca.c[2]=0;
765 pp->pa2ca.c[3]=((double)tr_height)/(one_tile.y1-one_tile.y0);
766 pp->pa2ca.c[4]=-one_tile.x0*pp->pa2ca.c[0];
767 pp->pa2ca.c[5]=-one_tile.y0*pp->pa2ca.c[1];
768 pp->ca2pa.c[0]=(one_tile.x1-one_tile.x0)/((double)tr_width);
769 pp->ca2pa.c[1]=0;
770 pp->ca2pa.c[2]=0;
771 pp->ca2pa.c[3]=(one_tile.y1-one_tile.y0)/((double)tr_height);
772 pp->ca2pa.c[4]=one_tile.x0;
773 pp->ca2pa.c[5]=one_tile.y0;
774 // } else {
775 // pp->use_cached_tile=false;
776 // }
777 }
779 NRGC gc(NULL);
780 if ( pp->use_cached_tile ) {
781 gc.transform=pp->pa2ca;
782 } else {
783 gc.transform = pp->pcs2px;
784 }
785 nr_arena_item_invoke_update (pp->root, NULL, &gc, NR_ARENA_ITEM_STATE_ALL, NR_ARENA_ITEM_STATE_ALL);
786 if ( pp->use_cached_tile ) {
787 nr_arena_item_invoke_render (NULL, pp->root, &pp->cached_bbox, &pp->cached_tile, 0);
788 } else {
789 // nothing to do now
790 }
792 return (SPPainter *) pp;
793 }
795 static void
796 sp_pattern_painter_free (SPPaintServer *ps, SPPainter *painter)
797 {
798 SPPatPainter *pp = (SPPatPainter *) painter;
799 SPPattern *pat = pp->pat;
801 for (SPPattern *pat_i = pat; pat_i != NULL; pat_i = pat_i->ref ? pat_i->ref->getObject() : NULL) {
802 if (pat_i && SP_IS_OBJECT (pat_i) && pattern_hasItemChildren(pat_i)) { // find the first one with item children
803 for (SPObject *child = sp_object_first_child(SP_OBJECT(pat_i)) ; child != NULL; child = SP_OBJECT_NEXT(child) ) {
804 if (SP_IS_ITEM (child)) {
805 sp_item_invoke_hide (SP_ITEM (child), pp->dkey);
806 }
807 }
808 break; // do not go further up the chain if children are found
809 }
810 }
811 if ( pp->use_cached_tile ) nr_pixblock_release(&pp->cached_tile);
812 g_free (pp);
813 }
815 void
816 get_cached_tile_pixel(SPPatPainter* pp,double x,double y,unsigned char &r,unsigned char &g,unsigned char &b,unsigned char &a)
817 {
818 int ca_h=(int)floor(x);
819 int ca_v=(int)floor(y);
820 int r_x=(int)floor(16*(x-floor(x)));
821 int r_y=(int)floor(16*(y-floor(y)));
822 unsigned int tl_m=(16-r_x)*(16-r_y);
823 unsigned int bl_m=(16-r_x)*r_y;
824 unsigned int tr_m=r_x*(16-r_y);
825 unsigned int br_m=r_x*r_y;
826 int cb_h=ca_h+1;
827 int cb_v=ca_v+1;
828 if ( cb_h >= pp->cached_bbox.x1 ) cb_h=0;
829 if ( cb_v >= pp->cached_bbox.y1 ) cb_v=0;
831 unsigned char* tlx=NR_PIXBLOCK_PX(&pp->cached_tile)+(ca_v*pp->cached_tile.rs)+4*ca_h;
832 unsigned char* trx=NR_PIXBLOCK_PX(&pp->cached_tile)+(ca_v*pp->cached_tile.rs)+4*cb_h;
833 unsigned char* blx=NR_PIXBLOCK_PX(&pp->cached_tile)+(cb_v*pp->cached_tile.rs)+4*ca_h;
834 unsigned char* brx=NR_PIXBLOCK_PX(&pp->cached_tile)+(cb_v*pp->cached_tile.rs)+4*cb_h;
836 unsigned int tl_c=tlx[0];
837 unsigned int tr_c=trx[0];
838 unsigned int bl_c=blx[0];
839 unsigned int br_c=brx[0];
840 unsigned int f_c=(tl_m*tl_c+tr_m*tr_c+bl_m*bl_c+br_m*br_c)>>8;
841 r=f_c;
842 tl_c=tlx[1];
843 tr_c=trx[1];
844 bl_c=blx[1];
845 br_c=brx[1];
846 f_c=(tl_m*tl_c+tr_m*tr_c+bl_m*bl_c+br_m*br_c)>>8;
847 g=f_c;
848 tl_c=tlx[2];
849 tr_c=trx[2];
850 bl_c=blx[2];
851 br_c=brx[2];
852 f_c=(tl_m*tl_c+tr_m*tr_c+bl_m*bl_c+br_m*br_c)>>8;
853 b=f_c;
854 tl_c=tlx[3];
855 tr_c=trx[3];
856 bl_c=blx[3];
857 br_c=brx[3];
858 f_c=(tl_m*tl_c+tr_m*tr_c+bl_m*bl_c+br_m*br_c)>>8;
859 a=f_c;
860 }
862 static void
863 sp_pat_fill (SPPainter *painter, NRPixBlock *pb)
864 {
865 SPPatPainter *pp;
866 NRRect ba, psa;
867 NRRectL area;
868 double x, y;
870 pp = (SPPatPainter *) painter;
872 if (pattern_width (pp->pat) < NR_EPSILON) return;
873 if (pattern_height (pp->pat) < NR_EPSILON) return;
875 /* Find buffer area in gradient space */
876 /* fixme: This is suboptimal (Lauris) */
878 if ( pp->use_cached_tile ) {
879 double pat_w=pattern_width (pp->pat);
880 double pat_h=pattern_height (pp->pat);
881 if ( pb->mode == NR_PIXBLOCK_MODE_R8G8B8A8N || pb->mode == NR_PIXBLOCK_MODE_R8G8B8A8P ) { // same thing because it's filling an empty pixblock
882 unsigned char* lpx=NR_PIXBLOCK_PX(pb);
883 double px_y=pb->area.y0;
884 for (int j=pb->area.y0;j<pb->area.y1;j++) {
885 unsigned char* cpx=lpx;
886 double px_x = pb->area.x0;
888 double ps_x=pp->px2ps.c[0]*px_x+pp->px2ps.c[2]*px_y+pp->px2ps.c[4];
889 double ps_y=pp->px2ps.c[1]*px_x+pp->px2ps.c[3]*px_y+pp->px2ps.c[5];
890 for (int i=pb->area.x0;i<pb->area.x1;i++) {
891 while ( ps_x > pat_w ) ps_x-=pat_w;
892 while ( ps_x < 0 ) ps_x+=pat_w;
893 while ( ps_y > pat_h ) ps_y-=pat_h;
894 while ( ps_y < 0 ) ps_y+=pat_h;
895 double ca_x=pp->pa2ca.c[0]*ps_x+pp->pa2ca.c[2]*ps_y+pp->pa2ca.c[4];
896 double ca_y=pp->pa2ca.c[1]*ps_x+pp->pa2ca.c[3]*ps_y+pp->pa2ca.c[5];
897 unsigned char n_a,n_r,n_g,n_b;
898 get_cached_tile_pixel(pp,ca_x,ca_y,n_r,n_g,n_b,n_a);
899 cpx[0]=n_r;
900 cpx[1]=n_g;
901 cpx[2]=n_b;
902 cpx[3]=n_a;
904 px_x+=1.0;
905 ps_x+=pp->px2ps.c[0];
906 ps_y+=pp->px2ps.c[1];
907 cpx+=4;
908 }
909 px_y+=1.0;
910 lpx+=pb->rs;
911 }
912 } else if ( pb->mode == NR_PIXBLOCK_MODE_R8G8B8 ) {
913 unsigned char* lpx=NR_PIXBLOCK_PX(pb);
914 double px_y=pb->area.y0;
915 for (int j=pb->area.y0;j<pb->area.y1;j++) {
916 unsigned char* cpx=lpx;
917 double px_x = pb->area.x0;
919 double ps_x=pp->px2ps.c[0]*px_x+pp->px2ps.c[2]*px_y+pp->px2ps.c[4];
920 double ps_y=pp->px2ps.c[1]*px_x+pp->px2ps.c[3]*px_y+pp->px2ps.c[5];
921 for (int i=pb->area.x0;i<pb->area.x1;i++) {
922 while ( ps_x > pat_w ) ps_x-=pat_w;
923 while ( ps_x < 0 ) ps_x+=pat_w;
924 while ( ps_y > pat_h ) ps_y-=pat_h;
925 while ( ps_y < 0 ) ps_y+=pat_h;
926 double ca_x=pp->pa2ca.c[0]*ps_x+pp->pa2ca.c[2]*ps_y+pp->pa2ca.c[4];
927 double ca_y=pp->pa2ca.c[1]*ps_x+pp->pa2ca.c[3]*ps_y+pp->pa2ca.c[5];
928 unsigned char n_a,n_r,n_g,n_b;
929 get_cached_tile_pixel(pp,ca_x,ca_y,n_r,n_g,n_b,n_a);
930 cpx[0]=n_r;
931 cpx[1]=n_g;
932 cpx[2]=n_b;
934 px_x+=1.0;
935 ps_x+=pp->px2ps.c[0];
936 ps_y+=pp->px2ps.c[1];
937 cpx+=4;
938 }
939 px_y+=1.0;
940 lpx+=pb->rs;
941 }
942 }
943 } else {
944 ba.x0 = pb->area.x0;
945 ba.y0 = pb->area.y0;
946 ba.x1 = pb->area.x1;
947 ba.y1 = pb->area.y1;
948 nr_rect_d_matrix_transform (&psa, &ba, &pp->px2ps);
950 psa.x0 = floor ((psa.x0 - pattern_x (pp->pat)) / pattern_width (pp->pat)) -1;
951 psa.y0 = floor ((psa.y0 - pattern_y (pp->pat)) / pattern_height (pp->pat)) -1;
952 psa.x1 = ceil ((psa.x1 - pattern_x (pp->pat)) / pattern_width (pp->pat)) +1;
953 psa.y1 = ceil ((psa.y1 - pattern_y (pp->pat)) / pattern_height (pp->pat)) +1;
955 for (y = psa.y0; y < psa.y1; y++) {
956 for (x = psa.x0; x < psa.x1; x++) {
957 NRPixBlock ppb;
958 double psx, psy;
960 psx = x * pattern_width (pp->pat);
961 psy = y * pattern_height (pp->pat);
963 area.x0 = (gint32)(pb->area.x0 - (pp->ps2px.c[0] * psx + pp->ps2px.c[2] * psy));
964 area.y0 = (gint32)(pb->area.y0 - (pp->ps2px.c[1] * psx + pp->ps2px.c[3] * psy));
965 area.x1 = area.x0 + pb->area.x1 - pb->area.x0;
966 area.y1 = area.y0 + pb->area.y1 - pb->area.y0;
968 // We do not update here anymore
970 // Set up buffer
971 // fixme: (Lauris)
972 nr_pixblock_setup_extern (&ppb, pb->mode, area.x0, area.y0, area.x1, area.y1, NR_PIXBLOCK_PX (pb), pb->rs, FALSE, FALSE);
974 nr_arena_item_invoke_render (NULL, pp->root, &area, &ppb, 0);
976 nr_pixblock_release (&ppb);
977 }
978 }
979 }
980 }