1 #define __SP_TSPAN_C__
3 /*
4 * SVG <text> and <tspan> implementation
5 *
6 * Author:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * bulia byak <buliabyak@users.sf.net>
9 *
10 * Copyright (C) 1999-2002 Lauris Kaplinski
11 * Copyright (C) 2000-2001 Ximian, Inc.
12 *
13 * Released under GNU GPL, read the file 'COPYING' for more information
14 */
16 /*
17 * fixme:
18 *
19 * These subcomponents should not be items, or alternately
20 * we have to invent set of flags to mark, whether standard
21 * attributes are applicable to given item (I even like this
22 * idea somewhat - Lauris)
23 *
24 */
26 #ifdef HAVE_CONFIG_H
27 # include "config.h"
28 #endif
30 #include <livarot/Path.h>
31 #include "svg/stringstream.h"
32 #include "attributes.h"
33 #include "sp-use-reference.h"
34 #include "sp-tspan.h"
35 #include "sp-textpath.h"
36 #include "text-editing.h"
37 #include "style.h"
38 #include "libnr/nr-matrix-fns.h"
39 #include "xml/repr.h"
42 /*#####################################################
43 # SPTSPAN
44 #####################################################*/
46 static void sp_tspan_class_init(SPTSpanClass *classname);
47 static void sp_tspan_init(SPTSpan *tspan);
49 static void sp_tspan_build(SPObject * object, SPDocument * document, Inkscape::XML::Node * repr);
50 static void sp_tspan_release(SPObject *object);
51 static void sp_tspan_set(SPObject *object, unsigned key, gchar const *value);
52 static void sp_tspan_update(SPObject *object, SPCtx *ctx, guint flags);
53 static void sp_tspan_modified(SPObject *object, unsigned flags);
54 static void sp_tspan_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags);
55 static Inkscape::XML::Node *sp_tspan_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
57 static SPItemClass *tspan_parent_class;
59 /**
60 *
61 */
62 GType
63 sp_tspan_get_type()
64 {
65 static GType type = 0;
66 if (!type) {
67 GTypeInfo info = {
68 sizeof(SPTSpanClass),
69 NULL, /* base_init */
70 NULL, /* base_finalize */
71 (GClassInitFunc) sp_tspan_class_init,
72 NULL, /* class_finalize */
73 NULL, /* class_data */
74 sizeof(SPTSpan),
75 16, /* n_preallocs */
76 (GInstanceInitFunc) sp_tspan_init,
77 NULL, /* value_table */
78 };
79 type = g_type_register_static(SP_TYPE_ITEM, "SPTSpan", &info, (GTypeFlags)0);
80 }
81 return type;
82 }
84 static void
85 sp_tspan_class_init(SPTSpanClass *classname)
86 {
87 SPObjectClass * sp_object_class;
88 SPItemClass * item_class;
90 sp_object_class = (SPObjectClass *) classname;
91 item_class = (SPItemClass *) classname;
93 tspan_parent_class = (SPItemClass*)g_type_class_ref(SP_TYPE_ITEM);
95 sp_object_class->build = sp_tspan_build;
96 sp_object_class->release = sp_tspan_release;
97 sp_object_class->set = sp_tspan_set;
98 sp_object_class->update = sp_tspan_update;
99 sp_object_class->modified = sp_tspan_modified;
100 sp_object_class->write = sp_tspan_write;
102 item_class->bbox = sp_tspan_bbox;
103 }
105 static void
106 sp_tspan_init(SPTSpan *tspan)
107 {
108 tspan->role = SP_TSPAN_ROLE_UNSPECIFIED;
109 new (&tspan->attributes) TextTagAttributes;
110 }
112 static void
113 sp_tspan_release(SPObject *object)
114 {
115 SPTSpan *tspan = SP_TSPAN(object);
117 tspan->attributes.~TextTagAttributes();
119 if (((SPObjectClass *) tspan_parent_class)->release)
120 ((SPObjectClass *) tspan_parent_class)->release(object);
121 }
123 static void
124 sp_tspan_build(SPObject *object, SPDocument *doc, Inkscape::XML::Node *repr)
125 {
126 //SPTSpan *tspan = SP_TSPAN(object);
128 sp_object_read_attr(object, "x");
129 sp_object_read_attr(object, "y");
130 sp_object_read_attr(object, "dx");
131 sp_object_read_attr(object, "dy");
132 sp_object_read_attr(object, "rotate");
133 sp_object_read_attr(object, "sodipodi:role");
135 if (((SPObjectClass *) tspan_parent_class)->build)
136 ((SPObjectClass *) tspan_parent_class)->build(object, doc, repr);
137 }
139 static void
140 sp_tspan_set(SPObject *object, unsigned key, gchar const *value)
141 {
142 SPTSpan *tspan = SP_TSPAN(object);
144 if (tspan->attributes.readSingleAttribute(key, value)) {
145 if (tspan->role != SP_TSPAN_ROLE_LINE)
146 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
147 } else {
148 switch (key) {
149 case SP_ATTR_SODIPODI_ROLE:
150 if (value && (!strcmp(value, "line") || !strcmp(value, "paragraph"))) {
151 tspan->role = SP_TSPAN_ROLE_LINE;
152 } else {
153 tspan->role = SP_TSPAN_ROLE_UNSPECIFIED;
154 }
155 break;
156 default:
157 if (((SPObjectClass *) tspan_parent_class)->set)
158 (((SPObjectClass *) tspan_parent_class)->set)(object, key, value);
159 break;
160 }
161 }
162 }
164 static void
165 sp_tspan_update(SPObject *object, SPCtx *ctx, guint flags)
166 {
167 if (((SPObjectClass *) tspan_parent_class)->update)
168 ((SPObjectClass *) tspan_parent_class)->update(object, ctx, flags);
170 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
171 flags &= SP_OBJECT_MODIFIED_CASCADE;
173 SPObject *ochild;
174 for ( ochild = sp_object_first_child(object) ; ochild ; ochild = SP_OBJECT_NEXT(ochild) ) {
175 if ( flags || ( ochild->uflags & SP_OBJECT_MODIFIED_FLAG )) {
176 ochild->updateDisplay(ctx, flags);
177 }
178 }
179 }
181 static void
182 sp_tspan_modified(SPObject *object, unsigned flags)
183 {
184 if (((SPObjectClass *) tspan_parent_class)->modified)
185 ((SPObjectClass *) tspan_parent_class)->modified(object, flags);
187 if (flags & SP_OBJECT_MODIFIED_FLAG)
188 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
189 flags &= SP_OBJECT_MODIFIED_CASCADE;
191 SPObject *ochild;
192 for ( ochild = sp_object_first_child(object) ; ochild ; ochild = SP_OBJECT_NEXT(ochild) ) {
193 if (flags || (ochild->mflags & SP_OBJECT_MODIFIED_FLAG)) {
194 ochild->emitModified(flags);
195 }
196 }
197 }
199 static void sp_tspan_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags)
200 {
201 // find out the ancestor text which holds our layout
202 SPObject *parent_text = SP_OBJECT(item);
203 for (; parent_text != NULL && !SP_IS_TEXT(parent_text); parent_text = SP_OBJECT_PARENT (parent_text));
204 if (parent_text == NULL) return;
206 // get the bbox of our portion of the layout
207 SP_TEXT(parent_text)->layout.getBoundingBox(bbox, transform, sp_text_get_length_upto(parent_text, item), sp_text_get_length_upto(item, NULL) - 1);
209 // Add stroke width
210 SPStyle* style=SP_OBJECT_STYLE (item);
211 if (style->stroke.type != SP_PAINT_TYPE_NONE) {
212 double const scale = expansion(transform);
213 if ( fabs(style->stroke_width.computed * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
214 double const width = MAX(0.125, style->stroke_width.computed * scale);
215 if ( fabs(bbox->x1 - bbox->x0) > -0.00001 && fabs(bbox->y1 - bbox->y0) > -0.00001 ) {
216 bbox->x0-=0.5*width;
217 bbox->x1+=0.5*width;
218 bbox->y0-=0.5*width;
219 bbox->y1+=0.5*width;
220 }
221 }
222 }
223 }
225 static Inkscape::XML::Node *
226 sp_tspan_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
227 {
228 SPTSpan *tspan = SP_TSPAN(object);
230 if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
231 repr = sp_repr_new("svg:tspan");
232 }
234 tspan->attributes.writeTo(repr);
236 if ( flags&SP_OBJECT_WRITE_BUILD ) {
237 GSList *l = NULL;
238 for (SPObject* child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
239 Inkscape::XML::Node* c_repr=NULL;
240 if ( SP_IS_TSPAN(child) ) {
241 c_repr = child->updateRepr(NULL, flags);
242 } else if ( SP_IS_TEXTPATH(child) ) {
243 //c_repr = child->updateRepr(NULL, flags); // shouldn't happen
244 } else if ( SP_IS_STRING(child) ) {
245 c_repr = sp_repr_new_text(SP_STRING(child)->string.c_str());
246 }
247 if ( c_repr ) l = g_slist_prepend(l, c_repr);
248 }
249 while ( l ) {
250 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
251 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
252 l = g_slist_remove(l, l->data);
253 }
254 } else {
255 for (SPObject* child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
256 if ( SP_IS_TSPAN(child) ) {
257 child->updateRepr(flags);
258 } else if ( SP_IS_TEXTPATH(child) ) {
259 //c_repr = child->updateRepr(NULL, flags); // shouldn't happen
260 } else if ( SP_IS_STRING(child) ) {
261 SP_OBJECT_REPR(child)->setContent(SP_STRING(child)->string.c_str());
262 }
263 }
264 }
266 if (((SPObjectClass *) tspan_parent_class)->write)
267 ((SPObjectClass *) tspan_parent_class)->write(object, repr, flags);
269 return repr;
270 }
272 /*#####################################################
273 # SPTEXTPATH
274 #####################################################*/
276 static void sp_textpath_class_init(SPTextPathClass *classname);
277 static void sp_textpath_init(SPTextPath *textpath);
278 static void sp_textpath_finalize(GObject *obj);
280 static void sp_textpath_build(SPObject * object, SPDocument * document, Inkscape::XML::Node * repr);
281 static void sp_textpath_release(SPObject *object);
282 static void sp_textpath_set(SPObject *object, unsigned key, gchar const *value);
283 static void sp_textpath_update(SPObject *object, SPCtx *ctx, guint flags);
284 static void sp_textpath_modified(SPObject *object, unsigned flags);
285 static Inkscape::XML::Node *sp_textpath_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
287 static SPItemClass *textpath_parent_class;
289 void refresh_textpath_source(SPTextPath* offset);
292 /**
293 *
294 */
295 GType
296 sp_textpath_get_type()
297 {
298 static GType type = 0;
299 if (!type) {
300 GTypeInfo info = {
301 sizeof(SPTextPathClass),
302 NULL, /* base_init */
303 NULL, /* base_finalize */
304 (GClassInitFunc) sp_textpath_class_init,
305 NULL, /* class_finalize */
306 NULL, /* class_data */
307 sizeof(SPTextPath),
308 16, /* n_preallocs */
309 (GInstanceInitFunc) sp_textpath_init,
310 NULL, /* value_table */
311 };
312 type = g_type_register_static(SP_TYPE_ITEM, "SPTextPath", &info, (GTypeFlags)0);
313 }
314 return type;
315 }
317 static void
318 sp_textpath_class_init(SPTextPathClass *classname)
319 {
320 GObjectClass *gobject_class = (GObjectClass *) classname;
321 SPObjectClass * sp_object_class;
322 SPItemClass * item_class;
324 sp_object_class = (SPObjectClass *) classname;
325 item_class = (SPItemClass *) classname;
327 textpath_parent_class = (SPItemClass*)g_type_class_ref(SP_TYPE_ITEM);
329 gobject_class->finalize = sp_textpath_finalize;
331 sp_object_class->build = sp_textpath_build;
332 sp_object_class->release = sp_textpath_release;
333 sp_object_class->set = sp_textpath_set;
334 sp_object_class->update = sp_textpath_update;
335 sp_object_class->modified = sp_textpath_modified;
336 sp_object_class->write = sp_textpath_write;
337 }
339 static void
340 sp_textpath_init(SPTextPath *textpath)
341 {
342 new (&textpath->attributes) TextTagAttributes;
344 textpath->startOffset._set = false;
345 textpath->originalPath = NULL;
346 textpath->isUpdating=false;
347 // set up the uri reference
348 textpath->sourcePath = new SPUsePath(SP_OBJECT(textpath));
349 textpath->sourcePath->user_unlink = sp_textpath_to_text;
350 }
352 static void
353 sp_textpath_finalize(GObject *obj)
354 {
355 SPTextPath *textpath = (SPTextPath *) obj;
357 delete textpath->sourcePath;
358 }
360 static void
361 sp_textpath_release(SPObject *object)
362 {
363 SPTextPath *textpath = SP_TEXTPATH(object);
365 textpath->attributes.~TextTagAttributes();
367 if (textpath->originalPath) delete textpath->originalPath;
368 textpath->originalPath = NULL;
370 if (((SPObjectClass *) textpath_parent_class)->release)
371 ((SPObjectClass *) textpath_parent_class)->release(object);
372 }
374 static void
375 sp_textpath_build(SPObject *object, SPDocument *doc, Inkscape::XML::Node *repr)
376 {
377 //SPTextPath *textpath = SP_TEXTPATH(object);
379 sp_object_read_attr(object, "x");
380 sp_object_read_attr(object, "y");
381 sp_object_read_attr(object, "dx");
382 sp_object_read_attr(object, "dy");
383 sp_object_read_attr(object, "rotate");
384 sp_object_read_attr(object, "startOffset");
385 sp_object_read_attr(object, "xlink:href");
387 bool no_content=true;
388 for (Inkscape::XML::Node* rch = repr->firstChild() ; rch != NULL; rch = rch->next()) {
389 if ( rch->type() == Inkscape::XML::TEXT_NODE ) {no_content=false;break;}
390 }
392 if ( no_content ) {
393 Inkscape::XML::Node* rch = sp_repr_new_text("");
394 repr->addChild(rch, NULL);
395 }
397 if (((SPObjectClass *) textpath_parent_class)->build)
398 ((SPObjectClass *) textpath_parent_class)->build(object, doc, repr);
399 }
401 static void
402 sp_textpath_set(SPObject *object, unsigned key, gchar const *value)
403 {
404 SPTextPath *textpath = SP_TEXTPATH(object);
406 if (textpath->attributes.readSingleAttribute(key, value)) {
407 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
408 } else {
409 switch (key) {
410 case SP_ATTR_XLINK_HREF:
411 textpath->sourcePath->link((char*)value);
412 break;
413 case SP_ATTR_STARTOFFSET:
414 textpath->startOffset.readOrUnset(value);
415 object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
416 break;
417 default:
418 if (((SPObjectClass *) textpath_parent_class)->set)
419 (((SPObjectClass *) textpath_parent_class)->set)(object, key, value);
420 break;
421 }
422 }
423 }
425 static void
426 sp_textpath_update(SPObject *object, SPCtx *ctx, guint flags)
427 {
428 SPTextPath *textpath = SP_TEXTPATH(object);
430 textpath->isUpdating=true;
431 if ( textpath->sourcePath->sourceDirty ) refresh_textpath_source(textpath);
432 textpath->isUpdating=false;
434 if (((SPObjectClass *) textpath_parent_class)->update)
435 ((SPObjectClass *) textpath_parent_class)->update(object, ctx, flags);
437 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
438 flags &= SP_OBJECT_MODIFIED_CASCADE;
440 SPObject *ochild;
441 for ( ochild = sp_object_first_child(object) ; ochild ; ochild = SP_OBJECT_NEXT(ochild) ) {
442 if ( flags || ( ochild->uflags & SP_OBJECT_MODIFIED_FLAG )) {
443 ochild->updateDisplay(ctx, flags);
444 }
445 }
446 }
449 void refresh_textpath_source(SPTextPath* tp)
450 {
451 if ( tp == NULL ) return;
452 tp->sourcePath->refresh_source();
453 tp->sourcePath->sourceDirty=false;
455 // finalisons
456 if ( tp->sourcePath->originalPath ) {
457 if (tp->originalPath) {
458 delete tp->originalPath;
459 }
460 tp->originalPath = NULL;
462 tp->originalPath = new Path;
463 tp->originalPath->Copy(tp->sourcePath->originalPath);
464 tp->originalPath->ConvertWithBackData(0.01);
466 }
467 }
469 static void
470 sp_textpath_modified(SPObject *object, unsigned flags)
471 {
472 if (((SPObjectClass *) textpath_parent_class)->modified)
473 ((SPObjectClass *) textpath_parent_class)->modified(object, flags);
475 if (flags & SP_OBJECT_MODIFIED_FLAG)
476 flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
477 flags &= SP_OBJECT_MODIFIED_CASCADE;
479 SPObject *ochild;
480 for ( ochild = sp_object_first_child(object) ; ochild ; ochild = SP_OBJECT_NEXT(ochild) ) {
481 if (flags || (ochild->mflags & SP_OBJECT_MODIFIED_FLAG)) {
482 ochild->emitModified(flags);
483 }
484 }
485 }
486 static Inkscape::XML::Node *
487 sp_textpath_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
488 {
489 SPTextPath *textpath = SP_TEXTPATH(object);
491 if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
492 repr = sp_repr_new("svg:textPath");
493 }
495 textpath->attributes.writeTo(repr);
496 if (textpath->startOffset._set) {
497 if (textpath->startOffset.unit == SVGLength::PERCENT) {
498 Inkscape::SVGOStringStream os;
499 os << (textpath->startOffset.computed * 100.0) << "%";
500 SP_OBJECT_REPR(textpath)->setAttribute("startOffset", os.str().c_str());
501 } else {
502 /* FIXME: This logic looks rather undesirable if e.g. startOffset is to be
503 in ems. */
504 sp_repr_set_svg_double(repr, "startOffset", textpath->startOffset.computed);
505 }
506 }
508 if ( textpath->sourcePath->sourceHref ) repr->setAttribute("xlink:href", textpath->sourcePath->sourceHref);
510 if ( flags&SP_OBJECT_WRITE_BUILD ) {
511 GSList *l = NULL;
512 for (SPObject* child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
513 Inkscape::XML::Node* c_repr=NULL;
514 if ( SP_IS_TSPAN(child) ) {
515 c_repr = child->updateRepr(NULL, flags);
516 } else if ( SP_IS_TEXTPATH(child) ) {
517 //c_repr = child->updateRepr(NULL, flags); // shouldn't happen
518 } else if ( SP_IS_STRING(child) ) {
519 c_repr = sp_repr_new_text(SP_STRING(child)->string.c_str());
520 }
521 if ( c_repr ) l = g_slist_prepend(l, c_repr);
522 }
523 while ( l ) {
524 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
525 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
526 l = g_slist_remove(l, l->data);
527 }
528 } else {
529 for (SPObject* child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
530 if ( SP_IS_TSPAN(child) ) {
531 child->updateRepr(flags);
532 } else if ( SP_IS_TEXTPATH(child) ) {
533 //c_repr = child->updateRepr(NULL, flags); // shouldn't happen
534 } else if ( SP_IS_STRING(child) ) {
535 SP_OBJECT_REPR(child)->setContent(SP_STRING(child)->string.c_str());
536 }
537 }
538 }
540 if (((SPObjectClass *) textpath_parent_class)->write)
541 ((SPObjectClass *) textpath_parent_class)->write(object, repr, flags);
543 return repr;
544 }
547 SPItem *
548 sp_textpath_get_path_item(SPTextPath *tp)
549 {
550 if (tp && tp->sourcePath) {
551 SPItem *refobj = tp->sourcePath->getObject();
552 if (SP_IS_ITEM(refobj))
553 return (SPItem *) refobj;
554 }
555 return NULL;
556 }
558 void
559 sp_textpath_to_text(SPObject *tp)
560 {
561 SPObject *text = SP_OBJECT_PARENT(tp);
563 NRRect bbox;
564 sp_item_invoke_bbox(SP_ITEM(text), &bbox, sp_item_i2doc_affine(SP_ITEM(text)), TRUE);
565 NR::Point xy(bbox.x0, bbox.y0);
567 // make a list of textpath children
568 GSList *tp_reprs = NULL;
569 for (SPObject *o = SP_OBJECT(tp)->firstChild() ; o != NULL; o = o->next) {
570 tp_reprs = g_slist_prepend(tp_reprs, SP_OBJECT_REPR(o));
571 }
573 for ( GSList *i = tp_reprs ; i ; i = i->next ) {
574 // make a copy of each textpath child
575 Inkscape::XML::Node *copy = ((Inkscape::XML::Node *) i->data)->duplicate();
576 // remove the old repr from under textpath
577 SP_OBJECT_REPR(tp)->removeChild((Inkscape::XML::Node *) i->data);
578 // put its copy into under textPath
579 SP_OBJECT_REPR(text)->addChild(copy, NULL); // fixme: copy id
580 }
582 //remove textpath
583 tp->deleteObject();
584 g_slist_free(tp_reprs);
586 // set x/y on text
587 /* fixme: Yuck, is this really the right test? */
588 if (xy[NR::X] != 1e18 && xy[NR::Y] != 1e18) {
589 sp_repr_set_svg_double(SP_OBJECT_REPR(text), "x", xy[NR::X]);
590 sp_repr_set_svg_double(SP_OBJECT_REPR(text), "y", xy[NR::Y]);
591 }
592 }
595 /*
596 Local Variables:
597 mode:c++
598 c-file-style:"stroustrup"
599 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
600 indent-tabs-mode:nil
601 fill-column:99
602 End:
603 */
604 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :