1 /*
2 */
4 #ifdef HAVE_CONFIG_H
5 # include "config.h"
6 #endif
7 #include <glibmm/i18n.h>
8 #include <cstring>
9 #include <string>
11 #include "attributes.h"
12 #include "xml/repr.h"
13 #include "style.h"
14 #include "inkscape.h"
15 #include "document.h"
16 #include "selection.h"
17 #include "desktop-handles.h"
18 #include "desktop.h"
19 #include "desktop-affine.h"
21 #include "xml/repr.h"
23 #include "sp-flowdiv.h"
24 #include "sp-flowregion.h"
25 #include "sp-flowtext.h"
26 #include "sp-string.h"
27 #include "sp-use.h"
28 #include "sp-rect.h"
29 #include "text-tag-attributes.h"
30 #include "text-chemistry.h"
33 #include "livarot/Shape.h"
35 #include "display/nr-arena-glyphs.h"
38 static void sp_flowtext_class_init(SPFlowtextClass *klass);
39 static void sp_flowtext_init(SPFlowtext *group);
40 static void sp_flowtext_dispose(GObject *object);
42 static void sp_flowtext_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref);
43 static void sp_flowtext_remove_child(SPObject *object, Inkscape::XML::Node *child);
44 static void sp_flowtext_update(SPObject *object, SPCtx *ctx, guint flags);
45 static void sp_flowtext_modified(SPObject *object, guint flags);
46 static Inkscape::XML::Node *sp_flowtext_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
47 static void sp_flowtext_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
48 static void sp_flowtext_set(SPObject *object, unsigned key, gchar const *value);
50 static void sp_flowtext_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags);
51 static void sp_flowtext_print(SPItem *item, SPPrintContext *ctx);
52 static gchar *sp_flowtext_description(SPItem *item);
53 static NRArenaItem *sp_flowtext_show(SPItem *item, NRArena *arena, unsigned key, unsigned flags);
54 static void sp_flowtext_hide(SPItem *item, unsigned key);
56 static SPItemClass *parent_class;
58 GType
59 sp_flowtext_get_type(void)
60 {
61 static GType group_type = 0;
62 if (!group_type) {
63 GTypeInfo group_info = {
64 sizeof(SPFlowtextClass),
65 NULL, /* base_init */
66 NULL, /* base_finalize */
67 (GClassInitFunc) sp_flowtext_class_init,
68 NULL, /* class_finalize */
69 NULL, /* class_data */
70 sizeof(SPFlowtext),
71 16, /* n_preallocs */
72 (GInstanceInitFunc) sp_flowtext_init,
73 NULL, /* value_table */
74 };
75 group_type = g_type_register_static(SP_TYPE_ITEM, "SPFlowtext", &group_info, (GTypeFlags)0);
76 }
77 return group_type;
78 }
80 static void
81 sp_flowtext_class_init(SPFlowtextClass *klass)
82 {
83 GObjectClass *object_class = (GObjectClass *) klass;
84 SPObjectClass *sp_object_class = (SPObjectClass *) klass;
85 SPItemClass *item_class = (SPItemClass *) klass;
87 parent_class = (SPItemClass *)g_type_class_ref(SP_TYPE_ITEM);
89 object_class->dispose = sp_flowtext_dispose;
91 sp_object_class->child_added = sp_flowtext_child_added;
92 sp_object_class->remove_child = sp_flowtext_remove_child;
93 sp_object_class->update = sp_flowtext_update;
94 sp_object_class->modified = sp_flowtext_modified;
95 sp_object_class->write = sp_flowtext_write;
96 sp_object_class->build = sp_flowtext_build;
97 sp_object_class->set = sp_flowtext_set;
99 item_class->bbox = sp_flowtext_bbox;
100 item_class->print = sp_flowtext_print;
101 item_class->description = sp_flowtext_description;
102 item_class->show = sp_flowtext_show;
103 item_class->hide = sp_flowtext_hide;
104 }
106 static void
107 sp_flowtext_init(SPFlowtext *group)
108 {
109 group->par_indent = 0;
110 new (&group->layout) Inkscape::Text::Layout();
111 }
113 static void
114 sp_flowtext_dispose(GObject *object)
115 {
116 SPFlowtext *group = (SPFlowtext*)object;
118 group->layout.~Layout();
119 }
121 static void
122 sp_flowtext_child_added(SPObject *object, Inkscape::XML::Node *child, Inkscape::XML::Node *ref)
123 {
124 if (((SPObjectClass *) (parent_class))->child_added)
125 (* ((SPObjectClass *) (parent_class))->child_added)(object, child, ref);
127 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
128 }
130 /* fixme: hide (Lauris) */
132 static void
133 sp_flowtext_remove_child(SPObject *object, Inkscape::XML::Node *child)
134 {
135 if (((SPObjectClass *) (parent_class))->remove_child)
136 (* ((SPObjectClass *) (parent_class))->remove_child)(object, child);
138 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
139 }
141 static void
142 sp_flowtext_update(SPObject *object, SPCtx *ctx, unsigned flags)
143 {
144 SPFlowtext *group = SP_FLOWTEXT(object);
145 SPItemCtx *ictx = (SPItemCtx *) ctx;
146 SPItemCtx cctx = *ictx;
148 if (((SPObjectClass *) (parent_class))->update)
149 ((SPObjectClass *) (parent_class))->update(object, ctx, flags);
151 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
152 flags &= SP_OBJECT_MODIFIED_CASCADE;
154 GSList *l = NULL;
155 for (SPObject *child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
156 g_object_ref(G_OBJECT(child));
157 l = g_slist_prepend(l, child);
158 }
159 l = g_slist_reverse(l);
160 while (l) {
161 SPObject *child = SP_OBJECT(l->data);
162 l = g_slist_remove(l, child);
163 if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
164 if (SP_IS_ITEM(child)) {
165 SPItem const &chi = *SP_ITEM(child);
166 cctx.i2doc = chi.transform * ictx->i2doc;
167 cctx.i2vp = chi.transform * ictx->i2vp;
168 child->updateDisplay((SPCtx *)&cctx, flags);
169 } else {
170 child->updateDisplay(ctx, flags);
171 }
172 }
173 g_object_unref(G_OBJECT(child));
174 }
176 group->rebuildLayout();
178 NRRect paintbox;
179 sp_item_invoke_bbox(group, &paintbox, NR::identity(), TRUE);
180 for (SPItemView *v = group->display; v != NULL; v = v->next) {
181 group->_clearFlow(NR_ARENA_GROUP(v->arenaitem));
182 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
183 // pass the bbox of the flowtext object as paintbox (used for paintserver fills)
184 group->layout.show(NR_ARENA_GROUP(v->arenaitem), &paintbox);
185 }
186 }
188 static void
189 sp_flowtext_modified(SPObject *object, guint flags)
190 {
191 SPObject *ft = SP_FLOWTEXT (object);
192 SPObject *region = NULL;
194 if (flags & SP_OBJECT_MODIFIED_FLAG) flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
195 flags &= SP_OBJECT_MODIFIED_CASCADE;
197 // FIXME: the below stanza is copied over from sp_text_modified, consider factoring it out
198 if (flags & ( SP_OBJECT_STYLE_MODIFIED_FLAG )) {
199 SPFlowtext *text = SP_FLOWTEXT(object);
200 NRRect paintbox;
201 sp_item_invoke_bbox(text, &paintbox, NR::identity(), TRUE);
202 for (SPItemView* v = text->display; v != NULL; v = v->next) {
203 text->_clearFlow(NR_ARENA_GROUP(v->arenaitem));
204 nr_arena_group_set_style(NR_ARENA_GROUP(v->arenaitem), SP_OBJECT_STYLE(object));
205 text->layout.show(NR_ARENA_GROUP(v->arenaitem), &paintbox);
206 }
207 }
209 for (SPObject *o = sp_object_first_child(SP_OBJECT(ft)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
210 if (SP_IS_FLOWREGION(o)) {
211 region = o;
212 break;
213 }
214 }
216 if (!region) return;
218 if (flags || (region->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
219 region->emitModified(flags); // pass down to the region only
220 }
221 }
223 static void
224 sp_flowtext_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
225 {
226 object->_requireSVGVersion(Inkscape::Version(1, 2));
228 if (((SPObjectClass *) (parent_class))->build) {
229 (* ((SPObjectClass *) (parent_class))->build)(object, document, repr);
230 }
232 sp_object_read_attr(object, "inkscape:layoutOptions"); // must happen after css has been read
233 }
235 static void
236 sp_flowtext_set(SPObject *object, unsigned key, gchar const *value)
237 {
238 SPFlowtext *group = (SPFlowtext *) object;
240 switch (key) {
241 case SP_ATTR_LAYOUT_OPTIONS: {
242 // deprecated attribute, read for backward compatibility only
243 SPCSSAttr *opts = sp_repr_css_attr((SP_OBJECT(group))->repr, "inkscape:layoutOptions");
244 {
245 gchar const *val = sp_repr_css_property(opts, "justification", NULL);
246 if (val != NULL && !object->style->text_align.set) {
247 if ( strcmp(val, "0") == 0 || strcmp(val, "false") == 0 ) {
248 object->style->text_align.value = SP_CSS_TEXT_ALIGN_LEFT;
249 } else {
250 object->style->text_align.value = SP_CSS_TEXT_ALIGN_JUSTIFY;
251 }
252 object->style->text_align.set = TRUE;
253 object->style->text_align.inherit = FALSE;
254 object->style->text_align.computed = object->style->text_align.value;
255 }
256 }
257 /* no equivalent css attribute for these two (yet)
258 {
259 gchar const *val = sp_repr_css_property(opts, "layoutAlgo", NULL);
260 if ( val == NULL ) {
261 group->algo = 0;
262 } else {
263 if ( strcmp(val, "better") == 0 ) { // knuth-plass, never worked for general cases
264 group->algo = 2;
265 } else if ( strcmp(val, "simple") == 0 ) { // greedy, but allowed lines to be compressed by up to 20% if it would make them fit
266 group->algo = 1;
267 } else if ( strcmp(val, "default") == 0 ) { // the same one we use, a standard greedy
268 group->algo = 0;
269 }
270 }
271 }
272 */
273 { // This would probably translate to padding-left, if SPStyle had it.
274 gchar const *val = sp_repr_css_property(opts, "par-indent", NULL);
275 if ( val == NULL ) {
276 group->par_indent = 0.0;
277 } else {
278 sp_repr_get_double((Inkscape::XML::Node*)opts, "par-indent", &group->par_indent);
279 }
280 }
281 sp_repr_css_attr_unref(opts);
282 object->requestModified(SP_OBJECT_MODIFIED_FLAG);
283 break;
284 }
285 default:
286 if (((SPObjectClass *) (parent_class))->set) {
287 (* ((SPObjectClass *) (parent_class))->set)(object, key, value);
288 }
289 break;
290 }
291 }
293 static Inkscape::XML::Node *
294 sp_flowtext_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
295 {
296 if ( flags & SP_OBJECT_WRITE_BUILD ) {
297 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));
298 if ( repr == NULL ) repr = xml_doc->createElement("svg:flowRoot");
299 GSList *l = NULL;
300 for (SPObject *child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
301 Inkscape::XML::Node *c_repr = NULL;
302 if ( SP_IS_FLOWDIV(child) || SP_IS_FLOWPARA(child) || SP_IS_FLOWREGION(child) || SP_IS_FLOWREGIONEXCLUDE(child)) {
303 c_repr = child->updateRepr(NULL, flags);
304 }
305 if ( c_repr ) l = g_slist_prepend(l, c_repr);
306 }
307 while ( l ) {
308 repr->addChild((Inkscape::XML::Node *) l->data, NULL);
309 Inkscape::GC::release((Inkscape::XML::Node *) l->data);
310 l = g_slist_remove(l, l->data);
311 }
312 } else {
313 for (SPObject *child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
314 if ( SP_IS_FLOWDIV(child) || SP_IS_FLOWPARA(child) || SP_IS_FLOWREGION(child) || SP_IS_FLOWREGIONEXCLUDE(child) ) {
315 child->updateRepr(flags);
316 }
317 }
318 }
320 if (((SPObjectClass *) (parent_class))->write)
321 ((SPObjectClass *) (parent_class))->write(object, repr, flags);
323 return repr;
324 }
326 static void
327 sp_flowtext_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const /*flags*/)
328 {
329 SPFlowtext *group = SP_FLOWTEXT(item);
330 group->layout.getBoundingBox(bbox, transform);
332 // Add stroke width
333 SPStyle* style=SP_OBJECT_STYLE (item);
334 if ( !style->stroke.isNone() ) {
335 double const scale = expansion(transform);
336 if ( fabs(style->stroke_width.computed * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
337 double const width = MAX(0.125, style->stroke_width.computed * scale);
338 if ( fabs(bbox->x1 - bbox->x0) > -0.00001 && fabs(bbox->y1 - bbox->y0) > -0.00001 ) {
339 bbox->x0-=0.5*width;
340 bbox->x1+=0.5*width;
341 bbox->y0-=0.5*width;
342 bbox->y1+=0.5*width;
343 }
344 }
345 }
346 }
348 static void
349 sp_flowtext_print(SPItem *item, SPPrintContext *ctx)
350 {
351 SPFlowtext *group = SP_FLOWTEXT(item);
353 NRRect pbox;
354 sp_item_invoke_bbox(item, &pbox, NR::identity(), TRUE);
355 NRRect bbox;
356 NR::Maybe<NR::Rect> bbox_maybe = sp_item_bbox_desktop(item);
357 if (!bbox_maybe) {
358 return;
359 }
360 bbox = NRRect(*bbox_maybe);
362 NRRect dbox;
363 dbox.x0 = 0.0;
364 dbox.y0 = 0.0;
365 dbox.x1 = sp_document_width(SP_OBJECT_DOCUMENT(item));
366 dbox.y1 = sp_document_height(SP_OBJECT_DOCUMENT(item));
367 NR::Matrix const ctm = sp_item_i2d_affine(item);
369 group->layout.print(ctx, &pbox, &dbox, &bbox, ctm);
370 }
373 static gchar *sp_flowtext_description(SPItem *item)
374 {
375 Inkscape::Text::Layout const &layout = SP_FLOWTEXT(item)->layout;
376 int const nChars = layout.iteratorToCharIndex(layout.end());
377 if (SP_FLOWTEXT(item)->has_internal_frame())
378 return g_strdup_printf(ngettext("<b>Flowed text</b> (%d character)", "<b>Flowed text</b> (%d characters)", nChars), nChars);
379 else
380 return g_strdup_printf(ngettext("<b>Linked flowed text</b> (%d character)", "<b>Linked flowed text</b> (%d characters)", nChars), nChars);
381 }
383 static NRArenaItem *
384 sp_flowtext_show(SPItem *item, NRArena *arena, unsigned/* key*/, unsigned /*flags*/)
385 {
386 SPFlowtext *group = (SPFlowtext *) item;
387 NRArenaGroup *flowed = NRArenaGroup::create(arena);
388 nr_arena_group_set_transparent(flowed, FALSE);
390 nr_arena_group_set_style(flowed, group->style);
392 // pass the bbox of the flowtext object as paintbox (used for paintserver fills)
393 NRRect paintbox;
394 sp_item_invoke_bbox(item, &paintbox, NR::identity(), TRUE);
395 group->layout.show(flowed, &paintbox);
397 return flowed;
398 }
400 static void
401 sp_flowtext_hide(SPItem *item, unsigned int key)
402 {
403 if (((SPItemClass *) parent_class)->hide)
404 ((SPItemClass *) parent_class)->hide(item, key);
405 }
408 /*
409 *
410 */
412 void SPFlowtext::_buildLayoutInput(SPObject *root, Shape const *exclusion_shape, std::list<Shape> *shapes, SPObject **pending_line_break_object)
413 {
414 Inkscape::Text::Layout::OptionalTextTagAttrs pi;
415 bool with_indent = false;
417 if (SP_IS_FLOWPARA(root)) {
418 // emulate par-indent with the first char's kern
419 SPObject *t = root;
420 for ( ; t != NULL && !SP_IS_FLOWTEXT(t); t = SP_OBJECT_PARENT(t));
421 if (SP_IS_FLOWTEXT(t)) {
422 double indent = SP_FLOWTEXT(t)->par_indent;
423 if (indent != 0) {
424 with_indent = true;
425 SVGLength sl;
426 sl.value = sl.computed = indent;
427 sl._set = true;
428 pi.dx.push_back(sl);
429 }
430 }
431 }
433 if (*pending_line_break_object) {
434 if (SP_IS_FLOWREGIONBREAK(*pending_line_break_object)) {
435 layout.appendControlCode(Inkscape::Text::Layout::SHAPE_BREAK, *pending_line_break_object);
436 } else {
437 layout.appendControlCode(Inkscape::Text::Layout::PARAGRAPH_BREAK, *pending_line_break_object);
438 }
439 *pending_line_break_object = NULL;
440 }
442 for (SPObject *child = sp_object_first_child(root) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
443 if (SP_IS_STRING(child)) {
444 if (*pending_line_break_object) {
445 if (SP_IS_FLOWREGIONBREAK(*pending_line_break_object))
446 layout.appendControlCode(Inkscape::Text::Layout::SHAPE_BREAK, *pending_line_break_object);
447 else {
448 layout.appendControlCode(Inkscape::Text::Layout::PARAGRAPH_BREAK, *pending_line_break_object);
449 }
450 *pending_line_break_object = NULL;
451 }
452 if (with_indent)
453 layout.appendText(SP_STRING(child)->string, root->style, child, &pi);
454 else
455 layout.appendText(SP_STRING(child)->string, root->style, child);
456 } else if (SP_IS_FLOWREGION(child)) {
457 std::vector<Shape*> const &computed = SP_FLOWREGION(child)->computed;
458 for (std::vector<Shape*>::const_iterator it = computed.begin() ; it != computed.end() ; it++) {
459 shapes->push_back(Shape());
460 if (exclusion_shape->hasEdges())
461 shapes->back().Booleen(*it, const_cast<Shape*>(exclusion_shape), bool_op_diff);
462 else
463 shapes->back().Copy(*it);
464 layout.appendWrapShape(&shapes->back());
465 }
466 }
467 else if (!SP_IS_FLOWREGIONEXCLUDE(child))
468 _buildLayoutInput(child, exclusion_shape, shapes, pending_line_break_object);
469 }
471 if (SP_IS_FLOWDIV(root) || SP_IS_FLOWPARA(root) || SP_IS_FLOWREGIONBREAK(root) || SP_IS_FLOWLINE(root)) {
472 if (!root->hasChildren())
473 layout.appendText("", root->style, root);
474 *pending_line_break_object = root;
475 }
476 }
478 Shape* SPFlowtext::_buildExclusionShape() const
479 {
480 Shape *shape = new Shape;
481 Shape *shape_temp = new Shape;
483 for (SPObject *child = children ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
484 // RH: is it right that this shouldn't be recursive?
485 if ( SP_IS_FLOWREGIONEXCLUDE(child) ) {
486 SPFlowregionExclude *c_child = SP_FLOWREGIONEXCLUDE(child);
487 if (c_child->computed == NULL || !c_child->computed->hasEdges())
488 continue;
489 if (shape->hasEdges()) {
490 shape_temp->Booleen(shape, c_child->computed, bool_op_union);
491 std::swap(shape, shape_temp);
492 } else
493 shape->Copy(c_child->computed);
494 }
495 }
496 delete shape_temp;
497 return shape;
498 }
500 void SPFlowtext::rebuildLayout()
501 {
502 std::list<Shape> shapes;
504 layout.clear();
505 Shape *exclusion_shape = _buildExclusionShape();
506 SPObject *pending_line_break_object = NULL;
507 _buildLayoutInput(this, exclusion_shape, &shapes, &pending_line_break_object);
508 delete exclusion_shape;
509 layout.calculateFlow();
510 //g_print(layout.dumpAsText().c_str());
511 }
513 void SPFlowtext::_clearFlow(NRArenaGroup *in_arena)
514 {
515 nr_arena_item_request_render(NR_ARENA_ITEM(in_arena));
516 for (NRArenaItem *child = in_arena->children; child != NULL; ) {
517 NRArenaItem *nchild = child->next;
519 nr_arena_glyphs_group_clear(NR_ARENA_GLYPHS_GROUP(child));
520 nr_arena_item_remove_child(NR_ARENA_ITEM(in_arena), child);
522 child = nchild;
523 }
524 }
526 Inkscape::XML::Node *
527 SPFlowtext::getAsText()
528 {
529 if (!this->layout.outputExists()) return NULL;
531 SPItem *item = SP_ITEM(this);
533 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(this));
534 Inkscape::XML::Node *repr = xml_doc->createElement("svg:text");
535 repr->setAttribute("xml:space", "preserve");
536 repr->setAttribute("style", SP_OBJECT_REPR(this)->attribute("style"));
537 NR::Point anchor_point = this->layout.characterAnchorPoint(this->layout.begin());
538 sp_repr_set_svg_double(repr, "x", anchor_point[NR::X]);
539 sp_repr_set_svg_double(repr, "y", anchor_point[NR::Y]);
541 for (Inkscape::Text::Layout::iterator it = this->layout.begin() ; it != this->layout.end() ; ) {
542 Inkscape::XML::Node *line_tspan = xml_doc->createElement("svg:tspan");
543 line_tspan->setAttribute("sodipodi:role", "line");
545 Inkscape::Text::Layout::iterator it_line_end = it;
546 it_line_end.nextStartOfLine();
548 while (it != it_line_end) {
550 Inkscape::XML::Node *span_tspan = xml_doc->createElement("svg:tspan");
551 NR::Point anchor_point = this->layout.characterAnchorPoint(it);
552 // use kerning to simulate justification and whatnot
553 Inkscape::Text::Layout::iterator it_span_end = it;
554 it_span_end.nextStartOfSpan();
555 Inkscape::Text::Layout::OptionalTextTagAttrs attrs;
556 this->layout.simulateLayoutUsingKerning(it, it_span_end, &attrs);
557 // set x,y attributes only when we need to
558 bool set_x = false;
559 bool set_y = false;
560 if (!item->transform.test_identity()) {
561 set_x = set_y = true;
562 } else {
563 Inkscape::Text::Layout::iterator it_chunk_start = it;
564 it_chunk_start.thisStartOfChunk();
565 if (it == it_chunk_start) {
566 set_x = true;
567 // don't set y so linespacing adjustments and things will still work
568 }
569 Inkscape::Text::Layout::iterator it_shape_start = it;
570 it_shape_start.thisStartOfShape();
571 if (it == it_shape_start)
572 set_y = true;
573 }
574 if (set_x && !attrs.dx.empty())
575 attrs.dx[0] = 0.0;
576 TextTagAttributes(attrs).writeTo(span_tspan);
577 if (set_x)
578 sp_repr_set_svg_double(span_tspan, "x", anchor_point[NR::X]); // FIXME: this will pick up the wrong end of counter-directional runs
579 if (set_y)
580 sp_repr_set_svg_double(span_tspan, "y", anchor_point[NR::Y]);
582 SPObject *source_obj = 0;
583 void *rawptr = 0;
584 Glib::ustring::iterator span_text_start_iter;
585 this->layout.getSourceOfCharacter(it, &rawptr, &span_text_start_iter);
586 source_obj = SP_OBJECT (rawptr);
587 gchar *style_text = sp_style_write_difference((SP_IS_STRING(source_obj) ? source_obj->parent : source_obj)->style, this->style);
588 if (style_text && *style_text) {
589 span_tspan->setAttribute("style", style_text);
590 g_free(style_text);
591 }
593 if (SP_IS_STRING(source_obj)) {
594 Glib::ustring *string = &SP_STRING(source_obj)->string;
595 SPObject *span_end_obj = 0;
596 void *rawptr = 0;
597 Glib::ustring::iterator span_text_end_iter;
598 this->layout.getSourceOfCharacter(it_span_end, &rawptr, &span_text_end_iter);
599 span_end_obj = SP_OBJECT(rawptr);
600 if (span_end_obj != source_obj) {
601 if (it_span_end == this->layout.end()) {
602 span_text_end_iter = span_text_start_iter;
603 for (int i = this->layout.iteratorToCharIndex(it_span_end) - this->layout.iteratorToCharIndex(it) ; i ; --i)
604 ++span_text_end_iter;
605 } else
606 span_text_end_iter = string->end(); // spans will never straddle a source boundary
607 }
609 if (span_text_start_iter != span_text_end_iter) {
610 Glib::ustring new_string;
611 while (span_text_start_iter != span_text_end_iter)
612 new_string += *span_text_start_iter++; // grr. no substr() with iterators
613 Inkscape::XML::Node *new_text = xml_doc->createTextNode(new_string.c_str());
614 span_tspan->appendChild(new_text);
615 Inkscape::GC::release(new_text);
616 }
617 }
618 it = it_span_end;
620 line_tspan->appendChild(span_tspan);
621 Inkscape::GC::release(span_tspan);
622 }
623 repr->appendChild(line_tspan);
624 Inkscape::GC::release(line_tspan);
625 }
627 return repr;
628 }
630 SPItem *SPFlowtext::get_frame(SPItem *after)
631 {
632 SPObject *ft = SP_OBJECT (this);
633 SPObject *region = NULL;
635 for (SPObject *o = sp_object_first_child(SP_OBJECT(ft)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
636 if (SP_IS_FLOWREGION(o)) {
637 region = o;
638 break;
639 }
640 }
642 if (!region) return NULL;
644 bool past = false;
645 SPItem *frame = NULL;
647 for (SPObject *o = sp_object_first_child(SP_OBJECT(region)) ; o != NULL ; o = SP_OBJECT_NEXT(o) ) {
648 if (SP_IS_ITEM(o)) {
649 if (after == NULL || past) {
650 frame = SP_ITEM(o);
651 } else {
652 if (SP_ITEM(o) == after) {
653 past = true;
654 }
655 }
656 }
657 }
659 if (!frame) return NULL;
661 if (SP_IS_USE (frame)) {
662 return sp_use_get_original(SP_USE(frame));
663 } else {
664 return frame;
665 }
666 }
668 bool SPFlowtext::has_internal_frame()
669 {
670 SPItem *frame = get_frame(NULL);
672 return (frame && SP_OBJECT(this)->isAncestorOf(SP_OBJECT(frame)) && SP_IS_RECT(frame));
673 }
676 SPItem *create_flowtext_with_internal_frame (SPDesktop *desktop, NR::Point p0, NR::Point p1)
677 {
678 SPDocument *doc = sp_desktop_document (desktop);
680 Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
681 Inkscape::XML::Node *root_repr = xml_doc->createElement("svg:flowRoot");
682 root_repr->setAttribute("xml:space", "preserve"); // we preserve spaces in the text objects we create
683 SPItem *ft_item = SP_ITEM(desktop->currentLayer()->appendChildRepr(root_repr));
684 SPObject *root_object = doc->getObjectByRepr(root_repr);
685 g_assert(SP_IS_FLOWTEXT(root_object));
687 Inkscape::XML::Node *region_repr = xml_doc->createElement("svg:flowRegion");
688 root_repr->appendChild(region_repr);
689 SPObject *region_object = doc->getObjectByRepr(region_repr);
690 g_assert(SP_IS_FLOWREGION(region_object));
692 Inkscape::XML::Node *rect_repr = xml_doc->createElement("svg:rect"); // FIXME: use path!!! after rects are converted to use path
693 region_repr->appendChild(rect_repr);
695 SPObject *rect = doc->getObjectByRepr(rect_repr);
697 p0 = sp_desktop_dt2root_xy_point(desktop, p0);
698 p1 = sp_desktop_dt2root_xy_point(desktop, p1);
699 using NR::X;
700 using NR::Y;
701 NR::Coord const x0 = MIN(p0[X], p1[X]);
702 NR::Coord const y0 = MIN(p0[Y], p1[Y]);
703 NR::Coord const x1 = MAX(p0[X], p1[X]);
704 NR::Coord const y1 = MAX(p0[Y], p1[Y]);
705 NR::Coord const w = x1 - x0;
706 NR::Coord const h = y1 - y0;
708 sp_rect_position_set(SP_RECT(rect), x0, y0, w, h);
709 SP_OBJECT(rect)->updateRepr();
711 Inkscape::XML::Node *para_repr = xml_doc->createElement("svg:flowPara");
712 root_repr->appendChild(para_repr);
713 SPObject *para_object = doc->getObjectByRepr(para_repr);
714 g_assert(SP_IS_FLOWPARA(para_object));
716 Inkscape::XML::Node *text = xml_doc->createTextNode("");
717 para_repr->appendChild(text);
719 Inkscape::GC::release(root_repr);
720 Inkscape::GC::release(region_repr);
721 Inkscape::GC::release(para_repr);
722 Inkscape::GC::release(rect_repr);
724 return ft_item;
725 }
728 /*
729 Local Variables:
730 mode:c++
731 c-file-style:"stroustrup"
732 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
733 indent-tabs-mode:nil
734 fill-column:99
735 End:
736 */
737 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :