1 #define __SP_STYLE_C__
3 /** \file
4 * SVG stylesheets implementation.
5 *
6 * Authors:
7 * Lauris Kaplinski <lauris@kaplinski.com>
8 * Peter Moulder <pmoulder@mail.csse.monash.edu.au>
9 * bulia byak <buliabyak@users.sf.net>
10 *
11 * Copyright (C) 2001-2002 Lauris Kaplinski
12 * Copyright (C) 2001 Ximian, Inc.
13 * Copyright (C) 2005 Monash University
14 *
15 * Released under GNU GPL, read the file 'COPYING' for more information
16 */
18 #ifdef HAVE_CONFIG_H
19 # include "config.h"
20 #endif
22 #include "libcroco/cr-sel-eng.h"
23 #include "xml/croco-node-iface.h"
25 #include "svg/svg.h"
26 #include "svg/svg-color.h"
27 #include "svg/svg-icc-color.h"
29 #include "display/canvas-bpath.h"
30 #include "attributes.h"
31 #include "document.h"
32 #include "extract-uri.h"
33 #include "uri-references.h"
34 #include "uri.h"
35 #include "sp-paint-server.h"
36 #include "streq.h"
37 #include "strneq.h"
38 #include "style.h"
39 #include "svg/css-ostringstream.h"
40 #include "xml/repr.h"
41 #include "unit-constants.h"
42 #include "isnan.h"
43 #include "macros.h"
45 #include "sp-filter-reference.h"
47 #include <sigc++/functors/ptr_fun.h>
48 #include <sigc++/adaptors/bind.h>
50 using Inkscape::CSSOStringStream;
51 using std::vector;
53 #define BMAX 8192
55 class SPStyleEnum;
57 /*#########################
58 ## FORWARD DECLARATIONS
59 #########################*/
60 static void sp_style_clear(SPStyle *style);
62 static void sp_style_merge_property(SPStyle *style, gint id, gchar const *val);
64 static void sp_style_merge_ipaint(SPStyle *style, SPIPaint *paint, SPIPaint const *parent);
65 static void sp_style_merge_ifilter(SPStyle *style, SPIFilter const *parent);
66 static void sp_style_read_dash(SPStyle *style, gchar const *str);
68 static SPTextStyle *sp_text_style_new(void);
69 static void sp_text_style_clear(SPTextStyle *ts);
70 static SPTextStyle *sp_text_style_unref(SPTextStyle *st);
71 static SPTextStyle *sp_text_style_duplicate_unset(SPTextStyle *st);
72 static guint sp_text_style_write(gchar *p, guint len, SPTextStyle const *st, guint flags = SP_STYLE_FLAG_IFSET);
73 static void sp_style_privatize_text(SPStyle *style);
75 static void sp_style_read_ifloat(SPIFloat *val, gchar const *str);
76 static void sp_style_read_iscale24(SPIScale24 *val, gchar const *str);
77 static void sp_style_read_ienum(SPIEnum *val, gchar const *str, SPStyleEnum const *dict, bool can_explicitly_inherit);
78 static void sp_style_read_istring(SPIString *val, gchar const *str);
79 static void sp_style_read_ilength(SPILength *val, gchar const *str);
80 static void sp_style_read_ilengthornormal(SPILengthOrNormal *val, gchar const *str);
81 static void sp_style_read_itextdecoration(SPITextDecoration *val, gchar const *str);
82 static void sp_style_read_icolor(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocument *document);
83 static void sp_style_read_ipaint(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocument *document);
84 static void sp_style_read_ifontsize(SPIFontSize *val, gchar const *str);
85 static void sp_style_read_ifilter(gchar const *str, SPStyle *style, SPDocument *document);
87 static void sp_style_read_penum(SPIEnum *val, Inkscape::XML::Node *repr, gchar const *key, SPStyleEnum const *dict, bool can_explicitly_inherit);
88 static void sp_style_read_plength(SPILength *val, Inkscape::XML::Node *repr, gchar const *key);
89 static void sp_style_read_pfontsize(SPIFontSize *val, Inkscape::XML::Node *repr, gchar const *key);
90 static void sp_style_read_pfloat(SPIFloat *val, Inkscape::XML::Node *repr, gchar const *key);
92 static gint sp_style_write_ifloat(gchar *p, gint len, gchar const *key, SPIFloat const *val, SPIFloat const *base, guint flags);
93 static gint sp_style_write_iscale24(gchar *p, gint len, gchar const *key, SPIScale24 const *val, SPIScale24 const *base, guint flags);
94 static gint sp_style_write_ienum(gchar *p, gint len, gchar const *key, SPStyleEnum const *dict, SPIEnum const *val, SPIEnum const *base, guint flags);
95 static gint sp_style_write_istring(gchar *p, gint len, gchar const *key, SPIString const *val, SPIString const *base, guint flags);
96 static gint sp_style_write_ilength(gchar *p, gint len, gchar const *key, SPILength const *val, SPILength const *base, guint flags);
97 static gint sp_style_write_ipaint(gchar *b, gint len, gchar const *key, SPIPaint const *paint, SPIPaint const *base, guint flags);
98 static gint sp_style_write_ifontsize(gchar *p, gint len, gchar const *key, SPIFontSize const *val, SPIFontSize const *base, guint flags);
99 static gint sp_style_write_ilengthornormal(gchar *p, gint const len, gchar const *const key, SPILengthOrNormal const *const val, SPILengthOrNormal const *const base, guint const flags);
100 static gint sp_style_write_itextdecoration(gchar *p, gint const len, gchar const *const key, SPITextDecoration const *const val, SPITextDecoration const *const base, guint const flags);
101 static gint sp_style_write_ifilter(gchar *b, gint len, gchar const *key, SPIFilter const *filter, SPIFilter const *base, guint flags);
103 static void sp_style_filter_clear(SPStyle *style);
105 #define SPS_READ_IENUM_IF_UNSET(v,s,d,i) if (!(v)->set) {sp_style_read_ienum((v), (s), (d), (i));}
106 #define SPS_READ_PENUM_IF_UNSET(v,r,k,d,i) if (!(v)->set) {sp_style_read_penum((v), (r), (k), (d), (i));}
108 #define SPS_READ_ILENGTH_IF_UNSET(v,s) if (!(v)->set) {sp_style_read_ilength((v), (s));}
109 #define SPS_READ_PLENGTH_IF_UNSET(v,r,k) if (!(v)->set) {sp_style_read_plength((v), (r), (k));}
111 #define SPS_READ_PFLOAT_IF_UNSET(v,r,k) if (!(v)->set) {sp_style_read_pfloat((v), (r), (k));}
113 #define SPS_READ_IFONTSIZE_IF_UNSET(v,s) if (!(v)->set) {sp_style_read_ifontsize((v), (s));}
114 #define SPS_READ_PFONTSIZE_IF_UNSET(v,r,k) if (!(v)->set) {sp_style_read_pfontsize((v), (r), (k));}
116 static void sp_style_merge_from_object_stylesheet(SPStyle *, SPObject const *);
118 struct SPStyleEnum {
119 gchar const *key;
120 gint value;
121 };
123 static SPStyleEnum const enum_fill_rule[] = {
124 {"nonzero", SP_WIND_RULE_NONZERO},
125 {"evenodd", SP_WIND_RULE_EVENODD},
126 {NULL, -1}
127 };
129 static SPStyleEnum const enum_stroke_linecap[] = {
130 {"butt", SP_STROKE_LINECAP_BUTT},
131 {"round", SP_STROKE_LINECAP_ROUND},
132 {"square", SP_STROKE_LINECAP_SQUARE},
133 {NULL, -1}
134 };
136 static SPStyleEnum const enum_stroke_linejoin[] = {
137 {"miter", SP_STROKE_LINEJOIN_MITER},
138 {"round", SP_STROKE_LINEJOIN_ROUND},
139 {"bevel", SP_STROKE_LINEJOIN_BEVEL},
140 {NULL, -1}
141 };
143 static SPStyleEnum const enum_font_style[] = {
144 {"normal", SP_CSS_FONT_STYLE_NORMAL},
145 {"italic", SP_CSS_FONT_STYLE_ITALIC},
146 {"oblique", SP_CSS_FONT_STYLE_OBLIQUE},
147 {NULL, -1}
148 };
150 static SPStyleEnum const enum_font_size[] = {
151 {"xx-small", SP_CSS_FONT_SIZE_XX_SMALL},
152 {"x-small", SP_CSS_FONT_SIZE_X_SMALL},
153 {"small", SP_CSS_FONT_SIZE_SMALL},
154 {"medium", SP_CSS_FONT_SIZE_MEDIUM},
155 {"large", SP_CSS_FONT_SIZE_LARGE},
156 {"x-large", SP_CSS_FONT_SIZE_X_LARGE},
157 {"xx-large", SP_CSS_FONT_SIZE_XX_LARGE},
158 {"smaller", SP_CSS_FONT_SIZE_SMALLER},
159 {"larger", SP_CSS_FONT_SIZE_LARGER},
160 {NULL, -1}
161 };
163 static SPStyleEnum const enum_font_variant[] = {
164 {"normal", SP_CSS_FONT_VARIANT_NORMAL},
165 {"small-caps", SP_CSS_FONT_VARIANT_SMALL_CAPS},
166 {NULL, -1}
167 };
169 static SPStyleEnum const enum_font_weight[] = {
170 {"100", SP_CSS_FONT_WEIGHT_100},
171 {"200", SP_CSS_FONT_WEIGHT_200},
172 {"300", SP_CSS_FONT_WEIGHT_300},
173 {"400", SP_CSS_FONT_WEIGHT_400},
174 {"500", SP_CSS_FONT_WEIGHT_500},
175 {"600", SP_CSS_FONT_WEIGHT_600},
176 {"700", SP_CSS_FONT_WEIGHT_700},
177 {"800", SP_CSS_FONT_WEIGHT_800},
178 {"900", SP_CSS_FONT_WEIGHT_900},
179 {"normal", SP_CSS_FONT_WEIGHT_NORMAL},
180 {"bold", SP_CSS_FONT_WEIGHT_BOLD},
181 {"lighter", SP_CSS_FONT_WEIGHT_LIGHTER},
182 {"bolder", SP_CSS_FONT_WEIGHT_BOLDER},
183 {NULL, -1}
184 };
186 static SPStyleEnum const enum_font_stretch[] = {
187 {"ultra-condensed", SP_CSS_FONT_STRETCH_ULTRA_CONDENSED},
188 {"extra-condensed", SP_CSS_FONT_STRETCH_EXTRA_CONDENSED},
189 {"condensed", SP_CSS_FONT_STRETCH_CONDENSED},
190 {"semi-condensed", SP_CSS_FONT_STRETCH_SEMI_CONDENSED},
191 {"normal", SP_CSS_FONT_STRETCH_NORMAL},
192 {"semi-expanded", SP_CSS_FONT_STRETCH_SEMI_EXPANDED},
193 {"expanded", SP_CSS_FONT_STRETCH_EXPANDED},
194 {"extra-expanded", SP_CSS_FONT_STRETCH_EXTRA_EXPANDED},
195 {"ultra-expanded", SP_CSS_FONT_STRETCH_ULTRA_EXPANDED},
196 {"narrower", SP_CSS_FONT_STRETCH_NARROWER},
197 {"wider", SP_CSS_FONT_STRETCH_WIDER},
198 {NULL, -1}
199 };
201 static SPStyleEnum const enum_text_align[] = {
202 {"start", SP_CSS_TEXT_ALIGN_START},
203 {"end", SP_CSS_TEXT_ALIGN_END},
204 {"left", SP_CSS_TEXT_ALIGN_LEFT},
205 {"right", SP_CSS_TEXT_ALIGN_RIGHT},
206 {"center", SP_CSS_TEXT_ALIGN_CENTER},
207 {"justify", SP_CSS_TEXT_ALIGN_JUSTIFY},
208 {NULL, -1}
209 };
211 static SPStyleEnum const enum_text_transform[] = {
212 {"capitalize", SP_CSS_TEXT_TRANSFORM_CAPITALIZE},
213 {"uppercase", SP_CSS_TEXT_TRANSFORM_UPPERCASE},
214 {"lowercase", SP_CSS_TEXT_TRANSFORM_LOWERCASE},
215 {"none", SP_CSS_TEXT_TRANSFORM_NONE},
216 {NULL, -1}
217 };
219 static SPStyleEnum const enum_text_anchor[] = {
220 {"start", SP_CSS_TEXT_ANCHOR_START},
221 {"middle", SP_CSS_TEXT_ANCHOR_MIDDLE},
222 {"end", SP_CSS_TEXT_ANCHOR_END},
223 {NULL, -1}
224 };
226 static SPStyleEnum const enum_direction[] = {
227 {"ltr", SP_CSS_DIRECTION_LTR},
228 {"rtl", SP_CSS_DIRECTION_RTL},
229 {NULL, -1}
230 };
232 static SPStyleEnum const enum_block_progression[] = {
233 {"tb", SP_CSS_BLOCK_PROGRESSION_TB},
234 {"rl", SP_CSS_BLOCK_PROGRESSION_RL},
235 {"lr", SP_CSS_BLOCK_PROGRESSION_LR},
236 {NULL, -1}
237 };
239 static SPStyleEnum const enum_writing_mode[] = {
240 /* Note that using the same enumerator for lr as lr-tb means we write as lr-tb even if the
241 * input file said lr. We prefer writing lr-tb on the grounds that the spec says the initial
242 * value is lr-tb rather than lr.
243 *
244 * ECMA scripts may be surprised to find tb-rl in DOM if they set the attribute to rl, so
245 * sharing enumerators for different strings may be a bug (once we support ecma script).
246 */
247 {"lr-tb", SP_CSS_WRITING_MODE_LR_TB},
248 {"rl-tb", SP_CSS_WRITING_MODE_RL_TB},
249 {"tb-rl", SP_CSS_WRITING_MODE_TB_RL},
250 {"lr", SP_CSS_WRITING_MODE_LR_TB},
251 {"rl", SP_CSS_WRITING_MODE_RL_TB},
252 {"tb", SP_CSS_WRITING_MODE_TB_RL},
253 {NULL, -1}
254 };
256 static SPStyleEnum const enum_visibility[] = {
257 {"hidden", SP_CSS_VISIBILITY_HIDDEN},
258 {"collapse", SP_CSS_VISIBILITY_COLLAPSE},
259 {"visible", SP_CSS_VISIBILITY_VISIBLE},
260 {NULL, -1}
261 };
263 static SPStyleEnum const enum_overflow[] = {
264 {"visible", SP_CSS_OVERFLOW_VISIBLE},
265 {"hidden", SP_CSS_OVERFLOW_HIDDEN},
266 {"scroll", SP_CSS_OVERFLOW_SCROLL},
267 {"auto", SP_CSS_OVERFLOW_AUTO},
268 {NULL, -1}
269 };
271 static SPStyleEnum const enum_display[] = {
272 {"none", SP_CSS_DISPLAY_NONE},
273 {"inline", SP_CSS_DISPLAY_INLINE},
274 {"block", SP_CSS_DISPLAY_BLOCK},
275 {"list-item", SP_CSS_DISPLAY_LIST_ITEM},
276 {"run-in", SP_CSS_DISPLAY_RUN_IN},
277 {"compact", SP_CSS_DISPLAY_COMPACT},
278 {"marker", SP_CSS_DISPLAY_MARKER},
279 {"table", SP_CSS_DISPLAY_TABLE},
280 {"inline-table", SP_CSS_DISPLAY_INLINE_TABLE},
281 {"table-row-group", SP_CSS_DISPLAY_TABLE_ROW_GROUP},
282 {"table-header-group", SP_CSS_DISPLAY_TABLE_HEADER_GROUP},
283 {"table-footer-group", SP_CSS_DISPLAY_TABLE_FOOTER_GROUP},
284 {"table-row", SP_CSS_DISPLAY_TABLE_ROW},
285 {"table-column-group", SP_CSS_DISPLAY_TABLE_COLUMN_GROUP},
286 {"table-column", SP_CSS_DISPLAY_TABLE_COLUMN},
287 {"table-cell", SP_CSS_DISPLAY_TABLE_CELL},
288 {"table-caption", SP_CSS_DISPLAY_TABLE_CAPTION},
289 {NULL, -1}
290 };
292 static SPStyleEnum const enum_shape_rendering[] = {
293 {"auto", 0},
294 {"optimizeSpeed", 0},
295 {"crispEdges", 0},
296 {"geometricPrecision", 0},
297 {NULL, -1}
298 };
300 static SPStyleEnum const enum_color_rendering[] = {
301 {"auto", 0},
302 {"optimizeSpeed", 0},
303 {"optimizeQuality", 0},
304 {NULL, -1}
305 };
307 static SPStyleEnum const *const enum_image_rendering = enum_color_rendering;
309 static SPStyleEnum const enum_text_rendering[] = {
310 {"auto", 0},
311 {"optimizeSpeed", 0},
312 {"optimizeLegibility", 0},
313 {"geometricPrecision", 0},
314 {NULL, -1}
315 };
317 static SPStyleEnum const enum_enable_background[] = {
318 {"accumulate", SP_CSS_BACKGROUND_ACCUMULATE},
319 {"new", SP_CSS_BACKGROUND_NEW},
320 {NULL, -1}
321 };
323 /**
324 * Release callback.
325 */
326 static void
327 sp_style_object_release(SPObject *object, SPStyle *style)
328 {
329 (void)object; // TODO
330 style->object = NULL;
331 }
333 /**
334 * Emit style modified signal on style's object if the filter changed.
335 */
336 static void
337 sp_style_filter_ref_modified(SPObject *obj, guint flags, SPStyle *style)
338 {
339 (void)flags; // TODO
340 SPFilter *filter=static_cast<SPFilter *>(obj);
341 if (style->getFilter() == filter)
342 {
343 if (style->object) {
344 style->object->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
345 }
346 }
347 }
349 /**
350 * Gets called when the filter is (re)attached to the style
351 */
352 static void
353 sp_style_filter_ref_changed(SPObject *old_ref, SPObject *ref, SPStyle *style)
354 {
355 if (old_ref) {
356 style->filter_modified_connection.disconnect();
357 }
358 if ( SP_IS_FILTER(ref))
359 {
360 style->filter_modified_connection =
361 ref->connectModified(sigc::bind(sigc::ptr_fun(&sp_style_filter_ref_modified), style));
362 }
364 sp_style_filter_ref_modified(ref, 0, style);
365 }
367 /**
368 * Emit style modified signal on style's object if server is style's fill
369 * or stroke paint server.
370 */
371 static void
372 sp_style_paint_server_ref_modified(SPObject *obj, guint flags, SPStyle *style)
373 {
374 (void)flags; // TODO
375 SPPaintServer *server = static_cast<SPPaintServer *>(obj);
377 if ((style->fill.isPaintserver())
378 && style->getFillPaintServer() == server)
379 {
380 if (style->object) {
381 /** \todo
382 * fixme: I do not know, whether it is optimal - we are
383 * forcing reread of everything (Lauris)
384 */
385 /** \todo
386 * fixme: We have to use object_modified flag, because parent
387 * flag is only available downstreams.
388 */
389 style->object->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
390 }
391 } else if ((style->stroke.isPaintserver())
392 && style->getStrokePaintServer() == server)
393 {
394 if (style->object) {
395 /// \todo fixme:
396 style->object->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
397 }
398 } else if (server) {
399 g_assert_not_reached();
400 }
401 }
403 /**
404 * Gets called when the paintserver is (re)attached to the style
405 */
406 static void
407 sp_style_fill_paint_server_ref_changed(SPObject *old_ref, SPObject *ref, SPStyle *style)
408 {
409 if (old_ref) {
410 style->fill_ps_modified_connection.disconnect();
411 }
412 if (SP_IS_PAINT_SERVER(ref)) {
413 style->fill_ps_modified_connection =
414 ref->connectModified(sigc::bind(sigc::ptr_fun(&sp_style_paint_server_ref_modified), style));
415 }
417 sp_style_paint_server_ref_modified(ref, 0, style);
418 }
420 /**
421 * Gets called when the paintserver is (re)attached to the style
422 */
423 static void
424 sp_style_stroke_paint_server_ref_changed(SPObject *old_ref, SPObject *ref, SPStyle *style)
425 {
426 if (old_ref) {
427 style->stroke_ps_modified_connection.disconnect();
428 }
429 if (SP_IS_PAINT_SERVER(ref)) {
430 style->stroke_ps_modified_connection =
431 ref->connectModified(sigc::bind(sigc::ptr_fun(&sp_style_paint_server_ref_modified), style));
432 }
434 sp_style_paint_server_ref_modified(ref, 0, style);
435 }
437 /**
438 * Returns a new SPStyle object with settings as per sp_style_clear().
439 */
440 SPStyle *
441 sp_style_new(SPDocument *document)
442 {
443 SPStyle *const style = g_new0(SPStyle, 1);
445 style->refcount = 1;
446 style->object = NULL;
447 style->document = document;
448 style->text = sp_text_style_new();
449 style->text_private = TRUE;
451 sp_style_clear(style);
453 style->cloned = false;
455 new (&style->release_connection) sigc::connection();
456 new (&style->filter_modified_connection) sigc::connection();
457 new (&style->fill_ps_modified_connection) sigc::connection();
458 new (&style->stroke_ps_modified_connection) sigc::connection();
460 return style;
461 }
464 /**
465 * Creates a new SPStyle object, and attaches it to the specified SPObject.
466 */
467 SPStyle *
468 sp_style_new_from_object(SPObject *object)
469 {
470 g_return_val_if_fail(object != NULL, NULL);
471 g_return_val_if_fail(SP_IS_OBJECT(object), NULL);
473 SPStyle *style = sp_style_new(SP_OBJECT_DOCUMENT(object));
474 style->object = object;
475 style->release_connection = object->connectRelease(sigc::bind<1>(sigc::ptr_fun(&sp_style_object_release), style));
477 if (object && SP_OBJECT_IS_CLONED(object)) {
478 style->cloned = true;
479 }
481 return style;
482 }
485 /**
486 * Increase refcount of style.
487 */
488 SPStyle *
489 sp_style_ref(SPStyle *style)
490 {
491 g_return_val_if_fail(style != NULL, NULL);
492 g_return_val_if_fail(style->refcount > 0, NULL);
494 style->refcount += 1;
496 return style;
497 }
500 /**
501 * Decrease refcount of style with possible destruction.
502 */
503 SPStyle *
504 sp_style_unref(SPStyle *style)
505 {
506 g_return_val_if_fail(style != NULL, NULL);
507 g_return_val_if_fail(style->refcount > 0, NULL);
509 style->refcount -= 1;
511 if (style->refcount < 1) {
512 style->release_connection.disconnect();
513 style->release_connection.~connection();
514 if (style->text) sp_text_style_unref(style->text);
516 if (style->fill.value.href) {
517 style->fill_ps_modified_connection.disconnect();
518 delete style->fill.value.href;
519 style->fill.value.href = NULL;
520 }
521 if (style->stroke.value.href) {
522 style->stroke_ps_modified_connection.disconnect();
523 delete style->stroke.value.href;
524 style->stroke.value.href = NULL;
525 }
526 if (style->filter.href) {
527 style->filter_modified_connection.disconnect();
528 delete style->filter.href;
529 style->filter.href = NULL;
530 }
532 style->filter_modified_connection.~connection();
533 style->fill_ps_modified_connection.~connection();
534 style->stroke_ps_modified_connection.~connection();
536 style->fill.clear();
537 style->stroke.clear();
538 sp_style_filter_clear(style);
540 g_free(style->stroke_dash.dash);
541 g_free(style);
542 }
544 return NULL;
545 }
547 /**
548 * Reads the various style parameters for an object from repr.
549 */
550 static void
551 sp_style_read(SPStyle *style, SPObject *object, Inkscape::XML::Node *repr)
552 {
553 g_assert(style != NULL);
554 g_assert(repr != NULL);
555 g_assert(!object || (SP_OBJECT_REPR(object) == repr));
557 sp_style_clear(style);
559 if (object && SP_OBJECT_IS_CLONED(object)) {
560 style->cloned = true;
561 }
563 /* 1. Style attribute */
564 gchar const *val = repr->attribute("style");
565 if (val != NULL) {
566 sp_style_merge_from_style_string(style, val);
567 }
569 if (object) {
570 sp_style_merge_from_object_stylesheet(style, object);
571 } else {
572 /** \todo No stylesheet information. Find out under what circumstances
573 * this occurs, and handle accordingly. (If we really wanted to, we
574 * could probably get stylesheets by going through repr->doc.)
575 */
576 }
578 /* 2. Presentation attributes */
579 /* CSS2 */
580 SPS_READ_PENUM_IF_UNSET(&style->visibility, repr, "visibility", enum_visibility, true);
581 SPS_READ_PENUM_IF_UNSET(&style->display, repr, "display", enum_display, true);
582 SPS_READ_PENUM_IF_UNSET(&style->overflow, repr, "overflow", enum_overflow, true);
583 /* Font */
584 SPS_READ_PFONTSIZE_IF_UNSET(&style->font_size, repr, "font-size");
585 SPS_READ_PENUM_IF_UNSET(&style->font_style, repr, "font-style", enum_font_style, true);
586 SPS_READ_PENUM_IF_UNSET(&style->font_variant, repr, "font-variant", enum_font_variant, true);
587 SPS_READ_PENUM_IF_UNSET(&style->font_weight, repr, "font-weight", enum_font_weight, true);
588 SPS_READ_PENUM_IF_UNSET(&style->font_stretch, repr, "font-stretch", enum_font_stretch, true);
589 /* Text (css2 chapter 16) */
590 SPS_READ_PLENGTH_IF_UNSET(&style->text_indent, repr, "text-indent");
591 SPS_READ_PENUM_IF_UNSET(&style->text_align, repr, "text-align", enum_text_align, true);
592 if (!style->text_decoration.set) {
593 val = repr->attribute("text-decoration");
594 if (val) {
595 sp_style_read_itextdecoration(&style->text_decoration, val);
596 }
597 }
598 if (!style->line_height.set) {
599 val = repr->attribute("line-height");
600 if (val) {
601 sp_style_read_ilengthornormal(&style->line_height, val);
602 }
603 }
604 if (!style->letter_spacing.set) {
605 val = repr->attribute("letter-spacing");
606 if (val) {
607 sp_style_read_ilengthornormal(&style->letter_spacing, val);
608 }
609 }
610 if (!style->word_spacing.set) {
611 val = repr->attribute("word-spacing");
612 if (val) {
613 sp_style_read_ilengthornormal(&style->word_spacing, val);
614 }
615 }
616 SPS_READ_PENUM_IF_UNSET(&style->text_transform, repr, "text-transform", enum_text_transform, true);
617 SPS_READ_PENUM_IF_UNSET(&style->direction, repr, "direction", enum_direction, true);
618 SPS_READ_PENUM_IF_UNSET(&style->block_progression, repr, "block_progression", enum_block_progression, true);
620 /* SVG */
621 SPS_READ_PENUM_IF_UNSET(&style->writing_mode, repr, "writing-mode",
622 enum_writing_mode, true);
623 SPS_READ_PENUM_IF_UNSET(&style->text_anchor, repr, "text-anchor",
624 enum_text_anchor, true);
626 /* opacity */
627 if (!style->opacity.set) {
628 val = repr->attribute("opacity");
629 if (val) {
630 sp_style_read_iscale24(&style->opacity, val);
631 }
632 }
633 /* color */
634 if (!style->color.set) {
635 val = repr->attribute("color");
636 if (val) {
637 sp_style_read_icolor(&style->color, val, style, ( object
638 ? SP_OBJECT_DOCUMENT(object)
639 : NULL ));
640 }
641 }
642 /* fill */
643 if (!style->fill.set) {
644 val = repr->attribute("fill");
645 if (val) {
646 sp_style_read_ipaint(&style->fill, val, style, (object) ? SP_OBJECT_DOCUMENT(object) : NULL);
647 }
648 }
649 /* fill-opacity */
650 if (!style->fill_opacity.set) {
651 val = repr->attribute("fill-opacity");
652 if (val) {
653 sp_style_read_iscale24(&style->fill_opacity, val);
654 }
655 }
656 /* fill-rule */
657 SPS_READ_PENUM_IF_UNSET(&style->fill_rule, repr, "fill-rule", enum_fill_rule, true);
658 /* stroke */
659 if (!style->stroke.set) {
660 val = repr->attribute("stroke");
661 if (val) {
662 sp_style_read_ipaint(&style->stroke, val, style, (object) ? SP_OBJECT_DOCUMENT(object) : NULL);
663 }
664 }
665 SPS_READ_PLENGTH_IF_UNSET(&style->stroke_width, repr, "stroke-width");
666 SPS_READ_PENUM_IF_UNSET(&style->stroke_linecap, repr, "stroke-linecap", enum_stroke_linecap, true);
667 SPS_READ_PENUM_IF_UNSET(&style->stroke_linejoin, repr, "stroke-linejoin", enum_stroke_linejoin, true);
668 SPS_READ_PFLOAT_IF_UNSET(&style->stroke_miterlimit, repr, "stroke-miterlimit");
670 /* markers */
671 if (!style->marker[SP_MARKER_LOC].set) {
672 val = repr->attribute("marker");
673 if (val) {
674 sp_style_read_istring(&style->marker[SP_MARKER_LOC], val);
675 }
676 }
677 if (!style->marker[SP_MARKER_LOC_START].set) {
678 val = repr->attribute("marker-start");
679 if (val) {
680 sp_style_read_istring(&style->marker[SP_MARKER_LOC_START], val);
681 }
682 }
683 if (!style->marker[SP_MARKER_LOC_MID].set) {
684 val = repr->attribute("marker-mid");
685 if (val) {
686 sp_style_read_istring(&style->marker[SP_MARKER_LOC_MID], val);
687 }
688 }
689 if (!style->marker[SP_MARKER_LOC_END].set) {
690 val = repr->attribute("marker-end");
691 if (val) {
692 sp_style_read_istring(&style->marker[SP_MARKER_LOC_END], val);
693 }
694 }
696 /* stroke-opacity */
697 if (!style->stroke_opacity.set) {
698 val = repr->attribute("stroke-opacity");
699 if (val) {
700 sp_style_read_iscale24(&style->stroke_opacity, val);
701 }
702 }
703 if (!style->stroke_dasharray_set) {
704 val = repr->attribute("stroke-dasharray");
705 if (val) {
706 sp_style_read_dash(style, val);
707 }
708 }
709 if (!style->stroke_dashoffset_set) {
710 /* fixme */
711 val = repr->attribute("stroke-dashoffset");
712 if (sp_svg_number_read_d(val, &style->stroke_dash.offset)) {
713 style->stroke_dashoffset_set = TRUE;
714 } else {
715 style->stroke_dashoffset_set = FALSE;
716 }
717 }
719 /* font-family */
720 if (!style->text_private || !style->text->font_family.set) {
721 val = repr->attribute("font-family");
722 if (val) {
723 if (!style->text_private) sp_style_privatize_text(style);
724 gchar *val_unquoted = attribute_unquote(val);
725 sp_style_read_istring(&style->text->font_family, val_unquoted);
726 if (val_unquoted) g_free (val_unquoted);
727 }
728 }
730 /* filter effects */
731 if (!style->filter.set) {
732 val = repr->attribute("filter");
733 if (val) {
734 sp_style_read_ifilter(val, style, (object) ? SP_OBJECT_DOCUMENT(object) : NULL);
735 }
736 }
737 SPS_READ_PENUM_IF_UNSET(&style->enable_background, repr,
738 "enable-background", enum_enable_background, true);
740 /* 3. Merge from parent */
741 if (object) {
742 if (object->parent) {
743 sp_style_merge_from_parent(style, SP_OBJECT_STYLE(object->parent));
744 }
745 } else {
746 if (sp_repr_parent(repr)) {
747 /// \todo fixme: This is not the prettiest thing (Lauris)
748 SPStyle *parent = sp_style_new(NULL);
749 sp_style_read(parent, NULL, sp_repr_parent(repr));
750 sp_style_merge_from_parent(style, parent);
751 sp_style_unref(parent);
752 }
753 }
754 }
757 /**
758 * Read style properties from object's repr.
759 *
760 * 1. Reset existing object style
761 * 2. Load current effective object style
762 * 3. Load i attributes from immediate parent (which has to be up-to-date)
763 */
764 void
765 sp_style_read_from_object(SPStyle *style, SPObject *object)
766 {
767 g_return_if_fail(style != NULL);
768 g_return_if_fail(object != NULL);
769 g_return_if_fail(SP_IS_OBJECT(object));
771 Inkscape::XML::Node *repr = SP_OBJECT_REPR(object);
772 g_return_if_fail(repr != NULL);
774 sp_style_read(style, object, repr);
775 }
778 /**
779 * Read style properties from repr only.
780 */
781 void
782 sp_style_read_from_repr(SPStyle *style, Inkscape::XML::Node *repr)
783 {
784 g_return_if_fail(style != NULL);
785 g_return_if_fail(repr != NULL);
787 sp_style_read(style, NULL, repr);
788 }
792 /**
793 *
794 */
795 static void
796 sp_style_privatize_text(SPStyle *style)
797 {
798 SPTextStyle *text = style->text;
799 style->text = sp_text_style_duplicate_unset(style->text);
800 sp_text_style_unref(text);
801 style->text_private = TRUE;
802 }
805 /**
806 * Merge property into style.
807 *
808 * Should be called in order of highest to lowest precedence.
809 * E.g. for a single style string, call from the last declaration to the first,
810 * as CSS says that later declarations override earlier ones.
811 *
812 * \pre val != NULL.
813 */
814 static void
815 sp_style_merge_property(SPStyle *style, gint id, gchar const *val)
816 {
817 g_return_if_fail(val != NULL);
819 switch (id) {
820 /* CSS2 */
821 /* Font */
822 case SP_PROP_FONT_FAMILY:
823 if (!style->text_private) sp_style_privatize_text(style);
824 if (!style->text->font_family.set) {
825 gchar *val_unquoted = attribute_unquote(val);
826 sp_style_read_istring(&style->text->font_family, val_unquoted);
827 if (val_unquoted) g_free (val_unquoted);
828 }
829 break;
830 case SP_PROP_FONT_SIZE:
831 SPS_READ_IFONTSIZE_IF_UNSET(&style->font_size, val);
832 break;
833 case SP_PROP_FONT_SIZE_ADJUST:
834 if (strcmp(val, "none") != 0) {
835 g_warning("Unimplemented style property id SP_PROP_FONT_SIZE_ADJUST: value: %s", val);
836 }
837 break;
838 case SP_PROP_FONT_STYLE:
839 SPS_READ_IENUM_IF_UNSET(&style->font_style, val, enum_font_style, true);
840 break;
841 case SP_PROP_FONT_VARIANT:
842 SPS_READ_IENUM_IF_UNSET(&style->font_variant, val, enum_font_variant, true);
843 break;
844 case SP_PROP_FONT_WEIGHT:
845 SPS_READ_IENUM_IF_UNSET(&style->font_weight, val, enum_font_weight, true);
846 break;
847 case SP_PROP_FONT_STRETCH:
848 SPS_READ_IENUM_IF_UNSET(&style->font_stretch, val, enum_font_stretch, true);
849 break;
850 case SP_PROP_FONT:
851 if (!style->text_private) sp_style_privatize_text(style);
852 if (!style->text->font.set) {
853 g_free(style->text->font.value);
854 style->text->font.value = g_strdup(val);
855 style->text->font.set = TRUE;
856 style->text->font.inherit = (val && !strcmp(val, "inherit"));
857 }
858 break;
859 /* Text */
860 case SP_PROP_TEXT_INDENT:
861 SPS_READ_ILENGTH_IF_UNSET(&style->text_indent, val);
862 break;
863 case SP_PROP_TEXT_ALIGN:
864 SPS_READ_IENUM_IF_UNSET(&style->text_align, val, enum_text_align, true);
865 break;
866 case SP_PROP_TEXT_DECORATION:
867 if (!style->text_decoration.set) {
868 sp_style_read_itextdecoration(&style->text_decoration, val);
869 }
870 break;
871 case SP_PROP_LINE_HEIGHT:
872 if (!style->line_height.set) {
873 sp_style_read_ilengthornormal(&style->line_height, val);
874 }
875 break;
876 case SP_PROP_LETTER_SPACING:
877 if (!style->letter_spacing.set) {
878 sp_style_read_ilengthornormal(&style->letter_spacing, val);
879 }
880 break;
881 case SP_PROP_WORD_SPACING:
882 if (!style->word_spacing.set) {
883 sp_style_read_ilengthornormal(&style->word_spacing, val);
884 }
885 break;
886 case SP_PROP_TEXT_TRANSFORM:
887 SPS_READ_IENUM_IF_UNSET(&style->text_transform, val, enum_text_transform, true);
888 break;
889 /* Text (css3) */
890 case SP_PROP_DIRECTION:
891 SPS_READ_IENUM_IF_UNSET(&style->direction, val, enum_direction, true);
892 break;
893 case SP_PROP_BLOCK_PROGRESSION:
894 SPS_READ_IENUM_IF_UNSET(&style->block_progression, val, enum_block_progression, true);
895 break;
896 case SP_PROP_WRITING_MODE:
897 SPS_READ_IENUM_IF_UNSET(&style->writing_mode, val, enum_writing_mode, true);
898 break;
899 case SP_PROP_TEXT_ANCHOR:
900 SPS_READ_IENUM_IF_UNSET(&style->text_anchor, val, enum_text_anchor, true);
901 break;
902 /* Text (unimplemented) */
903 case SP_PROP_TEXT_RENDERING: {
904 /* Ignore the hint. */
905 SPIEnum dummy;
906 SPS_READ_IENUM_IF_UNSET(&dummy, val, enum_text_rendering, true);
907 break;
908 }
909 case SP_PROP_ALIGNMENT_BASELINE:
910 g_warning("Unimplemented style property SP_PROP_ALIGNMENT_BASELINE: value: %s", val);
911 break;
912 case SP_PROP_BASELINE_SHIFT:
913 g_warning("Unimplemented style property SP_PROP_BASELINE_SHIFT: value: %s", val);
914 break;
915 case SP_PROP_DOMINANT_BASELINE:
916 g_warning("Unimplemented style property SP_PROP_DOMINANT_BASELINE: value: %s", val);
917 break;
918 case SP_PROP_GLYPH_ORIENTATION_HORIZONTAL:
919 g_warning("Unimplemented style property SP_PROP_ORIENTATION_HORIZONTAL: value: %s", val);
920 break;
921 case SP_PROP_GLYPH_ORIENTATION_VERTICAL:
922 g_warning("Unimplemented style property SP_PROP_ORIENTATION_VERTICAL: value: %s", val);
923 break;
924 case SP_PROP_KERNING:
925 g_warning("Unimplemented style property SP_PROP_KERNING: value: %s", val);
926 break;
927 /* Misc */
928 case SP_PROP_CLIP:
929 g_warning("Unimplemented style property SP_PROP_CLIP: value: %s", val);
930 break;
931 case SP_PROP_COLOR:
932 if (!style->color.set) {
933 sp_style_read_icolor(&style->color, val, style, (style->object) ? SP_OBJECT_DOCUMENT(style->object) : NULL);
934 }
935 break;
936 case SP_PROP_CURSOR:
937 g_warning("Unimplemented style property SP_PROP_CURSOR: value: %s", val);
938 break;
939 case SP_PROP_DISPLAY:
940 SPS_READ_IENUM_IF_UNSET(&style->display, val, enum_display, true);
941 break;
942 case SP_PROP_OVERFLOW:
943 /** \todo
944 * FIXME: not supported properly yet, we just read and write it,
945 * but act as if it is always "display".
946 */
947 SPS_READ_IENUM_IF_UNSET(&style->overflow, val, enum_overflow, true);
948 break;
949 case SP_PROP_VISIBILITY:
950 SPS_READ_IENUM_IF_UNSET(&style->visibility, val, enum_visibility, true);
951 break;
952 /* SVG */
953 /* Clip/Mask */
954 case SP_PROP_CLIP_PATH:
955 g_warning("Unimplemented style property SP_PROP_CLIP_PATH: value: %s", val);
956 break;
957 case SP_PROP_CLIP_RULE:
958 g_warning("Unimplemented style property SP_PROP_CLIP_RULE: value: %s", val);
959 break;
960 case SP_PROP_MASK:
961 g_warning("Unimplemented style property SP_PROP_MASK: value: %s", val);
962 break;
963 case SP_PROP_OPACITY:
964 if (!style->opacity.set) {
965 sp_style_read_iscale24(&style->opacity, val);
966 }
967 break;
968 case SP_PROP_ENABLE_BACKGROUND:
969 SPS_READ_IENUM_IF_UNSET(&style->enable_background, val,
970 enum_enable_background, true);
971 break;
972 /* Filter */
973 case SP_PROP_FILTER:
974 if (!style->filter.set && !style->filter.inherit) {
975 sp_style_read_ifilter(val, style, (style->object) ? SP_OBJECT_DOCUMENT(style->object) : NULL);
976 }
977 break;
978 case SP_PROP_FLOOD_COLOR:
979 g_warning("Unimplemented style property SP_PROP_FLOOD_COLOR: value: %s", val);
980 break;
981 case SP_PROP_FLOOD_OPACITY:
982 g_warning("Unimplemented style property SP_PROP_FLOOD_OPACITY: value: %s", val);
983 break;
984 case SP_PROP_LIGHTING_COLOR:
985 g_warning("Unimplemented style property SP_PROP_LIGHTING_COLOR: value: %s", val);
986 break;
987 /* Gradient */
988 case SP_PROP_STOP_COLOR:
989 g_warning("Unimplemented style property SP_PROP_STOP_COLOR: value: %s", val);
990 break;
991 case SP_PROP_STOP_OPACITY:
992 g_warning("Unimplemented style property SP_PROP_STOP_OPACITY: value: %s", val);
993 break;
994 /* Interactivity */
995 case SP_PROP_POINTER_EVENTS:
996 g_warning("Unimplemented style property SP_PROP_POINTER_EVENTS: value: %s", val);
997 break;
998 /* Paint */
999 case SP_PROP_COLOR_INTERPOLATION:
1000 g_warning("Unimplemented style property SP_PROP_COLOR_INTERPOLATION: value: %s", val);
1001 break;
1002 case SP_PROP_COLOR_INTERPOLATION_FILTERS:
1003 g_warning("Unimplemented style property SP_PROP_INTERPOLATION_FILTERS: value: %s", val);
1004 break;
1005 case SP_PROP_COLOR_PROFILE:
1006 g_warning("Unimplemented style property SP_PROP_COLOR_PROFILE: value: %s", val);
1007 break;
1008 case SP_PROP_COLOR_RENDERING: {
1009 /* Ignore the hint. */
1010 SPIEnum dummy;
1011 SPS_READ_IENUM_IF_UNSET(&dummy, val, enum_color_rendering, true);
1012 break;
1013 }
1014 case SP_PROP_FILL:
1015 if (!style->fill.set) {
1016 sp_style_read_ipaint(&style->fill, val, style, (style->object) ? SP_OBJECT_DOCUMENT(style->object) : NULL);
1017 }
1018 break;
1019 case SP_PROP_FILL_OPACITY:
1020 if (!style->fill_opacity.set) {
1021 sp_style_read_iscale24(&style->fill_opacity, val);
1022 }
1023 break;
1024 case SP_PROP_FILL_RULE:
1025 if (!style->fill_rule.set) {
1026 sp_style_read_ienum(&style->fill_rule, val, enum_fill_rule, true);
1027 }
1028 break;
1029 case SP_PROP_IMAGE_RENDERING: {
1030 /* Ignore the hint. */
1031 SPIEnum dummy;
1032 SPS_READ_IENUM_IF_UNSET(&dummy, val, enum_image_rendering, true);
1033 break;
1034 }
1035 case SP_PROP_MARKER:
1036 /* TODO: Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */
1037 /* style->marker[SP_MARKER_LOC] = g_quark_from_string(val); */
1038 if (!style->marker[SP_MARKER_LOC].set) {
1039 g_free(style->marker[SP_MARKER_LOC].value);
1040 style->marker[SP_MARKER_LOC].value = g_strdup(val);
1041 style->marker[SP_MARKER_LOC].set = TRUE;
1042 style->marker[SP_MARKER_LOC].inherit = (val && !strcmp(val, "inherit"));
1043 }
1044 break;
1046 case SP_PROP_MARKER_START:
1047 /* TODO: Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */
1048 if (!style->marker[SP_MARKER_LOC_START].set) {
1049 g_free(style->marker[SP_MARKER_LOC_START].value);
1050 style->marker[SP_MARKER_LOC_START].value = g_strdup(val);
1051 style->marker[SP_MARKER_LOC_START].set = TRUE;
1052 style->marker[SP_MARKER_LOC_START].inherit = (val && !strcmp(val, "inherit"));
1053 }
1054 break;
1055 case SP_PROP_MARKER_MID:
1056 /* TODO: Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */
1057 if (!style->marker[SP_MARKER_LOC_MID].set) {
1058 g_free(style->marker[SP_MARKER_LOC_MID].value);
1059 style->marker[SP_MARKER_LOC_MID].value = g_strdup(val);
1060 style->marker[SP_MARKER_LOC_MID].set = TRUE;
1061 style->marker[SP_MARKER_LOC_MID].inherit = (val && !strcmp(val, "inherit"));
1062 }
1063 break;
1064 case SP_PROP_MARKER_END:
1065 /* TODO: Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */
1066 if (!style->marker[SP_MARKER_LOC_END].set) {
1067 g_free(style->marker[SP_MARKER_LOC_END].value);
1068 style->marker[SP_MARKER_LOC_END].value = g_strdup(val);
1069 style->marker[SP_MARKER_LOC_END].set = TRUE;
1070 style->marker[SP_MARKER_LOC_END].inherit = (val && !strcmp(val, "inherit"));
1071 }
1072 break;
1074 case SP_PROP_SHAPE_RENDERING: {
1075 /* Ignore the hint. */
1076 SPIEnum dummy;
1077 SPS_READ_IENUM_IF_UNSET(&dummy, val, enum_shape_rendering, true);
1078 break;
1079 }
1081 case SP_PROP_STROKE:
1082 if (!style->stroke.set) {
1083 sp_style_read_ipaint(&style->stroke, val, style, (style->object) ? SP_OBJECT_DOCUMENT(style->object) : NULL);
1084 }
1085 break;
1086 case SP_PROP_STROKE_WIDTH:
1087 SPS_READ_ILENGTH_IF_UNSET(&style->stroke_width, val);
1088 break;
1089 case SP_PROP_STROKE_DASHARRAY:
1090 if (!style->stroke_dasharray_set) {
1091 sp_style_read_dash(style, val);
1092 }
1093 break;
1094 case SP_PROP_STROKE_DASHOFFSET:
1095 if (!style->stroke_dashoffset_set) {
1096 /* fixme */
1097 if (sp_svg_number_read_d(val, &style->stroke_dash.offset)) {
1098 style->stroke_dashoffset_set = TRUE;
1099 } else {
1100 style->stroke_dashoffset_set = FALSE;
1101 }
1102 }
1103 break;
1104 case SP_PROP_STROKE_LINECAP:
1105 if (!style->stroke_linecap.set) {
1106 sp_style_read_ienum(&style->stroke_linecap, val, enum_stroke_linecap, true);
1107 }
1108 break;
1109 case SP_PROP_STROKE_LINEJOIN:
1110 if (!style->stroke_linejoin.set) {
1111 sp_style_read_ienum(&style->stroke_linejoin, val, enum_stroke_linejoin, true);
1112 }
1113 break;
1114 case SP_PROP_STROKE_MITERLIMIT:
1115 if (!style->stroke_miterlimit.set) {
1116 sp_style_read_ifloat(&style->stroke_miterlimit, val);
1117 }
1118 break;
1119 case SP_PROP_STROKE_OPACITY:
1120 if (!style->stroke_opacity.set) {
1121 sp_style_read_iscale24(&style->stroke_opacity, val);
1122 }
1123 break;
1125 default:
1126 g_warning("Invalid style property id: %d value: %s", id, val);
1127 break;
1128 }
1129 }
1131 static void
1132 sp_style_merge_style_from_decl(SPStyle *const style, CRDeclaration const *const decl)
1133 {
1134 /** \todo Ensure that property is lcased, as per
1135 * http://www.w3.org/TR/REC-CSS2/syndata.html#q4.
1136 * Should probably be done in libcroco.
1137 */
1138 unsigned const prop_idx = sp_attribute_lookup(decl->property->stryng->str);
1139 if (prop_idx != SP_ATTR_INVALID) {
1140 /** \todo
1141 * effic: Test whether the property is already set before trying to
1142 * convert to string. Alternatively, set from CRTerm directly rather
1143 * than converting to string.
1144 */
1145 guchar *const str_value_unsigned = cr_term_to_string(decl->value);
1146 gchar *const str_value = reinterpret_cast<gchar *>(str_value_unsigned);
1147 sp_style_merge_property(style, prop_idx, str_value);
1148 g_free(str_value);
1149 }
1150 }
1152 static void
1153 sp_style_merge_from_props(SPStyle *const style, CRPropList *const props)
1154 {
1155 #if 0 /* forwards */
1156 for (CRPropList const *cur = props; cur; cur = cr_prop_list_get_next(cur)) {
1157 CRDeclaration *decl = NULL;
1158 cr_prop_list_get_decl(cur, &decl);
1159 sp_style_merge_style_from_decl(style, decl);
1160 }
1161 #else /* in reverse order, as we need later declarations to take precedence over earlier ones. */
1162 if (props) {
1163 sp_style_merge_from_props(style, cr_prop_list_get_next(props));
1164 CRDeclaration *decl = NULL;
1165 cr_prop_list_get_decl(props, &decl);
1166 sp_style_merge_style_from_decl(style, decl);
1167 }
1168 #endif
1169 }
1171 /**
1172 * \pre decl_list != NULL
1173 */
1174 static void
1175 sp_style_merge_from_decl_list(SPStyle *const style, CRDeclaration const *const decl_list)
1176 {
1177 // read the decls from end to start, using head recursion, so that latter declarations override
1178 // (Ref: http://www.w3.org/TR/REC-CSS2/cascade.html#cascading-order point 4.)
1179 // because sp_style_merge_style_from_decl only sets properties that are unset
1180 if (decl_list->next) {
1181 sp_style_merge_from_decl_list(style, decl_list->next);
1182 }
1183 sp_style_merge_style_from_decl(style, decl_list);
1184 }
1186 static CRSelEng *
1187 sp_repr_sel_eng()
1188 {
1189 CRSelEng *const ret = cr_sel_eng_new();
1190 cr_sel_eng_set_node_iface(ret, &Inkscape::XML::croco_node_iface);
1192 /** \todo
1193 * Check whether we need to register any pseudo-class handlers.
1194 * libcroco has its own default handlers for first-child and lang.
1195 *
1196 * We probably want handlers for link and arguably visited (though
1197 * inkscape can't visit links at the time of writing). hover etc.
1198 * more useful in inkview than the editor inkscape.
1199 *
1200 * http://www.w3.org/TR/SVG11/styling.html#StylingWithCSS says that
1201 * the following should be honoured, at least by inkview:
1202 * :hover, :active, :focus, :visited, :link.
1203 */
1205 g_assert(ret);
1206 return ret;
1207 }
1209 static void
1210 sp_style_merge_from_object_stylesheet(SPStyle *const style, SPObject const *const object)
1211 {
1212 static CRSelEng *sel_eng = NULL;
1213 if (!sel_eng) {
1214 sel_eng = sp_repr_sel_eng();
1215 }
1217 CRPropList *props = NULL;
1218 CRStatus status = cr_sel_eng_get_matched_properties_from_cascade(sel_eng,
1219 object->document->style_cascade,
1220 object->repr,
1221 &props);
1222 g_return_if_fail(status == CR_OK);
1223 /// \todo Check what errors can occur, and handle them properly.
1224 if (props) {
1225 sp_style_merge_from_props(style, props);
1226 cr_prop_list_destroy(props);
1227 }
1228 }
1230 /**
1231 * Parses a style="..." string and merges it with an existing SPStyle.
1232 */
1233 void
1234 sp_style_merge_from_style_string(SPStyle *const style, gchar const *const p)
1235 {
1236 /*
1237 * Reference: http://www.w3.org/TR/SVG11/styling.html#StyleAttribute:
1238 * ``When CSS styling is used, CSS inline style is specified by including
1239 * semicolon-separated property declarations of the form "name : value"
1240 * within the style attribute''.
1241 *
1242 * That's fairly ambiguous. Is a `value' allowed to contain semicolons?
1243 * Why does it say "including", what else is allowed in the style
1244 * attribute value?
1245 */
1247 CRDeclaration *const decl_list
1248 = cr_declaration_parse_list_from_buf(reinterpret_cast<guchar const *>(p), CR_UTF_8);
1249 if (decl_list) {
1250 sp_style_merge_from_decl_list(style, decl_list);
1251 cr_declaration_destroy(decl_list);
1252 }
1253 }
1255 /** Indexed by SP_CSS_FONT_SIZE_blah. */
1256 static float const font_size_table[] = {6.0, 8.0, 10.0, 12.0, 14.0, 18.0, 24.0};
1258 static void
1259 sp_style_merge_font_size_from_parent(SPIFontSize &child, SPIFontSize const &parent)
1260 {
1261 /* 'font-size' */
1262 if (!child.set || child.inherit) {
1263 /* Inherit the computed value. Reference: http://www.w3.org/TR/SVG11/styling.html#Inheritance */
1264 child.computed = parent.computed;
1265 } else if (child.type == SP_FONT_SIZE_LITERAL) {
1266 /** \todo
1267 * fixme: SVG and CSS do not specify clearly, whether we should use
1268 * user or screen coordinates (Lauris)
1269 */
1270 if (child.value < SP_CSS_FONT_SIZE_SMALLER) {
1271 child.computed = font_size_table[child.value];
1272 } else if (child.value == SP_CSS_FONT_SIZE_SMALLER) {
1273 child.computed = parent.computed / 1.2;
1274 } else if (child.value == SP_CSS_FONT_SIZE_LARGER) {
1275 child.computed = parent.computed * 1.2;
1276 } else {
1277 /* Illegal value */
1278 }
1279 } else if (child.type == SP_FONT_SIZE_PERCENTAGE) {
1280 /* Unlike most other lengths, percentage for font size is relative to parent computed value
1281 * rather than viewport. */
1282 child.computed = parent.computed * SP_F8_16_TO_FLOAT(child.value);
1283 }
1284 }
1286 /**
1287 * Sets computed values in \a style, which may involve inheriting from (or in some other way
1288 * calculating from) corresponding computed values of \a parent.
1289 *
1290 * References: http://www.w3.org/TR/SVG11/propidx.html shows what properties inherit by default.
1291 * http://www.w3.org/TR/SVG11/styling.html#Inheritance gives general rules as to what it means to
1292 * inherit a value. http://www.w3.org/TR/REC-CSS2/cascade.html#computed-value is more precise
1293 * about what the computed value is (not obvious for lengths).
1294 *
1295 * \pre \a parent's computed values are already up-to-date.
1296 */
1297 void
1298 sp_style_merge_from_parent(SPStyle *const style, SPStyle const *const parent)
1299 {
1300 g_return_if_fail(style != NULL);
1302 /** \todo
1303 * fixme: Check for existing callers that might pass null parent.
1304 * This should probably be g_return_if_fail, or else we should make a
1305 * best attempt to set computed values correctly without having a parent
1306 * (i.e., by assuming parent has initial values).
1307 */
1308 if (!parent)
1309 return;
1311 /* CSS2 */
1312 /* Font */
1313 sp_style_merge_font_size_from_parent(style->font_size, parent->font_size);
1315 /* 'font-style' */
1316 if (!style->font_style.set || style->font_style.inherit) {
1317 style->font_style.computed = parent->font_style.computed;
1318 }
1320 /* 'font-variant' */
1321 if (!style->font_variant.set || style->font_variant.inherit) {
1322 style->font_variant.computed = parent->font_variant.computed;
1323 }
1325 /* 'font-weight' */
1326 if (!style->font_weight.set || style->font_weight.inherit) {
1327 style->font_weight.computed = parent->font_weight.computed;
1328 } else if (style->font_weight.value == SP_CSS_FONT_WEIGHT_NORMAL) {
1329 /** \todo
1330 * fixme: This is unconditional, i.e., happens even if parent not
1331 * present.
1332 */
1333 style->font_weight.computed = SP_CSS_FONT_WEIGHT_400;
1334 } else if (style->font_weight.value == SP_CSS_FONT_WEIGHT_BOLD) {
1335 style->font_weight.computed = SP_CSS_FONT_WEIGHT_700;
1336 } else if (style->font_weight.value == SP_CSS_FONT_WEIGHT_LIGHTER) {
1337 unsigned const parent_val = parent->font_weight.computed;
1338 g_assert(SP_CSS_FONT_WEIGHT_100 == 0);
1339 // strictly, 'bolder' and 'lighter' should go to the next weight
1340 // expressible in the current font family, but that's difficult to
1341 // find out, so jumping by 3 seems an appropriate approximation
1342 style->font_weight.computed = (parent_val <= SP_CSS_FONT_WEIGHT_100 + 3
1343 ? (unsigned)SP_CSS_FONT_WEIGHT_100
1344 : parent_val - 3);
1345 g_assert(style->font_weight.computed <= (unsigned) SP_CSS_FONT_WEIGHT_900);
1346 } else if (style->font_weight.value == SP_CSS_FONT_WEIGHT_BOLDER) {
1347 unsigned const parent_val = parent->font_weight.computed;
1348 g_assert(parent_val <= SP_CSS_FONT_WEIGHT_900);
1349 style->font_weight.computed = (parent_val >= SP_CSS_FONT_WEIGHT_900 - 3
1350 ? (unsigned)SP_CSS_FONT_WEIGHT_900
1351 : parent_val + 3);
1352 g_assert(style->font_weight.computed <= (unsigned) SP_CSS_FONT_WEIGHT_900);
1353 }
1355 /* 'font-stretch' */
1356 if (!style->font_stretch.set || style->font_stretch.inherit) {
1357 style->font_stretch.computed = parent->font_stretch.computed;
1358 } else if (style->font_stretch.value == SP_CSS_FONT_STRETCH_NARROWER) {
1359 unsigned const parent_val = parent->font_stretch.computed;
1360 style->font_stretch.computed = (parent_val == SP_CSS_FONT_STRETCH_ULTRA_CONDENSED
1361 ? parent_val
1362 : parent_val - 1);
1363 g_assert(style->font_stretch.computed <= (unsigned) SP_CSS_FONT_STRETCH_ULTRA_EXPANDED);
1364 } else if (style->font_stretch.value == SP_CSS_FONT_STRETCH_WIDER) {
1365 unsigned const parent_val = parent->font_stretch.computed;
1366 g_assert(parent_val <= SP_CSS_FONT_STRETCH_ULTRA_EXPANDED);
1367 style->font_stretch.computed = (parent_val == SP_CSS_FONT_STRETCH_ULTRA_EXPANDED
1368 ? parent_val
1369 : parent_val + 1);
1370 g_assert(style->font_stretch.computed <= (unsigned) SP_CSS_FONT_STRETCH_ULTRA_EXPANDED);
1371 }
1373 /* text (css2) */
1374 if (!style->text_indent.set || style->text_indent.inherit) {
1375 style->text_indent.computed = parent->text_indent.computed;
1376 }
1378 if (!style->text_align.set || style->text_align.inherit) {
1379 style->text_align.computed = parent->text_align.computed;
1380 }
1382 if (!style->text_decoration.set || style->text_decoration.inherit) {
1383 style->text_decoration.underline = parent->text_decoration.underline;
1384 style->text_decoration.overline = parent->text_decoration.overline;
1385 style->text_decoration.line_through = parent->text_decoration.line_through;
1386 style->text_decoration.blink = parent->text_decoration.blink;
1387 }
1389 if (!style->line_height.set || style->line_height.inherit) {
1390 style->line_height.computed = parent->line_height.computed;
1391 style->line_height.normal = parent->line_height.normal;
1392 }
1394 if (!style->letter_spacing.set || style->letter_spacing.inherit) {
1395 style->letter_spacing.computed = parent->letter_spacing.computed;
1396 style->letter_spacing.normal = parent->letter_spacing.normal;
1397 }
1399 if (!style->word_spacing.set || style->word_spacing.inherit) {
1400 style->word_spacing.computed = parent->word_spacing.computed;
1401 style->word_spacing.normal = parent->word_spacing.normal;
1402 }
1404 if (!style->text_transform.set || style->text_transform.inherit) {
1405 style->text_transform.computed = parent->text_transform.computed;
1406 }
1408 if (!style->direction.set || style->direction.inherit) {
1409 style->direction.computed = parent->direction.computed;
1410 }
1412 if (!style->block_progression.set || style->block_progression.inherit) {
1413 style->block_progression.computed = parent->block_progression.computed;
1414 }
1416 if (!style->writing_mode.set || style->writing_mode.inherit) {
1417 style->writing_mode.computed = parent->writing_mode.computed;
1418 }
1420 if (!style->text_anchor.set || style->text_anchor.inherit) {
1421 style->text_anchor.computed = parent->text_anchor.computed;
1422 }
1424 if (style->opacity.inherit) {
1425 style->opacity.value = parent->opacity.value;
1426 }
1428 /* Color */
1429 if (!style->color.set || style->color.inherit) {
1430 sp_style_merge_ipaint(style, &style->color, &parent->color);
1431 }
1433 /* Fill */
1434 if (!style->fill.set || style->fill.inherit || style->fill.currentcolor) {
1435 sp_style_merge_ipaint(style, &style->fill, &parent->fill);
1436 }
1438 if (!style->fill_opacity.set || style->fill_opacity.inherit) {
1439 style->fill_opacity.value = parent->fill_opacity.value;
1440 }
1442 if (!style->fill_rule.set || style->fill_rule.inherit) {
1443 style->fill_rule.computed = parent->fill_rule.computed;
1444 }
1446 /* Stroke */
1447 if (!style->stroke.set || style->stroke.inherit || style->stroke.currentcolor) {
1448 sp_style_merge_ipaint(style, &style->stroke, &parent->stroke);
1449 }
1451 if (!style->stroke_width.set || style->stroke_width.inherit) {
1452 style->stroke_width.computed = parent->stroke_width.computed;
1453 } else {
1454 /* Update computed value for any change in font inherited from parent. */
1455 double const em = style->font_size.computed;
1456 if (style->stroke_width.unit == SP_CSS_UNIT_EM) {
1457 style->stroke_width.computed = style->stroke_width.value * em;
1458 } else if (style->stroke_width.unit == SP_CSS_UNIT_EX) {
1459 double const ex = em * 0.5; // fixme: Get x height from libnrtype or pango.
1460 style->stroke_width.computed = style->stroke_width.value * ex;
1461 }
1462 }
1464 if (!style->stroke_linecap.set || style->stroke_linecap.inherit) {
1465 style->stroke_linecap.computed = parent->stroke_linecap.computed;
1466 }
1468 if (!style->stroke_linejoin.set || style->stroke_linejoin.inherit) {
1469 style->stroke_linejoin.computed = parent->stroke_linejoin.computed;
1470 }
1472 if (!style->stroke_miterlimit.set || style->stroke_miterlimit.inherit) {
1473 style->stroke_miterlimit.value = parent->stroke_miterlimit.value;
1474 }
1476 if (!style->stroke_dasharray_set && parent->stroke_dasharray_set) {
1477 /** \todo
1478 * This code looks wrong. Why does the logic differ from the
1479 * above properties? Similarly dashoffset below.
1480 */
1481 style->stroke_dash.n_dash = parent->stroke_dash.n_dash;
1482 if (style->stroke_dash.n_dash > 0) {
1483 style->stroke_dash.dash = g_new(gdouble, style->stroke_dash.n_dash);
1484 memcpy(style->stroke_dash.dash, parent->stroke_dash.dash, style->stroke_dash.n_dash * sizeof(gdouble));
1485 }
1486 }
1488 if (!style->stroke_dashoffset_set && parent->stroke_dashoffset_set) {
1489 style->stroke_dash.offset = parent->stroke_dash.offset;
1490 }
1492 if (!style->stroke_opacity.set || style->stroke_opacity.inherit) {
1493 style->stroke_opacity.value = parent->stroke_opacity.value;
1494 }
1496 if (style->text && parent->text) {
1497 if (!style->text->font_family.set || style->text->font_family.inherit) {
1498 g_free(style->text->font_family.value);
1499 style->text->font_family.value = g_strdup(parent->text->font_family.value);
1500 }
1501 }
1503 /* Markers - Free the old value and make copy of the new */
1504 for (unsigned i = SP_MARKER_LOC; i < SP_MARKER_LOC_QTY; i++) {
1505 if (!style->marker[i].set || style->marker[i].inherit) {
1506 g_free(style->marker[i].value);
1507 style->marker[i].value = g_strdup(parent->marker[i].value);
1508 }
1509 }
1511 /* Filter effects */
1512 if (style->filter.inherit) {
1513 sp_style_merge_ifilter(style, &parent->filter);
1514 }
1516 if(style->enable_background.inherit) {
1517 style->enable_background.value = parent->enable_background.value;
1518 }
1519 }
1521 template <typename T>
1522 static void
1523 sp_style_merge_prop_from_dying_parent(T &child, T const &parent)
1524 {
1525 if ( ( !(child.set) || child.inherit )
1526 && parent.set && !(parent.inherit) )
1527 {
1528 child = parent;
1529 }
1530 }
1532 /**
1533 * Copy SPIString from parent to child.
1534 */
1535 static void
1536 sp_style_merge_string_prop_from_dying_parent(SPIString &child, SPIString const &parent)
1537 {
1538 if ( ( !(child.set) || child.inherit )
1539 && parent.set && !(parent.inherit) )
1540 {
1541 g_free(child.value);
1542 child.value = g_strdup(parent.value);
1543 child.set = parent.set;
1544 child.inherit = parent.inherit;
1545 }
1546 }
1548 static void
1549 sp_style_merge_paint_prop_from_dying_parent(SPStyle *style,
1550 SPIPaint &child, SPIPaint const &parent)
1551 {
1552 /** \todo
1553 * I haven't given this much attention. See comments below about
1554 * currentColor, colorProfile, and relative URIs.
1555 */
1556 if (!child.set || child.inherit || child.currentcolor) {
1557 sp_style_merge_ipaint(style, &child, &parent);
1558 child.set = parent.set;
1559 child.inherit = parent.inherit;
1560 }
1561 }
1563 static void
1564 sp_style_merge_rel_enum_prop_from_dying_parent(SPIEnum &child, SPIEnum const &parent,
1565 unsigned const max_computed_val,
1566 unsigned const smaller_val)
1567 {
1568 /* We assume that min computed val is 0, contiguous up to max_computed_val,
1569 then zero or more other absolute values, then smaller_val then larger_val. */
1570 unsigned const min_computed_val = 0;
1571 unsigned const larger_val = smaller_val + 1;
1572 g_return_if_fail(min_computed_val < max_computed_val);
1573 g_return_if_fail(max_computed_val < smaller_val);
1575 if (parent.set && !parent.inherit) {
1576 if (!child.set || child.inherit) {
1577 child.value = parent.value;
1578 child.set = parent.set; // i.e. true
1579 child.inherit = parent.inherit; // i.e. false
1580 } else if (child.value < smaller_val) {
1581 /* Child has absolute value: leave as is. */
1582 } else if ( ( child.value == smaller_val
1583 && parent.value == larger_val )
1584 || ( parent.value == smaller_val
1585 && child.value == larger_val ) )
1586 {
1587 child.set = false;
1588 /*
1589 * Note that this can result in a change in computed value in the
1590 * rare case that the parent's setting was a no-op (i.e. if the
1591 * parent's parent's computed value was already ultra-condensed or
1592 * ultra-expanded). However, I'd guess that the change is for the
1593 * better: I'd guess that if the properties were specified
1594 * relatively, then the intent is to counteract parent's effect.
1595 * I.e. I believe this is the best code even in that case.
1596 */
1597 } else if (child.value == parent.value) {
1598 /* Leave as is. */
1599 /** \todo
1600 * It's unclear what to do if style and parent specify the same
1601 * relative directive (narrower or wider). We can either convert
1602 * to absolute specification or coalesce to a single relative
1603 * request (of half the strength of the original pair).
1604 *
1605 * Converting to a single level of relative specification is a
1606 * better choice if the newly-unlinked clone is itself cloned to
1607 * other contexts (inheriting different font stretchiness): it
1608 * would preserve the effect that it will be narrower than
1609 * the inherited context in each case. The disadvantage is that
1610 * it will ~certainly affect the computed value of the
1611 * newly-unlinked clone.
1612 */
1613 } else {
1614 unsigned const parent_val = parent.computed;
1615 child.value = ( child.value == smaller_val
1616 ? ( parent_val == min_computed_val
1617 ? parent_val
1618 : parent_val - 1 )
1619 : ( parent_val == max_computed_val
1620 ? parent_val
1621 : parent_val + 1 ) );
1622 g_assert(child.value <= max_computed_val);
1623 child.inherit = false;
1624 g_assert(child.set);
1625 }
1626 }
1627 }
1629 template <typename LengthT>
1630 static void
1631 sp_style_merge_length_prop_from_dying_parent(LengthT &child, LengthT const &parent,
1632 double const parent_child_em_ratio)
1633 {
1634 if ( ( !(child.set) || child.inherit )
1635 && parent.set && !(parent.inherit) )
1636 {
1637 child = parent;
1638 switch (parent.unit) {
1639 case SP_CSS_UNIT_EM:
1640 case SP_CSS_UNIT_EX:
1641 child.value *= parent_child_em_ratio;
1642 /** \todo
1643 * fixme: Have separate ex ratio parameter.
1644 * Get x height from libnrtype or pango.
1645 */
1646 if (!isFinite(child.value)) {
1647 child.value = child.computed;
1648 child.unit = SP_CSS_UNIT_NONE;
1649 }
1650 break;
1652 default:
1653 break;
1654 }
1655 }
1656 }
1658 static double
1659 get_relative_font_size_frac(SPIFontSize const &font_size)
1660 {
1661 switch (font_size.type) {
1662 case SP_FONT_SIZE_LITERAL: {
1663 switch (font_size.value) {
1664 case SP_CSS_FONT_SIZE_SMALLER:
1665 return 5.0 / 6.0;
1667 case SP_CSS_FONT_SIZE_LARGER:
1668 return 6.0 / 5.0;
1670 default:
1671 g_assert_not_reached();
1672 }
1673 }
1675 case SP_FONT_SIZE_PERCENTAGE:
1676 return SP_F8_16_TO_FLOAT(font_size.value);
1678 case SP_FONT_SIZE_LENGTH:
1679 g_assert_not_reached();
1680 }
1681 g_assert_not_reached();
1682 }
1684 /**
1685 * Combine \a style and \a parent style specifications into a single style specification that
1686 * preserves (as much as possible) the effect of the existing \a style being a child of \a parent.
1687 *
1688 * Called when the parent repr is to be removed (e.g. the parent is a \<use\> element that is being
1689 * unlinked), in which case we copy/adapt property values that are explicitly set in \a parent,
1690 * trying to retain the same visual appearance once the parent is removed. Interesting cases are
1691 * when there is unusual interaction with the parent's value (opacity, display) or when the value
1692 * can be specified as relative to the parent computed value (font-size, font-weight etc.).
1693 *
1694 * Doesn't update computed values of \a style. For correctness, you should subsequently call
1695 * sp_style_merge_from_parent against the new parent (presumably \a parent's parent) even if \a
1696 * style was previously up-to-date wrt \a parent.
1697 *
1698 * \pre \a parent's computed values are already up-to-date.
1699 * (\a style's computed values needn't be up-to-date.)
1700 */
1701 void
1702 sp_style_merge_from_dying_parent(SPStyle *const style, SPStyle const *const parent)
1703 {
1704 /** \note
1705 * The general rule for each property is as follows:
1706 *
1707 * If style is set to an absolute value, then leave it as is.
1708 *
1709 * Otherwise (i.e. if style has a relative value):
1710 *
1711 * If parent is set to an absolute value, then set style to the computed value.
1712 *
1713 * Otherwise, calculate the combined relative value (e.g. multiplying the two percentages).
1714 */
1716 /* We do font-size first, to ensure that em size is up-to-date. */
1717 /** \todo
1718 * fixme: We'll need to have more font-related things up the top once
1719 * we're getting x-height from pango or libnrtype.
1720 */
1722 /* Some things that allow relative specifications. */
1723 {
1724 /* font-size. Note that we update the computed font-size of style,
1725 to assist in em calculations later in this function. */
1726 if (parent->font_size.set && !parent->font_size.inherit) {
1727 if (!style->font_size.set || style->font_size.inherit) {
1728 /* font_size inherits the computed value, so we can use the parent value
1729 * verbatim. */
1730 style->font_size = parent->font_size;
1731 } else if ( style->font_size.type == SP_FONT_SIZE_LENGTH ) {
1732 /* Child already has absolute size (stored in computed value), so do nothing. */
1733 } else if ( style->font_size.type == SP_FONT_SIZE_LITERAL
1734 && style->font_size.value < SP_CSS_FONT_SIZE_SMALLER ) {
1735 /* Child already has absolute size, but we ensure that the computed value
1736 is up-to-date. */
1737 unsigned const ix = style->font_size.value;
1738 g_assert(ix < G_N_ELEMENTS(font_size_table));
1739 style->font_size.computed = font_size_table[ix];
1740 } else {
1741 /* Child has relative size. */
1742 double const child_frac(get_relative_font_size_frac(style->font_size));
1743 style->font_size.set = true;
1744 style->font_size.inherit = false;
1745 style->font_size.computed = parent->font_size.computed * child_frac;
1747 if ( ( parent->font_size.type == SP_FONT_SIZE_LITERAL
1748 && parent->font_size.value < SP_CSS_FONT_SIZE_SMALLER )
1749 || parent->font_size.type == SP_FONT_SIZE_LENGTH )
1750 {
1751 /* Absolute value. */
1752 style->font_size.type = SP_FONT_SIZE_LENGTH;
1753 /* .value is unused for SP_FONT_SIZE_LENGTH. */
1754 } else {
1755 /* Relative value. */
1756 double const parent_frac(get_relative_font_size_frac(parent->font_size));
1757 style->font_size.type = SP_FONT_SIZE_PERCENTAGE;
1758 style->font_size.value = SP_F8_16_FROM_FLOAT(parent_frac * child_frac);
1759 }
1760 }
1761 }
1763 /* 'font-stretch' */
1764 sp_style_merge_rel_enum_prop_from_dying_parent(style->font_stretch,
1765 parent->font_stretch,
1766 SP_CSS_FONT_STRETCH_ULTRA_EXPANDED,
1767 SP_CSS_FONT_STRETCH_NARROWER);
1769 /* font-weight */
1770 sp_style_merge_rel_enum_prop_from_dying_parent(style->font_weight,
1771 parent->font_weight,
1772 SP_CSS_FONT_WEIGHT_900,
1773 SP_CSS_FONT_WEIGHT_LIGHTER);
1774 }
1777 /* Enum values that don't have any relative settings (other than `inherit'). */
1778 {
1779 SPIEnum SPStyle::*const fields[] = {
1780 //nyi: SPStyle::clip_rule,
1781 //nyi: SPStyle::color_interpolation,
1782 //nyi: SPStyle::color_interpolation_filters,
1783 //nyi: SPStyle::color_rendering,
1784 &SPStyle::direction,
1785 &SPStyle::fill_rule,
1786 &SPStyle::font_style,
1787 &SPStyle::font_variant,
1788 //nyi: SPStyle::image_rendering,
1789 //nyi: SPStyle::pointer_events,
1790 //nyi: SPStyle::shape_rendering,
1791 &SPStyle::stroke_linecap,
1792 &SPStyle::stroke_linejoin,
1793 &SPStyle::text_anchor,
1794 //nyi: &SPStyle::text_rendering,
1795 &SPStyle::visibility,
1796 &SPStyle::writing_mode
1797 };
1799 for (unsigned i = 0; i < G_N_ELEMENTS(fields); ++i) {
1800 SPIEnum SPStyle::*const fld = fields[i];
1801 sp_style_merge_prop_from_dying_parent<SPIEnum>(style->*fld, parent->*fld);
1802 }
1803 }
1805 /* A few other simple inheritance properties. */
1806 {
1807 sp_style_merge_prop_from_dying_parent<SPIScale24>(style->fill_opacity, parent->fill_opacity);
1808 sp_style_merge_prop_from_dying_parent<SPIScale24>(style->stroke_opacity, parent->stroke_opacity);
1809 sp_style_merge_prop_from_dying_parent<SPIFloat>(style->stroke_miterlimit, parent->stroke_miterlimit);
1811 /** \todo
1812 * We currently treat text-decoration as if it were a simple inherited
1813 * property (fixme). This code may need changing once we do the
1814 * special fill/stroke inheritance mentioned by the spec.
1815 */
1816 sp_style_merge_prop_from_dying_parent<SPITextDecoration>(style->text_decoration,
1817 parent->text_decoration);
1819 //nyi: font-size-adjust, // <number> | none | inherit
1820 //nyi: glyph-orientation-horizontal,
1821 //nyi: glyph-orientation-vertical,
1822 }
1824 /* Properties that involve length but are easy in other respects. */
1825 {
1826 /* The difficulty with lengths is that font-relative units need adjusting if the font
1827 * varies between parent & child.
1828 *
1829 * Lengths specified in the existing child can stay as they are: its computed font
1830 * specification should stay unchanged, so em & ex lengths should continue to mean the same
1831 * size.
1832 *
1833 * Lengths specified in the dying parent in em or ex need to be scaled according to the
1834 * ratio of em or ex size between parent & child.
1835 */
1836 double const parent_child_em_ratio = parent->font_size.computed / style->font_size.computed;
1838 SPILength SPStyle::*const lfields[] = {
1839 &SPStyle::stroke_width,
1840 &SPStyle::text_indent
1841 };
1842 for (unsigned i = 0; i < G_N_ELEMENTS(lfields); ++i) {
1843 SPILength SPStyle::*fld = lfields[i];
1844 sp_style_merge_length_prop_from_dying_parent<SPILength>(style->*fld,
1845 parent->*fld,
1846 parent_child_em_ratio);
1847 }
1849 SPILengthOrNormal SPStyle::*const nfields[] = {
1850 &SPStyle::letter_spacing,
1851 &SPStyle::line_height,
1852 &SPStyle::word_spacing
1853 };
1854 for (unsigned i = 0; i < G_N_ELEMENTS(nfields); ++i) {
1855 SPILengthOrNormal SPStyle::*fld = nfields[i];
1856 sp_style_merge_length_prop_from_dying_parent<SPILengthOrNormal>(style->*fld,
1857 parent->*fld,
1858 parent_child_em_ratio);
1859 }
1861 //nyi: &SPStyle::kerning: length or `auto'
1863 /* fixme: Move stroke-dash and stroke-dash-offset here once they
1864 can accept units. */
1865 }
1867 /* Properties that involve a URI but are easy in other respects. */
1868 {
1869 /** \todo
1870 * Could cause problems if original object was in another document
1871 * and it used a relative URL. (At the time of writing, we don't
1872 * allow hrefs to other documents, so this isn't a problem yet.)
1873 * Paint properties also allow URIs.
1874 */
1875 //nyi: cursor, // may involve change in effect, but we can't do much better
1876 //nyi: color-profile,
1878 // Markers (marker-start, marker-mid, marker-end).
1879 for (unsigned i = SP_MARKER_LOC; i < SP_MARKER_LOC_QTY; i++) {
1880 sp_style_merge_string_prop_from_dying_parent(style->marker[i], parent->marker[i]);
1881 }
1882 }
1884 /* CSS2 */
1885 /* Font */
1887 if (style->text && parent->text) {
1888 sp_style_merge_string_prop_from_dying_parent(style->text->font_family,
1889 parent->text->font_family);
1890 }
1892 /* Properties that don't inherit by default. Most of these need special handling. */
1893 {
1894 /*
1895 * opacity's effect is cumulative; we set the new value to the combined effect. The
1896 * default value for opacity is 1.0, not inherit. (Note that stroke-opacity and
1897 * fill-opacity are quite different from opacity, and don't need any special handling.)
1898 *
1899 * Cases:
1900 * - parent & child were each previously unset, in which case the effective
1901 * opacity value is 1.0, and style should remain unset.
1902 * - parent was previously unset (so computed opacity value of 1.0)
1903 * and child was set to inherit. The merged child should
1904 * get a value of 1.0, and shouldn't inherit (lest the new parent
1905 * has a different opacity value). Given that opacity's default
1906 * value is 1.0 (rather than inherit), we might as well have the
1907 * merged child's opacity be unset.
1908 * - parent was previously unset (so opacity 1.0), and child was set to a number.
1909 * The merged child should retain its existing settings (though it doesn't matter
1910 * if we make it unset if that number was 1.0).
1911 * - parent was inherit and child was unset. Merged child should be set to inherit.
1912 * - parent was inherit and child was inherit. (We can't in general reproduce this
1913 * effect (short of introducing a new group), but setting opacity to inherit is rare.)
1914 * If the inherited value was strictly between 0.0 and 1.0 (exclusive) then the merged
1915 * child's value should be set to the product of the two, i.e. the square of the
1916 * inherited value, and should not be marked as inherit. (This decision assumes that it
1917 * is more important to retain the effective opacity than to retain the inheriting
1918 * effect, and assumes that the inheriting effect either isn't important enough to create
1919 * a group or isn't common enough to bother maintaining the code to create a group.) If
1920 * the inherited value was 0.0 or 1.0, then marking the merged child as inherit comes
1921 * closer to maintaining the effect.
1922 * - parent was inherit and child was set to a numerical value. If the child's value
1923 * was 1.0, then the merged child should have the same settings as the parent.
1924 * If the child's value was 0, then the merged child should also be set to 0.
1925 * If the child's value was anything else, then we do the same as for the inherit/inherit
1926 * case above: have the merged child set to the product of the two opacities and not
1927 * marked as inherit, for the same reasons as for that case.
1928 * - parent was set to a value, and child was unset. The merged child should have
1929 * parent's settings.
1930 * - parent was set to a value, and child was inherit. The merged child should
1931 * be set to the product, i.e. the square of the parent's value.
1932 * - parent & child are each set to a value. The merged child should be set to the
1933 * product.
1934 */
1935 if ( !style->opacity.set
1936 || ( !style->opacity.inherit
1937 && style->opacity.value == SP_SCALE24_MAX ) )
1938 {
1939 style->opacity = parent->opacity;
1940 } else {
1941 /* Ensure that style's computed value is up-to-date. */
1942 if (style->opacity.inherit) {
1943 style->opacity.value = parent->opacity.value;
1944 }
1946 /* Multiplication of opacities occurs even if a child's opacity is set to inherit. */
1947 style->opacity.value = SP_SCALE24_MUL(style->opacity.value,
1948 parent->opacity.value);
1950 style->opacity.inherit = (parent->opacity.inherit
1951 && style->opacity.inherit
1952 && (parent->opacity.value == 0 ||
1953 parent->opacity.value == SP_SCALE24_MAX));
1954 style->opacity.set = ( style->opacity.inherit
1955 || style->opacity.value < SP_SCALE24_MAX );
1956 }
1958 /* display is in principle similar to opacity, but implementation is easier. */
1959 if ( parent->display.set && !parent->display.inherit
1960 && parent->display.value == SP_CSS_DISPLAY_NONE ) {
1961 style->display.value = SP_CSS_DISPLAY_NONE;
1962 style->display.set = true;
1963 style->display.inherit = false;
1964 } else if (style->display.inherit) {
1965 style->display.value = parent->display.value;
1966 style->display.set = parent->display.set;
1967 style->display.inherit = parent->display.inherit;
1968 } else {
1969 /* Leave as is. (display doesn't inherit by default.) */
1970 }
1972 /* enable-background - this is rather complicated, because
1973 * it is valid only when applied to container elements.
1974 * Let's check a simple case anyhow. */
1975 if (parent->enable_background.set
1976 && !parent->enable_background.inherit
1977 && style->enable_background.inherit)
1978 {
1979 style->enable_background.set = true;
1980 style->enable_background.inherit = false;
1981 style->enable_background.value = parent->enable_background.value;
1982 }
1984 if (!style->filter.set || style->filter.inherit)
1985 {
1986 // FIXME:
1987 // instead of just copying over, we need to _really merge_ the two filters by combining their
1988 // filter primitives
1989 sp_style_merge_ifilter(style, &parent->filter);
1990 }
1992 /** \todo
1993 * fixme: Check that we correctly handle all properties that don't
1994 * inherit by default (as shown in
1995 * http://www.w3.org/TR/SVG11/propidx.html for most SVG 1.1 properties).
1996 */
1997 }
1999 /* SPIPaint properties (including color). */
2000 {
2001 /** \todo
2002 * Think about the issues involved if specified as currentColor or
2003 * if specified relative to colorProfile, and if the currentColor or
2004 * colorProfile differs between parent \& child. See also comments
2005 * elsewhere in this function about URIs.
2006 */
2007 SPIPaint SPStyle::*const fields[] = {
2008 &SPStyle::color,
2009 &SPStyle::fill,
2010 &SPStyle::stroke
2011 };
2012 for (unsigned i = 0; i < G_N_ELEMENTS(fields); ++i) {
2013 SPIPaint SPStyle::*const fld = fields[i];
2014 sp_style_merge_paint_prop_from_dying_parent(style, style->*fld, parent->*fld);
2015 }
2016 }
2018 /* Things from SVG 1.2 or CSS3. */
2019 {
2020 /* Note: If we ever support setting string values for text-align then we'd need strdup
2021 * handling here. */
2022 sp_style_merge_prop_from_dying_parent<SPIEnum>(style->text_align, parent->text_align);
2024 sp_style_merge_prop_from_dying_parent<SPIEnum>(style->text_transform, parent->text_transform);
2025 sp_style_merge_prop_from_dying_parent<SPIEnum>(style->block_progression, parent->block_progression);
2026 }
2028 /* Note: this will need length handling once dasharray supports units. */
2029 if ( ( !style->stroke_dasharray_set || style->stroke_dasharray_inherit )
2030 && parent->stroke_dasharray_set && !parent->stroke_dasharray_inherit )
2031 {
2032 style->stroke_dash.n_dash = parent->stroke_dash.n_dash;
2033 if (style->stroke_dash.n_dash > 0) {
2034 style->stroke_dash.dash = g_new(gdouble, style->stroke_dash.n_dash);
2035 memcpy(style->stroke_dash.dash, parent->stroke_dash.dash, style->stroke_dash.n_dash * sizeof(gdouble));
2036 }
2037 style->stroke_dasharray_set = parent->stroke_dasharray_set;
2038 style->stroke_dasharray_inherit = parent->stroke_dasharray_inherit;
2039 }
2041 /* Note: this will need length handling once dasharray_offset supports units. */
2042 if (!style->stroke_dashoffset_set && parent->stroke_dashoffset_set) {
2043 style->stroke_dash.offset = parent->stroke_dash.offset;
2044 style->stroke_dashoffset_set = parent->stroke_dashoffset_set;
2045 /* fixme: we don't currently allow stroke-dashoffset to be `inherit'. TODO: Try to
2046 * represent it as a normal SPILength; though will need to do something about existing
2047 * users of stroke_dash.offset and stroke_dashoffset_set. */
2048 }
2049 }
2052 static void
2053 sp_style_set_ipaint_to_uri(SPStyle *style, SPIPaint *paint, const Inkscape::URI *uri, SPDocument *document)
2054 {
2055 // it may be that this style's SPIPaint has not yet created its URIReference;
2056 // now that we have a document, we can create it here
2057 if (!paint->value.href && document) {
2058 paint->value.href = new SPPaintServerReference(document);
2059 paint->value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun((paint == &style->fill)? sp_style_fill_paint_server_ref_changed : sp_style_stroke_paint_server_ref_changed), style));
2060 }
2062 if (paint->value.href && paint->value.href->getObject())
2063 paint->value.href->detach();
2065 if (paint->value.href) {
2066 try {
2067 paint->value.href->attach(*uri);
2068 } catch (Inkscape::BadURIException &e) {
2069 g_warning("%s", e.what());
2070 paint->value.href->detach();
2071 }
2072 }
2073 }
2075 static void
2076 sp_style_set_ipaint_to_uri_string (SPStyle *style, SPIPaint *paint, const gchar *uri)
2077 {
2078 const Inkscape::URI IURI(uri);
2079 sp_style_set_ipaint_to_uri(style, paint, &IURI, style->document);
2080 }
2082 void
2083 sp_style_set_to_uri_string (SPStyle *style, bool isfill, const gchar *uri)
2084 {
2085 sp_style_set_ipaint_to_uri_string (style, isfill? &style->fill : &style->stroke, uri);
2086 }
2088 /**
2089 *
2090 */
2091 static void
2092 sp_style_merge_ipaint(SPStyle *style, SPIPaint *paint, SPIPaint const *parent)
2093 {
2094 if ((paint->set && paint->currentcolor) || parent->currentcolor) {
2095 paint->clear();
2096 paint->currentcolor = TRUE;
2097 paint->setColor(style->color.value.color);
2098 return;
2099 }
2101 paint->clear();
2102 if ( parent->isPaintserver() ) {
2103 if (parent->value.href) {
2104 sp_style_set_ipaint_to_uri(style, paint, parent->value.href->getURI(), parent->value.href->getOwnerDocument());
2105 } else {
2106 g_warning("Expected paint server not found.");
2107 }
2108 } else if ( parent->isColor() ) {
2109 paint->setColor( parent->value.color );
2110 } else if ( parent->isNone() ) {
2111 //
2112 } else {
2113 g_assert_not_reached();
2114 }
2115 }
2118 /**
2119 * Merge filter style from parent.
2120 * Filter effects do not inherit by default
2121 */
2122 static void
2123 sp_style_merge_ifilter(SPStyle *style, SPIFilter const *parent)
2124 {
2125 sp_style_filter_clear(style);
2126 style->filter.set = parent->set;
2127 style->filter.inherit = parent->inherit;
2129 if (style->filter.href && style->filter.href->getObject())
2130 style->filter.href->detach();
2132 if (style->filter.href && parent->href) {
2133 try {
2134 style->filter.href->attach(*parent->href->getURI());
2135 } catch (Inkscape::BadURIException &e) {
2136 g_warning("%s", e.what());
2137 style->filter.href->detach();
2138 }
2139 }
2140 }
2142 /**
2143 * Dumps the style to a CSS string, with either SP_STYLE_FLAG_IFSET or
2144 * SP_STYLE_FLAG_ALWAYS flags. Used with Always for copying an object's
2145 * complete cascaded style to style_clipboard. When you need a CSS string
2146 * for an object in the document tree, you normally call
2147 * sp_style_write_difference instead to take into account the object's parent.
2148 *
2149 * \pre style != NULL.
2150 * \pre flags in {IFSET, ALWAYS}.
2151 * \post ret != NULL.
2152 */
2153 gchar *
2154 sp_style_write_string(SPStyle const *const style, guint const flags)
2155 {
2156 /** \todo
2157 * Merge with write_difference, much duplicate code!
2158 */
2159 g_return_val_if_fail(style != NULL, NULL);
2160 g_return_val_if_fail(((flags == SP_STYLE_FLAG_IFSET) ||
2161 (flags == SP_STYLE_FLAG_ALWAYS) ),
2162 NULL);
2164 gchar c[BMAX];
2165 gchar *p = c;
2166 *p = '\0';
2168 p += sp_style_write_ifontsize(p, c + BMAX - p, "font-size", &style->font_size, NULL, flags);
2169 p += sp_style_write_ienum(p, c + BMAX - p, "font-style", enum_font_style, &style->font_style, NULL, flags);
2170 p += sp_style_write_ienum(p, c + BMAX - p, "font-variant", enum_font_variant, &style->font_variant, NULL, flags);
2171 p += sp_style_write_ienum(p, c + BMAX - p, "font-weight", enum_font_weight, &style->font_weight, NULL, flags);
2172 p += sp_style_write_ienum(p, c + BMAX - p, "font-stretch", enum_font_stretch, &style->font_stretch, NULL, flags);
2174 /* Text */
2175 p += sp_style_write_ilength(p, c + BMAX - p, "text-indent", &style->text_indent, NULL, flags);
2176 p += sp_style_write_ienum(p, c + BMAX - p, "text-align", enum_text_align, &style->text_align, NULL, flags);
2177 p += sp_style_write_itextdecoration(p, c + BMAX - p, "text-decoration", &style->text_decoration, NULL, flags);
2178 p += sp_style_write_ilengthornormal(p, c + BMAX - p, "line-height", &style->line_height, NULL, flags);
2179 p += sp_style_write_ilengthornormal(p, c + BMAX - p, "letter-spacing", &style->letter_spacing, NULL, flags);
2180 p += sp_style_write_ilengthornormal(p, c + BMAX - p, "word-spacing", &style->word_spacing, NULL, flags);
2181 p += sp_style_write_ienum(p, c + BMAX - p, "text-transform", enum_text_transform, &style->text_transform, NULL, flags);
2182 p += sp_style_write_ienum(p, c + BMAX - p, "direction", enum_direction, &style->direction, NULL, flags);
2183 p += sp_style_write_ienum(p, c + BMAX - p, "block-progression", enum_block_progression, &style->block_progression, NULL, flags);
2184 p += sp_style_write_ienum(p, c + BMAX - p, "writing-mode", enum_writing_mode, &style->writing_mode, NULL, flags);
2186 p += sp_style_write_ienum(p, c + BMAX - p, "text-anchor", enum_text_anchor, &style->text_anchor, NULL, flags);
2188 /// \todo fixme: Per type methods need default flag too (lauris)
2189 p += sp_style_write_iscale24(p, c + BMAX - p, "opacity", &style->opacity, NULL, flags);
2190 p += sp_style_write_ipaint(p, c + BMAX - p, "color", &style->color, NULL, flags);
2191 p += sp_style_write_ipaint(p, c + BMAX - p, "fill", &style->fill, NULL, flags);
2192 p += sp_style_write_iscale24(p, c + BMAX - p, "fill-opacity", &style->fill_opacity, NULL, flags);
2193 p += sp_style_write_ienum(p, c + BMAX - p, "fill-rule", enum_fill_rule, &style->fill_rule, NULL, flags);
2194 p += sp_style_write_ipaint(p, c + BMAX - p, "stroke", &style->stroke, NULL, flags);
2195 p += sp_style_write_ilength(p, c + BMAX - p, "stroke-width", &style->stroke_width, NULL, flags);
2196 p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linecap", enum_stroke_linecap, &style->stroke_linecap, NULL, flags);
2197 p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linejoin", enum_stroke_linejoin, &style->stroke_linejoin, NULL, flags);
2199 if (style->marker[SP_MARKER_LOC].set) {
2200 p += g_snprintf(p, c + BMAX - p, "marker:%s;", style->marker[SP_MARKER_LOC].value);
2201 } else if (flags == SP_STYLE_FLAG_ALWAYS) {
2202 p += g_snprintf(p, c + BMAX - p, "marker:none;");
2203 }
2204 if (style->marker[SP_MARKER_LOC_START].set) {
2205 p += g_snprintf(p, c + BMAX - p, "marker-start:%s;", style->marker[SP_MARKER_LOC_START].value);
2206 } else if (flags == SP_STYLE_FLAG_ALWAYS) {
2207 p += g_snprintf(p, c + BMAX - p, "marker-start:none;");
2208 }
2209 if (style->marker[SP_MARKER_LOC_MID].set) {
2210 p += g_snprintf(p, c + BMAX - p, "marker-mid:%s;", style->marker[SP_MARKER_LOC_MID].value);
2211 } else if (flags == SP_STYLE_FLAG_ALWAYS) {
2212 p += g_snprintf(p, c + BMAX - p, "marker-mid:none;");
2213 }
2214 if (style->marker[SP_MARKER_LOC_END].set) {
2215 p += g_snprintf(p, c + BMAX - p, "marker-end:%s;", style->marker[SP_MARKER_LOC_END].value);
2216 } else if (flags == SP_STYLE_FLAG_ALWAYS) {
2217 p += g_snprintf(p, c + BMAX - p, "marker-end:none;");
2218 }
2220 p += sp_style_write_ifloat(p, c + BMAX - p, "stroke-miterlimit", &style->stroke_miterlimit, NULL, flags);
2222 /** \todo fixme: */
2223 if ((flags == SP_STYLE_FLAG_ALWAYS)
2224 || style->stroke_dasharray_set)
2225 {
2226 if (style->stroke_dasharray_inherit) {
2227 p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:inherit;");
2228 } else if (style->stroke_dash.n_dash && style->stroke_dash.dash) {
2229 p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:");
2230 gint i;
2231 for (i = 0; i < style->stroke_dash.n_dash; i++) {
2232 Inkscape::CSSOStringStream os;
2233 if (i) {
2234 os << ", ";
2235 }
2236 os << style->stroke_dash.dash[i];
2237 p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
2238 }
2239 if (p < c + BMAX) {
2240 *p++ = ';';
2241 }
2242 } else {
2243 p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:none;");
2244 }
2245 }
2247 /** \todo fixme: */
2248 if (style->stroke_dashoffset_set) {
2249 Inkscape::CSSOStringStream os;
2250 os << "stroke-dashoffset:" << style->stroke_dash.offset << ";";
2251 p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
2252 } else if (flags == SP_STYLE_FLAG_ALWAYS) {
2253 p += g_snprintf(p, c + BMAX - p, "stroke-dashoffset:0;");
2254 }
2256 p += sp_style_write_iscale24(p, c + BMAX - p, "stroke-opacity", &style->stroke_opacity, NULL, flags);
2258 p += sp_style_write_ienum(p, c + BMAX - p, "visibility", enum_visibility, &style->visibility, NULL, flags);
2259 p += sp_style_write_ienum(p, c + BMAX - p, "display", enum_display, &style->display, NULL, flags);
2260 p += sp_style_write_ienum(p, c + BMAX - p, "overflow", enum_overflow, &style->overflow, NULL, flags);
2262 /* filter: */
2263 p += sp_style_write_ifilter(p, c + BMAX - p, "filter", &style->filter, NULL, flags);
2265 p += sp_style_write_ienum(p, c + BMAX - p, "enable-background", enum_enable_background, &style->enable_background, NULL, flags);
2267 /* fixme: */
2268 p += sp_text_style_write(p, c + BMAX - p, style->text, flags);
2270 /* Get rid of trailing `;'. */
2271 if (p != c) {
2272 --p;
2273 if (*p == ';') {
2274 *p = '\0';
2275 }
2276 }
2278 return g_strdup(c);
2279 }
2282 #define STYLE_BUF_MAX
2285 /**
2286 * Dumps style to CSS string, see sp_style_write_string()
2287 *
2288 * \pre from != NULL.
2289 * \pre to != NULL.
2290 * \post ret != NULL.
2291 */
2292 gchar *
2293 sp_style_write_difference(SPStyle const *const from, SPStyle const *const to)
2294 {
2295 g_return_val_if_fail(from != NULL, NULL);
2296 g_return_val_if_fail(to != NULL, NULL);
2298 gchar c[BMAX], *p = c;
2299 *p = '\0';
2301 p += sp_style_write_ifontsize(p, c + BMAX - p, "font-size", &from->font_size, &to->font_size, SP_STYLE_FLAG_IFDIFF);
2302 p += sp_style_write_ienum(p, c + BMAX - p, "font-style", enum_font_style, &from->font_style, &to->font_style, SP_STYLE_FLAG_IFDIFF);
2303 p += sp_style_write_ienum(p, c + BMAX - p, "font-variant", enum_font_variant, &from->font_variant, &to->font_variant, SP_STYLE_FLAG_IFDIFF);
2304 p += sp_style_write_ienum(p, c + BMAX - p, "font-weight", enum_font_weight, &from->font_weight, &to->font_weight, SP_STYLE_FLAG_IFDIFF);
2305 p += sp_style_write_ienum(p, c + BMAX - p, "font-stretch", enum_font_stretch, &from->font_stretch, &to->font_stretch, SP_STYLE_FLAG_IFDIFF);
2307 /* Text */
2308 p += sp_style_write_ilength(p, c + BMAX - p, "text-indent", &from->text_indent, &to->text_indent, SP_STYLE_FLAG_IFDIFF);
2309 p += sp_style_write_ienum(p, c + BMAX - p, "text-align", enum_text_align, &from->text_align, &to->text_align, SP_STYLE_FLAG_IFDIFF);
2310 p += sp_style_write_itextdecoration(p, c + BMAX - p, "text-decoration", &from->text_decoration, &to->text_decoration, SP_STYLE_FLAG_IFDIFF);
2311 p += sp_style_write_ilengthornormal(p, c + BMAX - p, "line-height", &from->line_height, &to->line_height, SP_STYLE_FLAG_IFDIFF);
2312 p += sp_style_write_ilengthornormal(p, c + BMAX - p, "letter-spacing", &from->letter_spacing, &to->letter_spacing, SP_STYLE_FLAG_IFDIFF);
2313 p += sp_style_write_ilengthornormal(p, c + BMAX - p, "word-spacing", &from->word_spacing, &to->word_spacing, SP_STYLE_FLAG_IFDIFF);
2314 p += sp_style_write_ienum(p, c + BMAX - p, "text-transform", enum_text_transform, &from->text_transform, &to->text_transform, SP_STYLE_FLAG_IFDIFF);
2315 p += sp_style_write_ienum(p, c + BMAX - p, "direction", enum_direction, &from->direction, &to->direction, SP_STYLE_FLAG_IFDIFF);
2316 p += sp_style_write_ienum(p, c + BMAX - p, "block-progression", enum_block_progression, &from->block_progression, &to->block_progression, SP_STYLE_FLAG_IFDIFF);
2317 p += sp_style_write_ienum(p, c + BMAX - p, "writing-mode", enum_writing_mode, &from->writing_mode, &to->writing_mode, SP_STYLE_FLAG_IFDIFF);
2319 p += sp_style_write_ienum(p, c + BMAX - p, "text-anchor", enum_text_anchor, &from->text_anchor, &to->text_anchor, SP_STYLE_FLAG_IFDIFF);
2321 /// \todo fixme: Per type methods need default flag too
2322 if (from->opacity.set && from->opacity.value != SP_SCALE24_MAX) {
2323 p += sp_style_write_iscale24(p, c + BMAX - p, "opacity", &from->opacity, &to->opacity, SP_STYLE_FLAG_IFSET);
2324 }
2325 p += sp_style_write_ipaint(p, c + BMAX - p, "color", &from->color, &to->color, SP_STYLE_FLAG_IFSET);
2326 p += sp_style_write_ipaint(p, c + BMAX - p, "fill", &from->fill, &to->fill, SP_STYLE_FLAG_IFDIFF);
2327 p += sp_style_write_iscale24(p, c + BMAX - p, "fill-opacity", &from->fill_opacity, &to->fill_opacity, SP_STYLE_FLAG_IFDIFF);
2328 p += sp_style_write_ienum(p, c + BMAX - p, "fill-rule", enum_fill_rule, &from->fill_rule, &to->fill_rule, SP_STYLE_FLAG_IFDIFF);
2329 p += sp_style_write_ipaint(p, c + BMAX - p, "stroke", &from->stroke, &to->stroke, SP_STYLE_FLAG_IFDIFF);
2330 p += sp_style_write_ilength(p, c + BMAX - p, "stroke-width", &from->stroke_width, &to->stroke_width, SP_STYLE_FLAG_IFDIFF);
2331 p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linecap", enum_stroke_linecap,
2332 &from->stroke_linecap, &to->stroke_linecap, SP_STYLE_FLAG_IFDIFF);
2333 p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linejoin", enum_stroke_linejoin,
2334 &from->stroke_linejoin, &to->stroke_linejoin, SP_STYLE_FLAG_IFDIFF);
2335 p += sp_style_write_ifloat(p, c + BMAX - p, "stroke-miterlimit",
2336 &from->stroke_miterlimit, &to->stroke_miterlimit, SP_STYLE_FLAG_IFDIFF);
2337 /** \todo fixme: */
2338 if (from->stroke_dasharray_set) {
2339 if (from->stroke_dasharray_inherit) {
2340 p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:inherit;");
2341 } else if (from->stroke_dash.n_dash && from->stroke_dash.dash) {
2342 p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:");
2343 for (gint i = 0; i < from->stroke_dash.n_dash; i++) {
2344 Inkscape::CSSOStringStream os;
2345 if (i) {
2346 os << ", ";
2347 }
2348 os << from->stroke_dash.dash[i];
2349 p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
2350 }
2351 p += g_snprintf(p, c + BMAX - p, ";");
2352 }
2353 }
2354 /* fixme: */
2355 if (from->stroke_dashoffset_set) {
2356 Inkscape::CSSOStringStream os;
2357 os << "stroke-dashoffset:" << from->stroke_dash.offset << ";";
2358 p += g_strlcpy(p, os.str().c_str(), c + BMAX - p);
2359 }
2360 p += sp_style_write_iscale24(p, c + BMAX - p, "stroke-opacity", &from->stroke_opacity, &to->stroke_opacity, SP_STYLE_FLAG_IFDIFF);
2362 /* markers */
2363 if (from->marker[SP_MARKER_LOC].value != NULL) {
2364 p += g_snprintf(p, c + BMAX - p, "marker:%s;", from->marker[SP_MARKER_LOC].value);
2365 }
2366 if (from->marker[SP_MARKER_LOC_START].value != NULL) {
2367 p += g_snprintf(p, c + BMAX - p, "marker-start:%s;", from->marker[SP_MARKER_LOC_START].value);
2368 }
2369 if (from->marker[SP_MARKER_LOC_MID].value != NULL) {
2370 p += g_snprintf(p, c + BMAX - p, "marker-mid:%s;", from->marker[SP_MARKER_LOC_MID].value);
2371 }
2372 if (from->marker[SP_MARKER_LOC_END].value != NULL) {
2373 p += g_snprintf(p, c + BMAX - p, "marker-end:%s;", from->marker[SP_MARKER_LOC_END].value);
2374 }
2376 p += sp_style_write_ienum(p, c + BMAX - p, "visibility", enum_visibility, &from->visibility, &to->visibility, SP_STYLE_FLAG_IFSET);
2377 p += sp_style_write_ienum(p, c + BMAX - p, "display", enum_display, &from->display, &to->display, SP_STYLE_FLAG_IFSET);
2378 p += sp_style_write_ienum(p, c + BMAX - p, "overflow", enum_overflow, &from->overflow, &to->overflow, SP_STYLE_FLAG_IFSET);
2380 /* filter: */
2381 p += sp_style_write_ifilter(p, c + BMAX - p, "filter", &from->filter, &to->filter, SP_STYLE_FLAG_IFDIFF);
2383 p += sp_style_write_ienum(p, c + BMAX - p, "enable-background", enum_enable_background, &from->enable_background, &to->enable_background, SP_STYLE_FLAG_IFSET);
2385 p += sp_text_style_write(p, c + BMAX - p, from->text, SP_STYLE_FLAG_IFDIFF);
2387 /** \todo
2388 * The reason we use IFSET rather than IFDIFF is the belief that the IFDIFF
2389 * flag is mainly only for attributes that don't handle explicit unset well.
2390 * We may need to revisit the behaviour of this routine.
2391 */
2393 /* Get rid of trailing `;'. */
2394 if (p != c) {
2395 --p;
2396 if (*p == ';') {
2397 *p = '\0';
2398 }
2399 }
2401 return g_strdup(c);
2402 }
2406 /**
2407 * Reset all style properties.
2408 */
2409 static void
2410 sp_style_clear(SPStyle *style)
2411 {
2412 g_return_if_fail(style != NULL);
2414 style->fill.clear();
2415 style->stroke.clear();
2416 sp_style_filter_clear(style);
2418 if (style->fill.value.href)
2419 delete style->fill.value.href;
2420 if (style->stroke.value.href)
2421 delete style->stroke.value.href;
2422 if (style->filter.href)
2423 delete style->filter.href;
2425 if (style->stroke_dash.dash) {
2426 g_free(style->stroke_dash.dash);
2427 }
2429 /** \todo fixme: Do that text manipulation via parents */
2430 SPObject *object = style->object;
2431 SPDocument *document = style->document;
2432 gint const refcount = style->refcount;
2433 SPTextStyle *text = style->text;
2434 unsigned const text_private = style->text_private;
2436 memset(style, 0, sizeof(SPStyle));
2438 style->refcount = refcount;
2439 style->object = object;
2440 style->document = document;
2442 if (document) {
2443 style->filter.href = new SPFilterReference(document);
2444 style->filter.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_filter_ref_changed), style));
2446 style->fill.value.href = new SPPaintServerReference(document);
2447 style->fill.value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_fill_paint_server_ref_changed), style));
2449 style->stroke.value.href = new SPPaintServerReference(document);
2450 style->stroke.value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_stroke_paint_server_ref_changed), style));
2451 }
2453 style->text = text;
2454 style->text_private = text_private;
2456 /* fixme: */
2457 style->text->font.set = FALSE;
2458 style->text->font_family.set = FALSE;
2460 style->font_size.set = FALSE;
2461 style->font_size.type = SP_FONT_SIZE_LITERAL;
2462 style->font_size.value = SP_CSS_FONT_SIZE_MEDIUM;
2463 style->font_size.computed = 12.0;
2464 style->font_style.set = FALSE;
2465 style->font_style.value = style->font_style.computed = SP_CSS_FONT_STYLE_NORMAL;
2466 style->font_variant.set = FALSE;
2467 style->font_variant.value = style->font_variant.computed = SP_CSS_FONT_VARIANT_NORMAL;
2468 style->font_weight.set = FALSE;
2469 style->font_weight.value = SP_CSS_FONT_WEIGHT_NORMAL;
2470 style->font_weight.computed = SP_CSS_FONT_WEIGHT_400;
2471 style->font_stretch.set = FALSE;
2472 style->font_stretch.value = style->font_stretch.computed = SP_CSS_FONT_STRETCH_NORMAL;
2474 /* text */
2475 style->text_indent.set = FALSE;
2476 style->text_indent.unit = SP_CSS_UNIT_NONE;
2477 style->text_indent.computed = 0.0;
2479 style->text_align.set = FALSE;
2480 style->text_align.value = style->text_align.computed = SP_CSS_TEXT_ALIGN_START;
2482 style->text_decoration.set = FALSE;
2483 style->text_decoration.underline = FALSE;
2484 style->text_decoration.overline = FALSE;
2485 style->text_decoration.line_through = FALSE;
2486 style->text_decoration.blink = FALSE;
2488 style->line_height.set = FALSE;
2489 style->line_height.unit = SP_CSS_UNIT_PERCENT;
2490 style->line_height.normal = TRUE;
2491 style->line_height.value = style->line_height.computed = 1.0;
2493 style->letter_spacing.set = FALSE;
2494 style->letter_spacing.unit = SP_CSS_UNIT_NONE;
2495 style->letter_spacing.normal = TRUE;
2496 style->letter_spacing.value = style->letter_spacing.computed = 0.0;
2498 style->word_spacing.set = FALSE;
2499 style->word_spacing.unit = SP_CSS_UNIT_NONE;
2500 style->word_spacing.normal = TRUE;
2501 style->word_spacing.value = style->word_spacing.computed = 0.0;
2503 style->text_transform.set = FALSE;
2504 style->text_transform.value = style->text_transform.computed = SP_CSS_TEXT_TRANSFORM_NONE;
2506 style->direction.set = FALSE;
2507 style->direction.value = style->direction.computed = SP_CSS_DIRECTION_LTR;
2509 style->block_progression.set = FALSE;
2510 style->block_progression.value = style->block_progression.computed = SP_CSS_BLOCK_PROGRESSION_TB;
2512 style->writing_mode.set = FALSE;
2513 style->writing_mode.value = style->writing_mode.computed = SP_CSS_WRITING_MODE_LR_TB;
2516 style->text_anchor.set = FALSE;
2517 style->text_anchor.value = style->text_anchor.computed = SP_CSS_TEXT_ANCHOR_START;
2520 style->opacity.value = SP_SCALE24_MAX;
2521 style->visibility.set = FALSE;
2522 style->visibility.value = style->visibility.computed = SP_CSS_VISIBILITY_VISIBLE;
2523 style->display.set = FALSE;
2524 style->display.value = style->display.computed = SP_CSS_DISPLAY_INLINE;
2525 style->overflow.set = FALSE;
2526 style->overflow.value = style->overflow.computed = SP_CSS_OVERFLOW_VISIBLE;
2528 style->color.clear();
2529 style->color.setColor(0.0, 0.0, 0.0);
2531 style->fill.clear();
2532 style->fill.setColor(0.0, 0.0, 0.0);
2533 style->fill_opacity.value = SP_SCALE24_MAX;
2534 style->fill_rule.value = style->fill_rule.computed = SP_WIND_RULE_NONZERO;
2536 style->stroke.clear();
2537 style->stroke_opacity.value = SP_SCALE24_MAX;
2539 style->stroke_width.set = FALSE;
2540 style->stroke_width.unit = SP_CSS_UNIT_NONE;
2541 style->stroke_width.computed = 1.0;
2543 style->stroke_linecap.set = FALSE;
2544 style->stroke_linecap.value = style->stroke_linecap.computed = SP_STROKE_LINECAP_BUTT;
2545 style->stroke_linejoin.set = FALSE;
2546 style->stroke_linejoin.value = style->stroke_linejoin.computed = SP_STROKE_LINEJOIN_MITER;
2548 style->stroke_miterlimit.set = FALSE;
2549 style->stroke_miterlimit.value = 4.0;
2551 style->stroke_dash.n_dash = 0;
2552 style->stroke_dash.dash = NULL;
2553 style->stroke_dash.offset = 0.0;
2555 for (unsigned i = SP_MARKER_LOC; i < SP_MARKER_LOC_QTY; i++) {
2556 g_free(style->marker[i].value);
2557 style->marker[i].set = FALSE;
2558 }
2560 style->enable_background.value = SP_CSS_BACKGROUND_ACCUMULATE;
2561 style->enable_background.set = false;
2562 style->enable_background.inherit = false;
2563 }
2567 /**
2568 *
2569 */
2570 static void
2571 sp_style_read_dash(SPStyle *style, gchar const *str)
2572 {
2573 /* Ref: http://www.w3.org/TR/SVG11/painting.html#StrokeDasharrayProperty */
2574 style->stroke_dasharray_set = TRUE;
2576 if (strcmp(str, "inherit") == 0) {
2577 style->stroke_dasharray_inherit = true;
2578 return;
2579 }
2580 style->stroke_dasharray_inherit = false;
2582 NRVpathDash &dash = style->stroke_dash;
2583 g_free(dash.dash);
2584 dash.dash = NULL;
2586 if (strcmp(str, "none") == 0) {
2587 dash.n_dash = 0;
2588 return;
2589 }
2591 gint n_dash = 0;
2592 gdouble d[64];
2593 gchar *e = NULL;
2595 bool LineSolid=true;
2596 while (e != str && n_dash < 64) {
2597 /* TODO: Should allow <length> rather than just a unitless (px) number. */
2598 d[n_dash] = g_ascii_strtod(str, (char **) &e);
2599 if (d[n_dash] > 0.00000001)
2600 LineSolid = false;
2601 if (e != str) {
2602 n_dash += 1;
2603 str = e;
2604 }
2605 while (str && *str && !isalnum(*str)) str += 1;
2606 }
2608 if (LineSolid) {
2609 dash.n_dash = 0;
2610 return;
2611 }
2613 if (n_dash > 0) {
2614 dash.dash = g_new(gdouble, n_dash);
2615 memcpy(dash.dash, d, sizeof(gdouble) * n_dash);
2616 dash.n_dash = n_dash;
2617 }
2618 }
2621 /*#########################
2622 ## SPTextStyle operations
2623 #########################*/
2626 /**
2627 * Return new SPTextStyle object with default settings.
2628 */
2629 static SPTextStyle *
2630 sp_text_style_new()
2631 {
2632 SPTextStyle *ts = g_new0(SPTextStyle, 1);
2633 ts->refcount = 1;
2634 sp_text_style_clear(ts);
2636 ts->font.value = g_strdup("Bitstream Vera Sans");
2637 ts->font_family.value = g_strdup("Bitstream Vera Sans");
2639 return ts;
2640 }
2643 /**
2644 * Clear text style settings.
2645 */
2646 static void
2647 sp_text_style_clear(SPTextStyle *ts)
2648 {
2649 ts->font.set = FALSE;
2650 ts->font_family.set = FALSE;
2651 }
2655 /**
2656 * Reduce refcount of text style and possibly free it.
2657 */
2658 static SPTextStyle *
2659 sp_text_style_unref(SPTextStyle *st)
2660 {
2661 st->refcount -= 1;
2663 if (st->refcount < 1) {
2664 g_free(st->font.value);
2665 g_free(st->font_family.value);
2666 g_free(st);
2667 }
2669 return NULL;
2670 }
2674 /**
2675 * Return duplicate of text style.
2676 */
2677 static SPTextStyle *
2678 sp_text_style_duplicate_unset(SPTextStyle *st)
2679 {
2680 SPTextStyle *nt = g_new0(SPTextStyle, 1);
2681 nt->refcount = 1;
2683 nt->font.value = g_strdup(st->font.value);
2684 nt->font_family.value = g_strdup(st->font_family.value);
2686 return nt;
2687 }
2691 /**
2692 * Write SPTextStyle object into string.
2693 */
2694 static guint
2695 sp_text_style_write(gchar *p, guint const len, SPTextStyle const *const st, guint flags)
2696 {
2697 gint d = 0;
2699 // We do not do diffing for text style
2700 if (flags == SP_STYLE_FLAG_IFDIFF)
2701 flags = SP_STYLE_FLAG_IFSET;
2703 d += sp_style_write_istring(p + d, len - d, "font-family", &st->font_family, NULL, flags);
2704 return d;
2705 }
2709 /* The following sp_tyle_read_* functions ignore invalid values, as per
2710 * http://www.w3.org/TR/REC-CSS2/syndata.html#parsing-errors.
2711 *
2712 * [However, the SVG spec is somewhat unclear as to whether the style attribute should
2713 * be handled as per CSS2 rules or whether it must simply be a set of PROPERTY:VALUE
2714 * pairs, in which case SVG's error-handling rules
2715 * http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing should instead be applied.]
2716 */
2719 /**
2720 * Set SPIFloat object from string.
2721 */
2722 static void
2723 sp_style_read_ifloat(SPIFloat *val, gchar const *str)
2724 {
2725 if (!strcmp(str, "inherit")) {
2726 val->set = TRUE;
2727 val->inherit = TRUE;
2728 } else {
2729 gfloat value;
2730 if (sp_svg_number_read_f(str, &value)) {
2731 val->set = TRUE;
2732 val->inherit = FALSE;
2733 val->value = value;
2734 }
2735 }
2736 }
2740 /**
2741 * Set SPIScale24 object from string.
2742 */
2743 static void
2744 sp_style_read_iscale24(SPIScale24 *val, gchar const *str)
2745 {
2746 if (!strcmp(str, "inherit")) {
2747 val->set = TRUE;
2748 val->inherit = TRUE;
2749 } else {
2750 gfloat value;
2751 if (sp_svg_number_read_f(str, &value)) {
2752 val->set = TRUE;
2753 val->inherit = FALSE;
2754 value = CLAMP(value, 0.0, 1.0);
2755 val->value = SP_SCALE24_FROM_FLOAT(value);
2756 }
2757 }
2758 }
2760 /**
2761 * Reads a style value and performs lookup based on the given style value enumerations.
2762 */
2763 static void
2764 sp_style_read_ienum(SPIEnum *val, gchar const *str, SPStyleEnum const *dict,
2765 bool const can_explicitly_inherit)
2766 {
2767 if ( can_explicitly_inherit && !strcmp(str, "inherit") ) {
2768 val->set = TRUE;
2769 val->inherit = TRUE;
2770 } else {
2771 for (unsigned i = 0; dict[i].key; i++) {
2772 if (!strcmp(str, dict[i].key)) {
2773 val->set = TRUE;
2774 val->inherit = FALSE;
2775 val->value = dict[i].value;
2776 /* Save copying for values not needing it */
2777 val->computed = val->value;
2778 break;
2779 }
2780 }
2781 }
2782 }
2786 /**
2787 * Set SPIString object from string.
2788 */
2789 static void
2790 sp_style_read_istring(SPIString *val, gchar const *str)
2791 {
2792 g_free(val->value);
2794 if (!strcmp(str, "inherit")) {
2795 val->set = TRUE;
2796 val->inherit = TRUE;
2797 val->value = NULL;
2798 } else {
2799 val->set = TRUE;
2800 val->inherit = FALSE;
2801 val->value = g_strdup(str);
2802 }
2803 }
2807 /**
2808 * Set SPILength object from string.
2809 */
2810 static void
2811 sp_style_read_ilength(SPILength *val, gchar const *str)
2812 {
2813 if (!strcmp(str, "inherit")) {
2814 val->set = TRUE;
2815 val->inherit = TRUE;
2816 } else {
2817 gdouble value;
2818 gchar *e;
2819 /** \todo fixme: Move this to standard place (Lauris) */
2820 value = g_ascii_strtod(str, &e);
2821 if ((gchar const *) e != str) {
2822 /** \todo
2823 * Allow the number of px per inch to vary (document preferences,
2824 * X server or whatever). E.g. don't fill in computed here, do
2825 * it at the same time as percentage units are done.
2826 */
2827 if (!*e) {
2828 /* Userspace */
2829 val->unit = SP_CSS_UNIT_NONE;
2830 val->computed = value;
2831 } else if (!strcmp(e, "px")) {
2832 /* Userspace */
2833 val->unit = SP_CSS_UNIT_PX;
2834 val->computed = value;
2835 } else if (!strcmp(e, "pt")) {
2836 /* Userspace / DEVICESCALE */
2837 val->unit = SP_CSS_UNIT_PT;
2838 val->computed = value * PX_PER_PT;
2839 } else if (!strcmp(e, "pc")) {
2840 /* 1 pica = 12pt; FIXME: add it to SPUnit */
2841 val->unit = SP_CSS_UNIT_PC;
2842 val->computed = value * PX_PER_PT * 12;
2843 } else if (!strcmp(e, "mm")) {
2844 val->unit = SP_CSS_UNIT_MM;
2845 val->computed = value * PX_PER_MM;
2846 } else if (!strcmp(e, "cm")) {
2847 val->unit = SP_CSS_UNIT_CM;
2848 val->computed = value * PX_PER_CM;
2849 } else if (!strcmp(e, "in")) {
2850 val->unit = SP_CSS_UNIT_IN;
2851 val->computed = value * PX_PER_IN;
2852 } else if (!strcmp(e, "em")) {
2853 /* EM square */
2854 val->unit = SP_CSS_UNIT_EM;
2855 val->value = value;
2856 } else if (!strcmp(e, "ex")) {
2857 /* ex square */
2858 val->unit = SP_CSS_UNIT_EX;
2859 val->value = value;
2860 } else if (!strcmp(e, "%")) {
2861 /* Percentage */
2862 val->unit = SP_CSS_UNIT_PERCENT;
2863 val->value = value * 0.01;
2864 } else {
2865 /* Invalid */
2866 return;
2867 }
2868 val->set = TRUE;
2869 val->inherit = FALSE;
2870 }
2871 }
2872 }
2874 /**
2875 * Set SPILengthOrNormal object from string.
2876 */
2877 static void
2878 sp_style_read_ilengthornormal(SPILengthOrNormal *val, gchar const *str)
2879 {
2880 if (!strcmp(str, "normal")) {
2881 val->set = TRUE;
2882 val->inherit = FALSE;
2883 val->normal = TRUE;
2884 val->unit = SP_CSS_UNIT_NONE;
2885 val->value = val->computed = 0.0;
2886 } else {
2887 SPILength length;
2888 sp_style_read_ilength(&length, str);
2889 val->set = length.set;
2890 val->inherit = length.inherit;
2891 val->normal = FALSE;
2892 val->unit = length.unit;
2893 val->value = length.value;
2894 val->computed = length.computed;
2895 }
2896 }
2898 /**
2899 * Set SPITextDecoration object from string.
2900 */
2901 static void
2902 sp_style_read_itextdecoration(SPITextDecoration *val, gchar const *str)
2903 {
2904 if (!strcmp(str, "inherit")) {
2905 val->set = TRUE;
2906 val->inherit = TRUE;
2907 } else if (!strcmp(str, "none")) {
2908 val->set = TRUE;
2909 val->inherit = FALSE;
2910 val->underline = FALSE;
2911 val->overline = FALSE;
2912 val->line_through = FALSE;
2913 val->blink = FALSE;
2914 } else {
2915 bool found_underline = false;
2916 bool found_overline = false;
2917 bool found_line_through = false;
2918 bool found_blink = false;
2919 for ( ; *str ; str++ ) {
2920 if (*str == ' ') continue;
2921 if (strneq(str, "underline", 9) && (str[9] == ' ' || str[9] == '\0')) {
2922 found_underline = true;
2923 str += 9;
2924 } else if (strneq(str, "overline", 8) && (str[8] == ' ' || str[8] == '\0')) {
2925 found_overline = true;
2926 str += 8;
2927 } else if (strneq(str, "line-through", 12) && (str[12] == ' ' || str[12] == '\0')) {
2928 found_line_through = true;
2929 str += 12;
2930 } else if (strneq(str, "blink", 5) && (str[5] == ' ' || str[5] == '\0')) {
2931 found_blink = true;
2932 str += 5;
2933 } else {
2934 return; // invalid value
2935 }
2936 }
2937 if (!(found_underline || found_overline || found_line_through || found_blink)) {
2938 return; // invalid value: empty
2939 }
2940 val->set = TRUE;
2941 val->inherit = FALSE;
2942 val->underline = found_underline;
2943 val->overline = found_overline;
2944 val->line_through = found_line_through;
2945 val->blink = found_blink;
2946 }
2947 }
2949 /**
2950 * Set SPIPaint object from string containing an integer value.
2951 * \param document Ignored
2952 */
2953 static void
2954 sp_style_read_icolor(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocument *document)
2955 {
2956 (void)style; // TODO
2957 (void)document; // TODO
2958 paint->currentcolor = FALSE; /* currentColor not a valid <color>. */
2959 if (!strcmp(str, "inherit")) {
2960 paint->set = TRUE;
2961 paint->inherit = TRUE;
2962 } else {
2963 guint32 const rgb0 = sp_svg_read_color(str, 0xff);
2964 if (rgb0 != 0xff) {
2965 paint->setColor(rgb0);
2966 paint->inherit = FALSE;
2967 }
2968 }
2969 }
2972 /**
2973 * Set SPIPaint object from string.
2974 *
2975 * \pre paint == \&style.fill || paint == \&style.stroke.
2976 */
2977 static void
2978 sp_style_read_ipaint(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocument *document)
2979 {
2980 while (g_ascii_isspace(*str)) {
2981 ++str;
2982 }
2984 paint->clear();
2986 if (streq(str, "inherit")) {
2987 paint->set = TRUE;
2988 paint->inherit = TRUE;
2989 } else {
2990 if ( strneq(str, "url", 3) ) {
2991 gchar *uri = extract_uri( str, &str );
2992 while ( g_ascii_isspace(*str) ) {
2993 ++str;
2994 }
2995 // TODO check on and comment the comparrison "paint != &style->color".
2996 if ( uri && *uri && (paint != &style->color) ) {
2997 paint->set = TRUE;
2999 // it may be that this style's SPIPaint has not yet created its URIReference;
3000 // now that we have a document, we can create it here
3001 if (!paint->value.href && document) {
3002 paint->value.href = new SPPaintServerReference(document);
3003 paint->value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun((paint == &style->fill)? sp_style_fill_paint_server_ref_changed : sp_style_stroke_paint_server_ref_changed), style));
3004 }
3006 // TODO check what this does in light of move away from union
3007 sp_style_set_ipaint_to_uri_string (style, paint, uri);
3008 }
3009 g_free( uri );
3010 }
3012 if (streq(str, "currentColor") && paint != &style->color) {
3013 paint->set = TRUE;
3014 paint->currentcolor = TRUE;
3015 } else if (streq(str, "none") && paint != &style->color) {
3016 paint->set = TRUE;
3017 paint->noneSet = TRUE;
3018 } else {
3019 guint32 const rgb0 = sp_svg_read_color(str, &str, 0xff);
3020 if (rgb0 != 0xff) {
3021 paint->setColor( rgb0 );
3022 paint->set = TRUE;
3024 while (g_ascii_isspace(*str)) {
3025 ++str;
3026 }
3027 if (strneq(str, "icc-color(", 10)) {
3028 SVGICCColor* tmp = new SVGICCColor();
3029 if ( ! sp_svg_read_icc_color( str, &str, tmp ) ) {
3030 delete tmp;
3031 tmp = 0;
3032 }
3033 paint->value.color.icc = tmp;
3034 }
3035 }
3036 }
3037 }
3038 }
3042 /**
3043 * Set SPIFontSize object from string.
3044 */
3045 static void
3046 sp_style_read_ifontsize(SPIFontSize *val, gchar const *str)
3047 {
3048 if (!strcmp(str, "inherit")) {
3049 val->set = TRUE;
3050 val->inherit = TRUE;
3051 } else if ((*str == 'x') || (*str == 's') || (*str == 'm') || (*str == 'l')) {
3052 for (unsigned i = 0; enum_font_size[i].key; i++) {
3053 if (!strcmp(str, enum_font_size[i].key)) {
3054 val->set = TRUE;
3055 val->inherit = FALSE;
3056 val->type = SP_FONT_SIZE_LITERAL;
3057 val->value = enum_font_size[i].value;
3058 return;
3059 }
3060 }
3061 /* Invalid */
3062 return;
3063 } else {
3064 gdouble value;
3065 gchar *e;
3066 /* fixme: Move this to standard place (Lauris) */
3067 value = g_ascii_strtod(str, &e);
3068 if ((gchar const *) e != str) {
3069 if (!*e) {
3070 /* Userspace */
3071 } else if (!strcmp(e, "px")) {
3072 /* Userspace */
3073 } else if (!strcmp(e, "pt")) {
3074 /* Userspace * DEVICESCALE */
3075 value *= PX_PER_PT;
3076 } else if (!strcmp(e, "pc")) {
3077 /* 12pt */
3078 value *= PX_PER_PT * 12.0;
3079 } else if (!strcmp(e, "mm")) {
3080 value *= PX_PER_MM;
3081 } else if (!strcmp(e, "cm")) {
3082 value *= PX_PER_CM;
3083 } else if (!strcmp(e, "in")) {
3084 value *= PX_PER_IN;
3085 } else if (!strcmp(e, "%")) {
3086 /* Percentage */
3087 val->set = TRUE;
3088 val->inherit = FALSE;
3089 val->type = SP_FONT_SIZE_PERCENTAGE;
3090 val->value = SP_F8_16_FROM_FLOAT(value / 100.0);
3091 return;
3092 } else {
3093 /* Invalid */
3094 return;
3095 }
3096 /* Length */
3097 val->set = TRUE;
3098 val->inherit = FALSE;
3099 val->type = SP_FONT_SIZE_LENGTH;
3100 val->computed = value;
3101 return;
3102 }
3103 }
3104 }
3108 /**
3109 * Set SPIFilter object from string.
3110 */
3111 static void
3112 sp_style_read_ifilter(gchar const *str, SPStyle * style, SPDocument *document)
3113 {
3114 SPIFilter *f = &(style->filter);
3115 /* Try all possible values: inherit, none, uri */
3116 if (streq(str, "inherit")) {
3117 f->set = TRUE;
3118 f->inherit = TRUE;
3119 if (f->href && f->href->getObject())
3120 f->href->detach();
3121 } else if(streq(str, "none")) {
3122 f->set = TRUE;
3123 f->inherit = FALSE;
3124 if (f->href && f->href->getObject())
3125 f->href->detach();
3126 } else if (strneq(str, "url", 3)) {
3127 char *uri = extract_uri(str);
3128 if(uri == NULL || uri[0] == '\0') {
3129 g_warning("Specified filter url is empty");
3130 f->set = TRUE;
3131 f->inherit = FALSE;
3132 return;
3133 }
3134 f->set = TRUE;
3135 f->inherit = FALSE;
3136 if (f->href && f->href->getObject())
3137 f->href->detach();
3139 // it may be that this style has not yet created its SPFilterReference;
3140 // now that we have a document, we can create it here
3141 if (!f->href && document) {
3142 f->href = new SPFilterReference(document);
3143 f->href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_filter_ref_changed), style));
3144 }
3146 try {
3147 f->href->attach(Inkscape::URI(uri));
3148 } catch (Inkscape::BadURIException &e) {
3149 g_warning("%s", e.what());
3150 f->href->detach();
3151 }
3152 g_free (uri);
3154 } else {
3155 /* We shouldn't reach this if SVG input is well-formed */
3156 f->set = FALSE;
3157 f->inherit = FALSE;
3158 if (f->href && f->href->getObject())
3159 f->href->detach();
3160 }
3161 }
3163 /**
3164 * Set SPIEnum object from repr attribute.
3165 */
3166 static void
3167 sp_style_read_penum(SPIEnum *val, Inkscape::XML::Node *repr,
3168 gchar const *key, SPStyleEnum const *dict,
3169 bool const can_explicitly_inherit)
3170 {
3171 gchar const *str = repr->attribute(key);
3172 if (str) {
3173 sp_style_read_ienum(val, str, dict, can_explicitly_inherit);
3174 }
3175 }
3179 /**
3180 * Set SPILength object from repr attribute.
3181 */
3182 static void
3183 sp_style_read_plength(SPILength *val, Inkscape::XML::Node *repr, gchar const *key)
3184 {
3185 gchar const *str = repr->attribute(key);
3186 if (str) {
3187 sp_style_read_ilength(val, str);
3188 }
3189 }
3191 /**
3192 * Set SPIFontSize object from repr attribute.
3193 */
3194 static void
3195 sp_style_read_pfontsize(SPIFontSize *val, Inkscape::XML::Node *repr, gchar const *key)
3196 {
3197 gchar const *str = repr->attribute(key);
3198 if (str) {
3199 sp_style_read_ifontsize(val, str);
3200 }
3201 }
3204 /**
3205 * Set SPIFloat object from repr attribute.
3206 */
3207 static void
3208 sp_style_read_pfloat(SPIFloat *val, Inkscape::XML::Node *repr, gchar const *key)
3209 {
3210 gchar const *str = repr->attribute(key);
3211 if (str) {
3212 sp_style_read_ifloat(val, str);
3213 }
3214 }
3217 /**
3218 * Write SPIFloat object into string.
3219 */
3220 static gint
3221 sp_style_write_ifloat(gchar *p, gint const len, gchar const *const key,
3222 SPIFloat const *const val, SPIFloat const *const base, guint const flags)
3223 {
3224 Inkscape::CSSOStringStream os;
3226 if ((flags & SP_STYLE_FLAG_ALWAYS)
3227 || ((flags & SP_STYLE_FLAG_IFSET) && val->set)
3228 || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set
3229 && (!base->set || (val->value != base->value))))
3230 {
3231 if (val->inherit) {
3232 return g_snprintf(p, len, "%s:inherit;", key);
3233 } else {
3234 os << key << ":" << val->value << ";";
3235 return g_strlcpy(p, os.str().c_str(), len);
3236 }
3237 }
3238 return 0;
3239 }
3242 /**
3243 * Write SPIScale24 object into string.
3244 */
3245 static gint
3246 sp_style_write_iscale24(gchar *p, gint const len, gchar const *const key,
3247 SPIScale24 const *const val, SPIScale24 const *const base,
3248 guint const flags)
3249 {
3250 Inkscape::CSSOStringStream os;
3252 if ((flags & SP_STYLE_FLAG_ALWAYS)
3253 || ((flags & SP_STYLE_FLAG_IFSET) && val->set)
3254 || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set
3255 && (!base->set || (val->value != base->value))))
3256 {
3257 if (val->inherit) {
3258 return g_snprintf(p, len, "%s:inherit;", key);
3259 } else {
3260 os << key << ":" << SP_SCALE24_TO_FLOAT(val->value) << ";";
3261 return g_strlcpy(p, os.str().c_str(), len);
3262 }
3263 }
3264 return 0;
3265 }
3268 /**
3269 * Write SPIEnum object into string.
3270 */
3271 static gint
3272 sp_style_write_ienum(gchar *p, gint const len, gchar const *const key,
3273 SPStyleEnum const *const dict,
3274 SPIEnum const *const val, SPIEnum const *const base, guint const flags)
3275 {
3276 if ((flags & SP_STYLE_FLAG_ALWAYS)
3277 || ((flags & SP_STYLE_FLAG_IFSET) && val->set)
3278 || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set
3279 && (!base->set || (val->computed != base->computed))))
3280 {
3281 if (val->inherit) {
3282 return g_snprintf(p, len, "%s:inherit;", key);
3283 }
3284 for (unsigned i = 0; dict[i].key; i++) {
3285 if (dict[i].value == static_cast< gint > (val->value) ) {
3286 return g_snprintf(p, len, "%s:%s;", key, dict[i].key);
3287 }
3288 }
3289 }
3290 return 0;
3291 }
3295 /**
3296 * Write SPIString object into string.
3297 */
3298 static gint
3299 sp_style_write_istring(gchar *p, gint const len, gchar const *const key,
3300 SPIString const *const val, SPIString const *const base, guint const flags)
3301 {
3302 if ((flags & SP_STYLE_FLAG_ALWAYS)
3303 || ((flags & SP_STYLE_FLAG_IFSET) && val->set)
3304 || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set
3305 && (!base->set || strcmp(val->value, base->value))))
3306 {
3307 if (val->inherit) {
3308 return g_snprintf(p, len, "%s:inherit;", key);
3309 } else {
3310 gchar *val_quoted = css2_escape_quote(val->value);
3311 return g_snprintf(p, len, "%s:%s;", key, val_quoted);
3312 g_free (val_quoted);
3313 }
3314 }
3315 return 0;
3316 }
3319 /**
3320 *
3321 */
3322 static bool
3323 sp_length_differ(SPILength const *const a, SPILength const *const b)
3324 {
3325 if (a->unit != b->unit) {
3326 if (a->unit == SP_CSS_UNIT_EM) return true;
3327 if (a->unit == SP_CSS_UNIT_EX) return true;
3328 if (a->unit == SP_CSS_UNIT_PERCENT) return true;
3329 if (b->unit == SP_CSS_UNIT_EM) return true;
3330 if (b->unit == SP_CSS_UNIT_EX) return true;
3331 if (b->unit == SP_CSS_UNIT_PERCENT) return true;
3332 }
3334 return (a->computed != b->computed);
3335 }
3339 /**
3340 * Write SPILength object into string.
3341 */
3342 static gint
3343 sp_style_write_ilength(gchar *p, gint const len, gchar const *const key,
3344 SPILength const *const val, SPILength const *const base, guint const flags)
3345 {
3346 Inkscape::CSSOStringStream os;
3348 if ((flags & SP_STYLE_FLAG_ALWAYS)
3349 || ((flags & SP_STYLE_FLAG_IFSET) && val->set)
3350 || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set
3351 && (!base->set || sp_length_differ(val, base))))
3352 {
3353 if (val->inherit) {
3354 return g_snprintf(p, len, "%s:inherit;", key);
3355 } else {
3356 switch (val->unit) {
3357 case SP_CSS_UNIT_NONE:
3358 os << key << ":" << val->computed << ";";
3359 return g_strlcpy(p, os.str().c_str(), len);
3360 break;
3361 case SP_CSS_UNIT_PX:
3362 os << key << ":" << val->computed << "px;";
3363 return g_strlcpy(p, os.str().c_str(), len);
3364 break;
3365 case SP_CSS_UNIT_PT:
3366 os << key << ":" << val->computed * PT_PER_PX << "pt;";
3367 return g_strlcpy(p, os.str().c_str(), len);
3368 break;
3369 case SP_CSS_UNIT_PC:
3370 os << key << ":" << val->computed * PT_PER_PX / 12.0 << "pc;";
3371 return g_strlcpy(p, os.str().c_str(), len);
3372 break;
3373 case SP_CSS_UNIT_MM:
3374 os << key << ":" << val->computed * MM_PER_PX << "mm;";
3375 return g_strlcpy(p, os.str().c_str(), len);
3376 break;
3377 case SP_CSS_UNIT_CM:
3378 os << key << ":" << val->computed * CM_PER_PX << "cm;";
3379 return g_strlcpy(p, os.str().c_str(), len);
3380 break;
3381 case SP_CSS_UNIT_IN:
3382 os << key << ":" << val->computed * IN_PER_PX << "in;";
3383 return g_strlcpy(p, os.str().c_str(), len);
3384 break;
3385 case SP_CSS_UNIT_EM:
3386 os << key << ":" << val->value << "em;";
3387 return g_strlcpy(p, os.str().c_str(), len);
3388 break;
3389 case SP_CSS_UNIT_EX:
3390 os << key << ":" << val->value << "ex;";
3391 return g_strlcpy(p, os.str().c_str(), len);
3392 break;
3393 case SP_CSS_UNIT_PERCENT:
3394 os << key << ":" << (val->value * 100.0) << "%;";
3395 return g_strlcpy(p, os.str().c_str(), len);
3396 break;
3397 default:
3398 /* Invalid */
3399 break;
3400 }
3401 }
3402 }
3403 return 0;
3404 }
3407 /**
3408 *
3409 */
3410 static bool
3411 sp_lengthornormal_differ(SPILengthOrNormal const *const a, SPILengthOrNormal const *const b)
3412 {
3413 if (a->normal != b->normal) return true;
3414 if (a->normal) return false;
3416 if (a->unit != b->unit) {
3417 if (a->unit == SP_CSS_UNIT_EM) return true;
3418 if (a->unit == SP_CSS_UNIT_EX) return true;
3419 if (a->unit == SP_CSS_UNIT_PERCENT) return true;
3420 if (b->unit == SP_CSS_UNIT_EM) return true;
3421 if (b->unit == SP_CSS_UNIT_EX) return true;
3422 if (b->unit == SP_CSS_UNIT_PERCENT) return true;
3423 }
3425 return (a->computed != b->computed);
3426 }
3428 /**
3429 * Write SPILengthOrNormal object into string.
3430 */
3431 static gint
3432 sp_style_write_ilengthornormal(gchar *p, gint const len, gchar const *const key,
3433 SPILengthOrNormal const *const val,
3434 SPILengthOrNormal const *const base,
3435 guint const flags)
3436 {
3437 if ((flags & SP_STYLE_FLAG_ALWAYS)
3438 || ((flags & SP_STYLE_FLAG_IFSET) && val->set)
3439 || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set
3440 && (!base->set || sp_lengthornormal_differ(val, base))))
3441 {
3442 if (val->normal) {
3443 return g_snprintf(p, len, "%s:normal;", key);
3444 } else {
3445 SPILength length;
3446 length.set = val->set;
3447 length.inherit = val->inherit;
3448 length.unit = val->unit;
3449 length.value = val->value;
3450 length.computed = val->computed;
3451 return sp_style_write_ilength(p, len, key, &length, NULL, SP_STYLE_FLAG_ALWAYS);
3452 }
3453 }
3454 return 0;
3455 }
3457 /**
3458 *
3459 */
3460 static bool
3461 sp_textdecoration_differ(SPITextDecoration const *const a, SPITextDecoration const *const b)
3462 {
3463 return a->underline != b->underline
3464 || a->overline != b->overline
3465 || a->line_through != b->line_through
3466 || a->blink != b->blink;
3467 }
3469 /**
3470 * Write SPITextDecoration object into string.
3471 */
3472 static gint
3473 sp_style_write_itextdecoration(gchar *p, gint const len, gchar const *const key,
3474 SPITextDecoration const *const val,
3475 SPITextDecoration const *const base,
3476 guint const flags)
3477 {
3478 Inkscape::CSSOStringStream os;
3480 if ((flags & SP_STYLE_FLAG_ALWAYS)
3481 || ((flags & SP_STYLE_FLAG_IFSET) && val->set)
3482 || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set
3483 && (!base->set || sp_textdecoration_differ(val, base))))
3484 {
3485 if (val->inherit) {
3486 return g_snprintf(p, len, "%s:inherit;", key);
3487 } else {
3488 os << key << ":";
3489 if (val->underline || val->overline || val->line_through || val->blink) {
3490 if (val->underline) os << " underline";
3491 if (val->overline) os << " overline";
3492 if (val->line_through) os << " line-through";
3493 if (val->blink) os << " blink";
3494 } else
3495 os << "none";
3496 os << ";";
3497 return g_strlcpy(p, os.str().c_str(), len);
3498 }
3499 }
3500 return 0;
3501 }
3503 /**
3504 *
3505 */
3506 static bool
3507 sp_paint_differ(SPIPaint const *const a, SPIPaint const *const b)
3508 {
3509 if ( (a->isColor() != b->isColor())
3510 || (a->isPaintserver() != b->isPaintserver())
3511 || (a->set != b->set)
3512 || (a->currentcolor != b->currentcolor)
3513 || (a->inherit!= b->inherit) ) {
3514 return true;
3515 }
3517 // TODO refactor to allow for mixed paints (rgb() *and* url(), etc)
3519 if ( a->isPaintserver() ) {
3520 return (a->value.href == NULL || b->value.href == NULL || a->value.href->getObject() != b->value.href->getObject());
3521 }
3523 if ( a->isColor() ) {
3524 return !( (a->value.color == b->value.color)
3525 && ((a->value.color.icc == b->value.color.icc)
3526 || (a->value.color.icc && b->value.color.icc
3527 && (a->value.color.icc->colorProfile == b->value.color.icc->colorProfile)
3528 && (a->value.color.icc->colors == b->value.color.icc->colors))));
3529 /* todo: Allow for epsilon differences in iccColor->colors, e.g. changes small enough not to show up
3530 * in the string representation. */
3531 }
3533 return false;
3534 }
3538 /**
3539 * Write SPIPaint object into string.
3540 */
3541 static gint
3542 sp_style_write_ipaint(gchar *b, gint const len, gchar const *const key,
3543 SPIPaint const *const paint, SPIPaint const *const base, guint const flags)
3544 {
3545 int retval = 0;
3547 if ((flags & SP_STYLE_FLAG_ALWAYS)
3548 || ((flags & SP_STYLE_FLAG_IFSET) && paint->set)
3549 || ((flags & SP_STYLE_FLAG_IFDIFF) && paint->set
3550 && (!base->set || sp_paint_differ(paint, base))))
3551 {
3552 CSSOStringStream css;
3554 if (paint->inherit) {
3555 css << "inherit";
3556 } else {
3557 if ( paint->value.href && paint->value.href->getURI() ) {
3558 const gchar* uri = paint->value.href->getURI()->toString();
3559 css << "url(" << uri << ")";
3560 }
3562 if ( paint->noneSet ) {
3563 if ( !css.str().empty() ) {
3564 css << " ";
3565 }
3566 css << "none";
3567 }
3569 if ( paint->currentcolor ) {
3570 if ( !css.str().empty() ) {
3571 css << " ";
3572 }
3573 css << "currentColor";
3574 }
3576 if ( paint->colorSet ) {
3577 if ( !css.str().empty() ) {
3578 css << " ";
3579 }
3580 char color_buf[8];
3581 sp_svg_write_color(color_buf, sizeof(color_buf), paint->value.color.toRGBA32( 0 ));
3582 css << color_buf;
3583 }
3585 if (paint->value.color.icc) {
3586 if ( !css.str().empty() ) {
3587 css << " ";
3588 }
3589 css << "icc-color(" << paint->value.color.icc->colorProfile;
3590 for (vector<double>::const_iterator i(paint->value.color.icc->colors.begin()),
3591 iEnd(paint->value.color.icc->colors.end());
3592 i != iEnd; ++i) {
3593 css << ", " << *i;
3594 }
3595 css << ')';
3596 }
3597 }
3599 if ( !css.str().empty() ) {
3600 retval = g_snprintf( b, len, "%s:%s;", key, css.gcharp() );
3601 }
3602 }
3604 return retval;
3605 }
3608 /**
3609 *
3610 */
3611 static bool
3612 sp_fontsize_differ(SPIFontSize const *const a, SPIFontSize const *const b)
3613 {
3614 if (a->type != b->type)
3615 return true;
3616 if (a->type == SP_FONT_SIZE_LENGTH) {
3617 if (a->computed != b->computed)
3618 return true;
3619 } else {
3620 if (a->value != b->value)
3621 return true;
3622 }
3623 return false;
3624 }
3627 /**
3628 * Write SPIFontSize object into string.
3629 */
3630 static gint
3631 sp_style_write_ifontsize(gchar *p, gint const len, gchar const *key,
3632 SPIFontSize const *const val, SPIFontSize const *const base,
3633 guint const flags)
3634 {
3635 if ((flags & SP_STYLE_FLAG_ALWAYS)
3636 || ((flags & SP_STYLE_FLAG_IFSET) && val->set)
3637 || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set
3638 && (!base->set || sp_fontsize_differ(val, base))))
3639 {
3640 if (val->inherit) {
3641 return g_snprintf(p, len, "%s:inherit;", key);
3642 } else if (val->type == SP_FONT_SIZE_LITERAL) {
3643 for (unsigned i = 0; enum_font_size[i].key; i++) {
3644 if (enum_font_size[i].value == static_cast< gint > (val->value) ) {
3645 return g_snprintf(p, len, "%s:%s;", key, enum_font_size[i].key);
3646 }
3647 }
3648 } else if (val->type == SP_FONT_SIZE_LENGTH) {
3649 Inkscape::CSSOStringStream os;
3650 os << key << ":" << val->computed << "px;"; // must specify px, see inkscape bug 1221626, mozilla bug 234789
3651 return g_strlcpy(p, os.str().c_str(), len);
3652 } else if (val->type == SP_FONT_SIZE_PERCENTAGE) {
3653 Inkscape::CSSOStringStream os;
3654 os << key << ":" << (SP_F8_16_TO_FLOAT(val->value) * 100.0) << "%;";
3655 return g_strlcpy(p, os.str().c_str(), len);
3656 }
3657 }
3658 return 0;
3659 }
3662 /**
3663 * Write SPIFilter object into string.
3664 */
3665 static gint
3666 sp_style_write_ifilter(gchar *p, gint const len, gchar const *key,
3667 SPIFilter const *const val, SPIFilter const *const base,
3668 guint const flags)
3669 {
3670 (void)base; // TODO
3671 if ((flags & SP_STYLE_FLAG_ALWAYS)
3672 || ((flags & SP_STYLE_FLAG_IFSET) && val->set)
3673 || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set))
3674 {
3675 if (val->inherit) {
3676 return g_snprintf(p, len, "%s:inherit;", key);
3677 } else if (val->href && val->href->getURI()) {
3678 return g_snprintf(p, len, "%s:url(%s);", key, val->href->getURI()->toString());
3679 }
3680 }
3683 return 0;
3684 }
3687 void SPIPaint::clear()
3688 {
3689 set = false;
3690 inherit = false;
3691 currentcolor = false;
3692 colorSet = false;
3693 noneSet = false;
3694 value.color.set( 0 );
3695 if ( value.href && value.href->getObject() )
3696 {
3697 value.href->detach();
3698 }
3699 }
3702 /**
3703 * Clear filter object, and disconnect style from paintserver (if present).
3704 */
3705 static void
3706 sp_style_filter_clear(SPStyle *style)
3707 {
3708 if (style->filter.href && style->filter.href->getObject())
3709 style->filter.href->detach();
3710 }
3713 // FIXME: Everything below this line belongs in a different file - css-chemistry?
3715 void
3716 sp_style_set_property_url (SPObject *item, gchar const *property, SPObject *linked, bool recursive)
3717 {
3718 Inkscape::XML::Node *repr = SP_OBJECT_REPR(item);
3720 if (repr == NULL) return;
3722 g_return_if_fail(linked != NULL);
3724 gchar *val = g_strdup_printf("url(#%s)", SP_OBJECT_ID(linked));
3726 SPCSSAttr *css = sp_repr_css_attr_new();
3727 sp_repr_css_set_property(css, property, val);
3728 g_free(val);
3729 if (recursive) {
3730 sp_repr_css_change_recursive(repr, css, "style");
3731 } else {
3732 sp_repr_css_change(repr, css, "style");
3733 }
3734 sp_repr_css_attr_unref(css);
3735 }
3738 /**
3739 * Clear all style property attributes in object.
3740 */
3741 void
3742 sp_style_unset_property_attrs(SPObject *o)
3743 {
3744 if (!o) return;
3746 SPStyle *style = SP_OBJECT_STYLE(o);
3747 if (!style) return;
3749 Inkscape::XML::Node *repr = SP_OBJECT_REPR(o);
3750 if (!repr) return;
3752 if (style->opacity.set) {
3753 repr->setAttribute("opacity", NULL);
3754 }
3755 if (style->color.set) {
3756 repr->setAttribute("color", NULL);
3757 }
3758 if (style->fill.set) {
3759 repr->setAttribute("fill", NULL);
3760 }
3761 if (style->fill_opacity.set) {
3762 repr->setAttribute("fill-opacity", NULL);
3763 }
3764 if (style->fill_rule.set) {
3765 repr->setAttribute("fill-rule", NULL);
3766 }
3767 if (style->stroke.set) {
3768 repr->setAttribute("stroke", NULL);
3769 }
3770 if (style->stroke_width.set) {
3771 repr->setAttribute("stroke-width", NULL);
3772 }
3773 if (style->stroke_linecap.set) {
3774 repr->setAttribute("stroke-linecap", NULL);
3775 }
3776 if (style->stroke_linejoin.set) {
3777 repr->setAttribute("stroke-linejoin", NULL);
3778 }
3779 if (style->marker[SP_MARKER_LOC].set) {
3780 repr->setAttribute("marker", NULL);
3781 }
3782 if (style->marker[SP_MARKER_LOC_START].set) {
3783 repr->setAttribute("marker-start", NULL);
3784 }
3785 if (style->marker[SP_MARKER_LOC_MID].set) {
3786 repr->setAttribute("marker-mid", NULL);
3787 }
3788 if (style->marker[SP_MARKER_LOC_END].set) {
3789 repr->setAttribute("marker-end", NULL);
3790 }
3791 if (style->stroke_opacity.set) {
3792 repr->setAttribute("stroke-opacity", NULL);
3793 }
3794 if (style->stroke_dasharray_set) {
3795 repr->setAttribute("stroke-dasharray", NULL);
3796 }
3797 if (style->stroke_dashoffset_set) {
3798 repr->setAttribute("stroke-dashoffset", NULL);
3799 }
3800 if (style->text_private && style->text->font_family.set) {
3801 repr->setAttribute("font-family", NULL);
3802 }
3803 if (style->text_anchor.set) {
3804 repr->setAttribute("text-anchor", NULL);
3805 }
3806 if (style->writing_mode.set) {
3807 repr->setAttribute("writing_mode", NULL);
3808 }
3809 if (style->filter.set) {
3810 repr->setAttribute("filter", NULL);
3811 }
3812 if (style->enable_background.set) {
3813 repr->setAttribute("enable-background", NULL);
3814 }
3815 }
3817 /**
3818 * \pre style != NULL.
3819 * \pre flags in {IFSET, ALWAYS}.
3820 */
3821 SPCSSAttr *
3822 sp_css_attr_from_style(SPStyle const *const style, guint const flags)
3823 {
3824 g_return_val_if_fail(style != NULL, NULL);
3825 g_return_val_if_fail(((flags == SP_STYLE_FLAG_IFSET) ||
3826 (flags == SP_STYLE_FLAG_ALWAYS) ),
3827 NULL);
3828 gchar *style_str = sp_style_write_string(style, flags);
3829 SPCSSAttr *css = sp_repr_css_attr_new();
3830 sp_repr_css_attr_add_from_string(css, style_str);
3831 g_free(style_str);
3832 return css;
3833 }
3836 /**
3837 * \pre object != NULL
3838 * \pre flags in {IFSET, ALWAYS}.
3839 */
3840 SPCSSAttr *
3841 sp_css_attr_from_object(SPObject *object, guint const flags)
3842 {
3843 g_return_val_if_fail(((flags == SP_STYLE_FLAG_IFSET) ||
3844 (flags == SP_STYLE_FLAG_ALWAYS) ),
3845 NULL);
3846 SPStyle const *const style = SP_OBJECT_STYLE(object);
3847 if (style == NULL)
3848 return NULL;
3849 return sp_css_attr_from_style(style, flags);
3850 }
3852 /**
3853 * Unset any text-related properties
3854 */
3855 SPCSSAttr *
3856 sp_css_attr_unset_text(SPCSSAttr *css)
3857 {
3858 sp_repr_css_set_property(css, "font", NULL); // not implemented yet
3859 sp_repr_css_set_property(css, "font-size", NULL);
3860 sp_repr_css_set_property(css, "font-size-adjust", NULL); // not implemented yet
3861 sp_repr_css_set_property(css, "font-style", NULL);
3862 sp_repr_css_set_property(css, "font-variant", NULL);
3863 sp_repr_css_set_property(css, "font-weight", NULL);
3864 sp_repr_css_set_property(css, "font-stretch", NULL);
3865 sp_repr_css_set_property(css, "font-family", NULL);
3866 sp_repr_css_set_property(css, "text-indent", NULL);
3867 sp_repr_css_set_property(css, "text-align", NULL);
3868 sp_repr_css_set_property(css, "text-decoration", NULL);
3869 sp_repr_css_set_property(css, "line-height", NULL);
3870 sp_repr_css_set_property(css, "letter-spacing", NULL);
3871 sp_repr_css_set_property(css, "word-spacing", NULL);
3872 sp_repr_css_set_property(css, "text-transform", NULL);
3873 sp_repr_css_set_property(css, "direction", NULL);
3874 sp_repr_css_set_property(css, "block-progression", NULL);
3875 sp_repr_css_set_property(css, "writing-mode", NULL);
3876 sp_repr_css_set_property(css, "text-anchor", NULL);
3877 sp_repr_css_set_property(css, "kerning", NULL); // not implemented yet
3878 sp_repr_css_set_property(css, "dominant-baseline", NULL); // not implemented yet
3879 sp_repr_css_set_property(css, "alignment-baseline", NULL); // not implemented yet
3880 sp_repr_css_set_property(css, "baseline-shift", NULL); // not implemented yet
3882 return css;
3883 }
3885 bool
3886 is_url(char const *p)
3887 {
3888 if (p == NULL)
3889 return false;
3890 /** \todo
3891 * FIXME: I'm not sure if this applies to SVG as well, but CSS2 says any URIs
3892 * in property values must start with 'url('.
3893 */
3894 return (g_ascii_strncasecmp(p, "url(", 4) == 0);
3895 }
3897 /**
3898 * Unset any properties that contain URI values.
3899 *
3900 * Used for storing style that will be reused across documents when carrying
3901 * the referenced defs is impractical.
3902 */
3903 SPCSSAttr *
3904 sp_css_attr_unset_uris(SPCSSAttr *css)
3905 {
3906 // All properties that may hold <uri> or <paint> according to SVG 1.1
3907 if (is_url(sp_repr_css_property(css, "clip-path", NULL))) sp_repr_css_set_property(css, "clip-path", NULL);
3908 if (is_url(sp_repr_css_property(css, "color-profile", NULL))) sp_repr_css_set_property(css, "color-profile", NULL);
3909 if (is_url(sp_repr_css_property(css, "cursor", NULL))) sp_repr_css_set_property(css, "cursor", NULL);
3910 if (is_url(sp_repr_css_property(css, "filter", NULL))) sp_repr_css_set_property(css, "filter", NULL);
3911 if (is_url(sp_repr_css_property(css, "marker-start", NULL))) sp_repr_css_set_property(css, "marker-start", NULL);
3912 if (is_url(sp_repr_css_property(css, "marker-mid", NULL))) sp_repr_css_set_property(css, "marker-mid", NULL);
3913 if (is_url(sp_repr_css_property(css, "marker-end", NULL))) sp_repr_css_set_property(css, "marker-end", NULL);
3914 if (is_url(sp_repr_css_property(css, "mask", NULL))) sp_repr_css_set_property(css, "mask", NULL);
3915 if (is_url(sp_repr_css_property(css, "fill", NULL))) sp_repr_css_set_property(css, "fill", NULL);
3916 if (is_url(sp_repr_css_property(css, "stroke", NULL))) sp_repr_css_set_property(css, "stroke", NULL);
3918 return css;
3919 }
3921 /**
3922 * Scale a single-value property.
3923 */
3924 void
3925 sp_css_attr_scale_property_single(SPCSSAttr *css, gchar const *property,
3926 double ex, bool only_with_units = false)
3927 {
3928 gchar const *w = sp_repr_css_property(css, property, NULL);
3929 if (w) {
3930 gchar *units = NULL;
3931 double wd = g_ascii_strtod(w, &units) * ex;
3932 if (w == units) {// nothing converted, non-numeric value
3933 return;
3934 }
3935 if (only_with_units && (units == NULL || *units == '\0' || *units == '%')) {
3936 // only_with_units, but no units found, so do nothing.
3937 return;
3938 }
3939 Inkscape::CSSOStringStream os;
3940 os << wd << units; // reattach units
3941 sp_repr_css_set_property(css, property, os.str().c_str());
3942 }
3943 }
3945 /**
3946 * Scale a list-of-values property.
3947 */
3948 void
3949 sp_css_attr_scale_property_list(SPCSSAttr *css, gchar const *property, double ex)
3950 {
3951 gchar const *string = sp_repr_css_property(css, property, NULL);
3952 if (string) {
3953 Inkscape::CSSOStringStream os;
3954 gchar **a = g_strsplit(string, ",", 10000);
3955 bool first = true;
3956 for (gchar **i = a; i != NULL; i++) {
3957 gchar *w = *i;
3958 if (w == NULL)
3959 break;
3960 gchar *units = NULL;
3961 double wd = g_ascii_strtod(w, &units) * ex;
3962 if (w == units) {// nothing converted, non-numeric value ("none" or "inherit"); do nothing
3963 g_strfreev(a);
3964 return;
3965 }
3966 if (!first) {
3967 os << ",";
3968 }
3969 os << wd << units; // reattach units
3970 first = false;
3971 }
3972 sp_repr_css_set_property(css, property, os.str().c_str());
3973 g_strfreev(a);
3974 }
3975 }
3977 /**
3978 * Scale any properties that may hold <length> by ex.
3979 */
3980 SPCSSAttr *
3981 sp_css_attr_scale(SPCSSAttr *css, double ex)
3982 {
3983 sp_css_attr_scale_property_single(css, "baseline-shift", ex);
3984 sp_css_attr_scale_property_single(css, "stroke-width", ex);
3985 sp_css_attr_scale_property_list (css, "stroke-dasharray", ex);
3986 sp_css_attr_scale_property_single(css, "stroke-dashoffset", ex);
3987 sp_css_attr_scale_property_single(css, "font-size", ex);
3988 sp_css_attr_scale_property_single(css, "kerning", ex);
3989 sp_css_attr_scale_property_single(css, "letter-spacing", ex);
3990 sp_css_attr_scale_property_single(css, "word-spacing", ex);
3991 sp_css_attr_scale_property_single(css, "line-height", ex, true);
3993 return css;
3994 }
3997 /**
3998 * Remove quotes and escapes from a string. Returned value must be g_free'd.
3999 * Note: in CSS (in style= and in stylesheets), unquoting and unescaping is done
4000 * by libcroco, our CSS parser, though it adds a new pair of "" quotes for the strings
4001 * it parsed for us. So this function is only used to remove those quotes and for
4002 * presentation attributes, without any unescaping. (XML unescaping
4003 * (& etc) is done by XML parser.)
4004 */
4005 gchar *
4006 attribute_unquote(gchar const *val)
4007 {
4008 if (val) {
4009 if (*val == '\'' || *val == '"') {
4010 int l = strlen(val);
4011 if (l >= 2) {
4012 if ( ( val[0] == '"' && val[l - 1] == '"' ) ||
4013 ( val[0] == '\'' && val[l - 1] == '\'' ) ) {
4014 return (g_strndup (val+1, l-2));
4015 }
4016 }
4017 }
4018 }
4020 return (val? g_strdup (val) : NULL);
4021 }
4023 /**
4024 * Quote and/or escape string for writing to CSS (style=). Returned value must be g_free'd.
4025 */
4026 gchar *
4027 css2_escape_quote(gchar const *val) {
4029 Glib::ustring t;
4030 bool quote = false;
4031 bool last_was_space = false;
4033 for (gchar const *i = val; *i; i++) {
4034 bool is_space = ( *i == ' ' );
4035 if (g_ascii_isalnum(*i) || *i=='-' || *i=='_') {
4036 // ASCII alphanumeric, - and _ don't require quotes
4037 t.push_back(*i);
4038 } else if ( is_space && !last_was_space ) {
4039 // non-consecutive spaces don't require quotes
4040 t.push_back(*i);
4041 } else if (*i=='\'') {
4042 // single quotes require escaping and quotes
4043 t.push_back('\\');
4044 t.push_back(*i);
4045 quote = true;
4046 } else {
4047 // everything else requires quotes
4048 t.push_back(*i);
4049 quote = true;
4050 }
4051 if (i == val && !g_ascii_isalpha(*i)) {
4052 // a non-ASCII/non-alpha initial character requires quotes
4053 quote = true;
4054 }
4055 last_was_space = is_space;
4056 }
4058 if (last_was_space) {
4059 // a trailing space requires quotes
4060 quote = true;
4061 }
4063 if (quote) {
4064 // we use single quotes so the result can be stored in an XML
4065 // attribute without incurring un-aesthetic additional quoting
4066 // (our XML emitter always uses double quotes)
4067 t.insert(t.begin(), '\'');
4068 t.push_back('\'');
4069 }
4071 return (t.empty() ? NULL : g_strdup (t.c_str()));
4072 }
4074 /*
4075 Local Variables:
4076 mode:c++
4077 c-file-style:"stroustrup"
4078 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
4079 indent-tabs-mode:nil
4080 fill-column:99
4081 End:
4082 */
4083 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :