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source: trunk/third/librsvg/rsvg-css.c @ 18609

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Revision 18609, 20.4 KB checked in by ghudson, 21 years ago (diff)
This commit was generated by cvs2svn to compensate for changes in r18608, which included commits to RCS files with non-trunk default branches.

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1	/* vim: set sw=4: -- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -- */
2	/*
3	rsvg-css.c: Parse CSS basic data types.
4
5	Copyright (C) 2000 Eazel, Inc.
6
7	This program is free software; you can redistribute it and/or
8	modify it under the terms of the GNU Library General Public License as
9	published by the Free Software Foundation; either version 2 of the
10	License, or (at your option) any later version.
11
12	This program is distributed in the hope that it will be useful,
13	but WITHOUT ANY WARRANTY; without even the implied warranty of
14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15	Library General Public License for more details.
16
17	You should have received a copy of the GNU Library General Public
18	License along with this program; if not, write to the
19	Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20	Boston, MA 02111-1307, USA.
21
22	Author: Raph Levien <raph@artofcode.com>
23	*/
24
25	#include "config.h"
26	#include "rsvg-css.h"
27
28	#include <glib.h>
29	#include <math.h>
30	#include <stdlib.h>
31	#include <string.h>
32	#include <errno.h>
33	#include <stdio.h>
34
35	#ifndef M_PI
36	#define M_PI 3.14159265358979323846
37	#endif /* M_PI */
38
39	#define POINTS_PER_INCH (72.0)
40	#define CM_PER_INCH (2.54)
41	#define MM_PER_INCH (25.4)
42	#define PICA_PER_INCH (6.0)
43
44	/**
45	* rsvg_css_parse_vbox
46	* @vbox: The CSS viewBox
47	* @x : The X output
48	* @y: The Y output
49	* @w: The Width output
50	* @h: The Height output
51	*
52	* Returns: Success or failure
53	*/
54	gboolean
55	rsvg_css_parse_vbox (const char * vbox, double * x, double * y,
56	double * w, double * h)
57	{
58	/* TODO: make me cleaner and more efficient */
59	char ptr, tok;
60	char *str = g_strdup (vbox);
61	gboolean has_vbox = FALSE;
62
63	tok = strtok_r (str, ", \t", &ptr);
64	if (tok != NULL) {
65	*x = g_ascii_strtod (tok, NULL);
66	tok = strtok_r (NULL, ", \t", &ptr);
67	if (tok != NULL) {
68	*y = g_ascii_strtod (tok, NULL);
69	tok = strtok_r (NULL, ", \t", &ptr);
70	if (tok != NULL) {
71	*w = g_ascii_strtod (tok, NULL);
72	tok = strtok_r (NULL, ", \t", &ptr);
73	if (tok != NULL) {
74	*h = g_ascii_strtod (tok, NULL);
75	has_vbox = TRUE;
76	}
77	}
78	}
79	}
80	g_free (str);
81
82	return has_vbox;
83	}
84
85	/**
86	* rsvg_css_parse_length: Parse CSS2 length to a pixel value.
87	* @str: Original string.
88	* @pixels_per_inch: Pixels per inch
89	* @fixed: Where to store boolean value of whether length is fixed.
90	*
91	* Parses a CSS2 length into a pixel value.
92	*
93	* Returns: returns the length.
94	**/
95	double
96	rsvg_css_parse_length (const char *str, gdouble pixels_per_inch,
97	gint percent, gint em, gint *ex)
98	{
99	double length = 0.0;
100	char *p = NULL;
101
102	/*
103	* The supported CSS length unit specifiers are:
104	* em, ex, px, pt, pc, cm, mm, in, and %
105	*/
106	*percent = FALSE;
107	*em = FALSE;
108	*ex = FALSE;
109
110	length = g_ascii_strtod (str, &p);
111
112	/* todo: error condition - figure out how to best represent it */
113	if ((length == -HUGE_VAL \|\| length == HUGE_VAL) && (ERANGE == errno))
114	return 0.0;
115
116	/* test for either pixels or no unit, which is assumed to be pixels */
117	if (p && (strcmp(p, "px") != 0))
118	{
119	if (!strcmp(p, "pt"))
120	length *= (pixels_per_inch / POINTS_PER_INCH);
121	else if (!strcmp(p, "in"))
122	length *= pixels_per_inch;
123	else if (!strcmp(p, "cm"))
124	length *= (pixels_per_inch / CM_PER_INCH);
125	else if (!strcmp(p, "mm"))
126	length *= (pixels_per_inch / MM_PER_INCH);
127	else if (!strcmp(p, "pc"))
128	length *= (pixels_per_inch / PICA_PER_INCH);
129	else if (!strcmp(p, "em"))
130	*em = TRUE;
131	else if (!strcmp(p, "ex"))
132	*ex = TRUE;
133	else if (!strcmp(p, "%"))
134	{
135	*percent = TRUE;
136	length *= 0.01;
137	}
138	}
139
140	return length;
141	}
142
143	/**
144	* rsvg_css_parse_normalized_length: Parse CSS2 length to a pixel value.
145	* @str: Original string.
146	* @pixels_per_inch: Pixels per inch
147	* @normalize_to: Bounding box's width or height, as appropriate, or 0
148	*
149	* Parses a CSS2 length into a pixel value.
150	*
151	* Returns: returns the length.
152	*/
153	double
154	rsvg_css_parse_normalized_length(const char *str, gdouble pixels_per_inch,
155	gdouble width_or_height, gdouble font_size)
156	{
157	double length;
158	gint percent, em, ex;
159	percent = em = ex = FALSE;
160
161	length = rsvg_css_parse_length (str, pixels_per_inch, &percent, &em, &ex);
162	if (percent)
163	return length * width_or_height;
164	else if (em)
165	return length * font_size;
166	else if (ex)
167	return length * font_size * 2.0; /* stolen from imagemagick */
168	else
169	return length;
170	}
171
172	gboolean
173	rsvg_css_param_match (const char str, const char param_name)
174	{
175	int i;
176
177	for (i = 0; str[i] != '\0' && str[i] != ':'; i++)
178	if (param_name[i] != str[i])
179	return FALSE;
180	return str[i] == ':' && param_name[i] == '\0';
181	}
182
183	int
184	rsvg_css_param_arg_offset (const char *str)
185	{
186	int i;
187
188	for (i = 0; str[i] != '\0' && str[i] != ':'; i++);
189	if (str[i] != '\0') i++;
190	for (; str[i] == ' '; i++);
191	return i;
192	}
193
194	static gint
195	rsvg_css_clip_rgb_percent (gint in_percent)
196	{
197	/* spec says to clip these values */
198	if (in_percent > 100)
199	in_percent = 100;
200	else if (in_percent <= 0)
201	return 0;
202
203	return (gint)floor(255. * (double)in_percent / 100. + 0.5);
204	}
205
206	static gint
207	rsvg_css_clip_rgb (gint rgb)
208	{
209	/* spec says to clip these values */
210	if (rgb > 255)
211	rgb = 255;
212	else if (rgb < 0)
213	rgb = 0;
214
215	return rgb;
216	}
217
218	typedef struct
219	{
220	const char * name;
221	guint rgb;
222	} ColorPair;
223
224	/* compare function callback for bsearch */
225	static int
226	rsvg_css_color_compare (const void * a, const void * b)
227	{
228	const char * needle = (const char *)a;
229	const ColorPair * haystack = (const ColorPair *)b;
230
231	return g_ascii_strcasecmp (needle, haystack->name);
232	}
233
234	/* pack 3 [0,255] ints into one 32 bit one */
235	#define PACK_RGB(r,g,b) (((r) << 16) \| ((g) << 8) \| (b))
236
237	/**
238	* Parse a CSS2 color specifier, return RGB value
239	*/
240	guint32
241	rsvg_css_parse_color (const char *str)
242	{
243	gint val = 0;
244
245	if (str[0] == '#')
246	{
247	int i;
248	for (i = 1; str[i]; i++)
249	{
250	int hexval;
251	if (str[i] >= '0' && str[i] <= '9')
252	hexval = str[i] - '0';
253	else if (str[i] >= 'A' && str[i] <= 'F')
254	hexval = str[i] - 'A' + 10;
255	else if (str[i] >= 'a' && str[i] <= 'f')
256	hexval = str[i] - 'a' + 10;
257	else
258	break;
259	val = (val << 4) + hexval;
260	}
261	/* handle #rgb case */
262	if (i == 4)
263	{
264	val = ((val & 0xf00) << 8) \|
265	((val & 0x0f0) << 4) \|
266	(val & 0x00f);
267	val \|= val << 4;
268	}
269	}
270	/* i want to use g_str_has_prefix but it isn't in my gstrfuncs.h?? */
271	else if (strstr (str, "rgb") != NULL)
272	{
273	gint r, g, b;
274	r = g = b = 0;
275
276	if (strstr (str, "%") != 0)
277	{
278	/* assume "rgb (r%, g%, b%)" */
279	if (3 == sscanf (str, " rgb ( %d %% , %d %% , %d %% ) ", &r, &g, &b))
280	{
281	r = rsvg_css_clip_rgb_percent (r);
282	g = rsvg_css_clip_rgb_percent (g);
283	b = rsvg_css_clip_rgb_percent (b);
284	}
285	else
286	r = g = b = 0;
287	}
288	else
289	{
290	/* assume "rgb (r, g, b)" */
291	if (3 == sscanf (str, " rgb ( %d , %d , %d ) ", &r, &g, &b))
292	{
293	r = rsvg_css_clip_rgb (r);
294	g = rsvg_css_clip_rgb (g);
295	b = rsvg_css_clip_rgb (b);
296	}
297	else
298	r = g = b = 0;
299	}
300
301	val = PACK_RGB (r,g,b);
302	}
303	else
304	{
305	const static ColorPair color_list [] =
306	{
307	{ "aliceblue", PACK_RGB (240,248,255) },
308	{ "antiquewhite", PACK_RGB (250,235,215) },
309	{ "aqua", PACK_RGB (0,255,255) },
310	{ "aquamarine", PACK_RGB (127,255,212) },
311	{ "azure", PACK_RGB (240,255,255) },
312	{ "beige", PACK_RGB (245,245,220) },
313	{ "bisque", PACK_RGB (255,228,196) },
314	{ "black", PACK_RGB (0,0,0) },
315	{ "blanchedalmond", PACK_RGB (255,235,205) },
316	{ "blue", PACK_RGB (0,0,255) },
317	{ "blueviolet", PACK_RGB (138,43,226) },
318	{ "brown", PACK_RGB (165,42,42) },
319	{ "burlywood", PACK_RGB (222,184,135) },
320	{ "cadetblue", PACK_RGB (95,158,160) },
321	{ "chartreuse", PACK_RGB (127,255,0) },
322	{ "chocolate", PACK_RGB (210,105,30) },
323	{ "coral", PACK_RGB (255,127,80) },
324	{ "cornflowerblue", PACK_RGB (100,149,237) },
325	{ "cornsilk", PACK_RGB (255,248,220) },
326	{ "crimson", PACK_RGB (220,20,60) },
327	{ "cyan", PACK_RGB (0,255,255) },
328	{ "darkblue", PACK_RGB (0,0,139) },
329	{ "darkcyan", PACK_RGB (0,139,139) },
330	{ "darkgoldenrod", PACK_RGB (184,132,11) },
331	{ "darkgray", PACK_RGB (169,169,168) },
332	{ "darkgreen", PACK_RGB (0,100,0) },
333	{ "darkgrey", PACK_RGB (169,169,169) },
334	{ "darkkhaki", PACK_RGB (189,183,107) },
335	{ "darkmagenta", PACK_RGB (139,0,139) },
336	{ "darkolivegreen", PACK_RGB (85,107,47) },
337	{ "darkorange", PACK_RGB (255,140,0) },
338	{ "darkorchid", PACK_RGB (153,50,204) },
339	{ "darkred", PACK_RGB (139,0,0) },
340	{ "darksalmon", PACK_RGB (233,150,122) },
341	{ "darkseagreen", PACK_RGB (143,188,143) },
342	{ "darkslateblue", PACK_RGB (72,61,139) },
343	{ "darkslategray", PACK_RGB (47,79,79) },
344	{ "darkslategrey", PACK_RGB (47,79,79) },
345	{ "darkturquoise", PACK_RGB (0,206,209) },
346	{ "darkviolet", PACK_RGB (148,0,211) },
347	{ "deeppink", PACK_RGB (255,20,147) },
348	{ "deepskyblue", PACK_RGB (0,191,255) },
349	{ "dimgray", PACK_RGB (105,105,105) },
350	{ "dimgrey", PACK_RGB (105,105,105) },
351	{ "dogerblue", PACK_RGB (30,144,255) },
352	{ "firebrick", PACK_RGB (178,34,34) },
353	{ "floralwhite" , PACK_RGB (255,255,240)},
354	{ "forestgreen", PACK_RGB (34,139,34) },
355	{ "fuchsia", PACK_RGB (255,0,255) },
356	{ "gainsboro", PACK_RGB (220,220,220) },
357	{ "ghostwhite", PACK_RGB (248,248,255) },
358	{ "gold", PACK_RGB (215,215,0) },
359	{ "goldenrod", PACK_RGB (218,165,32) },
360	{ "gray", PACK_RGB (128,128,128) },
361	{ "grey", PACK_RGB (128,128,128) },
362	{ "green", PACK_RGB (0,128,0)},
363	{ "greenyellow", PACK_RGB (173,255,47) },
364	{ "honeydew", PACK_RGB (240,255,240) },
365	{ "hotpink", PACK_RGB (255,105,180) },
366	{ "indianred", PACK_RGB (205,92,92) },
367	{ "indigo", PACK_RGB (75,0,130) },
368	{ "ivory", PACK_RGB (255,255,240) },
369	{ "khaki", PACK_RGB (240,230,140) },
370	{ "lavender", PACK_RGB (230,230,250) },
371	{ "lavenderblush", PACK_RGB (255,240,245) },
372	{ "lawngreen", PACK_RGB (124,252,0) },
373	{ "lemonchiffon", PACK_RGB (255,250,205) },
374	{ "lightblue", PACK_RGB (173,216,230) },
375	{ "lightcoral", PACK_RGB (240,128,128) },
376	{ "lightcyan", PACK_RGB (224,255,255) },
377	{ "lightgoldenrodyellow", PACK_RGB (250,250,210) },
378	{ "lightgray", PACK_RGB (211,211,211) },
379	{ "lightgreen", PACK_RGB (144,238,144) },
380	{ "lightgrey", PACK_RGB (211,211,211) },
381	{ "lightpink", PACK_RGB (255,182,193) },
382	{ "lightsalmon", PACK_RGB (255,160,122) },
383	{ "lightseagreen", PACK_RGB (32,178,170) },
384	{ "lightskyblue", PACK_RGB (135,206,250) },
385	{ "lightslategray", PACK_RGB (119,136,153) },
386	{ "lightslategrey", PACK_RGB (119,136,153) },
387	{ "lightsteelblue", PACK_RGB (176,196,222) },
388	{ "lightyellow", PACK_RGB (255,255,224) },
389	{ "lime", PACK_RGB (0,255,0) },
390	{ "limegreen", PACK_RGB (50,205,50) },
391	{ "linen", PACK_RGB (250,240,230) },
392	{ "magenta", PACK_RGB (255,0,255) },
393	{ "maroon", PACK_RGB (128,0,0) },
394	{ "mediumaquamarine", PACK_RGB (102,205,170) },
395	{ "mediumblue", PACK_RGB (0,0,205) },
396	{ "mediumorchid", PACK_RGB (186,85,211) },
397	{ "mediumpurple", PACK_RGB (147,112,219) },
398	{ "mediumseagreen", PACK_RGB (60,179,113) },
399	{ "mediumslateblue", PACK_RGB (123,104,238) },
400	{ "mediumspringgreen", PACK_RGB (0,250,154) },
401	{ "mediumturquoise", PACK_RGB (72,209,204) },
402	{ "mediumvioletred", PACK_RGB (199,21,133) },
403	{ "mediumnightblue", PACK_RGB (25,25,112) },
404	{ "mintcream", PACK_RGB (245,255,250) },
405	{ "mintyrose", PACK_RGB (255,228,225) },
406	{ "moccasin", PACK_RGB (255,228,181) },
407	{ "navajowhite", PACK_RGB (255,222,173) },
408	{ "navy", PACK_RGB (0,0,128) },
409	{ "oldlace", PACK_RGB (253,245,230) },
410	{ "olive", PACK_RGB (128,128,0) },
411	{ "oliverab", PACK_RGB (107,142,35) },
412	{ "orange", PACK_RGB (255,165,0) },
413	{ "orangered", PACK_RGB (255,69,0) },
414	{ "orchid", PACK_RGB (218,112,214) },
415	{ "palegoldenrod", PACK_RGB (238,232,170) },
416	{ "palegreen", PACK_RGB (152,251,152) },
417	{ "paleturquoise", PACK_RGB (175,238,238) },
418	{ "palevioletred", PACK_RGB (219,112,147) },
419	{ "papayawhip", PACK_RGB (255,239,213) },
420	{ "peachpuff", PACK_RGB (255,218,185) },
421	{ "peru", PACK_RGB (205,133,63) },
422	{ "pink", PACK_RGB (255,192,203) },
423	{ "plum", PACK_RGB (221,160,203) },
424	{ "powderblue", PACK_RGB (176,224,230) },
425	{ "purple", PACK_RGB (128,0,128) },
426	{ "red", PACK_RGB (255,0,0) },
427	{ "rosybrown", PACK_RGB (188,143,143) },
428	{ "royalblue", PACK_RGB (65,105,225) },
429	{ "saddlebrown", PACK_RGB (139,69,19) },
430	{ "salmon", PACK_RGB (250,128,114) },
431	{ "sandybrown", PACK_RGB (244,164,96) },
432	{ "seagreen", PACK_RGB (46,139,87) },
433	{ "seashell", PACK_RGB (255,245,238) },
434	{ "sienna", PACK_RGB (160,82,45) },
435	{ "silver", PACK_RGB (192,192,192) },
436	{ "skyblue", PACK_RGB (135,206,235) },
437	{ "slateblue", PACK_RGB (106,90,205) },
438	{ "slategray", PACK_RGB (112,128,144) },
439	{ "slategrey", PACK_RGB (112,128,114) },
440	{ "snow", PACK_RGB (255,255,250) },
441	{ "springgreen", PACK_RGB (0,255,127) },
442	{ "steelblue", PACK_RGB (70,130,180) },
443	{ "tan", PACK_RGB (210,180,140) },
444	{ "teal", PACK_RGB (0,128,128) },
445	{ "thistle", PACK_RGB (216,191,216) },
446	{ "tomato", PACK_RGB (255,99,71) },
447	{ "turquoise", PACK_RGB (64,224,208) },
448	{ "violet", PACK_RGB (238,130,238) },
449	{ "wheat", PACK_RGB (245,222,179) },
450	{ "white", PACK_RGB (255,255,255) },
451	{ "whitesmoke", PACK_RGB (245,245,245) },
452	{ "yellow", PACK_RGB (255,255,0) },
453	{ "yellowgreen", PACK_RGB (154,205,50) }
454	};
455
456	ColorPair * result = bsearch (str, color_list,
457	sizeof (color_list)/sizeof (color_list[0]),
458	sizeof (ColorPair),
459	rsvg_css_color_compare);
460
461	/* default to black on failed lookup */
462	if (result == NULL)
463	val = 0;
464	else
465	val = result->rgb;
466	}
467
468	return val;
469	}
470
471	#undef PACK_RGB
472
473	guint
474	rsvg_css_parse_opacity (const char *str)
475	{
476	char *end_ptr;
477	double opacity;
478
479	opacity = g_ascii_strtod (str, &end_ptr);
480
481	if (end_ptr && end_ptr[0] == '%')
482	opacity *= 0.01;
483
484	return (guint)floor (opacity * 255. + 0.5);
485	}
486
487	/*
488	<angle>: An angle value is a <number> optionally followed immediately with
489	an angle unit identifier. Angle unit identifiers are:
490
491	* deg: degrees
492	* grad: grads
493	* rad: radians
494
495	For properties defined in [CSS2], an angle unit identifier must be provided.
496	For SVG-specific attributes and properties, the angle unit identifier is
497	optional. If not provided, the angle value is assumed to be in degrees.
498	*/
499	double
500	rsvg_css_parse_angle (const char * str)
501	{
502	double degrees;
503	char *end_ptr;
504
505	degrees = g_ascii_strtod (str, &end_ptr);
506
507	/* todo: error condition - figure out how to best represent it */
508	if ((degrees == -HUGE_VAL \|\| degrees == HUGE_VAL) && (ERANGE == errno))
509	return 0.0;
510
511	if (end_ptr)
512	{
513	if (!strcmp(end_ptr, "rad"))
514	return degrees * 180. / M_PI;
515	else if (!strcmp(end_ptr, "grad"))
516	return degrees * 360. / 400.;
517	}
518
519	return degrees;
520	}
521
522	/*
523	<frequency>: Frequency values are used with aural properties. The normative
524	definition of frequency values can be found in [CSS2-AURAL]. A frequency
525	value is a <number> immediately followed by a frequency unit identifier.
526	Frequency unit identifiers are:
527
528	* Hz: Hertz
529	* kHz: kilo Hertz
530
531	Frequency values may not be negative.
532	*/
533	double
534	rsvg_css_parse_frequency (const char * str)
535	{
536	double hz;
537	char *end_ptr;
538
539	hz = g_ascii_strtod (str, &end_ptr);
540
541	/* todo: error condition - figure out how to best represent it */
542	if ((hz == -HUGE_VAL \|\| hz == HUGE_VAL) && (ERANGE == errno))
543	return 0.0;
544
545	if (end_ptr && !strcmp(end_ptr, "kHz"))
546	return hz * 1000.;
547
548	return hz;
549	}
550
551	/*
552	<time>: A time value is a <number> immediately followed by a time unit
553	identifier. Time unit identifiers are:
554
555	* ms: milliseconds
556	* s: seconds
557
558	Time values are used in CSS properties and may not be negative.
559	*/
560	double
561	rsvg_css_parse_time (const char * str)
562	{
563	double ms;
564	char *end_ptr;
565
566	ms = g_ascii_strtod (str, &end_ptr);
567
568	/* todo: error condition - figure out how to best represent it */
569	if ((ms == -HUGE_VAL \|\| ms == HUGE_VAL) && (ERANGE == errno))
570	return 0.0;
571
572	if (end_ptr && !strcmp (end_ptr, "s"))
573	return ms * 1000.;
574
575	return ms;
576	}
577
578	PangoStyle
579	rsvg_css_parse_font_style (const char * str, PangoStyle inherit)
580	{
581	if (str)
582	{
583	if (!strcmp(str, "oblique"))
584	return PANGO_STYLE_OBLIQUE;
585	if (!strcmp(str, "italic"))
586	return PANGO_STYLE_ITALIC;
587	else if (!strcmp(str, "inherit"))
588	return inherit;
589	}
590	return PANGO_STYLE_NORMAL;
591	}
592
593	PangoVariant
594	rsvg_css_parse_font_variant (const char * str, PangoVariant inherit)
595	{
596	if (str)
597	{
598	if (!strcmp(str, "small-caps"))
599	return PANGO_VARIANT_SMALL_CAPS;
600	else if (!strcmp(str, "inherit"))
601	return inherit;
602	}
603	return PANGO_VARIANT_NORMAL;
604	}
605
606	PangoWeight
607	rsvg_css_parse_font_weight (const char * str, PangoWeight inherit)
608	{
609	if (str)
610	{
611	if (!strcmp (str, "lighter"))
612	return PANGO_WEIGHT_LIGHT;
613	else if (!strcmp (str, "bold"))
614	return PANGO_WEIGHT_BOLD;
615	else if (!strcmp (str, "bolder"))
616	return PANGO_WEIGHT_ULTRABOLD;
617	else if (!strcmp (str, "100"))
618	return (PangoWeight)100;
619	else if (!strcmp (str, "200"))
620	return (PangoWeight)200;
621	else if (!strcmp (str, "300"))
622	return (PangoWeight)300;
623	else if (!strcmp (str, "400"))
624	return (PangoWeight)400;
625	else if (!strcmp (str, "500"))
626	return (PangoWeight)500;
627	else if (!strcmp (str, "600"))
628	return (PangoWeight)600;
629	else if (!strcmp (str, "700"))
630	return (PangoWeight)700;
631	else if (!strcmp (str, "800"))
632	return (PangoWeight)800;
633	else if (!strcmp (str, "900"))
634	return (PangoWeight)900;
635	else if (!strcmp(str, "inherit"))
636	return inherit;
637	}
638
639	return PANGO_WEIGHT_NORMAL;
640	}
641
642	PangoStretch
643	rsvg_css_parse_font_stretch (const char * str, PangoStretch inherit)
644	{
645	if (str)
646	{
647	if (!strcmp (str, "ultra-condensed"))
648	return PANGO_STRETCH_ULTRA_CONDENSED;
649	else if (!strcmp (str, "extra-condensed"))
650	return PANGO_STRETCH_EXTRA_CONDENSED;
651	else if (!strcmp (str, "condensed") \|\| !strcmp (str, "narrower")) /* narrower not quite correct */
652	return PANGO_STRETCH_CONDENSED;
653	else if (!strcmp (str, "semi-condensed"))
654	return PANGO_STRETCH_SEMI_CONDENSED;
655	else if (!strcmp (str, "semi-expanded"))
656	return PANGO_STRETCH_SEMI_EXPANDED;
657	else if (!strcmp (str, "expanded") \|\| !strcmp (str, "wider")) /* wider not quite correct */
658	return PANGO_STRETCH_EXPANDED;
659	else if (!strcmp (str, "extra-expanded"))
660	return PANGO_STRETCH_EXTRA_EXPANDED;
661	else if (!strcmp (str, "ultra-expanded"))
662	return PANGO_STRETCH_ULTRA_EXPANDED;
663	else if (!strcmp(str, "inherit"))
664	return inherit;
665	}
666	return PANGO_STRETCH_NORMAL;
667	}
668
669	const char *
670	rsvg_css_parse_font_family (const char * str, const char * inherit)
671	{
672	if (!str)
673	return NULL;
674
675	if (!strcmp (str, "inherit"))
676	return inherit;
677	else
678	return str;
679	}

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