void
svg_parse_color_from_style(fz_context *ctx, svg_document *doc, const char *str,
int *fill_is_set, float fill[3],
int *stroke_is_set, float stroke[3])
{
const char *p;
p = strstr(str, "fill:");
if (p)
{
p += 5;
while (*p && svg_is_whitespace(*p))
++p;
if (memcmp(p, "none", 4) != 0)
{
svg_parse_color(ctx, doc, p, fill);
*fill_is_set = 1;
}
}
p = strstr(str, "stroke:");
if (p)
{
p += 7;
while (*p && svg_is_whitespace(*p))
++p;
if (memcmp(p, "none", 4) != 0)
{
svg_parse_color(ctx, doc, p, stroke);
*stroke_is_set = 1;
}
}
}
/* Coordinate transformations */
fz_matrix
svg_parse_transform(fz_context *ctx, svg_document *doc, const char *str, fz_matrix transform)
{
char keyword[20];
int keywordlen;
float args[6];
int nargs;
nargs = 0;
keywordlen = 0;
while (*str)
{
while (svg_is_whitespace_or_comma(*str))
str ++;
if (*str == 0)
break;
/*
* Parse keyword and opening parenthesis.
*/
keywordlen = 0;
while (svg_is_alpha(*str) && keywordlen < sizeof(keyword) - 1)
keyword[keywordlen++] = *str++;
keyword[keywordlen] = 0;
if (keywordlen == 0)
fz_throw(ctx, FZ_ERROR_SYNTAX, "expected keyword in transform attribute");
while (svg_is_whitespace(*str))
str ++;
if (*str != '(')
fz_throw(ctx, FZ_ERROR_SYNTAX, "expected opening parenthesis in transform attribute");
str ++;
/*
* Parse list of numbers until closing parenthesis
*/
nargs = 0;
while (*str && *str != ')' && nargs < 6)
{
while (svg_is_whitespace_or_comma(*str))
str ++;
if (svg_is_digit(*str))
str = svg_lex_number(&args[nargs++], str);
}
if (*str != ')')
fz_throw(ctx, FZ_ERROR_SYNTAX, "expected closing parenthesis in transform attribute");
str ++;
/*
* Execute the transform.
*/
if (!strcmp(keyword, "matrix"))
{
fz_matrix m;
if (nargs != 6)
fz_throw(ctx, FZ_ERROR_SYNTAX, "wrong number of arguments to matrix(): %d", nargs);
m.a = args[0];
m.b = args[1];
m.c = args[2];
m.d = args[3];
m.e = args[4];
m.f = args[5];
transform = fz_concat(transform, m);
}
else if (!strcmp(keyword, "translate"))
{
if (nargs != 2)
fz_throw(ctx, FZ_ERROR_SYNTAX, "wrong number of arguments to translate(): %d", nargs);
transform = fz_pre_translate(transform, args[0], args[1]);
}
else if (!strcmp(keyword, "scale"))
{
if (nargs == 1)
transform = fz_pre_scale(transform, args[0], args[0]);
else if (nargs == 2)
transform = fz_pre_scale(transform, args[0], args[1]);
else
fz_throw(ctx, FZ_ERROR_SYNTAX, "wrong number of arguments to scale(): %d", nargs);
}
else if (!strcmp(keyword, "rotate"))
{
if (nargs != 1)
fz_throw(ctx, FZ_ERROR_SYNTAX, "wrong number of arguments to rotate(): %d", nargs);
transform = fz_pre_rotate(transform, args[0]);
}
else if (!strcmp(keyword, "skewX"))
{
fz_matrix m;
if (nargs != 1)
fz_throw(ctx, FZ_ERROR_SYNTAX, "wrong number of arguments to skewX(): %d", nargs);
m.a = 1;
m.b = 0;
m.c = tanf(args[0] * FZ_DEGREE);
m.d = 1;
m.e = 0;
m.f = 0;
transform = fz_concat(transform, m);
}
else if (!strcmp(keyword, "skewY"))
{
fz_matrix m;
if (nargs != 1)
fz_throw(ctx, FZ_ERROR_SYNTAX, "wrong number of arguments to skewY(): %d", nargs);
m.a = 1;
m.b = tanf(args[0] * FZ_DEGREE);
m.c = 0;
m.d = 1;
m.e = 0;
m.f = 0;
transform = fz_concat(transform, m);
}
else
{
fz_throw(ctx, FZ_ERROR_SYNTAX, "unknown transform function: %s", keyword);
}
}
return transform;
}
