/**
* cr_rgb_set_from_term:
*@a_this: the instance of #CRRgb to set
*@a_value: the terminal from which to set
*
*Set the rgb from a terminal symbol
*
* Returns CR_OK upon successful completion, an error code otherwise.
*/
enum CRStatus
cr_rgb_set_from_term (CRRgb *a_this, const struct _CRTerm *a_value)
{
enum CRStatus status = CR_OK ;
g_return_val_if_fail (a_this && a_value,
CR_BAD_PARAM_ERROR) ;
switch(a_value->type) {
case TERM_RGB:
if (a_value->content.rgb) {
cr_rgb_set_from_rgb
(a_this, a_value->content.rgb) ;
}
break ;
case TERM_IDENT:
if (a_value->content.str
&& a_value->content.str->stryng
&& a_value->content.str->stryng->str) {
if (!strncmp ("inherit",
a_value->content.str->stryng->str,
sizeof ("inherit")-1)) {
a_this->inherit = TRUE;
a_this->is_transparent = FALSE ;
} else {
status = cr_rgb_set_from_name
(a_this,
a_value->content.str->stryng->str) ;
}
} else {
cr_utils_trace_info
("a_value has NULL string value") ;
}
break ;
case TERM_HASH:
if (a_value->content.str
&& a_value->content.str->stryng
&& a_value->content.str->stryng->str) {
status = cr_rgb_set_from_hex_str
(a_this,
a_value->content.str->stryng->str) ;
} else {
cr_utils_trace_info
("a_value has NULL string value") ;
}
break ;
default:
status = CR_UNKNOWN_TYPE_ERROR ;
}
return status ;
}
/**
* rsvg_css_parse_color:
* @str: string to parse
* @inherit: whether to inherit
*
* Parse a CSS2 color specifier, return RGB value
*
* Returns: and RGB value
*/
guint32
rsvg_css_parse_color (const char *str, gboolean * inherit)
{
gint val = 0;
SETINHERIT ();
if (str[0] == '#') {
int i;
for (i = 1; str[i]; i++) {
int hexval;
if (str[i] >= '0' && str[i] <= '9')
hexval = str[i] - '0';
else if (str[i] >= 'A' && str[i] <= 'F')
hexval = str[i] - 'A' + 10;
else if (str[i] >= 'a' && str[i] <= 'f')
hexval = str[i] - 'a' + 10;
else
break;
val = (val << 4) + hexval;
}
/* handle #rgb case */
if (i == 4) {
val = ((val & 0xf00) << 8) | ((val & 0x0f0) << 4) | (val & 0x00f);
val |= val << 4;
}
val |= 0xff000000; /* opaque */
}
else if (g_str_has_prefix (str, "rgb")) {
gint r, g, b, a;
gboolean has_alpha;
guint nb_toks;
char **toks;
r = g = b = 0;
a = 255;
if (str[3] == 'a') {
/* "rgba" */
has_alpha = TRUE;
str += 4;
}
else {
/* "rgb" */
has_alpha = FALSE;
str += 3;
}
str = strchr (str, '(');
if (str == NULL)
return val;
toks = rsvg_css_parse_list (str + 1, &nb_toks);
if (toks) {
if (nb_toks == (has_alpha ? 4 : 3)) {
r = rsvg_css_clip_rgb_percent (toks[0], 255.0);
g = rsvg_css_clip_rgb_percent (toks[1], 255.0);
b = rsvg_css_clip_rgb_percent (toks[2], 255.0);
if (has_alpha)
a = rsvg_css_clip_rgb_percent (toks[3], 1.0);
else
a = 255;
}
g_strfreev (toks);
}
val = PACK_RGBA (r, g, b, a);
} else if (!strcmp (str, "inherit"))
UNSETINHERIT ();
else {
CRRgb rgb;
if (cr_rgb_set_from_name (&rgb, (const guchar *) str) == CR_OK) {
val = PACK_RGB (rgb.red, rgb.green, rgb.blue);
} else {
/* default to opaque black on failed lookup */
UNSETINHERIT ();
val = PACK_RGB (0, 0, 0);
}
}
return val;
}
/**
* Parse a CSS2 color specifier, return RGB value
*/
guint32
rsvg_css_parse_color (const char *str, gboolean * inherit)
{
gint val = 0;
SETINHERIT ();
if (str[0] == '#') {
int i;
for (i = 1; str[i]; i++) {
int hexval;
if (str[i] >= '0' && str[i] <= '9')
hexval = str[i] - '0';
else if (str[i] >= 'A' && str[i] <= 'F')
hexval = str[i] - 'A' + 10;
else if (str[i] >= 'a' && str[i] <= 'f')
hexval = str[i] - 'a' + 10;
else
break;
val = (val << 4) + hexval;
}
/* handle #rgb case */
if (i == 4) {
val = ((val & 0xf00) << 8) | ((val & 0x0f0) << 4) | (val & 0x00f);
val |= val << 4;
}
}
/* i want to use g_str_has_prefix but it isn't in my gstrfuncs.h?? */
else if (strstr (str, "rgb") != NULL) {
gint r, g, b;
r = g = b = 0;
if (strstr (str, "%") != 0) {
guint i, nb_toks;
char **toks;
/* assume rgb (9%, 100%, 23%) */
for (i = 0; str[i] != '('; i++);
i++;
toks = rsvg_css_parse_list (str + i, &nb_toks);
if (toks) {
if (nb_toks == 3) {
r = rsvg_css_clip_rgb_percent (g_ascii_strtod (toks[0], NULL));
g = rsvg_css_clip_rgb_percent (g_ascii_strtod (toks[1], NULL));
b = rsvg_css_clip_rgb_percent (g_ascii_strtod (toks[2], NULL));
}
g_strfreev (toks);
}
} else {
/* assume "rgb (r, g, b)" */
if (3 == sscanf (str, " rgb ( %d , %d , %d ) ", &r, &g, &b)) {
r = rsvg_css_clip_rgb (r);
g = rsvg_css_clip_rgb (g);
b = rsvg_css_clip_rgb (b);
} else
r = g = b = 0;
}
val = PACK_RGB (r, g, b);
} else if (!strcmp (str, "inherit"))
UNSETINHERIT ();
else {
CRRgb rgb;
if (cr_rgb_set_from_name (&rgb, (const guchar *) str) == CR_OK) {
val = PACK_RGB (rgb.red, rgb.green, rgb.blue);
} else {
/* default to black on failed lookup */
UNSETINHERIT ();
val = 0;
}
}
return val;
}
