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/* vim: set ts=8 sw=8 noexpandtab: */
/* The Gtk+ CSS Drawing Library.
* Copyright (C) 2008 Robert Staudinger
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include <ccss/ccss.h>
#include <gtk/gtk.h>
#include "ccss-gtk-functions.h"
#include "ccss-gtk-color.h"
#include "config.h"
#ifdef CCSS_WITH_SOUP
#include <libsoup/soup.h>
#endif
/*
* FIXME: make this bullet proof wrt uri scheme.
*/
static char *
url (GSList const *args,
void *user_data)
{
char *resolved_path;
char *ret;
#ifdef CCSS_WITH_SOUP
char *given_path;
SoupURI *uri;
g_return_val_if_fail (args, NULL);
given_path = g_strdup_printf ("file:///%s", (char const *) args->data);
uri = soup_uri_new (given_path);
g_free (given_path), given_path = NULL;
resolved_path = gtk_rc_find_pixmap_in_path (gtk_settings_get_default (), NULL, uri->path);
soup_uri_set_path (uri, resolved_path);
g_free (resolved_path), resolved_path = NULL;
ret = soup_uri_to_string (uri, FALSE);
soup_uri_free (uri), uri = NULL;
#else
char const *given_path;
g_return_val_if_fail (args, NULL);
given_path = (char const *) args->data;
resolved_path = gtk_rc_find_pixmap_in_path (gtk_settings_get_default (), NULL, given_path);
ret = g_strdup_printf ("file:///%s", resolved_path);
g_free (resolved_path), resolved_path = NULL;
#endif
return ret;
}
static gboolean
color_walk_r (GdkColor *color,
GSList const **args,
char const *function)
{
double factor;
char const *token;
gboolean ret;
g_return_val_if_fail (*args && (*args)->data, FALSE);
if (function)
token = function;
else
token = (char const *) (*args)->data;
if (0 == g_strcmp0 ("rgb(", token)) {
double red, green, blue;
if (!function) { *args = (*args)->next; if (!*args) return FALSE; }
/* red */
red = g_ascii_strtod ((char const *) (*args)->data, NULL);
*args = (*args)->next; if (!*args) return FALSE;
/* "," */
if (0 != g_strcmp0(",", (char const *) (*args)->data)) return FALSE;
*args = (*args)->next; if (!*args) return FALSE;
/* green */
green = g_ascii_strtod ((char const *) (*args)->data, NULL);
*args = (*args)->next; if (!*args) return FALSE;
/* "," */
if (0 != g_strcmp0(",", (char const *) (*args)->data)) return FALSE;
*args = (*args)->next; if (!*args) return FALSE;
/* blue */
blue = g_ascii_strtod ((char const *) (*args)->data, NULL);
if (!function) {
/* ")" */
*args = (*args)->next; if (!*args) return FALSE;
if (0 != g_strcmp0(")", (char const *) (*args)->data)) return FALSE;
}
color->red = (guint16) (red * 65535.0);
color->green = (guint16) (green * 65535.0);
color->blue = (guint16) (blue * 65535.0);
return TRUE;
} else if (0 == g_strcmp0 ("gtk-color(", token)) {
if (!function) { *args = (*args)->next; if (!*args) return FALSE; }
/* color */
ret = ccss_gtk_color_lookup ((char const *) (*args)->data, color);
if (!function) {
/* ")" */
*args = (*args)->next; if (!*args) return FALSE;
if (0 != g_strcmp0(")", (char const *) (*args)->data)) return FALSE;
}
return ret;
} else if (0 == g_strcmp0 ("gtk-mix(", token)) {
GdkColor color1;
GdkColor color2;
if (!function) { *args = (*args)->next; if (!*args) return FALSE; }
/* factor */
factor = g_ascii_strtod ((char const *) (*args)->data, NULL);
*args = (*args)->next; if (!*args) return FALSE;
/* "," */
if (0 != g_strcmp0(",", (char const *) (*args)->data)) return FALSE;
*args = (*args)->next; if (!*args) return FALSE;
/* color1 */
if (!color_walk_r (&color1, args, NULL)) return FALSE;
/* "," */
if (0 != g_strcmp0(",", (char const *) (*args)->data)) return FALSE;
*args = (*args)->next; if (!*args) return FALSE;
/* color2 */
if (!color_walk_r (&color2, args, NULL)) return FALSE;
if (!function) {
/* ")" */
*args = (*args)->next; if (!*args) return FALSE;
if (0 != g_strcmp0(")", (char const *) (*args)->data)) return FALSE;
}
return ccss_gtk_color_mix (factor, &color1, &color2, color);
} else if (0 == g_strcmp0 ("gtk-shade(", token)) {
if (!function) { *args = (*args)->next; if (!*args) return FALSE; }
/* factor */
factor = g_ascii_strtod ((char const *) (*args)->data, NULL);
*args = (*args)->next; if (!*args) return FALSE;
/* "," */
if (0 != g_strcmp0(",", (char const *) (*args)->data)) return FALSE;
*args = (*args)->next; if (!*args) return FALSE;
/* color */
if (!color_walk_r (color, args, NULL)) return FALSE;
if (!function) {
/* ")" */
*args = (*args)->next; if (!*args) return FALSE;
if (0 != g_strcmp0(")", (char const *) (*args)->data)) return FALSE;
}
return ccss_gtk_color_shade (factor, color);
} else if (0 == g_strcmp0 ("gtk-darker(", token)) {
if (!function) { *args = (*args)->next; if (!*args) return FALSE; }
/* color */
if (!color_walk_r (color, args, NULL)) return FALSE;
if (!function) {
/* ")" */
*args = (*args)->next; if (!*args) return FALSE;
if (0 != g_strcmp0(")", (char const *) (*args)->data)) return FALSE;
}
return ccss_gtk_color_shade (0.7, color);
} else if (0 == g_strcmp0 ("gtk-lighter(", token)) {
if (!function) { *args = (*args)->next; if (!*args) return FALSE; }
/* color */
if (!color_walk_r (color, args, NULL)) return FALSE;
if (!function) {
/* ")" */
*args = (*args)->next; if (!*args) return FALSE;
if (0 != g_strcmp0(")", (char const *) (*args)->data)) return FALSE;
}
return ccss_gtk_color_shade (1.3, color);
} else {
/* Color. */
ret = ccss_gtk_color_lookup (token, color);
*args = (*args)->next;
return ret;
}
return FALSE;
}
static char *
dump (GSList const *args)
{
GSList const *iter;
GString *str;
str = g_string_new (NULL);
for ( iter = args; iter != NULL; iter = iter->next) {
g_string_append (str, (char const *) iter->data);
}
return g_string_free (str, FALSE);
}
static char *
color (GSList const *args,
void *user_data)
{
GdkColor result;
gboolean ret;
g_return_val_if_fail (args && args->data, NULL);
ret = color_walk_r (&result, &args, "gtk-color(");
if (!ret) {
char *data;
data = dump (args);
g_warning ("Color could not be resolved: `gtk-color(%s)'", data);
return NULL;
}
return g_strdup_printf ("rgba(%f,%f,%f,1.0)", result.red / 65535.0,
result.green / 65535.0,
result.blue / 65535.0);
}
static char *
mix (GSList const *args,
void *user_data)
{
GSList const *iter;
GdkColor result;
gboolean ret;
g_return_val_if_fail (args && args->data, NULL);
iter = args;
ret = color_walk_r (&result, &iter, "gtk-mix(");
if (!ret) {
char *data;
data = dump (args);
g_warning ("Color could not be resolved: `gtk-mix(%s)'", data);
return NULL;
}
return g_strdup_printf ("rgba(%f,%f,%f,1.0)", result.red / 65535.0,
result.green / 65535.0,
result.blue / 65535.0);
}
static char *
shade (GSList const *args,
void *user_data)
{
GSList const *iter;
GdkColor result;
gboolean ret;
g_return_val_if_fail (args && args->data, NULL);
iter = args;
ret = color_walk_r (&result, &iter, "gtk-shade(");
if (!ret) {
char *data;
data = dump (args);
g_warning ("Color could not be resolved: `gtk-shade(%s)'", data);
return NULL;
}
return g_strdup_printf ("rgba(%f,%f,%f,1.0)", result.red / 65535.0,
result.green / 65535.0,
result.blue / 65535.0);
}
static char *
lighter (GSList const *args,
void *user_data)
{
GSList const *iter;
GdkColor result;
gboolean ret;
g_return_val_if_fail (args && args->data, NULL);
iter = args;
ret = color_walk_r (&result, &iter, "gtk-lighter(");
if (!ret) {
char *data;
data = dump (args);
g_warning ("Color could not be resolved: `gtk-lighter(%s)'", data);
return NULL;
}
return g_strdup_printf ("rgba(%f,%f,%f,1.0)", result.red / 65535.0,
result.green / 65535.0,
result.blue / 65535.0);
}
static char *
darker (GSList const *args,
void *user_data)
{
GSList const *iter;
GdkColor result;
gboolean ret;
g_return_val_if_fail (args && args->data, NULL);
iter = args;
ret = color_walk_r (&result, &iter, "gtk-darker(");
if (!ret) {
char *data;
data = dump (args);
g_warning ("Color could not be resolved: `gtk-darker(%s)'", data);
return NULL;
}
return g_strdup_printf ("rgba(%f,%f,%f,1.0)", result.red / 65535.0,
result.green / 65535.0,
result.blue / 65535.0);
}
static ccss_function_t const _functions[] =
{
{ "url", url, NULL },
{ "gtk-color", color, NULL },
{ "gtk-mix", mix, NULL },
{ "gtk-shade", shade, NULL },
{ "gtk-lighter", lighter, NULL },
{ "gtk-darker", darker, NULL },
{ NULL }
};
ccss_function_t const *
ccss_gtk_functions_get_vtable (void)
{
return _functions;
}
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