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-rw-r--r--ccss-gtk/ccss-gtk-functions.c385
1 files changed, 385 insertions, 0 deletions
diff --git a/ccss-gtk/ccss-gtk-functions.c b/ccss-gtk/ccss-gtk-functions.c
new file mode 100644
index 0000000..138ebf7
--- /dev/null
+++ b/ccss-gtk/ccss-gtk-functions.c
@@ -0,0 +1,385 @@
+/* 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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