add common system colour implementation

desktop/Makefile

@@ -3,7 +3,7 @@
 S_DESKTOP := cookies.c history_global_core.c hotlist.c knockout.c	\
 	mouse.c plot_style.c print.c search.c searchweb.c	\
 	scrollbar.c sslcert.c textarea.c thumbnail.c tree.c 		\
-	tree_url_node.c version.c
+	tree_url_node.c version.c system_colour.c
 
 S_DESKTOP := $(addprefix desktop/,$(S_DESKTOP))
 

desktop/system_colour.c

@@ -0,0 +1,102 @@
+/*
+ * Copyright 2011 Vincent Sanders <vince@netsurf-browser.org>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** \file
+ * System colour handling
+ *
+ */
+
+#include "utils/utils.h"
+#include "utils/log.h"
+#include "desktop/gui.h"
+#include "utils/nsoption.h"
+
+
+
+#define colour_list_len ((NSOPTION_SYS_COLOUR_END - NSOPTION_SYS_COLOUR_START) + 1)
+
+static lwc_string *colour_list[colour_list_len];
+
+static lwc_string **gui_system_colour_pw = NULL;
+
+
+bool gui_system_colour_init(void)
+{
+	unsigned int ccount;
+
+	if (gui_system_colour_pw != NULL) 
+		return false;
+
+	/* Intern colour strings */
+	for (ccount = 0; ccount < colour_list_len; ccount++) {
+		struct nsoption_s *opt;
+		opt = &nsoptions[ccount + NSOPTION_SYS_COLOUR_START];
+		if (lwc_intern_string(opt->key + SLEN("sys_colour_"), 
+				      opt->key_len - SLEN("sys_colour_"), 
+				      &(colour_list[ccount])) != lwc_error_ok) {
+			return false;
+		}
+	}
+
+	gui_system_colour_pw = colour_list;
+	
+	return true;
+}
+
+void gui_system_colour_finalize(void)
+{
+	unsigned int ccount;
+
+	for (ccount = 0; ccount < colour_list_len; ccount++) {
+		lwc_string_unref(colour_list[ccount]);
+	}
+}
+
+colour gui_system_colour_char(const char *name)
+{
+	colour ret = 0xff00000;
+	unsigned int ccount;
+
+	for (ccount = 0; ccount < colour_list_len; ccount++) {
+		if (strcmp(name,
+			   nsoptions[ccount + NSOPTION_SYS_COLOUR_START].key + SLEN("sys_colour_")) == 0) {
+			ret = nsoptions[ccount + NSOPTION_SYS_COLOUR_START].value.c;
+			break;
+		}
+	}
+	return ret;
+}
+
+#define ns_color_to_nscss(c) ((0xff - ((c >> 24) & 0xFF)) | (c & 0xFF00) | ((c >> 16) & 0xFF) | ((c & 0xFF) << 16))
+
+css_error gui_system_colour(void *pw, lwc_string *name, css_color *colour)
+{
+	unsigned int ccount;
+	bool match;
+
+	for (ccount = 0; ccount < colour_list_len; ccount++) {
+		if (lwc_string_caseless_isequal(name, 
+				colour_list[ccount],
+				&match) == lwc_error_ok && match) {
+			*colour = ns_color_to_nscss(nsoptions[ccount + NSOPTION_SYS_COLOUR_START].value.c);
+			return CSS_OK;
+		}
+	}	
+
+	return CSS_INVALID;
+}