Launcher: SVG icon support and icon loading improvements

git-svn-id: http://tint2.googlecode.com/svn/trunk@670 121b4492-b84c-0410-8b4c-0d4edfb3f3cc

src/launcher/icon-theme-common.h

@@ -0,0 +1,45 @@
+/**************************************************************************
+ * Copyright (C) 2015       (mrovi9000@gmail.com)
+ *
+ **************************************************************************/
+
+#ifndef ICON_THEME_COMMON_H
+#define ICON_THEME_COMMON_H
+
+#include <glib.h>
+
+typedef struct IconThemeWrapper {
+	// List of IconTheme*
+	GSList *themes;
+	// List of IconTheme*
+	GSList *themes_fallback;
+} IconThemeWrapper;
+
+typedef struct IconTheme {
+	char *name;
+	GSList *list_inherits; // each item is a char* (theme name)
+	GSList *list_directories; // each item is an IconThemeDir*
+} IconTheme;
+
+// Parses a line of the form "key = value". Modifies the line.
+// Returns 1 if successful, and parts are not empty.
+// Key and value point to the parts.
+int parse_theme_line(char *line, char **key, char **value);
+
+// Returns an IconThemeWrapper* containing the icon theme identified by the name icon_theme_name, all the
+// inherited themes, the hicolor theme and possibly fallback themes.
+IconThemeWrapper *load_themes(const char *icon_theme_name);
+
+void free_themes(IconThemeWrapper *themes);
+
+#define DEFAULT_ICON "application-x-executable"
+
+// Returns the full path to an icon file (or NULL) given the list of icon themes to search and the icon name
+// Note: needs to be released with free().
+char *get_icon_path(IconThemeWrapper *theme, const char *icon_name, int size);
+
+// Returns a list of the directories used to store icons.
+// Do not free the result, it is cached.
+const GSList *get_icon_locations();
+
+#endif