(svn r25436) -Codechange: split the font detection code out of the font caching code

src/fontdetection.h

@@ -0,0 +1,43 @@
+/* $Id$ */
+
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD 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.
+ * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file fontdetection.h Functions related to detecting/finding the right font. */
+
+#ifndef FONTDETECTION_H
+#define FONTDETECTION_H
+
+#ifdef WITH_FREETYPE
+
+#include "fontcache.h"
+#include <ft2build.h>
+#include FT_FREETYPE_H
+
+/**
+ * Load a freetype font face with the given font name.
+ * @param font_name The name of the font to load.
+ * @param face The face that has been found.
+ * @return The error we encountered.
+ */
+FT_Error GetFontByFaceName(const char *font_name, FT_Face *face);
+
+/**
+ * We would like to have a fallback font as the current one
+ * doesn't contain all characters we need.
+ * This function must set all fonts of settings.
+ * @param settings the settings to overwrite the fontname of.
+ * @param language_isocode the language, e.g. en_GB.
+ * @param winlangid the language ID windows style.
+ * @param callback The function to call to check for missing glyphs.
+ * @return true if a font has been set, false otherwise.
+ */
+bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, class MissingGlyphSearcher *callback);
+
+#endif /* WITH_FREETYPE */
+
+#endif