(svn r7337) -Feature: [win32] Add font selection by specifying a font-name, ala Fontconfig. Pretty

messy if you ask me, but this is what you get when MS hides the font API in the deepest
 depths... thanks Rubidium for testing.

fontcache.c

@@ -34,23 +34,104 @@ enum {
 	SHADOW_COLOUR = 2,
 };
 
+#ifdef WIN32
+#include <windows.h>
+#include <tchar.h>
+#include <shlobj.h> // SHGetFolderPath
+#include "win32.h"
 
-/**
- * Loads the freetype font.
- * First type to load the fontname as if it were a path. If that fails,
- * try to resolve the filename of the font using fontconfig, where the
- * format is 'font family name' or 'font family name, font style'.
- */
-static void LoadFreeTypeFont(const char *font_name, FT_Face *face, const char *type)
+#define FONT_DIR_NT "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Fonts"
+#define FONT_DIR_9X "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Fonts"
+static FT_Error GetFontByFaceName(const char *font_name, FT_Face *face)
 {
-	FT_Error error;
+	FT_Error err = FT_Err_Cannot_Open_Resource;
+	HKEY hKey;
+	LONG ret;
+	TCHAR vbuffer[MAX_PATH], dbuffer[256];
+	char *font_path;
+	uint index;
 
-	if (strlen(font_name) == 0) return;
+	/* On windows NT (2000, NT3.5, XP, etc.) the fonts are stored in the
+	 * "Windows NT" key, on Windows 9x in the Windows key. To save us having
+	 * to retrieve the windows version, we'll just query both */
+	ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T(FONT_DIR_NT), 0, KEY_READ, &hKey);
+	if (ret != ERROR_SUCCESS) ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T(FONT_DIR_9X), 0, KEY_READ, &hKey);
 
-	error = FT_New_Face(_library, font_name, 0, face);
+	if (ret != ERROR_SUCCESS) {
+		DEBUG(freetype, 0) ("Cannot open registry key HKLM\\SOFTWARE\\Microsoft\\Windows (NT)\\CurrentVersion\\Fonts");
+		return err;
+	}
+
+	for (index = 0;; index++) {
+		char *s;
+		DWORD vbuflen = lengthof(vbuffer);
+		DWORD dbuflen = lengthof(dbuffer);
+
+		ret = RegEnumValue(hKey, index, vbuffer, &vbuflen, NULL, NULL, dbuffer, &dbuflen);
+		if (ret != ERROR_SUCCESS) break;
+
+		/* The font names in the registry are of the following 3 forms:
+		 * - ADMUI3.fon
+		 * - Book Antiqua Bold (TrueType)
+		 * - Batang & BatangChe & Gungsuh & GungsuhChe (TrueType)
+		 * We will strip the font-type '()' if any and work with the font name
+		 * itself, which must match exactly; if...
+		 * TTC files, font files which contain more than one font are seperated
+		 * byt '&'. Our best bet will be to do substr match for the fontname
+		 * and then let FreeType figure out which index to load */
+		s = _tcschr(vbuffer, '(');
+		if (s != NULL) s[-1] = '\0';
+
+		if (_tcschr(vbuffer, '&') == NULL) {
+			if (_tcsicmp(vbuffer, font_name) == 0) break;
+		} else {
+			if (_tcsstr(vbuffer, font_name) != NULL) break;
+		}
+	}
+
+	if (!SUCCEEDED(SHGetFolderPath(NULL, CSIDL_FONTS, NULL, SHGFP_TYPE_CURRENT, vbuffer))) {
+		DEBUG(freetype, 0) ("SHGetFolderPath cannot return fonts directory");
+		goto folder_error;
+	}
+
+	/* Some fonts are contained in .ttc files, TrueType Collection fonts. These
+	 * contain multiple fonts inside this single file. GetFontData however
+	 * returns the whole file, so we need to check each font inside to get the
+	 * proper font. If not found, we will use the last font in the ttc.
+	 * Also note that FreeType does not support UNICODE filesnames! */
+#if defined(UNICODE)
+	font_path = malloc(MAX_PATH);
+	font_path = convert_from_fs(vbuffer, font_path, MAX_PATH);
+#else
+	font_path = vbuffer;
+#endif
+
+	ttd_strlcat(font_path, "\\", MAX_PATH);
+	ttd_strlcat(font_path, WIDE_TO_MB(dbuffer), MAX_PATH);
+	index = 0;
+	do {
+		err = FT_New_Face(_library, font_path, index, face);
+		if (err != FT_Err_Ok) break;
+
+		if (strncasecmp(font_name, (*face)->family_name, strlen((*face)->family_name)) == 0) break;
+		err = FT_Err_Cannot_Open_Resource;
+
+	} while ((FT_Long)++index != (*face)->num_faces);
+
+#if defined(UNICODE)
+	free(font_path);
+#endif
+
+folder_error:
+	RegCloseKey(hKey);
+	return err;
+}
+#else
 # ifdef WITH_FONTCONFIG
-	/* Failed to load the font, so try it with fontconfig */
-	if (error != FT_Err_Ok) {
+static FT_Error GetFontByFaceName(const char *font_name, FT_Face *face)
+{
+	FT_Error err = FT_Err_Cannot_Open_Resource;
+
 	if (!FcInit()) {
 		ShowInfoF("Unable to load font configuration");
 	} else {
@@ -85,7 +166,7 @@ static void LoadFreeTypeFont(const char *font_name, FT_Face *face, const char *t
 			FcChar8 *file;
 			FcFontSetAdd(fs, match);
 
-				for (i = 0; error != FT_Err_Ok && i < fs->nfont; i++) {
+			for (i = 0; err != FT_Err_Ok && i < fs->nfont; i++) {
 				/* Try the new filename */
 				if (FcPatternGetString(fs->fonts[i], FC_FILE,   0, &file)   == FcResultMatch &&
 						FcPatternGetString(fs->fonts[i], FC_FAMILY, 0, &family) == FcResultMatch &&
@@ -98,7 +179,7 @@ static void LoadFreeTypeFont(const char *font_name, FT_Face *face, const char *t
 					* wrongly a 'random' font, so check whether the family name is the
 					* same as the supplied name */
 					if (strcasecmp(font_family, (char*)family) == 0) {
-							error = FT_New_Face(_library, (char *)file, 0, face);
+						err = FT_New_Face(_library, (char *)file, 0, face);
 					}
 				}
 			}
@@ -109,15 +190,39 @@ static void LoadFreeTypeFont(const char *font_name, FT_Face *face, const char *t
 		FcFontSetDestroy(fs);
 		FcFini();
 	}
+
+	return err;
 }
+# else
+FT_Error GetFontByFaceName(const char *font_name, FT_Face *face) {return FT_Err_Cannot_Open_Resource;}
+# endif /* WITH_FONTCONFIG */
+
 #endif
+
+/**
+ * Loads the freetype font.
+ * First type to load the fontname as if it were a path. If that fails,
+ * try to resolve the filename of the font using fontconfig, where the
+ * format is 'font family name' or 'font family name, font style'.
+ */
+static void LoadFreeTypeFont(const char *font_name, FT_Face *face, const char *type)
+{
+	FT_Error error;
+
+	if (strlen(font_name) == 0) return;
+
+	error = FT_New_Face(_library, font_name, 0, face);
+
+	if (error != FT_Err_Ok) error = GetFontByFaceName(font_name, face);
+
 	if (error == FT_Err_Ok) {
+		DEBUG(freetype, 2) ("Requested font '%s', found '%s %s'", font_name, (*face)->family_name, (*face)->style_name);
+
 		/* Attempt to select the unicode character map */
 		error = FT_Select_Charmap(*face, ft_encoding_unicode);
-		if (error == FT_Err_Ok) {
-			/* Success */
-			return;
-		} else if (error == FT_Err_Invalid_CharMap_Handle) {
+		if (error == FT_Err_Ok) return; // Success
+
+		if (error == FT_Err_Invalid_CharMap_Handle) {
 			/* Try to pick a different character map instead. We default to
 			 * the first map, but platform_id 0 encoding_id 0 should also
 			 * be unicode (strange system...) */

win32.h

@@ -23,4 +23,8 @@ wchar_t *convert_to_fs(const char *name, wchar_t *utf16_buf, size_t buflen);
 # define WIDE_TO_MB_BUFFER(str, buffer, buflen) (str)
 #endif
 
+#if defined(__MINGW32__)
+#define SHGFP_TYPE_CURRENT 0
+#endif /* __MINGW32__ */
+
 #endif /* WIN32_H */