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Location: cpp/openttd-patchpack/source/src/fontcache.cpp - annotation
r17464:ec056ba9e669
38.6 KiB
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(svn r22229) -Update from WebTranslator v3.0:
brazilian_portuguese - 3 changes by Tucalipe
slovak - 44 changes by micropro_cz
brazilian_portuguese - 3 changes by Tucalipe
slovak - 44 changes by micropro_cz
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/*
* 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 fontcache.cpp Cache for characters from fonts. */
#include "stdafx.h"
#include "fontcache.h"
#include "blitter/factory.hpp"
#include "core/math_func.hpp"
#include "table/sprites.h"
#include "table/control_codes.h"
static const int ASCII_LETTERSTART = 32; ///< First printable ASCII letter.
/** Semi-constant for the height of the different sizes of fonts. */
int _font_height[FS_END];
#ifdef WITH_FREETYPE
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
#ifdef WITH_FONTCONFIG
#include <fontconfig/fontconfig.h>
#endif
static FT_Library _library = NULL;
static FT_Face _face_small = NULL;
static FT_Face _face_medium = NULL;
static FT_Face _face_large = NULL;
static int _ascender[FS_END];
FreeTypeSettings _freetype;
static const byte FACE_COLOUR = 1;
static const byte SHADOW_COLOUR = 2;
/**
* Get the font loaded into a Freetype face by using a font-name.
* If no appropiate font is found, the function returns an error
*/
/* ========================================================================================
* Windows support
* ======================================================================================== */
#ifdef WIN32
#include <windows.h>
#include <shlobj.h> /* SHGetFolderPath */
#include "os/windows/win32.h"
/**
* Get the short DOS 8.3 format for paths.
* FreeType doesn't support Unicode filenames and Windows' fopen (as used
* by FreeType) doesn't support UTF-8 filenames. So we have to convert the
* filename into something that isn't UTF-8 but represents the Unicode file
* name. This is the short DOS 8.3 format. This does not contain any
* characters that fopen doesn't support.
* @param long_path the path in UTF-8.
* @return the short path in ANSI (ASCII).
*/
char *GetShortPath(const char *long_path)
{
static char short_path[MAX_PATH];
#ifdef UNICODE
/* The non-unicode GetShortPath doesn't support UTF-8...,
* so convert the path to wide chars, then get the short
* path and convert it back again. */
wchar_t long_path_w[MAX_PATH];
MultiByteToWideChar(CP_UTF8, 0, long_path, -1, long_path_w, MAX_PATH);
wchar_t short_path_w[MAX_PATH];
GetShortPathNameW(long_path_w, short_path_w, MAX_PATH);
WideCharToMultiByte(CP_ACP, 0, short_path_w, -1, short_path, MAX_PATH, NULL, NULL);
#else
/* Technically not needed, but do it for consistency. */
GetShortPathNameA(long_path, short_path, MAX_PATH);
#endif
return short_path;
}
/* Get the font file to be loaded into Freetype by looping the registry
* location where windows lists all installed fonts. Not very nice, will
* surely break if the registry path changes, but it works. Much better
* solution would be to use CreateFont, and extract the font data from it
* by GetFontData. The problem with this is that the font file needs to be
* kept in memory then until the font is no longer needed. This could mean
* an additional memory usage of 30MB (just for fonts!) when using an eastern
* font for all font sizes */
#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 err = FT_Err_Cannot_Open_Resource;
HKEY hKey;
LONG ret;
TCHAR vbuffer[MAX_PATH], dbuffer[256];
TCHAR *font_namep;
char *font_path;
uint index;
/* 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);
if (ret != ERROR_SUCCESS) {
DEBUG(freetype, 0, "Cannot open registry key HKLM\\SOFTWARE\\Microsoft\\Windows (NT)\\CurrentVersion\\Fonts");
return err;
}
/* For Unicode we need some conversion between widechar and
* normal char to match the data returned by RegEnumValue,
* otherwise just use parameter */
#if defined(UNICODE)
font_namep = MallocT<TCHAR>(MAX_PATH);
MB_TO_WIDE_BUFFER(font_name, font_namep, MAX_PATH * sizeof(TCHAR));
#else
font_namep = const_cast<char *>(font_name); // only cast because in unicode pointer is not const
#endif
for (index = 0;; index++) {
TCHAR *s;
DWORD vbuflen = lengthof(vbuffer);
DWORD dbuflen = lengthof(dbuffer);
ret = RegEnumValue(hKey, index, vbuffer, &vbuflen, NULL, NULL, (byte*)dbuffer, &dbuflen);
if (ret != ERROR_SUCCESS) goto registry_no_font_found;
/* 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, _T('('));
if (s != NULL) s[-1] = '\0';
if (_tcschr(vbuffer, _T('&')) == NULL) {
if (_tcsicmp(vbuffer, font_namep) == 0) break;
} else {
if (_tcsstr(vbuffer, font_namep) != 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.
* Also note that FreeType does not support UNICODE filesnames! */
#if defined(UNICODE)
/* We need a cast here back from wide because FreeType doesn't support
* widechar filenames. Just use the buffer we allocated before for the
* font_name search */
font_path = (char*)font_namep;
WIDE_TO_MB_BUFFER(vbuffer, font_path, MAX_PATH * sizeof(TCHAR));
#else
font_path = vbuffer;
#endif
ttd_strlcat(font_path, "\\", MAX_PATH * sizeof(TCHAR));
ttd_strlcat(font_path, WIDE_TO_MB(dbuffer), MAX_PATH * sizeof(TCHAR));
/* Convert the path into something that FreeType understands */
font_path = GetShortPath(font_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;
/* Try english name if font name failed */
if (strncasecmp(font_name + strlen(font_name) + 1, (*face)->family_name, strlen((*face)->family_name)) == 0) break;
err = FT_Err_Cannot_Open_Resource;
} while ((FT_Long)++index != (*face)->num_faces);
folder_error:
registry_no_font_found:
#if defined(UNICODE)
free(font_namep);
#endif
RegCloseKey(hKey);
return err;
}
/**
* Fonts can have localised names and when the system locale is the same as
* one of those localised names Windows will always return that localised name
* instead of allowing to get the non-localised (English US) name of the font.
* This will later on give problems as freetype uses the non-localised name of
* the font and we need to compare based on that name.
* Windows furthermore DOES NOT have an API to get the non-localised name nor
* can we override the system locale. This means that we have to actually read
* the font itself to gather the font name we want.
* Based on: http://blogs.msdn.com/michkap/archive/2006/02/13/530814.aspx
* @param logfont the font information to get the english name of.
* @return the English name (if it could be found).
*/
static const char *GetEnglishFontName(const ENUMLOGFONTEX *logfont)
{
static char font_name[MAX_PATH];
const char *ret_font_name = NULL;
uint pos = 0;
HDC dc;
HGDIOBJ oldfont;
byte *buf;
DWORD dw;
uint16 format, count, stringOffset, platformId, encodingId, languageId, nameId, length, offset;
HFONT font = CreateFontIndirect(&logfont->elfLogFont);
if (font == NULL) goto err1;
dc = GetDC(NULL);
oldfont = SelectObject(dc, font);
dw = GetFontData(dc, 'eman', 0, NULL, 0);
if (dw == GDI_ERROR) goto err2;
buf = MallocT<byte>(dw);
dw = GetFontData(dc, 'eman', 0, buf, dw);
if (dw == GDI_ERROR) goto err3;
format = buf[pos++] << 8;
format += buf[pos++];
assert(format == 0);
count = buf[pos++] << 8;
count += buf[pos++];
stringOffset = buf[pos++] << 8;
stringOffset += buf[pos++];
for (uint i = 0; i < count; i++) {
platformId = buf[pos++] << 8;
platformId += buf[pos++];
encodingId = buf[pos++] << 8;
encodingId += buf[pos++];
languageId = buf[pos++] << 8;
languageId += buf[pos++];
nameId = buf[pos++] << 8;
nameId += buf[pos++];
if (nameId != 1) {
pos += 4; // skip length and offset
continue;
}
length = buf[pos++] << 8;
length += buf[pos++];
offset = buf[pos++] << 8;
offset += buf[pos++];
/* Don't buffer overflow */
length = min(length, MAX_PATH - 1);
for (uint j = 0; j < length; j++) font_name[j] = buf[stringOffset + offset + j];
font_name[length] = '\0';
if ((platformId == 1 && languageId == 0) || // Macintosh English
(platformId == 3 && languageId == 0x0409)) { // Microsoft English (US)
ret_font_name = font_name;
break;
}
}
err3:
free(buf);
err2:
SelectObject(dc, oldfont);
ReleaseDC(NULL, dc);
DeleteObject(font);
err1:
return ret_font_name == NULL ? WIDE_TO_MB((const TCHAR*)logfont->elfFullName) : ret_font_name;
}
struct EFCParam {
FreeTypeSettings *settings;
LOCALESIGNATURE locale;
SetFallbackFontCallback *callback;
};
static int CALLBACK EnumFontCallback(const ENUMLOGFONTEX *logfont, const NEWTEXTMETRICEX *metric, DWORD type, LPARAM lParam)
{
EFCParam *info = (EFCParam *)lParam;
/* Only use TrueType fonts */
if (!(type & TRUETYPE_FONTTYPE)) return 1;
/* Don't use SYMBOL fonts */
if (logfont->elfLogFont.lfCharSet == SYMBOL_CHARSET) return 1;
/* The font has to have at least one of the supported locales to be usable. */
if ((metric->ntmFontSig.fsCsb[0] & info->locale.lsCsbSupported[0]) == 0 && (metric->ntmFontSig.fsCsb[1] & info->locale.lsCsbSupported[1]) == 0) {
/* On win9x metric->ntmFontSig seems to contain garbage. */
FONTSIGNATURE fs;
memset(&fs, 0, sizeof(fs));
HFONT font = CreateFontIndirect(&logfont->elfLogFont);
if (font != NULL) {
HDC dc = GetDC(NULL);
HGDIOBJ oldfont = SelectObject(dc, font);
GetTextCharsetInfo(dc, &fs, 0);
SelectObject(dc, oldfont);
ReleaseDC(NULL, dc);
DeleteObject(font);
}
if ((fs.fsCsb[0] & info->locale.lsCsbSupported[0]) == 0 && (fs.fsCsb[1] & info->locale.lsCsbSupported[1]) == 0) return 1;
}
char font_name[MAX_PATH];
#if defined(UNICODE)
WIDE_TO_MB_BUFFER((const TCHAR*)logfont->elfFullName, font_name, lengthof(font_name));
#else
strecpy(font_name, (const TCHAR*)logfont->elfFullName, lastof(font_name));
#endif
/* Add english name after font name */
const char *english_name = GetEnglishFontName(logfont);
strecpy(font_name + strlen(font_name) + 1, english_name, lastof(font_name));
/* Check whether we can actually load the font. */
bool ft_init = _library != NULL;
bool found = false;
FT_Face face;
/* Init FreeType if needed. */
if ((ft_init || FT_Init_FreeType(&_library) == FT_Err_Ok) && GetFontByFaceName(font_name, &face) == FT_Err_Ok) {
FT_Done_Face(face);
found = true;
}
if (!ft_init) {
/* Uninit FreeType if we did the init. */
FT_Done_FreeType(_library);
_library = NULL;
}
if (!found) return 1;
strecpy(info->settings->small_font, font_name, lastof(info->settings->small_font));
strecpy(info->settings->medium_font, font_name, lastof(info->settings->medium_font));
strecpy(info->settings->large_font, font_name, lastof(info->settings->large_font));
if (info->callback(NULL)) return 1;
DEBUG(freetype, 1, "Fallback font: %s (%s)", font_name, english_name);
return 0; // stop enumerating
}
bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, SetFallbackFontCallback *callback)
{
DEBUG(freetype, 1, "Trying fallback fonts");
EFCParam langInfo;
if (GetLocaleInfo(MAKELCID(winlangid, SORT_DEFAULT), LOCALE_FONTSIGNATURE, (LPTSTR)&langInfo.locale, sizeof(langInfo.locale) / sizeof(TCHAR)) == 0) {
/* Invalid langid or some other mysterious error, can't determine fallback font. */
DEBUG(freetype, 1, "Can't get locale info for fallback font (langid=0x%x)", winlangid);
return false;
}
langInfo.settings = settings;
langInfo.callback = callback;
LOGFONT font;
/* Enumerate all fonts. */
font.lfCharSet = DEFAULT_CHARSET;
font.lfFaceName[0] = '\0';
font.lfPitchAndFamily = 0;
HDC dc = GetDC(NULL);
int ret = EnumFontFamiliesEx(dc, &font, (FONTENUMPROC)&EnumFontCallback, (LPARAM)&langInfo, 0);
ReleaseDC(NULL, dc);
return ret == 0;
}
#elif defined(__APPLE__) /* end ifdef Win32 */
/* ========================================================================================
* OSX support
* ======================================================================================== */
#include "os/macosx/macos.h"
#include <ApplicationServices/ApplicationServices.h>
FT_Error GetFontByFaceName(const char *font_name, FT_Face *face)
{
FT_Error err = FT_Err_Cannot_Open_Resource;
/* Get font reference from name. */
CFStringRef name = CFStringCreateWithCString(kCFAllocatorDefault, font_name, kCFStringEncodingUTF8);
ATSFontRef font = ATSFontFindFromName(name, kATSOptionFlagsDefault);
CFRelease(name);
if (font == kInvalidFont) return err;
/* Get a file system reference for the font. */
FSRef ref;
OSStatus os_err = -1;
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
if (MacOSVersionIsAtLeast(10, 5, 0)) {
os_err = ATSFontGetFileReference(font, &ref);
} else
#endif
{
#if (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5) && !__LP64__
/* This type was introduced with the 10.5 SDK. */
#if (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5)
#define ATSFSSpec FSSpec
#endif
FSSpec spec;
os_err = ATSFontGetFileSpecification(font, (ATSFSSpec *)&spec);
if (os_err == noErr) os_err = FSpMakeFSRef(&spec, &ref);
#endif
}
if (os_err == noErr) {
/* Get unix path for file. */
UInt8 file_path[PATH_MAX];
if (FSRefMakePath(&ref, file_path, sizeof(file_path)) == noErr) {
DEBUG(freetype, 3, "Font path for %s: %s", font_name, file_path);
err = FT_New_Face(_library, (const char *)file_path, 0, face);
}
}
return err;
}
bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, SetFallbackFontCallback *callback)
{
const char *str;
bool result = false;
callback(&str);
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
if (MacOSVersionIsAtLeast(10, 5, 0)) {
/* Determine fallback font using CoreText. This uses the language isocode
* to find a suitable font. CoreText is available from 10.5 onwards. */
char lang[16];
if (strcmp(language_isocode, "zh_TW") == 0) {
/* Traditional Chinese */
strecpy(lang, "zh-Hant", lastof(lang));
} else if (strcmp(language_isocode, "zh_CN") == 0) {
/* Simplified Chinese */
strecpy(lang, "zh-Hans", lastof(lang));
} else if (strncmp(language_isocode, "ur", 2) == 0) {
/* The urdu alphabet is variant of persian. As OS X has no default
* font that advertises an urdu language code, search for persian
* support instead. */
strecpy(lang, "fa", lastof(lang));
} else {
/* Just copy the first part of the isocode. */
strecpy(lang, language_isocode, lastof(lang));
char *sep = strchr(lang, '_');
if (sep != NULL) *sep = '\0';
}
CFStringRef lang_code;
lang_code = CFStringCreateWithCString(kCFAllocatorDefault, lang, kCFStringEncodingUTF8);
/* Create a font iterator and iterate over all fonts that
* are available to the application. */
ATSFontIterator itr;
ATSFontRef font;
ATSFontIteratorCreate(kATSFontContextLocal, NULL, NULL, kATSOptionFlagsUnRestrictedScope, &itr);
while (!result && ATSFontIteratorNext(itr, &font) == noErr) {
/* Get CoreText font handle. */
CTFontRef font_ref = CTFontCreateWithPlatformFont(font, 0.0, NULL, NULL);
CFArrayRef langs = CTFontCopySupportedLanguages(font_ref);
if (langs != NULL) {
/* Font has a list of supported languages. */
for (CFIndex i = 0; i < CFArrayGetCount(langs); i++) {
CFStringRef lang = (CFStringRef)CFArrayGetValueAtIndex(langs, i);
if (CFStringCompare(lang, lang_code, kCFCompareAnchored) == kCFCompareEqualTo) {
/* Lang code is supported by font, get full font name. */
CFStringRef font_name = CTFontCopyFullName(font_ref);
char name[128];
CFStringGetCString(font_name, name, lengthof(name), kCFStringEncodingUTF8);
CFRelease(font_name);
/* Skip some inappropriate or ugly looking fonts that have better alternatives. */
if (strncmp(name, "Courier", 7) == 0 || strncmp(name, "Apple Symbols", 13) == 0 ||
strncmp(name, ".Aqua", 5) == 0 || strncmp(name, "LastResort", 10) == 0 ||
strncmp(name, "GB18030 Bitmap", 14) == 0) continue;
/* Save result. */
strecpy(settings->small_font, name, lastof(settings->small_font));
strecpy(settings->medium_font, name, lastof(settings->medium_font));
strecpy(settings->large_font, name, lastof(settings->large_font));
DEBUG(freetype, 2, "CT-Font for %s: %s", language_isocode, name);
result = true;
break;
}
}
CFRelease(langs);
}
CFRelease(font_ref);
}
ATSFontIteratorRelease(&itr);
CFRelease(lang_code);
} else
#endif
{
#if (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5) && !__LP64__
/* Determine fallback font using ATSUI. This uses a string sample with
* missing characters. This is not failure-proof, but a better way like
* using the isocode as in the CoreText code path is not available.
* ATSUI was deprecated with 10.6 and is only partially available in
* 64-bit mode. */
/* Remove all control characters in the range from SCC_CONTROL_START to
* SCC_CONTROL_END as well as all ASCII < 0x20 from the string as it will
* mess with the automatic font detection */
char buff[256]; // This length is enough to find a suitable replacement font
strecpy(buff, str, lastof(buff));
str_validate(buff, lastof(buff), true, false);
/* Extract a UniChar represenation of the sample string. */
CFStringRef cf_str = CFStringCreateWithCString(kCFAllocatorDefault, buff, kCFStringEncodingUTF8);
if (cf_str == NULL) {
/* Something went wrong. Corrupt/invalid sample string? */
return false;
}
CFIndex str_len = CFStringGetLength(cf_str);
UniChar string[str_len];
CFStringGetCharacters(cf_str, CFRangeMake(0, str_len), string);
/* Create a default text style with the default font. */
ATSUStyle style;
ATSUCreateStyle(&style);
/* Create a text layout object from the sample string using the text style. */
UniCharCount run_len = kATSUToTextEnd;
ATSUTextLayout text_layout;
ATSUCreateTextLayoutWithTextPtr(string, kATSUFromTextBeginning, kATSUToTextEnd, str_len, 1, &run_len, &style, &text_layout);
/* Try to match a font for the sample text. ATSUMatchFontsToText stops after
* it finds the first continous character run not renderable with the currently
* selected font starting at offset. The matching needs to be repeated until
* the end of the string is reached to make sure the fallback font matches for
* all characters in the string and not only the first run. */
UniCharArrayOffset offset = kATSUFromTextBeginning;
OSStatus os_err;
do {
ATSUFontID font;
UniCharCount run_len;
os_err = ATSUMatchFontsToText(text_layout, offset, kATSUToTextEnd, &font, &offset, &run_len);
if (os_err == kATSUFontsMatched) {
/* Found a better fallback font. Update the text layout
* object with the new font. */
ATSUAttributeTag tag = kATSUFontTag;
ByteCount size = sizeof(font);
ATSUAttributeValuePtr val = &font;
ATSUSetAttributes(style, 1, &tag, &size, &val);
offset += run_len;
}
/* Exit if the end of the string is reached or some other error occurred. */
} while (os_err == kATSUFontsMatched && offset < (UniCharArrayOffset)str_len);
if (os_err == noErr || os_err == kATSUFontsMatched) {
/* ATSUMatchFontsToText exited normally. Extract font
* out of the text layout object. */
ATSUFontID font;
ByteCount act_len;
ATSUGetAttribute(style, kATSUFontTag, sizeof(font), &font, &act_len);
/* Get unique font name. The result is not a c-string, we have
* to leave space for a \0 and terminate it ourselves. */
char name[128];
ATSUFindFontName(font, kFontUniqueName, kFontNoPlatformCode, kFontNoScriptCode, kFontNoLanguageCode, 127, name, &act_len, NULL);
name[act_len > 127 ? 127 : act_len] = '\0';
/* Save Result. */
strecpy(settings->small_font, name, lastof(settings->small_font));
strecpy(settings->medium_font, name, lastof(settings->medium_font));
strecpy(settings->large_font, name, lastof(settings->large_font));
DEBUG(freetype, 2, "ATSUI-Font for %s: %s", language_isocode, name);
result = true;
}
ATSUDisposeTextLayout(text_layout);
ATSUDisposeStyle(style);
CFRelease(cf_str);
#endif
}
if (result && strncmp(settings->medium_font, "Geeza Pro", 9) == 0) {
/* The font 'Geeza Pro' is often found for arabic characters, but
* it has the 'tiny' problem of not having any latin characters.
* 'Arial Unicode MS' on the other hand has arabic and latin glyphs,
* but seems to 'forget' to inform the OS about this fact. Manually
* substitute the latter for the former if it is loadable. */
bool ft_init = _library != NULL;
FT_Face face;
/* Init FreeType if needed. */
if ((ft_init || FT_Init_FreeType(&_library) == FT_Err_Ok) && GetFontByFaceName("Arial Unicode MS", &face) == FT_Err_Ok) {
FT_Done_Face(face);
strecpy(settings->small_font, "Arial Unicode MS", lastof(settings->small_font));
strecpy(settings->medium_font, "Arial Unicode MS", lastof(settings->medium_font));
strecpy(settings->large_font, "Arial Unicode MS", lastof(settings->large_font));
DEBUG(freetype, 1, "Replacing font 'Geeza Pro' with 'Arial Unicode MS'");
}
if (!ft_init) {
/* Uninit FreeType if we did the init. */
FT_Done_FreeType(_library);
_library = NULL;
}
}
callback(NULL);
return result;
}
#elif defined(WITH_FONTCONFIG) /* end ifdef __APPLE__ */
/* ========================================================================================
* FontConfig (unix) support
* ======================================================================================== */
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 {
FcPattern *match;
FcPattern *pat;
FcFontSet *fs;
FcResult result;
char *font_style;
char *font_family;
/* Split & strip the font's style */
font_family = strdup(font_name);
font_style = strchr(font_family, ',');
if (font_style != NULL) {
font_style[0] = '\0';
font_style++;
while (*font_style == ' ' || *font_style == '\t') font_style++;
}
/* Resolve the name and populate the information structure */
pat = FcNameParse((FcChar8*)font_family);
if (font_style != NULL) FcPatternAddString(pat, FC_STYLE, (FcChar8*)font_style);
FcConfigSubstitute(0, pat, FcMatchPattern);
FcDefaultSubstitute(pat);
fs = FcFontSetCreate();
match = FcFontMatch(0, pat, &result);
if (fs != NULL && match != NULL) {
int i;
FcChar8 *family;
FcChar8 *style;
FcChar8 *file;
FcFontSetAdd(fs, match);
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 &&
FcPatternGetString(fs->fonts[i], FC_STYLE, 0, &style) == FcResultMatch) {
/* The correct style? */
if (font_style != NULL && strcasecmp(font_style, (char*)style) != 0) continue;
/* Font config takes the best shot, which, if the family name is spelled
* wrongly a 'random' font, so check whether the family name is the
* same as the supplied name */
if (strcasecmp(font_family, (char*)family) == 0) {
err = FT_New_Face(_library, (char *)file, 0, face);
}
}
}
}
free(font_family);
FcPatternDestroy(pat);
FcFontSetDestroy(fs);
FcFini();
}
return err;
}
bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, SetFallbackFontCallback *callback)
{
if (!FcInit()) return false;
bool ret = false;
/* Fontconfig doesn't handle full language isocodes, only the part
* before the _ of e.g. en_GB is used, so "remove" everything after
* the _. */
char lang[16];
seprintf(lang, lastof(lang), ":lang=%s", language_isocode);
char *split = strchr(lang, '_');
if (split != NULL) *split = '\0';
/* First create a pattern to match the wanted language. */
FcPattern *pat = FcNameParse((FcChar8*)lang);
/* We only want to know the filename. */
FcObjectSet *os = FcObjectSetBuild(FC_FILE, NULL);
/* Get the list of filenames matching the wanted language. */
FcFontSet *fs = FcFontList(NULL, pat, os);
/* We don't need these anymore. */
FcObjectSetDestroy(os);
FcPatternDestroy(pat);
if (fs != NULL) {
for (int i = 0; i < fs->nfont; i++) {
FcPattern *font = fs->fonts[i];
FcChar8 *file = NULL;
FcResult res = FcPatternGetString(font, FC_FILE, 0, &file);
if (res != FcResultMatch || file == NULL) {
continue;
}
strecpy(settings->small_font, (const char*)file, lastof(settings->small_font));
strecpy(settings->medium_font, (const char*)file, lastof(settings->medium_font));
strecpy(settings->large_font, (const char*)file, lastof(settings->large_font));
bool missing = callback(NULL);
DEBUG(freetype, 1, "Font \"%s\" misses%s glyphs", file, missing ? "" : " no");
if (!missing) {
ret = true;
break;
}
}
/* Clean up the list of filenames. */
FcFontSetDestroy(fs);
}
FcFini();
return ret;
}
#else /* without WITH_FONTCONFIG */
FT_Error GetFontByFaceName(const char *font_name, FT_Face *face) {return FT_Err_Cannot_Open_Resource;}
bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, int winlangid, SetFallbackFontCallback *callback) { return false; }
#endif /* WITH_FONTCONFIG */
static void SetFontGeometry(FT_Face face, FontSize size, int pixels)
{
FT_Set_Pixel_Sizes(face, 0, pixels);
if (FT_IS_SCALABLE(face)) {
int asc = face->ascender * pixels / face->units_per_EM;
int dec = face->descender * pixels / face->units_per_EM;
_ascender[size] = asc;
_font_height[size] = asc - dec;
} else {
_ascender[size] = pixels;
_font_height[size] = pixels;
}
}
/**
* 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 (StrEmpty(font_name)) 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 '%s', using '%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) 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...) */
FT_CharMap found = (*face)->charmaps[0];
int i;
for (i = 0; i < (*face)->num_charmaps; i++) {
FT_CharMap charmap = (*face)->charmaps[i];
if (charmap->platform_id == 0 && charmap->encoding_id == 0) {
found = charmap;
}
}
if (found != NULL) {
error = FT_Set_Charmap(*face, found);
if (error == FT_Err_Ok) return;
}
}
}
FT_Done_Face(*face);
*face = NULL;
ShowInfoF("Unable to use '%s' for %s font, FreeType reported error 0x%X, using sprite font instead", font_name, type, error);
}
void InitFreeType()
{
ResetFontSizes();
if (StrEmpty(_freetype.small_font) && StrEmpty(_freetype.medium_font) && StrEmpty(_freetype.large_font)) {
DEBUG(freetype, 1, "No font faces specified, using sprite fonts instead");
return;
}
if (FT_Init_FreeType(&_library) != FT_Err_Ok) {
ShowInfoF("Unable to initialize FreeType, using sprite fonts instead");
return;
}
DEBUG(freetype, 2, "Initialized");
/* Load each font */
LoadFreeTypeFont(_freetype.small_font, &_face_small, "small");
LoadFreeTypeFont(_freetype.medium_font, &_face_medium, "medium");
LoadFreeTypeFont(_freetype.large_font, &_face_large, "large");
/* Set each font size */
if (_face_small != NULL) {
SetFontGeometry(_face_small, FS_SMALL, _freetype.small_size);
}
if (_face_medium != NULL) {
SetFontGeometry(_face_medium, FS_NORMAL, _freetype.medium_size);
}
if (_face_large != NULL) {
SetFontGeometry(_face_large, FS_LARGE, _freetype.large_size);
}
}
static void ResetGlyphCache();
/**
* Unload a face and set it to NULL.
* @param face the face to unload
*/
static void UnloadFace(FT_Face *face)
{
if (*face == NULL) return;
FT_Done_Face(*face);
*face = NULL;
}
/**
* Free everything allocated w.r.t. fonts.
*/
void UninitFreeType()
{
ResetFontSizes();
ResetGlyphCache();
UnloadFace(&_face_small);
UnloadFace(&_face_medium);
UnloadFace(&_face_large);
FT_Done_FreeType(_library);
_library = NULL;
}
static FT_Face GetFontFace(FontSize size)
{
switch (size) {
default: NOT_REACHED();
case FS_NORMAL: return _face_medium;
case FS_SMALL: return _face_small;
case FS_LARGE: return _face_large;
}
}
struct GlyphEntry {
Sprite *sprite;
byte width;
bool duplicate;
};
/* The glyph cache. This is structured to reduce memory consumption.
* 1) There is a 'segment' table for each font size.
* 2) Each segment table is a discrete block of characters.
* 3) Each block contains 256 (aligned) characters sequential characters.
*
* The cache is accessed in the following way:
* For character 0x0041 ('A'): _glyph_ptr[FS_NORMAL][0x00][0x41]
* For character 0x20AC (Euro): _glyph_ptr[FS_NORMAL][0x20][0xAC]
*
* Currently only 256 segments are allocated, "limiting" us to 65536 characters.
* This can be simply changed in the two functions Get & SetGlyphPtr.
*/
static GlyphEntry **_glyph_ptr[FS_END];
/** Clear the complete cache */
static void ResetGlyphCache()
{
for (FontSize i = FS_BEGIN; i < FS_END; i++) {
if (_glyph_ptr[i] == NULL) continue;
for (int j = 0; j < 256; j++) {
if (_glyph_ptr[i][j] == NULL) continue;
for (int k = 0; k < 256; k++) {
if (_glyph_ptr[i][j][k].duplicate) continue;
free(_glyph_ptr[i][j][k].sprite);
}
free(_glyph_ptr[i][j]);
}
free(_glyph_ptr[i]);
_glyph_ptr[i] = NULL;
}
}
static GlyphEntry *GetGlyphPtr(FontSize size, WChar key)
{
if (_glyph_ptr[size] == NULL) return NULL;
if (_glyph_ptr[size][GB(key, 8, 8)] == NULL) return NULL;
return &_glyph_ptr[size][GB(key, 8, 8)][GB(key, 0, 8)];
}
static void SetGlyphPtr(FontSize size, WChar key, const GlyphEntry *glyph, bool duplicate = false)
{
if (_glyph_ptr[size] == NULL) {
DEBUG(freetype, 3, "Allocating root glyph cache for size %u", size);
_glyph_ptr[size] = CallocT<GlyphEntry*>(256);
}
if (_glyph_ptr[size][GB(key, 8, 8)] == NULL) {
DEBUG(freetype, 3, "Allocating glyph cache for range 0x%02X00, size %u", GB(key, 8, 8), size);
_glyph_ptr[size][GB(key, 8, 8)] = CallocT<GlyphEntry>(256);
}
DEBUG(freetype, 4, "Set glyph for unicode character 0x%04X, size %u", key, size);
_glyph_ptr[size][GB(key, 8, 8)][GB(key, 0, 8)].sprite = glyph->sprite;
_glyph_ptr[size][GB(key, 8, 8)][GB(key, 0, 8)].width = glyph->width;
_glyph_ptr[size][GB(key, 8, 8)][GB(key, 0, 8)].duplicate = duplicate;
}
static void *AllocateFont(size_t size)
{
return MallocT<byte>(size);
}
/* Check if a glyph should be rendered with antialiasing */
static bool GetFontAAState(FontSize size)
{
/* AA is only supported for 32 bpp */
if (BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth() != 32) return false;
switch (size) {
default: NOT_REACHED();
case FS_NORMAL: return _freetype.medium_aa;
case FS_SMALL: return _freetype.small_aa;
case FS_LARGE: return _freetype.large_aa;
}
}
const Sprite *GetGlyph(FontSize size, WChar key)
{
FT_Face face = GetFontFace(size);
FT_GlyphSlot slot;
GlyphEntry new_glyph;
GlyphEntry *glyph;
SpriteLoader::Sprite sprite;
int width;
int height;
int x;
int y;
assert(IsPrintable(key));
/* Bail out if no face loaded, or for our special characters */
if (face == NULL || (key >= SCC_SPRITE_START && key <= SCC_SPRITE_END)) {
SpriteID sprite = GetUnicodeGlyph(size, key);
if (sprite == 0) sprite = GetUnicodeGlyph(size, '?');
return GetSprite(sprite, ST_FONT);
}
/* Check for the glyph in our cache */
glyph = GetGlyphPtr(size, key);
if (glyph != NULL && glyph->sprite != NULL) return glyph->sprite;
slot = face->glyph;
bool aa = GetFontAAState(size);
FT_UInt glyph_index = FT_Get_Char_Index(face, key);
if (glyph_index == 0) {
if (key == '?') {
/* The font misses the '?' character. Use sprite font. */
SpriteID sprite = GetUnicodeGlyph(size, key);
Sprite *spr = (Sprite*)GetRawSprite(sprite, ST_FONT, AllocateFont);
assert(spr != NULL);
new_glyph.sprite = spr;
new_glyph.width = spr->width + (size != FS_NORMAL);
SetGlyphPtr(size, key, &new_glyph, false);
return new_glyph.sprite;
} else {
/* Use '?' for missing characters. */
GetGlyph(size, '?');
glyph = GetGlyphPtr(size, '?');
SetGlyphPtr(size, key, glyph, true);
return glyph->sprite;
}
}
FT_Load_Glyph(face, glyph_index, FT_LOAD_DEFAULT);
FT_Render_Glyph(face->glyph, aa ? FT_RENDER_MODE_NORMAL : FT_RENDER_MODE_MONO);
/* Despite requesting a normal glyph, FreeType may have returned a bitmap */
aa = (slot->bitmap.pixel_mode == FT_PIXEL_MODE_GRAY);
/* Add 1 pixel for the shadow on the medium font. Our sprite must be at least 1x1 pixel */
width = max(1, slot->bitmap.width + (size == FS_NORMAL));
height = max(1, slot->bitmap.rows + (size == FS_NORMAL));
/* FreeType has rendered the glyph, now we allocate a sprite and copy the image into it */
sprite.AllocateData(width * height);
sprite.width = width;
sprite.height = height;
sprite.x_offs = slot->bitmap_left;
sprite.y_offs = _ascender[size] - slot->bitmap_top;
/* Draw shadow for medium size */
if (size == FS_NORMAL) {
for (y = 0; y < slot->bitmap.rows; y++) {
for (x = 0; x < slot->bitmap.width; x++) {
if (aa ? (slot->bitmap.buffer[x + y * slot->bitmap.pitch] > 0) : HasBit(slot->bitmap.buffer[(x / 8) + y * slot->bitmap.pitch], 7 - (x % 8))) {
sprite.data[1 + x + (1 + y) * sprite.width].m = SHADOW_COLOUR;
sprite.data[1 + x + (1 + y) * sprite.width].a = aa ? slot->bitmap.buffer[x + y * slot->bitmap.pitch] : 0xFF;
}
}
}
}
for (y = 0; y < slot->bitmap.rows; y++) {
for (x = 0; x < slot->bitmap.width; x++) {
if (aa ? (slot->bitmap.buffer[x + y * slot->bitmap.pitch] > 0) : HasBit(slot->bitmap.buffer[(x / 8) + y * slot->bitmap.pitch], 7 - (x % 8))) {
sprite.data[x + y * sprite.width].m = FACE_COLOUR;
sprite.data[x + y * sprite.width].a = aa ? slot->bitmap.buffer[x + y * slot->bitmap.pitch] : 0xFF;
}
}
}
new_glyph.sprite = BlitterFactoryBase::GetCurrentBlitter()->Encode(&sprite, AllocateFont);
new_glyph.width = slot->advance.x >> 6;
SetGlyphPtr(size, key, &new_glyph);
return new_glyph.sprite;
}
uint GetGlyphWidth(FontSize size, WChar key)
{
FT_Face face = GetFontFace(size);
GlyphEntry *glyph;
if (face == NULL || (key >= SCC_SPRITE_START && key <= SCC_SPRITE_END)) {
SpriteID sprite = GetUnicodeGlyph(size, key);
if (sprite == 0) sprite = GetUnicodeGlyph(size, '?');
return SpriteExists(sprite) ? GetSprite(sprite, ST_FONT)->width + (size != FS_NORMAL) : 0;
}
glyph = GetGlyphPtr(size, key);
if (glyph == NULL || glyph->sprite == NULL) {
GetGlyph(size, key);
glyph = GetGlyphPtr(size, key);
}
return glyph->width;
}
#endif /* WITH_FREETYPE */
/** Reset the font sizes to the defaults of the sprite based fonts. */
void ResetFontSizes()
{
_font_height[FS_SMALL] = 6;
_font_height[FS_NORMAL] = 10;
_font_height[FS_LARGE] = 18;
}
/* Sprite based glyph mapping */
#include "table/unicode.h"
static SpriteID **_unicode_glyph_map[FS_END];
/** Get the SpriteID of the first glyph for the given font size */
static SpriteID GetFontBase(FontSize size)
{
switch (size) {
default: NOT_REACHED();
case FS_NORMAL: return SPR_ASCII_SPACE;
case FS_SMALL: return SPR_ASCII_SPACE_SMALL;
case FS_LARGE: return SPR_ASCII_SPACE_BIG;
}
}
SpriteID GetUnicodeGlyph(FontSize size, uint32 key)
{
if (_unicode_glyph_map[size][GB(key, 8, 8)] == NULL) return 0;
return _unicode_glyph_map[size][GB(key, 8, 8)][GB(key, 0, 8)];
}
void SetUnicodeGlyph(FontSize size, uint32 key, SpriteID sprite)
{
if (_unicode_glyph_map[size] == NULL) _unicode_glyph_map[size] = CallocT<SpriteID*>(256);
if (_unicode_glyph_map[size][GB(key, 8, 8)] == NULL) _unicode_glyph_map[size][GB(key, 8, 8)] = CallocT<SpriteID>(256);
_unicode_glyph_map[size][GB(key, 8, 8)][GB(key, 0, 8)] = sprite;
}
void InitializeUnicodeGlyphMap()
{
for (FontSize size = FS_BEGIN; size != FS_END; size++) {
/* Clear out existing glyph map if it exists */
if (_unicode_glyph_map[size] != NULL) {
for (uint i = 0; i < 256; i++) {
free(_unicode_glyph_map[size][i]);
}
free(_unicode_glyph_map[size]);
_unicode_glyph_map[size] = NULL;
}
SpriteID base = GetFontBase(size);
for (uint i = ASCII_LETTERSTART; i < 256; i++) {
SpriteID sprite = base + i - ASCII_LETTERSTART;
if (!SpriteExists(sprite)) continue;
SetUnicodeGlyph(size, i, sprite);
SetUnicodeGlyph(size, i + SCC_SPRITE_START, sprite);
}
for (uint i = 0; i < lengthof(_default_unicode_map); i++) {
byte key = _default_unicode_map[i].key;
if (key == CLRA || key == CLRL) {
/* Clear the glyph. This happens if the glyph at this code point
* is non-standard and should be accessed by an SCC_xxx enum
* entry only. */
if (key == CLRA || size == FS_LARGE) {
SetUnicodeGlyph(size, _default_unicode_map[i].code, 0);
}
} else {
SpriteID sprite = base + key - ASCII_LETTERSTART;
SetUnicodeGlyph(size, _default_unicode_map[i].code, sprite);
}
}
}
}
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