diff options
Diffstat (limited to 'src/os')
| -rw-r--r-- | src/os/windows/CMakeLists.txt | 2 | ||||
| -rw-r--r-- | src/os/windows/font_win32.cpp | 675 | ||||
| -rw-r--r-- | src/os/windows/font_win32.h | 42 |
3 files changed, 719 insertions, 0 deletions
diff --git a/src/os/windows/CMakeLists.txt b/src/os/windows/CMakeLists.txt index 19d1bd46e..8ac2de7ac 100644 --- a/src/os/windows/CMakeLists.txt +++ b/src/os/windows/CMakeLists.txt @@ -1,5 +1,7 @@ add_files( crashlog_win.cpp + font_win32.cpp + font_win32.h string_uniscribe.cpp string_uniscribe.h win32.cpp diff --git a/src/os/windows/font_win32.cpp b/src/os/windows/font_win32.cpp new file mode 100644 index 000000000..4bcbb145d --- /dev/null +++ b/src/os/windows/font_win32.cpp @@ -0,0 +1,675 @@ +/* + * 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 font_win32.cpp Functions related to font handling on Win32. */ + +#include "../../stdafx.h" +#include "../../debug.h" +#include "font_win32.h" +#include "../../blitter/factory.hpp" +#include "../../core/alloc_func.hpp" +#include "../../core/math_func.hpp" +#include "../../fileio_func.h" +#include "../../fontdetection.h" +#include "../../fontcache.h" +#include "../../string_func.h" +#include "../../strings_func.h" +#include "../../zoom_func.h" + +#include "../../table/control_codes.h" + +#include <windows.h> +#include <shlobj.h> /* SHGetFolderPath */ +#include "os/windows/win32.h" +#undef small // Say what, Windows? + +#include "safeguards.h" + +#ifdef WITH_FREETYPE + +#include <ft2build.h> +#include FT_FREETYPE_H + +extern FT_Library _library; + +/** + * 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 system encoding. + * @return the short path in ANSI (ASCII). + */ +static const char *GetShortPath(const TCHAR *long_path) +{ + static char short_path[MAX_PATH]; +#ifdef UNICODE + WCHAR short_path_w[MAX_PATH]; + GetShortPathName(long_path, short_path_w, lengthof(short_path_w)); + WideCharToMultiByte(CP_ACP, 0, short_path_w, -1, short_path, lengthof(short_path), nullptr, nullptr); +#else + /* Technically not needed, but do it for consistency. */ + GetShortPathName(long_path, short_path, lengthof(short_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" +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 *pathbuf; + const char *font_path; + uint index; + size_t path_len; + + /* 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; + } + + /* Convert font name to file system encoding. */ + TCHAR *font_namep = _tcsdup(OTTD2FS(font_name)); + + for (index = 0;; index++) { + TCHAR *s; + DWORD vbuflen = lengthof(vbuffer); + DWORD dbuflen = lengthof(dbuffer); + + ret = RegEnumValue(hKey, index, vbuffer, &vbuflen, nullptr, nullptr, (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 separated + * by '&'. 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 != nullptr) s[-1] = '\0'; + + if (_tcschr(vbuffer, _T('&')) == nullptr) { + if (_tcsicmp(vbuffer, font_namep) == 0) break; + } else { + if (_tcsstr(vbuffer, font_namep) != nullptr) break; + } + } + + if (!SUCCEEDED(OTTDSHGetFolderPath(nullptr, CSIDL_FONTS, nullptr, 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. */ + path_len = _tcslen(vbuffer) + _tcslen(dbuffer) + 2; // '\' and terminating nul. + pathbuf = AllocaM(TCHAR, path_len); + _sntprintf(pathbuf, path_len, _T("%s\\%s"), vbuffer, dbuffer); + + /* Convert the path into something that FreeType understands. */ + font_path = GetShortPath(pathbuf); + + 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: + free(font_namep); + 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 = nullptr; + 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 == nullptr) goto err1; + + dc = GetDC(nullptr); + oldfont = SelectObject(dc, font); + dw = GetFontData(dc, 'eman', 0, nullptr, 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 = std::min<uint16>(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(nullptr, dc); + DeleteObject(font); +err1: + return ret_font_name == nullptr ? WIDE_TO_MB((const TCHAR *)logfont->elfFullName) : ret_font_name; +} +#endif /* WITH_FREETYPE */ + +class FontList { +protected: + TCHAR **fonts; + uint items; + uint capacity; + +public: + FontList() : fonts(nullptr), items(0), capacity(0) { }; + + ~FontList() { + if (this->fonts == nullptr) return; + + for (uint i = 0; i < this->items; i++) { + free(this->fonts[i]); + } + + free(this->fonts); + } + + bool Add(const TCHAR *font) { + for (uint i = 0; i < this->items; i++) { + if (_tcscmp(this->fonts[i], font) == 0) return false; + } + + if (this->items == this->capacity) { + this->capacity += 10; + this->fonts = ReallocT(this->fonts, this->capacity); + } + + this->fonts[this->items++] = _tcsdup(font); + + return true; + } +}; + +struct EFCParam { + FreeTypeSettings *settings; + LOCALESIGNATURE locale; + MissingGlyphSearcher *callback; + FontList fonts; +}; + +static int CALLBACK EnumFontCallback(const ENUMLOGFONTEX *logfont, const NEWTEXTMETRICEX *metric, DWORD type, LPARAM lParam) +{ + EFCParam *info = (EFCParam *)lParam; + + /* Skip duplicates */ + if (!info->fonts.Add((const TCHAR *)logfont->elfFullName)) return 1; + /* Only use TrueType fonts */ + if (!(type & TRUETYPE_FONTTYPE)) return 1; + /* Don't use SYMBOL fonts */ + if (logfont->elfLogFont.lfCharSet == SYMBOL_CHARSET) return 1; + /* Use monospaced fonts when asked for it. */ + if (info->callback->Monospace() && (logfont->elfLogFont.lfPitchAndFamily & (FF_MODERN | FIXED_PITCH)) != (FF_MODERN | FIXED_PITCH)) 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 != nullptr) { + HDC dc = GetDC(nullptr); + HGDIOBJ oldfont = SelectObject(dc, font); + GetTextCharsetInfo(dc, &fs, 0); + SelectObject(dc, oldfont); + ReleaseDC(nullptr, 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]; + convert_from_fs((const TCHAR *)logfont->elfFullName, font_name, lengthof(font_name)); + +#ifdef WITH_FREETYPE + /* 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 != nullptr; + 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 = nullptr; + } + + if (!found) return 1; +#else + const char *english_name = font_name; +#endif /* WITH_FREETYPE */ + + info->callback->SetFontNames(info->settings, font_name, &logfont->elfLogFont); + if (info->callback->FindMissingGlyphs()) 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, MissingGlyphSearcher *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(nullptr); + int ret = EnumFontFamiliesEx(dc, &font, (FONTENUMPROC)&EnumFontCallback, (LPARAM)&langInfo, 0); + ReleaseDC(nullptr, dc); + return ret == 0; +} + + +#ifndef ANTIALIASED_QUALITY +#define ANTIALIASED_QUALITY 4 +#endif + +/** + * Create a new Win32FontCache. + * @param fs The font size that is going to be cached. + * @param logfont The font that has to be loaded. + * @param pixels The number of pixels this font should be high. + */ +Win32FontCache::Win32FontCache(FontSize fs, const LOGFONT &logfont, int pixels) : TrueTypeFontCache(fs, pixels), logfont(logfont) +{ + this->dc = CreateCompatibleDC(nullptr); + this->SetFontSize(fs, pixels); +} + +Win32FontCache::~Win32FontCache() +{ + this->ClearFontCache(); + DeleteDC(this->dc); + DeleteObject(this->font); +} + +void Win32FontCache::SetFontSize(FontSize fs, int pixels) +{ + if (pixels == 0) { + /* Try to determine a good height based on the minimal height recommended by the font. */ + int scaled_height = ScaleFontTrad(this->GetDefaultFontHeight(this->fs)); + pixels = scaled_height; + + HFONT temp = CreateFontIndirect(&this->logfont); + if (temp != nullptr) { + HGDIOBJ old = SelectObject(this->dc, temp); + + UINT size = GetOutlineTextMetrics(this->dc, 0, nullptr); + LPOUTLINETEXTMETRIC otm = (LPOUTLINETEXTMETRIC)AllocaM(BYTE, size); + GetOutlineTextMetrics(this->dc, size, otm); + + /* Font height is minimum height plus the difference between the default + * height for this font size and the small size. */ + int diff = scaled_height - ScaleFontTrad(this->GetDefaultFontHeight(FS_SMALL)); + pixels = Clamp(std::min(otm->otmusMinimumPPEM, 20u) + diff, scaled_height, MAX_FONT_SIZE); + + SelectObject(dc, old); + DeleteObject(temp); + } + } else { + pixels = ScaleFontTrad(pixels); + } + this->used_size = pixels; + + /* Create GDI font handle. */ + this->logfont.lfHeight = -pixels; + this->logfont.lfWidth = 0; + this->logfont.lfOutPrecision = ANTIALIASED_QUALITY; + + if (this->font != nullptr) { + SelectObject(dc, this->old_font); + DeleteObject(this->font); + } + this->font = CreateFontIndirect(&this->logfont); + this->old_font = SelectObject(this->dc, this->font); + + /* Query the font metrics we needed. */ + UINT otmSize = GetOutlineTextMetrics(this->dc, 0, nullptr); + POUTLINETEXTMETRIC otm = (POUTLINETEXTMETRIC)AllocaM(BYTE, otmSize); + GetOutlineTextMetrics(this->dc, otmSize, otm); + + this->units_per_em = otm->otmEMSquare; + this->ascender = otm->otmTextMetrics.tmAscent; + this->descender = otm->otmTextMetrics.tmDescent; + this->height = this->ascender + this->descender; + this->glyph_size.cx = otm->otmTextMetrics.tmMaxCharWidth; + this->glyph_size.cy = otm->otmTextMetrics.tmHeight; + + DEBUG(freetype, 2, "Loaded font '%s' with size %d", FS2OTTD((LPTSTR)((BYTE *)otm + (ptrdiff_t)otm->otmpFullName)), pixels); +} + +/** + * Reset cached glyphs. + */ +void Win32FontCache::ClearFontCache() +{ + /* GUI scaling might have changed, determine font size anew if it was automatically selected. */ + if (this->font != nullptr) this->SetFontSize(this->fs, this->req_size); + + this->TrueTypeFontCache::ClearFontCache(); +} + +/* virtual */ const Sprite *Win32FontCache::InternalGetGlyph(GlyphID key, bool aa) +{ + GLYPHMETRICS gm; + MAT2 mat = { {0, 1}, {0, 0}, {0, 0}, {0, 1} }; + + /* Make a guess for the needed memory size. */ + DWORD size = this->glyph_size.cy * Align(aa ? this->glyph_size.cx : std::max(this->glyph_size.cx / 8l, 1l), 4); // Bitmap data is DWORD-aligned rows. + byte *bmp = AllocaM(byte, size); + size = GetGlyphOutline(this->dc, key, GGO_GLYPH_INDEX | (aa ? GGO_GRAY8_BITMAP : GGO_BITMAP), &gm, size, bmp, &mat); + + if (size == GDI_ERROR) { + /* No dice with the guess. First query size of needed glyph memory, then allocate the + * memory and query again. This dance is necessary as some glyphs will only render with + * the exact matching size; e.g. the space glyph has no pixels and must be requested + * with size == 0, anything else fails. Unfortunately, a failed call doesn't return any + * info about the size and thus the triple GetGlyphOutline()-call. */ + size = GetGlyphOutline(this->dc, key, GGO_GLYPH_INDEX | (aa ? GGO_GRAY8_BITMAP : GGO_BITMAP), &gm, 0, nullptr, &mat); + if (size == GDI_ERROR) usererror("Unable to render font glyph"); + bmp = AllocaM(byte, size); + GetGlyphOutline(this->dc, key, GGO_GLYPH_INDEX | (aa ? GGO_GRAY8_BITMAP : GGO_BITMAP), &gm, size, bmp, &mat); + } + + /* Add 1 pixel for the shadow on the medium font. Our sprite must be at least 1x1 pixel. */ + uint width = std::max(1U, (uint)gm.gmBlackBoxX + (this->fs == FS_NORMAL)); + uint height = std::max(1U, (uint)gm.gmBlackBoxY + (this->fs == FS_NORMAL)); + + /* Limit glyph size to prevent overflows later on. */ + if (width > 256 || height > 256) usererror("Font glyph is too large"); + + /* GDI has rendered the glyph, now we allocate a sprite and copy the image into it. */ + SpriteLoader::Sprite sprite; + sprite.AllocateData(ZOOM_LVL_NORMAL, width * height); + sprite.type = ST_FONT; + sprite.width = width; + sprite.height = height; + sprite.x_offs = gm.gmptGlyphOrigin.x; + sprite.y_offs = this->ascender - gm.gmptGlyphOrigin.y; + + if (size > 0) { + /* All pixel data returned by GDI is in the form of DWORD-aligned rows. + * For a non anti-aliased glyph, the returned bitmap has one bit per pixel. + * For anti-aliased rendering, GDI uses the strange value range of 0 to 64, + * inclusively. To map this to 0 to 255, we shift left by two and then + * subtract one. */ + uint pitch = Align(aa ? gm.gmBlackBoxX : std::max(gm.gmBlackBoxX / 8u, 1u), 4); + + /* Draw shadow for medium size. */ + if (this->fs == FS_NORMAL && !aa) { + for (uint y = 0; y < gm.gmBlackBoxY; y++) { + for (uint x = 0; x < gm.gmBlackBoxX; x++) { + if (aa ? (bmp[x + y * pitch] > 0) : HasBit(bmp[(x / 8) + y * 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 ? (bmp[x + y * pitch] << 2) - 1 : 0xFF; + } + } + } + } + + for (uint y = 0; y < gm.gmBlackBoxY; y++) { + for (uint x = 0; x < gm.gmBlackBoxX; x++) { + if (aa ? (bmp[x + y * pitch] > 0) : HasBit(bmp[(x / 8) + y * pitch], 7 - (x % 8))) { + sprite.data[x + y * sprite.width].m = FACE_COLOUR; + sprite.data[x + y * sprite.width].a = aa ? (bmp[x + y * pitch] << 2) - 1 : 0xFF; + } + } + } + } + + GlyphEntry new_glyph; + new_glyph.sprite = BlitterFactory::GetCurrentBlitter()->Encode(&sprite, AllocateFont); + new_glyph.width = gm.gmCellIncX; + + this->SetGlyphPtr(key, &new_glyph); + + return new_glyph.sprite; +} + +/* virtual */ GlyphID Win32FontCache::MapCharToGlyph(WChar key) +{ + assert(IsPrintable(key)); + + if (key >= SCC_SPRITE_START && key <= SCC_SPRITE_END) { + return this->parent->MapCharToGlyph(key); + } + + /* Convert characters outside of the BMP into surrogate pairs. */ + WCHAR chars[2]; + if (key >= 0x010000U) { + chars[0] = (WCHAR)(((key - 0x010000U) >> 10) + 0xD800); + chars[1] = (WCHAR)(((key - 0x010000U) & 0x3FF) + 0xDC00); + } else { + chars[0] = (WCHAR)(key & 0xFFFF); + } + + WORD glyphs[2] = { 0, 0 }; + GetGlyphIndicesW(this->dc, chars, key >= 0x010000U ? 2 : 1, glyphs, GGI_MARK_NONEXISTING_GLYPHS); + + return glyphs[0] != 0xFFFF ? glyphs[0] : 0; +} + +/* virtual */ const void *Win32FontCache::InternalGetFontTable(uint32 tag, size_t &length) +{ + DWORD len = GetFontData(this->dc, tag, 0, nullptr, 0); + + void *result = nullptr; + if (len != GDI_ERROR && len > 0) { + result = MallocT<BYTE>(len); + GetFontData(this->dc, tag, 0, result, len); + } + + length = len; + return result; +} + + +/** + * Loads the GDI font. + * If a GDI font description is present, e.g. from the automatic font + * fallback search, use it. Otherwise, try to resolve it by font name. + * @param fs The font size to load. + */ +void LoadWin32Font(FontSize fs) +{ + static const char *SIZE_TO_NAME[] = { "medium", "small", "large", "mono" }; + + FreeTypeSubSetting *settings = nullptr; + switch (fs) { + case FS_SMALL: settings = &_freetype.small; break; + case FS_NORMAL: settings = &_freetype.medium; break; + case FS_LARGE: settings = &_freetype.large; break; + case FS_MONO: settings = &_freetype.mono; break; + default: NOT_REACHED(); + } + + if (StrEmpty(settings->font)) return; + + LOGFONT logfont; + MemSetT(&logfont, 0); + logfont.lfPitchAndFamily = fs == FS_MONO ? FIXED_PITCH : VARIABLE_PITCH; + logfont.lfCharSet = DEFAULT_CHARSET; + logfont.lfOutPrecision = OUT_OUTLINE_PRECIS; + logfont.lfClipPrecision = CLIP_DEFAULT_PRECIS; + + if (settings->os_handle != nullptr) { + logfont = *(const LOGFONT *)settings->os_handle; + } else if (strchr(settings->font, '.') != nullptr) { + /* Might be a font file name, try load it. */ + + TCHAR fontPath[MAX_PATH] = {}; + + /* See if this is an absolute path. */ + if (FileExists(settings->font)) { + convert_to_fs(settings->font, fontPath, lengthof(fontPath), false); + } else { + /* Scan the search-paths to see if it can be found. */ + std::string full_font = FioFindFullPath(BASE_DIR, settings->font); + if (!full_font.empty()) { + convert_to_fs(full_font.c_str(), fontPath, lengthof(fontPath), false); + } + } + + if (fontPath[0] != 0) { + if (AddFontResourceEx(fontPath, FR_PRIVATE, 0) != 0) { + /* Try a nice little undocumented function first for getting the internal font name. + * Some documentation is found at: http://www.undocprint.org/winspool/getfontresourceinfo */ + typedef BOOL(WINAPI *PFNGETFONTRESOURCEINFO)(LPCTSTR, LPDWORD, LPVOID, DWORD); +#ifdef UNICODE + static PFNGETFONTRESOURCEINFO GetFontResourceInfo = (PFNGETFONTRESOURCEINFO)GetProcAddress(GetModuleHandle(_T("Gdi32")), "GetFontResourceInfoW"); +#else + static PFNGETFONTRESOURCEINFO GetFontResourceInfo = (PFNGETFONTRESOURCEINFO)GetProcAddress(GetModuleHandle(_T("Gdi32")), "GetFontResourceInfoA"); +#endif + + if (GetFontResourceInfo != nullptr) { + /* Try to query an array of LOGFONTs that describe the file. */ + DWORD len = 0; + if (GetFontResourceInfo(fontPath, &len, nullptr, 2) && len >= sizeof(LOGFONT)) { + LOGFONT *buf = (LOGFONT *)AllocaM(byte, len); + if (GetFontResourceInfo(fontPath, &len, buf, 2)) { + logfont = *buf; // Just use first entry. + } + } + } + + /* No dice yet. Use the file name as the font face name, hoping it matches. */ + if (logfont.lfFaceName[0] == 0) { + TCHAR fname[_MAX_FNAME]; + _tsplitpath(fontPath, nullptr, nullptr, fname, nullptr); + + _tcsncpy_s(logfont.lfFaceName, lengthof(logfont.lfFaceName), fname, _TRUNCATE); + logfont.lfWeight = strcasestr(settings->font, " bold") != nullptr || strcasestr(settings->font, "-bold") != nullptr ? FW_BOLD : FW_NORMAL; // Poor man's way to allow selecting bold fonts. + } + } else { + ShowInfoF("Unable to load file '%s' for %s font, using default windows font selection instead", settings->font, SIZE_TO_NAME[fs]); + } + } + } + + if (logfont.lfFaceName[0] == 0) { + logfont.lfWeight = strcasestr(settings->font, " bold") != nullptr ? FW_BOLD : FW_NORMAL; // Poor man's way to allow selecting bold fonts. + convert_to_fs(settings->font, logfont.lfFaceName, lengthof(logfont.lfFaceName), false); + } + + HFONT font = CreateFontIndirect(&logfont); + if (font == nullptr) { + ShowInfoF("Unable to use '%s' for %s font, Win32 reported error 0x%lX, using sprite font instead", settings->font, SIZE_TO_NAME[fs], GetLastError()); + return; + } + DeleteObject(font); + + new Win32FontCache(fs, logfont, settings->size); +} diff --git a/src/os/windows/font_win32.h b/src/os/windows/font_win32.h new file mode 100644 index 000000000..9a552125f --- /dev/null +++ b/src/os/windows/font_win32.h @@ -0,0 +1,42 @@ +/* + * 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 font_win32.h Functions related to font handling on Win32. */ + +#ifndef FONT_WIN32_H +#define FONT_WIN32_H + +#include "../../fontcache_internal.h" +#include "win32.h" + +/** Font cache for fonts that are based on a Win32 font. */ +class Win32FontCache : public TrueTypeFontCache { +private: + LOGFONT logfont; ///< Logical font information for selecting the font face. + HFONT font = nullptr; ///< The font face associated with this font. + HDC dc = nullptr; ///< Cached GDI device context. + HGDIOBJ old_font; ///< Old font selected into the GDI context. + SIZE glyph_size; ///< Maximum size of regular glyphs. + + void SetFontSize(FontSize fs, int pixels); + +protected: + const void *InternalGetFontTable(uint32 tag, size_t &length) override; + const Sprite *InternalGetGlyph(GlyphID key, bool aa) override; + +public: + Win32FontCache(FontSize fs, const LOGFONT &logfont, int pixels); + ~Win32FontCache(); + void ClearFontCache() override; + GlyphID MapCharToGlyph(WChar key) override; + const char *GetFontName() override { return WIDE_TO_MB(this->logfont.lfFaceName); } + const void *GetOSHandle() override { return &this->logfont; } +}; + +void LoadWin32Font(FontSize fs); + +#endif /* FONT_WIN32_H */ |