summaryrefslogtreecommitdiffstatshomepage
path: root/src/osd/modules/font/font_sdl.c
blob: 6ae72ca4fb313b70300df22a9261c2186592e63a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
/*
 * font_sdl.c
 *
 */

#include "font_module.h"
#include "modules/osdmodule.h"

#if defined(SDLMAME_UNIX) && (!defined(SDLMAME_MACOSX)) && (!defined(SDLMAME_SOLARIS)) && (!defined(SDLMAME_HAIKU)) && (!defined(SDLMAME_EMSCRIPTEN))

#if (SDLMAME_SDL2)
#include <SDL2/SDL_ttf.h>
#else
#include <SDL/SDL_ttf.h>
#endif
#ifndef SDLMAME_HAIKU
#include <fontconfig/fontconfig.h>
#endif


#include "astring.h"
#include "corealloc.h"
#include "fileio.h"

#define POINT_SIZE 144.0

//-------------------------------------------------
//  font_open - attempt to "open" a handle to the
//  font with the given name
//-------------------------------------------------

class osd_font_sdl : public osd_font
{
public:
    virtual ~osd_font_sdl() {};

    virtual bool open(const char *font_path, const char *name, int &height);
    virtual void close();
    virtual bool get_bitmap(unicode_char chnum, bitmap_argb32 &bitmap, INT32 &width, INT32 &xoffs, INT32 &yoffs);
private:
#ifndef SDLMAME_HAIKU
    TTF_Font *search_font_config(astring name, bool bold, bool italic, bool underline, bool &bakedstyles);
#endif
    bool BDF_Check_Magic(astring name);
    TTF_Font * TTF_OpenFont_Magic(astring name, int fsize);
    TTF_Font *m_font;
};

bool osd_font_sdl::open(const char *font_path, const char *_name, int &height)
{
    TTF_Font *font = (TTF_Font *)NULL;
    bool bakedstyles = false;
    int style = 0;

    // accept qualifiers from the name
    astring name(_name);

    if (name == "default")
    {
        name = "Liberation Sans";
    }

    bool bold = (name.replace(0, "[B]", "") + name.replace(0, "[b]", "") > 0);
    bool italic = (name.replace(0, "[I]", "") + name.replace(0, "[i]", "") > 0);
    bool underline = (name.replace(0, "[U]", "") + name.replace(0, "[u]", "") > 0);
    bool strike = (name.replace(0, "[S]", "") + name.replace(0, "[s]", "") > 0);

    // first up, try it as a filename
    font = TTF_OpenFont_Magic(name, POINT_SIZE);

    // if no success, try the font path

    if (!font)
    {
        osd_printf_verbose("Searching font %s in -%s\n", name.cstr(), OPTION_FONTPATH);
        //emu_file file(options().font_path(), OPEN_FLAG_READ);
        emu_file file(font_path, OPEN_FLAG_READ);
        if (file.open(name) == FILERR_NONE)
        {
            astring full_name = file.fullpath();
            font = TTF_OpenFont_Magic(full_name, POINT_SIZE);
            if (font)
                osd_printf_verbose("Found font %s\n", full_name.cstr());
        }
    }

    // if that didn't work, crank up the FontConfig database
#ifndef SDLMAME_HAIKU
    if (!font)
    {
        font = search_font_config(name, bold, italic, underline, bakedstyles);
    }
#endif

    if (!font)
    {
        if (!BDF_Check_Magic(name))
        {
            osd_printf_verbose("font %s is not TrueType or BDF, using MAME default\n", name.cstr());
        }
        return NULL;
    }

    // apply styles
    if (!bakedstyles)
    {
        style |= bold ? TTF_STYLE_BOLD : 0;
        style |= italic ? TTF_STYLE_ITALIC : 0;
    }
    style |= underline ? TTF_STYLE_UNDERLINE : 0;
    // SDL_ttf 2.0.9 and earlier does not define TTF_STYLE_STRIKETHROUGH
#if SDL_VERSIONNUM(TTF_MAJOR_VERSION, TTF_MINOR_VERSION, TTF_PATCHLEVEL) > SDL_VERSIONNUM(2,0,9)
    style |= strike ? TTF_STYLE_STRIKETHROUGH : 0;
#else
    if (strike)
        osd_printf_warning("Ignoring strikethrough for SDL_TTF older than 2.0.10\n");
#endif // PATCHLEVEL
    TTF_SetFontStyle(font, style);

    height = TTF_FontLineSkip(font);

    m_font = font;
    return true;
}

//-------------------------------------------------
//  font_close - release resources associated with
//  a given OSD font
//-------------------------------------------------

void osd_font_sdl::close()
{
    TTF_CloseFont(this->m_font);
}

//-------------------------------------------------
//  font_get_bitmap - allocate and populate a
//  BITMAP_FORMAT_ARGB32 bitmap containing the
//  pixel values rgb_t(0xff,0xff,0xff,0xff)
//  or rgb_t(0x00,0xff,0xff,0xff) for each
//  pixel of a black & white font
//-------------------------------------------------

bool osd_font_sdl::get_bitmap(unicode_char chnum, bitmap_argb32 &bitmap, INT32 &width, INT32 &xoffs, INT32 &yoffs)
{
    TTF_Font *ttffont;
    SDL_Surface *drawsurf;
    SDL_Color fcol = { 0xff, 0xff, 0xff };
    UINT16 ustr[16];

    ttffont = m_font;

    memset(ustr,0,sizeof(ustr));
    ustr[0] = (UINT16)chnum;
    drawsurf = TTF_RenderUNICODE_Solid(ttffont, ustr, fcol);

    // was nothing returned?
    if (drawsurf)
    {
        // allocate a MAME destination bitmap
        bitmap.allocate(drawsurf->w, drawsurf->h);

        // copy the rendered character image into it
        for (int y = 0; y < bitmap.height(); y++)
        {
            UINT32 *dstrow = &bitmap.pix32(y);
            UINT8 *srcrow = (UINT8 *)drawsurf->pixels;

            srcrow += (y * drawsurf->pitch);

            for (int x = 0; x < drawsurf->w; x++)
            {
                dstrow[x] = srcrow[x] ? rgb_t(0xff,0xff,0xff,0xff) : rgb_t(0x00,0xff,0xff,0xff);
            }
        }

        // what are these?
        xoffs = yoffs = 0;
        width = drawsurf->w;

        SDL_FreeSurface(drawsurf);
    }

    return bitmap.valid();
}

TTF_Font * osd_font_sdl::TTF_OpenFont_Magic(astring name, int fsize)
{
    emu_file file(OPEN_FLAG_READ);
    if (file.open(name) == FILERR_NONE)
    {
        unsigned char buffer[5] = { 0xff, 0xff, 0xff, 0xff, 0xff };
        unsigned char magic[5] = { 0x00, 0x01, 0x00, 0x00, 0x00 };
        file.read(buffer,5);
        if (memcmp(buffer, magic, 5))
            return NULL;
    }
    return TTF_OpenFont(name.cstr(), POINT_SIZE);
}

bool osd_font_sdl::BDF_Check_Magic(astring name)
{
    emu_file file(OPEN_FLAG_READ);
    if (file.open(name) == FILERR_NONE)
    {
        unsigned char buffer[9];
        unsigned char magic[9] = { 'S', 'T', 'A', 'R', 'T', 'F', 'O', 'N', 'T' };
        file.read(buffer, 9);
        file.close();
        if (!memcmp(buffer, magic, 9))
            return true;
    }

    return false;
}

#ifndef SDLMAME_HAIKU
TTF_Font *osd_font_sdl::search_font_config(astring name, bool bold, bool italic, bool underline, bool &bakedstyles)
{
    TTF_Font *font = (TTF_Font *)NULL;
    FcConfig *config;
    FcPattern *pat;
    FcObjectSet *os;
    FcFontSet *fontset;
    FcValue val;

    config = FcConfigGetCurrent();
    pat = FcPatternCreate();
    os = FcObjectSetCreate();
    FcPatternAddString(pat, FC_FAMILY, (const FcChar8 *)name.cstr());

    // try and get a font with the requested styles baked-in
    if (bold)
    {
        if (italic)
        {
            FcPatternAddString(pat, FC_STYLE, (const FcChar8 *)"Bold Italic");
        }
        else
        {
            FcPatternAddString(pat, FC_STYLE, (const FcChar8 *)"Bold");
        }
    }
    else if (italic)
    {
        FcPatternAddString(pat, FC_STYLE, (const FcChar8 *)"Italic");
    }
    else
    {
        FcPatternAddString(pat, FC_STYLE, (const FcChar8 *)"Regular");
    }

    FcPatternAddString(pat, FC_FONTFORMAT, (const FcChar8 *)"TrueType");

    FcObjectSetAdd(os, FC_FILE);
    fontset = FcFontList(config, pat, os);

    for (int i = 0; i < fontset->nfont; i++)
    {
        if (FcPatternGet(fontset->fonts[i], FC_FILE, 0, &val) != FcResultMatch)
        {
            continue;
        }

        if (val.type != FcTypeString)
        {
            continue;
        }

        osd_printf_verbose("Matching font: %s\n", val.u.s);
        {
            astring match_name((const char*)val.u.s);
            font = TTF_OpenFont_Magic(match_name, POINT_SIZE);
        }

        if (font)
        {
            bakedstyles = true;
            break;
        }
    }

    // didn't get a font above?  try again with no baked-in styles
    if (!font)
    {
        FcPatternDestroy(pat);
        FcFontSetDestroy(fontset);

        pat = FcPatternCreate();
        FcPatternAddString(pat, FC_FAMILY, (const FcChar8 *)name.cstr());
        FcPatternAddString(pat, FC_STYLE, (const FcChar8 *)"Regular");
        FcPatternAddString(pat, FC_FONTFORMAT, (const FcChar8 *)"TrueType");
        fontset = FcFontList(config, pat, os);

        for (int i = 0; i < fontset->nfont; i++)
        {
            if (FcPatternGet(fontset->fonts[i], FC_FILE, 0, &val) != FcResultMatch)
            {
                continue;
            }

            if (val.type != FcTypeString)
            {
                continue;
            }

            osd_printf_verbose("Matching unstyled font: %s\n", val.u.s);
            {
                astring match_name((const char*)val.u.s);
                font = TTF_OpenFont_Magic(match_name, POINT_SIZE);
            }

            if (font)
            {
                break;
            }
        }
    }

    FcPatternDestroy(pat);
    FcObjectSetDestroy(os);
    FcFontSetDestroy(fontset);
    return font;
}
#endif


class font_sdl : public osd_module, public font_module
{
public:
    font_sdl()
    : osd_module(OSD_FONT_PROVIDER, "sdl"), font_module()
    {
    }

    osd_font *font_alloc()
    {
        return global_alloc(osd_font_sdl);
    }

    int init()
    {
        if (TTF_Init() == -1)
        {
            osd_printf_error("SDL_ttf failed: %s\n", TTF_GetError());
            return -1;
        }
        return 0;
    }

    virtual void exit()
    {
        TTF_Quit();
    }
};
#else /* SDLMAME_UNIX */
    MODULE_NOT_SUPPORTED(font_sdl, OSD_FONT_PROVIDER, "sdl")
#endif

MODULE_DEFINITION(FONT_SDL, font_sdl)