From 8201df7bb6b7c5174b86599bcb3aa3130db30bf8 Mon Sep 17 00:00:00 2001 From: Johannes Schickel Date: Fri, 1 Jul 2011 21:10:25 +0200 Subject: GRAPHICS: Move NewFont code to a separate file. --- graphics/font.cpp | 766 +----------------------------------------------------- 1 file changed, 2 insertions(+), 764 deletions(-) (limited to 'graphics/font.cpp') diff --git a/graphics/font.cpp b/graphics/font.cpp index 0c180ee47d..3f7152a95e 100644 --- a/graphics/font.cpp +++ b/graphics/font.cpp @@ -19,775 +19,13 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ -#include "common/stream.h" -#include "common/file.h" -#include "common/endian.h" +#include "graphics/font.h" + #include "common/array.h" -#include "common/textconsole.h" #include "common/util.h" -#include "graphics/font.h" -#include "graphics/surface.h" namespace Graphics { -void free_font(NewFontData *pf); - -NewFont::~NewFont() { - if (_font) { - free_font(_font); - } -} - -int NewFont::getCharWidth(byte chr) const { - // If no width table is specified, return the maximum width - if (!_desc.width) - return _desc.maxwidth; - // If this character is not included in the font, use the default char. - if (chr < _desc.firstchar || _desc.firstchar + _desc.size < chr) { - chr = _desc.defaultchar; - } - return _desc.width[chr - _desc.firstchar]; -} - - -template -void drawCharIntern(byte *ptr, uint pitch, const bitmap_t *src, int h, int minX, int maxX, const PixelType color) { - const bitmap_t maxXMask = ~((1 << (16-maxX)) - 1); - while (h-- > 0) { - bitmap_t buffer = READ_UINT16(src); - src++; - - buffer &= maxXMask; - buffer <<= minX; - PixelType *tmp = (PixelType *)ptr; - while (buffer != 0) { - if ((buffer & 0x8000) != 0) - *tmp = color; - tmp++; - buffer <<= 1; - } - - ptr += pitch; - } -} - -void NewFont::drawChar(Surface *dst, byte chr, const int tx, const int ty, const uint32 color) const { - assert(dst != 0); - - assert(_desc.bits != 0 && _desc.maxwidth <= 16); - assert(dst->format.bytesPerPixel == 1 || dst->format.bytesPerPixel == 2); - - // If this character is not included in the font, use the default char. - if (chr < _desc.firstchar || chr >= _desc.firstchar + _desc.size) { - chr = _desc.defaultchar; - } - - chr -= _desc.firstchar; - - int bbw, bbh, bbx, bby; - - // Get the bounding box of the character - if (!_desc.bbx) { - bbw = _desc.fbbw; - bbh = _desc.fbbh; - bbx = _desc.fbbx; - bby = _desc.fbby; - } else { - bbw = _desc.bbx[chr].w; - bbh = _desc.bbx[chr].h; - bbx = _desc.bbx[chr].x; - bby = _desc.bbx[chr].y; - } - - byte *ptr = (byte *)dst->getBasePtr(tx + bbx, ty + _desc.ascent - bby - bbh); - - const bitmap_t *tmp = _desc.bits + (_desc.offset ? _desc.offset[chr] : (chr * _desc.fbbh)); - - int y = MIN(bbh, ty + _desc.ascent - bby); - tmp += bbh - y; - y -= MAX(0, ty + _desc.ascent - bby - dst->h); - - if (dst->format.bytesPerPixel == 1) - drawCharIntern(ptr, dst->pitch, tmp, y, MAX(0, -(tx + bbx)), MIN(bbw, dst->w - tx - bbx), color); - else if (dst->format.bytesPerPixel == 2) - drawCharIntern(ptr, dst->pitch, tmp, y, MAX(0, -(tx + bbx)), MIN(bbw, dst->w - tx - bbx), color); -} - - -#pragma mark - - -/* BEGIN font.h*/ -/* bitmap_t helper macros*/ -#define BITMAP_WORDS(x) (((x)+15)/16) /* image size in words*/ -#define BITMAP_BYTES(x) (BITMAP_WORDS(x)*sizeof(bitmap_t)) -#define BITMAP_BITSPERIMAGE (sizeof(bitmap_t) * 8) -#define BITMAP_BITVALUE(n) ((bitmap_t) (((bitmap_t) 1) << (n))) -#define BITMAP_FIRSTBIT (BITMAP_BITVALUE(BITMAP_BITSPERIMAGE - 1)) -#define BITMAP_TESTBIT(m) ((m) & BITMAP_FIRSTBIT) -#define BITMAP_SHIFTBIT(m) ((bitmap_t) ((m) << 1)) - -/* builtin C-based proportional/fixed font structure */ -/* based on The Microwindows Project http://microwindows.org */ -struct NewFontData { - char * name; /* font name*/ - int maxwidth; /* max width in pixels*/ - int height; /* height in pixels*/ - int ascent; /* ascent (baseline) height*/ - int firstchar; /* first character in bitmap*/ - int size; /* font size in glyphs*/ - bitmap_t* bits; /* 16-bit right-padded bitmap data*/ - unsigned long* offset; /* offsets into bitmap data*/ - unsigned char* width; /* character widths or NULL if fixed*/ - BBX* bbx; /* character bounding box or NULL if fixed */ - int defaultchar; /* default char (not glyph index)*/ - long bits_size; /* # words of bitmap_t bits*/ - - /* unused by runtime system, read in by convbdf*/ - char * facename; /* facename of font*/ - char * copyright; /* copyright info for loadable fonts*/ - int pixel_size; - int descent; - int fbbw, fbbh, fbbx, fbby; -}; -/* END font.h*/ - -#define isprefix(buf,str) (!strncmp(buf, str, strlen(str))) -#define strequal(s1,s2) (!strcmp(s1, s2)) - -#define EXTRA 300 - -int start_char = 0; -int limit_char = 255; - -NewFontData* bdf_read_font(Common::SeekableReadStream &fp); -int bdf_read_header(Common::SeekableReadStream &fp, NewFontData* pf); -int bdf_read_bitmaps(Common::SeekableReadStream &fp, NewFontData* pf); -char * bdf_getline(Common::SeekableReadStream &fp, char *buf, int len); -bitmap_t bdf_hexval(unsigned char *buf); - -void free_font(NewFontData* pf) { - if (!pf) - return; - free(pf->name); - free(pf->facename); - free(pf->bits); - free(pf->offset); - free(pf->width); - free(pf->bbx); - free(pf); -} - -/* build incore structure from .bdf file*/ -NewFontData* bdf_read_font(Common::SeekableReadStream &fp) { - NewFontData* pf; - uint32 pos = fp.pos(); - - pf = (NewFontData*)calloc(1, sizeof(NewFontData)); - if (!pf) - goto errout; - - if (!bdf_read_header(fp, pf)) { - warning("Error reading font header"); - goto errout; - } - - fp.seek(pos, SEEK_SET); - - if (!bdf_read_bitmaps(fp, pf)) { - warning("Error reading font bitmaps"); - goto errout; - } - - return pf; - - errout: - free_font(pf); - return NULL; -} - -/* read bdf font header information, return 0 on error*/ -int bdf_read_header(Common::SeekableReadStream &fp, NewFontData* pf) { - int encoding = 0; - int nchars = 0, maxwidth, maxheight; - int firstchar = 65535; - int lastchar = -1; - char buf[256]; - char facename[256]; - char copyright[256]; - memset(facename, 0, sizeof(facename)); - memset(copyright, 0, sizeof(copyright)); - - /* set certain values to errors for later error checking*/ - pf->defaultchar = -1; - pf->ascent = -1; - pf->descent = -1; - - for (;;) { - if (!bdf_getline(fp, buf, sizeof(buf))) { - warning("Error: EOF on file"); - return 0; - } - - /* note: the way sscanf is used here ensures that a terminating null - character is automatically added. Refer to: - http://pubs.opengroup.org/onlinepubs/009695399/functions/fscanf.html */ - - if (isprefix(buf, "FONT ")) { /* not required*/ - if (sscanf(buf, "FONT %[^\n]", facename) != 1) { - warning("Error: bad 'FONT'"); - return 0; - } - - pf->facename = strdup(facename); - continue; - } - if (isprefix(buf, "COPYRIGHT ")) { /* not required*/ - if (sscanf(buf, "COPYRIGHT \"%[^\"]", copyright) != 1) { - warning("Error: bad 'COPYRIGHT'"); - return 0; - } - - pf->copyright = strdup(copyright); - continue; - } - if (isprefix(buf, "DEFAULT_CHAR ")) { /* not required*/ - if (sscanf(buf, "DEFAULT_CHAR %d", &pf->defaultchar) != 1) { - warning("Error: bad 'DEFAULT_CHAR'"); - return 0; - } - } - if (isprefix(buf, "FONT_DESCENT ")) { - if (sscanf(buf, "FONT_DESCENT %d", &pf->descent) != 1) { - warning("Error: bad 'FONT_DESCENT'"); - return 0; - } - continue; - } - if (isprefix(buf, "FONT_ASCENT ")) { - if (sscanf(buf, "FONT_ASCENT %d", &pf->ascent) != 1) { - warning("Error: bad 'FONT_ASCENT'"); - return 0; - } - continue; - } - if (isprefix(buf, "FONTBOUNDINGBOX ")) { - if (sscanf(buf, "FONTBOUNDINGBOX %d %d %d %d", - &pf->fbbw, &pf->fbbh, &pf->fbbx, &pf->fbby) != 4) { - warning("Error: bad 'FONTBOUNDINGBOX'"); - return 0; - } - continue; - } - if (isprefix(buf, "CHARS ")) { - if (sscanf(buf, "CHARS %d", &nchars) != 1) { - warning("Error: bad 'CHARS'"); - return 0; - } - continue; - } - - /* - * Reading ENCODING is necessary to get firstchar/lastchar - * which is needed to pre-calculate our offset and widths - * array sizes. - */ - if (isprefix(buf, "ENCODING ")) { - if (sscanf(buf, "ENCODING %d", &encoding) != 1) { - warning("Error: bad 'ENCODING'"); - return 0; - } - if (encoding >= 0 && - encoding <= limit_char && - encoding >= start_char) { - - if (firstchar > encoding) - firstchar = encoding; - if (lastchar < encoding) - lastchar = encoding; - } - continue; - } - if (strequal(buf, "ENDFONT")) - break; - } - - /* calc font height*/ - if (pf->ascent < 0 || pf->descent < 0 || firstchar < 0) { - warning("Error: Invalid BDF file, requires FONT_ASCENT/FONT_DESCENT/ENCODING"); - return 0; - } - pf->height = pf->ascent + pf->descent; - - /* calc default char*/ - if (pf->defaultchar < 0 || - pf->defaultchar < firstchar || - pf->defaultchar > limit_char ) - pf->defaultchar = firstchar; - - /* calc font size (offset/width entries)*/ - pf->firstchar = firstchar; - pf->size = lastchar - firstchar + 1; - - /* use the font boundingbox to get initial maxwidth*/ - /*maxwidth = pf->fbbw - pf->fbbx;*/ - maxwidth = pf->fbbw; - maxheight = pf->fbbh; - - /* initially use font bounding box for bits allocation*/ - pf->bits_size = nchars * BITMAP_WORDS(maxwidth) * maxheight; - - /* allocate bits, offset, and width arrays*/ - pf->bits = (bitmap_t *)malloc(pf->bits_size * sizeof(bitmap_t) + EXTRA); - pf->offset = (unsigned long *)malloc(pf->size * sizeof(unsigned long)); - pf->width = (unsigned char *)malloc(pf->size * sizeof(unsigned char)); - pf->bbx = (BBX *)malloc(pf->size * sizeof(BBX)); - - if (!pf->bits || !pf->offset || !pf->width) { - warning("Error: no memory for font load"); - return 0; - } - - return 1; -} - -/* read bdf font bitmaps, return 0 on error*/ -int bdf_read_bitmaps(Common::SeekableReadStream &fp, NewFontData* pf) { - long ofs = 0; - int maxwidth = 0; - int i, k, encoding = 0, width = 0; - int bbw = 0, bbh = 0, bbx = 0, bby = 0; - int proportional = 0; - int need_bbx = 0; - int encodetable = 0; - long l; - char buf[256]; - - /* initially mark offsets as not used*/ - for (i = 0; i < pf->size; ++i) - pf->offset[i] = (unsigned long)-1; - - for (;;) { - if (!bdf_getline(fp, buf, sizeof(buf))) { - warning("Error: EOF on file"); - return 0; - } - if (isprefix(buf, "STARTCHAR")) { - encoding = width = bbw = bbh = bbx = bby = -1; - continue; - } - if (isprefix(buf, "ENCODING ")) { - if (sscanf(buf, "ENCODING %d", &encoding) != 1) { - warning("Error: bad 'ENCODING'"); - return 0; - } - if (encoding < start_char || encoding > limit_char) - encoding = -1; - continue; - } - if (isprefix(buf, "DWIDTH ")) { - if (sscanf(buf, "DWIDTH %d", &width) != 1) { - warning("Error: bad 'DWIDTH'"); - return 0; - } - /* use font boundingbox width if DWIDTH <= 0*/ - if (width <= 0) - width = pf->fbbw - pf->fbbx; - continue; - } - if (isprefix(buf, "BBX ")) { - if (sscanf(buf, "BBX %d %d %d %d", &bbw, &bbh, &bbx, &bby) != 4) { - warning("Error: bad 'BBX'"); - return 0; - } - continue; - } - if (strequal(buf, "BITMAP")) { - bitmap_t *ch_bitmap = pf->bits + ofs; - int ch_words; - - if (encoding < 0) - continue; - - /* set bits offset in encode map*/ - if (pf->offset[encoding-pf->firstchar] != (unsigned long)-1) { - warning("Error: duplicate encoding for character %d (0x%02x), ignoring duplicate", - encoding, encoding); - continue; - } - pf->offset[encoding-pf->firstchar] = ofs; - pf->width[encoding-pf->firstchar] = width; - - pf->bbx[encoding-pf->firstchar].w = bbw; - pf->bbx[encoding-pf->firstchar].h = bbh; - pf->bbx[encoding-pf->firstchar].x = bbx; - pf->bbx[encoding-pf->firstchar].y = bby; - - if (width > maxwidth) - maxwidth = width; - - /* clear bitmap*/ - memset(ch_bitmap, 0, BITMAP_BYTES(bbw) * bbh); - - ch_words = BITMAP_WORDS(bbw); - - /* read bitmaps*/ - for (i = 0; i < bbh; ++i) { - if (!bdf_getline(fp, buf, sizeof(buf))) { - warning("Error: EOF reading BITMAP data"); - return 0; - } - if (isprefix(buf, "ENDCHAR")) - break; - - for (k = 0; k < ch_words; ++k) { - bitmap_t value; - - value = bdf_hexval((unsigned char *)buf); - if (bbw > 8) { - WRITE_UINT16(ch_bitmap, value); - } else { - WRITE_UINT16(ch_bitmap, value << 8); - } - ch_bitmap++; - } - } - - ofs += ch_words * bbh; - continue; - } - if (strequal(buf, "ENDFONT")) - break; - } - - /* set max width*/ - pf->maxwidth = maxwidth; - - /* change unused offset/width values to default char values*/ - for (i = 0; i < pf->size; ++i) { - int defchar = pf->defaultchar - pf->firstchar; - - if (pf->offset[i] == (unsigned long)-1) { - pf->offset[i] = pf->offset[defchar]; - pf->width[i] = pf->width[defchar]; - pf->bbx[i].w = pf->bbx[defchar].w; - pf->bbx[i].h = pf->bbx[defchar].h; - pf->bbx[i].x = pf->bbx[defchar].x; - pf->bbx[i].y = pf->bbx[defchar].y; - } - } - - /* determine whether font doesn't require encode table*/ - l = 0; - for (i = 0; i < pf->size; ++i) { - if (pf->offset[i] != (unsigned long)l) { - encodetable = 1; - break; - } - l += BITMAP_WORDS(pf->bbx[i].w) * pf->bbx[i].h; - } - if (!encodetable) { - free(pf->offset); - pf->offset = NULL; - } - - /* determine whether font is fixed-width*/ - for (i = 0; i < pf->size; ++i) { - if (pf->width[i] != maxwidth) { - proportional = 1; - break; - } - } - if (!proportional) { - free(pf->width); - pf->width = NULL; - } - - /* determine if the font needs a bbx table */ - for (i = 0; i < pf->size; ++i) { - if (pf->bbx[i].w != pf->fbbw || pf->bbx[i].h != pf->fbbh || pf->bbx[i].x != pf->fbbx || pf->bbx[i].y != pf->fbby) { - need_bbx = 1; - break; - } - } - if (!need_bbx) { - free(pf->bbx); - pf->bbx = NULL; - } - - /* reallocate bits array to actual bits used*/ - if (ofs < pf->bits_size) { - bitmap_t *tmp = (bitmap_t *)realloc(pf->bits, ofs * sizeof(bitmap_t)); - if (tmp != NULL || ofs == 0) - pf->bits = tmp; - else - error("bdf_read_bitmaps: Error while reallocating memory"); - pf->bits_size = ofs; - } - else { - if (ofs > pf->bits_size) { - warning("Warning: DWIDTH spec > max FONTBOUNDINGBOX"); - if (ofs > pf->bits_size+EXTRA) { - warning("Error: Not enough bits initially allocated"); - return 0; - } - pf->bits_size = ofs; - } - } - - return 1; -} - -/* read the next non-comment line, returns buf or NULL if EOF*/ -// TODO: Can we use SeekableReadStream::readLine instead? -char *bdf_getline(Common::SeekableReadStream &fp, char *buf, int len) { - int c; - char *b; - - for (;;) { - b = buf; - while (!fp.eos()) { - c = fp.readByte(); - if (c == '\r') - continue; - if (c == '\n') - break; - if (b - buf >= (len - 1)) - break; - *b++ = c; - } - *b = '\0'; - if (fp.eos() && b == buf) - return NULL; - if (b != buf && !isprefix(buf, "COMMENT")) - break; - } - return buf; -} - -/* return hex value of buffer */ -bitmap_t bdf_hexval(unsigned char *buf) { - bitmap_t val = 0; - - for (unsigned char *ptr = buf; *ptr; ptr++) { - int c = *ptr; - - if (c >= '0' && c <= '9') - c -= '0'; - else if (c >= 'A' && c <= 'F') - c = c - 'A' + 10; - else if (c >= 'a' && c <= 'f') - c = c - 'a' + 10; - else - c = 0; - val = (val << 4) | c; - } - return val; -} - -NewFont *NewFont::loadFont(Common::SeekableReadStream &stream) { - NewFontData *data = bdf_read_font(stream); - if (!data || stream.err()) { - free_font(data); - return 0; - } - - FontDesc desc; - desc.name = data->name; - desc.maxwidth = data->maxwidth; - desc.height = data->height; - desc.fbbw = data->fbbw; - desc.fbbh = data->fbbh; - desc.fbbx = data->fbbx; - desc.fbby = data->fbby; - desc.ascent = data->ascent; - desc.firstchar = data->firstchar; - desc.size = data->size; - desc.bits = data->bits; - desc.offset = data->offset; - desc.width = data->width; - desc.bbx = data->bbx; - desc.defaultchar = data->defaultchar; - desc.bits_size = data->bits_size; - - return new NewFont(desc, data); -} - -bool NewFont::cacheFontData(const NewFont &font, const Common::String &filename) { - Common::DumpFile cacheFile; - if (!cacheFile.open(filename)) { - warning("Couldn't open file '%s' for writing", filename.c_str()); - return false; - } - - cacheFile.writeUint16BE(font._desc.maxwidth); - cacheFile.writeUint16BE(font._desc.height); - cacheFile.writeUint16BE(font._desc.fbbw); - cacheFile.writeUint16BE(font._desc.fbbh); - cacheFile.writeSint16BE(font._desc.fbbx); - cacheFile.writeSint16BE(font._desc.fbby); - cacheFile.writeUint16BE(font._desc.ascent); - cacheFile.writeUint16BE(font._desc.firstchar); - cacheFile.writeUint16BE(font._desc.size); - cacheFile.writeUint16BE(font._desc.defaultchar); - cacheFile.writeUint32BE(font._desc.bits_size); - - for (long i = 0; i < font._desc.bits_size; ++i) { - cacheFile.writeUint16BE(font._desc.bits[i]); - } - - if (font._desc.offset) { - cacheFile.writeByte(1); - for (int i = 0; i < font._desc.size; ++i) { - cacheFile.writeUint32BE(font._desc.offset[i]); - } - } else { - cacheFile.writeByte(0); - } - - if (font._desc.width) { - cacheFile.writeByte(1); - for (int i = 0; i < font._desc.size; ++i) { - cacheFile.writeByte(font._desc.width[i]); - } - } else { - cacheFile.writeByte(0); - } - - if (font._desc.bbx) { - cacheFile.writeByte(1); - for (int i = 0; i < font._desc.size; ++i) { - cacheFile.writeByte(font._desc.bbx[i].w); - cacheFile.writeByte(font._desc.bbx[i].h); - cacheFile.writeByte(font._desc.bbx[i].x); - cacheFile.writeByte(font._desc.bbx[i].y); - } - } else { - cacheFile.writeByte(0); - } - - return !cacheFile.err(); -} - -NewFont *NewFont::loadFromCache(Common::SeekableReadStream &stream) { - NewFont *font = 0; - - NewFontData *data = (NewFontData *)malloc(sizeof(NewFontData)); - if (!data) - return 0; - - memset(data, 0, sizeof(NewFontData)); - - data->maxwidth = stream.readUint16BE(); - data->height = stream.readUint16BE(); - data->fbbw = stream.readUint16BE(); - data->fbbh = stream.readUint16BE(); - data->fbbx = stream.readSint16BE(); - data->fbby = stream.readSint16BE(); - data->ascent = stream.readUint16BE(); - data->firstchar = stream.readUint16BE(); - data->size = stream.readUint16BE(); - data->defaultchar = stream.readUint16BE(); - data->bits_size = stream.readUint32BE(); - - data->bits = (bitmap_t *)malloc(sizeof(bitmap_t) * data->bits_size); - if (!data->bits) { - free(data); - return 0; - } - - for (long i = 0; i < data->bits_size; ++i) { - data->bits[i] = stream.readUint16BE(); - } - - bool hasOffsetTable = (stream.readByte() != 0); - if (hasOffsetTable) { - data->offset = (unsigned long *)malloc(sizeof(unsigned long) * data->size); - if (!data->offset) { - free(data->bits); - free(data); - return 0; - } - - for (int i = 0; i < data->size; ++i) { - data->offset[i] = stream.readUint32BE(); - } - } - - bool hasWidthTable = (stream.readByte() != 0); - if (hasWidthTable) { - data->width = (unsigned char *)malloc(sizeof(unsigned char) * data->size); - if (!data->width) { - free(data->bits); - free(data->offset); - free(data); - return 0; - } - - for (int i = 0; i < data->size; ++i) { - data->width[i] = stream.readByte(); - } - } - - bool hasBBXTable = (stream.readByte() != 0); - if (hasBBXTable) { - data->bbx = (BBX *)malloc(sizeof(BBX) * data->size); - if (!data->bbx) { - free(data->bits); - free(data->offset); - free(data->width); - free(data); - return 0; - } - - for (int i = 0; i < data->size; ++i) { - data->bbx[i].w = (int8)stream.readByte(); - data->bbx[i].h = (int8)stream.readByte(); - data->bbx[i].x = (int8)stream.readByte(); - data->bbx[i].y = (int8)stream.readByte(); - } - } - - if (stream.err() || stream.eos()) { - free(data->bits); - free(data->offset); - free(data->width); - free(data); - return 0; - } - - FontDesc desc; - desc.name = data->name; - desc.maxwidth = data->maxwidth; - desc.height = data->height; - desc.fbbw = data->fbbw; - desc.fbbh = data->fbbh; - desc.fbbx = data->fbbx; - desc.fbby = data->fbby; - desc.ascent = data->ascent; - desc.firstchar = data->firstchar; - desc.size = data->size; - desc.bits = data->bits; - desc.offset = data->offset; - desc.width = data->width; - desc.bbx = data->bbx; - desc.defaultchar = data->defaultchar; - desc.bits_size = data->bits_size; - - font = new NewFont(desc, data); - if (!font) { - free(data->bits); - free(data->offset); - free(data->width); - free(data); - return 0; - } - - return font; -} - -#pragma mark - - - int Font::getStringWidth(const Common::String &str) const { int space = 0; -- cgit v1.2.3