diff options
Diffstat (limited to 'lib/font.cc')
| -rw-r--r-- | lib/font.cc | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/lib/font.cc b/lib/font.cc new file mode 100644 index 0000000..7cc57f6 --- /dev/null +++ b/lib/font.cc @@ -0,0 +1,318 @@ +#include <stdarg.h> +#include "base.h" +#include "font.h" +#include "Input.h" +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +Uint8 prescale2[4] = { 0, 85, 170, 255 }, prescale3[8] = { 0, 36, 72, 109, 145, 182, 218, 255 }; + +#define STRBUFSIZ 512 + +/* + +font file format +================ + +off|siz|description +---+---+------------------------------- + 0 | 2 | Number of entries = nbentries + 2 | 1 | Flags + 3 | 1 | maxX (maximum width) + 4 | 1 | maxY (maximum height) + 5 | 1 | base (bottom line from top) + 6 | 1 | inter (size of the interline) + 7 | X | char entries +7+X| Y | char map + +X = (maxX * maxY + 1) * nbentries +Y = nbentries * 4 + + +Flags: +===== + +0000000R + +R = RGBA (=1) or Alpha (=0) + +RGBA in 1232 format: +ABBGGGRR + + +Each entries: +============ + +off|siz|description +---+---+------------------------------- + 0 | 1 | True size of the entry + 1 | Z | Datas + +Z = maxX * maxY +Datas are stored in order X first, then Y. + +Char map: +======== + +nbentries entries, each entry = 4 bytes = 2 uint16 + +off|siz|description +---+---+------------------------------- + 0 | 2 | Unicode (?) + 2 | 2 | Corresponding char entry + +I'm not sure about my word 'Unicode'. I write this only to say it's an attempt +to make the fonts "internationals". If the "unicode" is < 255, then it should +match only one byte in the string. Otherwise, it should match two bytes. + + +Variables comments +================== + +nbcU = number of chars on X by texture +nbcV = number of chars on Y by texture +nbcT = number of char by texture +nbT = number of textures + +*/ + +mogltk::font::font(Handle * ffont) : textcolor(255, 255, 255, 255), shadow(0), wspace(0) { + int i; + + nbentries = ffont->readU16(); + flags = ffont->readU8(); + maxX = ffont->readU8(); + maxY = ffont->readU8(); + base = ffont->readU8(); + inter = ffont->readU8(); + + nbcU = 256 / maxX; + nbcV = 256 / maxY; + + nbcT = nbcU * nbcV; + + nbT = nbentries / nbcT; + + if (nbentries % nbcT) { + nbT++; + } + + printm(M_INFO, "Creating font texture: %i entries, flags = 0x%02x, maxX = %i, maxY = %i\n", nbentries, flags, maxX, maxY); + printm(M_INFO, "Which makes %i texture(s), with %i char by texture, %i on X, and %i on Y\n", nbT, nbcT, nbcU, nbcV); + + fonttex = (texture **) malloc(nbT * sizeof(texture *)); + + for (i = 0; i < nbT; i++) { + fonttex[i] = new texture(256, 256, true); + } + + sizes = (Uint8 *) malloc(nbentries * sizeof(Uint8)); + + Uint8 * curtex = (Uint8 *) fonttex[0]->GetSurface()->pixels; + Uint32 curU = 0, curV = 0, curT = 0; + for (i = 0; i < nbentries; i++) { + sizes[i] = ffont->readU8(); + for (int v = 0; v < maxY; v++) { + for (int u = 0; u < maxX; u++) { + Uint8 f; + f = ffont->readU8(); + if (flags & 1) { + Uint8 r, g, b, a; + r = f & 3; + g = (f >> 2) & 7; + b = (f >> 5) & 3; + a = (f >> 7) & 1; + curtex[(curU + u + (curV + v) * 256) * 4 + 0] = prescale2[r]; + curtex[(curU + u + (curV + v) * 256) * 4 + 1] = prescale3[g]; + curtex[(curU + u + (curV + v) * 256) * 4 + 2] = prescale2[b]; + curtex[(curU + u + (curV + v) * 256) * 4 + 3] = a ? 255 : 0; + } else { + curtex[(curU + u + (curV + v) * 256) * 4 + 0] = 255; + curtex[(curU + u + (curV + v) * 256) * 4 + 1] = 255; + curtex[(curU + u + (curV + v) * 256) * 4 + 2] = 255; + curtex[(curU + u + (curV + v) * 256) * 4 + 3] = f; + } + } + } + if (((curU += maxX) + maxX) > 256) { + curU = 0; + if (((curV += maxY) + maxY) > 256) { + curV = 0; + if ((curT + 1) != nbT) + curtex = (Uint8 *) fonttex[++curT]->GetSurface()->pixels; + } + } + } + + corresp = (Uint16 *) malloc(nbentries * 2 * sizeof(Uint16)); + + for (i = 0; i < 2 * nbentries; i++) { + corresp[i] = ffont->readU16(); + } +} + +mogltk::font::~font() { + int i; + for (i = 0; i < nbT; i++) { + delete fonttex[i]; + } + + free((void *&) fonttex); + free(sizes); +} + +void mogltk::font::drawentry(Uint16 entry, int x, int y, ColorP c) { + bool was2D; + int trueentry, cx, cy, px, py; + + return; + + was2D = mogltk::glbase::is2D(); + + if (!was2D) + mogltk::glbase::Enter2DMode(); + + if (shadow) { + int os = shadow; + shadow = 0; + + drawentry(entry, x + os, y + os, BLACK); + + shadow = os; + } + + y -= base; + + Bind(entry / nbcT); + c.Bind(); + trueentry = entry % nbcT; + cx = trueentry % nbcU; + cy = trueentry / nbcU; + px = cx * maxX; + py = cy * maxY; + + glBegin(GL_TRIANGLE_STRIP); + glTexCoord2i(px , py ); glVertex2i(x , y ); + glTexCoord2i(px + maxX - 1, py ); glVertex2i(x + maxX - 1, y ); + glTexCoord2i(px , py + maxY - 1); glVertex2i(x , y + maxY - 1); + glTexCoord2i(px + maxX - 1, py + maxY - 1); glVertex2i(x + maxX - 1, y + maxY - 1); + glEnd(); + + if (!was2D) + mogltk::glbase::Leave2DMode(); +} + +void mogltk::font::putcursor(int x, int y) { + cx = ox = x; + cy = y; +} + +void mogltk::font::putentry(Uint16 entry, ColorP c) { + drawentry(entry, cx, cy, c); + cx += sizes[entry] + wspace; +} + +void mogltk::font::putchar(char ch, ColorP c) { + Uint16 * p; + int i; + + for (i = 0, p = corresp; i < nbentries; i++, p++) { + if (*(p++) == ch) { + putentry(*p, c); + return; + } + } +} + +int mogltk::font::getchar(char ch) const { + Uint16 * p; + int i; + + for (i = 0, p = corresp; i < nbentries; i++, p++) { + if (*(p++) == ch) { + return *p; + } + } + + return -1; +} + +void mogltk::font::newline(void) { + cx = ox; + cy += inter; +} + +int mogltk::font::printf(const ugly_string & m, va_list ap) { + char * p; + static char buffer[STRBUFSIZ + 1]; + int r; + +#ifdef HAVE_VSNPRINTF + r = vsnprintf(buffer, STRBUFSIZ, m.p, ap); +#else + r = vsprintf(buffer, m.p, ap); +#endif + + for (p = buffer; *p; p++) { + if (*p == '\n') { + newline(); + } else { + putchar(*p, textcolor); + } + } + + return r; +} + +int mogltk::font::printf(const ugly_string & m, ...) { + va_list ap; + int r; + + va_start(ap, m); + r = printf(m, ap); + va_end(ap); + + return r; +} + +int mogltk::font::printf(const char * p, ...) { + ugly_string m; + va_list ap; + int r; + + m.p = p; + + va_start(ap, p); + r = printf(m, ap); + va_end(ap); + + return r; +} + +void mogltk::font::setcolor(ColorP c) { + textcolor = c; +} + +void mogltk::font::setshadow(int s) { + shadow = s; +} + +void mogltk::font::setwspace(int w) { + wspace = w; +} + +int mogltk::font::singletextsize(const String & s) const { + unsigned int i; + int r = 0; + + for (i = 0; i < s.strlen(); i++) { + r += sizes[getchar(s[i])]; + } + + return r; +} + +mogltk::font * mogltk::SystemFont; + + |