void sdl_font_info::_unload()
{
// Look for font in list of loaded fonts
font_list_t::const_iterator i = font_list.begin(), end = font_list.end();
while (i != end) {
if (i->second == this) {
// Found, decrement reference counter and delete
ref_count--;
if (ref_count <= 0) {
delete this; // !
font_list.erase(i->first);
return;
}
}
i++;
}
}
void sdl_font_info::_unload()
{
// Look for font in list of loaded fonts
font_list_t::const_iterator i = font_list.begin(), end = font_list.end();
while (i != end) {
if (i->second == this) {
// Found, decrement reference counter and delete
ref_count--;
if (ref_count <= 0) {
delete this; // !
font_list.erase(i->first);
return;
}
}
i++;
}
// if (!found) {
#ifdef HAVE_SDL_TTF
// use our own built-in font
// fix_missing_overhead_map_fonts();
// fix_missing_interface_fonts();
#else
logFatal("Can't open font resource file");
/*
vector<DirectorySpecifier>::const_iterator i = data_search_path.begin(), end = data_search_path.end();
while (i != end) {
FileSpecifier fonts = *i + "Fonts";
fdprintf(fonts.GetPath());
i++;
}
*/
exit(1);
#endif
// }
}
sdl_font_info *load_sdl_font(const TextSpec &spec)
{
sdl_font_info *info = NULL;
// Look for ID/size in list of loaded fonts
id_and_size_t id_and_size(spec.font, spec.size);
font_list_t::const_iterator it = font_list.find(id_and_size);
if (it != font_list.end()) { // already loaded
info = it->second;
info->ref_count++;
return info;
}
// Load font family resource
LoadedResource fond;
if (!get_resource(FOUR_CHARS_TO_INT('F', 'O', 'N', 'D'), spec.font, fond)) {
fprintf(stderr, "Font family resource for font ID %d not found\n", spec.font);
return NULL;
}
SDL_RWops *p = SDL_RWFromMem(fond.GetPointer(), (int)fond.GetLength());
assert(p);
// Look for font size in association table
SDL_RWseek(p, 52, SEEK_SET);
int num_assoc = SDL_ReadBE16(p) + 1;
while (num_assoc--) {
int size = SDL_ReadBE16(p);
SDL_ReadBE16(p); // skip style
int id = SDL_ReadBE16(p);
if (size == spec.size) {
// Size found, load bitmap font resource
info = new sdl_font_info;
if (!get_resource(FOUR_CHARS_TO_INT('N', 'F', 'N', 'T'), id, info->rsrc))
get_resource(FOUR_CHARS_TO_INT('F', 'O', 'N', 'T'), id, info->rsrc);
if (info->rsrc.IsLoaded()) {
// Found, switch stream to font resource
SDL_RWclose(p);
p = SDL_RWFromMem(info->rsrc.GetPointer(), (int)info->rsrc.GetLength());
assert(p);
void *font_ptr = info->rsrc.GetPointer(true);
// Read font information
SDL_RWseek(p, 2, SEEK_CUR);
info->first_character = static_cast<uint8>(SDL_ReadBE16(p));
info->last_character = static_cast<uint8>(SDL_ReadBE16(p));
SDL_RWseek(p, 2, SEEK_CUR);
info->maximum_kerning = SDL_ReadBE16(p);
SDL_RWseek(p, 2, SEEK_CUR);
info->rect_width = SDL_ReadBE16(p);
info->rect_height = SDL_ReadBE16(p);
SDL_RWseek(p, 2, SEEK_CUR);
info->ascent = SDL_ReadBE16(p);
info->descent = SDL_ReadBE16(p);
info->leading = SDL_ReadBE16(p);
int bytes_per_row = SDL_ReadBE16(p) * 2;
//printf(" first %d, last %d, max_kern %d, rect_w %d, rect_h %d, ascent %d, descent %d, leading %d, bytes_per_row %d\n",
// info->first_character, info->last_character, info->maximum_kerning,
// info->rect_width, info->rect_height, info->ascent, info->descent, info->leading, bytes_per_row);
// Convert bitmap to pixmap (1 byte/pixel)
info->bytes_per_row = bytes_per_row * 8;
uint8 *src = (uint8 *)font_ptr + SDL_RWtell(p);
uint8 *dst = info->pixmap = (uint8 *)malloc(info->rect_height * info->bytes_per_row);
assert(dst);
for (int y=0; y<info->rect_height; y++) {
for (int x=0; x<bytes_per_row; x++) {
uint8 b = *src++;
*dst++ = (b & 0x80) ? 0xff : 0x00;
*dst++ = (b & 0x40) ? 0xff : 0x00;
*dst++ = (b & 0x20) ? 0xff : 0x00;
*dst++ = (b & 0x10) ? 0xff : 0x00;
*dst++ = (b & 0x08) ? 0xff : 0x00;
*dst++ = (b & 0x04) ? 0xff : 0x00;
*dst++ = (b & 0x02) ? 0xff : 0x00;
*dst++ = (b & 0x01) ? 0xff : 0x00;
}
}
SDL_RWseek(p, info->rect_height * bytes_per_row, SEEK_CUR);
// Set table pointers
int table_size = info->last_character - info->first_character + 3; // Tables contain 2 additional entries
info->location_table = (uint16 *)((uint8 *)font_ptr + SDL_RWtell(p));
byte_swap_memory(info->location_table, _2byte, table_size);
SDL_RWseek(p, table_size * 2, SEEK_CUR);
info->width_table = (int8 *)font_ptr + SDL_RWtell(p);
// Add font information to list of known fonts
info->ref_count++;
font_list[id_and_size] = info;
} else {
delete info;
info = NULL;
fprintf(stderr, "Bitmap font resource ID %d not found\n", id);
}
}
}
// Free resources
SDL_RWclose(p);
return info;
}
