void readFileList(std::ifstream &stream, std::list<FileInfo> &files, uint32 count) {
int startOffset = count * 20 + 4;
while (count-- > 0) {
FileInfo file;
readFixedString(stream, file.name, 12);
file.size = readUint32BE(stream);
file.offset = readUint32BE(stream) + startOffset;
files.push_back(file);
}
}
std::pair<FontData*, FontAtlas*> FontManager::fetchFontDataAndAtlas(InputSourceRef source)
{
auto in = source->loadDataSource()->createStream(); // CAN THROW
string version;
in->readFixedString(&version, 10);
if (version != "XFONT.003")
{
throw runtime_error("Font: WRONG FORMAT");
}
// ---
int glyphCount;
in->readLittle(&glyphCount);
auto data = new FontData(glyphCount);
in->readLittle(&data->baseSize);
in->readLittle(&data->height);
in->readLittle(&data->ascent);
in->readLittle(&data->descent);
in->readLittle(&data->spaceAdvance);
in->readLittle(&data->strikethroughFactor);
in->readLittle(&data->underlineOffset);
in->readLittle(&data->lineThickness);
int atlasWidth;
int atlasHeight;
int atlasPadding;
int unitMargin;
int unitPadding;
in->readLittle(&atlasWidth);
in->readLittle(&atlasHeight);
in->readLittle(&atlasPadding);
in->readLittle(&unitMargin);
in->readLittle(&unitPadding);
auto atlas = new FontAtlas(atlasWidth, atlasHeight);
for (int i = 0; i < glyphCount; i++)
{
int glyphChar;
int glyphWidth;
int glyphHeight;
int glyphLeftExtent;
int glyphTopExtent;
int glyphAtlasX;
int glyphAtlasY;
in->readLittle(&glyphChar);
data->glyphs[(wchar_t)glyphChar] = i;
in->readLittle(&data->advance[i]);
in->readLittle(&glyphWidth);
in->readLittle(&glyphHeight);
in->readLittle(&glyphLeftExtent);
in->readLittle(&glyphTopExtent);
in->readLittle(&glyphAtlasX);
in->readLittle(&glyphAtlasY);
auto glyphData = new unsigned char[glyphWidth * glyphHeight];
in->readData(glyphData, glyphWidth * glyphHeight);
atlas->addGlyph(glyphData, glyphAtlasX + atlasPadding + unitMargin, glyphAtlasY + atlasPadding + unitMargin, glyphWidth, glyphHeight);
delete[] glyphData;
data->w[i] = glyphWidth + unitPadding * 2;
data->h[i] = glyphHeight + unitPadding * 2;
data->le[i] = glyphLeftExtent - unitPadding;
data->te[i] = glyphTopExtent + unitPadding;
int x = glyphAtlasX + atlasPadding + unitMargin - unitPadding;
int y = glyphAtlasY + atlasPadding + unitMargin - unitPadding;
data->u1[i] = x / (float)atlasWidth;
data->v1[i] = y / (float)atlasHeight;
data->u2[i] = (x + data->w[i]) / (float)atlasWidth;
data->v2[i] = (y + data->h[i]) / (float)atlasHeight;
}
return make_pair(data, atlas);
}
