void FontContext::fontstashError(void* _uptr, int _error, int _val) {
FontContext* fontContext = static_cast<FontContext*>(_uptr);
switch(_error) {
case FONS_ATLAS_FULL: {
// callback during rasterize ()
fontContext->m_handleAtlasFull = true;
const auto& tex = fontContext->m_atlas;
unsigned int nw = tex->getWidth() * 2;
unsigned int nh = tex->getHeight() * 2;
if (nw > TANGRAM_MAX_TEXTURE_WIDTH || nh > TANGRAM_MAX_TEXTURE_HEIGHT) {
LOGE("Full font texture atlas size reached!");
} else {
std::lock_guard<std::mutex> lock(fontContext->m_atlasMutex);
if (fonsExpandAtlas(fontContext->m_fsContext, nw, nh, 1)) {
tex->resize(nw, nh);
LOGW("Texture Atlas resized to %d %d", nw, nh);
} else {
LOGE("Unexpected error while expanding the font atlas");
}
}
fontContext->m_handleAtlasFull = false;
break;
}
case FONS_SCRATCH_FULL:
case FONS_STATES_OVERFLOW:
case FONS_STATES_UNDERFLOW:
default:
LOGE("Unexpected error in Fontstash %d:%d!", _error, _val);
break;
}
}
static void expandAtlas(struct FONScontext* stash)
{
int w = 0, h = 0;
fonsGetAtlasSize(stash, &w, &h);
if (w < h)
w *= 2;
else
h *= 2;
fonsExpandAtlas(stash, w, h);
printf("expanded atlas to %d x %d\n", w, h);
}