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#include <mbgl/text/glyph_store.hpp>
#include <mbgl/text/glyph_store_observer.hpp>
#include <mbgl/text/glyph_pbf.hpp>
#include <cassert>
namespace mbgl {
static GlyphStoreObserver nullObserver;
GlyphStore::GlyphStore(FileSource& fileSource_)
: fileSource(fileSource_), observer(&nullObserver) {
}
GlyphStore::~GlyphStore() = default;
void GlyphStore::requestGlyphRange(const FontStack& fontStack, const GlyphRange& range) {
std::lock_guard<std::mutex> lock(rangesMutex);
auto& rangeSets = ranges[fontStack];
const auto& rangeSetsIt = rangeSets.find(range);
if (rangeSetsIt != rangeSets.end()) {
return;
}
rangeSets.emplace(range,
std::make_unique<GlyphPBF>(this, fontStack, range, observer, fileSource));
}
bool GlyphStore::hasGlyphRanges(const FontStack& fontStack, const std::set<GlyphRange>& glyphRanges) {
if (glyphRanges.empty()) {
return true;
}
std::lock_guard<std::mutex> lock(rangesMutex);
const auto& rangeSets = ranges[fontStack];
bool hasRanges = true;
for (const auto& range : glyphRanges) {
const auto& rangeSetsIt = rangeSets.find(range);
if (rangeSetsIt == rangeSets.end()) {
// Push the request to the MapThread, so we can easly cancel
// if it is still pending when we destroy this object.
workQueue.push(std::bind(&GlyphStore::requestGlyphRange, this, fontStack, range));
hasRanges = false;
continue;
}
if (!rangeSetsIt->second->isParsed()) {
hasRanges = false;
}
}
return hasRanges;
}
util::exclusive<GlyphSet> GlyphStore::getGlyphSet(const FontStack& fontStack) {
auto lock = std::make_unique<std::lock_guard<std::mutex>>(glyphSetsMutex);
auto it = glyphSets.find(fontStack);
if (it == glyphSets.end()) {
it = glyphSets.emplace(fontStack, std::make_unique<GlyphSet>()).first;
}
// FIXME: We lock all GlyphSets, but what we should
// really do is lock only the one we are returning.
return { it->second.get(), std::move(lock) };
}
void GlyphStore::setObserver(GlyphStoreObserver* observer_) {
observer = observer_;
}
} // namespace mbgl
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