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#include <mbgl/text/glyph_store.hpp>
#include <mbgl/text/glyph_pbf.hpp>
#include <mbgl/util/thread_context.hpp>
#include <cassert>
namespace mbgl {
GlyphStore::GlyphStore() = default;
GlyphStore::~GlyphStore() = default;
void GlyphStore::requestGlyphRange(const std::string& fontStackName, const GlyphRange& range) {
assert(util::ThreadContext::currentlyOn(util::ThreadType::Map));
std::lock_guard<std::mutex> lock(rangesMutex);
auto& rangeSets = ranges[fontStackName];
const auto& rangeSetsIt = rangeSets.find(range);
if (rangeSetsIt != rangeSets.end()) {
return;
}
rangeSets.emplace(range,
std::make_unique<GlyphPBF>(this, fontStackName, range, observer));
}
bool GlyphStore::hasGlyphRanges(const std::string& fontStackName, const std::set<GlyphRange>& glyphRanges) {
if (glyphRanges.empty()) {
return true;
}
std::lock_guard<std::mutex> lock(rangesMutex);
const auto& rangeSets = ranges[fontStackName];
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, fontStackName, range));
hasRanges = false;
continue;
}
if (!rangeSetsIt->second->isParsed()) {
hasRanges = false;
}
}
return hasRanges;
}
util::exclusive<FontStack> GlyphStore::getFontStack(const std::string& fontStack) {
auto lock = std::make_unique<std::lock_guard<std::mutex>>(stacksMutex);
auto it = stacks.find(fontStack);
if (it == stacks.end()) {
it = stacks.emplace(fontStack, std::make_unique<FontStack>()).first;
}
// FIXME: We lock all FontStacks, but what we should
// really do is lock only the one we are returning.
return { it->second.get(), std::move(lock) };
}
void GlyphStore::setObserver(Observer* observer_) {
observer = observer_;
}
} // namespace mbgl
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