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#pragma once
#include "indexer/cell_id.hpp"
#include "indexer/data_factory.hpp"
#include "indexer/feature_covering.hpp"
#include "indexer/features_offsets_table.hpp"
#include "indexer/features_vector.hpp"
#include "indexer/mwm_set.hpp"
#include "indexer/scale_index.hpp"
#include "indexer/unique_index.hpp"
#include "coding/file_container.hpp"
#include "defines.hpp"
#include "base/macros.hpp"
#include "base/observer_list.hpp"
#include "std/algorithm.hpp"
#include "std/limits.hpp"
#include "std/utility.hpp"
#include "std/vector.hpp"
class MwmInfoEx : public MwmInfo
{
public:
unique_ptr<feature::FeaturesOffsetsTable> m_table;
};
class MwmValue : public MwmSet::MwmValueBase
{
public:
FilesContainerR const m_cont;
IndexFactory m_factory;
platform::LocalCountryFile const m_file;
feature::FeaturesOffsetsTable const * m_table;
explicit MwmValue(platform::LocalCountryFile const & localFile);
void SetTable(MwmInfoEx & info);
inline feature::DataHeader const & GetHeader() const { return m_factory.GetHeader(); }
inline version::MwmVersion const & GetMwmVersion() const { return m_factory.GetMwmVersion(); }
inline string const & GetCountryFileName() const { return m_file.GetCountryFile().GetNameWithoutExt(); }
};
class Index : public MwmSet
{
protected:
/// @name MwmSet overrides.
//@{
unique_ptr<MwmInfo> CreateInfo(platform::LocalCountryFile const & localFile) const override;
unique_ptr<MwmValueBase> CreateValue(MwmInfo & info) const override;
void OnMwmDeregistered(platform::LocalCountryFile const & localFile) override;
//@}
public:
/// An Observer interface to MwmSet. Note that these functions can
/// be called from *ANY* thread because most signals are sent when
/// some thread releases its MwmHandle, so overrides must be as fast
/// as possible and non-blocking when it's possible.
class Observer
{
public:
virtual ~Observer() = default;
/// Called when a map is registered for a first time and can be
/// used.
virtual void OnMapRegistered(platform::LocalCountryFile const & localFile) {}
/// Called when a map is deregistered and can not be used.
virtual void OnMapDeregistered(platform::LocalCountryFile const & localFile) {}
};
/// Registers a new map.
WARN_UNUSED_RESULT pair<MwmHandle, RegResult> RegisterMap(
platform::LocalCountryFile const & localFile);
/// Deregisters a map from internal records.
///
/// \param countryFile A countryFile denoting a map to be deregistered.
/// \return True if the map was successfully deregistered. If map is locked
/// now, returns false.
bool DeregisterMap(platform::CountryFile const & countryFile);
bool AddObserver(Observer & observer);
bool RemoveObserver(Observer const & observer);
private:
template <typename F> class ReadMWMFunctor
{
F & m_f;
public:
ReadMWMFunctor(F & f) : m_f(f) {}
void operator()(MwmHandle const & handle, covering::CoveringGetter & cov, uint32_t scale) const
{
MwmValue const * pValue = handle.GetValue<MwmValue>();
if (pValue)
{
feature::DataHeader const & header = pValue->GetHeader();
// Prepare needed covering.
uint32_t const lastScale = header.GetLastScale();
// In case of WorldCoasts we should pass correct scale in ForEachInIntervalAndScale.
if (scale > lastScale) scale = lastScale;
// Use last coding scale for covering (see index_builder.cpp).
covering::IntervalsT const & interval = cov.Get(lastScale);
// prepare features reading
FeaturesVector fv(pValue->m_cont, header, pValue->m_table);
ScaleIndex<ModelReaderPtr> index(pValue->m_cont.GetReader(INDEX_FILE_TAG),
pValue->m_factory);
// iterate through intervals
CheckUniqueIndexes checkUnique(header.GetFormat() >= version::v5);
MwmId const mwmID = handle.GetId();
for (auto const & i : interval)
{
index.ForEachInIntervalAndScale([&] (uint32_t index)
{
if (checkUnique(index))
{
FeatureType feature;
fv.GetByIndex(index, feature);
feature.SetID(FeatureID(mwmID, index));
m_f(feature);
}
}, i.first, i.second, scale);
}
}
}
};
template <typename F> class ReadFeatureIndexFunctor
{
F & m_f;
public:
ReadFeatureIndexFunctor(F & f) : m_f(f) {}
void operator()(MwmHandle const & handle, covering::CoveringGetter & cov, uint32_t scale) const
{
MwmValue const * pValue = handle.GetValue<MwmValue>();
if (pValue)
{
feature::DataHeader const & header = pValue->GetHeader();
// Prepare needed covering.
int const lastScale = header.GetLastScale();
// In case of WorldCoasts we should pass correct scale in ForEachInIntervalAndScale.
if (scale > lastScale) scale = lastScale;
// Use last coding scale for covering (see index_builder.cpp).
covering::IntervalsT const & interval = cov.Get(lastScale);
ScaleIndex<ModelReaderPtr> index(pValue->m_cont.GetReader(INDEX_FILE_TAG),
pValue->m_factory);
// iterate through intervals
CheckUniqueIndexes checkUnique(header.GetFormat() >= version::v5);
MwmId const mwmID = handle.GetId();
for (auto const & i : interval)
{
index.ForEachInIntervalAndScale([&] (uint32_t index)
{
if (checkUnique(index))
m_f(FeatureID(mwmID, index));
}, i.first, i.second, scale);
}
}
}
};
public:
template <typename F>
void ForEachInRect(F & f, m2::RectD const & rect, uint32_t scale) const
{
ReadMWMFunctor<F> implFunctor(f);
ForEachInIntervals(implFunctor, covering::ViewportWithLowLevels, rect, scale);
}
template <typename F>
void ForEachInRect_TileDrawing(F & f, m2::RectD const & rect, uint32_t scale) const
{
ReadMWMFunctor<F> implFunctor(f);
ForEachInIntervals(implFunctor, covering::LowLevelsOnly, rect, scale);
}
template <typename F>
void ForEachFeatureIDInRect(F & f, m2::RectD const & rect, uint32_t scale) const
{
ReadFeatureIndexFunctor<F> implFunctor(f);
ForEachInIntervals(implFunctor, covering::LowLevelsOnly, rect, scale);
}
template <typename F>
void ForEachInScale(F & f, uint32_t scale) const
{
ReadMWMFunctor<F> implFunctor(f);
ForEachInIntervals(implFunctor, covering::FullCover, m2::RectD::GetInfiniteRect(), scale);
}
// "features" must be sorted using FeatureID::operator< as predicate
template <typename F>
void ReadFeatures(F & f, vector<FeatureID> const & features) const
{
size_t currentIndex = 0;
while (currentIndex < features.size())
currentIndex = ReadFeatureRange(f, features, currentIndex);
}
/// Guard for loading features from particular MWM by demand.
class FeaturesLoaderGuard
{
public:
FeaturesLoaderGuard(Index const & parent, MwmId id);
inline MwmSet::MwmId GetId() const { return m_handle.GetId(); }
string GetCountryFileName() const;
bool IsWorld() const;
void GetFeatureByIndex(uint32_t index, FeatureType & ft);
private:
MwmHandle m_handle;
FeaturesVector m_vector;
};
template <typename F>
void ForEachInRectForMWM(F & f, m2::RectD const & rect, uint32_t scale, MwmId const id) const
{
MwmHandle const handle = GetMwmHandleById(id);
if (handle.IsAlive())
{
covering::CoveringGetter cov(rect, covering::ViewportWithLowLevels);
ReadMWMFunctor<F> fn(f);
fn(handle, cov, scale);
}
}
private:
// "features" must be sorted using FeatureID::operator< as predicate
template <typename F>
size_t ReadFeatureRange(F & f, vector<FeatureID> const & features, size_t index) const
{
ASSERT_LESS(index, features.size(), ());
size_t result = index;
MwmId id = features[index].m_mwmId;
MwmHandle const handle = GetMwmHandleById(id);
MwmValue const * pValue = handle.GetValue<MwmValue>();
if (pValue)
{
FeaturesVector featureReader(pValue->m_cont, pValue->GetHeader(), pValue->m_table);
while (result < features.size() && id == features[result].m_mwmId)
{
FeatureID const & featureId = features[result];
FeatureType featureType;
featureReader.GetByIndex(featureId.m_index, featureType);
featureType.SetID(featureId);
f(featureType);
++result;
}
}
else
{
// Fake feature identifier which is used to determine the right
// bound of all features in an mwm corresponding to id, because
// it's greater than any other feature in the mwm in accordance
// with FeatureID::operator<().
FeatureID const fakeID(id, numeric_limits<uint32_t>::max());
result = distance(features.cbegin(), upper_bound(features.cbegin(), features.cend(), fakeID));
}
return result;
}
template <typename F>
void ForEachInIntervals(F & f, covering::CoveringMode mode, m2::RectD const & rect,
uint32_t scale) const
{
vector<shared_ptr<MwmInfo>> mwms;
GetMwmsInfo(mwms);
covering::CoveringGetter cov(rect, mode);
MwmId worldID[2];
for (shared_ptr<MwmInfo> const & info : mwms)
{
if (info->m_minScale <= scale && scale <= info->m_maxScale &&
rect.IsIntersect(info->m_limitRect))
{
MwmId id(info);
switch (info->GetType())
{
case MwmInfo::COUNTRY:
{
MwmHandle const handle = GetMwmHandleById(id);
f(handle, cov, scale);
}
break;
case MwmInfo::COASTS:
worldID[0] = id;
break;
case MwmInfo::WORLD:
worldID[1] = id;
break;
}
}
}
if (worldID[0].IsAlive())
{
MwmHandle const handle = GetMwmHandleById(worldID[0]);
f(handle, cov, scale);
}
if (worldID[1].IsAlive())
{
MwmHandle const handle = GetMwmHandleById(worldID[1]);
f(handle, cov, scale);
}
}
my::ObserverList<Observer> m_observers;
};
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