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e3e4a1985a
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119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
#include "drape_frontend/tile_info.hpp"
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#include "drape_frontend/drape_measurer.hpp"
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#include "drape_frontend/engine_context.hpp"
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#include "drape_frontend/map_data_provider.hpp"
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#include "drape_frontend/metaline_manager.hpp"
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#include "drape_frontend/rule_drawer.hpp"
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#include "drape_frontend/stylist.hpp"
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#include "indexer/scales.hpp"
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#include "platform/preferred_languages.hpp"
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#include "platform/settings.hpp"
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#include "base/scope_guard.hpp"
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#include "base/logging.hpp"
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#include <algorithm>
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#include <functional>
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using namespace std::placeholders;
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namespace df
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{
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TileInfo::TileInfo(drape_ptr<EngineContext> && engineContext)
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: m_context(std::move(engineContext))
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, m_isCanceled(false)
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{}
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m2::RectD TileInfo::GetGlobalRect() const
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{
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return GetTileKey().GetGlobalRect();
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}
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void TileInfo::ReadFeatureIndex(MapDataProvider const & model)
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{
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if (!DoNeedReadIndex())
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return;
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ThrowIfCancelled();
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size_t const kAverageFeaturesCount = 256;
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m_featureInfo.reserve(kAverageFeaturesCount);
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MwmSet::MwmId lastMwm;
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model.ReadFeaturesID([this, &lastMwm](FeatureID const & id)
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{
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if (m_mwms.empty() || lastMwm != id.m_mwmId)
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{
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auto result = m_mwms.insert(id.m_mwmId);
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VERIFY(result.second, ());
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lastMwm = id.m_mwmId;
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}
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m_featureInfo.push_back(id);
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}, GetGlobalRect(), GetZoomLevel());
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}
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void TileInfo::ReadFeatures(MapDataProvider const & model)
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{
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#if defined(DRAPE_MEASURER_BENCHMARK) && defined(TILES_STATISTIC)
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DrapeMeasurer::Instance().StartTileReading();
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#endif
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m_context->BeginReadTile();
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// Reading can be interrupted by exception throwing
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SCOPE_GUARD(ReleaseReadTile, std::bind(&EngineContext::EndReadTile, m_context.get()));
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ReadFeatureIndex(model);
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ThrowIfCancelled();
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m_context->GetMetalineManager()->Update(m_mwms);
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if (!m_featureInfo.empty())
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{
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std::sort(m_featureInfo.begin(), m_featureInfo.end());
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RuleDrawer drawer(std::bind(&TileInfo::IsCancelled, this), model.m_isCountryLoadedByName,
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make_ref(m_context), m_context->GetMapLangIndex());
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model.ReadFeatures(std::bind<void>(std::ref(drawer), _1), m_featureInfo);
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#ifdef DRAW_TILE_NET
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drawer.DrawTileNet();
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#endif
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}
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#if defined(DRAPE_MEASURER_BENCHMARK) && defined(TILES_STATISTIC)
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DrapeMeasurer::Instance().EndTileReading();
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#endif
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}
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void TileInfo::Cancel()
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{
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m_isCanceled = true;
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}
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/*
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* TODO: the following check throws an exception while IsCancelled() is used in most places to quit gracefully.
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* Looks like the latter was added later, so maybe the throwing version is not needed anymore.
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*/
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void TileInfo::ThrowIfCancelled() const
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{
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// The exception is handled in ReadMWMTask::Do().
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if (m_isCanceled)
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MYTHROW(ReadCanceledException, ());
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}
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bool TileInfo::IsCancelled() const
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{
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return m_isCanceled;
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}
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bool TileInfo::DoNeedReadIndex() const
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{
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return m_featureInfo.empty();
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}
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int TileInfo::GetZoomLevel() const
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{
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return ClipTileZoomByMaxDataZoom(m_context->GetTileKey().m_zoomLevel);
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}
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} // namespace df
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