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Diffstat (limited to 'src/mbgl/renderer/source_state.cpp')
-rw-r--r-- | src/mbgl/renderer/source_state.cpp | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/mbgl/renderer/source_state.cpp b/src/mbgl/renderer/source_state.cpp new file mode 100644 index 0000000000..d057c211b5 --- /dev/null +++ b/src/mbgl/renderer/source_state.cpp @@ -0,0 +1,132 @@ +#include <mbgl/renderer/render_tile.hpp> +#include <mbgl/renderer/source_state.hpp> +#include <mbgl/style/conversion_impl.hpp> +#include <mbgl/util/logging.hpp> + +namespace mbgl { + +void SourceFeatureState::updateState(const optional<std::string>& sourceLayerID, const std::string& featureID, + const FeatureState& newState) { + std::string sourceLayer = sourceLayerID.value_or(std::string()); + for (const auto& state : newState) { + auto& layerStates = stateChanges[sourceLayer]; + auto& featureStates = layerStates[featureID]; + featureStates[state.first] = state.second; + } +} + +void SourceFeatureState::getState(FeatureState& result, const optional<std::string>& sourceLayerID, + const std::string& featureID) const { + std::string sourceLayer = sourceLayerID.value_or(std::string()); + FeatureState current; + FeatureState changes; + auto layerStates = currentStates.find(sourceLayer); + if (layerStates != currentStates.end()) { + const auto currentStateEntry = layerStates->second.find(featureID); + if (currentStateEntry != layerStates->second.end()) { + current = currentStateEntry->second; + } + } + + layerStates = stateChanges.find(sourceLayer); + if (layerStates != stateChanges.end()) { + const auto stateChangesEntry = layerStates->second.find(featureID); + if (stateChangesEntry != layerStates->second.end()) { + changes = stateChangesEntry->second; + } + } + result = std::move(changes); + result.insert(current.begin(), current.end()); +} + +void SourceFeatureState::coalesceChanges(std::vector<RenderTile>& tiles) { + LayerFeatureStates changes; + for (const auto& layerStatesEntry : stateChanges) { + const auto& sourceLayer = layerStatesEntry.first; + FeatureStates layerStates; + for (const auto& featureStatesEntry : stateChanges[sourceLayer]) { + const auto& featureID = featureStatesEntry.first; + for (const auto& stateEntry : stateChanges[sourceLayer][featureID]) { + const auto& stateKey = stateEntry.first; + const auto& stateVal = stateEntry.second; + + auto currentState = currentStates[sourceLayer][featureID].find(stateKey); + if (currentState != currentStates[sourceLayer][featureID].end()) { + currentState->second = stateVal; + } else { + currentStates[sourceLayer][featureID].insert(std::make_pair(stateKey, stateVal)); + } + } + layerStates[featureID] = currentStates[sourceLayer][featureID]; + } + changes[sourceLayer] = std::move(layerStates); + } + + for (const auto& layerStatesEntry : deletedStates) { + const auto& sourceLayer = layerStatesEntry.first; + FeatureStates layerStates = {{}, {}}; + + if (deletedStates[sourceLayer].empty()) { + for (const auto& featureStatesEntry : currentStates[sourceLayer]) { + const auto& featureID = featureStatesEntry.first; + layerStates[featureID] = {}; + currentStates[sourceLayer][featureID] = {}; + } + } else { + for (const auto& feature : deletedStates[sourceLayer]) { + const auto& featureID = feature.first; + bool deleteWholeFeatureState = deletedStates[sourceLayer][featureID].empty(); + if (deleteWholeFeatureState) { + currentStates[sourceLayer][featureID] = {}; + } else { + for (const auto& stateEntry : deletedStates[sourceLayer][featureID]) { + currentStates[sourceLayer][featureID].erase(stateEntry.first); + } + } + layerStates[featureID] = currentStates[sourceLayer][featureID]; + } + } + changes[sourceLayer] = std::move(layerStates); + } + + stateChanges.clear(); + deletedStates.clear(); + + if (changes.empty()) { + return; + } + + for (auto& tile : tiles) { + tile.setFeatureState(changes); + } +} + +void SourceFeatureState::removeState(const optional<std::string>& sourceLayerID, const optional<std::string>& featureID, + const optional<std::string>& stateKey) { + std::string sourceLayer = sourceLayerID.value_or(std::string()); + + bool sourceLayerDeleted = (deletedStates.count(sourceLayer) > 0) && deletedStates[sourceLayer].empty(); + if (sourceLayerDeleted) { + return; + } + + if (stateKey && featureID) { + if ((deletedStates.count(sourceLayer) == 0) && (deletedStates[sourceLayer].count(*featureID)) == 0) { + deletedStates[sourceLayer][*featureID][*stateKey] = {}; + } + } else if (featureID) { + bool updateInQueue = + (stateChanges.count(sourceLayer) != 0U) && (stateChanges[sourceLayer].count(*featureID) != 0U); + if (updateInQueue) { + for (const auto& changeEntry : stateChanges[sourceLayer][*featureID]) { + deletedStates[sourceLayer][*featureID][changeEntry.first] = {}; + } + } else { + deletedStates[sourceLayer][*featureID] = {}; + } + } else { + deletedStates[sourceLayer] = {}; + } +} + +} // namespace mbgl |