87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
#include <mbgl/map/tile_data.hpp>
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#include <mbgl/map/map.hpp>
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#include <mbgl/util/token.hpp>
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#include <mbgl/util/string.hpp>
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using namespace mbgl;
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TileData::TileData(Tile::ID id, Map &map, const SourceInfo &source)
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: id(id),
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state(State::initial),
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map(map),
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source(source),
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url(util::replaceTokens(source.url, [&](const std::string &token) -> std::string {
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if (token == "z") return std::to_string(id.z);
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if (token == "x") return std::to_string(id.x);
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if (token == "y") return std::to_string(id.y);
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if (token == "ratio") return (map.getState().getPixelRatio() > 1.0 ? "@2x" : "");
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return "";
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})),
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debugBucket(debugFontBuffer) {
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// Initialize tile debug coordinates
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const std::string str = util::sprintf<32>("%d/%d/%d", id.z, id.x, id.y);
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debugFontBuffer.addText(str.c_str(), 50, 200, 5);
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}
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TileData::~TileData() {
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cancel();
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}
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const std::string TileData::toString() const {
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return util::sprintf<32>("[tile %d/%d/%d]", id.z, id.x, id.y);
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}
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void TileData::request() {
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state = State::loading;
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// Note: Somehow this feels slower than the change to request_http()
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std::weak_ptr<TileData> weak_tile = shared_from_this();
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req = platform::request_http(url, [weak_tile](platform::Response *res) {
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std::shared_ptr<TileData> tile = weak_tile.lock();
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if (!tile || tile->state == State::obsolete) {
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// noop. Tile is obsolete and we're now just waiting for the refcount
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// to drop to zero for destruction.
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} else if (res->code == 200) {
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tile->state = State::loaded;
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tile->data.swap(res->body);
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// Schedule tile parsing in another thread
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tile->reparse();
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} else {
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#if defined(DEBUG)
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fprintf(stderr, "[%s] tile loading failed: %d, %s\n", tile->url.c_str(), res->code, res->error_message.c_str());
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#endif
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}
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}, map.getLoop());
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}
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void TileData::cancel() {
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if (state != State::obsolete) {
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state = State::obsolete;
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platform::cancel_request_http(req.lock());
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}
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}
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void TileData::beforeParse() {}
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void TileData::reparse() {
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beforeParse();
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// We're creating a new work request. The work request deletes itself after it executed
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// the after work handler
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new uv::work<std::shared_ptr<TileData>>(
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map.getLoop(),
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[](std::shared_ptr<TileData> &tile) {
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tile->parse();
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},
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[](std::shared_ptr<TileData> &tile) {
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tile->afterParse();
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tile->map.update();
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},
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shared_from_this());
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}
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void TileData::afterParse() {}
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