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#include <mbgl/map/tile_data.hpp>
#include <mbgl/map/map.hpp>
#include <mbgl/style/style_source.hpp>
#include <mbgl/util/token.hpp>
#include <mbgl/util/string.hpp>
#include <mbgl/storage/file_source.hpp>
#include <mbgl/util/uv_detail.hpp>
using namespace mbgl;
TileData::TileData(Tile::ID const& id_, const SourceInfo& source_)
: id(id_),
name(id),
state(State::initial),
source(source_),
debugBucket(debugFontBuffer) {
// Initialize tile debug coordinates
debugFontBuffer.addText(name.c_str(), 50, 200, 5);
}
TileData::~TileData() {
cancel();
}
const std::string TileData::toString() const {
return std::string { "[tile " } + name + "]";
}
void TileData::request(uv::worker& worker, FileSource& fileSource,
float pixelRatio, std::function<void ()> callback) {
if (source.tiles.empty())
return;
std::string url = source.tiles[(id.x + id.y) % source.tiles.size()];
url = util::replaceTokens(url, [&](const std::string &token) -> std::string {
if (token == "z") return util::toString(id.z);
if (token == "x") return util::toString(id.x);
if (token == "y") return util::toString(id.y);
if (token == "prefix") {
std::string prefix { 2 };
prefix[0] = "0123456789abcdef"[id.x % 16];
prefix[1] = "0123456789abcdef"[id.y % 16];
return prefix;
}
if (token == "ratio") return pixelRatio > 1.0 ? "@2x" : "";
return "";
});
state = State::loading;
// Note: Somehow this feels slower than the change to request_http()
std::weak_ptr<TileData> weak_tile = shared_from_this();
req = fileSource.request(ResourceType::Tile, url);
req->onload([weak_tile, url, callback, &worker](const Response &res) {
util::ptr<TileData> tile = weak_tile.lock();
if (!tile || tile->state == State::obsolete) {
// noop. Tile is obsolete and we're now just waiting for the refcount
// to drop to zero for destruction.
return;
}
// Clear the request object.
tile->req.reset();
if (res.code == 200) {
tile->state = State::loaded;
tile->data = res.data;
// Schedule tile parsing in another thread
tile->reparse(worker, callback);
} else {
#if defined(DEBUG)
fprintf(stderr, "[%s] tile loading failed: %ld, %s\n", url.c_str(), res.code, res.message.c_str());
#endif
}
});
}
void TileData::cancel() {
if (state != State::obsolete) {
state = State::obsolete;
if (req) {
req->cancel();
req.reset();
}
}
}
void TileData::reparse(uv::worker& worker, std::function<void()> callback)
{
// We're creating a new work request. The work request deletes itself after it executed
// the after work handler
new uv::work<util::ptr<TileData>>(
worker,
[](util::ptr<TileData>& tile) {
tile->parse();
},
[callback](util::ptr<TileData>&) {
callback();
},
shared_from_this());
}
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