1 files changed, 104 insertions, 0 deletions
diff --git a/src/mbgl/map/tile_data.cpp b/src/mbgl/map/tile_data.cpp
new file mode 100644
index 0000000000..f89ff15baf
--- /dev/null
+++ b/src/mbgl/map/tile_data.cpp
@@ -0,0 +1,104 @@
+#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 Tile is obsolete and we're now just waiting for the refcount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());
+}