refs #893 #992: point annotations API

src/mbgl/map/live_tile_data.cpp

@@ -0,0 +1,67 @@
+#include <mbgl/map/annotation.hpp>
+#include <mbgl/map/live_tile_data.hpp>
+#include <mbgl/map/tile_parser.hpp>
+#include <mbgl/style/style_source.hpp>
+#include <mbgl/map/vector_tile.hpp>
+#include <mbgl/platform/log.hpp>
+
+using namespace mbgl;
+
+LiveTileData::LiveTileData(Tile::ID const& id_,
+                           util::ptr<AnnotationManager> annotationManager_,
+                           float mapMaxZoom,
+                           util::ptr<Style> style_,
+                           GlyphAtlas& glyphAtlas_,
+                           GlyphStore& glyphStore_,
+                           SpriteAtlas& spriteAtlas_,
+                           util::ptr<Sprite> sprite_,
+                           const SourceInfo& source_,
+                           Environment& env_)
+    : VectorTileData::VectorTileData(id_, mapMaxZoom, style_, glyphAtlas_, glyphStore_,
+                                     spriteAtlas_, sprite_, source_, env_),
+      annotationManager(annotationManager_) {
+    // live features are always ready
+    state = State::loaded;
+}
+
+LiveTileData::~LiveTileData() {}
+
+void LiveTileData::parse() {
+    if (state != State::loaded) {
+        return;
+    }
+
+    try {
+        if (!style) {
+            throw std::runtime_error("style isn't present in LiveTileData object anymore");
+        }
+
+        if (source.type == SourceType::Annotations) {
+            const std::unique_ptr<LiveTile>& tile = annotationManager->getTile(id);
+
+            if (tile) {
+                // Parsing creates state that is encapsulated in TileParser. While parsing,
+                // the TileParser object writes results into this objects. All other state
+                // is going to be discarded afterwards.
+                TileParser parser(*tile, *this, style, glyphAtlas, glyphStore, spriteAtlas, sprite);
+
+                // Clear the style so that we don't have a cycle in the shared_ptr references.
+                style.reset();
+
+                parser.parse();
+            } else {
+                state = State::obsolete;
+            }
+        } else {
+            throw std::runtime_error("unknown live tile source type");
+        }
+    } catch (const std::exception& ex) {
+        Log::Error(Event::ParseTile, "Live-parsing [%d/%d/%d] failed: %s", id.z, id.x, id.y, ex.what());
+        state = State::obsolete;
+        return;
+    }
+
+    if (state != State::obsolete) {
+        state = State::parsed;
+    }
+}