[core] simplify dependency layout process and refactor data structures

1 files changed, 36 insertions, 0 deletions

diff --git a/src/mbgl/layout/layout.hpp b/src/mbgl/layout/layout.hpp
new file mode 100644
index 0000000000..de2d28728f
--- /dev/null
+++ b/src/mbgl/layout/layout.hpp
@@ -0,0 +1,36 @@
+#pragma once
+
+#include <mbgl/style/layer_type.hpp>
+#include <mbgl/renderer/image_atlas.hpp>
+#include <mbgl/text/glyph_atlas.hpp>
+#include <memory>
+
+namespace mbgl {
+
+class Bucket;
+class BucketParameters;
+class RenderLayer;
+class FeatureIndex;
+
+class Layout {
+public:
+    Layout() = default;
+    virtual ~Layout() = default;
+
+    virtual void createBucket(const ImagePositions&,
+                              std::unique_ptr<FeatureIndex>&,
+                              std::unordered_map<std::string, std::shared_ptr<Bucket>>&,
+                              const bool,
+                              const bool) = 0;
+
+    virtual void prepareSymbols(const GlyphMap&, const GlyphPositions&,
+                                const ImageMap&, const ImagePositions&) {};
+
+    virtual bool hasSymbolInstances() const {
+        return true;
+    };
+    
+    virtual bool hasDependencies() const = 0;
+};
+
+} // namespace mbgl