1 files changed, 40 insertions, 0 deletions
diff --git a/src/mbgl/sprite/sprite_image_collection.cpp b/src/mbgl/sprite/sprite_image_collection.cpp
new file mode 100644
index 0000000000..787ba83db2
--- /dev/null
+++ b/src/mbgl/sprite/sprite_image_collection.cpp
@@ -0,0 +1,40 @@
+#include <mbgl/sprite/sprite_image_collection.hpp>
+#include <mbgl/util/logging.hpp>
+
+namespace mbgl {
+
+void addSpriteImage(Images& images, const std::string& id,
+                           std::unique_ptr<style::Image> image_,
+                           std::function<void (style::Image&)> onAdded) {
+
+    auto it = images.find(id);
+    if (it == images.end()) {
+        // Add new
+        it = images.emplace(id, std::move(image_)).first;
+        onAdded(*it->second.get());
+        return;
+    }
+
+    std::unique_ptr<style::Image>& image = it->second;
+
+    // There is already a sprite with that name in our store.
+    if (image->getImage().size != image_->getImage().size) {
+        Log::Warning(Event::Sprite, "Can't change sprite dimensions for '%s'", id.c_str());
+    }
+
+    // Update existing
+    image = std::move(image_);
+    onAdded(*it->second.get());
+}
+
+void removeSpriteImage(Images& images,
+                              const std::string& id,
+                              std::function<void ()> onRemoved) {
+    if (images.erase(id) > 0) {
+        onRemoved();
+    }
+}
+
+
+
+} // namespace mbgl