[core] renderer interface

1 files changed, 38 insertions, 0 deletions

diff --git a/platform/default/mbgl/renderer/async_renderer_frontend.cpp b/platform/default/mbgl/renderer/async_renderer_frontend.cpp
new file mode 100644
index 0000000000..37b4e60cf6
--- /dev/null
+++ b/platform/default/mbgl/renderer/async_renderer_frontend.cpp
@@ -0,0 +1,38 @@
+#include "async_renderer_frontend.hpp"
+#include <mbgl/renderer/renderer.hpp>
+
+namespace mbgl {
+
+AsyncRendererFrontend::AsyncRendererFrontend(std::unique_ptr<Renderer> renderer_, View& view_)
+    : renderer(std::move(renderer_))
+    , view(view_)
+    , asyncInvalidate([this] {
+        if (renderer && updateParameters) {
+            renderer->render(view, *updateParameters);
+        }
+    }) {
+}
+
+AsyncRendererFrontend::~AsyncRendererFrontend() = default;
+
+void AsyncRendererFrontend::reset() {
+    assert(renderer);
+    renderer.reset();
+}
+
+void AsyncRendererFrontend::update(std::shared_ptr<UpdateParameters> updateParameters_) {
+    updateParameters = updateParameters_;
+    asyncInvalidate.send();
+}
+
+void AsyncRendererFrontend::setObserver(RendererObserver& observer_) {
+    assert(renderer);
+    renderer->setObserver(&observer_);
+}
+    
+Renderer* AsyncRendererFrontend::getRenderer() {
+    assert(renderer);
+    return renderer.get();
+}
+
+} // namespace mbgl