[node, tests] Consolidate headless rendering logic in HeadlessFrontend

1 files changed, 12 insertions, 2 deletions

diff --git a/platform/default/mbgl/gl/headless_backend.hpp b/platform/default/mbgl/gl/headless_backend.hpp
index 5f39eb9f00..d845e9930c 100644
--- a/platform/default/mbgl/gl/headless_backend.hpp
+++ b/platform/default/mbgl/gl/headless_backend.hpp
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <mbgl/map/view.hpp>
 #include <mbgl/renderer/renderer_backend.hpp>
 
 #include <memory>
@@ -9,13 +10,17 @@ namespace mbgl {
 
 class HeadlessDisplay;
 
-class HeadlessBackend : public RendererBackend {
+class HeadlessBackend : public View, public RendererBackend {
 public:
-    HeadlessBackend();
+    HeadlessBackend(Size = { 256, 256 });
     ~HeadlessBackend() override;
 
+    void bind() override;
     void updateAssumedState() override;
 
+    void setSize(Size);
+    PremultipliedImage readStillImage();
+
     struct Impl {
         virtual ~Impl() = default;
         virtual void activateContext() = 0;
@@ -37,7 +42,12 @@ private:
     std::shared_ptr<HeadlessDisplay> display;
     std::unique_ptr<Impl> impl;
 
+    Size size;
+    float pixelRatio;
     bool active = false;
+
+    class View;
+    std::unique_ptr<View> view;
 };
 
 } // namespace mbgl