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#pragma once
#include <mbgl/renderer/renderer_backend.hpp>
#include <memory>
#include <functional>
namespace mbgl {
class HeadlessBackend : public RendererBackend {
public:
HeadlessBackend(Size = { 256, 256 });
~HeadlessBackend() override;
void bind() override;
Size getFramebufferSize() const override;
void updateAssumedState() override;
void setSize(Size);
PremultipliedImage readStillImage();
class Impl {
public:
virtual ~Impl() = default;
virtual gl::ProcAddress getExtensionFunctionPointer(const char*) = 0;
virtual void activateContext() = 0;
virtual void deactivateContext() {}
};
private:
// Implementation specific functions
gl::ProcAddress getExtensionFunctionPointer(const char*) override;
void activate() override;
void deactivate() override;
void createImpl();
private:
std::unique_ptr<Impl> impl;
Size size;
float pixelRatio;
bool active = false;
class View;
std::unique_ptr<View> view;
};
} // namespace mbgl
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