58 lines
1.2 KiB
C++
58 lines
1.2 KiB
C++
#pragma once
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#include <mbgl/gl/extension.hpp>
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#include <mbgl/map/backend.hpp>
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#include <memory>
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#include <functional>
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namespace mbgl {
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class HeadlessDisplay;
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class HeadlessBackend : public Backend {
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public:
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HeadlessBackend();
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HeadlessBackend(std::shared_ptr<HeadlessDisplay>);
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~HeadlessBackend() override;
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void invalidate() override;
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void activate() override;
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void deactivate() override;
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void notifyMapChange(MapChange) override;
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void setMapChangeCallback(std::function<void(MapChange)>&& cb) { mapChangeCallback = std::move(cb); }
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struct Impl {
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virtual ~Impl() {}
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virtual void activateContext() = 0;
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virtual void deactivateContext() {}
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};
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private:
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// Implementation specific functions
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static gl::glProc initializeExtension(const char*);
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bool hasContext() const { return bool(impl); }
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bool hasDisplay();
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void createContext();
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private:
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void destroyContext();
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void activateContext();
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void deactivateContext();
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std::unique_ptr<Impl> impl;
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std::shared_ptr<HeadlessDisplay> display;
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bool extensionsLoaded = false;
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bool active = false;
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std::function<void(MapChange)> mapChangeCallback;
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};
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} // namespace mbgl
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