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#pragma once
#include <mbgl/gfx/headless_backend.hpp>
#include <mbgl/gfx/rendering_stats.hpp>
#include <mbgl/map/camera.hpp>
#include <mbgl/renderer/renderer_frontend.hpp>
#include <mbgl/util/async_task.hpp>
#include <mbgl/util/optional.hpp>
#include <atomic>
#include <memory>
namespace mbgl {
class Renderer;
class Map;
class TransformState;
class HeadlessFrontend : public RendererFrontend {
public:
struct RenderResult {
PremultipliedImage image;
gfx::RenderingStats stats;
};
HeadlessFrontend(float pixelRatio_,
gfx::HeadlessBackend::SwapBehaviour swapBehviour = gfx::HeadlessBackend::SwapBehaviour::NoFlush,
gfx::ContextMode mode = gfx::ContextMode::Unique,
const optional<std::string> localFontFamily = {});
HeadlessFrontend(Size,
float pixelRatio_,
gfx::HeadlessBackend::SwapBehaviour swapBehviour = gfx::HeadlessBackend::SwapBehaviour::NoFlush,
gfx::ContextMode mode = gfx::ContextMode::Unique,
const optional<std::string> localFontFamily = {});
~HeadlessFrontend() override;
void reset() override;
void update(std::shared_ptr<UpdateParameters>) override;
void setObserver(RendererObserver&) override;
double getFrameTime() const;
Size getSize() const;
void setSize(Size);
Renderer* getRenderer();
gfx::RendererBackend* getBackend();
CameraOptions getCameraOptions();
bool hasImage(const std::string&);
bool hasLayer(const std::string&);
bool hasSource(const std::string&);
ScreenCoordinate pixelForLatLng(const LatLng&);
LatLng latLngForPixel(const ScreenCoordinate&);
PremultipliedImage readStillImage();
RenderResult render(Map&);
void renderOnce(Map&);
optional<TransformState> getTransformState() const;
private:
Size size;
float pixelRatio;
std::atomic<double> frameTime;
std::unique_ptr<gfx::HeadlessBackend> backend;
util::AsyncTask asyncInvalidate;
std::unique_ptr<Renderer> renderer;
std::shared_ptr<UpdateParameters> updateParameters;
};
} // namespace mbgl
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