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#pragma once
#include <cstdint>
#include <exception>
namespace mbgl {
class RendererObserver {
public:
virtual ~RendererObserver() = default;
enum class RenderMode : uint32_t {
Partial,
Full
};
// Signals that a repaint is required
virtual void onInvalidate() {}
// Resource failed to download / parse
virtual void onResourceError(std::exception_ptr) {}
// First frame
virtual void onWillStartRenderingMap() {}
// Start of frame, initial is the first frame for this map
virtual void onWillStartRenderingFrame() {}
// End of frame, booleans flags that a repaint is required and that placement changed.
virtual void onDidFinishRenderingFrame(RenderMode, bool /*repaint*/, bool /*placementChanged*/) {}
// Final frame
virtual void onDidFinishRenderingMap() {}
// Style is missing an image
using StyleImageMissingCallback = std::function<void()>;
virtual void onStyleImageMissing(const std::string&, StyleImageMissingCallback done) { done(); }
virtual void onRemoveUnusedStyleImages(const std::vector<std::string>&) {}
};
} // namespace mbgl
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