UvPaintSession.h

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#pragma once
#include "common/Export.h"
 
 
#include "common/Result.h"
 
#include <cstdint>
#include <memory>
#include <vector>
 
namespace eve::image {
 
class ImageData;
struct UvPaintReceipt;
 
class EVENGINE_API_PLATFORM UvPaintSession {
public:
    UvPaintSession();
    ~UvPaintSession();
    UvPaintSession(const UvPaintSession&)            = delete;
    UvPaintSession& operator=(const UvPaintSession&) = delete;
 
    [[nodiscard]] Result<void> initializeResult(const ImageData& image);
    [[nodiscard]] Result<UvPaintReceipt> paintCircleResult(float u, float v, float radiusPixels, float r, float g,
                                                           float b, float a, bool wrapU = false, bool wrapV = false);
    [[nodiscard]] Result<void> undoResult();
    [[nodiscard]] Result<void> restoreResult();
    [[nodiscard]] Result<void> bakeResult();
    [[nodiscard]] Result<std::unique_ptr<ImageData>> currentImageResult() const;
    [[nodiscard]] Result<void> copyCurrentToResult(ImageData& destination) const;
    [[nodiscard]] std::uint64_t revision() const noexcept { return revision_; }
    [[nodiscard]] int undoCount() const noexcept { return static_cast<int>(undo_.size()); }
    [[nodiscard]] bool isInitialized() const noexcept { return current_ != nullptr; }
 
private:
    std::unique_ptr<ImageData>              original_;
    std::unique_ptr<ImageData>              current_;
    std::vector<std::unique_ptr<ImageData>> undo_;
    std::uint64_t                           revision_ = 0;
};
 
}  // namespace eve::image