StyleRecipe.h

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#pragma once
#include "common/Export.h"
 
 
#include <memory>
#include <string>
#include <vector>
 
namespace eve::graphics {
class Canvas;
class Graphics;
class Texture;
}  // namespace eve::graphics
 
namespace eve::stylize {
 
class StyleInstance;
class StylePass;
 
class EVENGINE_API_WORLD StyleRecipe {
public:
    StyleRecipe() = default;
    ~StyleRecipe();
 
    StyleRecipe(const StyleRecipe&)            = delete;
    StyleRecipe& operator=(const StyleRecipe&) = delete;
 
    void           clear();
    void           add(StyleInstance* instance);
    int            getStyleCount() const { return int(instances_.size()); }
    StyleInstance* getStyle(int index) const;
 
    void        compile(graphics::Graphics* gfx);
    bool        isCompiled() const { return compiled_; }
    std::string getStage() const { return stage_; }
 
    void apply(graphics::Graphics* gfx, graphics::Texture* source, graphics::Canvas* dest);
    void applyCanvas(graphics::Graphics* gfx, graphics::Canvas* source, graphics::Canvas* dest);
 
private:
    void ensureScratch(graphics::Graphics* gfx, graphics::Canvas* dest);
 
    std::vector<StyleInstance*>             instances_;
    std::vector<std::unique_ptr<StylePass>> passes_;
    graphics::Graphics*                     graphics_      = nullptr;
    graphics::Canvas*                       scratch_       = nullptr;
    int                                     scratchWidth_  = 0;
    int                                     scratchHeight_ = 0;
    std::string                             stage_;
    bool                                    compiled_ = false;
};
 
}  // namespace eve::stylize