//  SPDX-License-Identifier: MIT
//
//  EmulationStation Desktop Edition
//  SliderComponent.h
//
//  Slider to set value in a predefined range.
//

#ifndef ES_CORE_COMPONENTS_SLIDER_COMPONENT_H
#define ES_CORE_COMPONENTS_SLIDER_COMPONENT_H

#include "GuiComponent.h"
#include "components/ImageComponent.h"

class Font;
class TextCache;

// Used to display/edit a value between some min and max values.
class SliderComponent : public GuiComponent
{
public:
    using GuiComponent::getValue;
    using GuiComponent::setValue;

    // Minimum value (far left of the slider), maximum value (far right of the slider),
    // increment size (how much pressing L/R moves by), unit to display (optional).
    SliderComponent(
        Window* window, float min, float max, float increment, const std::string& suffix = "");

    void setValue(float value);
    float getValue() { return mValue; }

    bool input(InputConfig* config, Input input) override;
    void update(int deltaTime) override;
    void render(const glm::mat4& parentTrans) override;

    void onSizeChanged() override;

    virtual std::vector<HelpPrompt> getHelpPrompts() override;

private:
    void onValueChanged();

    float mMin, mMax;
    float mValue;
    float mSingleIncrement;
    float mMoveRate;
    float mBarHeight;
    int mMoveAccumulator;

    ImageComponent mKnob;

    std::string mSuffix;
    std::shared_ptr<Font> mFont;
    std::shared_ptr<TextCache> mValueCache;
};

#endif // ES_CORE_COMPONENTS_SLIDER_COMPONENT_H