juce_AudioParameterBool.h

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/*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   JUCE is an open source library subject to commercial or open-source
   licensing.
 
   By using JUCE, you agree to the terms of both the JUCE 7 End-User License
   Agreement and JUCE Privacy Policy.
 
   End User License Agreement: www.juce.com/juce-7-licence
   Privacy Policy: www.juce.com/juce-privacy-policy
 
   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).
 
   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.
 
  ==============================================================================
*/
 
namespace juce
{

class AudioParameterBoolAttributes : public RangedAudioParameterAttributes<AudioParameterBoolAttributes, bool> {};
 
//==============================================================================
class JUCE_API AudioParameterBool  : public RangedAudioParameter
{
public:
    AudioParameterBool (const ParameterID& parameterID,
                        const String& parameterName,
                        bool defaultValue,
                        const AudioParameterBoolAttributes& attributes = {});

    [[deprecated ("Prefer the signature taking an Attributes argument")]]
    AudioParameterBool (const ParameterID& parameterID,
                        const String& parameterName,
                        bool defaultValue,
                        const String& parameterLabel,
                        std::function<String (bool value, int maximumStringLength)> stringFromBool = nullptr,
                        std::function<bool (const String& text)> boolFromString = nullptr)
        : AudioParameterBool (parameterID,
                              parameterName,
                              defaultValue,
                              AudioParameterBoolAttributes().withLabel (parameterLabel)
                                                            .withStringFromValueFunction (std::move (stringFromBool))
                                                            .withValueFromStringFunction (std::move (boolFromString)))
    {
    }

    ~AudioParameterBool() override;

    bool get() const noexcept          { return value >= 0.5f; }

    operator bool() const noexcept     { return get(); }

    AudioParameterBool& operator= (bool newValue);

    const NormalisableRange<float>& getNormalisableRange() const override   { return range; }
 
protected:
    virtual void valueChanged (bool newValue);
 
private:
    //==============================================================================
    float getValue() const override;
    void setValue (float newValue) override;
    float getDefaultValue() const override;
    int getNumSteps() const override;
    bool isDiscrete() const override;
    bool isBoolean() const override;
    String getText (float, int) const override;
    float getValueForText (const String&) const override;
 
    const NormalisableRange<float> range { 0.0f, 1.0f, 1.0f };
    std::atomic<float> value;
    const float valueDefault;
    std::function<String (bool, int)> stringFromBoolFunction;
    std::function<bool (const String&)> boolFromStringFunction;
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AudioParameterBool)
};
 
} // namespace juce