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https://github.com/juce-framework/JUCE.git
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97 lines
3.9 KiB
C++
97 lines
3.9 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 5 End-User License
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Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
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27th April 2017).
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End User License Agreement: www.juce.com/juce-5-licence
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Privacy Policy: www.juce.com/juce-5-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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AudioParameterFloat::AudioParameterFloat (const String& idToUse, const String& nameToUse,
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NormalisableRange<float> r, float def,
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const String& labelToUse, Category categoryToUse,
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std::function<String(float, int)> stringFromValue,
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std::function<float(const String&)> valueFromString)
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: RangedAudioParameter (idToUse, nameToUse, labelToUse, categoryToUse),
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range (r), value (def), defaultValue (def),
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stringFromValueFunction (stringFromValue),
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valueFromStringFunction (valueFromString)
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{
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if (stringFromValueFunction == nullptr)
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{
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auto numDecimalPlacesToDisplay = [this]
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{
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int numDecimalPlaces = 7;
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if (range.interval != 0.0f)
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{
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if (approximatelyEqual (std::abs (range.interval - (int) range.interval), 0.0f))
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return 0;
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auto v = std::abs (roundToInt (range.interval * pow (10, numDecimalPlaces)));
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while ((v % 10) == 0 && numDecimalPlaces > 0)
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{
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--numDecimalPlaces;
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v /= 10;
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}
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}
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return numDecimalPlaces;
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}();
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stringFromValueFunction = [numDecimalPlacesToDisplay] (float v, int length)
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{
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String asText (v, numDecimalPlacesToDisplay);
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return length > 0 ? asText.substring (0, length) : asText;
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};
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}
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if (valueFromStringFunction == nullptr)
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valueFromStringFunction = [] (const String& text) { return text.getFloatValue(); };
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}
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AudioParameterFloat::AudioParameterFloat (String pid, String nm, float minValue, float maxValue, float def)
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: AudioParameterFloat (pid, nm, { minValue, maxValue, 0.01f }, def)
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{
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}
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AudioParameterFloat::~AudioParameterFloat() {}
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float AudioParameterFloat::getValue() const { return convertTo0to1 (value); }
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void AudioParameterFloat::setValue (float newValue) { value = convertFrom0to1 (newValue); valueChanged (get()); }
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float AudioParameterFloat::getDefaultValue() const { return convertTo0to1 (defaultValue); }
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int AudioParameterFloat::getNumSteps() const { return AudioProcessorParameterWithID::getNumSteps(); }
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String AudioParameterFloat::getText (float v, int length) const { return stringFromValueFunction (convertFrom0to1 (v), length); }
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float AudioParameterFloat::getValueForText (const String& text) const { return convertTo0to1 (valueFromStringFunction (text)); }
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void AudioParameterFloat::valueChanged (float) {}
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AudioParameterFloat& AudioParameterFloat::operator= (float newValue)
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{
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if (value != newValue)
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setValueNotifyingHost (convertTo0to1 (newValue));
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return *this;
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}
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} // namespace juce
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