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113 lines
4.8 KiB
C++
113 lines
4.8 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE 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 ParameterID& idToUse,
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const String& nameToUse,
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NormalisableRange<float> r,
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float def,
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const AudioParameterFloatAttributes& attributes)
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: RangedAudioParameter (idToUse, nameToUse, attributes.getAudioProcessorParameterWithIDAttributes()),
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range (r),
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value (def),
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valueDefault (def),
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stringFromValueFunction (attributes.getStringFromValueFunction()),
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valueFromStringFunction (attributes.getValueFromStringFunction())
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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 (! approximatelyEqual (range.interval, 0.0f))
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{
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if (approximatelyEqual (std::abs (range.interval - std::floor (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 (const ParameterID& pid, const 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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{
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#if __cpp_lib_atomic_is_always_lock_free
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static_assert (std::atomic<float>::is_always_lock_free,
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"AudioParameterFloat requires a lock-free std::atomic<float>");
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#endif
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}
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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 (valueDefault); }
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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 (! approximatelyEqual ((float) 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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