/* ============================================================================== 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 { AudioParameterChoice::AudioParameterChoice (const ParameterID& idToUse, const String& nameToUse, const StringArray& c, int def, const AudioParameterChoiceAttributes& attributes) : RangedAudioParameter (idToUse, nameToUse, attributes.getAudioProcessorParameterWithIDAttributes()), choices (c), range ([this] { NormalisableRange rangeWithInterval { 0.0f, (float) choices.size() - 1.0f, [] (float, float end, float v) { return jlimit (0.0f, end, v * end); }, [] (float, float end, float v) { return jlimit (0.0f, 1.0f, v / end); }, [] (float start, float end, float v) { return (float) roundToInt (juce::jlimit (start, end, v)); } }; rangeWithInterval.interval = 1.0f; return rangeWithInterval; }()), value ((float) def), defaultValue (convertTo0to1 ((float) def)), stringFromIndexFunction (attributes.getStringFromValueFunction() != nullptr ? attributes.getStringFromValueFunction() : [this] (int index, int) { return choices [index]; }), indexFromStringFunction (attributes.getValueFromStringFunction() != nullptr ? attributes.getValueFromStringFunction() : [this] (const String& text) { return choices.indexOf (text); }) { jassert (choices.size() > 1); // you must supply an actual set of items to choose from! } AudioParameterChoice::~AudioParameterChoice() { #if __cpp_lib_atomic_is_always_lock_free static_assert (std::atomic::is_always_lock_free, "AudioParameterChoice requires a lock-free std::atomic"); #endif } float AudioParameterChoice::getValue() const { return convertTo0to1 (value); } void AudioParameterChoice::setValue (float newValue) { value = convertFrom0to1 (newValue); valueChanged (getIndex()); } float AudioParameterChoice::getDefaultValue() const { return defaultValue; } int AudioParameterChoice::getNumSteps() const { return choices.size(); } bool AudioParameterChoice::isDiscrete() const { return true; } float AudioParameterChoice::getValueForText (const String& text) const { return convertTo0to1 ((float) indexFromStringFunction (text)); } String AudioParameterChoice::getText (float v, int length) const { return stringFromIndexFunction ((int) convertFrom0to1 (v), length); } void AudioParameterChoice::valueChanged (int) {} AudioParameterChoice& AudioParameterChoice::operator= (int newValue) { if (getIndex() != newValue) setValueNotifyingHost (convertTo0to1 ((float) newValue)); return *this; } //============================================================================== //============================================================================== #if JUCE_UNIT_TESTS struct AudioParameterChoiceTests : public UnitTest { AudioParameterChoiceTests() : UnitTest ("AudioParameterChoice", UnitTestCategories::audioProcessorParameters) {} void runTest() override { beginTest ("Three options switches at the correct points"); { AudioParameterChoice choice ({}, {}, { "a", "b", "c" }, {}); choice.setValueNotifyingHost (0.0f); expectEquals (choice.getIndex(), 0); choice.setValueNotifyingHost (0.2f); expectEquals (choice.getIndex(), 0); choice.setValueNotifyingHost (0.3f); expectEquals (choice.getIndex(), 1); choice.setValueNotifyingHost (0.7f); expectEquals (choice.getIndex(), 1); choice.setValueNotifyingHost (0.8f); expectEquals (choice.getIndex(), 2); choice.setValueNotifyingHost (1.0f); expectEquals (choice.getIndex(), 2); } beginTest ("Out-of-bounds input"); { AudioParameterChoice choiceParam ({}, {}, { "a", "b", "c" }, {}); choiceParam.setValueNotifyingHost (-0.5f); expectEquals (choiceParam.getIndex(), 0); choiceParam.setValueNotifyingHost (1.5f); expectEquals (choiceParam.getIndex(), 2); } } }; static AudioParameterChoiceTests audioParameterChoiceTests; #endif } // namespace juce