JUCE/modules/juce_audio_utils/gui/juce_AudioDeviceSelectorComponent.h

/*
  ==============================================================================

   This file is part of the JUCE library.
   Copyright (c) 2017 - ROLI Ltd.

   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 5 End-User License
   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
   27th April 2017).

   End User License Agreement: www.juce.com/juce-5-licence
   Privacy Policy: www.juce.com/juce-5-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
{

//==============================================================================
/**
    A component containing controls to let the user change the audio settings of
    an AudioDeviceManager object.

    Very easy to use - just create one of these and show it to the user.

    @see AudioDeviceManager

    @tags{Audio}
*/
class JUCE_API  AudioDeviceSelectorComponent  : public Component,
                                                private ChangeListener,
                                                private Timer
{
public:
    //==============================================================================
    /** Creates the component.

        If your app needs only output channels, you might ask for a maximum of 0 input
        channels, and the component won't display any options for choosing the input
        channels. And likewise if you're doing an input-only app.

        @param deviceManager            the device manager that this component should control
        @param minAudioInputChannels    the minimum number of audio input channels that the application needs
        @param maxAudioInputChannels    the maximum number of audio input channels that the application needs
        @param minAudioOutputChannels   the minimum number of audio output channels that the application needs
        @param maxAudioOutputChannels   the maximum number of audio output channels that the application needs
        @param showMidiInputOptions     if true, the component will allow the user to select which midi inputs are enabled
        @param showMidiOutputSelector   if true, the component will let the user choose a default midi output device
        @param showChannelsAsStereoPairs    if true, channels will be treated as pairs; if false, channels will be
                                        treated as a set of separate mono channels.
        @param hideAdvancedOptionsWithButton    if true, only the minimum amount of UI components
                                        are shown, with an "advanced" button that shows the rest of them
    */
    AudioDeviceSelectorComponent (AudioDeviceManager& deviceManager,
                                  int minAudioInputChannels,
                                  int maxAudioInputChannels,
                                  int minAudioOutputChannels,
                                  int maxAudioOutputChannels,
                                  bool showMidiInputOptions,
                                  bool showMidiOutputSelector,
                                  bool showChannelsAsStereoPairs,
                                  bool hideAdvancedOptionsWithButton);

    /** Destructor */
    ~AudioDeviceSelectorComponent();

    /** The device manager that this component is controlling */
    AudioDeviceManager& deviceManager;

    /** Sets the standard height used for items in the panel. */
    void setItemHeight (int itemHeight);

    /** Returns the standard height used for items in the panel. */
    int getItemHeight() const noexcept      { return itemHeight; }

    /** Returns the ListBox that's being used to show the midi inputs, or nullptr if there isn't one. */
    ListBox* getMidiInputSelectorListBox() const noexcept;

    //==============================================================================
    /** @internal */
    void resized() override;
    /** @internal */
    void timerCallback() override;

private:
    //==============================================================================
    std::unique_ptr<ComboBox> deviceTypeDropDown;
    std::unique_ptr<Label> deviceTypeDropDownLabel;
    std::unique_ptr<Component> audioDeviceSettingsComp;
    String audioDeviceSettingsCompType;
    int itemHeight;
    const int minOutputChannels, maxOutputChannels, minInputChannels, maxInputChannels;
    const bool showChannelsAsStereoPairs;
    const bool hideAdvancedOptionsWithButton;

    class MidiInputSelectorComponentListBox;
    std::unique_ptr<MidiInputSelectorComponentListBox> midiInputsList;
    std::unique_ptr<ComboBox> midiOutputSelector;
    std::unique_ptr<Label> midiInputsLabel, midiOutputLabel;
    std::unique_ptr<TextButton> bluetoothButton;

    void handleBluetoothButton();
    void updateDeviceType();
    void updateMidiOutput();
    void changeListenerCallback (ChangeBroadcaster*) override;
    void updateAllControls();

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AudioDeviceSelectorComponent)
};

} // namespace juce