juce::DeviceChangeDetector Class Reference

#include <juce_HiddenMessageWindow_windows.h>

Inheritance diagram for juce::DeviceChangeDetector:

Collaboration diagram for juce::DeviceChangeDetector:

Public Member Functions
	DeviceChangeDetector (const wchar_t *const name, std::function< void()> onChangeIn)
void	triggerAsyncDeviceChangeCallback ()

Private Member Functions
int	getTimerInterval () const noexcept
	Returns the timer's interval.
bool	isTimerRunning () const noexcept
	Returns true if the timer is currently running.
void	startTimer (int intervalInMilliseconds) noexcept
	Starts the timer and sets the length of interval required.
void	startTimerHz (int timerFrequencyHz) noexcept
	Starts the timer with an interval specified in Hertz.
void	stopTimer () noexcept
	Stops the timer.
void	timerCallback () override
	The user-defined callback routine that actually gets called periodically.

Static Private Member Functions
static void	callAfterDelay (int milliseconds, std::function< void()> functionToCall)
	Invokes a lambda after a given number of milliseconds.
static void	callPendingTimersSynchronously ()
	For internal use only: invokes any timers that need callbacks.
static LRESULT CALLBACK	deviceChangeEventCallback (HWND h, const UINT message, const WPARAM wParam, const LPARAM lParam)

Private Attributes
HiddenMessageWindow	messageWindow
std::function< void()>	onChange
size_t	positionInQueue = (size_t) -1
int	timerPeriodMs = 0
SharedResourcePointer< TimerThread >	timerThread

Constructor & Destructor Documentation

DeviceChangeDetector()

juce::DeviceChangeDetector::DeviceChangeDetector ( const wchar_t *const  name, std::function< void()>  onChangeIn  )

inline

References juce::HiddenMessageWindow::getHWND(), and messageWindow.

Member Function Documentation

callAfterDelay()

static void juce::Timer::callAfterDelay ( int  milliseconds, std::function< void()>  functionToCall  )

staticinherited

Invokes a lambda after a given number of milliseconds.

callPendingTimersSynchronously()

static void juce::Timer::callPendingTimersSynchronously ( )

staticinherited

For internal use only: invokes any timers that need callbacks.

Don't call this unless you really know what you're doing!

deviceChangeEventCallback()

static LRESULT CALLBACK juce::DeviceChangeDetector::deviceChangeEventCallback ( HWND  h, const UINT  message, const WPARAM  wParam, const LPARAM  lParam  )

inlinestaticprivate

References triggerAsyncDeviceChangeCallback().

getTimerInterval()

int juce::Timer::getTimerInterval ( ) const

inlinenoexceptinherited

Returns the timer's interval.

Returns

the timer's interval in milliseconds if it's running, or 0 if it's not.

Referenced by juce::detail::MouseInputSourceList::beginDragAutoRepeat(), and juce::detail::TopLevelWindowManager::checkFocus().

isTimerRunning()

bool juce::Timer::isTimerRunning ( ) const

inlinenoexceptinherited

Returns true if the timer is currently running.

startTimer()

void juce::Timer::startTimer ( int  intervalInMilliseconds )

noexceptinherited

Starts the timer and sets the length of interval required.

If the timer is already started, this will reset it, so the time between calling this method and the next timer callback will not be less than the interval length passed in.

Parameters

intervalInMilliseconds

the interval to use (any value less than 1 will be rounded up to 1)

Referenced by juce::detail::MouseInputSourceList::beginDragAutoRepeat(), juce::detail::TopLevelWindowManager::checkFocus(), juce::detail::TopLevelWindowManager::checkFocusAsync(), juce::StandalonePluginHolder::init(), and triggerAsyncDeviceChangeCallback().

startTimerHz()

void juce::Timer::startTimerHz ( int  timerFrequencyHz )

noexceptinherited

Starts the timer with an interval specified in Hertz.

This is effectively the same as calling startTimer (1000 / timerFrequencyHz).

Referenced by juce::AnimatedPosition< Behaviour >::endDrag(), juce::AnimatedPosition< Behaviour >::nudge(), and juce::AnimatedPosition< Behaviour >::timerCallback().

stopTimer()

void juce::Timer::stopTimer ( )

noexceptinherited

Stops the timer.

No more timer callbacks will be triggered after this method returns.

Note that if you call this from a background thread while the message-thread is already in the middle of your callback, then this method will cancel any future timer callbacks, but it will return without waiting for the current one to finish. The current callback will continue, possibly still running some of your timer code after this method has returned.

Referenced by juce::StandalonePluginHolder::~StandalonePluginHolder(), juce::AnimatedPosition< Behaviour >::beginDrag(), juce::detail::MouseInputSourceList::beginDragAutoRepeat(), juce::AnimatedPosition< Behaviour >::setPosition(), timerCallback(), juce::detail::MouseInputSourceList::timerCallback(), and juce::AnimatedPosition< Behaviour >::timerCallback().

timerCallback()

void juce::DeviceChangeDetector::timerCallback ( )

inlineoverrideprivatevirtual

The user-defined callback routine that actually gets called periodically.

It's perfectly ok to call startTimer() or stopTimer() from within this callback to change the subsequent intervals.

Implements juce::Timer.

References juce::NullCheckedInvocation::invoke(), onChange, and juce::Timer::stopTimer().

triggerAsyncDeviceChangeCallback()

void juce::DeviceChangeDetector::triggerAsyncDeviceChangeCallback ( )

inline

References juce::Timer::startTimer().

Referenced by deviceChangeEventCallback().

Member Data Documentation

messageWindow

HiddenMessageWindow juce::DeviceChangeDetector::messageWindow

private

Referenced by DeviceChangeDetector().

onChange

std::function<void()> juce::DeviceChangeDetector::onChange

private

Referenced by timerCallback().

positionInQueue

size_t juce::Timer::positionInQueue = (size_t) -1

privateinherited

timerPeriodMs

int juce::Timer::timerPeriodMs = 0

privateinherited

timerThread

SharedResourcePointer<TimerThread> juce::Timer::timerThread

privateinherited

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The documentation for this class was generated from the following file:

• juce_HiddenMessageWindow_windows.h