juicysfplugin/modules/juce_gui_basics/components/juce_Desktop.cpp

424 lines
14 KiB
C++

/*
==============================================================================
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
{
Desktop::Desktop()
: mouseSources (new MouseInputSource::SourceList()),
masterScaleFactor ((float) getDefaultMasterScale())
{
displays.reset (new Displays (*this));
}
Desktop::~Desktop()
{
setScreenSaverEnabled (true);
animator.cancelAllAnimations (false);
jassert (instance == this);
instance = nullptr;
// doh! If you don't delete all your windows before exiting, you're going to
// be leaking memory!
jassert (desktopComponents.size() == 0);
}
Desktop& JUCE_CALLTYPE Desktop::getInstance()
{
if (instance == nullptr)
instance = new Desktop();
return *instance;
}
Desktop* Desktop::instance = nullptr;
//==============================================================================
int Desktop::getNumComponents() const noexcept
{
return desktopComponents.size();
}
Component* Desktop::getComponent (int index) const noexcept
{
return desktopComponents [index];
}
Component* Desktop::findComponentAt (Point<int> screenPosition) const
{
ASSERT_MESSAGE_MANAGER_IS_LOCKED
for (int i = desktopComponents.size(); --i >= 0;)
{
auto* c = desktopComponents.getUnchecked(i);
if (c->isVisible())
{
auto relative = c->getLocalPoint (nullptr, screenPosition);
if (c->contains (relative))
return c->getComponentAt (relative);
}
}
return nullptr;
}
//==============================================================================
LookAndFeel& Desktop::getDefaultLookAndFeel() noexcept
{
if (currentLookAndFeel == nullptr)
{
if (defaultLookAndFeel == nullptr)
defaultLookAndFeel.reset (new LookAndFeel_V4());
currentLookAndFeel = defaultLookAndFeel.get();
}
return *currentLookAndFeel;
}
void Desktop::setDefaultLookAndFeel (LookAndFeel* newDefaultLookAndFeel)
{
ASSERT_MESSAGE_MANAGER_IS_LOCKED
currentLookAndFeel = newDefaultLookAndFeel;
for (int i = getNumComponents(); --i >= 0;)
if (auto* c = getComponent (i))
c->sendLookAndFeelChange();
}
//==============================================================================
void Desktop::addDesktopComponent (Component* c)
{
jassert (c != nullptr);
jassert (! desktopComponents.contains (c));
desktopComponents.addIfNotAlreadyThere (c);
}
void Desktop::removeDesktopComponent (Component* c)
{
desktopComponents.removeFirstMatchingValue (c);
}
void Desktop::componentBroughtToFront (Component* c)
{
auto index = desktopComponents.indexOf (c);
jassert (index >= 0);
if (index >= 0)
{
int newIndex = -1;
if (! c->isAlwaysOnTop())
{
newIndex = desktopComponents.size();
while (newIndex > 0 && desktopComponents.getUnchecked (newIndex - 1)->isAlwaysOnTop())
--newIndex;
--newIndex;
}
desktopComponents.move (index, newIndex);
}
}
//==============================================================================
Point<int> Desktop::getMousePosition()
{
return getMousePositionFloat().roundToInt();
}
Point<float> Desktop::getMousePositionFloat()
{
return getInstance().getMainMouseSource().getScreenPosition();
}
void Desktop::setMousePosition (Point<int> newPosition)
{
getInstance().getMainMouseSource().setScreenPosition (newPosition.toFloat());
}
Point<int> Desktop::getLastMouseDownPosition()
{
return getInstance().getMainMouseSource().getLastMouseDownPosition().roundToInt();
}
int Desktop::getMouseButtonClickCounter() const noexcept { return mouseClickCounter; }
int Desktop::getMouseWheelMoveCounter() const noexcept { return mouseWheelCounter; }
void Desktop::incrementMouseClickCounter() noexcept { ++mouseClickCounter; }
void Desktop::incrementMouseWheelCounter() noexcept { ++mouseWheelCounter; }
const Array<MouseInputSource>& Desktop::getMouseSources() const noexcept { return mouseSources->sourceArray; }
int Desktop::getNumMouseSources() const noexcept { return mouseSources->sources.size(); }
int Desktop::getNumDraggingMouseSources() const noexcept { return mouseSources->getNumDraggingMouseSources(); }
MouseInputSource* Desktop::getMouseSource (int index) const noexcept { return mouseSources->getMouseSource (index); }
MouseInputSource* Desktop::getDraggingMouseSource (int index) const noexcept { return mouseSources->getDraggingMouseSource (index); }
MouseInputSource Desktop::getMainMouseSource() const noexcept { return MouseInputSource (mouseSources->sources.getUnchecked(0)); }
void Desktop::beginDragAutoRepeat (int interval) { mouseSources->beginDragAutoRepeat (interval); }
//==============================================================================
void Desktop::addFocusChangeListener (FocusChangeListener* l) { focusListeners.add (l); }
void Desktop::removeFocusChangeListener (FocusChangeListener* l) { focusListeners.remove (l); }
void Desktop::triggerFocusCallback() { triggerAsyncUpdate(); }
void Desktop::handleAsyncUpdate()
{
// The component may be deleted during this operation, but we'll use a SafePointer rather than a
// BailOutChecker so that any remaining listeners will still get a callback (with a null pointer).
WeakReference<Component> currentFocus (Component::getCurrentlyFocusedComponent());
focusListeners.call ([&] (FocusChangeListener& l) { l.globalFocusChanged (currentFocus); });
}
//==============================================================================
void Desktop::resetTimer()
{
if (mouseListeners.size() == 0)
stopTimer();
else
startTimer (100);
lastFakeMouseMove = getMousePositionFloat();
}
ListenerList<MouseListener>& Desktop::getMouseListeners()
{
resetTimer();
return mouseListeners;
}
void Desktop::addGlobalMouseListener (MouseListener* listener)
{
ASSERT_MESSAGE_MANAGER_IS_LOCKED
mouseListeners.add (listener);
resetTimer();
}
void Desktop::removeGlobalMouseListener (MouseListener* listener)
{
ASSERT_MESSAGE_MANAGER_IS_LOCKED
mouseListeners.remove (listener);
resetTimer();
}
void Desktop::timerCallback()
{
if (lastFakeMouseMove != getMousePositionFloat())
sendMouseMove();
}
void Desktop::sendMouseMove()
{
if (! mouseListeners.isEmpty())
{
startTimer (20);
lastFakeMouseMove = getMousePositionFloat();
if (auto* target = findComponentAt (lastFakeMouseMove.roundToInt()))
{
Component::BailOutChecker checker (target);
auto pos = target->getLocalPoint (nullptr, lastFakeMouseMove);
auto now = Time::getCurrentTime();
const MouseEvent me (getMainMouseSource(), pos, ModifierKeys::currentModifiers, MouseInputSource::invalidPressure,
MouseInputSource::invalidOrientation, MouseInputSource::invalidRotation,
MouseInputSource::invalidTiltX, MouseInputSource::invalidTiltY,
target, target, now, pos, now, 0, false);
if (me.mods.isAnyMouseButtonDown())
mouseListeners.callChecked (checker, [&] (MouseListener& l) { l.mouseDrag (me); });
else
mouseListeners.callChecked (checker, [&] (MouseListener& l) { l.mouseMove (me); });
}
}
}
//==============================================================================
Desktop::Displays::Displays (Desktop& desktop) { init (desktop); }
Desktop::Displays::~Displays() {}
const Desktop::Displays::Display& Desktop::Displays::getMainDisplay() const noexcept
{
ASSERT_MESSAGE_MANAGER_IS_LOCKED
jassert (displays.getReference(0).isMain);
return displays.getReference(0);
}
const Desktop::Displays::Display& Desktop::Displays::getDisplayContaining (Point<int> position) const noexcept
{
ASSERT_MESSAGE_MANAGER_IS_LOCKED
auto* best = &displays.getReference(0);
double bestDistance = 1.0e10;
for (auto& d : displays)
{
if (d.totalArea.contains (position))
{
best = &d;
break;
}
auto distance = d.totalArea.getCentre().getDistanceFrom (position);
if (distance < bestDistance)
{
bestDistance = distance;
best = &d;
}
}
return *best;
}
RectangleList<int> Desktop::Displays::getRectangleList (bool userAreasOnly) const
{
ASSERT_MESSAGE_MANAGER_IS_LOCKED
RectangleList<int> rl;
for (auto& d : displays)
rl.addWithoutMerging (userAreasOnly ? d.userArea : d.totalArea);
return rl;
}
Rectangle<int> Desktop::Displays::getTotalBounds (bool userAreasOnly) const
{
return getRectangleList (userAreasOnly).getBounds();
}
bool operator== (const Desktop::Displays::Display& d1, const Desktop::Displays::Display& d2) noexcept;
bool operator== (const Desktop::Displays::Display& d1, const Desktop::Displays::Display& d2) noexcept
{
return d1.userArea == d2.userArea
&& d1.totalArea == d2.totalArea
&& d1.scale == d2.scale
&& d1.isMain == d2.isMain;
}
bool operator!= (const Desktop::Displays::Display& d1, const Desktop::Displays::Display& d2) noexcept;
bool operator!= (const Desktop::Displays::Display& d1, const Desktop::Displays::Display& d2) noexcept
{
return ! (d1 == d2);
}
void Desktop::Displays::init (Desktop& desktop)
{
findDisplays (desktop.getGlobalScaleFactor());
}
void Desktop::Displays::refresh()
{
Array<Display> oldDisplays;
oldDisplays.swapWith (displays);
init (Desktop::getInstance());
if (oldDisplays != displays)
{
for (int i = ComponentPeer::getNumPeers(); --i >= 0;)
if (auto* peer = ComponentPeer::getPeer (i))
peer->handleScreenSizeChange();
}
}
//==============================================================================
void Desktop::setKioskModeComponent (Component* componentToUse, bool allowMenusAndBars)
{
if (kioskModeReentrant)
return;
const ScopedValueSetter<bool> setter (kioskModeReentrant, true, false);
if (kioskModeComponent != componentToUse)
{
// agh! Don't delete or remove a component from the desktop while it's still the kiosk component!
jassert (kioskModeComponent == nullptr || ComponentPeer::getPeerFor (kioskModeComponent) != nullptr);
if (auto* oldKioskComp = kioskModeComponent)
{
kioskModeComponent = nullptr; // (to make sure that isKioskMode() returns false when resizing the old one)
setKioskComponent (oldKioskComp, false, allowMenusAndBars);
oldKioskComp->setBounds (kioskComponentOriginalBounds);
}
kioskModeComponent = componentToUse;
if (kioskModeComponent != nullptr)
{
// Only components that are already on the desktop can be put into kiosk mode!
jassert (ComponentPeer::getPeerFor (kioskModeComponent) != nullptr);
kioskComponentOriginalBounds = kioskModeComponent->getBounds();
setKioskComponent (kioskModeComponent, true, allowMenusAndBars);
}
}
}
//==============================================================================
void Desktop::setOrientationsEnabled (int newOrientations)
{
if (allowedOrientations != newOrientations)
{
// Dodgy set of flags being passed here! Make sure you specify at least one permitted orientation.
jassert (newOrientations != 0 && (newOrientations & ~allOrientations) == 0);
allowedOrientations = newOrientations;
allowedOrientationsChanged();
}
}
int Desktop::getOrientationsEnabled() const noexcept
{
return allowedOrientations;
}
bool Desktop::isOrientationEnabled (DisplayOrientation orientation) const noexcept
{
// Make sure you only pass one valid flag in here...
jassert (orientation == upright || orientation == upsideDown
|| orientation == rotatedClockwise || orientation == rotatedAntiClockwise);
return (allowedOrientations & orientation) != 0;
}
void Desktop::setGlobalScaleFactor (float newScaleFactor) noexcept
{
ASSERT_MESSAGE_MANAGER_IS_LOCKED
if (masterScaleFactor != newScaleFactor)
{
masterScaleFactor = newScaleFactor;
displays->refresh();
}
}
} // namespace juce