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106 lines
4.0 KiB
106 lines
4.0 KiB
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found at: www.gnu.org/licenses
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.juce.com for more information.
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==============================================================================
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*/
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#ifndef JUCE_MOUSEINACTIVITYDETECTOR_H_INCLUDED
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#define JUCE_MOUSEINACTIVITYDETECTOR_H_INCLUDED
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//==============================================================================
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/**
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This object watches for mouse-events happening within a component, and if
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the mouse remains still for long enough, triggers an event to indicate that
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it has become inactive.
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You'd use this for situations where e.g. you want to hide the mouse-cursor
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when the user's not actively using the mouse.
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After creating an instance of this, use addListener to get callbacks when
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the activity status changes.
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*/
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class JUCE_API MouseInactivityDetector : private Timer,
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private MouseListener
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{
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public:
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/** Creates an inactivity watcher, attached to the given component.
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The target component must not be deleted while this - it will be monitored
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for any mouse events in it or its child components.
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*/
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MouseInactivityDetector (Component& target);
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/** Destructor. */
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~MouseInactivityDetector();
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/** Sets the time for which the mouse must be still before the callback
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is triggered.
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*/
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void setDelay (int newDelayMilliseconds);
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//==============================================================================
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/** Classes should implement this to receive callbacks from a MouseInactivityDetector
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when the mouse becomes active or inactive.
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*/
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class Listener
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{
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public:
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virtual ~Listener() {}
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/** Called when the mouse is moved or clicked for the first time
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after a period of inactivity. */
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virtual void mouseBecameActive() = 0;
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/** Called when the mouse hasn't been moved for the timeout period. */
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virtual void mouseBecameInactive() = 0;
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};
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/** Registers a listener. */
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void addListener (Listener* listener);
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/** Removes a previously-registered listener. */
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void removeListener (Listener* listener);
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private:
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//==============================================================================
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Component& targetComp;
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ListenerList<Listener> listenerList;
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Point<int> lastMousePos;
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int delayMs;
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bool isActive;
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void timerCallback() override;
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void wakeUp (const MouseEvent&, bool alwaysWake);
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void setActive (bool);
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void mouseMove (const MouseEvent& e) override { wakeUp (e, false); }
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void mouseEnter (const MouseEvent& e) override { wakeUp (e, false); }
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void mouseExit (const MouseEvent& e) override { wakeUp (e, false); }
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void mouseDown (const MouseEvent& e) override { wakeUp (e, true); }
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void mouseDrag (const MouseEvent& e) override { wakeUp (e, true); }
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void mouseUp (const MouseEvent& e) override { wakeUp (e, true); }
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void mouseWheelMove (const MouseEvent& e, const MouseWheelDetails&) override { wakeUp (e, true); }
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MouseInactivityDetector)
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};
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#endif // JUCE_MOUSEINACTIVITYDETECTOR_H_INCLUDED
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