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https://github.com/juce-framework/JUCE.git
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77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
/*
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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_MULTITOUCHMAPPER_JUCEHEADER__
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#define __JUCE_MULTITOUCHMAPPER_JUCEHEADER__
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template <typename IDType>
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class MultiTouchMapper
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{
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public:
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MultiTouchMapper() {}
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int getIndexOfTouch (IDType touchID)
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{
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jassert (touchID != 0); // need to rethink this if IDs can be 0!
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int touchIndex = currentTouches.indexOf (touchID);
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if (touchIndex < 0)
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{
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for (touchIndex = 0; touchIndex < currentTouches.size(); ++touchIndex)
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if (currentTouches.getUnchecked (touchIndex) == 0)
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break;
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currentTouches.set (touchIndex, touchID);
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}
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return touchIndex;
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}
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void clear()
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{
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currentTouches.clear();
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}
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void clearTouch (int index)
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{
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currentTouches.set (index, 0);
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}
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bool areAnyTouchesActive() const noexcept
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{
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for (int i = currentTouches.size(); --i >= 0;)
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if (currentTouches.getUnchecked(i) != 0)
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return true;
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return false;
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}
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private:
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Array<IDType> currentTouches;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MultiTouchMapper)
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};
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#endif // __JUCE_MULTITOUCHMAPPER_JUCEHEADER__
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