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78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library - "Jules' Utility Class Extensions"
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Copyright 2004-11 by Raw Material Software Ltd.
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------------------------------------------------------------------------------
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JUCE can be redistributed and/or modified under the terms of the GNU General
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Public License (Version 2), as published by the Free Software Foundation.
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A copy of the license is included in the JUCE distribution, or can be found
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online 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.rawmaterialsoftware.com/juce 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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