include/cinder/app/TouchEvent.h

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/*
 Copyright (c) 2010, The Cinder Project: http://libcinder.org
 All rights reserved.

 Redistribution and use in source and binary forms, with or without modification, are permitted provided that
 the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, this list of conditions and
    the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
    the following disclaimer in the documentation and/or other materials provided with the distribution.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.
*/

#pragma once

#include "cinder/Cinder.h"
#include "cinder/app/Event.h"
#include "cinder/Vector.h"

#include <vector>

namespace cinder { namespace app {

class TouchEvent : public Event {
  public:
    class Touch {
      public:
        Touch() {}
        Touch( const Vec2f &pos, const Vec2f &prevPos, uint32_t id, double time, void *native )
            : mPos( pos ), mPrevPos( prevPos ), mId( id ), mTime( time ), mNative( native )
        {}
    
        float       getX() const { return mPos.x; }
        float       getY() const { return mPos.y; }     
        Vec2f       getPos() const { return mPos; }
        float       getPrevX() const { return mPrevPos.x; }
        float       getPrevY() const { return mPrevPos.y; }     
        Vec2f       getPrevPos() const { return mPrevPos; }
        uint32_t    getId() const { return mId; }
        double      getTime() const { return mTime; }
        const void* getNative() const { return mNative; }
        
      private:
        Vec2f       mPos, mPrevPos;
        uint32_t    mId;
        double      mTime;
        void        *mNative;
    };

    TouchEvent()
        : Event()
    {}
    TouchEvent( WindowRef win, const std::vector<Touch> &touches )
        : Event( win ), mTouches( touches )
    {}
    
    const std::vector<Touch>&   getTouches() const { return mTouches; }
    std::vector<Touch>&         getTouches() { return mTouches; }

  private:
    std::vector<Touch>      mTouches;
    bool                    mHandled;
};

inline std::ostream& operator<<( std::ostream &out, const TouchEvent::Touch &touch )
{
    out << touch.getId() << ": " << touch.getPos() << " @ " << touch.getTime() << "s";
    return out;
}

inline std::ostream& operator<<( std::ostream &out, const TouchEvent &event )
{
    out << "{" << std::endl;
    for( std::vector<TouchEvent::Touch>::const_iterator tIt = event.getTouches().begin(); tIt != event.getTouches().end(); ++tIt )
        out << "  " << *tIt << std::endl;
    out << "}";
    return out;
}

} } // namespace cinder::app