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      1 /*
      2  * Copyright 2008, The Android Open Source Project
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *  * Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  *  * Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 
     28 #if ENABLE(TOUCH_EVENTS)
     29 
     30 #include "Touch.h"
     31 
     32 #include "FrameView.h"
     33 
     34 namespace WebCore {
     35 
     36 static int contentsX(Frame* frame)
     37 {
     38     if (!frame)
     39         return 0;
     40     FrameView* frameView = frame->view();
     41     if (!frameView)
     42         return 0;
     43     return frameView->scrollX() / frame->pageZoomFactor();
     44 }
     45 
     46 static int contentsY(Frame* frame)
     47 {
     48     if (!frame)
     49         return 0;
     50     FrameView* frameView = frame->view();
     51     if (!frameView)
     52         return 0;
     53     return frameView->scrollY() / frame->pageZoomFactor();
     54 }
     55 
     56 Touch::Touch(Frame* frame, EventTarget* target, unsigned identifier, int screenX, int screenY, int pageX, int pageY)
     57     : m_target(target)
     58     , m_identifier(identifier)
     59     , m_clientX(pageX - contentsX(frame))
     60     , m_clientY(pageY - contentsY(frame))
     61     , m_screenX(screenX)
     62     , m_screenY(screenY)
     63     , m_pageX(pageX)
     64     , m_pageY(pageY)
     65 {
     66 }
     67 
     68 } // namespace WebCore
     69 
     70 #endif
     71