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      1 /*
      2  * Copyright (C) 2007, 2008, 2009, 2010 Apple, Inc.  All rights reserved.
      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  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. 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 APPLE COMPUTER, INC. ``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 #include "config.h"
     26 
     27 #include "QTTrack.h"
     28 
     29 #include <Movies.h>
     30 #include <QTML.h>
     31 
     32 using namespace std;
     33 
     34 class QTTrackPrivate {
     35     WTF_MAKE_NONCOPYABLE(QTTrackPrivate);
     36 public:
     37     QTTrackPrivate();
     38     ~QTTrackPrivate();
     39 
     40     QTTrack* m_track;
     41     Track m_trackHandle;
     42 };
     43 
     44 QTTrackPrivate::QTTrackPrivate()
     45     : m_track(0)
     46     , m_trackHandle(0)
     47 {
     48 }
     49 
     50 QTTrackPrivate::~QTTrackPrivate()
     51 {
     52     m_trackHandle = 0;
     53 }
     54 
     55 PassRefPtr<QTTrack> QTTrack::create(Track trackHandle)
     56 {
     57     return adoptRef(new QTTrack(trackHandle));
     58 }
     59 
     60 QTTrack::QTTrack(Track trackHandle)
     61     : m_private(new QTTrackPrivate())
     62 {
     63     m_private->m_track = this;
     64     m_private->m_trackHandle = trackHandle;
     65 }
     66 
     67 QTTrack::~QTTrack()
     68 {
     69     delete m_private;
     70 }
     71 
     72 bool QTTrack::isEnabled() const
     73 {
     74     ASSERT(m_private->m_track);
     75     return GetTrackEnabled(m_private->m_trackHandle);
     76 }
     77 
     78 void QTTrack::setEnabled(bool enabled)
     79 {
     80     ASSERT(m_private->m_trackHandle);
     81     SetTrackEnabled(m_private->m_trackHandle, enabled);
     82 }
     83 
     84 CGAffineTransform QTTrack::getTransform() const
     85 {
     86     ASSERT(m_private->m_trackHandle);
     87     MatrixRecord m = {0};
     88     GetTrackMatrix(m_private->m_trackHandle, &m);
     89 
     90     ASSERT(!m.matrix[0][2]);
     91     ASSERT(!m.matrix[1][2]);
     92     CGAffineTransform transform = CGAffineTransformMake(
     93         Fix2X(m.matrix[0][0]),
     94         Fix2X(m.matrix[0][1]),
     95         Fix2X(m.matrix[1][0]),
     96         Fix2X(m.matrix[1][1]),
     97         Fix2X(m.matrix[2][0]),
     98         Fix2X(m.matrix[2][1]));
     99 
    100     return transform;
    101 }
    102 
    103 void QTTrack::setTransform(CGAffineTransform t)
    104 {
    105     ASSERT(m_private->m_trackHandle);
    106     MatrixRecord m = {{
    107         {X2Fix(t.a), X2Fix(t.b), 0},
    108         {X2Fix(t.c), X2Fix(t.d), 0},
    109         {X2Fix(t.tx), X2Fix(t.ty), fract1},
    110     }};
    111 
    112     SetTrackMatrix(m_private->m_trackHandle, &m);
    113 }
    114 
    115 void QTTrack::resetTransform()
    116 {
    117     ASSERT(m_private->m_trackHandle);
    118     SetTrackMatrix(m_private->m_trackHandle, 0);
    119 }
    120 
    121