• Home
  • History
  • Annotate
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*
2  * Copyright (C) 2013 Google 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 are
6  * met:
7  *
8  *     * Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  *     * Redistributions in binary form must reproduce the above
11  * copyright notice, this list of conditions and the following disclaimer
12  * in the documentation and/or other materials provided with the
13  * distribution.
14  *     * Neither the name of Google Inc. nor the names of its
15  * contributors may be used to endorse or promote products derived from
16  * this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 #include "config.h"
32 #include "platform/transforms/InterpolatedTransformOperation.h"
33 
34 #include "platform/transforms/IdentityTransformOperation.h"
35 
36 namespace blink {
37 
operator ==(const TransformOperation & o) const38 bool InterpolatedTransformOperation::operator==(const TransformOperation& o) const
39 {
40     if (!isSameType(o))
41         return false;
42     const InterpolatedTransformOperation* t = static_cast<const InterpolatedTransformOperation*>(&o);
43     return progress == t->progress && from == t->from && to == t->to;
44 }
45 
apply(TransformationMatrix & transform,const FloatSize & borderBoxSize) const46 void InterpolatedTransformOperation::apply(TransformationMatrix& transform, const FloatSize& borderBoxSize) const
47 {
48     TransformationMatrix fromTransform;
49     TransformationMatrix toTransform;
50     from.apply(borderBoxSize, fromTransform);
51     to.apply(borderBoxSize, toTransform);
52 
53     toTransform.blend(fromTransform, progress);
54     transform.multiply(toTransform);
55 }
56 
blend(const TransformOperation * from,double progress,bool blendToIdentity)57 PassRefPtr<TransformOperation> InterpolatedTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity)
58 {
59     if (from && !from->isSameType(*this))
60         return this;
61 
62     TransformOperations thisOperations;
63     thisOperations.operations().append(this);
64     TransformOperations fromOperations;
65     if (blendToIdentity)
66         fromOperations.operations().append(IdentityTransformOperation::create());
67     else
68         fromOperations.operations().append(const_cast<TransformOperation*>(from));
69     return InterpolatedTransformOperation::create(thisOperations, fromOperations, progress);
70 }
71 
72 } // namespace blink
73 
74