mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
73 lines
3.0 KiB
C++
73 lines
3.0 KiB
C++
/*
|
|
* Copyright (C) 2013 Google Inc. 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.
|
|
* * Neither the name of Google Inc. nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* 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
|
|
* OWNER 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.
|
|
*/
|
|
|
|
#include "flutter/sky/engine/platform/transforms/InterpolatedTransformOperation.h"
|
|
|
|
#include "flutter/sky/engine/platform/transforms/IdentityTransformOperation.h"
|
|
|
|
namespace blink {
|
|
|
|
bool InterpolatedTransformOperation::operator==(const TransformOperation& o) const
|
|
{
|
|
if (!isSameType(o))
|
|
return false;
|
|
const InterpolatedTransformOperation* t = static_cast<const InterpolatedTransformOperation*>(&o);
|
|
return progress == t->progress && from == t->from && to == t->to;
|
|
}
|
|
|
|
void InterpolatedTransformOperation::apply(TransformationMatrix& transform, const FloatSize& borderBoxSize) const
|
|
{
|
|
TransformationMatrix fromTransform;
|
|
TransformationMatrix toTransform;
|
|
from.apply(borderBoxSize, fromTransform);
|
|
to.apply(borderBoxSize, toTransform);
|
|
|
|
toTransform.blend(fromTransform, progress);
|
|
transform.multiply(toTransform);
|
|
}
|
|
|
|
PassRefPtr<TransformOperation> InterpolatedTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity)
|
|
{
|
|
if (from && !from->isSameType(*this))
|
|
return this;
|
|
|
|
TransformOperations thisOperations;
|
|
thisOperations.operations().append(this);
|
|
TransformOperations fromOperations;
|
|
if (blendToIdentity)
|
|
fromOperations.operations().append(IdentityTransformOperation::create());
|
|
else
|
|
fromOperations.operations().append(const_cast<TransformOperation*>(from));
|
|
return InterpolatedTransformOperation::create(thisOperations, fromOperations, progress);
|
|
}
|
|
|
|
} // namespace blink
|
|
|