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/*
* 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 "third_party/blink/renderer/platform/transforms/interpolated_transform_operation.h"
#include "third_party/blink/renderer/platform/transforms/identity_transform_operation.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& border_box_size) const {
TransformationMatrix from_transform;
TransformationMatrix to_transform;
from.ApplyRemaining(border_box_size, starting_index, from_transform);
to.ApplyRemaining(border_box_size, starting_index, to_transform);
to_transform.Blend(from_transform, progress);
transform.Multiply(to_transform);
}
scoped_refptr<TransformOperation> InterpolatedTransformOperation::Blend(
const TransformOperation* from,
double progress,
bool blend_to_identity) {
if (from && !from->IsSameType(*this))
return this;
TransformOperations this_operations;
this_operations.Operations().push_back(this);
TransformOperations from_operations;
if (blend_to_identity)
from_operations.Operations().push_back(
IdentityTransformOperation::Create());
else
from_operations.Operations().push_back(
const_cast<TransformOperation*>(from));
return InterpolatedTransformOperation::Create(this_operations,
from_operations, 0, progress);
}
} // namespace blink
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