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77 lines
3.0 KiB
C++
77 lines
3.0 KiB
C++
/*
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* Copyright (C) 2013 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "flutter/sky/engine/platform/transforms/InterpolatedTransformOperation.h"
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#include "flutter/sky/engine/platform/transforms/IdentityTransformOperation.h"
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namespace blink {
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bool InterpolatedTransformOperation::operator==(
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const TransformOperation& o) const {
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if (!isSameType(o))
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return false;
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const InterpolatedTransformOperation* t =
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static_cast<const InterpolatedTransformOperation*>(&o);
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return progress == t->progress && from == t->from && to == t->to;
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}
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void InterpolatedTransformOperation::apply(
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TransformationMatrix& transform,
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const FloatSize& borderBoxSize) const {
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TransformationMatrix fromTransform;
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TransformationMatrix toTransform;
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from.apply(borderBoxSize, fromTransform);
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to.apply(borderBoxSize, toTransform);
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toTransform.blend(fromTransform, progress);
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transform.multiply(toTransform);
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}
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PassRefPtr<TransformOperation> InterpolatedTransformOperation::blend(
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const TransformOperation* from,
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double progress,
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bool blendToIdentity) {
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if (from && !from->isSameType(*this))
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return this;
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TransformOperations thisOperations;
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thisOperations.operations().append(this);
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TransformOperations fromOperations;
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if (blendToIdentity)
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fromOperations.operations().append(IdentityTransformOperation::create());
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else
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fromOperations.operations().append(const_cast<TransformOperation*>(from));
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return InterpolatedTransformOperation::create(thisOperations, fromOperations,
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progress);
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}
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} // namespace blink
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