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/*
* Copyright (C) 2023 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "config.h"
#include "AcceleratedEffectValues.h"
#if ENABLE(THREADED_ANIMATION_RESOLUTION)
#include "IntSize.h"
#include "LengthFunctions.h"
#include "MotionPath.h"
#include "Path.h"
#include "RenderElementInlines.h"
#include "RenderLayerModelObject.h"
#include "RenderStyleInlines.h"
#include "TransformOperationData.h"
namespace WebCore {
AcceleratedEffectValues AcceleratedEffectValues::clone() const
{
std::optional<TransformOperationData> clonedTransformOperationData;
if (transformOperationData)
clonedTransformOperationData = transformOperationData;
auto clonedTransformOrigin = transformOrigin;
auto clonedTransform = transform.clone();
RefPtr<TransformOperation> clonedTranslate;
if (auto* srcTranslate = translate.get())
clonedTranslate = srcTranslate->clone();
RefPtr<TransformOperation> clonedScale;
if (auto* srcScale = scale.get())
clonedScale = srcScale->clone();
RefPtr<TransformOperation> clonedRotate;
if (auto* srcRotate = rotate.get())
clonedRotate = srcRotate->clone();
RefPtr<PathOperation> clonedOffsetPath;
if (auto* srcOffsetPath = offsetPath.get())
clonedOffsetPath = srcOffsetPath->clone();
auto clonedOffsetDistance = offsetDistance;
auto clonedOffsetPosition = offsetPosition;
auto clonedOffsetAnchor = offsetAnchor;
auto clonedOffsetRotate = offsetRotate;
auto clonedFilter = filter.clone();
auto clonedBackdropFilter = backdropFilter.clone();
return {
opacity,
WTFMove(clonedTransformOperationData),
WTFMove(clonedTransformOrigin),
transformBox,
WTFMove(clonedTransform),
WTFMove(clonedTranslate),
WTFMove(clonedScale),
WTFMove(clonedRotate),
WTFMove(clonedOffsetPath),
WTFMove(clonedOffsetDistance),
WTFMove(clonedOffsetPosition),
WTFMove(clonedOffsetAnchor),
WTFMove(clonedOffsetRotate),
WTFMove(clonedFilter),
WTFMove(clonedBackdropFilter)
};
}
static LengthPoint nonCalculatedLengthPoint(LengthPoint lengthPoint, const IntSize& borderBoxSize)
{
if (!lengthPoint.x.isCalculated() && !lengthPoint.y.isCalculated())
return lengthPoint;
return {
{ floatValueForLength(lengthPoint.x, borderBoxSize.width()), LengthType::Fixed },
{ floatValueForLength(lengthPoint.y, borderBoxSize.height()), LengthType::Fixed }
};
}
AcceleratedEffectValues::AcceleratedEffectValues(const RenderStyle& style, const IntRect& borderBoxRect, const RenderLayerModelObject* renderer)
{
opacity = style.opacity();
auto borderBoxSize = borderBoxRect.size();
if (renderer)
transformOperationData = TransformOperationData(renderer->transformReferenceBoxRect(style), renderer);
transformBox = style.transformBox();
transform = style.transform().selfOrCopyWithResolvedCalculatedValues(borderBoxSize);
if (auto* srcTranslate = style.translate())
translate = srcTranslate->selfOrCopyWithResolvedCalculatedValues(borderBoxSize);
if (auto* srcScale = style.scale())
scale = srcScale->selfOrCopyWithResolvedCalculatedValues(borderBoxSize);
if (auto* srcRotate = style.rotate())
rotate = srcRotate->selfOrCopyWithResolvedCalculatedValues(borderBoxSize);
transformOrigin = nonCalculatedLengthPoint(style.transformOriginXY(), borderBoxSize);
offsetPath = style.offsetPath();
offsetPosition = nonCalculatedLengthPoint(style.offsetPosition(), borderBoxSize);
offsetAnchor = nonCalculatedLengthPoint(style.offsetAnchor(), borderBoxSize);
offsetRotate = style.offsetRotate();
offsetDistance = style.offsetDistance();
if (offsetDistance.isCalculated() && offsetPath) {
auto anchor = borderBoxRect.location() + floatPointForLengthPoint(transformOrigin, borderBoxSize);
if (!offsetAnchor.x.isAuto())
anchor = floatPointForLengthPoint(offsetAnchor, borderBoxRect.size()) + borderBoxRect.location();
auto path = offsetPath->getPath(TransformOperationData(FloatRect(borderBoxRect)));
offsetDistance = { path ? path->length() : 0.0f, LengthType:: Fixed };
}
filter = style.filter();
backdropFilter = style.backdropFilter();
}
TransformationMatrix AcceleratedEffectValues::computedTransformationMatrix(const FloatRect& boundingBox) const
{
// https://www.w3.org/TR/css-transforms-2/#ctm
// The transformation matrix is computed from the transform, transform-origin, translate, rotate, scale, and offset properties as follows:
// 1. Start with the identity matrix.
TransformationMatrix matrix;
// 2. Translate by the computed X, Y, and Z values of transform-origin.
// (not needed, the GraphicsLayer handles that)
// 3. Translate by the computed X, Y, and Z values of translate.
if (translate)
translate->apply(matrix, boundingBox.size());
// 4. Rotate by the computed <angle> about the specified axis of rotate.
if (rotate)
rotate->apply(matrix, boundingBox.size());
// 5. Scale by the computed X, Y, and Z values of scale.
if (scale)
scale->apply(matrix, boundingBox.size());
// 6. Translate and rotate by the transform specified by offset.
if (transformOperationData && offsetPath) {
auto computedTransformOrigin = boundingBox.location() + floatPointForLengthPoint(transformOrigin, boundingBox.size());
MotionPath::applyMotionPathTransform(matrix, *transformOperationData, computedTransformOrigin, *offsetPath, offsetAnchor, offsetDistance, offsetRotate, transformBox);
}
// 7. Multiply by each of the transform functions in transform from left to right.
transform.apply(matrix, boundingBox.size());
// 8. Translate by the negated computed X, Y and Z values of transform-origin.
// (not needed, the GraphicsLayer handles that)
return matrix;
}
} // namespace WebCore
#endif // ENABLE(THREADED_ANIMATION_RESOLUTION)
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