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gecko-dev/dom/base/DOMMatrix.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/DOMMatrix.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/DOMMatrixBinding.h"
#include "mozilla/dom/DOMPoint.h"
#include "mozilla/dom/DOMPointBinding.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/ServoCSSParser.h"
#include "nsGlobalWindowInner.h"
#include "nsStyleTransformMatrix.h"
#include "nsGlobalWindowInner.h"
#include <math.h>
#include "js/Conversions.h" // JS::NumberToString
#include "js/Equality.h" // JS::SameValueZero
namespace mozilla {
namespace dom {
template <typename T>
static void SetDataInMatrix(DOMMatrixReadOnly* aMatrix, const T* aData,
int aLength, ErrorResult& aRv);
static const double radPerDegree = 2.0 * M_PI / 360.0;
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMMatrixReadOnly, mParent)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(DOMMatrixReadOnly, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(DOMMatrixReadOnly, Release)
JSObject* DOMMatrixReadOnly::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return DOMMatrixReadOnly_Binding::Wrap(aCx, this, aGivenProto);
}
// https://drafts.fxtf.org/geometry/#matrix-validate-and-fixup-2d
static bool ValidateAndFixupMatrix2DInit(DOMMatrix2DInit& aMatrixInit,
ErrorResult& aRv) {
#define ValidateAliases(field, alias, fieldName, aliasName) \
if ((field).WasPassed() && (alias).WasPassed() && \
!JS::SameValueZero((field).Value(), (alias).Value())) { \
aRv.ThrowTypeError<MSG_MATRIX_INIT_CONFLICTING_VALUE>((fieldName), \
(aliasName)); \
return false; \
}
#define SetFromAliasOrDefault(field, alias, defaultValue) \
if (!(field).WasPassed()) { \
if ((alias).WasPassed()) { \
(field).Construct((alias).Value()); \
} else { \
(field).Construct(defaultValue); \
} \
}
#define ValidateAndSet(field, alias, fieldName, aliasName, defaultValue) \
ValidateAliases((field), (alias), NS_LITERAL_STRING(fieldName), \
NS_LITERAL_STRING(aliasName)); \
SetFromAliasOrDefault((field), (alias), (defaultValue));
ValidateAndSet(aMatrixInit.mM11, aMatrixInit.mA, "m11", "a", 1);
ValidateAndSet(aMatrixInit.mM12, aMatrixInit.mB, "m12", "b", 0);
ValidateAndSet(aMatrixInit.mM21, aMatrixInit.mC, "m21", "c", 0);
ValidateAndSet(aMatrixInit.mM22, aMatrixInit.mD, "m22", "d", 1);
ValidateAndSet(aMatrixInit.mM41, aMatrixInit.mE, "m41", "e", 0);
ValidateAndSet(aMatrixInit.mM42, aMatrixInit.mF, "m42", "f", 0);
return true;
#undef ValidateAliases
#undef SetFromAliasOrDefault
#undef ValidateAndSet
}
// https://drafts.fxtf.org/geometry/#matrix-validate-and-fixup
static bool ValidateAndFixupMatrixInit(DOMMatrixInit& aMatrixInit,
ErrorResult& aRv) {
#define Check3DField(field, fieldName, defaultValue) \
if ((field) != (defaultValue)) { \
if (!aMatrixInit.mIs2D.WasPassed()) { \
aMatrixInit.mIs2D.Construct(false); \
return true; \
} \
if (aMatrixInit.mIs2D.Value()) { \
aRv.ThrowTypeError<MSG_MATRIX_INIT_EXCEEDS_2D>( \
NS_LITERAL_STRING(fieldName)); \
return false; \
} \
}
if (!ValidateAndFixupMatrix2DInit(aMatrixInit, aRv)) {
return false;
}
Check3DField(aMatrixInit.mM13, "m13", 0);
Check3DField(aMatrixInit.mM14, "m14", 0);
Check3DField(aMatrixInit.mM23, "m23", 0);
Check3DField(aMatrixInit.mM24, "m24", 0);
Check3DField(aMatrixInit.mM31, "m31", 0);
Check3DField(aMatrixInit.mM32, "m32", 0);
Check3DField(aMatrixInit.mM34, "m34", 0);
Check3DField(aMatrixInit.mM43, "m43", 0);
Check3DField(aMatrixInit.mM33, "m33", 1);
Check3DField(aMatrixInit.mM44, "m44", 1);
if (!aMatrixInit.mIs2D.WasPassed()) {
aMatrixInit.mIs2D.Construct(true);
}
return true;
#undef Check3DField
}
void DOMMatrixReadOnly::SetDataFromMatrix2DInit(
const DOMMatrix2DInit& aMatrixInit) {
MOZ_ASSERT(Is2D());
mMatrix2D->_11 = aMatrixInit.mM11.Value();
mMatrix2D->_12 = aMatrixInit.mM12.Value();
mMatrix2D->_21 = aMatrixInit.mM21.Value();
mMatrix2D->_22 = aMatrixInit.mM22.Value();
mMatrix2D->_31 = aMatrixInit.mM41.Value();
mMatrix2D->_32 = aMatrixInit.mM42.Value();
}
void DOMMatrixReadOnly::SetDataFromMatrixInit(
const DOMMatrixInit& aMatrixInit) {
const bool is2D = aMatrixInit.mIs2D.Value();
MOZ_ASSERT(is2D == Is2D());
if (is2D) {
SetDataFromMatrix2DInit(aMatrixInit);
} else {
mMatrix3D->_11 = aMatrixInit.mM11.Value();
mMatrix3D->_12 = aMatrixInit.mM12.Value();
mMatrix3D->_13 = aMatrixInit.mM13;
mMatrix3D->_14 = aMatrixInit.mM14;
mMatrix3D->_21 = aMatrixInit.mM21.Value();
mMatrix3D->_22 = aMatrixInit.mM22.Value();
mMatrix3D->_23 = aMatrixInit.mM23;
mMatrix3D->_24 = aMatrixInit.mM24;
mMatrix3D->_31 = aMatrixInit.mM31;
mMatrix3D->_32 = aMatrixInit.mM32;
mMatrix3D->_33 = aMatrixInit.mM33;
mMatrix3D->_34 = aMatrixInit.mM34;
mMatrix3D->_41 = aMatrixInit.mM41.Value();
mMatrix3D->_42 = aMatrixInit.mM42.Value();
mMatrix3D->_43 = aMatrixInit.mM43;
mMatrix3D->_44 = aMatrixInit.mM44;
}
}
already_AddRefed<DOMMatrixReadOnly> DOMMatrixReadOnly::FromMatrix(
nsISupports* aParent, const DOMMatrix2DInit& aMatrixInit,
ErrorResult& aRv) {
DOMMatrix2DInit matrixInit(aMatrixInit);
if (!ValidateAndFixupMatrix2DInit(matrixInit, aRv)) {
return nullptr;
};
RefPtr<DOMMatrixReadOnly> matrix =
new DOMMatrixReadOnly(aParent, /* is2D */ true);
matrix->SetDataFromMatrix2DInit(matrixInit);
return matrix.forget();
}
already_AddRefed<DOMMatrixReadOnly> DOMMatrixReadOnly::FromMatrix(
nsISupports* aParent, const DOMMatrixInit& aMatrixInit, ErrorResult& aRv) {
DOMMatrixInit matrixInit(aMatrixInit);
if (!ValidateAndFixupMatrixInit(matrixInit, aRv)) {
return nullptr;
};
RefPtr<DOMMatrixReadOnly> rval =
new DOMMatrixReadOnly(aParent, matrixInit.mIs2D.Value());
rval->SetDataFromMatrixInit(matrixInit);
return rval.forget();
}
already_AddRefed<DOMMatrixReadOnly> DOMMatrixReadOnly::FromMatrix(
const GlobalObject& aGlobal, const DOMMatrixInit& aMatrixInit,
ErrorResult& aRv) {
RefPtr<DOMMatrixReadOnly> matrix =
FromMatrix(aGlobal.GetAsSupports(), aMatrixInit, aRv);
return matrix.forget();
}
already_AddRefed<DOMMatrixReadOnly> DOMMatrixReadOnly::FromFloat32Array(
const GlobalObject& aGlobal, const Float32Array& aArray32,
ErrorResult& aRv) {
aArray32.ComputeState();
const int length = aArray32.Length();
const bool is2D = length == 6;
RefPtr<DOMMatrixReadOnly> obj =
new DOMMatrixReadOnly(aGlobal.GetAsSupports(), is2D);
SetDataInMatrix(obj, aArray32.Data(), length, aRv);
return obj.forget();
}
already_AddRefed<DOMMatrixReadOnly> DOMMatrixReadOnly::FromFloat64Array(
const GlobalObject& aGlobal, const Float64Array& aArray64,
ErrorResult& aRv) {
aArray64.ComputeState();
const int length = aArray64.Length();
const bool is2D = length == 6;
RefPtr<DOMMatrixReadOnly> obj =
new DOMMatrixReadOnly(aGlobal.GetAsSupports(), is2D);
SetDataInMatrix(obj, aArray64.Data(), length, aRv);
return obj.forget();
}
already_AddRefed<DOMMatrixReadOnly> DOMMatrixReadOnly::Constructor(
const GlobalObject& aGlobal,
const Optional<UTF8StringOrUnrestrictedDoubleSequenceOrDOMMatrixReadOnly>&
aArg,
ErrorResult& aRv) {
if (!aArg.WasPassed()) {
RefPtr<DOMMatrixReadOnly> rval =
new DOMMatrixReadOnly(aGlobal.GetAsSupports());
return rval.forget();
}
const auto& arg = aArg.Value();
if (arg.IsUTF8String()) {
nsCOMPtr<nsPIDOMWindowInner> win =
do_QueryInterface(aGlobal.GetAsSupports());
if (!win) {
aRv.ThrowTypeError<MSG_ILLEGAL_CONSTRUCTOR>();
return nullptr;
}
RefPtr<DOMMatrixReadOnly> rval =
new DOMMatrixReadOnly(aGlobal.GetAsSupports());
rval->SetMatrixValue(arg.GetAsUTF8String(), aRv);
return rval.forget();
}
if (arg.IsDOMMatrixReadOnly()) {
RefPtr<DOMMatrixReadOnly> obj = new DOMMatrixReadOnly(
aGlobal.GetAsSupports(), arg.GetAsDOMMatrixReadOnly());
return obj.forget();
}
const auto& sequence = arg.GetAsUnrestrictedDoubleSequence();
const int length = sequence.Length();
const bool is2D = length == 6;
RefPtr<DOMMatrixReadOnly> rval =
new DOMMatrixReadOnly(aGlobal.GetAsSupports(), is2D);
SetDataInMatrix(rval, sequence.Elements(), length, aRv);
return rval.forget();
}
already_AddRefed<DOMMatrixReadOnly> DOMMatrixReadOnly::ReadStructuredClone(
JSContext* aCx, nsIGlobalObject* aGlobal,
JSStructuredCloneReader* aReader) {
uint8_t is2D;
if (!JS_ReadBytes(aReader, &is2D, 1)) {
return nullptr;
}
RefPtr<DOMMatrixReadOnly> rval = new DOMMatrixReadOnly(aGlobal, is2D);
if (!ReadStructuredCloneElements(aReader, rval)) {
return nullptr;
};
return rval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::Translate(double aTx, double aTy,
double aTz) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->TranslateSelf(aTx, aTy, aTz);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::Scale(
double aScaleX, const Optional<double>& aScaleY, double aScaleZ,
double aOriginX, double aOriginY, double aOriginZ) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->ScaleSelf(aScaleX, aScaleY, aScaleZ, aOriginX, aOriginY, aOriginZ);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::Scale3d(double aScale,
double aOriginX,
double aOriginY,
double aOriginZ) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->Scale3dSelf(aScale, aOriginX, aOriginY, aOriginZ);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::ScaleNonUniform(
double aScaleX, double aScaleY) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->ScaleSelf(aScaleX, Optional<double>(aScaleY), 1, 0, 0, 0);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::Rotate(
double aRotX, const Optional<double>& aRotY,
const Optional<double>& aRotZ) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->RotateSelf(aRotX, aRotY, aRotZ);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::RotateFromVector(
double x, double y) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->RotateFromVectorSelf(x, y);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::RotateAxisAngle(
double aX, double aY, double aZ, double aAngle) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->RotateAxisAngleSelf(aX, aY, aZ, aAngle);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::SkewX(double aSx) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->SkewXSelf(aSx);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::SkewY(double aSy) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->SkewYSelf(aSy);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::Multiply(
const DOMMatrixInit& other, ErrorResult& aRv) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->MultiplySelf(other, aRv);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::FlipX() const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
if (mMatrix3D) {
gfx::Matrix4x4Double m;
m._11 = -1;
retval->mMatrix3D = new gfx::Matrix4x4Double(m * *mMatrix3D);
} else {
gfx::MatrixDouble m;
m._11 = -1;
retval->mMatrix2D = new gfx::MatrixDouble(mMatrix2D ? m * *mMatrix2D : m);
}
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::FlipY() const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
if (mMatrix3D) {
gfx::Matrix4x4Double m;
m._22 = -1;
retval->mMatrix3D = new gfx::Matrix4x4Double(m * *mMatrix3D);
} else {
gfx::MatrixDouble m;
m._22 = -1;
retval->mMatrix2D = new gfx::MatrixDouble(mMatrix2D ? m * *mMatrix2D : m);
}
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::Inverse() const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->InvertSelf();
return retval.forget();
}
bool DOMMatrixReadOnly::Is2D() const { return !mMatrix3D; }
bool DOMMatrixReadOnly::IsIdentity() const {
if (mMatrix3D) {
return mMatrix3D->IsIdentity();
}
return mMatrix2D->IsIdentity();
}
already_AddRefed<DOMPoint> DOMMatrixReadOnly::TransformPoint(
const DOMPointInit& point) const {
RefPtr<DOMPoint> retval = new DOMPoint(mParent);
if (mMatrix3D) {
gfx::Point4D transformedPoint;
transformedPoint.x = point.mX;
transformedPoint.y = point.mY;
transformedPoint.z = point.mZ;
transformedPoint.w = point.mW;
transformedPoint = mMatrix3D->TransformPoint(transformedPoint);
retval->SetX(transformedPoint.x);
retval->SetY(transformedPoint.y);
retval->SetZ(transformedPoint.z);
retval->SetW(transformedPoint.w);
} else if (point.mZ != 0 || point.mW != 1.0) {
gfx::Matrix4x4Double tempMatrix(gfx::Matrix4x4Double::From2D(*mMatrix2D));
gfx::PointDouble4D transformedPoint;
transformedPoint.x = point.mX;
transformedPoint.y = point.mY;
transformedPoint.z = point.mZ;
transformedPoint.w = point.mW;
transformedPoint = tempMatrix.TransformPoint(transformedPoint);
retval->SetX(transformedPoint.x);
retval->SetY(transformedPoint.y);
retval->SetZ(transformedPoint.z);
retval->SetW(transformedPoint.w);
} else {
gfx::PointDouble transformedPoint;
transformedPoint.x = point.mX;
transformedPoint.y = point.mY;
transformedPoint = mMatrix2D->TransformPoint(transformedPoint);
retval->SetX(transformedPoint.x);
retval->SetY(transformedPoint.y);
retval->SetZ(point.mZ);
retval->SetW(point.mW);
}
return retval.forget();
}
template <typename T>
void GetDataFromMatrix(const DOMMatrixReadOnly* aMatrix, T* aData) {
aData[0] = static_cast<T>(aMatrix->M11());
aData[1] = static_cast<T>(aMatrix->M12());
aData[2] = static_cast<T>(aMatrix->M13());
aData[3] = static_cast<T>(aMatrix->M14());
aData[4] = static_cast<T>(aMatrix->M21());
aData[5] = static_cast<T>(aMatrix->M22());
aData[6] = static_cast<T>(aMatrix->M23());
aData[7] = static_cast<T>(aMatrix->M24());
aData[8] = static_cast<T>(aMatrix->M31());
aData[9] = static_cast<T>(aMatrix->M32());
aData[10] = static_cast<T>(aMatrix->M33());
aData[11] = static_cast<T>(aMatrix->M34());
aData[12] = static_cast<T>(aMatrix->M41());
aData[13] = static_cast<T>(aMatrix->M42());
aData[14] = static_cast<T>(aMatrix->M43());
aData[15] = static_cast<T>(aMatrix->M44());
}
void DOMMatrixReadOnly::ToFloat32Array(JSContext* aCx,
JS::MutableHandle<JSObject*> aResult,
ErrorResult& aRv) const {
AutoTArray<float, 16> arr;
arr.SetLength(16);
GetDataFromMatrix(this, arr.Elements());
JS::Rooted<JS::Value> value(aCx);
if (!ToJSValue(aCx, TypedArrayCreator<Float32Array>(arr), &value)) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
aResult.set(&value.toObject());
}
void DOMMatrixReadOnly::ToFloat64Array(JSContext* aCx,
JS::MutableHandle<JSObject*> aResult,
ErrorResult& aRv) const {
AutoTArray<double, 16> arr;
arr.SetLength(16);
GetDataFromMatrix(this, arr.Elements());
JS::Rooted<JS::Value> value(aCx);
if (!ToJSValue(aCx, TypedArrayCreator<Float64Array>(arr), &value)) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
aResult.set(&value.toObject());
}
void DOMMatrixReadOnly::Stringify(nsAString& aResult, ErrorResult& aRv) {
char cbuf[JS::MaximumNumberToStringLength];
nsAutoString matrixStr;
auto AppendDouble = [&aRv, &cbuf, &matrixStr](double d,
bool isLastItem = false) {
if (!mozilla::IsFinite(d)) {
aRv.ThrowInvalidStateError(
"Matrix with a non-finite element cannot be stringified.");
return false;
}
JS::NumberToString(d, cbuf);
matrixStr.AppendASCII(cbuf);
if (!isLastItem) {
matrixStr.AppendLiteral(", ");
}
return true;
};
if (mMatrix3D) {
// We can't use AppendPrintf here, because it does locale-specific
// formatting of floating-point values.
matrixStr.AssignLiteral("matrix3d(");
if (!AppendDouble(M11()) || !AppendDouble(M12()) || !AppendDouble(M13()) ||
!AppendDouble(M14()) || !AppendDouble(M21()) || !AppendDouble(M22()) ||
!AppendDouble(M23()) || !AppendDouble(M24()) || !AppendDouble(M31()) ||
!AppendDouble(M32()) || !AppendDouble(M33()) || !AppendDouble(M34()) ||
!AppendDouble(M41()) || !AppendDouble(M42()) || !AppendDouble(M43()) ||
!AppendDouble(M44(), true)) {
return;
}
matrixStr.AppendLiteral(")");
} else {
// We can't use AppendPrintf here, because it does locale-specific
// formatting of floating-point values.
matrixStr.AssignLiteral("matrix(");
if (!AppendDouble(A()) || !AppendDouble(B()) || !AppendDouble(C()) ||
!AppendDouble(D()) || !AppendDouble(E()) || !AppendDouble(F(), true)) {
return;
}
matrixStr.AppendLiteral(")");
}
aResult = matrixStr;
}
// https://drafts.fxtf.org/geometry/#structured-serialization
bool DOMMatrixReadOnly::WriteStructuredClone(
JSContext* aCx, JSStructuredCloneWriter* aWriter) const {
#define WriteDouble(d) \
JS_WriteUint32Pair(aWriter, (BitwiseCast<uint64_t>(d) >> 32) & 0xffffffff, \
BitwiseCast<uint64_t>(d) & 0xffffffff)
const uint8_t is2D = Is2D();
if (!JS_WriteBytes(aWriter, &is2D, 1)) {
return false;
}
if (is2D == 1) {
return WriteDouble(mMatrix2D->_11) && WriteDouble(mMatrix2D->_12) &&
WriteDouble(mMatrix2D->_21) && WriteDouble(mMatrix2D->_22) &&
WriteDouble(mMatrix2D->_31) && WriteDouble(mMatrix2D->_32);
}
return WriteDouble(mMatrix3D->_11) && WriteDouble(mMatrix3D->_12) &&
WriteDouble(mMatrix3D->_13) && WriteDouble(mMatrix3D->_14) &&
WriteDouble(mMatrix3D->_21) && WriteDouble(mMatrix3D->_22) &&
WriteDouble(mMatrix3D->_23) && WriteDouble(mMatrix3D->_24) &&
WriteDouble(mMatrix3D->_31) && WriteDouble(mMatrix3D->_32) &&
WriteDouble(mMatrix3D->_33) && WriteDouble(mMatrix3D->_34) &&
WriteDouble(mMatrix3D->_41) && WriteDouble(mMatrix3D->_42) &&
WriteDouble(mMatrix3D->_43) && WriteDouble(mMatrix3D->_44);
#undef WriteDouble
}
bool DOMMatrixReadOnly::ReadStructuredCloneElements(
JSStructuredCloneReader* aReader, DOMMatrixReadOnly* matrix) {
uint32_t high;
uint32_t low;
#define ReadDouble(d) \
if (!JS_ReadUint32Pair(aReader, &high, &low)) { \
return false; \
} \
(*(d) = BitwiseCast<double>(static_cast<uint64_t>(high) << 32 | low))
if (matrix->Is2D() == 1) {
ReadDouble(&(matrix->mMatrix2D->_11));
ReadDouble(&(matrix->mMatrix2D->_12));
ReadDouble(&(matrix->mMatrix2D->_21));
ReadDouble(&(matrix->mMatrix2D->_22));
ReadDouble(&(matrix->mMatrix2D->_31));
ReadDouble(&(matrix->mMatrix2D->_32));
} else {
ReadDouble(&(matrix->mMatrix3D->_11));
ReadDouble(&(matrix->mMatrix3D->_12));
ReadDouble(&(matrix->mMatrix3D->_13));
ReadDouble(&(matrix->mMatrix3D->_14));
ReadDouble(&(matrix->mMatrix3D->_21));
ReadDouble(&(matrix->mMatrix3D->_22));
ReadDouble(&(matrix->mMatrix3D->_23));
ReadDouble(&(matrix->mMatrix3D->_24));
ReadDouble(&(matrix->mMatrix3D->_31));
ReadDouble(&(matrix->mMatrix3D->_32));
ReadDouble(&(matrix->mMatrix3D->_33));
ReadDouble(&(matrix->mMatrix3D->_34));
ReadDouble(&(matrix->mMatrix3D->_41));
ReadDouble(&(matrix->mMatrix3D->_42));
ReadDouble(&(matrix->mMatrix3D->_43));
ReadDouble(&(matrix->mMatrix3D->_44));
}
return true;
#undef ReadDouble
}
already_AddRefed<DOMMatrix> DOMMatrix::FromMatrix(
nsISupports* aParent, const DOMMatrixInit& aMatrixInit, ErrorResult& aRv) {
DOMMatrixInit matrixInit(aMatrixInit);
if (!ValidateAndFixupMatrixInit(matrixInit, aRv)) {
return nullptr;
};
RefPtr<DOMMatrix> matrix = new DOMMatrix(aParent, matrixInit.mIs2D.Value());
matrix->SetDataFromMatrixInit(matrixInit);
return matrix.forget();
}
already_AddRefed<DOMMatrix> DOMMatrix::FromMatrix(
const GlobalObject& aGlobal, const DOMMatrixInit& aMatrixInit,
ErrorResult& aRv) {
RefPtr<DOMMatrix> matrix =
FromMatrix(aGlobal.GetAsSupports(), aMatrixInit, aRv);
return matrix.forget();
}
already_AddRefed<DOMMatrix> DOMMatrix::FromFloat32Array(
const GlobalObject& aGlobal, const Float32Array& aArray32,
ErrorResult& aRv) {
aArray32.ComputeState();
const int length = aArray32.Length();
const bool is2D = length == 6;
RefPtr<DOMMatrix> obj = new DOMMatrix(aGlobal.GetAsSupports(), is2D);
SetDataInMatrix(obj, aArray32.Data(), length, aRv);
return obj.forget();
}
already_AddRefed<DOMMatrix> DOMMatrix::FromFloat64Array(
const GlobalObject& aGlobal, const Float64Array& aArray64,
ErrorResult& aRv) {
aArray64.ComputeState();
const int length = aArray64.Length();
const bool is2D = length == 6;
RefPtr<DOMMatrix> obj = new DOMMatrix(aGlobal.GetAsSupports(), is2D);
SetDataInMatrix(obj, aArray64.Data(), length, aRv);
return obj.forget();
}
already_AddRefed<DOMMatrix> DOMMatrix::Constructor(
const GlobalObject& aGlobal,
const Optional<UTF8StringOrUnrestrictedDoubleSequenceOrDOMMatrixReadOnly>&
aArg,
ErrorResult& aRv) {
if (!aArg.WasPassed()) {
RefPtr<DOMMatrix> rval = new DOMMatrix(aGlobal.GetAsSupports());
return rval.forget();
}
const auto& arg = aArg.Value();
if (arg.IsUTF8String()) {
nsCOMPtr<nsPIDOMWindowInner> win =
do_QueryInterface(aGlobal.GetAsSupports());
if (!win) {
aRv.ThrowTypeError<MSG_ILLEGAL_CONSTRUCTOR>();
return nullptr;
}
RefPtr<DOMMatrix> rval = new DOMMatrix(aGlobal.GetAsSupports());
rval->SetMatrixValue(arg.GetAsUTF8String(), aRv);
return rval.forget();
}
if (arg.IsDOMMatrixReadOnly()) {
RefPtr<DOMMatrix> obj =
new DOMMatrix(aGlobal.GetAsSupports(), arg.GetAsDOMMatrixReadOnly());
return obj.forget();
}
const auto& sequence = arg.GetAsUnrestrictedDoubleSequence();
const int length = sequence.Length();
const bool is2D = length == 6;
RefPtr<DOMMatrix> rval = new DOMMatrix(aGlobal.GetAsSupports(), is2D);
SetDataInMatrix(rval, sequence.Elements(), length, aRv);
return rval.forget();
}
template <typename T>
static void SetDataInMatrix(DOMMatrixReadOnly* aMatrix, const T* aData,
int aLength, ErrorResult& aRv) {
if (aLength == 16) {
aMatrix->SetM11(aData[0]);
aMatrix->SetM12(aData[1]);
aMatrix->SetM13(aData[2]);
aMatrix->SetM14(aData[3]);
aMatrix->SetM21(aData[4]);
aMatrix->SetM22(aData[5]);
aMatrix->SetM23(aData[6]);
aMatrix->SetM24(aData[7]);
aMatrix->SetM31(aData[8]);
aMatrix->SetM32(aData[9]);
aMatrix->SetM33(aData[10]);
aMatrix->SetM34(aData[11]);
aMatrix->SetM41(aData[12]);
aMatrix->SetM42(aData[13]);
aMatrix->SetM43(aData[14]);
aMatrix->SetM44(aData[15]);
} else if (aLength == 6) {
aMatrix->SetA(aData[0]);
aMatrix->SetB(aData[1]);
aMatrix->SetC(aData[2]);
aMatrix->SetD(aData[3]);
aMatrix->SetE(aData[4]);
aMatrix->SetF(aData[5]);
} else {
nsAutoString lengthStr;
lengthStr.AppendInt(aLength);
aRv.ThrowTypeError<MSG_MATRIX_INIT_LENGTH_WRONG>(lengthStr);
}
}
already_AddRefed<DOMMatrix> DOMMatrix::ReadStructuredClone(
JSContext* aCx, nsIGlobalObject* aGlobal,
JSStructuredCloneReader* aReader) {
uint8_t is2D;
if (!JS_ReadBytes(aReader, &is2D, 1)) {
return nullptr;
}
RefPtr<DOMMatrix> rval = new DOMMatrix(aGlobal, is2D);
if (!ReadStructuredCloneElements(aReader, rval)) {
return nullptr;
};
return rval.forget();
}
void DOMMatrixReadOnly::Ensure3DMatrix() {
if (!mMatrix3D) {
mMatrix3D =
new gfx::Matrix4x4Double(gfx::Matrix4x4Double::From2D(*mMatrix2D));
mMatrix2D = nullptr;
}
}
DOMMatrix* DOMMatrix::MultiplySelf(const DOMMatrixInit& aOtherInit,
ErrorResult& aRv) {
RefPtr<DOMMatrix> other = FromMatrix(mParent, aOtherInit, aRv);
if (other->IsIdentity()) {
return this;
}
if (other->Is2D()) {
if (mMatrix3D) {
*mMatrix3D = gfx::Matrix4x4Double::From2D(*other->mMatrix2D) * *mMatrix3D;
} else {
*mMatrix2D = *other->mMatrix2D * *mMatrix2D;
}
} else {
Ensure3DMatrix();
*mMatrix3D = *other->mMatrix3D * *mMatrix3D;
}
return this;
}
DOMMatrix* DOMMatrix::PreMultiplySelf(const DOMMatrixInit& aOtherInit,
ErrorResult& aRv) {
RefPtr<DOMMatrix> other = FromMatrix(mParent, aOtherInit, aRv);
if (other->IsIdentity()) {
return this;
}
if (other->Is2D()) {
if (mMatrix3D) {
*mMatrix3D = *mMatrix3D * gfx::Matrix4x4Double::From2D(*other->mMatrix2D);
} else {
*mMatrix2D = *mMatrix2D * *other->mMatrix2D;
}
} else {
Ensure3DMatrix();
*mMatrix3D = *mMatrix3D * *other->mMatrix3D;
}
return this;
}
DOMMatrix* DOMMatrix::TranslateSelf(double aTx, double aTy, double aTz) {
if (aTx == 0 && aTy == 0 && aTz == 0) {
return this;
}
if (mMatrix3D || aTz != 0) {
Ensure3DMatrix();
mMatrix3D->PreTranslate(aTx, aTy, aTz);
} else {
mMatrix2D->PreTranslate(aTx, aTy);
}
return this;
}
DOMMatrix* DOMMatrix::ScaleSelf(double aScaleX, const Optional<double>& aScaleY,
double aScaleZ, double aOriginX,
double aOriginY, double aOriginZ) {
const double scaleY = aScaleY.WasPassed() ? aScaleY.Value() : aScaleX;
TranslateSelf(aOriginX, aOriginY, aOriginZ);
if (mMatrix3D || aScaleZ != 1.0) {
Ensure3DMatrix();
gfx::Matrix4x4Double m;
m._11 = aScaleX;
m._22 = scaleY;
m._33 = aScaleZ;
*mMatrix3D = m * *mMatrix3D;
} else {
gfx::MatrixDouble m;
m._11 = aScaleX;
m._22 = scaleY;
*mMatrix2D = m * *mMatrix2D;
}
TranslateSelf(-aOriginX, -aOriginY, -aOriginZ);
return this;
}
DOMMatrix* DOMMatrix::Scale3dSelf(double aScale, double aOriginX,
double aOriginY, double aOriginZ) {
ScaleSelf(aScale, Optional<double>(aScale), aScale, aOriginX, aOriginY,
aOriginZ);
return this;
}
DOMMatrix* DOMMatrix::RotateFromVectorSelf(double aX, double aY) {
const double angle = (aX == 0.0 && aY == 0.0) ? 0 : atan2(aY, aX);
if (fmod(angle, 2 * M_PI) == 0) {
return this;
}
if (mMatrix3D) {
RotateAxisAngleSelf(0, 0, 1, angle / radPerDegree);
} else {
*mMatrix2D = mMatrix2D->PreRotate(angle);
}
return this;
}
DOMMatrix* DOMMatrix::RotateSelf(double aRotX, const Optional<double>& aRotY,
const Optional<double>& aRotZ) {
double rotY;
double rotZ;
if (!aRotY.WasPassed() && !aRotZ.WasPassed()) {
rotZ = aRotX;
aRotX = 0;
rotY = 0;
} else {
rotY = aRotY.WasPassed() ? aRotY.Value() : 0;
rotZ = aRotZ.WasPassed() ? aRotZ.Value() : 0;
}
if (aRotX != 0 || rotY != 0) {
Ensure3DMatrix();
}
if (mMatrix3D) {
if (fmod(rotZ, 360) != 0) {
mMatrix3D->RotateZ(rotZ * radPerDegree);
}
if (fmod(rotY, 360) != 0) {
mMatrix3D->RotateY(rotY * radPerDegree);
}
if (fmod(aRotX, 360) != 0) {
mMatrix3D->RotateX(aRotX * radPerDegree);
}
} else if (fmod(rotZ, 360) != 0) {
*mMatrix2D = mMatrix2D->PreRotate(rotZ * radPerDegree);
}
return this;
}
DOMMatrix* DOMMatrix::RotateAxisAngleSelf(double aX, double aY, double aZ,
double aAngle) {
if (fmod(aAngle, 360) == 0) {
return this;
}
aAngle *= radPerDegree;
Ensure3DMatrix();
gfx::Matrix4x4Double m;
m.SetRotateAxisAngle(aX, aY, aZ, aAngle);
*mMatrix3D = m * *mMatrix3D;
return this;
}
DOMMatrix* DOMMatrix::SkewXSelf(double aSx) {
if (fmod(aSx, 360) == 0) {
return this;
}
if (mMatrix3D) {
gfx::Matrix4x4Double m;
m._21 = tan(aSx * radPerDegree);
*mMatrix3D = m * *mMatrix3D;
} else {
gfx::MatrixDouble m;
m._21 = tan(aSx * radPerDegree);
*mMatrix2D = m * *mMatrix2D;
}
return this;
}
DOMMatrix* DOMMatrix::SkewYSelf(double aSy) {
if (fmod(aSy, 360) == 0) {
return this;
}
if (mMatrix3D) {
gfx::Matrix4x4Double m;
m._12 = tan(aSy * radPerDegree);
*mMatrix3D = m * *mMatrix3D;
} else {
gfx::MatrixDouble m;
m._12 = tan(aSy * radPerDegree);
*mMatrix2D = m * *mMatrix2D;
}
return this;
}
DOMMatrix* DOMMatrix::InvertSelf() {
if (mMatrix3D) {
if (!mMatrix3D->Invert()) {
mMatrix3D->SetNAN();
}
} else if (!mMatrix2D->Invert()) {
mMatrix2D = nullptr;
mMatrix3D = new gfx::Matrix4x4Double();
mMatrix3D->SetNAN();
}
return this;
}
DOMMatrixReadOnly* DOMMatrixReadOnly::SetMatrixValue(
const nsACString& aTransformList, ErrorResult& aRv) {
// An empty string is a no-op.
if (aTransformList.IsEmpty()) {
return this;
}
gfx::Matrix4x4 transform;
bool contains3dTransform = false;
if (!ServoCSSParser::ParseTransformIntoMatrix(
aTransformList, contains3dTransform, transform)) {
aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
return nullptr;
}
if (!contains3dTransform) {
mMatrix3D = nullptr;
if (!mMatrix2D) {
mMatrix2D = new gfx::MatrixDouble();
}
SetA(transform._11);
SetB(transform._12);
SetC(transform._21);
SetD(transform._22);
SetE(transform._41);
SetF(transform._42);
} else {
mMatrix3D = new gfx::Matrix4x4Double(transform);
mMatrix2D = nullptr;
}
return this;
}
DOMMatrix* DOMMatrix::SetMatrixValue(const nsACString& aTransformList,
ErrorResult& aRv) {
DOMMatrixReadOnly::SetMatrixValue(aTransformList, aRv);
return this;
}
JSObject* DOMMatrix::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return DOMMatrix_Binding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla
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