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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>
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);
}
already_AddRefed<DOMMatrixReadOnly> DOMMatrixReadOnly::Constructor(
const GlobalObject& aGlobal,
const Optional<StringOrUnrestrictedDoubleSequence>& aArg,
ErrorResult& aRv) {
RefPtr<DOMMatrixReadOnly> rval =
new DOMMatrixReadOnly(aGlobal.GetAsSupports());
if (!aArg.WasPassed()) {
return rval.forget();
}
const auto& arg = aArg.Value();
if (arg.IsString()) {
nsCOMPtr<nsPIDOMWindowInner> win =
do_QueryInterface(aGlobal.GetAsSupports());
if (!win) {
aRv.ThrowTypeError<MSG_ILLEGAL_CONSTRUCTOR>();
return nullptr;
}
rval->SetMatrixValue(arg.GetAsString(), aRv);
} else {
const auto& sequence = arg.GetAsUnrestrictedDoubleSequence();
SetDataInMatrix(rval, sequence.Elements(), sequence.Length(), aRv);
}
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 aScale,
double aOriginX,
double aOriginY) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->ScaleSelf(aScale, aOriginX, aOriginY);
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, double aScaleZ, double aOriginX,
double aOriginY, double aOriginZ) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->ScaleNonUniformSelf(aScaleX, aScaleY, aScaleZ, aOriginX, aOriginY,
aOriginZ);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::Rotate(double aAngle,
double aOriginX,
double aOriginY) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->RotateSelf(aAngle, aOriginX, aOriginY);
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 DOMMatrix& other) const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
retval->MultiplySelf(other);
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::FlipX() const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
if (mMatrix3D) {
gfx::Matrix4x4 m;
m._11 = -1;
retval->mMatrix3D = new gfx::Matrix4x4(m * *mMatrix3D);
} else {
gfx::Matrix m;
m._11 = -1;
retval->mMatrix2D = new gfx::Matrix(mMatrix2D ? m * *mMatrix2D : m);
}
return retval.forget();
}
already_AddRefed<DOMMatrix> DOMMatrixReadOnly::FlipY() const {
RefPtr<DOMMatrix> retval = new DOMMatrix(mParent, *this);
if (mMatrix3D) {
gfx::Matrix4x4 m;
m._22 = -1;
retval->mMatrix3D = new gfx::Matrix4x4(m * *mMatrix3D);
} else {
gfx::Matrix m;
m._22 = -1;
retval->mMatrix2D = new gfx::Matrix(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::Matrix4x4 tempMatrix(gfx::Matrix4x4::From2D(*mMatrix2D));
gfx::Point4D 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::Point 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());
}
// Convenient way to append things as floats, not doubles. We use this because
// we only want to output about 6 digits of precision for our matrix()
// functions, to preserve the behavior we used to have when we used
// AppendPrintf.
static void AppendFloat(nsAString& aStr, float f) { aStr.AppendFloat(f); }
void DOMMatrixReadOnly::Stringify(nsAString& aResult) {
nsAutoString matrixStr;
if (mMatrix3D) {
// We can't use AppendPrintf here, because it does locale-specific
// formatting of floating-point values.
matrixStr.AssignLiteral("matrix3d(");
AppendFloat(matrixStr, M11());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M12());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M13());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M14());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M21());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M22());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M23());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M24());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M31());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M32());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M33());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M34());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M41());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M42());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M43());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, M44());
matrixStr.AppendLiteral(")");
} else {
// We can't use AppendPrintf here, because it does locale-specific
// formatting of floating-point values.
matrixStr.AssignLiteral("matrix(");
AppendFloat(matrixStr, A());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, B());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, C());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, D());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, E());
matrixStr.AppendLiteral(", ");
AppendFloat(matrixStr, F());
matrixStr.AppendLiteral(")");
}
aResult = matrixStr;
}
already_AddRefed<DOMMatrix> DOMMatrix::Constructor(const GlobalObject& aGlobal,
ErrorResult& aRv) {
RefPtr<DOMMatrix> obj = new DOMMatrix(aGlobal.GetAsSupports());
return obj.forget();
}
already_AddRefed<DOMMatrix> DOMMatrix::Constructor(
const GlobalObject& aGlobal, const nsAString& aTransformList,
ErrorResult& aRv) {
RefPtr<DOMMatrix> obj = new DOMMatrix(aGlobal.GetAsSupports());
obj = obj->SetMatrixValue(aTransformList, aRv);
return obj.forget();
}
already_AddRefed<DOMMatrix> DOMMatrix::Constructor(
const GlobalObject& aGlobal, const DOMMatrixReadOnly& aOther,
ErrorResult& aRv) {
RefPtr<DOMMatrix> obj = new DOMMatrix(aGlobal.GetAsSupports(), aOther);
return obj.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::Constructor(const GlobalObject& aGlobal,
const Float32Array& aArray32,
ErrorResult& aRv) {
RefPtr<DOMMatrix> obj = new DOMMatrix(aGlobal.GetAsSupports());
aArray32.ComputeLengthAndData();
SetDataInMatrix(obj, aArray32.Data(), aArray32.Length(), aRv);
return obj.forget();
}
already_AddRefed<DOMMatrix> DOMMatrix::Constructor(const GlobalObject& aGlobal,
const Float64Array& aArray64,
ErrorResult& aRv) {
RefPtr<DOMMatrix> obj = new DOMMatrix(aGlobal.GetAsSupports());
aArray64.ComputeLengthAndData();
SetDataInMatrix(obj, aArray64.Data(), aArray64.Length(), aRv);
return obj.forget();
}
already_AddRefed<DOMMatrix> DOMMatrix::Constructor(
const GlobalObject& aGlobal, const Sequence<double>& aNumberSequence,
ErrorResult& aRv) {
RefPtr<DOMMatrix> obj = new DOMMatrix(aGlobal.GetAsSupports());
SetDataInMatrix(obj, aNumberSequence.Elements(), aNumberSequence.Length(),
aRv);
return obj.forget();
}
void DOMMatrixReadOnly::Ensure3DMatrix() {
if (!mMatrix3D) {
mMatrix3D = new gfx::Matrix4x4(gfx::Matrix4x4::From2D(*mMatrix2D));
mMatrix2D = nullptr;
}
}
DOMMatrix* DOMMatrix::MultiplySelf(const DOMMatrix& aOther) {
if (aOther.IsIdentity()) {
return this;
}
if (aOther.Is2D()) {
if (mMatrix3D) {
*mMatrix3D = gfx::Matrix4x4::From2D(*aOther.mMatrix2D) * *mMatrix3D;
} else {
*mMatrix2D = *aOther.mMatrix2D * *mMatrix2D;
}
} else {
Ensure3DMatrix();
*mMatrix3D = *aOther.mMatrix3D * *mMatrix3D;
}
return this;
}
DOMMatrix* DOMMatrix::PreMultiplySelf(const DOMMatrix& aOther) {
if (aOther.IsIdentity()) {
return this;
}
if (aOther.Is2D()) {
if (mMatrix3D) {
*mMatrix3D = *mMatrix3D * gfx::Matrix4x4::From2D(*aOther.mMatrix2D);
} else {
*mMatrix2D = *mMatrix2D * *aOther.mMatrix2D;
}
} else {
Ensure3DMatrix();
*mMatrix3D = *mMatrix3D * *aOther.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 aScale, double aOriginX,
double aOriginY) {
ScaleNonUniformSelf(aScale, aScale, 1.0, aOriginX, aOriginY, 0);
return this;
}
DOMMatrix* DOMMatrix::Scale3dSelf(double aScale, double aOriginX,
double aOriginY, double aOriginZ) {
ScaleNonUniformSelf(aScale, aScale, aScale, aOriginX, aOriginY, aOriginZ);
return this;
}
DOMMatrix* DOMMatrix::ScaleNonUniformSelf(double aScaleX, double aScaleY,
double aScaleZ, double aOriginX,
double aOriginY, double aOriginZ) {
if (aScaleX == 1.0 && aScaleY == 1.0 && aScaleZ == 1.0) {
return this;
}
TranslateSelf(aOriginX, aOriginY, aOriginZ);
if (mMatrix3D || aScaleZ != 1.0 || aOriginZ != 0) {
Ensure3DMatrix();
gfx::Matrix4x4 m;
m._11 = aScaleX;
m._22 = aScaleY;
m._33 = aScaleZ;
*mMatrix3D = m * *mMatrix3D;
} else {
gfx::Matrix m;
m._11 = aScaleX;
m._22 = aScaleY;
*mMatrix2D = m * *mMatrix2D;
}
TranslateSelf(-aOriginX, -aOriginY, -aOriginZ);
return this;
}
DOMMatrix* DOMMatrix::RotateFromVectorSelf(double aX, double aY) {
if (aX == 0.0 || aY == 0.0) {
return this;
}
RotateSelf(atan2(aY, aX) / radPerDegree);
return this;
}
DOMMatrix* DOMMatrix::RotateSelf(double aAngle, double aOriginX,
double aOriginY) {
if (fmod(aAngle, 360) == 0) {
return this;
}
TranslateSelf(aOriginX, aOriginY);
if (mMatrix3D) {
RotateAxisAngleSelf(0, 0, 1, aAngle);
} else {
*mMatrix2D = mMatrix2D->PreRotate(aAngle * radPerDegree);
}
TranslateSelf(-aOriginX, -aOriginY);
return this;
}
DOMMatrix* DOMMatrix::RotateAxisAngleSelf(double aX, double aY, double aZ,
double aAngle) {
if (fmod(aAngle, 360) == 0) {
return this;
}
aAngle *= radPerDegree;
Ensure3DMatrix();
gfx::Matrix4x4 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::Matrix4x4 m;
m._21 = tan(aSx * radPerDegree);
*mMatrix3D = m * *mMatrix3D;
} else {
gfx::Matrix 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::Matrix4x4 m;
m._12 = tan(aSy * radPerDegree);
*mMatrix3D = m * *mMatrix3D;
} else {
gfx::Matrix 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::Matrix4x4();
mMatrix3D->SetNAN();
}
return this;
}
DOMMatrixReadOnly* DOMMatrixReadOnly::SetMatrixValue(
const nsAString& 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;
mMatrix2D = new gfx::Matrix();
SetA(transform._11);
SetB(transform._12);
SetC(transform._21);
SetD(transform._22);
SetE(transform._41);
SetF(transform._42);
} else {
mMatrix3D = new gfx::Matrix4x4(transform);
mMatrix2D = nullptr;
}
return this;
}
DOMMatrix* DOMMatrix::SetMatrixValue(const nsAString& 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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