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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/WebKitCSSMatrix.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/WebKitCSSMatrixBinding.h"
#include "mozilla/Preferences.h"
#include "nsCSSParser.h"
#include "nsStyleTransformMatrix.h"
#include "RuleNodeCacheConditions.h"
namespace mozilla {
namespace dom {
static const double sRadPerDegree = 2.0 * M_PI / 360.0;
bool
WebKitCSSMatrix::FeatureEnabled(JSContext* aCx, JSObject* aObj)
{
return Preferences::GetBool("layout.css.DOMMatrix.enabled", false) &&
Preferences::GetBool("layout.css.prefixes.webkit", false);
}
already_AddRefed<WebKitCSSMatrix>
WebKitCSSMatrix::Constructor(const GlobalObject& aGlobal, ErrorResult& aRv)
{
RefPtr<WebKitCSSMatrix> obj = new WebKitCSSMatrix(aGlobal.GetAsSupports());
return obj.forget();
}
already_AddRefed<WebKitCSSMatrix>
WebKitCSSMatrix::Constructor(const GlobalObject& aGlobal,
const nsAString& aTransformList, ErrorResult& aRv)
{
RefPtr<WebKitCSSMatrix> obj = new WebKitCSSMatrix(aGlobal.GetAsSupports());
obj = obj->SetMatrixValue(aTransformList, aRv);
return obj.forget();
}
already_AddRefed<WebKitCSSMatrix>
WebKitCSSMatrix::Constructor(const GlobalObject& aGlobal,
const DOMMatrixReadOnly& aOther, ErrorResult& aRv)
{
RefPtr<WebKitCSSMatrix> obj = new WebKitCSSMatrix(aGlobal.GetAsSupports(),
aOther);
return obj.forget();
}
JSObject*
WebKitCSSMatrix::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return WebKitCSSMatrixBinding::Wrap(aCx, this, aGivenProto);
}
WebKitCSSMatrix*
WebKitCSSMatrix::SetMatrixValue(const nsAString& aTransformList,
ErrorResult& aRv)
{
// An empty string is a no-op.
if (aTransformList.IsEmpty()) {
return this;
}
nsCSSValue value;
nsCSSParser parser;
bool parseSuccess = parser.ParseTransformProperty(aTransformList,
true,
value);
if (!parseSuccess) {
aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
return nullptr;
}
// A value of "none" results in a 2D identity matrix.
if (value.GetUnit() == eCSSUnit_None) {
mMatrix3D = nullptr;
mMatrix2D = new gfx::Matrix();
return this;
}
// A value other than a transform-list is a syntax error.
if (value.GetUnit() != eCSSUnit_SharedList) {
aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
return nullptr;
}
RuleNodeCacheConditions dummy;
nsStyleTransformMatrix::TransformReferenceBox dummyBox;
bool contains3dTransform = false;
gfx::Matrix4x4 transform = nsStyleTransformMatrix::ReadTransforms(
value.GetSharedListValue()->mHead,
nullptr, nullptr, dummy, dummyBox,
nsPresContext::AppUnitsPerCSSPixel(),
&contains3dTransform);
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;
}
already_AddRefed<WebKitCSSMatrix>
WebKitCSSMatrix::Multiply(const WebKitCSSMatrix& other) const
{
RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
retval->MultiplySelf(other);
return retval.forget();
}
already_AddRefed<WebKitCSSMatrix>
WebKitCSSMatrix::Inverse(ErrorResult& aRv) const
{
RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
retval->InvertSelfThrow(aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
return retval.forget();
}
WebKitCSSMatrix*
WebKitCSSMatrix::InvertSelfThrow(ErrorResult& aRv)
{
if (mMatrix3D) {
if (!mMatrix3D->Invert()) {
aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return nullptr;
}
} else if (!mMatrix2D->Invert()) {
aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return nullptr;
}
return this;
}
already_AddRefed<WebKitCSSMatrix>
WebKitCSSMatrix::Translate(double aTx,
double aTy,
double aTz) const
{
RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
retval->TranslateSelf(aTx, aTy, aTz);
return retval.forget();
}
already_AddRefed<WebKitCSSMatrix>
WebKitCSSMatrix::Scale(double aScaleX,
const Optional<double>& aScaleY,
double aScaleZ) const
{
double scaleX = aScaleX;
double scaleY = aScaleY.WasPassed() ? aScaleY.Value() : scaleX;
double scaleZ = aScaleZ;
RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
retval->ScaleNonUniformSelf(scaleX, scaleY, scaleZ);
return retval.forget();
}
already_AddRefed<WebKitCSSMatrix>
WebKitCSSMatrix::Rotate(double aRotX,
const Optional<double>& aRotY,
const Optional<double>& aRotZ) const
{
double rotX = aRotX;
double rotY;
double rotZ;
if (!aRotY.WasPassed() && !aRotZ.WasPassed()) {
rotZ = rotX;
rotX = 0;
rotY = 0;
} else {
rotY = aRotY.WasPassed() ? aRotY.Value() : 0;
rotZ = aRotZ.WasPassed() ? aRotZ.Value() : 0;
}
RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
retval->Rotate3dSelf(rotX, rotY, rotZ);
return retval.forget();
}
WebKitCSSMatrix*
WebKitCSSMatrix::Rotate3dSelf(double aRotX,
double aRotY,
double aRotZ)
{
if (aRotX != 0 || aRotY != 0) {
Ensure3DMatrix();
}
if (mMatrix3D) {
if (fmod(aRotZ, 360) != 0) {
mMatrix3D->RotateZ(aRotZ * sRadPerDegree);
}
if (fmod(aRotY, 360) != 0) {
mMatrix3D->RotateY(aRotY * sRadPerDegree);
}
if (fmod(aRotX, 360) != 0) {
mMatrix3D->RotateX(aRotX * sRadPerDegree);
}
} else if (fmod(aRotZ, 360) != 0) {
mMatrix2D->PreRotate(aRotZ * sRadPerDegree);
}
return this;
}
already_AddRefed<WebKitCSSMatrix>
WebKitCSSMatrix::RotateAxisAngle(double aX,
double aY,
double aZ,
double aAngle) const
{
RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
retval->RotateAxisAngleSelf(aX, aY, aZ, aAngle);
return retval.forget();
}
already_AddRefed<WebKitCSSMatrix>
WebKitCSSMatrix::SkewX(double aSx) const
{
RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
retval->SkewXSelf(aSx);
return retval.forget();
}
already_AddRefed<WebKitCSSMatrix>
WebKitCSSMatrix::SkewY(double aSy) const
{
RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
retval->SkewYSelf(aSy);
return retval.forget();
}
} // namespace dom
} // namespace mozilla
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