mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-07 05:15:09 +00:00
19d640cfe8
--HG-- extra : rebase_source : a56c9452723e015e6910c82dbb4c121413ec0e0d
264 lines
7.1 KiB
C++
264 lines
7.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/WebKitCSSMatrix.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "mozilla/dom/WebKitCSSMatrixBinding.h"
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#include "mozilla/Preferences.h"
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#include "nsCSSParser.h"
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#include "nsPresContext.h"
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#include "nsStyleTransformMatrix.h"
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#include "RuleNodeCacheConditions.h"
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namespace mozilla {
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namespace dom {
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static const double sRadPerDegree = 2.0 * M_PI / 360.0;
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bool
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WebKitCSSMatrix::FeatureEnabled(JSContext* aCx, JSObject* aObj)
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{
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return Preferences::GetBool("layout.css.DOMMatrix.enabled", false) &&
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Preferences::GetBool("layout.css.prefixes.webkit", false);
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}
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already_AddRefed<WebKitCSSMatrix>
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WebKitCSSMatrix::Constructor(const GlobalObject& aGlobal, ErrorResult& aRv)
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{
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RefPtr<WebKitCSSMatrix> obj = new WebKitCSSMatrix(aGlobal.GetAsSupports());
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return obj.forget();
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}
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already_AddRefed<WebKitCSSMatrix>
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WebKitCSSMatrix::Constructor(const GlobalObject& aGlobal,
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const nsAString& aTransformList, ErrorResult& aRv)
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{
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RefPtr<WebKitCSSMatrix> obj = new WebKitCSSMatrix(aGlobal.GetAsSupports());
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obj = obj->SetMatrixValue(aTransformList, aRv);
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return obj.forget();
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}
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already_AddRefed<WebKitCSSMatrix>
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WebKitCSSMatrix::Constructor(const GlobalObject& aGlobal,
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const DOMMatrixReadOnly& aOther, ErrorResult& aRv)
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{
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RefPtr<WebKitCSSMatrix> obj = new WebKitCSSMatrix(aGlobal.GetAsSupports(),
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aOther);
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return obj.forget();
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}
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JSObject*
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WebKitCSSMatrix::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return WebKitCSSMatrixBinding::Wrap(aCx, this, aGivenProto);
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}
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WebKitCSSMatrix*
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WebKitCSSMatrix::SetMatrixValue(const nsAString& aTransformList,
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ErrorResult& aRv)
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{
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// An empty string is a no-op.
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if (aTransformList.IsEmpty()) {
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return this;
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}
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nsCSSValue value;
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nsCSSParser parser;
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bool parseSuccess = parser.ParseTransformProperty(aTransformList,
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true,
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value);
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if (!parseSuccess) {
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aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
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return nullptr;
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}
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// A value of "none" results in a 2D identity matrix.
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if (value.GetUnit() == eCSSUnit_None) {
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mMatrix3D = nullptr;
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mMatrix2D = new gfx::Matrix();
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return this;
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}
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// A value other than a transform-list is a syntax error.
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if (value.GetUnit() != eCSSUnit_SharedList) {
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aRv.Throw(NS_ERROR_DOM_SYNTAX_ERR);
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return nullptr;
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}
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RuleNodeCacheConditions dummy;
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nsStyleTransformMatrix::TransformReferenceBox dummyBox;
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bool contains3dTransform = false;
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gfx::Matrix4x4 transform = nsStyleTransformMatrix::ReadTransforms(
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value.GetSharedListValue()->mHead,
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nullptr, nullptr, dummy, dummyBox,
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nsPresContext::AppUnitsPerCSSPixel(),
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&contains3dTransform);
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if (!contains3dTransform) {
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mMatrix3D = nullptr;
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mMatrix2D = new gfx::Matrix();
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SetA(transform._11);
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SetB(transform._12);
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SetC(transform._21);
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SetD(transform._22);
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SetE(transform._41);
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SetF(transform._42);
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} else {
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mMatrix3D = new gfx::Matrix4x4(transform);
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mMatrix2D = nullptr;
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}
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return this;
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}
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already_AddRefed<WebKitCSSMatrix>
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WebKitCSSMatrix::Multiply(const WebKitCSSMatrix& other) const
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{
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RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
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retval->MultiplySelf(other);
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return retval.forget();
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}
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already_AddRefed<WebKitCSSMatrix>
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WebKitCSSMatrix::Inverse(ErrorResult& aRv) const
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{
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RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
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retval->InvertSelfThrow(aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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return retval.forget();
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}
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WebKitCSSMatrix*
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WebKitCSSMatrix::InvertSelfThrow(ErrorResult& aRv)
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{
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if (mMatrix3D) {
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if (!mMatrix3D->Invert()) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return nullptr;
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}
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} else if (!mMatrix2D->Invert()) {
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aRv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
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return nullptr;
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}
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return this;
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}
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already_AddRefed<WebKitCSSMatrix>
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WebKitCSSMatrix::Translate(double aTx,
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double aTy,
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double aTz) const
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{
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RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
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retval->TranslateSelf(aTx, aTy, aTz);
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return retval.forget();
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}
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already_AddRefed<WebKitCSSMatrix>
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WebKitCSSMatrix::Scale(double aScaleX,
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const Optional<double>& aScaleY,
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double aScaleZ) const
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{
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double scaleX = aScaleX;
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double scaleY = aScaleY.WasPassed() ? aScaleY.Value() : scaleX;
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double scaleZ = aScaleZ;
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RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
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retval->ScaleNonUniformSelf(scaleX, scaleY, scaleZ);
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return retval.forget();
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}
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already_AddRefed<WebKitCSSMatrix>
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WebKitCSSMatrix::Rotate(double aRotX,
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const Optional<double>& aRotY,
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const Optional<double>& aRotZ) const
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{
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double rotX = aRotX;
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double rotY;
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double rotZ;
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if (!aRotY.WasPassed() && !aRotZ.WasPassed()) {
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rotZ = rotX;
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rotX = 0;
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rotY = 0;
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} else {
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rotY = aRotY.WasPassed() ? aRotY.Value() : 0;
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rotZ = aRotZ.WasPassed() ? aRotZ.Value() : 0;
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}
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RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
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retval->Rotate3dSelf(rotX, rotY, rotZ);
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return retval.forget();
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}
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WebKitCSSMatrix*
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WebKitCSSMatrix::Rotate3dSelf(double aRotX,
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double aRotY,
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double aRotZ)
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{
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if (aRotX != 0 || aRotY != 0) {
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Ensure3DMatrix();
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}
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if (mMatrix3D) {
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if (fmod(aRotZ, 360) != 0) {
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mMatrix3D->RotateZ(aRotZ * sRadPerDegree);
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}
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if (fmod(aRotY, 360) != 0) {
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mMatrix3D->RotateY(aRotY * sRadPerDegree);
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}
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if (fmod(aRotX, 360) != 0) {
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mMatrix3D->RotateX(aRotX * sRadPerDegree);
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}
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} else if (fmod(aRotZ, 360) != 0) {
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mMatrix2D->PreRotate(aRotZ * sRadPerDegree);
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}
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return this;
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}
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already_AddRefed<WebKitCSSMatrix>
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WebKitCSSMatrix::RotateAxisAngle(double aX,
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double aY,
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double aZ,
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double aAngle) const
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{
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RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
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retval->RotateAxisAngleSelf(aX, aY, aZ, aAngle);
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return retval.forget();
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}
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already_AddRefed<WebKitCSSMatrix>
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WebKitCSSMatrix::SkewX(double aSx) const
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{
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RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
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retval->SkewXSelf(aSx);
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return retval.forget();
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}
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already_AddRefed<WebKitCSSMatrix>
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WebKitCSSMatrix::SkewY(double aSy) const
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{
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RefPtr<WebKitCSSMatrix> retval = new WebKitCSSMatrix(mParent, *this);
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retval->SkewYSelf(aSy);
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return retval.forget();
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}
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} // namespace dom
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} // namespace mozilla
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