/* -*- 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/SVGMatrix.h" #include "nsError.h" #include <math.h> #include "mozilla/dom/SVGMatrixBinding.h" #include "mozilla/FloatingPoint.h" const double radPerDegree = 2.0 * M_PI / 360.0; namespace mozilla { namespace dom { NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(SVGMatrix, mTransform) NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(SVGMatrix, AddRef) NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(SVGMatrix, Release) SVGTransform* SVGMatrix::GetParentObject() const { return mTransform; } JSObject* SVGMatrix::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) { return SVGMatrixBinding::Wrap(aCx, this, aGivenProto); } void SVGMatrix::SetA(float aA, ErrorResult& rv) { if (IsAnimVal()) { rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR); return; } gfxMatrix mx = GetMatrix(); mx._11 = aA; SetMatrix(mx); } void SVGMatrix::SetB(float aB, ErrorResult& rv) { if (IsAnimVal()) { rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR); return; } gfxMatrix mx = GetMatrix(); mx._12 = aB; SetMatrix(mx); } void SVGMatrix::SetC(float aC, ErrorResult& rv) { if (IsAnimVal()) { rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR); return; } gfxMatrix mx = GetMatrix(); mx._21 = aC; SetMatrix(mx); } void SVGMatrix::SetD(float aD, ErrorResult& rv) { if (IsAnimVal()) { rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR); return; } gfxMatrix mx = GetMatrix(); mx._22 = aD; SetMatrix(mx); } void SVGMatrix::SetE(float aE, ErrorResult& rv) { if (IsAnimVal()) { rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR); return; } gfxMatrix mx = GetMatrix(); mx._31 = aE; SetMatrix(mx); } void SVGMatrix::SetF(float aF, ErrorResult& rv) { if (IsAnimVal()) { rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR); return; } gfxMatrix mx = GetMatrix(); mx._32 = aF; SetMatrix(mx); } already_AddRefed<SVGMatrix> SVGMatrix::Multiply(SVGMatrix& aMatrix) { RefPtr<SVGMatrix> matrix = new SVGMatrix(aMatrix.GetMatrix() * GetMatrix()); return matrix.forget(); } already_AddRefed<SVGMatrix> SVGMatrix::Inverse(ErrorResult& rv) { gfxMatrix mat = GetMatrix(); if (!mat.Invert()) { rv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR); return nullptr; } RefPtr<SVGMatrix> matrix = new SVGMatrix(mat); return matrix.forget(); } already_AddRefed<SVGMatrix> SVGMatrix::Translate(float x, float y) { RefPtr<SVGMatrix> matrix = new SVGMatrix(gfxMatrix(GetMatrix()).Translate(gfxPoint(x, y))); return matrix.forget(); } already_AddRefed<SVGMatrix> SVGMatrix::Scale(float scaleFactor) { return ScaleNonUniform(scaleFactor, scaleFactor); } already_AddRefed<SVGMatrix> SVGMatrix::ScaleNonUniform(float scaleFactorX, float scaleFactorY) { RefPtr<SVGMatrix> matrix = new SVGMatrix(gfxMatrix(GetMatrix()).Scale(scaleFactorX, scaleFactorY)); return matrix.forget(); } already_AddRefed<SVGMatrix> SVGMatrix::Rotate(float angle) { RefPtr<SVGMatrix> matrix = new SVGMatrix(gfxMatrix(GetMatrix()).Rotate(angle*radPerDegree)); return matrix.forget(); } already_AddRefed<SVGMatrix> SVGMatrix::RotateFromVector(float x, float y, ErrorResult& rv) { if (x == 0.0 || y == 0.0) { rv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR); return nullptr; } RefPtr<SVGMatrix> matrix = new SVGMatrix(gfxMatrix(GetMatrix()).Rotate(atan2(y, x))); return matrix.forget(); } already_AddRefed<SVGMatrix> SVGMatrix::FlipX() { const gfxMatrix& mx = GetMatrix(); RefPtr<SVGMatrix> matrix = new SVGMatrix(gfxMatrix(-mx._11, -mx._12, mx._21, mx._22, mx._31, mx._32)); return matrix.forget(); } already_AddRefed<SVGMatrix> SVGMatrix::FlipY() { const gfxMatrix& mx = GetMatrix(); RefPtr<SVGMatrix> matrix = new SVGMatrix(gfxMatrix(mx._11, mx._12, -mx._21, -mx._22, mx._31, mx._32)); return matrix.forget(); } already_AddRefed<SVGMatrix> SVGMatrix::SkewX(float angle, ErrorResult& rv) { double ta = tan( angle*radPerDegree ); if (!IsFinite(ta)) { rv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR); return nullptr; } const gfxMatrix& mx = GetMatrix(); gfxMatrix skewMx(mx._11, mx._12, (float) (mx._21 + mx._11*ta), (float) (mx._22 + mx._12*ta), mx._31, mx._32); RefPtr<SVGMatrix> matrix = new SVGMatrix(skewMx); return matrix.forget(); } already_AddRefed<SVGMatrix> SVGMatrix::SkewY(float angle, ErrorResult& rv) { double ta = tan( angle*radPerDegree ); if (!IsFinite(ta)) { rv.Throw(NS_ERROR_DOM_INVALID_ACCESS_ERR); return nullptr; } const gfxMatrix& mx = GetMatrix(); gfxMatrix skewMx((float) (mx._11 + mx._21*ta), (float) (mx._12 + mx._22*ta), mx._21, mx._22, mx._31, mx._32); RefPtr<SVGMatrix> matrix = new SVGMatrix(skewMx); return matrix.forget(); } } // namespace dom } // namespace mozilla