tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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SVGMatrix.cpp (5275B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "mozilla/dom/SVGMatrix.h"
      8 
      9 #include <math.h>
     10 
     11 #include "mozilla/dom/DOMMatrix.h"
     12 #include "mozilla/dom/SVGMatrixBinding.h"
     13 #include "nsError.h"
     14 
     15 const double radPerDegree = 2.0 * M_PI / 360.0;
     16 
     17 namespace mozilla::dom {
     18 
     19 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(SVGMatrix, mTransform)
     20 
     21 DOMSVGTransform* SVGMatrix::GetParentObject() const { return mTransform; }
     22 
     23 JSObject* SVGMatrix::WrapObject(JSContext* aCx,
     24                                JS::Handle<JSObject*> aGivenProto) {
     25  return SVGMatrix_Binding::Wrap(aCx, this, aGivenProto);
     26 }
     27 
     28 void SVGMatrix::SetA(float aA, ErrorResult& aRv) {
     29  if (IsAnimVal()) {
     30    aRv.ThrowNoModificationAllowedError("Animated values cannot be set");
     31    return;
     32  }
     33 
     34  gfxMatrix mx = GetMatrix();
     35  mx._11 = aA;
     36  SetMatrix(mx);
     37 }
     38 
     39 void SVGMatrix::SetB(float aB, ErrorResult& aRv) {
     40  if (IsAnimVal()) {
     41    aRv.ThrowNoModificationAllowedError("Animated values cannot be set");
     42    return;
     43  }
     44 
     45  gfxMatrix mx = GetMatrix();
     46  mx._12 = aB;
     47  SetMatrix(mx);
     48 }
     49 
     50 void SVGMatrix::SetC(float aC, ErrorResult& aRv) {
     51  if (IsAnimVal()) {
     52    aRv.ThrowNoModificationAllowedError("Animated values cannot be set");
     53    return;
     54  }
     55 
     56  gfxMatrix mx = GetMatrix();
     57  mx._21 = aC;
     58  SetMatrix(mx);
     59 }
     60 
     61 void SVGMatrix::SetD(float aD, ErrorResult& aRv) {
     62  if (IsAnimVal()) {
     63    aRv.ThrowNoModificationAllowedError("Animated values cannot be set");
     64    return;
     65  }
     66 
     67  gfxMatrix mx = GetMatrix();
     68  mx._22 = aD;
     69  SetMatrix(mx);
     70 }
     71 
     72 void SVGMatrix::SetE(float aE, ErrorResult& aRv) {
     73  if (IsAnimVal()) {
     74    aRv.ThrowNoModificationAllowedError("Animated values cannot be set");
     75    return;
     76  }
     77 
     78  gfxMatrix mx = GetMatrix();
     79  mx._31 = aE;
     80  SetMatrix(mx);
     81 }
     82 
     83 void SVGMatrix::SetF(float aF, ErrorResult& aRv) {
     84  if (IsAnimVal()) {
     85    aRv.ThrowNoModificationAllowedError("Animated values cannot be set");
     86    return;
     87  }
     88 
     89  gfxMatrix mx = GetMatrix();
     90  mx._32 = aF;
     91  SetMatrix(mx);
     92 }
     93 
     94 already_AddRefed<SVGMatrix> SVGMatrix::Multiply(const DOMMatrix2DInit& aMatrix,
     95                                                ErrorResult& aRv) {
     96  auto matrix2D = DOMMatrixReadOnly::ToValidatedMatrixDouble(aMatrix, aRv);
     97  if (aRv.Failed()) {
     98    return nullptr;
     99  }
    100  if (!matrix2D.IsFinite()) {
    101    aRv.ThrowTypeError<MSG_NOT_FINITE>("SVGMatrix::Multiply matrix");
    102    return nullptr;
    103  }
    104  return do_AddRef(new SVGMatrix(matrix2D * GetMatrix()));
    105 }
    106 
    107 already_AddRefed<SVGMatrix> SVGMatrix::Inverse(ErrorResult& aRv) {
    108  gfxMatrix mat = GetMatrix();
    109  if (!mat.Invert()) {
    110    aRv.ThrowInvalidStateError("Matrix is not invertible");
    111    return nullptr;
    112  }
    113  return do_AddRef(new SVGMatrix(mat));
    114 }
    115 
    116 already_AddRefed<SVGMatrix> SVGMatrix::Translate(float x, float y) {
    117  return do_AddRef(
    118      new SVGMatrix(gfxMatrix(GetMatrix()).PreTranslate(gfxPoint(x, y))));
    119 }
    120 
    121 already_AddRefed<SVGMatrix> SVGMatrix::Scale(float scaleFactor) {
    122  return ScaleNonUniform(scaleFactor, scaleFactor);
    123 }
    124 
    125 already_AddRefed<SVGMatrix> SVGMatrix::ScaleNonUniform(float scaleFactorX,
    126                                                       float scaleFactorY) {
    127  return do_AddRef(new SVGMatrix(
    128      gfxMatrix(GetMatrix()).PreScale(scaleFactorX, scaleFactorY)));
    129 }
    130 
    131 already_AddRefed<SVGMatrix> SVGMatrix::Rotate(float angle) {
    132  return do_AddRef(
    133      new SVGMatrix(gfxMatrix(GetMatrix()).PreRotate(angle * radPerDegree)));
    134 }
    135 
    136 already_AddRefed<SVGMatrix> SVGMatrix::RotateFromVector(float x, float y,
    137                                                        ErrorResult& aRv) {
    138  if (x == 0.0 || y == 0.0) {
    139    aRv.ThrowInvalidAccessError("Neither input parameter may be zero");
    140    return nullptr;
    141  }
    142 
    143  return do_AddRef(
    144      new SVGMatrix(gfxMatrix(GetMatrix()).PreRotate(atan2(y, x))));
    145 }
    146 
    147 already_AddRefed<SVGMatrix> SVGMatrix::FlipX() {
    148  const gfxMatrix& mx = GetMatrix();
    149  return do_AddRef(new SVGMatrix(
    150      gfxMatrix(-mx._11, -mx._12, mx._21, mx._22, mx._31, mx._32)));
    151 }
    152 
    153 already_AddRefed<SVGMatrix> SVGMatrix::FlipY() {
    154  const gfxMatrix& mx = GetMatrix();
    155  return do_AddRef(new SVGMatrix(
    156      gfxMatrix(mx._11, mx._12, -mx._21, -mx._22, mx._31, mx._32)));
    157 }
    158 
    159 already_AddRefed<SVGMatrix> SVGMatrix::SkewX(float angle, ErrorResult& aRv) {
    160  double ta = tan(angle * radPerDegree);
    161  if (!std::isfinite(ta)) {
    162    aRv.ThrowInvalidAccessError("Invalid angle");
    163    return nullptr;
    164  }
    165 
    166  const gfxMatrix& mx = GetMatrix();
    167  gfxMatrix skewMx(mx._11, mx._12, mx._21 + mx._11 * ta, mx._22 + mx._12 * ta,
    168                   mx._31, mx._32);
    169  return do_AddRef(new SVGMatrix(skewMx));
    170 }
    171 
    172 already_AddRefed<SVGMatrix> SVGMatrix::SkewY(float angle, ErrorResult& aRv) {
    173  double ta = tan(angle * radPerDegree);
    174  if (!std::isfinite(ta)) {
    175    aRv.ThrowInvalidAccessError("Invalid angle");
    176    return nullptr;
    177  }
    178 
    179  const gfxMatrix& mx = GetMatrix();
    180  gfxMatrix skewMx(mx._11 + mx._21 * ta, mx._12 + mx._22 * ta, mx._21, mx._22,
    181                   mx._31, mx._32);
    182 
    183  return do_AddRef(new SVGMatrix(skewMx));
    184 }
    185 
    186 }  // namespace mozilla::dom