dom/svg/SVGForeignObjectElement.cpp

   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/SVGForeignObjectElement.h"
   8
   9 #include "mozilla/AlreadyAddRefed.h"
  10 #include "mozilla/ArrayUtils.h"
  11 #include "mozilla/dom/SVGDocument.h"
  12 #include "mozilla/dom/SVGForeignObjectElementBinding.h"
  13 #include "mozilla/dom/SVGLengthBinding.h"
  14 #include "SVGGeometryProperty.h"
  15
  16 NS_IMPL_NS_NEW_SVG_ELEMENT(ForeignObject)
  17
  18 namespace mozilla::dom {
  19
  20 JSObject* SVGForeignObjectElement::WrapNode(JSContext* aCx,
  21                                             JS::Handle<JSObject*> aGivenProto) {
  22   return SVGForeignObjectElement_Binding::Wrap(aCx, this, aGivenProto);
  23 }
  24
  25 SVGElement::LengthInfo SVGForeignObjectElement::sLengthInfo[4] = {
  26     {nsGkAtoms::x, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
  27      SVGContentUtils::X},
  28     {nsGkAtoms::y, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
  29      SVGContentUtils::Y},
  30     {nsGkAtoms::width, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
  31      SVGContentUtils::X},
  32     {nsGkAtoms::height, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
  33      SVGContentUtils::Y},
  34 };
  35
  36 //----------------------------------------------------------------------
  37 // Implementation
  38
  39 SVGForeignObjectElement::SVGForeignObjectElement(
  40     already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
  41     : SVGGraphicsElement(std::move(aNodeInfo)) {}
  42
  43 namespace SVGT = SVGGeometryProperty::Tags;
  44
  45 //----------------------------------------------------------------------
  46 // nsINode methods
  47
  48 NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGForeignObjectElement)
  49
  50 //----------------------------------------------------------------------
  51
  52 already_AddRefed<DOMSVGAnimatedLength> SVGForeignObjectElement::X() {
  53   return mLengthAttributes[ATTR_X].ToDOMAnimatedLength(this);
  54 }
  55
  56 already_AddRefed<DOMSVGAnimatedLength> SVGForeignObjectElement::Y() {
  57   return mLengthAttributes[ATTR_Y].ToDOMAnimatedLength(this);
  58 }
  59
  60 already_AddRefed<DOMSVGAnimatedLength> SVGForeignObjectElement::Width() {
  61   return mLengthAttributes[ATTR_WIDTH].ToDOMAnimatedLength(this);
  62 }
  63
  64 already_AddRefed<DOMSVGAnimatedLength> SVGForeignObjectElement::Height() {
  65   return mLengthAttributes[ATTR_HEIGHT].ToDOMAnimatedLength(this);
  66 }
  67
  68 //----------------------------------------------------------------------
  69 // SVGElement methods
  70
  71 /* virtual */
  72 gfxMatrix SVGForeignObjectElement::PrependLocalTransformsTo(
  73     const gfxMatrix& aMatrix, SVGTransformTypes aWhich) const {
  74   // 'transform' attribute:
  75   gfxMatrix fromUserSpace =
  76       SVGGraphicsElement::PrependLocalTransformsTo(aMatrix, aWhich);
  77   if (aWhich == eUserSpaceToParent) {
  78     return fromUserSpace;
  79   }
  80   // our 'x' and 'y' attributes:
  81   float x, y;
  82
  83   if (!SVGGeometryProperty::ResolveAll<SVGT::X, SVGT::Y>(this, &x, &y)) {
  84     // This function might be called for element in display:none subtree
  85     // (e.g. getScreenCTM), we fall back to use SVG attributes.
  86     const_cast<SVGForeignObjectElement*>(this)->GetAnimatedLengthValues(
  87         &x, &y, nullptr);
  88   }
  89
  90   gfxMatrix toUserSpace = gfxMatrix::Translation(x, y);
  91   if (aWhich == eChildToUserSpace) {
  92     return toUserSpace * aMatrix;
  93   }
  94   MOZ_ASSERT(aWhich == eAllTransforms, "Unknown TransformTypes");
  95   return toUserSpace * fromUserSpace;
  96 }
  97
  98 /* virtual */
  99 bool SVGForeignObjectElement::HasValidDimensions() const {
 100   float width, height;
 101
 102   DebugOnly<bool> ok =
 103       SVGGeometryProperty::ResolveAll<SVGT::Width, SVGT::Height>(this, &width,
 104                                                                  &height);
 105   MOZ_ASSERT(ok, "SVGGeometryProperty::ResolveAll failed");
 106   return width > 0 && height > 0;
 107 }
 108
 109 //----------------------------------------------------------------------
 110 // nsIContent methods
 111
 112 NS_IMETHODIMP_(bool)
 113 SVGForeignObjectElement::IsAttributeMapped(const nsAtom* name) const {
 114   return IsInLengthInfo(name, sLengthInfo) ||
 115          SVGGraphicsElement::IsAttributeMapped(name);
 116 }
 117
 118 //----------------------------------------------------------------------
 119 // SVGElement methods
 120
 121 SVGElement::LengthAttributesInfo SVGForeignObjectElement::GetLengthInfo() {
 122   return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
 123                               ArrayLength(sLengthInfo));
 124 }
 125
 126 nsCSSPropertyID SVGForeignObjectElement::GetCSSPropertyIdForAttrEnum(
 127     uint8_t aAttrEnum) {
 128   switch (aAttrEnum) {
 129     case ATTR_X:
 130       return eCSSProperty_x;
 131     case ATTR_Y:
 132       return eCSSProperty_y;
 133     case ATTR_WIDTH:
 134       return eCSSProperty_width;
 135     case ATTR_HEIGHT:
 136       return eCSSProperty_height;
 137     default:
 138       MOZ_ASSERT_UNREACHABLE("Unknown attr enum");
 139       return eCSSProperty_UNKNOWN;
 140   }
 141 }
 142
 143 }  // namespace mozilla::dom