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 {
  19 namespace dom {
  20
  21 JSObject* SVGForeignObjectElement::WrapNode(JSContext* aCx,
  22                                             JS::Handle<JSObject*> aGivenProto) {
  23   return SVGForeignObjectElement_Binding::Wrap(aCx, this, aGivenProto);
  24 }
  25
  26 SVGElement::LengthInfo SVGForeignObjectElement::sLengthInfo[4] = {
  27     {nsGkAtoms::x, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
  28      SVGContentUtils::X},
  29     {nsGkAtoms::y, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
  30      SVGContentUtils::Y},
  31     {nsGkAtoms::width, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
  32      SVGContentUtils::X},
  33     {nsGkAtoms::height, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
  34      SVGContentUtils::Y},
  35 };
  36
  37 //----------------------------------------------------------------------
  38 // Implementation
  39
  40 SVGForeignObjectElement::SVGForeignObjectElement(
  41     already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
  42     : SVGGraphicsElement(std::move(aNodeInfo)) {}
  43
  44 namespace SVGT = SVGGeometryProperty::Tags;
  45
  46 //----------------------------------------------------------------------
  47 // nsINode methods
  48
  49 NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGForeignObjectElement)
  50
  51 //----------------------------------------------------------------------
  52
  53 already_AddRefed<DOMSVGAnimatedLength> SVGForeignObjectElement::X() {
  54   return mLengthAttributes[ATTR_X].ToDOMAnimatedLength(this);
  55 }
  56
  57 already_AddRefed<DOMSVGAnimatedLength> SVGForeignObjectElement::Y() {
  58   return mLengthAttributes[ATTR_Y].ToDOMAnimatedLength(this);
  59 }
  60
  61 already_AddRefed<DOMSVGAnimatedLength> SVGForeignObjectElement::Width() {
  62   return mLengthAttributes[ATTR_WIDTH].ToDOMAnimatedLength(this);
  63 }
  64
  65 already_AddRefed<DOMSVGAnimatedLength> SVGForeignObjectElement::Height() {
  66   return mLengthAttributes[ATTR_HEIGHT].ToDOMAnimatedLength(this);
  67 }
  68
  69 //----------------------------------------------------------------------
  70 // SVGElement methods
  71
  72 /* virtual */
  73 gfxMatrix SVGForeignObjectElement::PrependLocalTransformsTo(
  74     const gfxMatrix& aMatrix, SVGTransformTypes aWhich) const {
  75   // 'transform' attribute:
  76   gfxMatrix fromUserSpace =
  77       SVGGraphicsElement::PrependLocalTransformsTo(aMatrix, aWhich);
  78   if (aWhich == eUserSpaceToParent) {
  79     return fromUserSpace;
  80   }
  81   // our 'x' and 'y' attributes:
  82   float x, y;
  83
  84   if (!SVGGeometryProperty::ResolveAll<SVGT::X, SVGT::Y>(this, &x, &y)) {
  85     // This function might be called for element in display:none subtree
  86     // (e.g. getScreenCTM), we fall back to use SVG attributes.
  87     const_cast<SVGForeignObjectElement*>(this)->GetAnimatedLengthValues(
  88         &x, &y, nullptr);
  89   }
  90
  91   gfxMatrix toUserSpace = gfxMatrix::Translation(x, y);
  92   if (aWhich == eChildToUserSpace) {
  93     return toUserSpace * aMatrix;
  94   }
  95   MOZ_ASSERT(aWhich == eAllTransforms, "Unknown TransformTypes");
  96   return toUserSpace * fromUserSpace;
  97 }
  98
  99 /* virtual */
 100 bool SVGForeignObjectElement::HasValidDimensions() const {
 101   float width, height;
 102
 103   DebugOnly<bool> ok =
 104       SVGGeometryProperty::ResolveAll<SVGT::Width, SVGT::Height>(
 105           const_cast<SVGForeignObjectElement*>(this), &width, &height);
 106   MOZ_ASSERT(ok, "SVGGeometryProperty::ResolveAll failed");
 107   return width > 0 && height > 0;
 108 }
 109
 110 //----------------------------------------------------------------------
 111 // nsIContent methods
 112
 113 NS_IMETHODIMP_(bool)
 114 SVGForeignObjectElement::IsAttributeMapped(const nsAtom* name) const {
 115   static const MappedAttributeEntry* const map[] = {sFEFloodMap,
 116                                                     sFiltersMap,
 117                                                     sFontSpecificationMap,
 118                                                     sGradientStopMap,
 119                                                     sLightingEffectsMap,
 120                                                     sMarkersMap,
 121                                                     sTextContentElementsMap,
 122                                                     sViewportsMap};
 123
 124   return IsInLengthInfo(name, sLengthInfo) ||
 125          FindAttributeDependence(name, map) ||
 126          SVGGraphicsElement::IsAttributeMapped(name);
 127 }
 128
 129 //----------------------------------------------------------------------
 130 // SVGElement methods
 131
 132 SVGElement::LengthAttributesInfo SVGForeignObjectElement::GetLengthInfo() {
 133   return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
 134                               ArrayLength(sLengthInfo));
 135 }
 136
 137 nsCSSPropertyID SVGForeignObjectElement::GetCSSPropertyIdForAttrEnum(
 138     uint8_t aAttrEnum) {
 139   switch (aAttrEnum) {
 140     case ATTR_X:
 141       return eCSSProperty_x;
 142     case ATTR_Y:
 143       return eCSSProperty_y;
 144     case ATTR_WIDTH:
 145       return eCSSProperty_width;
 146     case ATTR_HEIGHT:
 147       return eCSSProperty_height;
 148     default:
 149       MOZ_ASSERT_UNREACHABLE("Unknown attr enum");
 150       return eCSSProperty_UNKNOWN;
 151   }
 152 }
 153
 154 }  // namespace dom
 155 }  // namespace mozilla