dom/svg/SVGGeometryProperty.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 "SVGGeometryProperty.h"
   8 #include "SVGCircleElement.h"
   9 #include "SVGEllipseElement.h"
  10 #include "SVGForeignObjectElement.h"
  11 #include "SVGImageElement.h"
  12 #include "SVGRectElement.h"
  13 #include "SVGUseElement.h"
  14 #include "nsCSSValue.h"
  15
  16 namespace mozilla::dom::SVGGeometryProperty {
  17
  18 nsCSSUnit SpecifiedUnitTypeToCSSUnit(uint8_t aSpecifiedUnit) {
  19   switch (aSpecifiedUnit) {
  20     case SVGLength_Binding::SVG_LENGTHTYPE_NUMBER:
  21     case SVGLength_Binding::SVG_LENGTHTYPE_PX:
  22       return nsCSSUnit::eCSSUnit_Pixel;
  23
  24     case SVGLength_Binding::SVG_LENGTHTYPE_MM:
  25       return nsCSSUnit::eCSSUnit_Millimeter;
  26
  27     case SVGLength_Binding::SVG_LENGTHTYPE_CM:
  28       return nsCSSUnit::eCSSUnit_Centimeter;
  29
  30     case SVGLength_Binding::SVG_LENGTHTYPE_IN:
  31       return nsCSSUnit::eCSSUnit_Inch;
  32
  33     case SVGLength_Binding::SVG_LENGTHTYPE_PT:
  34       return nsCSSUnit::eCSSUnit_Point;
  35
  36     case SVGLength_Binding::SVG_LENGTHTYPE_PC:
  37       return nsCSSUnit::eCSSUnit_Pica;
  38
  39     case SVGLength_Binding::SVG_LENGTHTYPE_PERCENTAGE:
  40       return nsCSSUnit::eCSSUnit_Percent;
  41
  42     case SVGLength_Binding::SVG_LENGTHTYPE_EMS:
  43       return nsCSSUnit::eCSSUnit_EM;
  44
  45     case SVGLength_Binding::SVG_LENGTHTYPE_EXS:
  46       return nsCSSUnit::eCSSUnit_XHeight;
  47
  48     default:
  49       MOZ_ASSERT_UNREACHABLE("Unknown unit type");
  50       return nsCSSUnit::eCSSUnit_Pixel;
  51   }
  52 }
  53
  54 nsCSSPropertyID AttrEnumToCSSPropId(const SVGElement* aElement,
  55                                     uint8_t aAttrEnum) {
  56   // This is a very trivial function only applied to a few elements,
  57   // so we want to avoid making it virtual.
  58   if (aElement->IsSVGElement(nsGkAtoms::rect)) {
  59     return SVGRectElement::GetCSSPropertyIdForAttrEnum(aAttrEnum);
  60   }
  61   if (aElement->IsSVGElement(nsGkAtoms::circle)) {
  62     return SVGCircleElement::GetCSSPropertyIdForAttrEnum(aAttrEnum);
  63   }
  64   if (aElement->IsSVGElement(nsGkAtoms::ellipse)) {
  65     return SVGEllipseElement::GetCSSPropertyIdForAttrEnum(aAttrEnum);
  66   }
  67   if (aElement->IsSVGElement(nsGkAtoms::image)) {
  68     return SVGImageElement::GetCSSPropertyIdForAttrEnum(aAttrEnum);
  69   }
  70   if (aElement->IsSVGElement(nsGkAtoms::foreignObject)) {
  71     return SVGForeignObjectElement::GetCSSPropertyIdForAttrEnum(aAttrEnum);
  72   }
  73   if (aElement->IsSVGElement(nsGkAtoms::use)) {
  74     return SVGUseElement::GetCSSPropertyIdForAttrEnum(aAttrEnum);
  75   }
  76   return eCSSProperty_UNKNOWN;
  77 }
  78
  79 bool IsNonNegativeGeometryProperty(nsCSSPropertyID aProp) {
  80   return aProp == eCSSProperty_r || aProp == eCSSProperty_rx ||
  81          aProp == eCSSProperty_ry || aProp == eCSSProperty_width ||
  82          aProp == eCSSProperty_height;
  83 }
  84
  85 bool ElementMapsLengthsToStyle(SVGElement const* aElement) {
  86   return aElement->IsAnyOfSVGElements(nsGkAtoms::rect, nsGkAtoms::circle,
  87                                       nsGkAtoms::ellipse, nsGkAtoms::image,
  88                                       nsGkAtoms::foreignObject, nsGkAtoms::use);
  89 }
  90
  91 }  // namespace mozilla::dom::SVGGeometryProperty