Changes from SVG 1.1

This appendix is informative, not normative.

This appendix summarizes the changes that have been made since the SVG 1.1 Second Edition Recommendation. Changes made since the last SVG 2 Working Draft are highlighted.

Editorial changes

A number of stylistic changes have been made to the specification to make it more readable. These include the following:

• A change towards using styling similar to contemporary CSS specifications.
• Annotations have been added to the specification to reflect features that the Working Group has resolved on including and for which a member of the group has committed to drive that feature.
• Define comma-wsp and wsp in the types chapter and reference these from all other grammars that need it.

Substantial changes

In additional to the editorial changes listed above, the following substantial additions, changes and removals have been made.

Across the whole document

• References to the SVG DTD have been removed.
• IDL has been updated to use Web IDL syntax.
• Added "length" attribute and indexed property access to all list interfaces.
• Remove definition of <angle> type and reference CSS3-values.
• Change all coordinate types to <length> in preparation for referencing css3-values..
• Add the 'script' element to the content model of all elements.
• Changed the initialize, appendItem, replaceItem and insertItemBefore methods on list objects to make a copy of any list item being inserted that is already in another list.

Rendering Model chapter

• Update rendering model to refer to Compositing and Blending Specification.

Basic Data Types and Interfaces chapter

• All appearance of SVGMatrix were replaced by DOMMatrix or DOMMatrixReadOnly.
• All appearance of SVGRect were replaced by DOMRect or DOMRectReadOnly.
• All appearance of SVGPoint were replaced by DOMPoint or DOMPointReadOnly.
• Removed the SVGStylable and SVGLangSpace interfaces and moved all of their members on to SVGElement.
• Turned SVGLocatable and SVGTransformable into SVGGraphicsElement, which directly inherits from SVGElement.
• Added an SVGGraphicsElement interface.
• Added an SVGGeometryElement interface with isPointInFill and isPointInStroke methods.
• Removed the SVGExternalResourcesRequired interface.
• Added constructors to SVGNumber, SVGLength, SVGAngle and SVGRect.
• Added getStrokeBBox on SVGGraphicsElement to get the tight stroke bounding box.
• Added base value accessors on SVGAnimatedLength and SVGAnimatedLengthList for each of the CSS length units supported.
• Make viewportElement and ownerSVGElement on SVGElement nullable.
• Removed the getPresentationAttribute operation on SVGElement and the SVGColor and SVGICCColor interfaces.
• Added focus and blur operations and tabIndex attribute to SVGElement.
• Added activeElement attribute to Document.
• Made SVGElement implement the GlobalEventHandlers interface from HTML.
• Removed getStrokeBBox from SVGGraphicsElement and extended getBBox with a dictionary argument that controls which parts of the element are included in the returned bounding box.
• Allow leading and trailing whitespace in <length>, <angle>, <number> and <integer>.
• Make whitespace include form feed (U+000C) to align with CSS and HTML.

Document Structure chapter

• Deprecated the suspendRedraw, unsuspendRedraw and unsuspendRedrawAll methods in the SVGSVGElement interface.
• Removed the 'externalResourcesRequired' attribute.
• Added the 'discard' element and the 'timelineBegin' and 'playbackOrder' attributes on the 'svg' element, as defined in SVG Tiny 1.2.
• Added the ability to use 'auto' for the 'image/width' and 'image/height' attributes on 'image'.
• Lifted the restriction on 'use' not being able to reference an entire document.
• Added 'lang' attribute on 'desc' and 'title' elements.
• Added section on WAI-ARIA attributes.
• Clarified that CSS transforms on an outermost svg element do not affect currentScale or currentTranslate. Defined the returned values on 'svg' elements that are not outermost svg element.
• Deprecated the rootElement attribute.
• Defined event handler content attributes and IDL attributes on the root 'svg' element to be for events fired at the Window, like HTML's event handler content attributes and IDL attribute on body.
• Moved the 'image' element to the Embedded Content chapter.
• Removed the SVGElementInstance and SVGElementInstanceList interfaces, and the corresponding attributes on the SVGUseElement interface.
• Changed the 'use' element event flow to follow the Shadow DOM spec.
• Clarified that the 'switch' element does not affect processing of 'script' elements.
• Made the 'svg/width' and 'svg/height' attributes on the 'svg' element presentation attributes, and changed the lacuna value to auto.
• Removed the baseProfile and version attributes from the 'svg' element.

Styling chapter

• Removed the 'contentStyleType' attribute.
• SVGStyleElement now implements LinkStyle.

Coordinate Systems, Transformations and Units chapter

• Added constructors to SVGPoint, SVGMatrix and SVGTransform.
• Make SVGMatrix.skew{X,Y} throw an exception on bad values.
• Added improved wording on bounding box from SVG Tiny 1.2, and an algorithm which can compute a bounding box for an element.
• Define bounding box for element with no position to be at (0,0).

Paths chapter

• Added new B and b "bearing" path commands.
• Added new R and r Catmull-Rom curve commands.
• Define 'path', 'polygon' and 'polyline' elements with no data set (empty or zero valid commands) to not render.
• Define how getPathSegAtLength and getPointAtLength handle out-of-range input, and what to do in case there's no valid path data.

Text chapter

• Added a number of missing attributes to the element summary boxes of the 'text' and 'textPath' elements.
• Added 'text/width' attribute to 'text', and a section about 'text-overflow' processing.
• Added 'white-space' property and deprecated 'xml:space' attribute.
• Removed the 'kerning' property.
• Added 'textPath/d' attribute to 'textPath'.
• Removed the 'tref' element.
• Removed the 'altGlyph', 'altGlyphDef', 'altGlyphItem' and 'glyphRef' elements.

Embedded Content chapter

• Added this chapter, which includes new 'video', 'audio', 'iframe', 'canvas', 'source' and 'track' elements that behave almost identically to the equivalent HTML elements.

Painting chapter

• Added more detail to the descriptions of the stroke properties and added algorithms defining the exact shape a stroke must have.
• Added support for positioned markers, and added the 'marker-segment' and 'marker-pattern' properties.
• Added the 'paint-order' property.
• Moved the color-interpolation-filters property to the Filter Effects specification.
• Added the 'buffered-rendering' property.
• Added SVGMarkerList and SVGMarkerInstance interfaces to represent the markers painted on a given markable element, and an SVGMarkableElement interface to expose that list on markable elements.
• Added the context-fill and context-stroke paint values.
• Allowed <paint> values and marker properties to take the child keyword and <child-selector> values to support ID-less referencing.
• Added 'vector-effect' property to support non-scaling stroke.
• Add <gradient> as possible value for <paint>
• Added arcs value on 'stroke-linejoin'.
• Added the 'auto-start-reverse' attribute to the 'marker/orient' attribute on 'marker element'.
• Removed the SVGPaint interface.
• Extended the definitions of 'fill' and 'stroke' <paint> so that they can take multiple paints.
• Added the 'stroke-dashcorner' and 'stroke-dashadjust' properties.

Color chapter

• Added requirements for images to be color managed.
• Added new color syntaxes from the SVG Color specification: RGBA colors, HSL colors, LAB colors, ICC named colors and device colors.
• Removed the 'color-profile' property.
• Removed the 'color-profile' element.

Paint Servers chapter

• Added the 'solidColor' element and its two properties 'solid-color' and 'solid-opacity', ported over from SVG Tiny 1.2.
• Added an 'radialGradient/fr' attribute to the 'radialGradient' element, which allows specifying the radius of the focal circle.
• Added a section for mesh gradients, defining the 'meshGradient', 'meshRow' and 'meshPatch' elements.
• Added a section for hatches, defining the 'hatch' and 'hatchPath' elements.

Clipping, Masking and Compositing chapter

• SVG now references CSS Masking [CSS-MASKING] specification.
  • Removed definition of clipping/masking properties and elements.
  • Keep short introduction to clipping/masking and add reference to CSS Masking
• Added reference to Compositing and Blending spec. Simple alpha compositing it mandatory.
• The 'overflow' property should be respected on the outermost svg elements inline in html.

Filter Effects chapter

• Removed the body of this chapter and replaced it with a link to the Filter Effect specification.

Interactivity chapter

• Added the 'tabindex' attribute.
• Corrected the definition of the 'cursor/xlink:href' attribute on the 'cursor element' element to take an URL that is not in a CSS-like functional form.
• Added the bounding-box keyword to 'pointer-events'.
• Replaced SVGLoad, SVGAbort, SVGError and SVGUnload with load, abort, error and unload respectively.
• Required that only structurally external elements and the rootmost svg element must fire load events.
• Replaced SVGResize and SVGScroll with resize and scroll respectively.
• Removed DOMActivate.
• Replaced DOMFocusIn and DOMFocusOut with focusin and focusout, and added the blur event.
• Added keyboard events.
• Removed mutation events.

Linking chapter

• Added animation elements to the content model of 'view'.
• Added the possibility to link to SVG resources with fragment identifiers defined by the Media Fragments specification.

Scripting chapter

• Removed the 'contentScriptType' attribute.
• Removed 'onload' from AnimationEvents.

Animation chapter

• Folded the ElementTimeControl interface into SVGAnimationElement.
• Removed the animateColor element.
• Added the onbegin, onend and onrepeat attributes to the SVGAnimationElement interface.

Fonts chapter

• Added WOFF requirement, rearranged content.
• Removed this chapter and the SVG Fonts feature is contained, including the 'font', 'glyph', 'missing-glyph', 'hkern', 'vkern', 'font-face', 'font-face-src', 'font-face-uri', 'font-face-format' and 'font-face-name' elements and their corresponding IDL interfaces.

Extensibility chapter

• Made 'foreignObject' a graphics element.
• Made 'foreignObject/width' and 'foreignObject/height' presentation attributes on the 'foreignObject' element.

Document Type Definition appendix

• Removed this appendix, as SVG 2 is not defined in terms of a DTD.

SVG Document Object Model (DOM) appendix

• Added text to require IDL fragments be interpreted as Web IDL.
• Removed some unnecessary text.
• Removed mention of read only nodes in the DOM, since that concept no longer exists in DOM4.
• Removed the table defining how properties are exposed as specific types of CSSValue objects, since CSSValue has been removed.

Java Language Binding appendix

• Removed this appendix, as language bindings are now defined by Web IDL.

ECMAScript Language Binding appendix

• Removed this appendix, as language bindings are now defined by Web IDL.

References appendix

• Removed normative reference to CSS2.
• Removed informative reference to DOM Level 3 Core.
• Changed normative reference to DOM Level 1 Core to be informative.
• Changed normative reference from DOM Level 2 Core to DOM4.
• Changed informative reference to SMIL 3 to be normative.
• Added normative references to CSS3 Color, CSS3 Fonts, CSS3 Line Box, CSS3 Transforms, CSS3 UI, CSS3 Values and Units, CSS4 Images, Filter Effects, WOFF, Web IDL.
• Added informative references to CSS 3 Transitions and Animations.
• Updated reference from DOM Level 2 Events to DOM Level 3 Events and added a normative reference to UI Events.
• Added normative reference to WAI-ARIA 1.1.
• Added normative reference to Shadow DOM.

IDL Index appendix

• Added this appendix.