- From: Sigurd Lerstad <sigler@bredband.no>
- Date: Thu, 13 Mar 2003 14:33:39 +0100
- To: <www-svg@w3.org>
> On Wednesday, March 12, 2003, 1:48:13 AM, Sigurd wrote: > > > SL> Hello, > > SL> I'm implementing SVG and CSS.. And I'm about to implement > SL> presentational attributes and > SL> SVGStylable::getPresentationAttribute() > > SL> Are the presentational attributes separate from the CSS properties > SL> on that element? > > Depends what you mean. > > SL> I mean, if you have > > SL> <svg fill="#000000" style="fill:#ffffff"> > > SL> If you call element.getPresentationAttribute("fill") and you call > SL> element.style.getPropertyValue("fill") > SL> Do you get two separate objects in return? or do you get the same object? > > Separate, with different values. > > SL> I understand the spec as two different objects, just want to make sure... > > getPresentationAttribute > Returns the base (i.e., static) value of a given presentation > attribute as an object of type CSSValue > > That will return a CSSValue with white (there is no canonical form > yet, though clearly rgb (100%, 100%, 100%) can express any of the other > forms. I don't understand what you mean, fill was just an example. I'm thinking of implementing it like this: SVGStylable // implemented on an element { CSSStyleDeclaration m_style; // CSS style property declarations (done) CSSStyleDeclaration m_presentationAttributes; CSSValue getPresentationAttribute(name) { return m_presentationAttributes.getPropertyValue(name); } OnChangedAttribute(name, value) // Some attribute has been set/changed { if (IsPresentationAttribute(name)) { m_presentationAttributes.setPropertyValue(name, value); } } } Would this be correct? > getPropertyValue will, in the case of an implementation that > understands CSS, return a CSSValue most likely with the value black > unless there is a higher-specificity selector in a rule that sets it > to a different value. Which is possible, in CSS2, for example using > two id selectors, or an id and a class. > Are you now talking about the computed property value?, because if you call element.style.getPropertyValue() that should as far as I know return the property value in that style declaration (i.e. the style attribute), regardless of other rules, selectors or specificity. If not, I'm seriously mistaken. -- Sigurd Lerstad
Received on Wednesday, 12 March 2003 16:30:25 UTC