http:\/\/www.w3.org\/TR\/SVG\/propidx.html<\/a><\/p>\nCascading is tricky, and it’s potentially quite slow – you have to look-up the property in many different places, and check each one “in correct order” until you find the first match.<\/p>\n
So, we have a method in SVGElement that does all this for you:
\n[objc]
\n-(NSString*) cascadedValueForStylableProperty:(NSString*) stylableProperty
\n[\/objc]
\n…but that is not part of the SVG Spec, and it’s possible it *is* part of the CSS spec, but located in a different class (I haven’t found it yet). We’ll leave that method there as a convenience, but you might need to import a special header to access it (since it’s not part of the SVG Spec).<\/p>\n
To use cascading (which you MUST do), instead of this:
\n[objc]
\n\/\/ DON’T DO THIS (it ignores cascading and styles and CSS-classes)
\nAttr* fillAttribute = [self getAttribute:@"fill"];
\n[\/objc]
\n…do this:
\n[objc]
\n\/\/ Automatically does all the CSS stuff for you
\nNSString* fillAttributeValue = [self cascadedValueForStylableProperty:@"fill"];
\n[\/objc]
\n…eventually, we’ll add an error \/ NSAssert for cases where you pass in a property that is not one of the cascadeable ones – for now, just use the table as a reference.<\/p>\n
Class names and method names<\/h3>\n
We couldn’t use a classname prefix of “SVG” because the SVG spec reserves all classnames beginning “SVG”. Inside the project, you’ll find all of these in the “SVG DOM” folder – please note: these are MANDATED by the SVG Spec, we did NOT come up with the names.<\/p>\n
Apple had a similar problem when they invented GLKit – the prefix “GL” was already used in the OpenGL library they were extending, so they named their classes “GLK” prefix. Hence … “SVGK”)<\/p>\n
Whenever you create a new class that is not part of the SVG Spec – for any reason – you must prefix the name with “SVGK”.<\/p>\n
Some of our classes – for historic reasons – don’t follow this convention. Yet. Feel free to refactor any you encounter.<\/p>\n","protected":false},"excerpt":{"rendered":"
SVG is an awesome image format thats widely used, works in all browsers. SVG graphics make better apps and better games – and automatically “upgrade” themselves for future devices. This post explains the underlying code architecture of SVGKit – the open-source SVG implementation for iOS\/OS X; the target audience is developers who want to help […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"_links":{"self":[{"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/posts\/2127"}],"collection":[{"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/comments?post=2127"}],"version-history":[{"count":3,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/posts\/2127\/revisions"}],"predecessor-version":[{"id":3051,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/posts\/2127\/revisions\/3051"}],"wp:attachment":[{"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/media?parent=2127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/categories?post=2127"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/new.t-machine.org\/index.php\/wp-json\/wp\/v2\/tags?post=2127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}