- From: tomerm via GitHub <sysbot+gh@w3.org>
- Date: Sun, 10 Apr 2016 18:28:04 +0000
- To: public-i18n-archive@w3.org
Some more info on bidi layout attributes mentioned above: **Base direction** Identifies where in the presentation area bidirectional text starts: right-to-left, left-to-right, or contextual (based on the directionality of the first character that has a defined direction). **Ordering scheme** Identifies what kind of algorithm is used when transforming the text layout. There are several types of algorithms: _Visual algorithms,_ which copy entire lines of text as they are presented without regard for existing embedded directional segments _Implicit algorithms_ _Logical algorithms,_ which recognize directional segments based on the natural directionality of the characters (right to left for Arabic characters and left to right for English characters), and perform segment inversions accordingly. _Explicit algorithms,_ which recognize directional segments and perform inversions based on special, explicit, directional controls embedded in the text **Text shaping** Indicates whether or not text shaping determination is required when text is rendered. This is relevant for Arabic scripts, since characters assume different shapes (initial, medial, final, or isolated) according to their position in a word and the connectivity traits of the surrounding characters. **Symmetric swapping** In bidi text, this Indicates whether or not specific directional pairs of characters, such as left and right parentheses, and greater-than and less-than signs, will have to be interchanged in order to preserve the logical meaning of the presented text **Numeral shapes** Indicates whether or not numbers embedded in an Arabic script will have to be presented using the Hindi (or European) digit shapes or the Hindi (or Arabic-Indic) digit shapes. -- GitHub Notification of comment by tomerm Please view or discuss this issue at https://github.com/w3c/charmod-norm/issues/80#issuecomment-208039766 using your GitHub account
Received on Sunday, 10 April 2016 18:28:05 UTC