- From: Ian Jacobs <ij@w3.org>
- Date: Tue, 25 Jul 2000 12:24:02 -0400
- To: w3c-wai-ua@w3.org
Jon, Can you confirm a resolution from the 20 July teleconference: > 1. expand font family size and color requirement to be > on an element basis not just a global setting Specifically, I interpret this resolution to mean that clarifications are required for four checkpoints 4.1, 4.2, 4.3, and 4.4 (refer to 7 July draft [2]). I'm not sure what these clarifications should be. I want to retract my proposal for a priority 1 requirement for element-level configuration of colors and fonts because this requires a selector mechanism (like CSS selectors) to identify elements). I don't want to require a selector mechanism because there's no standard way to do this outside of a particular specification (CSS, XPath). Configuration on a global level makes sense (more or less the 7 July 2000 draft of the checkpoints), but there needs to be clarification about how those global style preferences should (or must) cascade with other style preferences (e.g., author styles). For example, in Netscape Navigator, I can specify the default text background color, the default text foreground color, the default link style, and whether my preferences should override all others. We need to clarify that this type of override is required by the four checkpoints. Interactive control of fonts and colors seems like a reasonable request (though I don't know if anyone implements this, unless you consider changing the user style sheet to be control, and I don't). Note also the proposal related to issue 296 [3], which suggests adding control for 4.2-4.4. However, I'm not sure that this should be a P1 requirement. PROPOSAL: This discussion got started in the context of link (8.2, 8.3), selection, and focus highlighting (4.13 and 4.14). The proposal was to have the link, selection, and focus highlight checkpoints point to the font and color requirements of checkpoints 4.1-4.4 and to expand 4.1-4.4 to element-level control and configuration. Even though I proposed expanding the requirements of 4.1-4.4, I am scared off by the issues this would raise. Instead, I would like to return to my original proposal (one mechanism in addition to color) [4]. I could also live with one mechanism in addition to color and font control (as discussed on 20 July). Finally, I propose clarifying 4.1-4.4 as follows (originals are quoted below my signature): 4.1 Allow the user to configure and control the size of paragraph text. Make available the range of system font sizes. Note on 4.1: I have chosen "paragraph" text (which is very HTML-centric) consciously. Otherwise, what would be the set of elements for which configuration is required? 4.2 Allow the user to configure the font family for all text. Allow the user to specify whether this preference overrides author-specified font families. Allow the user to select from among the range of system font families. 4.3 Allow the user to configure the foreground color for all text. Allow the user to specify whether this preference overrides author-specified text foreground colors. Allow the user to select from among the range of system colors. 4.4 Allow the user to configure the default text background color. Allow the user to specify whether this preference overrides the author-specified text background colors. Allow the user to select from among the range of system colors. These four checkpoints should be analyzed (in terms of minimal requirements) along the following axes: 1) Are we talking about configuration or control of a global resource (such as "the default background color") or an element-level resource? If element-level config/control is required what is the range of elements? 2) Must the user's preference always override competing font and color settings? 3) What is the range of values for the colors and fonts? [We've already answered: use system values.] I am not proposing to add additional requirements for control of fonts and colors at the element level at this time. - Ian [1] http://lists.w3.org/Archives/Public/w3c-wai-ua/2000JulSep/0097.html [2] http://www.w3.org/WAI/UA/WD-UAAG10-20000707/ [3] http://cmos-eng.rehab.uiuc.edu/ua-issues/issues-linear.html#296 [4] http://lists.w3.org/Archives/Public/w3c-wai-ua/2000AprJun/0448.html The four checkpoints in question: 4.1 Allow the user to configure and control the size of text. If this is done by allowing the user to configure font size, make available the range of system font sizes 4.2 Allow the user to configure font family. Allowing the user to select from among the range of system font families. 4.3 Allow the user to configure foreground color. Make available the range of system colors. 4.4 Allow the user to configure background color. Make available the range of system colors. -- Ian Jacobs (jacobs@w3.org) http://www.w3.org/People/Jacobs Tel: +1 831 457-2842 Cell: +1 917 450-8783
Received on Tuesday, 25 July 2000 12:24:06 UTC