viernes, 15 de septiembre de 2017

Accesibildad de gráficos complejos

En Charts & Accessibility  se ofrecen algunos consejos, con ejemplos, para crear gráficos accesibles:

  1. If the data in a chart, graph or map is crucial to the content of a Web page, then you must provide a text description of the image. In some cases, a numeric table replicating the chart data could provide additional accessibility. WCAG 2.0 Guideline 1.1.1—"All non-text content that is presented to the user has a text alternative that serves the equivalent purpose…"
  2. Supplement color-coding of charts with texture, differences in line style, text in graphs or different shades of color to improve accessibility for colorblind users. Charts should be readable in black and white. NOTE: The default settings of the Chart Wizard in Excel are not color accessible. Use the formatting tools to change line styles and colors. WCAG 2.0 Guideline 1.4.1—"Color is not used as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element."

lunes, 11 de septiembre de 2017

WCAG 2.0 - Operable

viernes, 8 de septiembre de 2017

WCAG 2.0 - Perceivable

miércoles, 6 de septiembre de 2017

CSS Speech

Interesante el artículo Let’s Talk About Speech CSS:
The CSS 3 Speech Module, the evolved version of the aural Media Type, looks the most promising. Like display: none;, it is part of the small subset of CSS that has an impact on screen reader behavior. It uses traditional CSS property/value pairings alongside existing declarations to create an audio experience that has parity with the visual box model.
La realidad actual es que el soporte por parte de los productos de apoyo es muy reducido.

lunes, 4 de septiembre de 2017

Uso de un magnificador de pantalla (2)

viernes, 1 de septiembre de 2017

Uso de un magnificador de pantalla (1)