UAAG2.0-Chinese

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英文 中文 案例 评注
PRINCIPLE 1 - Ensure that the user interface and rendered content are perceivable 原则1 - 确认用户界面和呈现的内容是可以被接受的
Implementing Guideline 1.1 - Provide access to alternative content 实施指南 1.1 - 提供替代内容
1.1.1 Render Alternative Content: The user can choose to render any type of 0recognized alternative content that is present for a content element. (Level A) Note: It is recommended that the user agent allow the user to choose whether the alternative content replaces or supplements the original content element. 1.1.1 呈现替代内容：用户可以选择呈现任何类型的可识别的为内容元素展现的替代内容
1.1.2 Indicate Unrendered Alternative Content: The user can specify that indicators be displayed along with rendered content when recognized unrendered alternative content is present. (Level A) 1.1.2 指明不可呈现的替代内容：
1.1.3 Replace Non-Text Content: The user can request a placeholder that incorporates recognized text alternative content instead of recognized non-text content, until explicit user request to render the non-text content. (Level A) 1.1.3 替代非文本内容：
1.1.4 Provide Configurable Alternative Content Defaults: The user can specify which type(s) of alternative content to render by default for each type of non-text content, including time based media. (Level AA)
1.1.5 Facilitate Clear Display of Alternative Content for Time-based Media:For recognized on-screen alternative content for time-based media (e.g. captions, sign language video), the following are all true: (Level AA)
  • Don't obscure controls: Displaying time-based media alternatives doesn't obscure recognized controls for the primary time-based media.
  • Don't obscure primary media: The user can specify that displaying time-based media alternatives doesn't obscure the primary time-based media.
  • Use configurable text: The user can configure recognized text within time-based media alternatives (e.g. captions) in conformance with 1.4.1.

Note: Depending on the screen area available, the display of the primary time-based media may need to be reduced in size to meet this requirement.

1.1.6 Allow Resize and Reposition of Time-based Media Alternatives:

The user can configure recognized alternative content for time-based media (e.g. captions, sign language video) as follows: (Level AAA)

  • Resize: The user can resize alternative content for time-based media up to the size of the user agent's viewport.
  • Reposition: The user can reposition alternative content for time-based media to two or more of the following: above, below, to the right, to the left, and overlapping the primary time-based media.

Note 1: Depending on the screen area available, the display of the primary time-based media may need to be reduced in size or hidden to meet this requirement. Note 2: Implementation may involve displaying alternative content for time-based media in a separate viewport, but this is not required.

1.1.6 允许时基媒体的替代内容的调整大小和复位
Implementing Guideline 1.2 - Repair missing content 实施指南 1.2 - 修复缺失内容
1.2.1 Support Repair by Assistive Technologies: If text alternatives for non-text content are missing or empty then both of the following are true: (Level AA)
  • The user agent doesn't attempt to repair the text alternatives by substituting text values that are also available to assistive technologies.
  • The user agent makes available metadata related to the non-text content available programmatically, but not via fields reserved for text alternatives.
 1.2.1 支持辅助技术的修复
1.2.2 Repair Missing Structure: The user can specify whether or not the user agent should attempt to insert the following types of structural markup on the basis of author-specified presentation attributes (e.g. position and appearance): (Level AAA)
  • Labels
  • Headers (e.g. heading markup, table headers)
 1.2.2 修复缺失的结构
Implementing Guideline 1.3 - Provide highlighting for selection, keyboard focus, enabled elements, visited links 实施指南 1.3 - 选择和键盘聚焦时提供突出显示
1.3.1 Highlighted Items: The user can specify that the following classes be highlighted so that each is uniquely distinguished: (Level A)
  • Selection
  • Active keyboard focus (indicated by focus cursors and/or text cursors)
  • Recognized enabled input elements (distinguished from disabled elements)
  • Recently visited links
 1.3.1 突出显示项目
1.3.2 Highlighting Options: When highlighting classes specified by 1.3.1 Highlighted Items, the user can specify highlighting options that include at least: (Level AA)
  • Foreground colors
  • Background colors
  • Borders (color, style, and thickness)
  • Size when the indicator is an image
  • Blink rate (where implemented)
Implementing Guideline 1.4 - Provide text configuration 实施指南 1.4 - 提供文本配置
1.4.1 Text Scale, Color, Font (Globally): The user can globally set all of the following characteristics of visually rendered text content: (Level A)
  • Text scale with preserved size distinctions (e.g. keeping headings proportional to main font)
  • Text color and background color, choosing from all platform color options
  • Font family, choosing from all platform fonts
 1.4.1 文本比例、颜色、字体 （全局地）：用户可以全局地配置所有以下可视觉呈现的文本内容特征：(Level A)
  • 可以从所以平台中选择文本颜色、背景色
  • 可以从所有平台字体中选择字体族群
1.4.2 Text Size, Color and Font (by Element): The user can set all of the following characteristics of visually rendered text content for text element types including at least headings and input fields:(Level AA)
  • Text size
  • Text color and background color, choosing from all platform color options
  • Font family, choosing from all platform fonts
 1.4.2 文字大小、颜色和字体（元素）：用户可以以文本元素类型配置所有以下可视觉呈现的文本内容特征，至少应包括标题栏和输入栏
  • 字体大小
  • 可以从所以平台中选择文本颜色、背景色
  • 可以从所有平台字体中选择字体族群
1.4.3 Text Spacing and Style (Globally): The user can globally set all of the following characteristics of visually rendered blocks of text:(Level AA)
  • Line spacing of at least 1.0, 1.3, 1.5, and 2.0 times the font height
  • Character spacing of at least 0.01, 0.03, 0.06, 0.09 times the base character width
  • Word spacing of at least 0.01, 0.03, 0.06, 0.09 times the base character width
  • Text style (underline, italic, bold)
  • Justification (left, right, or full)

Note: For the purposes of UAAG 2.0, the base character width is the font width of the character commonly accepted as the base character for calculating kerning in the typography for that language (e.g. zero character in English).

1.4.3 文本间隔和样式 （全局）
1.4.4 Configured and Reflowed Text Printing: The user can print any rendered visual, non-time-based content to the user's choice of available printing devices. (Level AA)

Note: The user must be able to print content as it is rendered on screen, reflecting user scaling, highlighting, and other modifications, but reflowable content is reflowed for the print margins.

1.4.5 Text Style, Margins, Borders (by Element): The user can set all of the following characteristics of visually rendered text content for main text and for text element types including at least headings and input fields: (Level AAA)
  • Text style (underline, italic, bold)
  • Margins (for example, space above headings, indentation of lists)
  • Borders
1.4.6 Spacing, Capitalization and Hyphenation (Globally): The user can globally set all of the following characteristics of visually rendered blocks of text: (Level AAA)
  • Line spacing between 0.7 and 3.0 times the font height, at increments of 0.10
  • Capitalization (overriding upper case and small caps style)
  • Word-breaking properties (auto-hyphenation)
  • Margins
  • Borders

Note: This success criteria does not apply to text entered as all caps. Content authors are encouraged to use styles instead of typing text as all caps.

Implementing Guideline 1.5 - Provide volume configuration
1.5.1 Global Volume: The user can adjust the volume of each audio tracks independently of other tracks, relative to the global volume level set through operating environment mechanisms. (Level A)
Implementing Guideline 1.6 - Provide synthesized speech configuration
1.6.1 Speech Rate, Volume, and Voice: If synthesized speech is produced, the user can specify the following: (Level A)
  • Speech rate
  • Speech volume (independently of other sources of audio)
  • Voice, when more than one voice is available
1.6.2 Speech Pitch and Range: If synthesized speech is produced, the user can specify the following if offered by the speech synthesizer: (Level AA)
  • Pitch (average frequency of the speaking voice)
  • Pitch range (variation in average frequency)

Note: Because the technical implementations of text to speech engines vary (e.g. formant-based synthesis, concatenative synthesis), a specific engine may not support varying pitch or pitch range. A user agent should expose the availability of pitch and pitch range control if the currently selected or installed text to speech engine offers this capability.

1.6.3 Advanced Speech Characteristics: The user can adjust all of the speech characteristics provided by the speech synthesizer. (Level AAA)
1.6.4 Synthesized Speech Features: If synthesized speech is produced, the following features are provided: (Level AA)
  • User-defined extensions to the synthesized speech dictionary.
  • "Spell-out": text is spelled one character at a time, or according to language-dependent pronunciation rules.
  • At least two ways of speaking numerals: spoken as individual digits and punctuation (e.g. "one two zero three point five" for 1203.5 or "one comma two zero three point five" for 1,203.5), and spoken as full numbers are spoken (e.g. "one thousand, two hundred and three point five" for 1203.5).
  • At least two ways of speaking punctuation: spoken literally, and with punctuation understood from speech characteristics like pauses.
1.6.5 Synthesized Speech Language: If synthesized speech is produced and more than one language is available, the user can change the language. (Level AA)
Implementing Guideline 1.7 - Enable configuration of user stylesheets
1.7.1 Support User Stylesheets: If the user agent supports a mechanism for author stylesheets, the user agent also provides a mechanism for user stylesheets. (Level A)
1.7.2 Apply User Stylesheets: If user stylesheets are supported, then the user can enable or disable user stylesheets for: (Level A)
  • All pages on specified websites, or
  • All pages
1.7.3 Disable Author Stylesheets: If the user agent supports a mechanism for author stylesheets, the user can disable the use of author stylesheets on the current page. (Level A)
1.7.4 Save Copies of Stylesheets: The user can save copies of the stylesheets referenced by the current page. This allows the user to edit and load the copies as user stylesheets. (Level AA)
Implementing Guideline 1.8 - Help users to orient within, and control, windows and viewports
1.8.1 Highlight Viewport: The user can have the viewport with the input focus be highlighted. (Level A)
1.8.2 Move Viewport to Selection and Focus: When a viewport's selection or input focus changes, the viewport's content moves as necessary to ensure that the new selection or input focus location is at least partially in the visible portion of the viewport. (Level A)
1.8.3 Provide Viewport Scrollbars: When the rendered content extends beyond the viewport dimensions, users can have graphical viewports include scrollbars, overriding any values specified by the author. (Level A)
1.8.4 Indicate Viewport Position: The user can determine the viewport's position relative to the full extent of the rendered content. (Level A)
1.8.5 Allow Zoom: The user can rescale content within top-level graphical viewports as follows: (Level A)
  • Zoom in: to 500% or more of the default size
  • Zoom out: to 10% or less of the default size, so the content fits within the height or width of the viewport
1.8.6 Maintain Point of Regard: The point of regard remains visible and at the same location within the viewport when the viewport is resized, when content is zoomed or scaled, or when content formatting is changed. (Level A)
1.8.7 Reflow Text: The user can specify that text content in a graphical top-level viewport reflows so the text forms a single column that fits within the width of the viewport. (Level A)
  • Note 1: Reflow applies even when text is rescaled or zoomed.
  • Note 2: For vertical layout languages (e.g. Mongolian, Han), text should fit within the height of the viewport, rather than its width, to reduce vertical scrolling.
1.8.8 Customize Viewport Highlighting: When highlighting viewports as specified by 1.8.1 Highlight Viewport, the user can customize attributes of the viewport highlighting mechanism (e.g. blink rate for blinking, color and width of borders). (Level AA)
1.8.9 Allow Viewport Resize: The user can resize viewports within restrictions imposed by the platform, overriding any values specified by the author. (Level AA)
1.8.10 Provide Viewport History: For user that implement a history mechanism for top-level viewports (e.g. "back" button), the user can return to any state in the viewport history that is allowed by the content, including a restored point of regard, input focus and selection. (Level AA)
1.8.11 Allow Top-Level Viewport Open on Request: The user can specify whether author content can open new top-level viewports (e.g. windows or tabs). (Level AA)



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