Projects/Usability/HIG/Tooltip

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Purpose

A tool-tip is a small pop-up window that labels the unlabeled control being pointed to, such as toolbar controls without caption or command buttons. When providing more descriptive text the control is called info-tip. Tips are a form of progressive disclosure, eliminating the need always to have descriptive text on the screen. This time-delay mechanism makes tips very convenient, but it also reduces their discoverability. When tips are used consistently they support user’s expectation and foster predictability.

Examples

Guidelines

  • Use tips to label unlabeled controls and to provide additional information.
  • Don’t use tips for warnings.
  • Keep tips brief, typically five words or less for tool-tips; whenever appropriate, provide keyboard short-cuts and default values.
  • Format info-tips to make their content easier to read and scan by grouping and aligning the content. The information should be:
    • concise: large, unformatted blocks of text are difficult to read and overwhelming
    • helpful: it shouldn't be obvious or just repeat what is already on the screen)
    • supplemental: important information should be communicated using self-explanatory control labels or in-place supplemental text)
    • (in discussion) static: tips should not change from one instance to the next)
  • (in discussion) If the control is disabled, add a short explanation about the reason to the tip. Do not add information beyond that.
  • Consider to add small info buttons for use tips with a touch screen.

(in discussion)

  • Do not use icons and formattings for tips of unlabeled controls.
  • Use info-tips with icons and formattings
    • if tips describe comprehensive functions,
    • when content is lengthy and formatting improves readability
    • for tips that are implemented primarily for joy of use.

Implementation

QToolTip


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