ant-design/docs/spec/lightweight.en-US.md
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Design Patterns Principles 7 Keep it Lightweight

Fitts's Law is an ergonomic principle that ties the size of a target and its contextual proximity to ease of use. In other words, if a tool is close at hand and large enough to target, then we can improve the user's interaction. Putting tools in context makes for lightweight interaction.

**Fitts's Law**: The time to acquire a target is a function of the distance to and size of the target. It is proportional to the distance to the target and inversely proportional to the width of the target.

Always-Visible Tools

example of Always-Visible Tools, from Zhihu

If an action is critical, expose it directly in the interface and keep it always visible.



Hover-Reveal Tools

example of Hover-Reveal Tools

Instead of making Contextual Tools always visible, we can show them on demand. One way to do this is to reveal the tools when the user pauses the mouse over an object.



Toggle-Reveal Tools

example of Toggle-Reveal Tools

Toggle a tool mode for an area or page when the actions are not the main flow. The tools to accomplish this are revealed on the activation of the toggle.



Visible Area ≠ Clickable Area

example of hypertext hot spot

The clickable area of hypertext is affected by the length of the string in a cell. The whole cell can be set to a hot spot in order to be triggered easier.


example of button hot spot

Increase the clickable hot spot to strengthen the responsiveness rather than increase the size of the button.

Note that it is especially suited for Mobile.