feat(dataZoom): change moveHandler cursor icon to move

[ribeirompl]

Brief Information

This pull request is in the type of:

• bug fixing
• new feature
• others

What does this PR do?

Change cursor icon to more intuitive 'move', for dataZoom slider moveHandle

Fixed issues

• [Feature] Change cursor icon to more intuitive 'move', for dataZoom slider moveHandle #20303

Details

Before: What was the problem?

The Move/Drag icon is not intuitive, and it makes it difficult to know whether you're busy resizing or dragging, when the mouse is nearby the edge.

Original Move/Drag icon	New Move/Drag icon

Document Info

One of the following should be checked.

• This PR doesn't relate to document changes
• The document should be updated later
• The document changes have been made in apache/echarts-doc#xxx

Misc

ZRender Changes

• This PR depends on ZRender changes (ecomfe/zrender#xxx).

Related test cases or examples to use the new APIs

N.A.

Others

Merging options

• Please squash the commits into a single one when merging.

Other information

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[Ovilia]

The old one was correct because this is the cursor for single directional (vertical or horizontal). 'move' means it can move in both directions, but in fact it can only move in one.

[ribeirompl]

I did some more research, and it appears that the main icon used for movement in a restricted container is the 'default' icon.

The main examples are scrollbars, in browser windows or other applications:

Example scrollbar in Excel	Example scrollbar in VSCode

My main issue with the current icon, is for the case below:

It is not obvious from a UX perspective, whether the mouse is going to resize or move the view. In the image above it will actually move the container, but if you shift the cursor 1 pixel down it will resize. But that slight movement has no visual changes/indication to the user as to what will happen.

Therefore I propose to change the movement cursor to the 'default' cursor, as used in scrollbars.

[Ovilia]

I think you made a great point, especially with the research of other apps. But this may cause break change so I'd like to include it in the next major release v6.0.0. It's expected to be released earlier next year.

[github-actions]

The changes brought by this PR can be previewed at: https://echarts.apache.org/examples/editor?version=PR-20304@7fe6fa2

[echarts-bot]

Congratulations! Your PR has been merged. Thanks for your contribution! 👍