tooltips | Better Tooltips - Wurm Unlimited mod

This is what fixed it for me:

ChartJS provides a callback that allows you to customize the contents of your tooltip. ChartJS also has many other Tooltip callbacks that come in handy for customizing the look and feel of your graphs, and react-chartjs-2, being a wrapper around ChartJS, allows the same functionality.

Add a plugins object containing tooltip configuration as below:

I can see you are trying to remove the label from your chart i.e is from the pie of your chart. So to inform you if you don't know that label is coming from "chartjs-plugin-labels"

Either you can remove it, if not you can try below solution

Yes, you can show a tooltip for your nodes that you have drawn on the drawing surface. To do so, you need to do the followings:

• Implement hit-testing for your node, so you can get the node under the mouse position.
• Create a timer and In mouse move event handler of the drawing surface, do hit-testing to find the hot item. If the hot node is not same as the current hot node, you stop the timer, otherwise, if there's a new hot item you start the timer.
• In the timer tick event handler, check if there's a hot item, show the tooltip and stop the time.
• In the mouse leave event of the drawing surface, stop the timer.

And here is the result, which shows tooltip for some points in a drawing:

The above algorithm, is being used in internal logic of ToolStrip control to show tooltip for the tool strip items (which are not control). So without wasting a lot of windows handle, and using a single parent control and a single tooltip, you can show tooltip for as many nodes as you want.

Code Example - Show Tooltip for some points in a drawing

Here is the drawing surface:

I had to make a custom tooltip to get this to work.

This will put the name of the cell (the root name) in the tooltip, as well.

When PyQt calls a slot (which can be any callable) it does not just "call" it. In order to achieve the behaviour that additional slot parameters are ignored it analyzes the callable and only passes the appropriate number of parameters. You render this mechanism useless by having your decorator return a callable that accepts any number of parameters and simply passes all of them on to the actual function.

You have two options:

• Adjust your decorator so that it returns a callable that accepts exactly the right amount of parameters (I suspect that to be rather difficult).
• Use the PyQt pyqtSlot decorator on top of your own decorator. That decorator defines the signature of the slot and makes the above mentioned behaviour working again, because PyQt then knows that the slot has no parameters:

You can use "@{name with space} and @{y_y:y}

I have done exactly this (but vertical line only) in a previous version of one of my projects. Unfortunately this feature has been removed but the older source code file can still be accessed via my github.

The key is this section of the code:

react-chartjs-2 has 2 major versions relevant to this issue: v2, which has support for chart.js 2.9.4 and below, and v3, which significantly changes a lot of options and configurations, and which supports chart.js 3.0.0 and above.

The original fork of your codesandbox link uses chart.js: 2.9.4 and react-chartjs-2: 2.1.1, which differs from the sandbox link you provided, which uses chart.js: 3.5.1 and react-chartjs-2: 3.0.4. Notably, instead of structuring your options object like