[BUG] Tooltip flickers when moving the mouse slightly over the same data point #91
Description
Describe the bug
When hovering over a chart using Crystalise Chart, the tooltip appears as expected. However, if the mouse moves even a single pixel while still over the same data point, the tooltip closes and immediately opens again.
This causes a visible flickering effect and makes the tooltip feel unstable.
Expected behavior
If the hovered data point has not changed, the tooltip should remain open and simply keep its current state. It should not close and reopen when the mouse moves slightly within the same data point area.
Suggested behavior:
Before closing and reopening the tooltip, the chart should check whether the hovered data point actually changed. If the tooltip content would be the same, it should keep the existing tooltip instead of recreating it.
This would prevent flickering and provide a smoother hover experience.
To Reproduce
Move mouse 1 pixel over chart to show the tooltip.
Code Example
Screenshots
https://github.com/user-attachments/assets/dcd6ef7c-a4d9-417c-8ceb-704990c60e48
Flutter Environment (please complete the following information):
- Cristalyse Version: [1.17.5]
- Flutter Version: [3.41.1]
- Dart Version: [3.11]
Platform (please complete the following information):
- OS: [Web, Windows]
- Version: [Windows 11]
- Device: [PC]