Fix the chart axis label overlapping the chart area when perform navigation.

[aruljenithberkmans]

Root Cause of the Issue

The issue occurred because the text measure font manager wasn't set when the chart view handler was null, especially after navigating back to the base view. This caused the chart axis labels to overlap the chart area.

Description of Change

We fixed the issue by implementing a fallback to provide a default font manager when the chart view handler is null. This ensures the axis labels are always measured and rendered correctly, even after navigation.

Issues Fixed

Fixes: #85

Test Cases

• Tested the tooltip text and position for navigation.
• Tested the Data Label text and position for navigation it rendered as expected.
• Tested the trackball labels text and position.

Screenshots

Before:

NavigationBeforeChanges.mp4

After:

NavigationAfterChanges.mp4

[Saravanan-Madhesh]

@aruljenithberkmans mention test cases.

[Saravanan-Madhesh]

Changes was confirmed.