liang-wenjie opened a new pull request, #44140:
URL: https://github.com/apache/superset/pull/44140
## Summary
Add a new ECharts chart type "Big Number with YoY & MoM" that renders a KPI
card with an optional title, a big number, and MoM/YoY comparison rows
(reference: "Big Number with Trendline").
- Two mutually exclusive comparison sources per slot: time shift (percentage
change) or comparison value metric (column / custom SQL rendered as the
computed value with direction arrows)
- Time column (X axis) + time grain controls; adhoc SQL time columns
supported
- Open time ranges use point-to-point comparison (missing points render as
"—")
- 5-tier ratio font sizes; configurable positions/gaps (blank = 0);
auto-spacing against overlap
- Big number number/currency format independent from MoM/YoY formats
- Chinese translations and light/dark thumbnails
Closes #44139.
## BEFORE / AFTER
Adds a new chart type; existing charts are unaffected.
## TESTING INSTRUCTIONS
1. Create a chart with the new "带同比与环比的大数字" (Big Number with YoY & MoM) viz
type.
2. Configure a main metric and optionally a title.
3. For each comparison slot, either:
- choose a time shift (e.g. "1 month ago" / "1 year ago") to show the
percentage change, or
- pick a comparison value metric (column or custom SQL) to render the
value directly with an up/down arrow.
4. With a time column set and no time range ("No filter"), the comparison
matches the previous period point-to-point; missing points render as "—".
5. Verify layout controls: 5-tier font sizes, gaps from title / big number,
comparison spacing, swap MoM and YoY positions, per-slot percent difference
formats.
## ADDITIONAL INFORMATION
- Has associated issue: #44139
- Changes UI: yes
- Introduces new feature: yes
- Python backend unchanged
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