kgabryje commented on code in PR #34561:
URL: https://github.com/apache/superset/pull/34561#discussion_r2256348171
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superset/config.py:
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@@ -865,6 +865,14 @@ class D3TimeFormat(TypedDict, total=False):
timedelta(seconds=60).total_seconds() * 1000
)
+# Tiled screenshot configuration for large dashboards
+SCREENSHOT_TILED_ENABLED = True # Enable tiled screenshots for large
dashboards
+SCREENSHOT_TILED_CHART_THRESHOLD = 20 # Minimum charts to trigger tiled
screenshots
+SCREENSHOT_TILED_HEIGHT_THRESHOLD = (
Review Comment:
Yes it's for alerts/reports. We can set viewport width in report creation
modal, and height can be set in config.py.
This however is an optimization for large dashboards - if dashboard is
longer than `SCREENSHOT_TILED_HEIGHT_THRESHOLD`, then we use tiled screenshots.
Tiled screenshots mean that instead of screenshotting the entire dashboard
(i.e. the `.standalone` element), we screenshot only a fragment
(`SCREENSHOT_TILED_VIEWPORT_HEIGHT`) multiple times.
For example, if the dashboard has height 10000px, and
`SCREENSHOT_TILED_VIEWPORT_HEIGHT` is 3000, we take 3 3000px screenshots and 1
1000px screenshot and glue them together into 1 10000px image.
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