Show a color ramp legend for vector heatmap layers (Request in QGIS)

[qgis-bot]

Request for documentation

From pull request qgis/QGIS#57327
Author: @nyalldawson
QGIS version: 3.38

Show a color ramp legend for vector heatmap layers

PR Description:

Instead of showing no legend for these layers, show the color ramp as a gradient bar.

Users can control the text for the min/max labels, the direction of the bar, and the font settings.

This also reworks the vector renderer API so that renderers have the flexibility to create any type of legend nodes, not just QgsSymbolLegendNodes. This may be useful for other renderers in future too.

Sponsored by Rubicon Concierge Real Estate Services

Commits tagged with [need-docs] or [FEATURE]