Add contour line label provider for raster layers - #2
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Introduces QgsRasterContourLabelProvider and QgsRasterLayerContourLabeling, enabling labels placed along contour lines generated on-the-fly from raster DEM data via GDAL's contour generation API. Key changes: - New QgsRasterContourLabelProvider generates contour geometries in map CRS and registers them as line features with the PAL labeling engine - New QgsRasterLayerContourLabeling configuration class with contour interval, index interval, downscale factor, and label-index-only settings - QgsRasterLayerLabelProvider changed from final to extensible (protected members, virtual generateLabels, override instead of final) - Factory dispatch in createFromElement handles "contour" type https://claude.ai/code/session_01TaS7A3X8CXBYqJzq2EMLak
Generate SIP bindings for QgsRasterLayerContourLabeling and update the base class ConvertToSubClassCode for the "contour" type. Add Python tests covering properties, clone, XML round-trip, scale visibility, and layer serialization. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Adds QgsRasterContourLabelSettingsWidget with controls for band,
contour interval, index interval, downscale, number format, and
index-only labeling. Integrates as a third option ("Label with
Contour Lines") in the raster layer Labels tab.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add %Include in core_auto.sip and create auto_additions file so the Python bindings compile and the prepare_sip pre-commit hook passes. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Band, contour interval, index interval, and downscale are already configured in the Symbology tab via QgsRasterContourRenderer. The label provider now reads these values directly from the renderer at render time, keeping the two tabs in sync and avoiding confusing duplication. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Introduces QgsRasterContourLabelProvider and QgsRasterLayerContourLabeling, enabling labels placed along contour lines generated on-the-fly from raster DEM data via GDAL's contour generation API.
Key changes:
https://claude.ai/code/session_01TaS7A3X8CXBYqJzq2EMLak
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