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Declutter in correct order and for all layers

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ahocevar
2019-05-05 12:20:38 +02:00
parent 6cfd0b70ed
commit 12289b8ef9
14 changed files with 105 additions and 96 deletions
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changelog/upgrade-notes.md
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@@ -98,6 +98,14 @@ If you were previously using `VectorTile` layers with `renderMode: 'vector'`, yo
If you were previously using `Vector` layers with `renderMode: 'image'`, you have to remove this configuration option. Instead, use the new `ol/layer/VectorImage` layer with your `ol/source/Vector`.
##### New declutter behavior
If a map has more than one layer with `declutter` set to true, decluttering now considers all layers instead of decluttering each layer separately. The higher the z-index of the layer, the higher the priority of decluttered items.
Within a layer, the declutter order has changed. Previously, styles with a lower `zIndex` were prioritized over those with a higher `zIndex`. Now the opposite order is used.
On vector layers, even if decluttered images or texts have a lower z-Index than polygons or lines, they will now be rendered on top of the polygons or lines. For vector tile layers, this was the case already in previous releases.
##### New `prerender` and `postrender` layer events replace old `precompose`, `render` and `postcompose` events
If you were previously registering for `precompose` and `postcompose` events, you should now register for `prerender` and `postrender` events on layers. Instead of the previous `render` event, you should now listen for `postrender`. Layers are no longer composed to a single Canvas element. Instead, they are added to the map viewport as individual elements.