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Merge pull request #998 from bartvde/tilemgrdefault

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enable TileManager by default as suggested by @marcjansen and @bartvde ... (r=@ahocevar)
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Bart van den Eijnden
2013-06-06 05:17:19 -07:00
parent 4d52d4aeb5
commit 1c21d9cc15
18 changed files with 51 additions and 34 deletions
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notes/2.13.md
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@@ -65,18 +65,16 @@ This was necessary for WCS support because there are no properties in common bet
## Layer.Grid: Tile queue and tileLoadingDelay changes
With the introduction of OpenLayers.TileManager, tile queueing has become optional. The default behavior is back to how it was in OpenLayers 2.11. To use a tile queue in 2.13, the map needs to be configured with a tileManager, e.g.:
With the introduction of OpenLayers.TileManager, tile queueing has become optional but is enabled by default. To not use a tile queue in 2.13, the map needs to be configured with tileManager: null, e.g.:
var map = new OpenLayers.Map('map', {
tileManager: new OpenLayers.TileManager()
tileManager: null
});
The tile queue also works differently than before: it no longer loads one tile at a time. Instead, it waits after a zoom or pan, and loads all tiles after a delay. This has the same effect as previously (less burden on the server), but makes use of the browser's request management. The delay can be configured separately for zooming and moving the map, using the `zoomDelay` (default: 200 ms) and `moveDelay` (default: 100 ms) config options of the TileManager.
The tile queue works differently than before: it no longer loads one tile at a time. Instead, it waits after a zoom or pan, and loads all tiles after a delay. This has the same effect as previously (less burden on the server), but makes use of the browser's request management. The delay can be configured separately for zooming and moving the map, using the `zoomDelay` (default: 200 ms) and `moveDelay` (default: 100 ms) config options of the TileManager. If you want to have the map be associated with a TileManager with non-default options, supply the options instead or create your own TileManager instance and supply it to the Map constructor.
The `moveDelay` is the replacement for the `tileLoadingDelay` layer config option, which has been removed. There is no magic any more to only use the delay when requestAnimationFrame is not natively available.
In general, when targeting mobile devices or when using slow servers or connections for tiled layers, it is recommended to configure the map with a TileManager.
## Layer.Grid: Resize transitions by default
The `transitionEffect` property for grid layers has been changed to "resize" by default. This allows smooth transitions with animated zooming (also enabled by default). If resize transitions are not wanted for individual layers, set `transitionEffect` to `null`.