Make zoomLevel refer to a default 256^2 tile size

Currently the zoomLevel is the power of 2 reflecting how many tiles
are in a map edge.

This means that two plugins with two different tileSize will show a
map of different size at the same zoomLevel.

With this patch the zoomLevel is "normalized" upon a tileSize of 256,
regardless of the tile size in use.
In this way, the new 256 based zoom level can be a consistent parameter
also for plugins that are not tile based.

CameraCapabilities therefore now offers two new methods,
m[in,ax]imumZoomLevelAt256, that return the respective value for
the normalized 256^2 tilesize.

It also gets a setTileSize, which is currently not used as all our
plugins use a tile size of 256 (which is the camera capabilities
default tilesize value).

Change-Id: Ib12092fd14faf7fc85f8be5fb799dbd5496b760b
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>

0 files changed, 0 insertions, 0 deletions