Delphi/Lazarus visual component for displaying a map. Could use any map tile provider (currently implemented OpenStreetMap, OpenTopoMap, HERE, Google). Also includes helper classes for storing and downloading map tiles. Demo project implements downloading map tiles from network.
โ Alpha version, interface could change โ
Tested on:
- Delphi XE2 and 10.1, VCL, Windows
- Lazarus 2.1.0 trunk & FPC 3.3.1 trunk, LCL, Windows / Linux
Adding a new tile provider is easy, just learn its API and take implemented providers as example. When you're done, create pull request and I'll happily merge it.
For description of tile URL template placeholders refer to OSM.TilesProvider.FormatTileURL function (or docs)
OSM.SlippyMapUtils
- utility functions, variables and typesOSM.TileStorage
- classesTTileBitmapCache
implementing cache of map tiles organized as a queue andTTileStorage
implementing disc storage of map tiles.OSM.NetworkRequest
- utils and classes for network requesting of map tiles. ClassTNetworkRequestQueue
implements threaded non-blocking queue of network requests. Unit doesn't contain any real network request engine.OSM.NetworkRequest.Synapse
,OSM.NetworkRequest.WinInet
,OSM.NetworkRequest.RTL
contain concrete implementations of network requesting routinesOSM.MapControl
contains classesTMapMark
andTMapMarkList
for managing a set of map points andTMapControl
itselfOSM.TilesProvider
- base abstract class of map tile provider.OSM.TilesProvider.*
contain concrete implementations of map tile providers
Full docs for all units listed above is available here
If you wish to use Synapse network engine and don't have it yet, you can take it from Releases section.