Trait DataSourceExt 

pub trait DataSourceExt: IsA<DataSource> + 'static {
    // Provided methods
    fn max_zoom_level(&self) -> u32 { ... }
    fn min_zoom_level(&self) -> u32 { ... }
    fn tile_data_async<P: FnOnce(Result<Option<Bytes>, Error>) + 'static>(
        &self,
        x: i32,
        y: i32,
        zoom_level: i32,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    ) { ... }
    fn tile_data_future(
        &self,
        x: i32,
        y: i32,
        zoom_level: i32,
    ) -> Pin<Box_<dyn Future<Output = Result<Option<Bytes>, Error>> + 'static>> { ... }
    fn set_max_zoom_level(&self, zoom_level: u32) { ... }
    fn set_min_zoom_level(&self, zoom_level: u32) { ... }
    fn start_request(
        &self,
        x: i32,
        y: i32,
        zoom_level: i32,
        cancellable: Option<&impl IsA<Cancellable>>,
    ) -> Option<DataSourceRequest> { ... }
    fn connect_received_data<F: Fn(&Self, i32, i32, i32, &Bytes) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_max_zoom_level_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_min_zoom_level_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
}

Trait containing all DataSource methods.

Implementors

DataSource, TileDownloader

Provided Methods

fn max_zoom_level(&self) -> u32

Gets the data source’s maximum zoom level.

Returns

the maximum zoom level this data source supports

fn min_zoom_level(&self) -> u32

Gets the data source’s minimum zoom level.

Returns

the minimum zoom level this data source supports

fn tile_data_async<P: FnOnce(Result<Option<Bytes>, Error>) + 'static>( &self, x: i32, y: i32, zoom_level: i32, cancellable: Option<&impl IsA<Cancellable>>, callback: P, )

Gets the data for the tile at the given coordinates.

Some data sources may return data multiple times. For example, TileDownloader may return data from a cache, then return updated data from the network. [received-data][struct@crate::ShumateDataSource#received-data] is emitted each time data is received, then @callback is called after the last update.

x

the X coordinate to fetch

y

the Y coordinate to fetch

zoom_level

the Z coordinate to fetch

cancellable

a #GCancellable

callback

a #GAsyncReadyCallback to execute upon completion

fn tile_data_future( &self, x: i32, y: i32, zoom_level: i32, ) -> Pin<Box_<dyn Future<Output = Result<Option<Bytes>, Error>> + 'static>>

fn set_max_zoom_level(&self, zoom_level: u32)

Sets the data source’s maximum zoom level.

zoom_level

the maximum zoom level

fn set_min_zoom_level(&self, zoom_level: u32)

Sets the data source’s minimum zoom level.

zoom_level

the minimum zoom level

fn start_request( &self, x: i32, y: i32, zoom_level: i32, cancellable: Option<&impl IsA<Cancellable>>, ) -> Option<DataSourceRequest>

Begins a request for a tile.

x

X coordinate to request

y

Y coordinate to request

zoom_level

zoom level to request

cancellable

for cancelling the request

Returns

a DataSourceRequest object for tracking the request.

fn connect_received_data<F: Fn(&Self, i32, i32, i32, &Bytes) + 'static>( &self, f: F, ) -> SignalHandlerId

👎Deprecated:

Since 1.1

Emitted when data is received for any tile. This includes any intermediate steps, such as data from the file cache, as well as the final result.

Deprecated since 1.1

Use start_request() and connect to the notify signals of the resulting DataSourceRequest.

x

the X coordinate of the tile

y

the Y coordinate of the tile

zoom_level

the zoom level of the tile

bytes

the received data

fn connect_max_zoom_level_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

fn connect_min_zoom_level_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<O: IsA<DataSource>> DataSourceExt for O