Struct TileDownloader

pub struct TileDownloader { /* private fields */ }

A DataSource that asynchronously downloads tiles from an online service using a given template.

It contains an internal FileCache to cache the tiles on the system.

Properties

url-template

A template for construting the URL to download a tile from.

The template has the following replacements:

• “{x}”: The X coordinate of the tile
• “{y}”: The Y coordinate of the tile
• “{z}”: The zoom level of the tile
• “{tmsy}”: The inverted Y coordinate (i.e. tile numbering starts with 0 at the bottom, rather than top, of the map)

Readable | Writeable | Construct Only

DataSource

max-zoom-level

The maximum zoom level

Readable | Writeable | Construct

min-zoom-level

The minimum zoom level

Readable | Writeable | Construct

Implements

DataSourceExt, [trait@glib::ObjectExt]

GLib type: GObject with reference counted clone semantics.

Implementations

impl TileDownloader

pub fn new(url_template: &str) -> TileDownloader

Creates a new TileDownloader that fetches tiles from an API and caches them on disk.

See url-template for the format of the URL template.

url_template

a URL template to fetch tiles from

Returns

a newly constructed TileDownloader

pub fn url_template(&self) -> Option<GString>

A template for construting the URL to download a tile from.

The template has the following replacements:

• “{x}”: The X coordinate of the tile
• “{y}”: The Y coordinate of the tile
• “{z}”: The zoom level of the tile
• “{tmsy}”: The inverted Y coordinate (i.e. tile numbering starts with 0 at the bottom, rather than top, of the map)

Trait Implementations

impl Clone for TileDownloader

fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the object. Dropping the object will decrement it again.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TileDownloader

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl HasParamSpec for TileDownloader

type ParamSpec = ParamSpecObject

type SetValue = TileDownloader

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(&str) -> ParamSpecObjectBuilder<'_, TileDownloader>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for TileDownloader

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Hashes the memory address of this object.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for TileDownloader

fn cmp(&self, other: &Self) -> Ordering

Comparison for two GObjects.

Compares the memory addresses of the provided objects.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl ParentClassIs for TileDownloader

type Parent = DataSource

impl<OT: ObjectType> PartialEq<OT> for TileDownloader

fn eq(&self, other: &OT) -> bool

Equality for two GObjects.

Two GObjects are equal if their memory addresses are equal.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<OT: ObjectType> PartialOrd<OT> for TileDownloader

fn partial_cmp(&self, other: &OT) -> Option<Ordering>

Partial comparison for two GObjects.

Compares the memory addresses of the provided objects.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for TileDownloader

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for TileDownloader

impl IsA<DataSource> for TileDownloader