1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
use std::future::Future;
use crate::{
foundation::Key,
painting::{
DecoderCallback, ImageCache, ImageCacheStatus, ImageConfiguration, ImageErrorListener,
ImageProvider, ImageStream, ImageStreamCompleter,
},
};
pub struct ResizeImage {
// Whether the width and height parameters should be clamped to the intrinsic width and height of the image.
pub allow_upscaling: bool,
// The height the image should decode to and cache.
pub height: Option<i32>,
// // The ImageProvider that this class wraps.
// imageProvider: ImageProvider<Object>,
// The width the image should decode to and cache.
pub width: Option<i32>,
}
impl ResizeImage {
// Converts a key into an ImageStreamCompleter, and begins fetching the image.
// load(ResizeImageKey key, DecoderCallback decode) -> ImageStreamCompleter
// Converts an ImageProvider's settings plus an ImageConfiguration to a key that describes the precise image to load.
// obtainKey(ImageConfiguration configuration) -> Future<ResizeImageKey>
// Called by resolve with the key returned by obtainKey.
// resolveStreamForKey(ImageConfiguration configuration, ImageStream stream, ResizeImageKey key, ImageErrorListener handleError) -> void
}
impl ImageProvider for ResizeImage {
fn create_stream(&self, configuration: ImageConfiguration) -> ImageStream {
todo!()
}
fn evict(
&self,
cache: Option<ImageCache>,
configuration: ImageConfiguration, /*= ImageConfiguration.empty*/
) -> Box<dyn Future<Output = bool>> {
todo!()
}
fn load(&self, key: Key, decode: Box<DecoderCallback>) -> ImageStreamCompleter {
todo!()
}
fn obtain_cache_status(
&self,
configuration: ImageConfiguration,
handle_error: Option<Box<ImageErrorListener>>,
) -> Box<dyn Future<Output = Option<ImageCacheStatus>>> {
todo!()
}
fn obtain_key(&self, configuration: ImageConfiguration) -> Box<dyn Future<Output = Key>> {
todo!()
}
fn resolve(&self, configuration: ImageConfiguration) -> ImageStream {
todo!()
}
fn resolve_stream_for_key(
&self,
configuration: ImageConfiguration,
stream: ImageStream,
key: Key,
handle_error: Option<Box<ImageErrorListener>>,
) {
todo!()
}
}
// impl<T: Default> Default for ImageProvider<T> {
// fn default() -> Self {
// Self(Default::default())
// }
// }