mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-26 19:47:20 +00:00
613b3df367
* Extend image widget with lazy loading support * docs: added from-version to docs update
43 lines
1.8 KiB
Plaintext
43 lines
1.8 KiB
Plaintext
caption: image
|
|
created: 20140416160234142
|
|
modified: 20220721102303815
|
|
tags: Widgets
|
|
title: ImageWidget
|
|
type: text/vnd.tiddlywiki
|
|
|
|
! Introduction
|
|
|
|
The image widget displays images that can be specified as a remote URL or the title of a local tiddler containing the image.
|
|
|
|
! Content and Attributes
|
|
|
|
Any content of the `<$image>` widget is ignored.
|
|
|
|
|!Attribute |!Description |
|
|
|source |The URL of the image, or the title of an image tiddler |
|
|
|width |The width of the image |
|
|
|height |The height of the image |
|
|
|tooltip |The tooltip to be displayed over the image |
|
|
|alt |The alternative text to be associated with the image |
|
|
|class |CSS classes to be assigned to the `<img>` element |
|
|
|loading|<<.from-version "5.2.3">>Optional. Set to `lazy` to enable lazy loading of images loaded from an external URI |
|
|
|
|
The width and the height can be specified as pixel values (eg "23" or "23px") or percentages (eg "23%"). They are both optional; if not provided the browser will use CSS rules to size the image.
|
|
|
|
! Image Status Classes
|
|
|
|
<<from-version "5.2.2">> The following CSS classes are automatically added to the `<img>` element to indicate the status of the image. Note that only one of these classes will be added at the same time.
|
|
|
|
|''tc-image-loading'' |When the image is being loaded |
|
|
|''tc-image-loaded'' |The image has been loaded successfully |
|
|
|''tc-image-error'' |The image could not be loaded |
|
|
|
|
! External Images and the ''_canonical_uri'' field
|
|
|
|
When used to display tiddler-based images, the image widget operates in two distinct modes:
|
|
|
|
* If the ''_canonical_uri'' field is present then it is used as the ''src'' attribute of the generated `<img>` element and the ''text'' field is ignored
|
|
* Without the ''_canonical_uri'' field, the image widget generates an `<img>` element that embeds the image data directly using a `data:` URI.
|
|
|
|
See ExternalImages for more details.
|