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TiddlyWiki5/editions/tw5.com/tiddlers/widgets/ImageWidget.tid
Jermolene 9547a1f01c First pass at external image support
A bunch of little changes that together enable external image support.
Try:

```
tiddlywiki editions/tw5.com --verbose --build externalimages
```

Then open `externalimages.html`, look for the images in the more/types
tab of the sidebar, open them and verify that they are set with an
external SRC attribute, not a data URI.
2014-06-12 08:36:30 +01:00

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title: ImageWidget
created: 20140416160234142
modified: 20140611160234142
tags: widget
! 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 as a number |
|height |The height of the image |
|tooltip |The tooltip to be displayed over the image |
|class |CSS classes to be assigned to the `<img>` element |
! 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.