Formatting images for display in Web pages

You can use URN references to embed images in Web pages.

Prerequisite: IIIF service

Instantiate a IIIF service:

using CitableImage
baseurl = "http://www.homermultitext.org/iipsrv"
root = "/project/homer/pyramidal/deepzoom"
service = IIIFservice(baseurl, root)

IIIFservice("http://www.homermultitext.org/iipsrv", "/project/homer/pyramidal/deepzoom")

Compose a markdown display of an image

Format the request for inclusion in a markdown document. Here, we’ll use the optional height parameter to set the result image’s size in pixels.

using CitableObject
img = Cite2Urn("urn:cite2:hmt:vaimg.2017a:VA012RN_0013")

mdembed = markdownImage(img, service; w = 200)

"![image](http://www.homermultitext.org/iipsrv?IIIF=/project/homer/pyramidal/deepzoom/hmt/vaimg/2017a/VA012RN_0013.tif/full/200,/0/default.jpg)"

using Markdown
mdembed |> Markdown.parse

Compose a markdown display linked to an image citation tool

We need an additional parameter for the ImageCitationTool to link to. In this exmaple, we’ll opt to include both a height in pixels and a caption to embed in the markdown.

ict = "http://www.homermultitext.org/ict2/?"
embedwlink = linkedMarkdownImage(ict, img, service; w=100, caption="folio 12 recto")

"[![folio 12 recto)](http://www.homermultitext.org/iipsrv?IIIF=/project/homer/pyramidal/deepzoom/hmt/vaimg/2017a/VA012RN_0013.tif/full/100,/0/default.jpg)](http://www.homermultitext.org/ict2/?urn=urn:cite2:hmt:vaimg.2017a:VA012RN_0013)"

embedwlink |> Markdown.parse

The output is linked to the configured image citation tool.

Compose an HTML display of an image

Format the request for inclusion in an HTML document. Here, we’ll use the optional height parameter to set the result image’s size in pixels.

htmlimg = htmlImage(img, service; w = 200)

"<img class=\"citeImage\" alt=\"image\"  src=\"http://www.homermultitext.org/iipsrv?IIIF=/project/homer/pyramidal/deepzoom/hmt/vaimg/2017a/VA012RN_0013.tif/full/200,/0/default.jpg\" />"