DOCBOOK MEDIAOBJECT PDF

The following is an example of a mediaobject set up for both HTML and FO outputs. The DocBook stylesheets can automatically select the right graphic if the. In DocBook V, three types of external objects are defined: VideoObjects, AudioObjects, and ImageObjects. Additional textual descriptions may be provided. version, [], xsd:anySimpleType, Specifies the DocBook version of the element and its descendants, from group utes ยท xml:lang, [].

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The original graphic element is simple, but not flexible enough to handle multiple output formats. Although informalfigure does not take a title, they both provide additional attributes for handling your graphics:. Each imagedata element indicates its file name and xocbook.

Element mediaobject

You might set the role values for two different vector graphics to fo-fop and fo-xep. A mediaobject element is a container for one or more imageobject elements, each of which has an imagedata element. If you are processing with the FOP processor, then set the parameter preferred. The most frequent problems are matching graphics file formats to document output format, and sizing graphics. When you process this example with the html stylesheet, you get the PNG graphic, and when you process it with the FO stylesheet, you get the PDF graphic.

You could use profiling to select from among several graphic elements, but mediaobject is designed to do it without the need for the profiling step. You might be wondering why the imagedata element needs an imageobject container? If you need to use more than one graphics file format, then you must use the mediaobject element instead of the graphic element.

Because imageobject can also contain an objectinfo element. The automatic selection behavior is controlled by the use. The stylesheets contain several lists of file formats that are acceptable for each output type.

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If so, then it accepts that object and does not consider any others. If the fileref does not have an extension, it checks the graphic. That element can be used to track information about the image, such as the software that created it, the current revision, the author, etc.

If its imagedata element contains a complete SVG graphic and the parameter use.

Stylesheet’s selection process

For cross referencing purposes, put the id attribute on the mediaobject container, unless you are putting that inside another container such as figure. If all of these tests fail on the first imageobjectit repeats them on subsequent objects until it finds an acceptable one. If it does not have a format attribute, it extracts the filename extension from the fileref attribute.

Graphics are a frequent cause of problems in DocBook documents. If you are using XEP, then set the parameter preferred. For example, if you have a choice of XSL-FO processors, then you could designate a graphic format optimized for each one. These attributes let you indicate that the figure can float to the top, left, or right.

mediaobject

Docbooi, the various images in a mediaobject are different formats of the same illustration, with the idea that only one of them at a mediaobnect will be used by the stylesheet. You can turn that behavior off if you set the mediaobjct to zero. If you want finer control, then you have the option to use any role values you want. The start-indent property is controlled by the attribute-set named pgwide.

The same is true for informal. This selection method is often sufficient, but is somewhat less precise than selecting by role. If two objects are acceptable, only the first can ever be selected with this method. You can also use figure and informalfigure to add space above and below your graphic in print output.

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Simplified DocBook DTD: Element mediaobject

If that value is on the list of extensions for that output, then it accepts that object and does not consider any others. The preferred element for graphics is mediaobject.

If that mediaobuect not desirable, then add the changes to the figure. Other stylesheet customizations such as Website or your own will use the value for the stock stylesheet it is based upon. If you use example or informalexamplethen you can use the example. The mediaobject element contains two graphical elements.

The DocBook stylesheets can automatically select the right graphic if the imageobject elements have a role attribute of socbook html or fo. It looks at the first imageobject inside the mediaobject.

If your print content is styled so that headings are at the left margin and body text is indented, then setting this attribute to 1 lets you indicate that the figure is wide and should be medizobject starting at the left margin.

DocBook has two main graphic elements. You could also put sizing attributes there. It can contain several imageobject elements with different specifications.

With figureyou can supply a title, and your figures will be numbered and listed in the optional front-of-the-book List of Figures. Each of these main graphic elements is supplemented with a version to be used inline, named inlinegraphic and inlinemediaobjectrespectively. Remember that the role attribute goes on the mediaobjecct element, not the imagedata.