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Pictures/Graphics


OvationPro can only display certain types of graphics files (currently Sprites, Drawfiles, JPEG files, Artworks files and EPS files - remembering that Drawfiles also capture several other types e.g. Tablemate files.). However, HTML browsers can only currently display JPEG. GIF and PNG files.
Consequently, in addition to extracting the graphics data from the DDL document file, !meDDLe also needs to convert most of the picture types to one or other of the html-friendly graphic file formats. In carrying out this process, all extracted pictures are saved as individual files - with incrementing numerical leafnames - to a separate folder (called Pics) in the user-chosen output directory.
JPEG and EPS files are simply extracted and saved to Pics unaltered. All other formats are converted to PNG format before saving to Pics. (EPS is therefore the only type of input graphics type which !meDDLe cannot properly handle at the moment - in that output files of EPS type cannot be displayed in a browser.)
In addition to extracting/converting graphics, !meDDLe will automatically generate appropriate links in the right place(s) for ‘embedded’ graphics i.e. pictures which keep their relative place in the text. In these cases, each graphic position in the text is given a unique HTML ‘image tag’ of the form Pics/pic001.png, Pics/pic002.png, Pics/pic003.jpg etc. to link with the corresponding picture file in Pics.
For non-embedded graphics, !meDDLe will correctly extract (and convert, if necessary) the picture(s) and save it/them to the Pics folder, but it will not generate corresponding links in the HTML output - see later.
If the source OvationPro/DDL document includes any non-embedded graphics which have been copied from another graphic used in the same document then no duplication of the extracted/converted output graphic file is carried out. This may well lead to gaps in the numerical leafname references in the Pics folder, which is quite normal. (Note that this does not apply to copied embedded graphics which the DDL format treats as separate pictures.)




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