Annotations

See also

• Lizardtech DjVu Reference: 8.3.4 Annotation Chunk;

• djvused manual: Annotation syntax.

class djvu.decode.Annotations

Abstract base for document and page annotations.

Inheritance diagram:

wait()

Wait until the associated S-expression is available.

sexpr

Returns

the associated S-expression.

Return type

djvu.sexpr.Expression.

Raises

• NotAvailable – if the S-expression is not available; then, PageInfoMessage messages with empty page_job may be emitted.

• JobFailed – on failure.

class djvu.decode.DocumentAnnotations(document[, shared=True])

If shared is true and no document-wide annotations are available, shared annotations are considered document-wide.

See also

Actual and proposed changes to the DjVu format: Document annotations and metadata.

document

Returns

the concerned document.

Return type

Document.

class djvu.decode.PageAnnotations(page)

page

Returns

the concerned page.

Return type

Page.

Mapareas (overprinted annotations)

See also

Lizardtech DjVu Reference: 8.3.4.2 Maparea (overprinted annotations).

class djvu.decode.Hyperlinks(annotations)

A sequence of (maparea …) S-expressions.

The following symbols are pre-defined:

djvu.decode.ANNOTATION_MAPAREA

>>> ANNOTATION_MAPAREA
Symbol('maparea')

djvu.decode.MAPAREA_SHAPE_RECTANGLE

>>> MAPAREA_SHAPE_RECTANGLE
Symbol('rect')

djvu.decode.MAPAREA_SHAPE_OVAL

>>> MAPAREA_SHAPE_OVAL
Symbol('oval')

djvu.decode.MAPAREA_SHAPE_POLYGON

>>> MAPAREA_SHAPE_POLYGON
Symbol('poly')

djvu.decode.MAPAREA_SHAPE_LINE

>>> MAPAREA_SHAPE_LINE
Symbol('line')

djvu.decode.MAPAREA_SHAPE_TEXT

>>> MAPAREA_SHAPE_TEXT
Symbol('text')

djvu.decode.MAPAREA_URI

>>> MAPAREA_URI
Symbol('url')

djvu.decode.MAPAREA_URL

Equivalent to MAPAREA_URI.

Border style

See also

Lizardtech DjVu Reference: 8.3.4.2.3.1.1 Border type, 8.3.4.2.3.1.2 Border always visible.

The following symbols are pre-defined:

djvu.const.MAPAREA_BORDER_NONE

>>> MAPAREA_BORDER_NONE
Symbol('none')

djvu.const.MAPAREA_BORDER_XOR

>>> MAPAREA_BORDER_XOR
Symbol('xor')

djvu.const.MAPAREA_BORDER_SOLID_COLOR

>>> MAPAREA_BORDER_SOLID_COLOR
Symbol('border')

djvu.const.MAPAREA_BORDER_SHADOW_IN

>>> MAPAREA_BORDER_SHADOW_IN
Symbol('shadow_in')

djvu.const.MAPAREA_BORDER_SHADOW_OUT

>>> MAPAREA_BORDER_SHADOW_OUT
Symbol('shadow_out')

djvu.const.MAPAREA_BORDER_ETCHED_IN

>>> MAPAREA_BORDER_ETCHED_IN
Symbol('shadow_ein')

djvu.const.MAPAREA_BORDER_ETCHED_OUT

>>> MAPAREA_BORDER_ETCHED_OUT
Symbol('shadow_eout')

djvu.const.MAPAREA_SHADOW_BORDERS

A sequence of all shadow border types.

>>> MAPAREA_SHADOW_BORDERS
(Symbol('shadow_in'), Symbol('shadow_out'), Symbol('shadow_ein'), Symbol('shadow_eout'))

djvu.const.MAPAREA_BORDER_ALWAYS_VISIBLE

>>> MAPAREA_BORDER_ALWAYS_VISIBLE
Symbol('border_avis')

The following numeric constant are pre-defined:

djvu.const.MAPAREA_SHADOW_BORDER_MIN_WIDTH

>>> MAPAREA_SHADOW_BORDER_MIN_WIDTH
1

djvu.const.MAPAREA_SHADOW_BORDER_MAX_WIDTH

>>> MAPAREA_SHADOW_BORDER_MAX_WIDTH
32

Highlight color and opacity

See also

Lizardtech DjVu Reference: 8.3.4.2.3.1.3 Highlight color and opacity.

The following symbols are pre-defined:

djvu.const.MAPAREA_HIGHLIGHT_COLOR

>>> MAPAREA_HIGHLIGHT_COLOR
Symbol('hilite')

djvu.const.MAPAREA_OPACITY

>>> MAPAREA_OPACITY
Symbol('opacity')

The following numeric constant are pre-defined:

djvu.const.MAPAREA_OPACITY_MIN

>>> MAPAREA_OPACITY_MIN
0

djvu.const.MAPAREA_OPACITY_DEFAULT

>>> MAPAREA_OPACITY_DEFAULT
50

djvu.const.MAPAREA_OPACITY_MAX

>>> MAPAREA_OPACITY_MAX
100

Line and text parameters

See also

Lizardtech DjVu Reference: 8.3.4.2.3.1.4 Line and Text parameters.

The following symbols are pre-defined:

djvu.const.MAPAREA_ARROW

>>> MAPAREA_ARROW
Symbol('arrow')

djvu.const.MAPAREA_LINE_WIDTH

>>> MAPAREA_LINE_WIDTH
Symbol('width')

djvu.const.MAPAREA_LINE_COLOR

>>> MAPAREA_LINE_COLOR
Symbol('lineclr')

djvu.const.MAPAREA_BACKGROUND_COLOR

>>> MAPAREA_BACKGROUND_COLOR
Symbol('backclr')

djvu.const.MAPAREA_TEXT_COLOR

>>> MAPAREA_TEXT_COLOR
Symbol('textclr')

djvu.const.MAPAREA_PUSHPIN

>>> MAPAREA_PUSHPIN
Symbol('pushpin')

The following numeric constants are pre-defined:

djvu.const.MAPAREA_LINE_MIN_WIDTH

>>> MAPAREA_LINE_MIN_WIDTH
1

The following default colors are pre-defined:

djvu.const.MAPAREA_LINE_COLOR_DEFAULT

>>> MAPAREA_LINE_COLOR_DEFAULT
'#000000'

djvu.const.MAPAREA_TEXT_COLOR_DEFAULT

>>> MAPAREA_TEXT_COLOR_DEFAULT
'#000000'

Initial document view

See also

Lizardtech DjVu Reference: 8.3.4.1 Initial Document View.

The following symbols are pre-defined:

djvu.const.ANNOTATION_BACKGROUND

>>> ANNOTATION_BACKGROUND
Symbol('background')

djvu.const.ANNOTATION_ZOOM

>>> ANNOTATION_ZOOM
Symbol('zoom')

djvu.const.ANNOTATION_MODE

>>> ANNOTATION_MODE
Symbol('mode')

djvu.const.ANNOTATION_ALIGN

>>> ANNOTATION_ALIGN
Symbol('align')

Metadata

See also

Actual and proposed changes to the DjVu format (Metadata Annotations, Document Annotations and Metadata).

class djvu.decode.Metadata

A metadata mapping.

The following sets contain noteworthy metadata keys:

djvu.const.METADATA_BIBTEX_KEYS

Keys borrowed from the BibTeX bibliography system.

>>> for key in sorted(METADATA_BIBTEX_KEYS):
...     print(repr(key))
...
Symbol('address')
Symbol('annote')
Symbol('author')
Symbol('booktitle')
Symbol('chapter')
Symbol('crossref')
Symbol('edition')
Symbol('editor')
Symbol('howpublished')
Symbol('institution')
Symbol('journal')
Symbol('key')
Symbol('month')
Symbol('note')
Symbol('number')
Symbol('organization')
Symbol('pages')
Symbol('publisher')
Symbol('school')
Symbol('series')
Symbol('title')
Symbol('type')
Symbol('volume')
Symbol('year')

djvu.const.METADATA_PDFINFO_KEYS

Keys borrowed from the PDF DocInfo.

>>> for key in sorted(METADATA_PDFINFO_KEYS):
...     print(repr(key))
...
Symbol('Author')
Symbol('CreationDate')
Symbol('Creator')
Symbol('Keywords')
Symbol('ModDate')
Symbol('Producer')
Symbol('Subject')
Symbol('Title')
Symbol('Trapped')

djvu.const.METADATA_KEYS

Sum of METADATA_BIBTEX_KEYS and METADATA_PDFINFO_KEYS.

The following symbols are pre-defined:

djvu.const.ANNOTATION_METADATA

>>> ANNOTATION_METADATA
Symbol('metadata')

Printed headers and footers

See also

Lizardtech DjVu Reference (8.3.4.3 Printed headers and footers)

The following symbols are pre-defined:

djvu.const.ANNOTATION_PRINTED_HEADER

>>> ANNOTATION_PRINTED_HEADER
Symbol('phead')

djvu.const.ANNOTATION_PRINTED_FOOTER

>>> ANNOTATION_PRINTED_FOOTER
Symbol('pfoot')

djvu.const.PRINTER_HEADER_ALIGN_LEFT

>>> PRINTER_HEADER_ALIGN_LEFT
Symbol('left')

djvu.const.PRINTER_HEADER_ALIGN_CENTER

>>> PRINTER_HEADER_ALIGN_CENTER
Symbol('center')

djvu.const.PRINTER_HEADER_ALIGN_RIGHT

>>> PRINTER_HEADER_ALIGN_RIGHT
Symbol('right')