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http://bugs.kde.org/show_bug.cgi?id=159023
------- Additional Comments From alberthilbert hotmail it 2008-03-10 16:59
-------
>About the thickness: we currently have our annotation tools matching as close
>as possible the PDF annotations. Because of that, I don't want to add options
>that we will not be able to eventually write back to the PDF some (not so
>remote) day. So, this is out, sorry.
This is an extract from: PDF Reference, Sixth Edition, version 1.7
(http://www.adobe.com/devnet/acrobat/pdfs/pdf_reference_1-7.pdf), page 630 and
following.
Circle and square annotations are described by an annotation dictionary. The
entries specific to these types of annotations are:
KEY TYPE VALUE
Subtype name (Required) The type of annotation that
this dictionary describes; must be Square
or Circle for a square or circle
annotation, respectively.
BS dictionary (Optional) A border style dictionary
(see Table 8.17 on page 611) specifying the
line width and dash pattern to be used
in drawing the rectangle or ellipse.
Note: The annotation dictionary’s AP
entry, if present, takes precedence over the
Rect and BS entries; see Table 8.15 on
page 606 and Section 8.4.4, “Appearance
Streams.”
IC array (Optional; PDF 1.4) An array of numbers in the
range 0.0 to 1.0 specifying the
interior color with which to fill the
annotation’s rectangle or ellipse. The number
of array elements determines the color
space in which the color is defined:
0 No color; transparent
1 DeviceGray
3 DeviceRGB
4 DeviceCMYK
BE dictionary (Optional; PDF 1.5) A border effect
dictionary describing an effect applied to the
border described by the BS entry (see
Table 8.18).
The entries of Border Style dictionary (BS) are:
KEY TYPE VALUE
Type name (Optional) The type of PDF object that this
dictionary describes; if present, must be
Border for a border style dictionary.
W number (Optional) The border width in points. If this
value is 0, no border is drawn. Default
value: 1.
S name (Optional) The border style:
S (Solid) A solid rectangle
surrounding the annotation.
D (Dashed) A dashed rectangle
surrounding the annotation. The dash pattern
is specified by the D entry (see
below).
B (Beveled) A simulated embossed
rectangle that appears to be raised above the
surface of the page.
I (Inset) A simulated engraved
rectangle that appears to be recessed below the
surface of the page.
U (Underline) A single line along
the bottom of the annotation rectangle.
Other border styles may be
defined in the future. Default value: S.
D array (Optional) A dash array defining a pattern of
dashes and gaps to be used in drawing a
dashed border (border style D above).
The dash array is specified in the same format
as in the line dash pattern parameter
of the graphics state (see “Line Dash Pattern” on
page 217). The dash phase is not
specified and is assumed to be 0. For example, a D
entry of [ 3 2 ] specifies a border
drawn with 3-point dashes alternating with 2-point
gaps. Default value: [ 3 ].
As you can see to be compatible with PDF Specifications, border width must be
editable (0, no border, is allowed and default is 1 point not 18 points).
Ciao...
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