cairoSetDash {RGtk2} | R Documentation |
Sets the dash pattern to be used by cairoStroke
. A dash pattern
is specified by dashes
, a list of positive values. Each value
provides the user-space length of altenate "on" and "off" portions
of the stroke. The offset
specifies an offset into the pattern at
which the stroke begins.
cairoSetDash(cr, dashes, offset)
|
[Cairo ] a cairo context |
|
[numeric] a list specifying alternate lengths of on and off po |
|
[numeric] an offset into the dash pattern at which the stroke should start |
If num.dashes
is 0 dashing is disabled.
If num.dashes
is 1 a symmetric pattern is assumed with alternating
on and off portions of the size specified by the single value in
dashes
.
If any value in dashes
is negative, or if all values are 0, then
cairo.t
will be put into an error state with a status of
CAIRO_STATUS_INVALID_DASH
.
Derived by RGtkGen from GTK+ documentation