[Webkit-unassigned] [Bug 146997] [Cairo] SVG path not rendered with all-zero dasharray

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=146997

--- Comment #11 from Jinyoung Hur <hur.ims at navercorp.com> ---
(In reply to comment #8)
> Comment on attachment 257263 [details]
> Patch
> 
> Can the DashArray be empty?

Yes. According to the comment in cairo.c, num_dashes=0 disables dashing.

/**
 * cairo_set_dash:
 * @cr: a cairo context
 * @dashes: an array specifying alternate lengths of on and off stroke portions
 * @num_dashes: the length of the dashes array
 * @offset: an offset into the dash pattern at which the stroke should start
 *
 * Sets the dash pattern to be used by cairo_stroke(). A dash pattern
 * is specified by @dashes, an array of positive values. Each value
 * provides the length of alternate "on" and "off" portions of the
 * stroke. The @offset specifies an offset into the pattern at which
 * the stroke begins.
 *
 * Each "on" segment will have caps applied as if the segment were a
 * separate sub-path. In particular, it is valid to use an "on" length
 * of 0.0 with %CAIRO_LINE_CAP_ROUND or %CAIRO_LINE_CAP_SQUARE in order
 * to distributed dots or squares along a path.
 *
 * Note: The length values are in user-space units as evaluated at the
 * time of stroking. This is not necessarily the same as the user
 * space at the time of cairo_set_dash().
 *
 * 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
 * @cr will be put into an error state with a status of
 * %CAIRO_STATUS_INVALID_DASH.
 *
 * Since: 1.0
 **/

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