display:none preprocessor

[nvkelso]

For situations where there is CSS for a class, but the end result is NULL in terms of drawing anything (like line-opacity: 0; where there is no other symbology applied), the data layer should be turned off and the CSS skipped.

[rcoup]

so special-case 0 for width and opacity and shortcut the symbolizer creation? Any others that spring to mind?

[nvkelso]

Seems like it should apply to all:

stroke-opacity
polygon-opacity
line-width
outline-width
inline-width
outline-opacity
inline-opacity
point-width
point-height
line-pattern-width
line-pattern-height
shield-size

On Mon, Oct 31, 2011 at 17:22, Robert Coup <
[email protected]>wrote:

so special-case 0 for width and opacity and shortcut the symbolizer
creation? Any others that spring to mind?

Reply to this email directly or view it on GitHub:
#19 (comment)

[migurski]

I've gotten display: none working, here's the test on the branch: https://github.com/mapnik/Cascadenik/blob/16afc57c/cascadenik/tests.py#L2065

The opposite of display: none is display: map, and it’s implied for all elements.

I can likely make lines of zero width and so one work as described above too.

[nvkelso]

Awesome!

_n

On Fri, May 4, 2012 at 5:10 PM, migurski <
[email protected]

wrote:

I've gotten display: none working, here's the test on the branch:
https://github.com/mapnik/Cascadenik/blob/16afc57c/cascadenik/tests.py#L2065

The opposite of display: none is display: map, and it’s implied for
all elements.

I can likely make lines of zero width and so one work as described above
too.

---

Reply to this email directly or view it on GitHub:
#19 (comment)

[nvkelso]

Is this closed now?

[migurski]

The special-case 0 is still open.