MapCSS: Add option to include colour preferences of external styles

[skyper]

It is possible to nicely define the colours of the internal style under preferences.

What I ask for is an option to also include external styles under the color tab within display preferences.

[AlfonZ]

Colours specified in external xml-based styles are showing up in Display preferences.
Adding the style

<?xml version="1.0" encoding="UTF-8"?>
<rules description="Xml test style" shortdescription="XmlTestStyle">
    <rule>
        <condition k="test" v="foo"/>
        <line width="10" colour="testcolour1#88DD22"/>
    </rule>
</rules>

adds the colour testcolour1.

Looking at ​MapCSS specification, I don't see a way to add a custom name for a hex value.

color: blue
color: #0000FF
color: rgb(0.0, 0.0, 1.0)

[skyper]

Replying to AlfonZ:

Colours specified in external xml-based styles are showing up in Display preferences.

Does this also work with wiki:Styles/Lane_and_Road_Attributes for example ?

[imagic]

Replying to skyper:

Replying to AlfonZ:

Colours specified in external xml-based styles are showing up in Display preferences.

Does this also work with wiki:Styles/Lane_and_Road_Attributes for example ?

This style is based on MapCSS and not on XML, therefore this can't work.

But I certainly do miss the possibility to make some properties configurable in MapCSS. If you have a look at the beginning of the style, you'll see a section called "Global settings and initialization" with various settings. Especially the opacity settings and the setting for left-hand/right-hand traffic have to be easy configurable. Currently the user has to save a copy of the style and edit it manually.

I suggest using comments to make MapCSS properties configurable, e.g. something like this:
boolean someProperty=false; /* configurable: name="Name of property", description="Description of property", values="true","false" */
The comment has to start right after the property in the same line.

[simon04]

In 6740/josm:

fix #9191 - MapCSS: Add option to include colour preferences of external styles

The syntax is the same as for the XML styles: name#123456

[imagic]

Actually how can I use this now in a MapCSS style? Any examples?

[simon04]

*[foo=bar] {
  color: supercolor#123456; /* supercolor is the preference name */
}

[imagic]

Is there any way to specify a color including opacity? If I use color: name#123456; it shows in the preferences. If I try instead color: name#12345678; it doesnt.

I want to make the opacity of some elements configurable.

[simon04]

Please do not silently use a closed ticket of a reached milestone. I created #9633.