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| author | Daniel Boles <dboles@src.gnome.org> | 2017-03-17 23:55:15 +0000 |
|---|---|---|
| committer | Daniel Boles <dboles@src.gnome.org> | 2017-03-17 23:56:25 +0000 |
| commit | e5ae946be36589e7b946f3a87f8e41127caa872e (patch) | |
| tree | c436cea5ec93e50740e1e0b1c6739814860d8587 /docs | |
| parent | a69083c95efd88ce2796671d983c0fc35891fde5 (diff) | |
| download | gtk+-e5ae946be36589e7b946f3a87f8e41127caa872e.tar.gz | |
css-overview: Elaborate how color expressions work
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/reference/gtk/css-overview.xml | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/docs/reference/gtk/css-overview.xml b/docs/reference/gtk/css-overview.xml index d5e6cf2cf3..3a7925e2b5 100644 --- a/docs/reference/gtk/css-overview.xml +++ b/docs/reference/gtk/css-overview.xml @@ -582,9 +582,14 @@ background-color: @bg_color; </example> <para> - GTK+ also allows to form color expressions, which can be nested and - provide a rich language to define colors which are derived from a - set of base colors. + GTK+ also supports color expressions, which allow colors to be transformed + to new ones and can be nested, providing a rich language to define colors. + </para> + <para> + Color expressions resemble functions, taking 1 or more colors and in some + cases a number as their arguments. The number is floating-point, clamped + between 0 and 1, and specifies the degree to which the expression will + transform the given color(s) in the manner that is indicated by its name. </para> <literallayout><code>〈color expression〉 = lighter(〈color〉) | darker(〈color〉) | shade(〈color〉,〈number〉) | alpha(〈color〉,〈number〉) | mix(〈color〉,〈color〉,〈number〉)</code> |