[libadwaita/wip/exalm/accent: 12/16] stylesheet: Add and use gtkmix()

[Alexander Mikhaylenko <alexm src gnome org>]

commit 3c433bb7ff77e2a366b574b0825b39dabf53f432
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Sat Jun 12 02:32:00 2021 +0500

    stylesheet: Add and use gtkmix()

 src/stylesheet/_colors.scss    | 4 ++--
 src/stylesheet/_functions.scss | 5 +++++
 2 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/src/stylesheet/_colors.scss b/src/stylesheet/_colors.scss
index 10fd4578..399f2244 100644
--- a/src/stylesheet/_colors.scss
+++ b/src/stylesheet/_colors.scss
@@ -43,8 +43,8 @@ $button_checked_active_color: gtkalpha(currentColor, .35);
 
 $fill_color: $accent_color;
 $fill_text_color: $accent_text;
-$fill_hover_color: #{"mix(#{$accent_color}, currentColor, .1)"};
-$fill_active_color: #{"mix(#{$accent_color}, black, .2)"};
+$fill_hover_color: gtkmix($accent_color, currentColor, 90%);
+$fill_active_color: gtkmix($accent_color, black, 80%);
 
 $slider_color: mix(white, $base_color, 80%);
 $slider_hover_color: white;
diff --git a/src/stylesheet/_functions.scss b/src/stylesheet/_functions.scss
index 5ac80e3b..afc8b648 100644
--- a/src/stylesheet/_functions.scss
+++ b/src/stylesheet/_functions.scss
@@ -1,3 +1,8 @@
 @function gtkalpha($c,$a) {
   @return unquote("alpha(#{$c},#{$a})");
 }
+
+@function gtkmix($c1,$c2,$r) {
+  $ratio: 1 -  $r / 100%; // match SCSS mix()
+  @return unquote("mix(#{$c1},#{$c2},#{$ratio})");
+}