[libadwaita/wip/exalm/background-colors2: 11/18] stylesheet: Reorganize tab border color

[Alexander Mikhaylenko <alexm src gnome org>]

commit aeb8c4bef5968b5d5439837694921f5f3c98e8a8
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Fri Oct 1 17:08:52 2021 +0500

    stylesheet: Reorganize tab border color

 src/stylesheet/_colors.scss             |  6 +++---
 src/stylesheet/widgets/_header-bar.scss |  8 +++-----
 src/stylesheet/widgets/_tab-view.scss   | 13 ++++++-------
 3 files changed, 12 insertions(+), 15 deletions(-)
---
diff --git a/src/stylesheet/_colors.scss b/src/stylesheet/_colors.scss
index 142b37b5..1ed7c7a8 100644
--- a/src/stylesheet/_colors.scss
+++ b/src/stylesheet/_colors.scss
@@ -23,14 +23,15 @@ $text_color: if($variant == 'light', black, white);
 $bg_color: if($variant == 'light', $light_bg, $dark_bg);
 $fg_color: if($variant == 'light', $light_fg, $dark_fg);
 
-$borders_color: gtkalpha(currentColor, .15);
+$border_opacity: if($contrast == 'high', .5, .15);
+$borders_color: gtkalpha(currentColor, $border_opacity);
 $thin_borders_color: gtkalpha(currentColor, .05);
 $link_color: $accent_color;
 $link_visited_color: gtkmix($accent_color, $text_color, 80%);
 $dark_fill: if($variant == 'light', darken($bg_color, 9%), darken($bg_color, 5%));
 $headerbar_bg_color: darken($bg_color, if($variant == 'dark', 5%, 10%));
 $headerbar_fg_color: $fg_color;
-$headerbar_border_color: $fg_color;
+$headerbar_border_color: gtkalpha($fg_color, $border_opacity);
 $headerbar_backdrop_color: $bg_color;
 
 $popover_bg_color: $base_color;
@@ -73,7 +74,6 @@ $dim_label_opacity: 0.55;
 
   $fg_color: if($variant == 'light', darken($fg_color, 3%), lighten($fg_color, 2%));
   $bg_color: if($variant == 'light', lighten($bg_color, 3%), darken($bg_color, 2%));
-  $borders_color: gtkalpha(currentColor, .5);
   $thin_borders_color: gtkalpha(currentColor, .25);
 
   //focus rings
diff --git a/src/stylesheet/widgets/_header-bar.scss b/src/stylesheet/widgets/_header-bar.scss
index dcdc38cc..0c692299 100644
--- a/src/stylesheet/widgets/_header-bar.scss
+++ b/src/stylesheet/widgets/_header-bar.scss
@@ -1,12 +1,10 @@
-$headerbar_border_opacity: if($contrast == 'high', .5, .15);
-
 headerbar {
   min-height: 47px;
   background-color: $headerbar_bg_color;
   color: $headerbar_fg_color;
-  box-shadow: inset 0 -1px gtkalpha($headerbar_border_color, $headerbar_border_opacity),
-              inset  1px 0 gtkalpha($headerbar_border_color, $headerbar_border_opacity),
-              inset -1px 0 gtkalpha($headerbar_border_color, $headerbar_border_opacity);
+  box-shadow: inset 0 -1px $headerbar_border_color,
+              inset  1px 0 $headerbar_border_color,
+              inset -1px 0 $headerbar_border_color;
 
   margin-left: -1px;
   margin-right: -1px;
diff --git a/src/stylesheet/widgets/_tab-view.scss b/src/stylesheet/widgets/_tab-view.scss
index e7fb32a4..7971365b 100644
--- a/src/stylesheet/widgets/_tab-view.scss
+++ b/src/stylesheet/widgets/_tab-view.scss
@@ -1,5 +1,4 @@
 $tab_bg: $headerbar_bg_color;
-$tab_border: gtkalpha($headerbar_border_color, $headerbar_border_opacity);
 
 @mixin undershoot-gradient($dir) {
   @if $variant == 'dark' {
@@ -26,12 +25,12 @@ tabbar {
     min-height: 38px;
     background: $headerbar_bg_color;
     color: $headerbar_fg_color;
-    border-bottom: 1px solid $tab_border;
+    border-bottom: 1px solid $headerbar_border_color;
   }
 
   scrolledwindow.pinned {
     undershoot {
-      border: 0 solid $tab_border;
+      border: 0 solid $headerbar_border_color;
     }
 
     &:dir(rtl) undershoot.left {
@@ -44,11 +43,11 @@ tabbar {
 
     tabbox > background {
       &:dir(ltr) {
-        box-shadow: inset -1px 0 $tab_border;
+        box-shadow: inset -1px 0 $headerbar_border_color;
       }
 
       &:dir(rtl) {
-        box-shadow: inset 1px 0 $tab_border;
+        box-shadow: inset 1px 0 $headerbar_border_color;
       }
     }
   }
@@ -79,7 +78,7 @@ tabbar {
 
   tab {
     border-style: solid;
-    border-color: $tab_border;
+    border-color: $headerbar_border_color;
     border-width: 0 1px 0 1px;
     transition: background 150ms ease-in-out, $focus_transition;
     background-color: $tab_bg;
@@ -104,7 +103,7 @@ tabbar {
   .end-action {
     background-color: $tab_bg;
     background-clip: padding-box;
-    border-color: $tab_border;
+    border-color: $headerbar_border_color;
     border-style: solid;
     transition: background 150ms ease-in-out;