[libadwaita/wip/exalm/buttons-5: 7/18] stylesheet: Transparentize disabled buttons

[Alexander Mikhaylenko <alexm src gnome org>]

commit 631299639716d65ac0a305ad060fad829854f80f
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Thu Jun 10 22:27:16 2021 +0500

    stylesheet: Transparentize disabled buttons

 src/stylesheet/_drawing.scss         | 35 -----------------------------------
 src/stylesheet/widgets/_buttons.scss | 36 ++++--------------------------------
 2 files changed, 4 insertions(+), 67 deletions(-)
---
diff --git a/src/stylesheet/_drawing.scss b/src/stylesheet/_drawing.scss
index 7018cdc1..204ce6dd 100644
--- a/src/stylesheet/_drawing.scss
+++ b/src/stylesheet/_drawing.scss
@@ -167,30 +167,6 @@ $_default_button_c: lighten($bg_color,2%);
     box-shadow: none;
   }
 
-  @else if $t==insensitive {
-  //
-  // insensitive button
-  //
-    $_bg: if($c != $_default_button_c, mix($c, $base_color, 85%), $insensitive_bg_color);
-
-    color: if($tc != $fg_color, mix($tc, $_bg, 50%), $insensitive_fg_color);
-    border-color: if($c != $_default_button_c, _border_color($c), $insensitive_borders_color);
-    background-image: image($_bg);
-  }
-
-  @else if $t==insensitive-active {
-  //
-  // insensitive pushed button
-  //
-    $_bg: if($variant == 'light', darken(mix($c, $base_color, 85%), 8%), darken(mix($c, $base_color, 85%), 
6%));
-    $_bc: if($c != $_default_button_c, _border_color($c), $insensitive_borders_color);
-
-    color: if($c != $_default_button_c, mix($tc, $_bg, 60%), $insensitive_fg_color);
-    border-color: $_bc;
-    background-image: image($_bg);
-    box-shadow: none;
-  }
-
   @else if $t==osd {
   //
   // normal osd button
@@ -232,17 +208,6 @@ $_default_button_c: lighten($bg_color,2%);
     box-shadow: none;
   }
 
-  @else if $t==osd-insensitive {
-  //
-  // insensitive osd button
-  //
-    color: $osd_insensitive_fg_color;
-    border-color: $osd_borders_color;
-    background-color: transparent;
-    background-image: image($osd_insensitive_bg_color);
-    background-clip: padding-box;
-  }
-
   @else if $t==undecorated {
   //
   // reset
diff --git a/src/stylesheet/widgets/_buttons.scss b/src/stylesheet/widgets/_buttons.scss
index 9f73c252..99ee151b 100644
--- a/src/stylesheet/widgets/_buttons.scss
+++ b/src/stylesheet/widgets/_buttons.scss
@@ -36,10 +36,11 @@ button {
     &:checked:active { @include button(checked-active); }
 
     &:disabled {
-      @include button(insensitive);
+      filter: opacity(.5);
 
-      &:active,
-      &:checked { @include button(insensitive-active); }
+      label {
+        filter: none;
+      }
     }
 
     @at-root %button_basic_flat,
@@ -73,8 +74,6 @@ button {
           }
         }
       }
-
-      &:disabled { @include button(undecorated); }
     }
 
     &.image-button {
@@ -154,8 +153,6 @@ button {
     &:active,
     &:checked { @include button(osd-active); }
 
-    &:disabled { @include button(osd-insensitive); }
-
     &.flat {
       @include button(undecorated);
 
@@ -163,13 +160,6 @@ button {
 
       &:hover { @include button(osd-hover); }
 
-      &:disabled {
-        @include button(osd-insensitive);
-        background-image: none;
-        border-color: transparent;
-        box-shadow: none;
-      }
-
       &:active,
       &:checked { @include button(osd-active); }
     }
@@ -193,21 +183,6 @@ button {
       &:active,
       &:checked { @include button(active, $b_color, white); }
 
-      &.flat {
-        &:disabled {
-          @include button(undecorated);
-
-          color: transparentize($b_color, 0.2);
-        }
-      }
-
-      &:disabled {
-        @include button(insensitive);
-
-        &:active,
-        &:checked { @include button(insensitive-active, $b_color, white); }
-      }
-
       .osd & {
         @include button(osd, $b_color);
 
@@ -215,8 +190,6 @@ button {
 
         &:active,
         &:checked { @include button(osd-active, $b_color); }
-
-        &:disabled { @include button(osd-insensitive, $b_color); }
       }
     }
   }
@@ -303,7 +276,6 @@ button.color {
 
   @if $variant == 'light' {
     .osd &, & {
-      &:disabled,
       &:active,
       &:checked { colorswatch:only-child { box-shadow: none; }}
     }