making inset shadows work on avatars again

src/components/notifications/notifications.scss

@@ -56,8 +56,8 @@
     line-height: 0;
 
     &.better-shadow {
-      box-shadow: none;
-      filter: drop-shadow(var(--avatarStatusShadowFilter))
+      box-shadow: var(--avatarStatusShadowInset);
+      filter: var(--avatarStatusShadowFilter)
     }
 
     &.animated::before {

src/components/status/status.vue

@@ -469,8 +469,8 @@
   border-radius: var(--avatarAltRadius, $fallback--avatarAltRadius);
 
   &.better-shadow {
-    box-shadow: none;
-    filter: drop-shadow(var(--avatarStatusShadowFilter))
+    box-shadow: var(--avatarStatusShadowInset);
+    filter: var(--avatarStatusShadowFilter)
   }
 }
 
@@ -484,8 +484,8 @@
   position: relative;
 
   &.better-shadow {
-    box-shadow: none;
-    filter: drop-shadow(var(--avatarStatusShadowFilter))
+    box-shadow: var(--avatarStatusShadowInset);
+    filter: var(--avatarStatusShadowFilter)
   }
 
   img {

src/components/style_switcher/style_switcher.vue

@@ -282,12 +282,15 @@
           <i18n path="settings.style.shadows.filter_hint.always_drop_shadow" tag="p">
             <code>filter: drop-shadow()</code>
           </i18n>
-          <i18n path="settings.style.shadows.filter_hint.text" tag="p">
+          <p>{{$t('settings.style.shadows.filter_hint.avatar_inset')}}</p>
+          <i18n path="settings.style.shadows.filter_hint.drop_shadow_syntax" tag="p">
             <code>drop-shadow</code>
             <code>spread-radius</code>
             <code>inset</code>
           </i18n>
-          <p>{{$t('settings.style.shadows.filter_hint.inset_ignored')}}</p>
+          <i18n path="settings.style.shadows.filter_hint.inset_classic" tag="p">
+            <code>box-shadow</code>
+          </i18n>
           <p>{{$t('settings.style.shadows.filter_hint.spread_zero')}}</p>
         </div>
       </div>

src/components/user_card_content/user_card_content.vue

@@ -160,8 +160,8 @@
       object-fit: cover;
 
       &.better-shadow {
-        box-shadow: none;
-        filter: drop-shadow(var(--avatarStatusShadowFilter))
+        box-shadow: var(--avatarShadowInset);
+        filter: var(--avatarShadowFilter)
       }
 
       &.animated::before {

src/i18n/en.json

@@ -238,10 +238,10 @@
         "hint": "For shadows you can also use --variable as a color value to use CSS3 variables. Please note that setting opacity won't work in this case.",
         "filter_hint": {
           "always_drop_shadow": "Warning, this shadow always uses {0} when browser supports it.",
-          "text": "Please note that {0} does not support {1} parameter and {2} keyword.",
+          "drop_shadow_syntax": "{0} does not support {1} parameter and {2} keyword.",
+          "avatar_inset": "Please note that combining both inset and non-inset shadows on avatars might give unexpected results with transparent avatars.",
           "spread_zero": "Shadows with spread > 0 will appear as if it was set to zero",
-          "inset_ignored": "Inset shadows using will be ignored",
-          "inset_substituted": "Inset shadows will be substituted with {1} equivalent"
+          "inset_classic": "Inset shadows will be using {0}"
         },
         "components": {
           "panel": "Panel",

src/services/style_setter/style_setter.js

@@ -94,20 +94,22 @@ const setColors = (input, commit) => {
   commit('setOption', { name: 'colors', value: theme.colors })
 }
 
-const getCssShadow = (input) => {
+const getCssShadow = (input, usesDropShadow) => {
   if (input.length === 0) {
     return 'none'
   }
 
-  return input.map((shad) => [
-    shad.x,
-    shad.y,
-    shad.blur,
-    shad.spread
-  ].map(_ => _ + 'px').concat([
-    getCssColor(shad.color, shad.alpha),
-    shad.inset ? 'inset' : ''
-  ]).join(' ')).join(', ')
+  return input
+    .filter(_ => usesDropShadow ? _.inset : _)
+    .map((shad) => [
+      shad.x,
+      shad.y,
+      shad.blur,
+      shad.spread
+    ].map(_ => _ + 'px').concat([
+      getCssColor(shad.color, shad.alpha),
+      shad.inset ? 'inset' : ''
+    ]).join(' ')).join(', ')
 }
 
 const getCssShadowFilter = (input) => {
@@ -125,7 +127,9 @@ const getCssShadowFilter = (input) => {
       shad.blur / 2
     ].map(_ => _ + 'px').concat([
       getCssColor(shad.color, shad.alpha)
-    ]).join(' ')).join(', ')
+    ]).join(' '))
+    .map(_ => `drop-shadow(${_})`)
+    .join(' ')
 }
 
 const getCssColor = (input, a) => {
@@ -406,7 +410,11 @@ const generateShadows = (input) => {
         .entries(shadows)
       // TODO for v2.1: if shadow doesn't have non-inset shadows with spread > 0 - optionally
       // convert all non-inset shadows into filter: drop-shadow() to boost performance
-        .map(([k, v]) => `--${k}Shadow: ${getCssShadow(v)}; --${k}ShadowFilter: ${getCssShadowFilter(v)}`)
+        .map(([k, v]) => [
+          `--${k}Shadow: ${getCssShadow(v)}`,
+          `--${k}ShadowFilter: ${getCssShadowFilter(v)}`,
+          `--${k}ShadowInset: ${getCssShadow(v, true)}`
+        ].join(';'))
         .join(';')
     },
     theme: {