Gtk-4: Fix theme parsing erros and warnings

gtk-4.0/_common.scss

@@ -13,24 +13,6 @@ $button_transition: all 200ms $ease-out-quad;
 
 * {
   padding: 0;
-  -GtkToolButton-icon-spacing: 4;
-  -GtkTextView-error-underline-color: $error_color;
-
-  // The size for scrollbars. The slider is 2px smaller, but we keep it
-  // up so that the whole area is sensitive to button presses for the
-  // slider. The stepper button is larger in both directions, the slider
-  // only in the width
-
-  -GtkScrolledWindow-scrollbar-spacing: 0;
-
-  -GtkToolItemGroup-expander-size: 11;
-
-  -GtkWidget-text-handle-width: 20;
-  -GtkWidget-text-handle-height: 24;
-
-  -GtkDialog-button-spacing: 4;
-  -GtkDialog-action-area-border: 0;
-
   // We use the outline properties to signal the focus properties
   // to the adwaita engine: using real CSS properties is faster,
   // and we don't use any outlines for now.
@@ -39,7 +21,6 @@ $button_transition: all 200ms $ease-out-quad;
   outline-style: dashed;
   outline-offset: -3px;
   outline-width: 0px;
-  -gtk-outline-radius: 2px;
 
   -gtk-secondary-caret-color: $selected_bg_color;
-}
+}

gtk-4.0/_drawing.scss

@@ -521,17 +521,13 @@
     @if $t==backdrop { $_small_gradient_color: $backdrop_borders_color; }
   }
 
-  $_small_gradient: -gtk-gradient(radial,
-                                  $_position, 0,
-                                  $_position, 0.5,
-                                  to($_small_gradient_color),
-                                  to(transparentize($_small_gradient_color, 1)));
-
-  $_big_gradient: -gtk-gradient(radial,
-                                $_position, 0,
-                                $_position, 0.6,
-                                from(transparentize($_big_gradient_color, 0.87)),
-                                to(transparentize($_big_gradient_color, 1)));
+  $_small_gradient: radial-gradient(farthest-side at $p,
+                                    $_small_gradient_color 85%,
+                                    transparentize($_small_gradient_color, 1));
+
+$_big_gradient: radial-gradient(farthest-side at $p,
+                                $_big_gradient_color,
+                                transparentize($_big_gradient_color, 1));
 
   @if $t==normal {
     background-image: $_small_gradient, $_big_gradient;

gtk-4.0/apps/_budgie.scss

@@ -103,7 +103,7 @@ $pos_list: ((top, bottom),(bottom,top),(left,right),(right,left));
     color: $panel_color;
     .container { padding: 0; }
 
-    button:hover { -gtk-icon-effect: none; }
+    button:hover { -gtk-icon-filter: none; }
 
     entry.search {
         border: none;
@@ -350,17 +350,17 @@ button.raven-trigger {
     .view-header {
         font-size: 14px;
         padding: 10px;
-        border-bottom: #{"1px solid mix(@theme_base_color, #000000, 0.35);"};
-        box-shadow: #{"0px 1px 1px alpha(@theme_fg_color, 0.04);"};
+        border-bottom: #{"1px solid mix(@theme_base_color, #000000, 0.35)"};
+        box-shadow: #{"0px 1px 1px alpha(@theme_fg_color, 0.04)"};
     }
 
     .display-settings-button {
         border-top-left-radius: 0px;
         border-top-right-radius: 0px;
         border: none;
         padding: 3px;
-        border-top: #{"1px solid mix(@theme_base_color, #000000, 0.35);"};
-        box-shadow: #{"inset 0px 1px 1px alpha(@theme_fg_color, 0.04);"};
+        border-top: #{"1px solid mix(@theme_base_color, #000000, 0.35)"};
+        box-shadow: #{"inset 0px 1px 1px alpha(@theme_fg_color, 0.04)"};
     }
 }
 

gtk-4.0/apps/_geary.scss

@@ -11,7 +11,6 @@
 }
 
 ConversationListView {
-  -GtkTreeView-grid-line-width: 0;
 
   .view {
     &:active,

gtk-4.0/apps/_gnome.scss

@@ -72,7 +72,6 @@
 
 .nautilus-circular-button {
   border-radius: 20px;
-  -gtk-outline-radius: 20px;
 }
 
 .disk-space-display {

gtk-4.0/apps/_nemo.scss

@@ -1,8 +1,5 @@
 .nemo-window {
     .places-treeview {
-        -NemoPlacesTreeView-disk-full-bg-color: lighten($_sidebar_color, 15%);
-        -NemoPlacesTreeView-disk-full-fg-color: $yellow;
-        -GtkTreeView-vertical-separator: 10; 
         .view.cell,
         iconview.cell {
             &:hover { background: transparentize(darken($_sidebar_color, 3%), 0.3); }

gtk-4.0/apps/_unity.scss

@@ -9,26 +9,6 @@ $unity_panel_color: darken($unity_color, 10%); /* Unity panel color #454D50 */
 
 UnityDecoration {
 
-  /* Border properties (top, right, bottom, left) */
-  -UnityDecoration-extents: 28px 1px 1px 1px;/* the size of the decorations  */
-  -UnityDecoration-input-extents: 10px;/* the extra size of the input areas */
-
-  /* Shadows settings */
-  -UnityDecoration-shadow-offset-x: 1px;/* Size property, the shadow x offset */
-  -UnityDecoration-shadow-offset-y: 1px;/* Size property, the shadow y offset */
-  -UnityDecoration-active-shadow-color: rgba (0, 0, 0, 0.647);/* Color property, active window shadow color */
-  -UnityDecoration-active-shadow-radius: 8px;/* Size property, active window shadow radius */
-  -UnityDecoration-inactive-shadow-color: rgba (0, 0, 0, 0.647);/* Color property, inactive windows shadow color */
-  -UnityDecoration-inactive-shadow-radius: 5px;/* Size property, inactive windows shadow radius */
-
-  /* Glow applied to the selected scaled window */
-  -UnityDecoration-glow-size: 8px;/* Size property, size of glow */
-  -UnityDecoration-glow-color: $selected_bg_color;/* Color property of the glow */
-
-  /* Title settings */
-  -UnityDecoration-title-indent: 10px;/* Size property, left indent of the title */
-  -UnityDecoration-title-fade: 35px;/* Size property, space of the title that can be faded */
-  -UnityDecoration-title-alignment: 0.0;/* Float from 0.0 to 1.0, to align the title */
   background-color: $unity_color;
   color: $unity_text_color;