Initial remote commit

source/gtk4/_drawing.scss

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+// Drawing mixins
+
+// generic drawing of more complex things
+
+//
+// Helper mixin for drawing visible focus rings
+//
+// If $target is specified, the focus ring is applied to the specified child element.
+// If $outer is true, the focus ring extends outward. Otherwise, it extends inward.
+// If $within is true, use focus-within instead of focus:focus-visible
+//
+
+//to allow some common mixins to know whether they've been called for a gtk3 or gtk4 widget, because there are some things that are different.
+$gtk: 4;
+
+
+@mixin focus-ring($target: null, $width: 2px, $offset: -$width, $outer: false, $focus-state: 'focus:focus-visible', $fc: $focus_border_color) {
+  transition-property: outline, outline-width, outline-offset, outline-color;
+  transition-duration: 300ms;
+  animation-timing-function: ease-in-out;
+  & #{$target} {
+    outline: 0 solid transparent;
+    outline-offset: if($outer, $offset + 4px, $offset + $width + 4px);
+  }
+
+  &:#{$focus-state} #{$target} {
+    outline-color: $fc;
+    outline-width: $width;
+    outline-offset: $offset;
+  }
+}
+
+@mixin _shadows($list...) {
+//
+// Helper mixin to stack up to box-shadows;
+//
+  $shadows: null;
+
+  @each $shadow in $list {
+    @if $shadow!=none { $shadows: $shadows, $shadow; }
+  }
+
+  box-shadow: $shadows;
+}
+
+// entries
+
+@mixin entry($t, $fc:$focus_border_color) {
+//
+// Entries drawing function
+//
+// $t: entry type
+// $fc: focus color
+//
+// possible $t values:
+// normal, focus, insensitive, backdrop, backdrop-insensitive, osd, osd-focus, osd-backdrop, block_cursor;
+//
+  $_entry_shadow: 0 1px 2px transparentize($shadow_hard_color, 0.6);
+  $_hilight_color: _button_hilight_color($bg_color);
+  
+  @if $t==normal {
+    color: $text_color;
+    border-color: $borders_color;
+    background-color: $base_color;
+    @include _shadows(inset $_entry_shadow, 0 1px $_hilight_color);
+    // for the transition to work the number of shadows in different states needs to match, hence the transparent shadow here.
+  }
+  
+  
+  @if $t==insensitive {
+    color: $insensitive_fg_color;
+    border-color: $insensitive_fg_color;
+    background-color: $insensitive_bg_color;
+  }
+  @if $t==backdrop {
+    color: $backdrop_text_color;
+    border-color: $backdrop_borders_color;
+    background-color: $backdrop_base_color;
+  }
+  @if $t==backdrop-insensitive {
+    color: $backdrop_insensitive_color;
+    border-color: $backdrop_borders_color;
+    background-color: $insensitive_bg_color;
+  }
+  @if $t==osd {
+    color: $osd_text_color;
+    border-color: $osd_borders_color;
+    background-color: transparentize(opacify($osd_borders_color, 1), 0.5);
+    background-clip: padding-box;
+    @include _shadows(inset $_entry_shadow, 0 1px $_hilight_color);
+    -gtk-icon-shadow: 0 1px black;
+  }
+  @if $t==osd-focus {
+    color: $osd_text_color;
+    border-color: $selected_bg_color;
+    background-color: transparentize(opacify($osd_borders_color, 1), 0.5);
+    background-clip: padding-box;
+    @include _shadows(inset $_entry_shadow, 0 1px $_hilight_color);
+  }
+  @if $t==osd-insensitive {
+    color: $osd_insensitive_fg_color;
+    border-color: $osd_borders_color;
+    background-color: $osd_insensitive_bg_color;
+    background-clip: padding-box;
+  }
+  @if $t==osd-backdrop {
+    color: $osd_text_color;
+    border-color: $osd_borders_color;
+    background-color: transparentize(opacify($osd_borders_color, 1), 0.5);
+    background-clip: padding-box;
+  }
+  @if $t==block_cursor {
+    color: $base_color;
+    background-color: $text_color;
+  }
+}
+
+// buttons
+
+
+@import "../common/buttons.scss";
+
+
+
+@mixin headerbar_fill($c:$headerbar_bg_color, $ov: none) {
+//
+// headerbar fill
+//
+// $c:  base color
+// $ov: a background layer for background shorthand (hence no commas!)
+//
+  $gradient: linear-gradient(to top, darken($c, 2%), lighten($c, 1%));
+
+  @if $variant == 'dark' { $gradient: linear-gradient(to top, lighten($c, 4%), lighten($c, 6%)); }
+
+  @if $ov != none { background: $c $ov, $gradient; }
+  @else { background: $c $gradient; }
+
+}
+
+@mixin overshoot($p, $t:normal, $c:$fg_color) {
+//
+// overshoot
+//
+// $p: position
+// $t: type
+// $c: base color
+//
+// possible $p values:
+// top, bottom, right, left
+//
+// possible $t values:
+// normal, backdrop
+//
+
+  $_small_gradient_length: 3%;
+  $_big_gradient_length: 50%;
+
+  $_small_gradient_size: 100% $_small_gradient_length;
+  $_big_gradient_size: 100% $_big_gradient_length;
+
+  @if $p==right or $p==left {
+    $_small_gradient_size: $_small_gradient_length 100%;
+    $_big_gradient_size: $_big_gradient_length 100%;
+  }
+
+  $_small_gradient_color: $c;
+  $_big_gradient_color: transparentize($c, 0.93);
+
+  @if $c==$fg_color {
+    $_small_gradient_color: darken($borders_color, 10%);
+    $_big_gradient_color: transparentize($fg_color, 0.93);
+
+    @if $t==backdrop { $_small_gradient_color: $backdrop_borders_color; }
+  }
+
+  $_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;
+    background-size: $_small_gradient_size, $_big_gradient_size;
+  }
+
+  @else if $t==backdrop {
+    background-image: $_small_gradient;
+    background-size: $_small_gradient_size;
+  }
+
+  background-repeat: no-repeat;
+  background-position: $p;
+
+  background-color: transparent; // reset some properties to be sure to not inherit them somehow
+  border: none;                  //
+  box-shadow: none;              //
+}
+
+/***************************
+ * Check and Radio buttons *
+ ***************************/
+
+@import "../common/checkradios.scss";