paper-gtk-theme/Paper/gtk-3.0/widgets/_entries.scss

/****************
 * Text Entries *
 ****************/

%entry,
.entry,
entry {
  %entry_basic, & {
    min-height: 24px;
    padding: 6px;
    border: 1px solid;
    border-radius: 3px;
    transition: all 200ms $ease-out-quad;

    @include entry(normal);

    GtkImage,
    image { // icons inside the entry
      &.left { padding-left: 0; padding-right: 6px; }
      &.right { padding-left: 6px; padding-right: 0; }
    }

    undershoot {
      &.left { @include undershoot(left); }
      &.right { @include undershoot(right); }
    }

    &.flat {
      &:focus, & {
        min-height: 0;
        padding: 2px;
        background-image: none;
        border-color: transparent;
        border-radius: 0;
      }
    }

    &:focus { @include entry(focus); }

    &:insensitive { @include entry(insensitive); }
    &:disabled { @include entry(insensitive); }

    &:backdrop {
      @include entry(backdrop);

      transition: $backdrop_transition;
    }

    &:backdrop:insensitive { @include entry(backdrop-insensitive); }
    &:backdrop:disabled { @include entry(backdrop-insensitive); }

    &:selected { &:focus, & { @extend %selected_items; }}
    selection { &:focus, & { @extend %selected_items; }}

    // entry error and warning style
    @each $e_type, $e_color in (error, $error_color),
                               (warning, $warning_color) {
      &.#{$e_type} {
        color: $e_color;
        border-color: entry_focus_border($e_color);

        &:focus { @include entry(focus, $e_color); }

        &:selected { &:focus, & { background-color: $e_color; }}
      }
    }

    GtkImage,
    image { // entry icons colors
      color: mix($fg_color, $base_color, 80%);

      &:hover { color: $fg_color; }

      &:active { color: $selected_bg_color; }

      &:backdrop { color: mix($backdrop_fg_color, $backdrop_base_color, 80%); }
    }

    &:drop(active) {
      &:focus, & {
        border-color: $drop_target_color;
        box-shadow: inset 0 0 0 1px $drop_target_color;
      }
    }

    .osd & {
      @include entry(osd);

      &:focus { @include entry(osd-focus); }

      &:backdrop { @include entry(osd-backdrop); }

      &:disabled { @include entry(osd-insensitive); }
    }
  }

  .progressbar,
  progress {
    margin: 2px -6px;
    background-color: transparent;
    background-image: none;
    border-radius: 0;
    border-width: 0 0 2px;
    border-color: $selected_bg_color;
    border-style: solid;
    box-shadow: none;

    &:backdrop { background-color: transparent; }
  }

   // linked entries
  .linked:not(.vertical) > & { @extend %linked; }
  .linked:not(.vertical) > &:focus + &,
  .linked:not(.vertical) > &:focus + button,
  .linked:not(.vertical) > &:focus + combobox > box > button.combo { border-left-color: entry_focus_border(); }

  .linked:not(.vertical) > &:drop(active) + &,
  .linked:not(.vertical) > &:drop(active) + button,
  .linked:not(.vertical) > &:drop(active) + combobox > box > button.combo { border-left-color: $drop_target_color; }

  // Vertically linked entries
  // FIXME: take care of "colored" entries
  .linked.vertical > & {
    @extend %linked_vertical;

    // brighter border between linked entries
    &:not(:disabled) + entry:not(:disabled),
    &:not(:disabled) + %entry:not(:disabled) {
      border-top-color: mix($borders_color, $base_color, 30%);
      background-image: linear-gradient(to bottom, $base_color);

      &:backdrop {
        border-top-color: mix($backdrop_borders_color, $backdrop_base_color, 30%);
        background-image: linear-gradient(to bottom, $backdrop_base_color);
      }
    }

    // brighter border between linked insensitive entries
    &:insensitive + %entry:insensitive,
    &:disabled + entry:disabled,
    &:insensitive + %entry:insensitive,
    &:disabled + entry:disabled { border-top-color: mix($borders_color, $base_color, 30%); }

    // color back the top border of a linked focused entry following another entry and add back the focus shadow.
    // :not(:only-child) is a specificity bump hack.
    + %entry:focus:not(:only-child),
    + entry:focus:not(:only-child) { border-top-color: entry_focus_border(); }

    + %entry:drop(active):not(:only-child),
    + entry:drop(active):not(:only-child) { border-top-color: $drop_target_color; }

    // this takes care of coloring the top border of the focused entry subsequent widget.
    // :not(:only-child) is a specificity bump hack.
    &:focus:not(:only-child) {
      + %entry,
      + entry,
      + .entry,
      + button,
      + .button,
      + combobox > box > button.combo { border-top-color: entry_focus_border(); }
    }

    &:drop(active):not(:only-child) {
      + %entry,
      + entry,
      + .entry,
      + button,
      + .button,
      + combobox > box > button.combo { border-top-color: $drop_target_color; }
    }
  }
}

GtkTreeView .acceleditor > label,
treeview acceleditor > label {
    background-color: $selected_bg_color;
}

GtkTreeView .entry,
treeview entry {
  &.flat, & {
    border-radius: 0;
    background-image: none;
    background-color: $base_color;

    &:focus { border-color: $selected_bg_color; }
  }
}