// Drawing mixins

// generic drawing of more complex things

//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: 3;


@function _widget_edge($c:$borders_edge) {
// outer highlight "used" on most widgets
  @if $c == none { @return none; }
  @else { @return 0 1px $c; }
}

@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
@function entry_focus_border($fc:$selected_bg_color) {
  //@if $variant == 'light' { @return $fc; }
  //@else { @return if($fc==$selected_bg_color, $selected_borders_color, darken($fc, 35%)); }
  @return $fc;
}

@function entry_focus_shadow($fc:$selected_bg_color) { @return inset 0 0 0 1px $fc; }

@mixin entry($t, $fc:$selected_bg_color, $edge: none) {
//
// Entries drawing function
//
// $t: entry type
// $fc: focus color
// $edge: set to none to not draw the bottom edge or specify a color to not
//        use the default one
//
// possible $t values:
// normal, focus, insensitive, backdrop, backdrop-insensitive, osd, osd-focus, osd-backdrop;
//
  $_entry_shadow: 0 1px 2px transparentize($shadow_hard_color, 0.6);
  $_blank_edge: if($edge == none, none, 0 1px transparentize($edge, 1));
  $_entry_edge: if($edge == none, none, _widget_edge($edge));
  $_hilight_color: _button_hilight_color($bg_color);

  @if $t==normal {
    color: $text_color;
    border-color: black; //$text_color;//$borders_color;
    background-color: $base_color;
    @include _shadows(entry_focus_shadow(transparentize($fc, 1)),inset $_entry_shadow, 0 1px $_hilight_color, $_entry_edge);
    // for the transition to work the number of shadows in different states needs to match, hence the transparent shadow here.
  }
  @if $t==focus {
    @include _shadows(entry_focus_shadow($fc), inset $_entry_shadow, 0 1px $_hilight_color, $_entry_edge);
    border-color: entry_focus_border($fc);
  }
  @if $t==insensitive {
    color: $insensitive_fg_color;
    border-color: black; //$insensitive_fg_color;
    background-color: $insensitive_bg_color;
    box-shadow: $_entry_edge;
  }
  @if $t==backdrop {
    color: $backdrop_text_color;
    border-color: black; //$backdrop_borders_color;
    background-color: $backdrop_base_color;
    box-shadow: $_blank_edge;
  }
  @if $t==backdrop-insensitive {
    color: $backdrop_insensitive_color;
    border-color: black; //$backdrop_borders_color;
    background-color: $insensitive_bg_color;
    box-shadow: $_blank_edge;
  }
  @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($_entry_shadow);;
    text-shadow: 0 1px black;
    -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(entry_focus_shadow($fc), $_entry_shadow);
    text-shadow: 0 1px black;
    -gtk-icon-shadow: 0 1px black;
  }
  @if $t==osd-insensitive {
    color: $osd_insensitive_fg_color;
    border-color: $osd_borders_color;
    background-color: $osd_insensitive_bg_color;
    background-clip: padding-box;
    box-shadow: none;
    text-shadow: none;
    -gtk-icon-shadow: none;
  }
  @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;
    box-shadow: none;
    text-shadow: none;
    -gtk-icon-shadow: none;
  }
}

// buttons



@import "../common/buttons.scss";


@mixin headerbar_fill($c:$headerbar_color, $hc:$top_hilight, $ov: none) {
//
// headerbar fill
//
// $c:  base color
// $hc: top highlight 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; }

  box-shadow: inset 0 1px $hc; // top highlight
}


@import '../common/overshoot.scss';


/***************************
 * Check and Radio buttons *
 ***************************/
 
@import "../common/checkradios.scss";