{
  // Default options
  'functions': true,
  'variableNameTransforms': ['dasherize']
}

{{#extend "less"}}
{{#content "sprites" mode="append"}}
{{#each retina_sprites}}
@{{strings.name_name}}: '{{name}}';
@{{strings.name_x}}: {{px.x}};
@{{strings.name_y}}: {{px.y}};
@{{strings.name_offset_x}}: {{px.offset_x}};
@{{strings.name_offset_y}}: {{px.offset_y}};
@{{strings.name_width}}: {{px.width}};
@{{strings.name_height}}: {{px.height}};
@{{strings.name_total_width}}: {{px.total_width}};
@{{strings.name_total_height}}: {{px.total_height}};
@{{strings.name_image}}: '{{{escaped_image}}}';
@{{strings.name}}: {{px.x}} {{px.y}} {{px.offset_x}} {{px.offset_y}} {{px.width}} {{px.height}} {{px.total_width}} {{px.total_height}} '{{{escaped_image}}}' '{{name}}';
{{/each}}
{{/content}}
{{#content "spritesheet" mode="append"}}
@{{retina_spritesheet_info.strings.name_width}}: {{retina_spritesheet.px.width}};
@{{retina_spritesheet_info.strings.name_height}}: {{retina_spritesheet.px.height}};
@{{retina_spritesheet_info.strings.name_image}}: '{{{retina_spritesheet.escaped_image}}}';
@{{retina_spritesheet_info.strings.name_sprites}}:{{#each retina_sprites}} @{{strings.name}}{{/each}};
@{{retina_spritesheet_info.strings.name}}: {{retina_spritesheet.px.width}} {{retina_spritesheet.px.height}} '{{{retina_spritesheet.escaped_image}}}' @{{retina_spritesheet_info.strings.name_sprites}};

/*
These "retina group" variables are mappings for the naming and pairing of normal and retina sprites.

The list formatted variables are intended for mixins like `retina-sprite` and `retina-sprites`.
*/
{{#each retina_groups}}
@{{strings.name_group_name}}: '{{name}}';
@{{strings.name_group}}: '{{name}}' @{{normal.strings.name}} @{{retina.strings.name}};
{{/each}}
@{{retina_groups_info.strings.name}}:{{#each retina_groups}} @{{strings.name_group}}{{/each}};
{{/content}}

{{#content "sprite-functions" mode="append"}}
{{#if options.functions}}

/*
The `retina-sprite` class sets up rules and a media query for a sprite/retina sprite.
  It should be used with a "retina group" variable.

The media query is from CSS Tricks: https://css-tricks.com/snippets/css/retina-display-media-query/

@icon-home-group: 'icon-home' @icon-home @icon-home-2x;

.icon-home {
  .retina-sprite(@icon-home-group);
}
*/
.sprite-background-size(@sprite) {
  @sprite-total-width: extract(@sprite, 7);
  @sprite-total-height: extract(@sprite, 8);
  background-size: @sprite-total-width @sprite-total-height;
}

.retina-sprite(@retina-group) {
  @normal-sprite: extract(@retina-group, 2);
  @retina-sprite: extract(@retina-group, 3);
  .sprite(@normal-sprite);

  @media (-webkit-min-device-pixel-ratio: 2),
         (min-resolution: 192dpi) {
    .sprite-image(@retina-sprite);
    .sprite-background-size(@normal-sprite);
  }
}
{{/if}}
{{/content}}

{{#content "spritesheet-functions" mode="append"}}
{{#if options.functions}}

/*
The `.retina-sprites` mixin generates a CSS rule and media query for retina groups
  This yields the same output as CSS retina template but can be overridden in LESS

.retina-sprites(@retina-groups);
*/
.retina-sprites(@retina-groups, @i: 1) when (@i <= length(@retina-groups)) {
  @retina-group: extract(@retina-groups, @i);
  @sprite-name: e(extract(@retina-group, 1));
  .@{sprite-name} {
    .retina-sprite(@retina-group);
  }
  .retina-sprites(@retina-groups, @i + 1);
}
{{/if}}
{{/content}}
{{/extend}}