{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://github.com/isocialPractice/napkin-sketch/docs/api/schema/composition-style.schema.json",
  "title": "Napkin composition style",
  "description": "Rules keyed by layer name that restyle a page or a composition whose layers are named to match.",
  "type": "object",
  "required": [
    "napkinCompositionStyle",
    "name"
  ],
  "additionalProperties": false,
  "properties": {
    "napkinCompositionStyle": {
      "const": 1,
      "description": "The format: 1."
    },
    "name": {
      "type": "string",
      "minLength": 1,
      "maxLength": 120,
      "description": "The style's name."
    },
    "layers": {
      "type": "object",
      "description": "Layer rules by layer name.",
      "additionalProperties": {
        "$ref": "#/definitions/layerRule"
      }
    },
    "text": {
      "type": "object",
      "description": "Text rules by layer name.",
      "additionalProperties": {
        "$ref": "#/definitions/textRule"
      }
    },
    "strokes": {
      "type": "object",
      "description": "Stroke rules by layer name.",
      "additionalProperties": {
        "$ref": "#/definitions/strokeRule"
      }
    }
  },
  "definitions": {
    "layerRule": {
      "type": "object",
      "description": "A layer rule: what it sets on the layers it names.",
      "additionalProperties": false,
      "properties": {
        "opacity": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "The layer's opacity, 0 to 1."
        },
        "blend": {
          "$ref": "#/definitions/blend",
          "description": "The layer's blend mode, by its napkin name or a CSS one."
        },
        "isolate": {
          "type": "boolean",
          "description": "A group's Isolate Blending."
        },
        "visible": {
          "type": "boolean",
          "description": "Whether the layer shows."
        },
        "effects": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/effect"
          },
          "description": "The layer's effects, in place of its own; an empty list takes them away."
        },
        "fill": {
          "anyOf": [
            {
              "$ref": "#/definitions/color"
            },
            {
              "const": "none"
            }
          ],
          "description": "Every closed shape's fill and every text's color under the layer; none takes the fills away."
        },
        "stroke": {
          "anyOf": [
            {
              "$ref": "#/definitions/color"
            },
            {
              "const": "none"
            }
          ],
          "description": "Every path's outline color under the layer, turned on; none turns closed shapes' outlines off."
        }
      }
    },
    "textRule": {
      "type": "object",
      "description": "A text rule: what it sets on the layers it names.",
      "additionalProperties": false,
      "properties": {
        "config": {
          "type": "string",
          "minLength": 1,
          "description": "A Text Configuration by name, or Default Configuration for none."
        },
        "fontFamily": {
          "type": "string",
          "minLength": 1,
          "description": "The font family."
        },
        "fontStyle": {
          "type": "string",
          "minLength": 1,
          "description": "The face: Regular, Bold, Italic and so on."
        },
        "fontSize": {
          "type": "number",
          "minimum": 0.13333333333333333,
          "maximum": 1728,
          "description": "The size, in pixels."
        },
        "leading": {
          "anyOf": [
            {
              "type": "number",
              "minimum": 0
            },
            {
              "const": "auto"
            }
          ],
          "description": "The line spacing in pixels, or auto."
        },
        "kerning": {
          "enum": [
            "auto",
            "none"
          ],
          "description": "The font's kerning, or none."
        },
        "tracking": {
          "type": "number",
          "minimum": -1000,
          "maximum": 10000,
          "description": "The space between letters, in thousandths of an em."
        },
        "wordSpacing": {
          "type": "number",
          "minimum": 0,
          "maximum": 1000,
          "description": "The space between words, as a share of the font's."
        },
        "caps": {
          "enum": [
            "normal",
            "all",
            "small"
          ],
          "description": "All capitals, small capitals, or as typed."
        },
        "position": {
          "enum": [
            "normal",
            "superscript",
            "subscript"
          ],
          "description": "Superscript, subscript, or on the line."
        },
        "hScale": {
          "type": "number",
          "minimum": 1,
          "maximum": 10000,
          "description": "The width of the letters, in percent."
        },
        "vScale": {
          "type": "number",
          "minimum": 1,
          "maximum": 10000,
          "description": "The height of the letters, in percent."
        },
        "baselineShift": {
          "type": "number",
          "minimum": -1296,
          "maximum": 1296,
          "description": "How far the letters sit above their line."
        },
        "rotation": {
          "type": "number",
          "description": "Each letter turned, in degrees."
        },
        "underline": {
          "type": "boolean",
          "description": "A line under the letters."
        },
        "strike": {
          "type": "boolean",
          "description": "A line through the letters."
        },
        "color": {
          "$ref": "#/definitions/color",
          "description": "The letters' color."
        },
        "highlight": {
          "anyOf": [
            {
              "$ref": "#/definitions/color"
            },
            {
              "const": "none"
            }
          ],
          "description": "A highlight behind the letters, or none."
        },
        "align": {
          "enum": [
            "left",
            "center",
            "right",
            "justify"
          ],
          "description": "The paragraphs' alignment."
        },
        "leftIndent": {
          "type": "number",
          "minimum": -1728,
          "maximum": 1728,
          "description": "The indent on the left, in pixels."
        },
        "rightIndent": {
          "type": "number",
          "minimum": -1728,
          "maximum": 1728,
          "description": "The indent on the right, in pixels."
        },
        "firstIndent": {
          "type": "number",
          "minimum": -1728,
          "maximum": 1728,
          "description": "The first line's indent, in pixels."
        },
        "spaceBefore": {
          "type": "number",
          "minimum": 0,
          "maximum": 1728,
          "description": "The space before each paragraph, in pixels."
        },
        "spaceAfter": {
          "type": "number",
          "minimum": 0,
          "maximum": 1728,
          "description": "The space after each paragraph, in pixels."
        },
        "hyphenate": {
          "type": "boolean",
          "description": "Whether long words break with a hyphen."
        },
        "list": {
          "anyOf": [
            {
              "$ref": "#/definitions/list"
            },
            {
              "const": "none"
            }
          ],
          "description": "A bulleted or numbered list, or none."
        },
        "shade": {
          "anyOf": [
            {
              "$ref": "#/definitions/color"
            },
            {
              "const": "none"
            }
          ],
          "description": "A shade behind each paragraph, or none."
        },
        "flow": {
          "enum": [
            "markdown",
            "plain"
          ],
          "description": "Markdown Flow on, or the text shown as typed."
        },
        "accent": {
          "type": "string",
          "minLength": 1,
          "description": "A language's id or alias, auto, or none."
        },
        "effects": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/effect"
          },
          "description": "The text's effects, in place of its own; an empty list takes them away."
        },
        "blend": {
          "$ref": "#/definitions/blend",
          "description": "The blend mode of the layer each text sits on."
        }
      }
    },
    "strokeRule": {
      "type": "object",
      "description": "A stroke rule: what it sets on the layers it names.",
      "additionalProperties": false,
      "properties": {
        "color": {
          "$ref": "#/definitions/color",
          "description": "The outline's color."
        },
        "width": {
          "type": "number",
          "minimum": 0.01,
          "maximum": 10000,
          "description": "The outline's width, in pixels."
        },
        "strokeStyle": {
          "enum": [
            "solid",
            "dashed",
            "dotted"
          ],
          "description": "Solid, dashed or dotted."
        },
        "noStroke": {
          "type": "boolean",
          "description": "A closed shape's outline off, or on."
        },
        "profile": {
          "enum": [
            "uniform",
            "rounded",
            "tapered",
            "wave"
          ],
          "description": "A brush or marker line's width profile."
        },
        "fill": {
          "anyOf": [
            {
              "$ref": "#/definitions/color"
            },
            {
              "const": "none"
            }
          ],
          "description": "A closed shape's flat fill, or none."
        },
        "gradient": {
          "anyOf": [
            {
              "$ref": "#/definitions/gradient"
            },
            {
              "const": "none"
            }
          ],
          "description": "A closed shape's gradient: a type and two or more stops, or none."
        },
        "opacity": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "The mark's opacity, 0 to 1."
        },
        "effects": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/effect"
          },
          "description": "The mark's effects, in place of its own; an empty list takes them away."
        },
        "blend": {
          "$ref": "#/definitions/blend",
          "description": "The blend mode of the layer each path sits on."
        }
      }
    },
    "color": {
      "type": "string",
      "minLength": 1,
      "description": "A CSS color: #rrggbb, rgb(), hsl() or a name."
    },
    "blend": {
      "type": "string",
      "description": "A blend mode: normal, soak, stack, scorch, dry, sheer, bleach, fold, light, heavy, messy, avoidance, tidy, bright, dye, cover, or a CSS name such as multiply."
    },
    "effect": {
      "type": "object",
      "required": [
        "type"
      ],
      "properties": {
        "type": {
          "enum": [
            "blur",
            "brightness",
            "contrast",
            "saturate",
            "grayscale",
            "sepia",
            "invert",
            "hue-rotate",
            "opacity",
            "drop-shadow",
            "feather",
            "bevel",
            "emboss",
            "inner-shadow",
            "outer-glow",
            "inner-glow",
            "splatter",
            "warp",
            "3d"
          ]
        }
      },
      "description": "An effect as napkin's .skbk and API write it."
    },
    "gradient": {
      "type": "object",
      "required": [
        "type",
        "stops"
      ],
      "properties": {
        "type": {
          "enum": [
            "linear",
            "radial"
          ]
        },
        "angle": {
          "type": "number"
        },
        "stops": {
          "type": "array",
          "minItems": 2,
          "items": {
            "type": "object",
            "required": [
              "offset",
              "color"
            ],
            "properties": {
              "offset": {
                "type": "number"
              },
              "color": {
                "$ref": "#/definitions/color"
              }
            }
          }
        }
      }
    },
    "list": {
      "type": "object",
      "required": [
        "kind"
      ],
      "properties": {
        "kind": {
          "enum": [
            "bullet",
            "number"
          ]
        },
        "level": {
          "type": "number"
        },
        "marker": {
          "type": "string"
        },
        "start": {
          "type": "number"
        }
      }
    }
  }
}