vectorcraft/crates/tools/src/settings.rs

//! Tool options that persist: a tool keeps them when another tool is chosen and they are saved
//! with the preferences, as the reference app keeps each tool's options. Options that are the
//! state of an interaction (pins, a reference point, the text being edited, the files a place
//! cursor holds) aren't listed: they start afresh.
//!
//! Each row names the tools it covers, the store their values live in and the option keys. A row
//! with a shared store gives every tool it lists one set of values: the Liquify tools share their
//! Global Brush Dimensions, the Symbolism tools their brush. Otherwise each tool has its own store,
//! named after its id.

/// (tools, the store they share (None: each tool's own), option keys).
type Row = (&'static [&'static str], Option<&'static str>, &'static [&'static str]);

/// The Liquify tools.
pub const LIQUIFY: &[&str] = &["warp", "twirl", "pucker", "bloat", "scallop", "crystallize", "wrinkle"];

/// The Symbolism tools.
pub const SYMBOLISM: &[&str] =
    &["symbolSprayer", "symbolShifter", "symbolScruncher", "symbolSizer", "symbolSpinner", "symbolStainer", "symbolScreener", "symbolStyler"];

const ROWS: &[Row] = &[
    (&["dimension"], None, &["mode", "style"]),
    // Global Brush Dimensions.
    (LIQUIFY, Some("liquify"), &["width", "height", "angle", "intensity", "usePressure", "showBrush"]),
    (LIQUIFY, None, &["detail", "simplify", "simplifyOn", "rate", "complexity", "horizontal", "vertical", "affectAnchors", "affectIn", "affectOut"]),
    (SYMBOLISM, Some("symbolism"), &["diameter", "intensity", "density"]),
    (&["mirrorCut"], None, &["axis", "keep"]),
    (&["puppetWarp"], None, &["showMesh", "expand"]),
    (&["arc"], None, &["closed", "lengthX", "lengthY", "reference", "baseAlong", "slope", "fillArc"]),
    (&["spiral"], None, &["decay", "segments", "clockwise"]),
    // The grids' Tool Options: the dividers and switches the drag uses, the Default Size and
    // Reference Point a click's dialog opens with.
    (&["rectangularGrid"], None, &["rows", "columns", "rowSkew", "columnSkew", "frame", "fill", "width", "height", "reference"]),
    (&["polarGrid"], None, &["concentric", "radial", "concentricSkew", "radialSkew", "compound", "fill", "width", "height", "reference"]),
    // Line Segment Tool Options: the Length and Angle a click's dialog opens with, Fill Line.
    (&["lineSegment"], None, &["length", "angle", "fillLine"]),
    (&["pencil", "paintbrush"], None, &["fidelity", "fill", "keepSelected", "editWithin", "closeWithin"]),
    // Pencil Tool Options' Alt key toggles to Smooth Tool, Live preview and Live curve fitting (the
    // Paintbrush has none of them).
    (&["pencil"], None, &["altSmooth", "livePreview", "liveFit"]),
    (&["smooth"], None, &["fidelity"]),
    (&["blobBrush", "eraser"], None, &["size", "sizeMode", "sizeVariation"]),
    (&["blobBrush"], None, &["fidelity", "keepSelected", "mergeOnlySelection"]),
    // Eraser Tool Options' tip shape.
    (&["blobBrush", "eraser"], None, &["angle", "roundness"]),
    // Live Paint Selection Tool Options (`builder::LivePaintSelectionTool`).
    (&["livePaintSelection"], None, &["selectFills", "selectStrokes", "color", "width"]),
    (&["polygon"], None, &["sides"]),
    (&["star"], None, &["points"]),
    (&["freeTransform"], None, &["constrain"]),
    // Shape Builder Tool Options (`builder::ShapeBuilderOptions`).
    (
        &["shapeBuilder"],
        None,
        &[
            "openFilledAsClosed",
            "pickColorFrom",
            "cursorSwatchPreview",
            "selection",
            "highlightFill",
            "gapDetection",
            "gapLength",
            "clickStrokeSplitsPath",
            "highlightStroke",
            "highlightColor",
        ],
    ),
    (&["artboard"], None, &["moveArt", "scaleArt"]),
    // The add-ons' tools (`crate::addons`).
    (&[crate::addons::anchor_eraser::ID], None, &["size", "tolerance", "pressure"]),
    (&[crate::addons::extend_path::ID], None, &["mode"]),
    (&[crate::addons::corner_tool::ID], None, &["radius", "kind"]),
    (&[crate::addons::shared_edge::ID], None, &["diameter", "tolerance", "together"]),
    (&[crate::addons::smart_pen::ID], None, &["next"]),
    // The kind first: a new kind resets the values after it.
    (&[crate::addons::parametric_shape::ID], None, &["kind", "count", "a", "b", "radius", "width", "height", "rotation"]),
    // Flare Tool Options (`extra::FLARE_OPTIONS` and the Rays and Rings checkboxes).
    (
        &["flare"],
        None,
        &[
            "diameter",
            "opacity",
            "brightness",
            "growth",
            "fuzziness",
            "raysOn",
            "rays",
            "longest",
            "rayFuzziness",
            "ringsOn",
            "pathLength",
            "rings",
            "largest",
            "direction",
        ],
    ),
];

/// The stores `tool`'s persistent options live in, each with the option keys it holds.
pub fn stores(tool: &str) -> impl Iterator<Item = (&'static str, &'static [&'static str])> + '_ {
    ROWS.iter().filter_map(move |(tools, shared, keys)| {
        let id = tools.iter().find(|t| **t == tool)?;
        Some((shared.unwrap_or(id), *keys))
    })
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn every_listed_option_is_one_the_tool_reports() {
        for (tools, _, keys) in ROWS {
            for id in *tools {
                assert!(crate::tool_info(id).is_some(), "{id} is a tool");
                let opts = crate::create(id).options();
                for k in *keys {
                    assert!(opts.get(*k).is_some(), "{id} reports `{k}` in {opts}");
                }
            }
        }
    }

    #[test]
    fn liquify_tools_share_the_global_brush() {
        let warp: Vec<_> = stores("warp").collect();
        let twirl: Vec<_> = stores("twirl").collect();
        assert_eq!(warp[0], twirl[0]);
        assert_eq!(warp[0].0, "liquify");
        assert_eq!((warp[1].0, twirl[1].0), ("warp", "twirl"));
        assert_eq!(stores("selection").count(), 0);
    }
}