satie/src/implBarline_barlineView.ts

A sheet music renderer for the web

/**
 * This file is part of Satie music engraver <https://github.com/jnetterf/satie>.
 * Copyright (C) Joshua Netterfield <joshua.ca> 2015 - present.
 * 
 * Satie is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * Satie is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with Satie.  If not, see <http://www.gnu.org/licenses/>.
 */

import {PartSymbolType} from "musicxml-interfaces";
import {createFactory, Component, DOM, PropTypes, ReactElement} from "react";
import {some, map} from "lodash";

import Line from "./private_views_line";

import AttributesView from "./implAttributes_attributesView";

import BarlineModel from "./implBarline_barlineModel";

const $AttributesView = createFactory(AttributesView);
const $Line = createFactory(Line);

/**
 * Renders a full-stave-height barline at (x,y).
 * Does not do any interesting calculations.
 */
export default class BarlineView extends Component<{layout: BarlineModel.IBarlineLayout}, {}> {
    static contextTypes = {
        originY: PropTypes.number.isRequired,
        systemBottom: PropTypes.number.isRequired,
        systemTop: PropTypes.number.isRequired
    } as any;

    context: {
        originY: number;
        systemBottom: number;
        systemTop: number;
    };

    render(): ReactElement<any> {
        const originY = this.context.originY;

        const layout = this.props.layout;
        const model = layout.model;

        const x = model.defaultX;
        const y = originY - model.defaultY;

        // TODO: render BarStyleType.Dashed:
        // TODO: render BarStyleType.Dotted:
        // TODO: render BarStyleType.Short:
        // TODO: render BarStyleType.Tick:

        let yTop: number;
        let yBottom: number;
        if (layout.partSymbol && layout.partSymbol.type !== PartSymbolType.None ||
                layout.partGroups && some(layout.partGroups, group => group.groupBarline)) {
            yTop = this.context.systemTop;
            yBottom = this.context.systemBottom;
        } else {
            yTop = y - layout.height - layout.yOffset;
            yBottom = y + layout.height - layout.yOffset;
        }

        if (model.satieAttributes) {
            model.satieAttributes.overrideX = layout.overrideX + model.satieAttribsOffset;
        }

        return DOM.g(null,
            map(layout.lineStarts, (start, idx) => $Line({
                key: idx,
                stroke: model.barStyle.color,
                strokeWidth: layout.lineWidths[idx],
                x1: x + start + layout.lineWidths[idx] / 2,
                x2: x + start + layout.lineWidths[idx] / 2,
                y1: yTop,
                y2: yBottom
            })),
            model.satieAttributes && $AttributesView({
                layout: model.satieAttributes
            })
        /* DOM.g */);
    }
};