static/colour.ts

// Copyright (c) 2016, Compiler Explorer Authors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright notice,
//       this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

import * as monaco from 'monaco-editor';

type AppTheme = 'default' | 'dark' | 'all';

interface ColourScheme {
    name: string;
    desc: string;
    count: number;
    themes: AppTheme[];
}

// If you want to use a scheme in every theme, set `theme: ['all']`
export const schemes: ColourScheme[] = [
    {name: 'rainbow', desc: 'Rainbow 1', count: 12, themes: ['default']},
    {name: 'rainbow2', desc: 'Rainbow 2', count: 12, themes: ['default']},
    {name: 'earth', desc: 'Earth tones (colourblind safe)', count: 9, themes: ['default']},
    {name: 'green-blue', desc: 'Greens and blues (colourblind safe)', count: 4, themes: ['default']},
    {name: 'gray-shade', desc: 'Gray shades', count: 4, themes: ['dark']},
    {name: 'rainbow-dark', desc: 'Dark Rainbow', count: 12, themes: ['dark']},
];

export function applyColours(
    editor: monaco.editor.ICodeEditor,
    colours: Record<number, number>,
    schemeName: string,
    previousDecorations: string[],
): string[] {
    const scheme = schemes.find((scheme) => scheme.name === schemeName) ?? schemes[0];
    const newDecorations: monaco.editor.IModelDeltaDecoration[] = Object.entries(colours)
        .map(([line, index]) => {
            const realLineNumber = parseInt(line) + 1;
            return {
                range: new monaco.Range(realLineNumber, 1, realLineNumber, 1),
                options: {
                    isWholeLine: true,
                    className: 'line-linkage ' + scheme.name + '-' + (index % scheme.count),
                },
            };
        });

    return editor.deltaDecorations(previousDecorations, newDecorations);
}