forked from treehouse/mastodon
615 lines
16 KiB
JavaScript
615 lines
16 KiB
JavaScript
import React from 'react';
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import PropTypes from 'prop-types';
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import Button from 'flavours/glitch/components/button';
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import ImmutablePureComponent from 'react-immutable-pure-component';
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import Atrament from 'atrament'; // the doodling library
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import { connect } from 'react-redux';
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import ImmutablePropTypes from 'react-immutable-proptypes';
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import { doodleSet, uploadCompose } from 'flavours/glitch/actions/compose';
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import IconButton from 'flavours/glitch/components/icon_button';
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import { debounce, mapValues } from 'lodash';
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import classNames from 'classnames';
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// palette nicked from MyPaint, CC0
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const palette = [
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['rgb( 0, 0, 0)', 'Black'],
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['rgb( 38, 38, 38)', 'Gray 15'],
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['rgb( 77, 77, 77)', 'Grey 30'],
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['rgb(128, 128, 128)', 'Grey 50'],
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['rgb(171, 171, 171)', 'Grey 67'],
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['rgb(217, 217, 217)', 'Grey 85'],
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['rgb(255, 255, 255)', 'White'],
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['rgb(128, 0, 0)', 'Maroon'],
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['rgb(209, 0, 0)', 'English-red'],
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['rgb(255, 54, 34)', 'Tomato'],
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['rgb(252, 60, 3)', 'Orange-red'],
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['rgb(255, 140, 105)', 'Salmon'],
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['rgb(252, 232, 32)', 'Cadium-yellow'],
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['rgb(243, 253, 37)', 'Lemon yellow'],
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['rgb(121, 5, 35)', 'Dark crimson'],
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['rgb(169, 32, 62)', 'Deep carmine'],
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['rgb(255, 140, 0)', 'Orange'],
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['rgb(255, 168, 18)', 'Dark tangerine'],
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['rgb(217, 144, 88)', 'Persian orange'],
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['rgb(194, 178, 128)', 'Sand'],
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['rgb(255, 229, 180)', 'Peach'],
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['rgb(100, 54, 46)', 'Bole'],
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['rgb(108, 41, 52)', 'Dark cordovan'],
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['rgb(163, 65, 44)', 'Chestnut'],
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['rgb(228, 136, 100)', 'Dark salmon'],
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['rgb(255, 195, 143)', 'Apricot'],
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['rgb(255, 219, 188)', 'Unbleached silk'],
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['rgb(242, 227, 198)', 'Straw'],
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['rgb( 53, 19, 13)', 'Bistre'],
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['rgb( 84, 42, 14)', 'Dark chocolate'],
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['rgb(102, 51, 43)', 'Burnt sienna'],
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['rgb(184, 66, 0)', 'Sienna'],
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['rgb(216, 153, 12)', 'Yellow ochre'],
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['rgb(210, 180, 140)', 'Tan'],
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['rgb(232, 204, 144)', 'Dark wheat'],
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['rgb( 0, 49, 83)', 'Prussian blue'],
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['rgb( 48, 69, 119)', 'Dark grey blue'],
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['rgb( 0, 71, 171)', 'Cobalt blue'],
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['rgb( 31, 117, 254)', 'Blue'],
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['rgb(120, 180, 255)', 'Bright french blue'],
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['rgb(171, 200, 255)', 'Bright steel blue'],
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['rgb(208, 231, 255)', 'Ice blue'],
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['rgb( 30, 51, 58)', 'Medium jungle green'],
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['rgb( 47, 79, 79)', 'Dark slate grey'],
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['rgb( 74, 104, 93)', 'Dark grullo green'],
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['rgb( 0, 128, 128)', 'Teal'],
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['rgb( 67, 170, 176)', 'Turquoise'],
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['rgb(109, 174, 199)', 'Cerulean frost'],
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['rgb(173, 217, 186)', 'Tiffany green'],
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['rgb( 22, 34, 29)', 'Gray-asparagus'],
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['rgb( 36, 48, 45)', 'Medium dark teal'],
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['rgb( 74, 104, 93)', 'Xanadu'],
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['rgb(119, 198, 121)', 'Mint'],
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['rgb(175, 205, 182)', 'Timberwolf'],
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['rgb(185, 245, 246)', 'Celeste'],
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['rgb(193, 255, 234)', 'Aquamarine'],
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['rgb( 29, 52, 35)', 'Cal Poly Pomona'],
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['rgb( 1, 68, 33)', 'Forest green'],
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['rgb( 42, 128, 0)', 'Napier green'],
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['rgb(128, 128, 0)', 'Olive'],
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['rgb( 65, 156, 105)', 'Sea green'],
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['rgb(189, 246, 29)', 'Green-yellow'],
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['rgb(231, 244, 134)', 'Bright chartreuse'],
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['rgb(138, 23, 137)', 'Purple'],
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['rgb( 78, 39, 138)', 'Violet'],
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['rgb(193, 75, 110)', 'Dark thulian pink'],
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['rgb(222, 49, 99)', 'Cerise'],
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['rgb(255, 20, 147)', 'Deep pink'],
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['rgb(255, 102, 204)', 'Rose pink'],
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['rgb(255, 203, 219)', 'Pink'],
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['rgb(255, 255, 255)', 'White'],
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['rgb(229, 17, 1)', 'RGB Red'],
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['rgb( 0, 255, 0)', 'RGB Green'],
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['rgb( 0, 0, 255)', 'RGB Blue'],
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['rgb( 0, 255, 255)', 'CMYK Cyan'],
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['rgb(255, 0, 255)', 'CMYK Magenta'],
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['rgb(255, 255, 0)', 'CMYK Yellow'],
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];
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// re-arrange to the right order for display
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let palReordered = [];
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for (let row = 0; row < 7; row++) {
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for (let col = 0; col < 11; col++) {
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palReordered.push(palette[col * 7 + row]);
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}
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palReordered.push(null); // null indicates a <br />
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}
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// Utility for converting base64 image to binary for upload
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// https://stackoverflow.com/questions/35940290/how-to-convert-base64-string-to-javascript-file-object-like-as-from-file-input-f
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function dataURLtoFile(dataurl, filename) {
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let arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],
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bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);
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while(n--){
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u8arr[n] = bstr.charCodeAt(n);
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}
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return new File([u8arr], filename, { type: mime });
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}
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const DOODLE_SIZES = {
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normal: [500, 500, 'Square 500'],
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tootbanner: [702, 330, 'Tootbanner'],
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s640x480: [640, 480, '640×480 - 480p'],
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s800x600: [800, 600, '800×600 - SVGA'],
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s720x480: [720, 405, '720x405 - 16:9'],
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};
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const mapStateToProps = state => ({
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options: state.getIn(['compose', 'doodle']),
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});
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const mapDispatchToProps = dispatch => ({
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/** Set options in the redux store */
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setOpt: (opts) => dispatch(doodleSet(opts)),
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/** Submit doodle for upload */
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submit: (file) => dispatch(uploadCompose([file])),
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});
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/**
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* Doodling dialog with drawing canvas
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*
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* Keyboard shortcuts:
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* - Delete: Clear screen, fill with background color
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* - Backspace, Ctrl+Z: Undo one step
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* - Ctrl held while drawing: Use background color
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* - Shift held while clicking screen: Use fill tool
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*
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* Palette:
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* - Left mouse button: pick foreground
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* - Ctrl + left mouse button: pick background
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* - Right mouse button: pick background
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*/
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@connect(mapStateToProps, mapDispatchToProps)
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export default class DoodleModal extends ImmutablePureComponent {
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static propTypes = {
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options: ImmutablePropTypes.map,
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onClose: PropTypes.func.isRequired,
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setOpt: PropTypes.func.isRequired,
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submit: PropTypes.func.isRequired,
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};
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//region Option getters/setters
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/** Foreground color */
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get fg () {
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return this.props.options.get('fg');
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}
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set fg (value) {
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this.props.setOpt({ fg: value });
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}
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/** Background color */
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get bg () {
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return this.props.options.get('bg');
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}
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set bg (value) {
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this.props.setOpt({ bg: value });
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}
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/** Swap Fg and Bg for drawing */
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get swapped () {
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return this.props.options.get('swapped');
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}
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set swapped (value) {
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this.props.setOpt({ swapped: value });
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}
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/** Mode - 'draw' or 'fill' */
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get mode () {
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return this.props.options.get('mode');
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}
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set mode (value) {
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this.props.setOpt({ mode: value });
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}
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/** Base line weight */
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get weight () {
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return this.props.options.get('weight');
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}
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set weight (value) {
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this.props.setOpt({ weight: value });
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}
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/** Drawing opacity */
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get opacity () {
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return this.props.options.get('opacity');
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}
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set opacity (value) {
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this.props.setOpt({ opacity: value });
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}
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/** Adaptive stroke - change width with speed */
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get adaptiveStroke () {
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return this.props.options.get('adaptiveStroke');
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}
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set adaptiveStroke (value) {
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this.props.setOpt({ adaptiveStroke: value });
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}
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/** Smoothing (for mouse drawing) */
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get smoothing () {
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return this.props.options.get('smoothing');
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}
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set smoothing (value) {
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this.props.setOpt({ smoothing: value });
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}
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/** Size preset */
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get size () {
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return this.props.options.get('size');
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}
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set size (value) {
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this.props.setOpt({ size: value });
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}
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//endregion
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/** Key up handler */
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handleKeyUp = (e) => {
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if (e.target.nodeName === 'INPUT') return;
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if (e.key === 'Delete') {
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e.preventDefault();
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this.handleClearBtn();
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return;
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}
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if (e.key === 'Backspace' || (e.key === 'z' && (e.ctrlKey || e.metaKey))) {
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e.preventDefault();
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this.undo();
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}
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if (e.key === 'Control' || e.key === 'Meta') {
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this.controlHeld = false;
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this.swapped = false;
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}
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if (e.key === 'Shift') {
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this.shiftHeld = false;
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this.mode = 'draw';
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}
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};
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/** Key down handler */
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handleKeyDown = (e) => {
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if (e.key === 'Control' || e.key === 'Meta') {
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this.controlHeld = true;
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this.swapped = true;
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}
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if (e.key === 'Shift') {
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this.shiftHeld = true;
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this.mode = 'fill';
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}
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};
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/**
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* Component installed in the DOM, do some initial set-up
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*/
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componentDidMount () {
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this.controlHeld = false;
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this.shiftHeld = false;
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this.swapped = false;
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window.addEventListener('keyup', this.handleKeyUp, false);
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window.addEventListener('keydown', this.handleKeyDown, false);
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};
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/**
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* Tear component down
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*/
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componentWillUnmount () {
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window.removeEventListener('keyup', this.handleKeyUp, false);
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window.removeEventListener('keydown', this.handleKeyDown, false);
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if (this.sketcher) this.sketcher.destroy();
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}
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/**
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* Set reference to the canvas element.
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* This is called during component init
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*
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* @param elem - canvas element
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*/
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setCanvasRef = (elem) => {
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this.canvas = elem;
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if (elem) {
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elem.addEventListener('dirty', () => {
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this.saveUndo();
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this.sketcher._dirty = false;
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});
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elem.addEventListener('click', () => {
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// sketcher bug - does not fire dirty on fill
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if (this.mode === 'fill') {
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this.saveUndo();
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}
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});
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// prevent context menu
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elem.addEventListener('contextmenu', (e) => {
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e.preventDefault();
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});
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elem.addEventListener('mousedown', (e) => {
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if (e.button === 2) {
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this.swapped = true;
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}
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});
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elem.addEventListener('mouseup', (e) => {
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if (e.button === 2) {
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this.swapped = this.controlHeld;
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}
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});
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this.initSketcher(elem);
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this.mode = 'draw'; // Reset mode - it's confusing if left at 'fill'
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}
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};
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/**
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* Set up the sketcher instance
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*
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* @param canvas - canvas element. Null if we're just resizing
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*/
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initSketcher (canvas = null) {
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const sizepreset = DOODLE_SIZES[this.size];
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if (this.sketcher) this.sketcher.destroy();
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this.sketcher = new Atrament(canvas || this.canvas, sizepreset[0], sizepreset[1]);
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if (canvas) {
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this.ctx = this.sketcher.context;
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this.updateSketcherSettings();
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}
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this.clearScreen();
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}
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/**
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* Done button handler
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*/
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onDoneButton = () => {
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const dataUrl = this.sketcher.toImage();
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const file = dataURLtoFile(dataUrl, 'doodle.png');
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this.props.submit(file);
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this.props.onClose(); // close dialog
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};
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/**
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* Cancel button handler
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*/
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onCancelButton = () => {
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if (this.undos.length > 1 && !confirm('Discard doodle? All changes will be lost!')) {
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return;
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}
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this.props.onClose(); // close dialog
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};
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/**
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* Update sketcher options based on state
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*/
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updateSketcherSettings () {
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if (!this.sketcher) return;
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if (this.oldSize !== this.size) this.initSketcher();
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this.sketcher.color = (this.swapped ? this.bg : this.fg);
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this.sketcher.opacity = this.opacity;
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this.sketcher.weight = this.weight;
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this.sketcher.mode = this.mode;
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this.sketcher.smoothing = this.smoothing;
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this.sketcher.adaptiveStroke = this.adaptiveStroke;
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this.oldSize = this.size;
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}
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/**
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* Fill screen with background color
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*/
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clearScreen = () => {
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this.ctx.fillStyle = this.bg;
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this.ctx.fillRect(-1, -1, this.canvas.width+2, this.canvas.height+2);
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this.undos = [];
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this.doSaveUndo();
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};
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/**
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* Undo one step
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*/
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undo = () => {
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if (this.undos.length > 1) {
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this.undos.pop();
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const buf = this.undos.pop();
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this.sketcher.clear();
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this.ctx.putImageData(buf, 0, 0);
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this.doSaveUndo();
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}
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};
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/**
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* Save canvas content into the undo buffer immediately
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*/
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doSaveUndo = () => {
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this.undos.push(this.ctx.getImageData(0, 0, this.canvas.width, this.canvas.height));
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};
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/**
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* Called on each canvas change.
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* Saves canvas content to the undo buffer after some period of inactivity.
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*/
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saveUndo = debounce(() => {
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this.doSaveUndo();
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}, 100);
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/**
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* Palette left click.
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* Selects Fg color (or Bg, if Control/Meta is held)
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*
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* @param e - event
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*/
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onPaletteClick = (e) => {
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const c = e.target.dataset.color;
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if (this.controlHeld) {
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this.bg = c;
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} else {
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this.fg = c;
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}
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e.target.blur();
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e.preventDefault();
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};
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/**
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* Palette right click.
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* Selects Bg color
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*
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* @param e - event
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*/
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onPaletteRClick = (e) => {
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this.bg = e.target.dataset.color;
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e.target.blur();
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e.preventDefault();
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};
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/**
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* Handle click on the Draw mode button
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*
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* @param e - event
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*/
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setModeDraw = (e) => {
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this.mode = 'draw';
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e.target.blur();
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};
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/**
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* Handle click on the Fill mode button
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*
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* @param e - event
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*/
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setModeFill = (e) => {
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this.mode = 'fill';
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e.target.blur();
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};
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/**
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* Handle click on Smooth checkbox
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*
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* @param e - event
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*/
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tglSmooth = (e) => {
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this.smoothing = !this.smoothing;
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e.target.blur();
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};
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/**
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* Handle click on Adaptive checkbox
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*
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* @param e - event
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*/
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tglAdaptive = (e) => {
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this.adaptiveStroke = !this.adaptiveStroke;
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e.target.blur();
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};
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/**
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* Handle change of the Weight input field
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*
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* @param e - event
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*/
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setWeight = (e) => {
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this.weight = +e.target.value || 1;
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};
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/**
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* Set size - clalback from the select box
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*
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* @param e - event
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*/
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changeSize = (e) => {
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let newSize = e.target.value;
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if (newSize === this.oldSize) return;
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if (this.undos.length > 1 && !confirm('Change size? This will erase your drawing!')) {
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return;
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}
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this.size = newSize;
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};
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handleClearBtn = () => {
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if (this.undos.length > 1 && !confirm('Clear screen? This will erase your drawing!')) {
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return;
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}
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this.clearScreen();
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};
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/**
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* Render the component
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*/
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render () {
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this.updateSketcherSettings();
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||
|
||
return (
|
||
<div className='modal-root__modal doodle-modal'>
|
||
<div className='doodle-modal__container'>
|
||
<canvas ref={this.setCanvasRef} />
|
||
</div>
|
||
|
||
<div className='doodle-modal__action-bar'>
|
||
<div className='doodle-toolbar'>
|
||
<Button text='Done' onClick={this.onDoneButton} />
|
||
<Button text='Cancel' onClick={this.onCancelButton} />
|
||
</div>
|
||
<div className='filler' />
|
||
<div className='doodle-toolbar with-inputs'>
|
||
<div>
|
||
<label htmlFor='dd_smoothing'>Smoothing</label>
|
||
<span className='val'>
|
||
<input type='checkbox' id='dd_smoothing' onChange={this.tglSmooth} checked={this.smoothing} />
|
||
</span>
|
||
</div>
|
||
<div>
|
||
<label htmlFor='dd_adaptive'>Adaptive</label>
|
||
<span className='val'>
|
||
<input type='checkbox' id='dd_adaptive' onChange={this.tglAdaptive} checked={this.adaptiveStroke} />
|
||
</span>
|
||
</div>
|
||
<div>
|
||
<label htmlFor='dd_weight'>Weight</label>
|
||
<span className='val'>
|
||
<input type='number' min={1} id='dd_weight' value={this.weight} onChange={this.setWeight} />
|
||
</span>
|
||
</div>
|
||
<div>
|
||
<select aria-label='Canvas size' onInput={this.changeSize} defaultValue={this.size}>
|
||
{ Object.values(mapValues(DOODLE_SIZES, (val, k) =>
|
||
<option key={k} value={k}>{val[2]}</option>
|
||
)) }
|
||
</select>
|
||
</div>
|
||
</div>
|
||
<div className='doodle-toolbar'>
|
||
<IconButton icon='pencil' title='Draw' label='Draw' onClick={this.setModeDraw} size={18} active={this.mode === 'draw'} inverted />
|
||
<IconButton icon='bath' title='Fill' label='Fill' onClick={this.setModeFill} size={18} active={this.mode === 'fill'} inverted />
|
||
<IconButton icon='undo' title='Undo' label='Undo' onClick={this.undo} size={18} inverted />
|
||
<IconButton icon='trash' title='Clear' label='Clear' onClick={this.handleClearBtn} size={18} inverted />
|
||
</div>
|
||
<div className='doodle-palette'>
|
||
{
|
||
palReordered.map((c, i) =>
|
||
c === null ?
|
||
<br key={i} /> :
|
||
<button
|
||
key={i}
|
||
style={{ backgroundColor: c[0] }}
|
||
onClick={this.onPaletteClick}
|
||
onContextMenu={this.onPaletteRClick}
|
||
data-color={c[0]}
|
||
title={c[1]}
|
||
className={classNames({
|
||
'foreground': this.fg === c[0],
|
||
'background': this.bg === c[0],
|
||
})}
|
||
/>
|
||
)
|
||
}
|
||
</div>
|
||
</div>
|
||
</div>
|
||
);
|
||
}
|
||
|
||
}
|