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Diffstat (limited to 'app/javascript/flavours/glitch/features/ui/components/doodle_modal.jsx')
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1 files changed, 615 insertions, 0 deletions
diff --git a/app/javascript/flavours/glitch/features/ui/components/doodle_modal.jsx b/app/javascript/flavours/glitch/features/ui/components/doodle_modal.jsx new file mode 100644 index 000000000..162957ad8 --- /dev/null +++ b/app/javascript/flavours/glitch/features/ui/components/doodle_modal.jsx @@ -0,0 +1,615 @@ +import React from 'react'; +import PropTypes from 'prop-types'; +import Button from 'flavours/glitch/components/button'; +import ImmutablePureComponent from 'react-immutable-pure-component'; +import Atrament from 'atrament'; // the doodling library +import { connect } from 'react-redux'; +import ImmutablePropTypes from 'react-immutable-proptypes'; +import { doodleSet, uploadCompose } from 'flavours/glitch/actions/compose'; +import IconButton from 'flavours/glitch/components/icon_button'; +import { debounce, mapValues } from 'lodash'; +import classNames from 'classnames'; + +// palette nicked from MyPaint, CC0 +const palette = [ + ['rgb( 0, 0, 0)', 'Black'], + ['rgb( 38, 38, 38)', 'Gray 15'], + ['rgb( 77, 77, 77)', 'Grey 30'], + ['rgb(128, 128, 128)', 'Grey 50'], + ['rgb(171, 171, 171)', 'Grey 67'], + ['rgb(217, 217, 217)', 'Grey 85'], + ['rgb(255, 255, 255)', 'White'], + ['rgb(128, 0, 0)', 'Maroon'], + ['rgb(209, 0, 0)', 'English-red'], + ['rgb(255, 54, 34)', 'Tomato'], + ['rgb(252, 60, 3)', 'Orange-red'], + ['rgb(255, 140, 105)', 'Salmon'], + ['rgb(252, 232, 32)', 'Cadium-yellow'], + ['rgb(243, 253, 37)', 'Lemon yellow'], + ['rgb(121, 5, 35)', 'Dark crimson'], + ['rgb(169, 32, 62)', 'Deep carmine'], + ['rgb(255, 140, 0)', 'Orange'], + ['rgb(255, 168, 18)', 'Dark tangerine'], + ['rgb(217, 144, 88)', 'Persian orange'], + ['rgb(194, 178, 128)', 'Sand'], + ['rgb(255, 229, 180)', 'Peach'], + ['rgb(100, 54, 46)', 'Bole'], + ['rgb(108, 41, 52)', 'Dark cordovan'], + ['rgb(163, 65, 44)', 'Chestnut'], + ['rgb(228, 136, 100)', 'Dark salmon'], + ['rgb(255, 195, 143)', 'Apricot'], + ['rgb(255, 219, 188)', 'Unbleached silk'], + ['rgb(242, 227, 198)', 'Straw'], + ['rgb( 53, 19, 13)', 'Bistre'], + ['rgb( 84, 42, 14)', 'Dark chocolate'], + ['rgb(102, 51, 43)', 'Burnt sienna'], + ['rgb(184, 66, 0)', 'Sienna'], + ['rgb(216, 153, 12)', 'Yellow ochre'], + ['rgb(210, 180, 140)', 'Tan'], + ['rgb(232, 204, 144)', 'Dark wheat'], + ['rgb( 0, 49, 83)', 'Prussian blue'], + ['rgb( 48, 69, 119)', 'Dark grey blue'], + ['rgb( 0, 71, 171)', 'Cobalt blue'], + ['rgb( 31, 117, 254)', 'Blue'], + ['rgb(120, 180, 255)', 'Bright french blue'], + ['rgb(171, 200, 255)', 'Bright steel blue'], + ['rgb(208, 231, 255)', 'Ice blue'], + ['rgb( 30, 51, 58)', 'Medium jungle green'], + ['rgb( 47, 79, 79)', 'Dark slate grey'], + ['rgb( 74, 104, 93)', 'Dark grullo green'], + ['rgb( 0, 128, 128)', 'Teal'], + ['rgb( 67, 170, 176)', 'Turquoise'], + ['rgb(109, 174, 199)', 'Cerulean frost'], + ['rgb(173, 217, 186)', 'Tiffany green'], + ['rgb( 22, 34, 29)', 'Gray-asparagus'], + ['rgb( 36, 48, 45)', 'Medium dark teal'], + ['rgb( 74, 104, 93)', 'Xanadu'], + ['rgb(119, 198, 121)', 'Mint'], + ['rgb(175, 205, 182)', 'Timberwolf'], + ['rgb(185, 245, 246)', 'Celeste'], + ['rgb(193, 255, 234)', 'Aquamarine'], + ['rgb( 29, 52, 35)', 'Cal Poly Pomona'], + ['rgb( 1, 68, 33)', 'Forest green'], + ['rgb( 42, 128, 0)', 'Napier green'], + ['rgb(128, 128, 0)', 'Olive'], + ['rgb( 65, 156, 105)', 'Sea green'], + ['rgb(189, 246, 29)', 'Green-yellow'], + ['rgb(231, 244, 134)', 'Bright chartreuse'], + ['rgb(138, 23, 137)', 'Purple'], + ['rgb( 78, 39, 138)', 'Violet'], + ['rgb(193, 75, 110)', 'Dark thulian pink'], + ['rgb(222, 49, 99)', 'Cerise'], + ['rgb(255, 20, 147)', 'Deep pink'], + ['rgb(255, 102, 204)', 'Rose pink'], + ['rgb(255, 203, 219)', 'Pink'], + ['rgb(255, 255, 255)', 'White'], + ['rgb(229, 17, 1)', 'RGB Red'], + ['rgb( 0, 255, 0)', 'RGB Green'], + ['rgb( 0, 0, 255)', 'RGB Blue'], + ['rgb( 0, 255, 255)', 'CMYK Cyan'], + ['rgb(255, 0, 255)', 'CMYK Magenta'], + ['rgb(255, 255, 0)', 'CMYK Yellow'], +]; + +// re-arrange to the right order for display +let palReordered = []; +for (let row = 0; row < 7; row++) { + for (let col = 0; col < 11; col++) { + palReordered.push(palette[col * 7 + row]); + } + palReordered.push(null); // null indicates a <br /> +} + +// Utility for converting base64 image to binary for upload +// https://stackoverflow.com/questions/35940290/how-to-convert-base64-string-to-javascript-file-object-like-as-from-file-input-f +function dataURLtoFile(dataurl, filename) { + let arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1], + bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n); + while(n--){ + u8arr[n] = bstr.charCodeAt(n); + } + return new File([u8arr], filename, { type: mime }); +} +/** Doodle canvas size options */ +const DOODLE_SIZES = { + normal: [500, 500, 'Square 500'], + tootbanner: [702, 330, 'Tootbanner'], + s640x480: [640, 480, '640×480 - 480p'], + s800x600: [800, 600, '800×600 - SVGA'], + s720x480: [720, 405, '720x405 - 16:9'], +}; + + +const mapStateToProps = state => ({ + options: state.getIn(['compose', 'doodle']), +}); + +const mapDispatchToProps = dispatch => ({ + /** Set options in the redux store */ + setOpt: (opts) => dispatch(doodleSet(opts)), + /** Submit doodle for upload */ + submit: (file) => dispatch(uploadCompose([file])), +}); + +/** + * Doodling dialog with drawing canvas + * + * Keyboard shortcuts: + * - Delete: Clear screen, fill with background color + * - Backspace, Ctrl+Z: Undo one step + * - Ctrl held while drawing: Use background color + * - Shift held while clicking screen: Use fill tool + * + * Palette: + * - Left mouse button: pick foreground + * - Ctrl + left mouse button: pick background + * - Right mouse button: pick background + */ +class DoodleModal extends ImmutablePureComponent { + + static propTypes = { + options: ImmutablePropTypes.map, + onClose: PropTypes.func.isRequired, + setOpt: PropTypes.func.isRequired, + submit: PropTypes.func.isRequired, + }; + + //region Option getters/setters + + /** Foreground color */ + get fg () { + return this.props.options.get('fg'); + } + set fg (value) { + this.props.setOpt({ fg: value }); + } + + /** Background color */ + get bg () { + return this.props.options.get('bg'); + } + set bg (value) { + this.props.setOpt({ bg: value }); + } + + /** Swap Fg and Bg for drawing */ + get swapped () { + return this.props.options.get('swapped'); + } + set swapped (value) { + this.props.setOpt({ swapped: value }); + } + + /** Mode - 'draw' or 'fill' */ + get mode () { + return this.props.options.get('mode'); + } + set mode (value) { + this.props.setOpt({ mode: value }); + } + + /** Base line weight */ + get weight () { + return this.props.options.get('weight'); + } + set weight (value) { + this.props.setOpt({ weight: value }); + } + + /** Drawing opacity */ + get opacity () { + return this.props.options.get('opacity'); + } + set opacity (value) { + this.props.setOpt({ opacity: value }); + } + + /** Adaptive stroke - change width with speed */ + get adaptiveStroke () { + return this.props.options.get('adaptiveStroke'); + } + set adaptiveStroke (value) { + this.props.setOpt({ adaptiveStroke: value }); + } + + /** Smoothing (for mouse drawing) */ + get smoothing () { + return this.props.options.get('smoothing'); + } + set smoothing (value) { + this.props.setOpt({ smoothing: value }); + } + + /** Size preset */ + get size () { + return this.props.options.get('size'); + } + set size (value) { + this.props.setOpt({ size: value }); + } + + //endregion + + /** Key up handler */ + handleKeyUp = (e) => { + if (e.target.nodeName === 'INPUT') return; + + if (e.key === 'Delete') { + e.preventDefault(); + this.handleClearBtn(); + return; + } + + if (e.key === 'Backspace' || (e.key === 'z' && (e.ctrlKey || e.metaKey))) { + e.preventDefault(); + this.undo(); + } + + if (e.key === 'Control' || e.key === 'Meta') { + this.controlHeld = false; + this.swapped = false; + } + + if (e.key === 'Shift') { + this.shiftHeld = false; + this.mode = 'draw'; + } + }; + + /** Key down handler */ + handleKeyDown = (e) => { + if (e.key === 'Control' || e.key === 'Meta') { + this.controlHeld = true; + this.swapped = true; + } + + if (e.key === 'Shift') { + this.shiftHeld = true; + this.mode = 'fill'; + } + }; + + /** + * Component installed in the DOM, do some initial set-up + */ + componentDidMount () { + this.controlHeld = false; + this.shiftHeld = false; + this.swapped = false; + window.addEventListener('keyup', this.handleKeyUp, false); + window.addEventListener('keydown', this.handleKeyDown, false); + } + + /** + * Tear component down + */ + componentWillUnmount () { + window.removeEventListener('keyup', this.handleKeyUp, false); + window.removeEventListener('keydown', this.handleKeyDown, false); + if (this.sketcher) this.sketcher.destroy(); + } + + /** + * Set reference to the canvas element. + * This is called during component init + * + * @param elem - canvas element + */ + setCanvasRef = (elem) => { + this.canvas = elem; + if (elem) { + elem.addEventListener('dirty', () => { + this.saveUndo(); + this.sketcher._dirty = false; + }); + + elem.addEventListener('click', () => { + // sketcher bug - does not fire dirty on fill + if (this.mode === 'fill') { + this.saveUndo(); + } + }); + + // prevent context menu + elem.addEventListener('contextmenu', (e) => { + e.preventDefault(); + }); + + elem.addEventListener('mousedown', (e) => { + if (e.button === 2) { + this.swapped = true; + } + }); + + elem.addEventListener('mouseup', (e) => { + if (e.button === 2) { + this.swapped = this.controlHeld; + } + }); + + this.initSketcher(elem); + this.mode = 'draw'; // Reset mode - it's confusing if left at 'fill' + } + }; + + /** + * Set up the sketcher instance + * + * @param canvas - canvas element. Null if we're just resizing + */ + initSketcher (canvas = null) { + const sizepreset = DOODLE_SIZES[this.size]; + + if (this.sketcher) this.sketcher.destroy(); + this.sketcher = new Atrament(canvas || this.canvas, sizepreset[0], sizepreset[1]); + + if (canvas) { + this.ctx = this.sketcher.context; + this.updateSketcherSettings(); + } + + this.clearScreen(); + } + + /** + * Done button handler + */ + onDoneButton = () => { + const dataUrl = this.sketcher.toImage(); + const file = dataURLtoFile(dataUrl, 'doodle.png'); + this.props.submit(file); + this.props.onClose(); // close dialog + }; + + /** + * Cancel button handler + */ + onCancelButton = () => { + if (this.undos.length > 1 && !confirm('Discard doodle? All changes will be lost!')) { + return; + } + + this.props.onClose(); // close dialog + }; + + /** + * Update sketcher options based on state + */ + updateSketcherSettings () { + if (!this.sketcher) return; + + if (this.oldSize !== this.size) this.initSketcher(); + + this.sketcher.color = (this.swapped ? this.bg : this.fg); + this.sketcher.opacity = this.opacity; + this.sketcher.weight = this.weight; + this.sketcher.mode = this.mode; + this.sketcher.smoothing = this.smoothing; + this.sketcher.adaptiveStroke = this.adaptiveStroke; + + this.oldSize = this.size; + } + + /** + * Fill screen with background color + */ + clearScreen = () => { + this.ctx.fillStyle = this.bg; + this.ctx.fillRect(-1, -1, this.canvas.width+2, this.canvas.height+2); + this.undos = []; + + this.doSaveUndo(); + }; + + /** + * Undo one step + */ + undo = () => { + if (this.undos.length > 1) { + this.undos.pop(); + const buf = this.undos.pop(); + + this.sketcher.clear(); + this.ctx.putImageData(buf, 0, 0); + this.doSaveUndo(); + } + }; + + /** + * Save canvas content into the undo buffer immediately + */ + doSaveUndo = () => { + this.undos.push(this.ctx.getImageData(0, 0, this.canvas.width, this.canvas.height)); + }; + + /** + * Called on each canvas change. + * Saves canvas content to the undo buffer after some period of inactivity. + */ + saveUndo = debounce(() => { + this.doSaveUndo(); + }, 100); + + /** + * Palette left click. + * Selects Fg color (or Bg, if Control/Meta is held) + * + * @param e - event + */ + onPaletteClick = (e) => { + const c = e.target.dataset.color; + + if (this.controlHeld) { + this.bg = c; + } else { + this.fg = c; + } + + e.target.blur(); + e.preventDefault(); + }; + + /** + * Palette right click. + * Selects Bg color + * + * @param e - event + */ + onPaletteRClick = (e) => { + this.bg = e.target.dataset.color; + e.target.blur(); + e.preventDefault(); + }; + + /** + * Handle click on the Draw mode button + * + * @param e - event + */ + setModeDraw = (e) => { + this.mode = 'draw'; + e.target.blur(); + }; + + /** + * Handle click on the Fill mode button + * + * @param e - event + */ + setModeFill = (e) => { + this.mode = 'fill'; + e.target.blur(); + }; + + /** + * Handle click on Smooth checkbox + * + * @param e - event + */ + tglSmooth = (e) => { + this.smoothing = !this.smoothing; + e.target.blur(); + }; + + /** + * Handle click on Adaptive checkbox + * + * @param e - event + */ + tglAdaptive = (e) => { + this.adaptiveStroke = !this.adaptiveStroke; + e.target.blur(); + }; + + /** + * Handle change of the Weight input field + * + * @param e - event + */ + setWeight = (e) => { + this.weight = +e.target.value || 1; + }; + + /** + * Set size - clalback from the select box + * + * @param e - event + */ + changeSize = (e) => { + let newSize = e.target.value; + if (newSize === this.oldSize) return; + + if (this.undos.length > 1 && !confirm('Change canvas size? This will erase your current drawing!')) { + return; + } + + this.size = newSize; + }; + + handleClearBtn = () => { + if (this.undos.length > 1 && !confirm('Clear canvas? This will erase your current drawing!')) { + return; + } + + this.clearScreen(); + }; + + /** + * Render the component + */ + render () { + this.updateSketcherSettings(); + + 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> + ); + } + +} + +export default connect(mapStateToProps, mapDispatchToProps)(DoodleModal); |