From ef859e16e88004a215b725878449683e455ad8ee Mon Sep 17 00:00:00 2001
From: chr <chr@cybre.space>
Date: Mon, 12 Nov 2018 21:48:32 -0800
Subject: [PATCH] Doodlebox
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

A modification to the Mastodon interface that allows you to select a
doodle icon in addition to uploading a media file from your computer.
The doodle interface allows you to draw using your mouse, finger, or
pointing device in several colors. It was originally developed by
Ondřej Hruška <ondra@ondrovo.com> for use on the GlitchSoc fork.
---
 app/javascript/mastodon/actions/compose.js    |   9 +
 .../mastodon/components/icon_button.js        |  12 +-
 .../compose/components/attach_options.js      | 133 ++++
 .../compose/components/compose_dropdown.js    |  76 +++
 .../compose/components/compose_form.js        |   7 +-
 .../features/ui/components/doodle_modal.js    | 614 ++++++++++++++++++
 .../features/ui/components/modal_root.js      |  14 +-
 app/javascript/mastodon/reducers/compose.js   |  14 +
 app/javascript/styles/doodle.scss             |  96 +++
 .../styles/mastodon/components.scss           |  74 ++-
 package.json                                  |   1 +
 yarn.lock                                     |   4 +
 12 files changed, 1046 insertions(+), 8 deletions(-)
 create mode 100644 app/javascript/mastodon/features/compose/components/attach_options.js
 create mode 100644 app/javascript/mastodon/features/compose/components/compose_dropdown.js
 create mode 100644 app/javascript/mastodon/features/ui/components/doodle_modal.js
 create mode 100644 app/javascript/styles/doodle.scss

diff --git a/app/javascript/mastodon/actions/compose.js b/app/javascript/mastodon/actions/compose.js
index a4352faab..7dcc2d8e2 100644
--- a/app/javascript/mastodon/actions/compose.js
+++ b/app/javascript/mastodon/actions/compose.js
@@ -49,6 +49,8 @@ export const COMPOSE_UPLOAD_CHANGE_REQUEST     = 'COMPOSE_UPLOAD_UPDATE_REQUEST'
 export const COMPOSE_UPLOAD_CHANGE_SUCCESS     = 'COMPOSE_UPLOAD_UPDATE_SUCCESS';
 export const COMPOSE_UPLOAD_CHANGE_FAIL        = 'COMPOSE_UPLOAD_UPDATE_FAIL';
 
+export const COMPOSE_DOODLE_SET        = 'COMPOSE_DOODLE_SET';
+
 export function changeCompose(text) {
   return {
     type: COMPOSE_CHANGE,
@@ -182,6 +184,13 @@ export function submitComposeFail(error) {
   };
 };
 
+export function doodleSet(options) {
+  return {
+    type: COMPOSE_DOODLE_SET,
+    options: options,
+  };
+};
+
 export function uploadCompose(files) {
   return function (dispatch, getState) {
     if (getState().getIn(['compose', 'media_attachments']).size > 3) {
diff --git a/app/javascript/mastodon/components/icon_button.js b/app/javascript/mastodon/components/icon_button.js
index b96e48fd0..94e0dd86a 100644
--- a/app/javascript/mastodon/components/icon_button.js
+++ b/app/javascript/mastodon/components/icon_button.js
@@ -22,6 +22,7 @@ export default class IconButton extends React.PureComponent {
     animate: PropTypes.bool,
     overlay: PropTypes.bool,
     tabIndex: PropTypes.string,
+    label: PropTypes.string,
   };
 
   static defaultProps = {
@@ -42,14 +43,18 @@ export default class IconButton extends React.PureComponent {
   }
 
   render () {
-    const style = {
+    let style = {
       fontSize: `${this.props.size}px`,
-      width: `${this.props.size * 1.28571429}px`,
       height: `${this.props.size * 1.28571429}px`,
       lineHeight: `${this.props.size}px`,
       ...this.props.style,
       ...(this.props.active ? this.props.activeStyle : {}),
     };
+    if (!this.props.label) {
+      style.width = `${this.props.size * 1.28571429}px`;
+    } else {
+      style.textAlign = 'left';
+    }
 
     const {
       active,
@@ -104,7 +109,8 @@ export default class IconButton extends React.PureComponent {
             style={style}
             tabIndex={tabIndex}
           >
-            <i style={{ transform: `rotate(${rotate}deg)` }} className={`fa fa-fw fa-${icon}`} aria-hidden='true' />
+            <i style={{ transform: `rotate(${rotate}deg)` }} className={`fa fa-fw fa-${this.props.icon}`} aria-hidden='true' />
+            {this.props.label}
           </button>
         )}
       </Motion>
diff --git a/app/javascript/mastodon/features/compose/components/attach_options.js b/app/javascript/mastodon/features/compose/components/attach_options.js
new file mode 100644
index 000000000..1a26087e7
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/attach_options.js
@@ -0,0 +1,133 @@
+//  Package imports  // 
+import React from 'react'; 
+import PropTypes from 'prop-types'; 
+import { connect } from 'react-redux'; 
+import { injectIntl, defineMessages } from 'react-intl'; 
+ 
+//  Our imports  // 
+import ComposeDropdown from './compose_dropdown'; 
+import { uploadCompose } from '../../../actions/compose'; 
+import ImmutablePropTypes from 'react-immutable-proptypes'; 
+import ImmutablePureComponent from 'react-immutable-pure-component'; 
+import { openModal } from '../../../actions/modal'; 
+ 
+//  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
+ 
+const messages = defineMessages({ 
+  upload : 
+    { id: 'compose.attach.upload', defaultMessage: 'Upload a file' }, 
+  doodle : 
+    { id: 'compose.attach.doodle', defaultMessage: 'Draw something' }, 
+  attach : 
+    { id: 'compose.attach', defaultMessage: 'Attach...' }, 
+}); 
+ 
+const mapStateToProps = state => ({ 
+  // This horrible expression is copied from vanilla upload_button_container 
+  disabled: state.getIn(['compose', 'is_uploading']) || (state.getIn(['compose', 'media_attachments']).size > 3 || state.getIn(['compose', 'media_attachments']).some(m => m.get('type') === 'video')), 
+  resetFileKey: state.getIn(['compose', 'resetFileKey']), 
+  acceptContentTypes: state.getIn(['media_attachments', 'accept_content_types']), 
+}); 
+ 
+const mapDispatchToProps = dispatch => ({ 
+  onSelectFile (files) { 
+    dispatch(uploadCompose(files)); 
+  }, 
+  onOpenDoodle () { 
+    dispatch(openModal('DOODLE', { noEsc: true })); 
+  }, 
+}); 
+ 
+@injectIntl 
+@connect(mapStateToProps, mapDispatchToProps) 
+export default class ComposeAttachOptions extends ImmutablePureComponent { 
+ 
+  static propTypes = { 
+    intl     : PropTypes.object.isRequired, 
+    resetFileKey: PropTypes.number, 
+    acceptContentTypes: ImmutablePropTypes.listOf(PropTypes.string).isRequired, 
+    disabled: PropTypes.bool, 
+    onSelectFile: PropTypes.func.isRequired, 
+    onOpenDoodle: PropTypes.func.isRequired, 
+  }; 
+ 
+  handleItemClick = bt => { 
+    if (bt === 'upload') { 
+      this.fileElement.click(); 
+    } 
+ 
+    if (bt === 'doodle') { 
+      this.props.onOpenDoodle(); 
+    } 
+ 
+    this.dropdown.setState({ open: false }); 
+  }; 
+ 
+  handleFileChange = (e) => { 
+    if (e.target.files.length > 0) { 
+      this.props.onSelectFile(e.target.files); 
+    } 
+  } 
+ 
+  setFileRef = (c) => { 
+    this.fileElement = c; 
+  } 
+ 
+  setDropdownRef = (c) => { 
+    this.dropdown = c; 
+  } 
+ 
+  render () { 
+    const { intl, resetFileKey, disabled, acceptContentTypes } = this.props; 
+ 
+    const options = [ 
+      { icon: 'cloud-upload', text: messages.upload, name: 'upload' }, 
+      { icon: 'paint-brush', text: messages.doodle, name: 'doodle' }, 
+    ]; 
+ 
+    const optionElems = options.map((item) => { 
+      const hdl = () => this.handleItemClick(item.name); 
+      return ( 
+        <div 
+          role='button' 
+          tabIndex='0' 
+          key={item.name} 
+          onClick={hdl} 
+          className='privacy-dropdown__option' 
+        > 
+          <div className='privacy-dropdown__option__icon'> 
+            <i className={`fa fa-fw fa-${item.icon}`} /> 
+          </div> 
+ 
+          <div className='privacy-dropdown__option__content'> 
+            <strong>{intl.formatMessage(item.text)}</strong> 
+          </div> 
+        </div> 
+      ); 
+    }); 
+ 
+    return ( 
+      <div> 
+        <ComposeDropdown 
+          title={intl.formatMessage(messages.attach)} 
+          icon='paperclip' 
+          disabled={disabled} 
+          ref={this.setDropdownRef} 
+        > 
+          {optionElems} 
+        </ComposeDropdown> 
+        <input 
+          key={resetFileKey} 
+          ref={this.setFileRef} 
+          type='file' 
+          multiple={false} 
+          accept={acceptContentTypes.toArray().join(',')} 
+          onChange={this.handleFileChange} 
+          disabled={disabled} 
+          style={{ display: 'none' }} 
+        /> 
+      </div> 
+    ); 
+  } 
+ 
+} 
diff --git a/app/javascript/mastodon/features/compose/components/compose_dropdown.js b/app/javascript/mastodon/features/compose/components/compose_dropdown.js
new file mode 100644
index 000000000..3158f32d4
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/compose_dropdown.js
@@ -0,0 +1,76 @@
+//  Package imports  // 
+import React from 'react'; 
+import PropTypes from 'prop-types'; 
+ 
+//  Mastodon imports  // 
+import IconButton from '../../../components/icon_button'; 
+ 
+const iconStyle = { 
+  height     : null, 
+  lineHeight : '27px', 
+}; 
+ 
+export default class ComposeDropdown extends React.PureComponent {
+ 
+  static propTypes = { 
+    title: PropTypes.string.isRequired, 
+    icon: PropTypes.string, 
+    highlight: PropTypes.bool, 
+    disabled: PropTypes.bool, 
+    children: PropTypes.arrayOf(PropTypes.node).isRequired, 
+  }; 
+ 
+  state = { 
+    open: false, 
+  }; 
+ 
+  onGlobalClick = (e) => { 
+    if (e.target !== this.node && !this.node.contains(e.target) && this.state.open) { 
+      this.setState({ open: false }); 
+    } 
+  }; 
+ 
+  componentDidMount () { 
+    window.addEventListener('click', this.onGlobalClick); 
+    window.addEventListener('touchstart', this.onGlobalClick); 
+  } 
+  componentWillUnmount () { 
+    window.removeEventListener('click', this.onGlobalClick); 
+    window.removeEventListener('touchstart', this.onGlobalClick); 
+  } 
+ 
+  onToggleDropdown = () => { 
+    if (this.props.disabled) return; 
+    this.setState({ open: !this.state.open }); 
+  }; 
+ 
+  setRef = (c) => { 
+    this.node = c; 
+  }; 
+ 
+  render () { 
+    const { open } = this.state; 
+    let { highlight, title, icon, disabled } = this.props; 
+ 
+    if (!icon) icon = 'ellipsis-h'; 
+ 
+    return ( 
+      <div ref={this.setRef} className={`advanced-options-dropdown ${open ?  'open' : ''} ${highlight ? 'active' : ''} `}> 
+        <div className='advanced-options-dropdown__value'> 
+          <IconButton 
+            className={'inverted'} 
+            title={title} 
+            icon={icon} active={open || highlight} 
+            size={18} 
+            style={iconStyle} 
+            disabled={disabled} 
+            onClick={this.onToggleDropdown} 
+          /> 
+        </div> 
+        <div className='advanced-options-dropdown__dropdown'> 
+          {this.props.children} 
+        </div> 
+      </div> 
+    ); 
+  }
+}
diff --git a/app/javascript/mastodon/features/compose/components/compose_form.js b/app/javascript/mastodon/features/compose/components/compose_form.js
index ac458fd25..c48064055 100644
--- a/app/javascript/mastodon/features/compose/components/compose_form.js
+++ b/app/javascript/mastodon/features/compose/components/compose_form.js
@@ -5,7 +5,6 @@ import ImmutablePropTypes from 'react-immutable-proptypes';
 import PropTypes from 'prop-types';
 import ReplyIndicatorContainer from '../containers/reply_indicator_container';
 import AutosuggestTextarea from '../../../components/autosuggest_textarea';
-import UploadButtonContainer from '../containers/upload_button_container';
 import { defineMessages, injectIntl } from 'react-intl';
 import SpoilerButtonContainer from '../containers/spoiler_button_container';
 import PrivacyDropdownContainer from '../containers/privacy_dropdown_container';
@@ -17,6 +16,7 @@ import { isMobile } from '../../../is_mobile';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 import { length } from 'stringz';
 import { countableText } from '../util/counter';
+import ComposeAttachOptions from './attach_options';
 
 const allowedAroundShortCode = '><\u0085\u0020\u00a0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029\u0009\u000a\u000b\u000c\u000d';
 
@@ -208,9 +208,10 @@ class ComposeForm extends ImmutablePureComponent {
 
         <div className='compose-form__buttons-wrapper'>
           <div className='compose-form__buttons'>
-            <UploadButtonContainer />
-            <PrivacyDropdownContainer />
+            <ComposeAttachOptions />
             <SensitiveButtonContainer />
+            <div className='compose-form__buttons-separator' /> 
+            <PrivacyDropdownContainer />
             <SpoilerButtonContainer />
           </div>
           <div className='character-counter__wrapper'><CharacterCounter max={500} text={text} /></div>
diff --git a/app/javascript/mastodon/features/ui/components/doodle_modal.js b/app/javascript/mastodon/features/ui/components/doodle_modal.js
new file mode 100644
index 000000000..4efc9d2e6
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/doodle_modal.js
@@ -0,0 +1,614 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import Button from '../../../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 '../../../actions/compose';
+import IconButton from '../../../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 });
+}
+
+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
+ */
+@connect(mapStateToProps, mapDispatchToProps)
+export default 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 size? This will erase your drawing!')) {
+      return;
+    }
+
+    this.size = newSize;
+  };
+
+  handleClearBtn = () => {
+    if (this.undos.length > 1 && !confirm('Clear screen? This will erase your 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>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/modal_root.js b/app/javascript/mastodon/features/ui/components/modal_root.js
index cc2ab6c8c..493dc92e7 100644
--- a/app/javascript/mastodon/features/ui/components/modal_root.js
+++ b/app/javascript/mastodon/features/ui/components/modal_root.js
@@ -8,6 +8,7 @@ import ActionsModal from './actions_modal';
 import MediaModal from './media_modal';
 import VideoModal from './video_modal';
 import BoostModal from './boost_modal';
+import DoodleModal from './doodle_modal';
 import ConfirmationModal from './confirmation_modal';
 import FocalPointModal from './focal_point_modal';
 import {
@@ -22,6 +23,7 @@ const MODAL_COMPONENTS = {
   'MEDIA': () => Promise.resolve({ default: MediaModal }),
   'VIDEO': () => Promise.resolve({ default: VideoModal }),
   'BOOST': () => Promise.resolve({ default: BoostModal }),
+  'DOODLE': () => Promise.resolve({ default: DoodleModal }),
   'CONFIRM': () => Promise.resolve({ default: ConfirmationModal }),
   'MUTE': MuteModal,
   'REPORT': ReportModal,
@@ -43,6 +45,16 @@ export default class ModalRoot extends React.PureComponent {
   getSnapshotBeforeUpdate () {
     return { visible: !!this.props.type };
   }
+  state = {
+    revealed: false,
+  };
+
+  handleKeyUp = (e) => {
+    if ((e.key === 'Escape' || e.key === 'Esc' || e.keyCode === 27)
+         && !!this.props.type && !this.props.props.noEsc) {
+      this.props.onClose();
+    }
+  }
 
   componentDidUpdate (prevProps, prevState, { visible }) {
     if (visible) {
@@ -53,7 +65,7 @@ export default class ModalRoot extends React.PureComponent {
   }
 
   renderLoading = modalId => () => {
-    return ['MEDIA', 'VIDEO', 'BOOST', 'CONFIRM', 'ACTIONS'].indexOf(modalId) === -1 ? <ModalLoading /> : null;
+    return ['MEDIA', 'VIDEO', 'BOOST', 'DOODLE', 'CONFIRM', 'ACTIONS'].indexOf(modalId) === -1 ? <ModalLoading /> : null;
   }
 
   renderError = (props) => {
diff --git a/app/javascript/mastodon/reducers/compose.js b/app/javascript/mastodon/reducers/compose.js
index 1622871b8..2c39ecf82 100644
--- a/app/javascript/mastodon/reducers/compose.js
+++ b/app/javascript/mastodon/reducers/compose.js
@@ -28,6 +28,7 @@ import {
   COMPOSE_UPLOAD_CHANGE_REQUEST,
   COMPOSE_UPLOAD_CHANGE_SUCCESS,
   COMPOSE_UPLOAD_CHANGE_FAIL,
+  COMPOSE_DOODLE_SET,
   COMPOSE_RESET,
 } from '../actions/compose';
 import { TIMELINE_DELETE } from '../actions/timelines';
@@ -62,6 +63,17 @@ const initialState = ImmutableMap({
   resetFileKey: Math.floor((Math.random() * 0x10000)),
   idempotencyKey: null,
   tagHistory: ImmutableList(),
+  doodle: ImmutableMap({
+    fg: 'rgb(  0,    0,    0)',
+    bg: 'rgb(255,  255,  255)',
+    swapped: false,
+    mode: 'draw',
+    size: 'normal',
+    weight: 2,
+    opacity: 1,
+    adaptiveStroke: true,
+    smoothing: false,
+  }),
 });
 
 function statusToTextMentions(state, status) {
@@ -330,6 +342,8 @@ export default function compose(state = initialState, action) {
         map.set('spoiler_text', '');
       }
     });
+  case COMPOSE_DOODLE_SET:
+    return state.mergeIn(['doodle'], action.options);
   default:
     return state;
   }
diff --git a/app/javascript/styles/doodle.scss b/app/javascript/styles/doodle.scss
new file mode 100644
index 000000000..8531cc85c
--- /dev/null
+++ b/app/javascript/styles/doodle.scss
@@ -0,0 +1,96 @@
+$doodleBg: #d9e1e8;
+.doodle-modal {
+  @extend .boost-modal;
+  width: unset;
+}
+
+.doodle-modal__container {
+  background: $doodleBg;
+  text-align: center;
+  line-height: 0; // remove weird gap under canvas
+  canvas {
+    border: 5px solid $doodleBg;
+  }
+}
+
+.doodle-modal__action-bar {
+  @extend .boost-modal__action-bar;
+
+  .filler {
+    flex-grow: 1;
+    margin: 0;
+    padding: 0;
+  }
+
+  .doodle-toolbar {
+    line-height: 1;
+
+    display: flex;
+    flex-direction: column;
+    flex-grow: 0;
+    justify-content: space-around;
+
+    &.with-inputs {
+      label {
+        display: inline-block;
+        width: 70px;
+        text-align: right;
+        margin-right: 2px;
+      }
+
+      input[type="number"],input[type="text"] {
+        width: 40px;
+      }
+      span.val {
+        display: inline-block;
+        text-align: left;
+        width: 50px;
+      }
+    }
+  }
+
+  .doodle-palette {
+    padding-right: 0 !important;
+    border: 1px solid black;
+    line-height: .2rem;
+    flex-grow: 0;
+    background: white;
+
+    button {
+      appearance: none;
+      width: 1rem;
+      height: 1rem;
+      margin: 0; padding: 0;
+      text-align: center;
+      color: black;
+      text-shadow: 0 0 1px white;
+      cursor: pointer;
+      box-shadow: inset 0 0 1px rgba(white, .5);
+      border: 1px solid black;
+      outline-offset:-1px;
+
+      &.foreground {
+        outline: 1px dashed white;
+      }
+
+      &.background {
+        outline: 1px dashed red;
+      }
+
+      &.foreground.background {
+        outline: 1px dashed red;
+        border-color: white;
+      }
+    }
+  }
+}
+
+.compose-form__buttons-separator { 
+  border-left: 1px solid #c3c3c3; 
+  margin: 0 3px; 
+} 
+
+.compose-form__upload-button-icon {
+  line-height: 27px;
+}
+
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index 10e094648..bf002bfe2 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -383,7 +383,6 @@
     padding: 10px;
     cursor: pointer;
     border-radius: 4px;
-
     &:hover,
     &:focus,
     &:active,
@@ -3522,6 +3521,78 @@ a.status-card.compact:hover {
   }
 }
 
+.advanced-options-dropdown {
+  position: relative;
+}
+
+.advanced-options-dropdown__dropdown {
+  display: none;
+  position: absolute;
+  left: 0;
+  top: 27px;
+  width: 210px;
+  background: $simple-background-color;
+  border-radius: 0 4px 4px;
+  z-index: 2;
+  overflow: hidden;
+}
+
+.advanced-options-dropdown__option {
+  color: $ui-base-color;
+  padding: 10px;
+  cursor: pointer;
+  display: flex;
+
+  &:hover,
+  &.active {
+    background: $ui-highlight-color;
+    color: $primary-text-color;
+
+    .advanced-options-dropdown__option__content {
+      color: $primary-text-color;
+
+      strong {
+        color: $primary-text-color;
+      }
+    }
+  }
+
+  &.active:hover {
+    background: lighten($ui-highlight-color, 4%);
+  }
+}
+
+.advanced-options-dropdown__option__toggle {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  margin-right: 10px;
+}
+
+.advanced-options-dropdown__option__content {
+  flex: 1 1 auto;
+  color: darken($ui-primary-color, 24%);
+
+  strong {
+    font-weight: 500;
+    display: block;
+    color: $ui-base-color;
+  }
+}
+
+.advanced-options-dropdown.open {
+  .advanced-options-dropdown__value {
+    background: $simple-background-color;
+    border-radius: 4px 4px 0 0;
+    box-shadow: 0 -4px 4px rgba($base-shadow-color, 0.1);
+  }
+
+  .advanced-options-dropdown__dropdown {
+    display: block;
+    box-shadow: 2px 4px 6px rgba($base-shadow-color, 0.1);
+  }
+}
+
 .search {
   position: relative;
 }
@@ -5433,3 +5504,4 @@ noscript {
     }
   }
 }
+@import 'doodle';
diff --git a/package.json b/package.json
index 5fa6fa8b7..2d7d6dc5a 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,7 @@
     "@babel/runtime": "^7.2.0",
     "@gfx/zopfli": "^1.0.10",
     "array-includes": "^3.0.3",
+    "atrament": "^0.2.3",
     "autoprefixer": "^9.4.3",
     "axios": "^0.18.0",
     "babel-core": "^7.0.0-bridge.0",
diff --git a/yarn.lock b/yarn.lock
index 9ff12a712..052d4fc43 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1272,6 +1272,10 @@ atob@^2.1.1:
   resolved "https://registry.yarnpkg.com/atob/-/atob-2.1.2.tgz#6d9517eb9e030d2436666651e86bd9f6f13533c9"
   integrity sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==
 
+atrament@^0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/atrament/-/atrament-0.2.3.tgz#6ccbc0daa6d3f25e5aeaeb31befeb78e86980348"
+
 autoprefixer@^9.4.3:
   version "9.4.3"
   resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-9.4.3.tgz#c97384a8fd80477b78049163a91bbc725d9c41d9"