Initial doodle support

app/javascript/mastodon/features/compose/components/compose_form.js

@@ -6,6 +6,7 @@ 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 DoodleButtonContainer from '../containers/doodle_button_container';
 import { defineMessages, injectIntl } from 'react-intl';
 import SpoilerButtonContainer from '../containers/spoiler_button_container';
 import PrivacyDropdownContainer from '../containers/privacy_dropdown_container';
@@ -204,6 +205,7 @@ export default class ComposeForm extends ImmutablePureComponent {
         <div className='compose-form__buttons-wrapper'>
           <div className='compose-form__buttons'>
             <UploadButtonContainer />
+            <DoodleButtonContainer />
             <PrivacyDropdownContainer />
             <SensitiveButtonContainer />
             <SpoilerButtonContainer />

app/javascript/mastodon/features/compose/components/doodle_button.js

@@ -0,0 +1,41 @@
+import React from 'react';
+import IconButton from '../../../components/icon_button';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const messages = defineMessages({
+  doodle: { id: 'doodle_button.label', defaultMessage: 'Add a drawing' },
+});
+
+const iconStyle = {
+  height: null,
+  lineHeight: '27px',
+};
+
+@injectIntl
+export default class UploadButton extends ImmutablePureComponent {
+
+  static propTypes = {
+    disabled: PropTypes.bool,
+    onOpenCanvas: PropTypes.func.isRequired,
+    style: PropTypes.object,
+    intl: PropTypes.object.isRequired,
+  };
+
+  handleClick = () => {
+    this.props.onOpenCanvas();
+  }
+
+  render () {
+
+    const { intl, disabled } = this.props;
+
+    return (
+      <div className='compose-form__upload-button'>
+        <IconButton icon='pencil' title={intl.formatMessage(messages.doodle)} disabled={disabled} onClick={this.handleClick} className='compose-form__upload-button-icon' size={18} inverted style={iconStyle} />
+      </div>
+    );
+  }
+
+}

app/javascript/mastodon/features/compose/containers/doodle_button_container.js

@@ -0,0 +1,33 @@
+import { connect } from 'react-redux';
+import DoodleButton from '../components/doodle_button';
+import { openModal } from '../../../actions/modal';
+import { uploadCompose } from '../../../actions/compose';
+
+const mapStateToProps = state => ({
+  disabled: state.getIn(['compose', 'is_uploading']) || (state.getIn(['compose', 'media_attachments']).size > 3 || state.getIn(['compose', 'media_attachments']).some(m => m.get('type') === 'video')),
+});
+
+//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 mapDispatchToProps = dispatch => ({
+
+  onOpenCanvas () {
+    dispatch(openModal('DOODLE', {
+      status,
+      onDoodleSubmit: (b64data) => {
+        dispatch(uploadCompose([dataURLtoFile(b64data, 'doodle.png')]));
+      },
+    }));
+  },
+
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(DoodleButton);

app/javascript/mastodon/features/ui/components/doodle_modal.js

@@ -0,0 +1,65 @@
+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
+
+export default class DoodleModal extends ImmutablePureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    onDoodleSubmit: PropTypes.func.isRequired, // gets the base64 as argument
+    onClose: PropTypes.func.isRequired,
+  };
+
+  handleKeyUp = (e) => {
+    if (e.key === 'Delete' || e.key === 'Backspace') {
+      this.sketcher.clear();
+    }
+  }
+
+  componentDidMount () {
+    window.addEventListener('keyup', this.handleKeyUp, false);
+  }
+
+  handleDone = () => {
+    this.props.onDoodleSubmit(this.sketcher.toImage());
+    this.sketcher.destroy();
+    this.props.onClose();
+  }
+
+  setCanvasRef = (elem) => {
+    this.canvas = elem;
+    if (elem) {
+      this.sketcher = new Atrament(elem, 500, 500, 'black');
+
+      // pre-fill with white
+      this.sketcher.context.fillStyle = 'white';
+      this.sketcher.context.fillRect(0, 0, elem.width, elem.height);
+
+      // .smoothing looks good with mouse but works really poorly with a tablet
+      this.sketcher.smoothing = false;
+
+      // There's a bunch of options we should add UI controls for later
+      // ref: https://github.com/jakubfiala/atrament.js
+    }
+  }
+
+  render () {
+    return (
+      <div className='modal-root__modal doodle-modal'>
+        <div className='doodle-modal__container'>
+          <canvas ref={this.setCanvasRef} />
+        </div>
+
+        <div className='doodle-modal__action-bar'>
+          <Button text='Done' onClick={this.handleDone} />
+        </div>
+      </div>
+    );
+  }
+
+}

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 {
@@ -23,6 +24,7 @@ const MODAL_COMPONENTS = {
   'ONBOARDING': OnboardingModal,
   'VIDEO': () => Promise.resolve({ default: VideoModal }),
   'BOOST': () => Promise.resolve({ default: BoostModal }),
+  'DOODLE': () => Promise.resolve({ default: DoodleModal }),
   'CONFIRM': () => Promise.resolve({ default: ConfirmationModal }),
   'MUTE': MuteModal,
   'REPORT': ReportModal,
@@ -52,7 +54,7 @@ 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) => {

app/javascript/styles/mastodon/components.scss

@@ -3998,6 +3998,7 @@ a.status-card {
 }
 
 .boost-modal,
+.doodle-modal,
 .confirmation-modal,
 .report-modal,
 .actions-modal,
@@ -4030,6 +4031,10 @@ a.status-card {
   }
 }
 
+.doodle-modal {
+  width: unset;
+}
+
 .actions-modal {
   .status {
     background: $white;
@@ -4053,6 +4058,7 @@ a.status-card {
   }
 }
 
+.doodle-modal__action-bar,
 .boost-modal__action-bar,
 .confirmation-modal__action-bar,
 .mute-modal__action-bar {

package.json

@@ -21,6 +21,7 @@
   "private": true,
   "dependencies": {
     "array-includes": "^3.0.3",
+    "atrament": "^0.2.3",
     "autoprefixer": "^7.1.6",
     "axios": "~0.16.2",
     "babel-core": "^6.25.0",

yarn.lock

@@ -443,6 +443,10 @@ atob@~1.1.0:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/atob/-/atob-1.1.3.tgz#95f13629b12c3a51a5d215abdce2aa9f32f80773"
 
+atrament@^0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/atrament/-/atrament-0.2.3.tgz#6ccbc0daa6d3f25e5aeaeb31befeb78e86980348"
+
 autoprefixer@^6.3.1:
   version "6.7.7"
   resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-6.7.7.tgz#1dbd1c835658e35ce3f9984099db00585c782014"