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 Collapsable from '../../../components/collapsable';
 import SpoilerButtonContainer from '../containers/spoiler_button_container';
@@ -249,6 +250,7 @@ export default class ComposeForm extends ImmutablePureComponent {
         <div className='compose-form__buttons-wrapper'>
           <div className='compose-form__buttons'>
             <UploadButtonContainer />
+            <DoodleButtonContainer />
             <PrivacyDropdownContainer />
             <ComposeAdvancedOptionsContainer />
             <SensitiveButtonContainer />

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>
+    );
+  }
+
+}