improvements

allow precise setting value adjustments #1859
fix description of wheel shortcut #1883

src/components/KeyboardShortcuts.jsx

@@ -7,9 +7,11 @@ import groupBy from 'lodash/groupBy';
 import orderBy from 'lodash/orderBy';
 import uniq from 'lodash/uniq';
 
+import useUserSettings from '../hooks/useUserSettings';
 import Swal from '../swal';
 import SetCutpointButton from './SetCutpointButton';
 import SegmentCutpointButton from './SegmentCutpointButton';
+import { getModifier } from '../hooks/useTimelineScroll';
 
 
 const renderKeys = (keys) => keys.map((key, i) => (
@@ -105,13 +107,15 @@ const CreateBinding = memo(({
   );
 });
 
-const rowStyle = { display: 'flex', alignItems: 'center', margin: '6px 0' };
+const rowStyle = { display: 'flex', alignItems: 'center', margin: '.2em 0', borderBottom: '1px solid rgba(0,0,0,0.1)', paddingBottom: '.5em' };
 
 const KeyboardShortcuts = memo(({
   keyBindings, setKeyBindings, resetKeyBindings, currentCutSeg, mainActions,
 }) => {
   const { t } = useTranslation();
 
+  const { mouseWheelZoomModifierKey } = useUserSettings();
+
   const { actionsMap, extraLinesPerCategory } = useMemo(() => {
     const playbackCategory = t('Playback');
     const selectivePlaybackCategory = t('Playback/preview segments only');
@@ -136,8 +140,9 @@ const KeyboardShortcuts = memo(({
           <div key="2" style={{ ...rowStyle, alignItems: 'center' }}>
             <Text>{t('Pan timeline')}</Text>
             <div style={{ flexGrow: 1 }} />
+            {getModifier(mouseWheelZoomModifierKey).map((v) => <kbd key={v} style={{ marginRight: '.7em' }}>{v}</kbd>)}
             <FaMouse style={{ marginRight: 3 }} />
-            <Text>{t('Mouse scroll/wheel left/right')}</Text>
+            <Text>{t('Mouse scroll/wheel up/down')}</Text>
           </div>,
         ],
       },
@@ -649,7 +654,7 @@ const KeyboardShortcuts = memo(({
 
   return (
     <>
-      <div style={{ color: 'black' }}>
+      <div style={{ color: 'black', marginBottom: '1em' }}>
         <div>
           <SearchInput value={searchQuery} onChange={(e) => setSearchQuery(e.target.value)} placeholder="Search" width="100%" />
         </div>
@@ -691,7 +696,7 @@ const KeyboardShortcuts = memo(({
               );
             })}
 
-            {extraLinesPerCategory[category]}
+            {extraLinesPerCategory[category] && <div style={{ marginTop: '.8em' }}>{extraLinesPerCategory[category]}</div>}
           </div>
         ))}
       </div>

src/components/Settings.jsx

@@ -321,8 +321,8 @@ const Settings = memo(({
             <KeyCell>{t('Mouse wheel zoom modifier key')}</KeyCell>
             <td>
               <Select value={mouseWheelZoomModifierKey} onChange={(e) => setMouseWheelZoomModifierKey(e.target.value)}>
-                {Object.entries(getModifierKeyNames()).map(([key, value]) => (
-                  <option key={key} value={key}>{value}</option>
+                {Object.entries(getModifierKeyNames()).map(([key, values]) => (
+                  <option key={key} value={key}>{values.join(' / ')}</option>
                 ))}
               </Select>
             </td>

src/components/ValueTuner.jsx

@@ -1,27 +1,49 @@
-import React, { memo } from 'react';
+import React, { memo, useState, useCallback } from 'react';
 import { Button } from 'evergreen-ui';
 import { useTranslation } from 'react-i18next';
 
-const ValueTuner = memo(({ style, title, value, setValue, onFinished, resolution = 1000, min = 0, max = 1, resetToDefault }) => {
+import Switch from './Switch';
+
+
+const ValueTuner = memo(({ style, title, value, setValue, onFinished, resolution = 1000, min: minIn = 0, max: maxIn = 1, resetToDefault }) => {
   const { t } = useTranslation();
 
+  const [min, setMin] = useState(minIn);
+  const [max, setMax] = useState(maxIn);
+
   function onChange(e) {
     e.target.blur();
     setValue(Math.min(Math.max(min, ((e.target.value / resolution) * (max - min)) + min)), max);
   }
 
+  const isZoomed = !(min === minIn && max === maxIn);
+
+  const toggleZoom = useCallback(() => {
+    if (isZoomed) {
+      setMin(minIn);
+      setMax(maxIn);
+    } else {
+      const zoomWindow = (maxIn - minIn) / 100;
+      setMin(Math.max(minIn, value - zoomWindow));
+      setMax(Math.min(maxIn, value + zoomWindow));
+    }
+  }, [isZoomed, maxIn, minIn, value]);
+
   return (
     <div style={{ background: 'var(--gray1)', color: 'var(--gray12)', position: 'absolute', bottom: 0, padding: 10, margin: 10, borderRadius: 10, ...style }}>
-      <div style={{ display: 'flex', alignItems: 'center', flexBasis: 400 }}>
-        <div style={{ marginBottom: '.5em' }}>{title}</div>
-        <div style={{ marginLeft: 10, fontWeight: 'bold' }}>{value.toFixed(2)}</div>
-        <div style={{ flexGrow: 1, flexBasis: 10 }} />
-        <Button height={20} onClick={resetToDefault}>{t('Default')}</Button>
-        <Button height={20} intent="success" onClick={onFinished}>{t('Done')}</Button>
+      <div style={{ display: 'flex', alignItems: 'center', flexBasis: 400, marginBottom: '.2em' }}>
+        <div>{title}</div>
+        <div style={{ marginLeft: '.5em', fontWeight: 'bold', marginRight: '.5em', textDecoration: 'underline' }}>{value.toFixed(4)}</div>
+        <Switch checked={isZoomed} onCheckedChange={toggleZoom} style={{ flexShrink: 0 }} /><span style={{ marginLeft: '.3em' }}>{t('Precise')}</span>
+      </div>
+
+      <div style={{ marginBottom: '.3em' }}>
+        <input style={{ width: '100%' }} type="range" min="0" max="1000" step="1" value={((value - min) / (max - min)) * resolution} onChange={onChange} />
       </div>
 
-      <div style={{ display: 'flex' }}>
-        <input style={{ flexGrow: 1 }} type="range" min="0" max="1000" step="1" value={((value - min) / (max - min)) * resolution} onChange={onChange} />
+      <div style={{ textAlign: 'right' }}>
+        <Button height={20} onClick={resetToDefault}>{t('Default')}</Button>
+        <Button height={20} intent="success" onClick={onFinished}>{t('Done')}</Button>
       </div>
     </div>
   );

src/components/ValueTuners.jsx

@@ -14,6 +14,8 @@ const ValueTuners = memo(({ type, onFinished }) => {
       title: t('Timeline trackpad/wheel sensitivity'),
       value: wheelSensitivity,
       setValue: setWheelSensitivity,
+      min: 0,
+      max: 4,
       default: 0.2,
     },
     keyboardNormalSeekSpeed: {

src/hooks/useTimelineScroll.js

@@ -11,12 +11,14 @@ export const keyMap = {
 };
 
 export const getModifierKeyNames = () => ({
-  ctrl: t('Ctrl'),
-  shift: t('Shift'),
-  alt: t('Alt'),
-  meta: t('⌘ Cmd / ⊞ Win'),
+  ctrl: [t('Ctrl')],
+  shift: [t('Shift')],
+  alt: [t('Alt')],
+  meta: [t('⌘ Cmd'), t('⊞ Win')],
 });
 
+export const getModifier = (key) => getModifierKeyNames()[key];
+
 function useTimelineScroll({ wheelSensitivity, mouseWheelZoomModifierKey, invertTimelineScroll, zoomRel, seekRel }) {
   const onWheel = useCallback((e) => {
     const { pixelX, pixelY } = normalizeWheel(e);