Add buttons and keyboard shortcuts for zoom and scroll. Add hotkey li…

…st dialog.

src/ParseqUI.js

@@ -1468,12 +1468,13 @@ const ParseqUI = (props) => {
   useHotkeys('mod+z', () => {
     undoManager.undo((recovered => setPersistableState(recovered)));
     setDebugUndoStack(undoManager.confessUndoStack());
-  }, {preventDefault:true, scopes:['main']}, [loadVersion, setPersistableState, undoManager])
+  }, {preventDefault:true, scopes:['main']}, [loadVersion, setPersistableState, undoManager]);
 
   useHotkeys('shift+mod+z', () => {
     undoManager.redo((recovered => setPersistableState(recovered)));
     setDebugUndoStack(undoManager.confessUndoStack());
-  }, {preventDefault:true, scopes:['main']}, [loadVersion, setPersistableState, undoManager])
+  }, {preventDefault:true, scopes:['main']}, [loadVersion, setPersistableState, undoManager]);
+
 
   //////////////////////////////////////////
   // Main layout

src/components/AudioWaveform.tsx

@@ -259,7 +259,17 @@ export function AudioWaveform(props: AudioWaveformProps) {
 
     useEffect(() => {
         //wavesurferRef.current?.on("dblclick", handleDoubleClick);
-        wavesurferRef.current?.drawer?.on("lick", handleClick);
+        wavesurferRef.current?.drawer?.on("click", handleClick);
+
+        //HACK - find a better place for this.
+        if (wavesurferRef.current?.drawer?.wrapper) {
+            wavesurferRef.current.drawer.wrapper.onmousemove = (e: MouseEvent) => {
+                if (e.buttons === 1 && wavesurferRef.current) {
+                    wavesurferRef.current.drawer.wrapper.scrollLeft -= e.movementX;
+                }
+            }
+        }
+
         return () => {
             //wavesurferRef.current?.un("dblclick", handleDoubleClick);
             wavesurferRef.current?.drawer?.un("click", handleClick);
@@ -326,6 +336,10 @@ export function AudioWaveform(props: AudioWaveformProps) {
             wavesurferRef.current.on("finish", (data) => {
                 setIsPlaying(false);
             });
+            wavesurferRef.current.on('drag', (relativeX) => {
+                console.log('Drag', relativeX)
+            })
+
 
             if (window) {
                 //@ts-ignore
@@ -647,17 +661,17 @@ export function AudioWaveform(props: AudioWaveformProps) {
 
     useHotkeys('space',
         () => playPause(),
-        {preventDefault:true, scopes: ['main']},
+        {preventDefault:true, scopes: ['main', 'grid']},
         [playPause]);
 
     useHotkeys('shift+space',
         () => playPause(0, false),
-        {preventDefault:true, scopes: ['main']},
+        {preventDefault:true, scopes: ['main', 'grid']},
         [playPause]);
 
     useHotkeys('ctrl+space',
         () => playPause(capturedPos, false),
-        {preventDefault:true, scopes: ['main']},
+        {preventDefault:true, scopes: ['main', 'grid']},
         [playPause, capturedPos]);    
 
     useHotkeys('shift+a', 
@@ -668,7 +682,7 @@ export function AudioWaveform(props: AudioWaveformProps) {
             //@ts-ignore
             setManualEvents(newMarkers);
         },
-        {preventDefault:true, scopes: ['main']},
+        {preventDefault:true, scopes: ['main', 'grid']},
         [manualEvents])
 
     return <>
@@ -715,6 +729,7 @@ export function AudioWaveform(props: AudioWaveformProps) {
                             minPxPerSec={10}
                             autoCenter={false}
                             interact={true}
+                            dragSelection={false}
                             cursorColor={palette.success.light}
                             // @ts-ignore - type definition is wrong?
                             waveColor={[palette.waveformStart.main, palette.waveformEnd.main]}
@@ -728,9 +743,11 @@ export function AudioWaveform(props: AudioWaveformProps) {
                 </Grid>
                 <Grid xs={12}>
                     <Stack direction="row" spacing={1} alignItems="center">
-                        <Button size="small" disabled={!wavesurferRef.current?.isReady} variant='outlined' onClick={(e) => playPause()}>
-                            {isPlaying ? "⏸️ Pause" : "▶️ Play"}
-                        </Button>
+                        <Tooltip title="Play/pause (space)">
+                            <span><Button size="small" disabled={!wavesurferRef.current?.isReady} variant='outlined' onClick={(e) => playPause()}>
+                                {isPlaying ? "⏸️ Pause" : "▶️ Play"}
+                            </Button></span>
+                        </Tooltip>
                         <Typography fontSize={"0.75em"}>{playbackPos}</Typography>
                         {/* <Button onClick={(e) => setShowSpectrogram(showSpectrogram => !showSpectrogram)} >{showSpectrogram? 'Hide' : 'Show'} spectrogram</Button> */}
                     </Stack>

src/components/Header.tsx

@@ -1,17 +1,18 @@
 import { faDiscord, faGithub } from '@fortawesome/free-brands-svg-icons';
-import { faBook, faBug, faFilm, faWaveSquare, faMoon, faLightbulb } from '@fortawesome/free-solid-svg-icons';
+import { faBook, faBug, faFilm, faWaveSquare, faMoon, faLightbulb, faKeyboard } from '@fortawesome/free-solid-svg-icons';
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
-import { Box, Chip, Link, Stack, SupportedColorScheme, Typography, useColorScheme, useMediaQuery } from '@mui/material';
+import { Box, Button, Chip, Dialog, DialogActions, DialogContent, DialogTitle, Link, Stack, SupportedColorScheme, Typography, useColorScheme, useMediaQuery } from '@mui/material';
 import Grid from '@mui/material/Unstable_Grid2';
 import { getAnalytics, isSupported } from "firebase/analytics";
 import GitInfo from 'react-git-info/macro';
 import Login from "../Login";
 import { UserAuthContextProvider } from "../UserAuthContext";
 import { app, auth } from '../firebase-config';
-import { getVersionNumber } from '../utils/utils';
+import { getVersionNumber, getModifierKey } from '../utils/utils';
 import { useLocation } from 'react-router-dom';
 import { UserSettings } from '../UserSettings';
-import { useEffect } from 'react';
+import { useEffect, useState } from 'react';
+import { KeyBadge } from './KeyBadge';
 
 var analytics: any;
 isSupported().then((isSupported) => { 
@@ -37,6 +38,8 @@ export default function Header() {
     const changeLogLink = <Link href={"https://github.com/rewbs/sd-parseq/commits/" + (GIT_BRANCH ?? '')}>all changes</Link>
     const environment = (process.env.NODE_ENV === 'development' ? 'dev' : getEnvFromHostname()) ;
 
+    const [openHotkeysDialog, setOpenHotkeysDialog] = useState(false);
+
     function getEnvFromHostname() {
         const hostname = window.location.hostname;
         if (hostname.includes('--dev')) {
@@ -74,7 +77,7 @@ export default function Header() {
     // Don't render a header in raw view.
     if (location.pathname === '/raw') {
         return <></>
-    }    
+    }
 
     return (
         <Grid container paddingLeft={5} paddingRight={5} paddingBottom={1}>
@@ -104,6 +107,10 @@ export default function Header() {
                             UserSettings.setColorScheme(newColorScheme);
                         }} 
                     /> 
+                    <Chip style={{paddingLeft:'2px'}} size='small' variant="outlined" component="a" clickable icon={<FontAwesomeIcon  size='2xs' icon={faKeyboard} />} label="Hotkeys"
+                        onClick={() => setOpenHotkeysDialog(true)}
+                    />
+
                     <Chip style={{paddingLeft:'2px'}} size='small' variant="outlined" component="a" href="https://www.youtube.com/playlist?list=PLXbx1PHKHwIHsYFfb5lq2wS8g1FKz6aP8" clickable icon={<FontAwesomeIcon  size='2xs' icon={faFilm} />} label="Tutorial" />
                     <Chip style={{paddingLeft:'2px'}} size='small' variant="outlined" component="a" href="https://github.com/rewbs/sd-parseq#readme" clickable icon={<FontAwesomeIcon size='2xs' icon={faBook} />} label="Docs" />
                     <Chip style={{paddingLeft:'2px'}} size='small' variant="outlined" component="a" href="/functionDocs" clickable icon={<FontAwesomeIcon size='2xs' icon={faWaveSquare} />} label="Reference" />
@@ -114,6 +121,33 @@ export default function Header() {
                         <Login />
                     </UserAuthContextProvider>
                 </Stack>
+                <Dialog maxWidth='md' fullWidth={true} open={openHotkeysDialog} onClose={() => setOpenHotkeysDialog(false)}>
+                    <DialogTitle><FontAwesomeIcon  size='2xs' icon={faKeyboard} /> Keyboard shortcuts</DialogTitle>
+                    <DialogContent>
+                        <h3>Editing</h3>
+                        <ul>
+                            <li><KeyBadge>{getModifierKey()}</KeyBadge>+<KeyBadge>z</KeyBadge>: Undo</li>
+                            <li><KeyBadge>{getModifierKey()}</KeyBadge>+<KeyBadge>shift</KeyBadge>+<KeyBadge>z</KeyBadge>: Undo</li>
+                        </ul>
+                        <h3>Audio playback</h3>
+                        <ul>
+                            <li><KeyBadge>space</KeyBadge>: Play/pause</li>
+                            <li><KeyBadge>shift</KeyBadge>+<KeyBadge>space</KeyBadge>: Play from start</li>
+                            <li><KeyBadge>ctrl</KeyBadge>+<KeyBadge>space</KeyBadge>: Play from cursor</li>
+                            <li><KeyBadge>ctrl</KeyBadge>+<KeyBadge>a</KeyBadge>: Add event marker at cursor position</li>
+                        </ul>
+                        <h3>Graph & audio views</h3>
+                        <ul>
+                            <li><KeyBadge>shift</KeyBadge>+<KeyBadge>↑</KeyBadge>: Zoom in</li>
+                            <li><KeyBadge>shift</KeyBadge>+<KeyBadge>↓</KeyBadge>: Zoom out</li>
+                            <li><KeyBadge>shift</KeyBadge>+<KeyBadge>←</KeyBadge>: Scroll left</li>
+                            <li><KeyBadge>shift</KeyBadge>+<KeyBadge>→</KeyBadge>: Scroll right</li>
+                        </ul>
+                        <DialogActions>
+                            <Button variant='contained' onClick={()=>setOpenHotkeysDialog(false)}>Close</Button>
+                        </DialogActions>
+                    </DialogContent>
+                </Dialog>
             </Grid>
         </Grid>
     );

src/components/ParseqGrid.tsx

@@ -8,6 +8,7 @@ import { GridTooltip } from './GridToolTip';
 import { ValueParserParams, ValueSetterParams } from 'ag-grid-community';
 import { experimental_extendTheme as extendTheme, useColorScheme } from "@mui/material/styles";
 import { themeFactory } from "../theme";
+import { useHotkeysContext } from 'react-hotkeys-hook';
 
 const config = {}
 const mathjs = create(all, config)
@@ -42,6 +43,7 @@ export const ParseqGrid = forwardRef(({ rangeSelection, onSelectRange, onGridRea
   // eslint-disable-next-line @typescript-eslint/no-unused-vars
   const {colorScheme, setColorScheme }  = useColorScheme();
 
+  const { disableScope: disableHotkeyScope, enableScope: enableHotkeyScope } = useHotkeysContext();
 
   if (!rangeSelection) {
     rangeSelection = {};
@@ -247,7 +249,17 @@ export const ParseqGrid = forwardRef(({ rangeSelection, onSelectRange, onGridRea
   }), [fps, bpm]);
 
 
-  return <div id='grid-container' className={colorScheme==='dark'?"ag-theme-alpine-dark":"ag-theme-alpine"} style={agGridStyle}>
+  return <div id='grid-container'
+    onFocus={() => {
+      disableHotkeyScope('main');
+      enableHotkeyScope('grid');
+    }}
+    onBlur={() => {
+      disableHotkeyScope('grid');
+      enableHotkeyScope('main');
+    }}      
+    className={colorScheme==='dark'?"ag-theme-alpine-dark":"ag-theme-alpine"}
+    style={agGridStyle}>
     {/* @ts-ignore  */}
     <AgGridReact
       {...agGridProps}

src/components/Viewport.tsx

@@ -1,7 +1,10 @@
-import { Typography } from "@mui/material";
+import { faArrowsLeftRightToLine, faLeftLong, faMagnifyingGlassMinus, faMagnifyingGlassPlus, faRightLong } from '@fortawesome/free-solid-svg-icons';
+import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
+import { Button, Tooltip, Typography } from "@mui/material";
 import { Stack } from "@mui/system";
 import { Timeline, TimelineEffect, TimelineRow } from "@xzdarcy/react-timeline-editor";
-import { useEffect, useRef, useState } from "react";
+import { useCallback, useEffect, useRef, useState } from "react";
+import { useHotkeys } from 'react-hotkeys-hook';
 import { frameToXAxisType } from "../utils/maths";
 
 
@@ -24,14 +27,14 @@ export function Viewport(props: ViewportProps) {
     const [timelineWidth, setTimelineWidth] = useState(600);
     const scaleWidth = timelineWidth / ((props.lastFrame * 1.1) / scale);
     const currentViewport = props.viewport;
-    const scaleSplitCount = Math.min(scale,20);
+    const scaleSplitCount = Math.min(scale, 20);
     const data: TimelineRow[] = [{
         id: 'viewport',
         actions: [
             {
                 id: 'viewport',
-                start: currentViewport?.startFrame??0,
-                end: currentViewport?.endFrame??props.lastFrame,
+                start: currentViewport?.startFrame ?? 0,
+                end: currentViewport?.endFrame ?? props.lastFrame,
                 effectId: "0",
             },
         ]
@@ -54,23 +57,72 @@ export function Viewport(props: ViewportProps) {
         return (_: any) => window.removeEventListener('resize', handleResize);
     }, []);
 
+    const zoomIn = useCallback(() => {
+        const rangeSize = currentViewport.endFrame - currentViewport.startFrame;
+        const rangeCentre = currentViewport.startFrame + rangeSize / 2;
+        const newRangeSize = (currentViewport.endFrame - currentViewport.startFrame) * 0.9;
+        props.onChange({ startFrame: Math.max(0, rangeCentre - newRangeSize / 2), endFrame: rangeCentre + newRangeSize / 2 });
+    }, [props, currentViewport]);
+
+    const zoomOut = useCallback(() => {
+        const rangeSize = currentViewport.endFrame - currentViewport.startFrame;
+        const rangeCentre = currentViewport.startFrame + rangeSize / 2;
+        const newRangeSize = (currentViewport.endFrame - currentViewport.startFrame) * 1.1;
+        props.onChange({ startFrame: Math.max(0, rangeCentre - newRangeSize / 2), endFrame: rangeCentre + newRangeSize / 2 });
+    }, [props, currentViewport]);
+
+    const scrollLeft = useCallback(() => {
+        const rangeSize = currentViewport.endFrame - currentViewport.startFrame;
+        const stepSize = rangeSize * 0.25;
+        if (currentViewport.startFrame > 0) {
+            props.onChange({ startFrame: Math.max(0, currentViewport.startFrame - stepSize), endFrame: Math.max(rangeSize, currentViewport.endFrame - stepSize) });
+        }
+    }, [props, currentViewport]);
+
+    const scrollRight = useCallback(() => {
+        const rangeSize = currentViewport.endFrame - currentViewport.startFrame;
+        const stepSize = rangeSize * 0.25;
+        props.onChange({ startFrame: currentViewport.startFrame + stepSize, endFrame: currentViewport.endFrame + stepSize });
+    }, [props, currentViewport]);
+
+    const reset = useCallback(() => {
+        currentViewport.startFrame = 0;
+        currentViewport.endFrame = props.lastFrame;
+        props.onChange({ ...currentViewport });
+    }, [props, currentViewport]);
+
+    useHotkeys('shift+up', () => {
+        zoomIn();
+    }, { preventDefault: true, scopes: ['main'] }, [zoomIn]);
+
+    useHotkeys('shift+down', () => {
+        zoomOut();
+    }, { preventDefault: true, scopes: ['main'] }, [zoomOut]);
+
+    useHotkeys('shift+left', () => {
+        scrollLeft();
+    }, { preventDefault: true, scopes: ['main'] }, [scrollLeft]);
+
+    useHotkeys('shift+right', () => {
+        scrollRight();
+    }, { preventDefault: true, scopes: ['main'] }, [scrollRight]);
 
     if (scale < 0) {
         return <></>;
-    }    
+    }
 
     return (
         <span ref={resizeRef}>
             <Timeline
-                style={{ height: '75px', width: '100%' }}
+                style={{ height: '75px', width: '100%', marginBottom: '5px' }}
                 editorData={data}
                 effects={effects}
                 scale={scale}
                 scaleWidth={scaleWidth}
                 rowHeight={15}
                 gridSnap={true}
                 maxScaleCount={1000}
-                minScaleCount={Math.max(1,timelineWidth/scale)}
+                minScaleCount={Math.max(1, timelineWidth / scale)}
                 scaleSplitCount={scaleSplitCount}
 
                 onChange={(e: any) => {
@@ -80,22 +132,21 @@ export function Viewport(props: ViewportProps) {
                     props.onChange({ ...currentViewport });
                 }}
                 hideCursor={true}
-                onDoubleClickRow={(e, {row, time}) => {
-                    currentViewport.startFrame = 0;
-                    currentViewport.endFrame = props.lastFrame;
-                    props.onChange({ ...currentViewport });
-                }}                
+                onDoubleClickRow={(e, { row, time }) => {
+                    reset();
+                }}
                 getActionRender={(action: any, row: any) => {
                     const start = frameToXAxisType(action.start, props.xaxisType, props.fps, props.bpm);
                     const end = frameToXAxisType(action.end, props.xaxisType, props.fps, props.bpm);
 
-                    return <div style={{ 
-                            borderRadius: '5px',
-                            marginTop: '1px',
-                            overflow: 'hidden',
-                            maxHeight: '15px',
-                            backgroundColor: getViewportColour(action) }}>
-
+                    return <div style={{
+                        borderRadius: '5px',
+                        marginTop: '1px',
+                        overflow: 'hidden',
+                        maxHeight: '15px',
+                        backgroundColor: getViewportColour(action)
+                    }}>
+
                         <Stack direction="row" justifyContent="space-between" paddingLeft={'5px'} paddingRight={'5px'}>
                             <Typography paddingLeft={'5px'} color={'white'} fontSize='0.7em'>{start}</Typography>
                             <Typography paddingLeft={'5px'} color={'white'} fontSize='0.7em'>{end}</Typography>
@@ -112,6 +163,15 @@ export function Viewport(props: ViewportProps) {
                     return <Typography fontSize={'0.75em'} color={colour}>{value}</Typography>
                 }}
             />
+            <Stack direction={"row"} justifyContent={'space-between'} >
+                <Tooltip title="Scroll left (shift-left)"><span><Button size='small' variant='contained' onClick={scrollLeft} disabled={currentViewport.startFrame === 0} ><FontAwesomeIcon icon={faLeftLong} /></Button></span></Tooltip>
+                <Stack direction={"row"} spacing={2}>
+                    <Tooltip title="Zoom out (shift-down)"><Button size='small' variant='contained' onClick={zoomOut}><FontAwesomeIcon icon={faMagnifyingGlassMinus} /></Button></Tooltip>
+                    <Tooltip title="Reset viewport"><Button size='small' variant='contained' onClick={reset}><FontAwesomeIcon icon={faArrowsLeftRightToLine} /></Button></Tooltip>
+                    <Tooltip title="Zoom in (shift-up)"><Button size='small' variant='contained' onClick={zoomIn}><FontAwesomeIcon icon={faMagnifyingGlassPlus} /></Button></Tooltip>
+                </Stack>
+                <Tooltip title="Scroll right (shift-right)"><Button size='small' variant='contained' onClick={scrollRight} ><FontAwesomeIcon icon={faRightLong} /></Button></Tooltip>
+            </Stack>
         </span>
     );
 

src/index.css

@@ -38,4 +38,21 @@ p {
 
 #waveform .marker-label span:hover  {
   font-size: 0.75em !important;
+}
+
+.key-badge {
+  display: inline-block;
+  padding: 3px 3px;
+  margin-top: 3px;
+  margin-right: 5px;
+  margin-left: 5px;  
+  border: 2px solid #ccc;
+  box-shadow: 1px 1px black;
+  letter-spacing: .05em;
+  border-radius: 3px;
+  background-color: #d4d4d4;
+  white-space: nowrap;
+  display: inline-block;
+  font-size: 1em;
+  line-height: .85em;
 }