add Focus segment at cursor

closes #2004

src/renderer/src/App.tsx

@@ -408,7 +408,7 @@ function App() {
   }, [detectedFps, timecodeFormat, getFrameCount]);
 
   const {
-    cutSegments, cutSegmentsHistory, createSegmentsFromKeyframes, shuffleSegments, detectBlackScenes, detectSilentScenes, detectSceneChanges, removeCutSegment, invertAllSegments, fillSegmentsGaps, combineOverlappingSegments, combineSelectedSegments, shiftAllSegmentTimes, alignSegmentTimesToKeyframes, updateSegOrder, updateSegOrders, reorderSegsByStartTime, addSegment, setCutStart, setCutEnd, onLabelSegment, splitCurrentSegment, createNumSegments, createFixedDurationSegments, createRandomSegments, apparentCutSegments, haveInvalidSegs, currentSegIndexSafe, currentCutSeg, currentApparentCutSeg, inverseCutSegments, clearSegments, loadCutSegments, isSegmentSelected, setCutTime, setCurrentSegIndex, onLabelSelectedSegments, deselectAllSegments, selectAllSegments, selectOnlyCurrentSegment, toggleCurrentSegmentSelected, invertSelectedSegments, removeSelectedSegments, setDeselectedSegmentIds, onSelectSegmentsByLabel, onSelectSegmentsByExpr, toggleSegmentSelected, selectOnlySegment, getApparentCutSegmentById, selectedSegments, selectedSegmentsOrInverse, nonFilteredSegmentsOrInverse, segmentsToExport, duplicateCurrentSegment, duplicateSegment, updateSegAtIndex,
+    cutSegments, cutSegmentsHistory, createSegmentsFromKeyframes, shuffleSegments, detectBlackScenes, detectSilentScenes, detectSceneChanges, removeCutSegment, invertAllSegments, fillSegmentsGaps, combineOverlappingSegments, combineSelectedSegments, shiftAllSegmentTimes, alignSegmentTimesToKeyframes, updateSegOrder, updateSegOrders, reorderSegsByStartTime, addSegment, setCutStart, setCutEnd, onLabelSegment, splitCurrentSegment, focusSegmentAtCursor, createNumSegments, createFixedDurationSegments, createRandomSegments, apparentCutSegments, haveInvalidSegs, currentSegIndexSafe, currentCutSeg, currentApparentCutSeg, inverseCutSegments, clearSegments, loadCutSegments, isSegmentSelected, setCutTime, setCurrentSegIndex, onLabelSelectedSegments, deselectAllSegments, selectAllSegments, selectOnlyCurrentSegment, toggleCurrentSegmentSelected, invertSelectedSegments, removeSelectedSegments, setDeselectedSegmentIds, onSelectSegmentsByLabel, onSelectSegmentsByExpr, toggleSegmentSelected, selectOnlySegment, getApparentCutSegmentById, selectedSegments, selectedSegmentsOrInverse, nonFilteredSegmentsOrInverse, segmentsToExport, duplicateCurrentSegment, duplicateSegment, updateSegAtIndex,
   } = useSegments({ filePath, workingRef, setWorking, setCutProgress, videoStream: activeVideoStream, duration, getRelevantTime, maxLabelLength, checkFileOpened, invertCutSegments, segmentsToChaptersOnly, timecodePlaceholder, parseTimecode });
 
 
@@ -2136,6 +2136,7 @@ function App() {
       setCutEnd,
       cleanupFilesDialog,
       splitCurrentSegment,
+      focusSegmentAtCursor,
       increaseRotation,
       goToTimecode,
       seekBackwards: ({ keyup }) => seekRel2({ keyup, amount: -1 * keyboardNormalSeekSpeed }),
@@ -2238,7 +2239,7 @@ function App() {
     };
 
     return ret;
-  }, [addSegment, alignSegmentTimesToKeyframes, apparentCutSegments, askStartTimeOffset, batchFileJump, batchOpenSelectedFile, captureSnapshot, captureSnapshotAsCoverArt, changePlaybackRate, checkFileOpened, cleanupFilesDialog, clearSegments, closeBatch, closeFileWithConfirm, combineOverlappingSegments, combineSelectedSegments, concatBatch, convertFormatBatch, copySegmentsToClipboard, createFixedDurationSegments, createNumSegments, createRandomSegments, createSegmentsFromKeyframes, currentSegIndexSafe, cutSegments.length, cutSegmentsHistory, deselectAllSegments, detectBlackScenes, detectSceneChanges, detectSilentScenes, duplicateCurrentSegment, editCurrentSegmentTags, extractAllStreams, extractCurrentSegmentFramesAsImages, extractSelectedSegmentsFramesAsImages, fillSegmentsGaps, goToTimecode, handleShowStreamsSelectorClick, increaseRotation, invertAllSegments, invertSelectedSegments, jumpCutEnd, jumpCutStart, jumpSeg, jumpTimelineEnd, jumpTimelineStart, keyboardNormalSeekSpeed, keyboardSeekAccFactor, keyboardSeekSpeed2, keyboardSeekSpeed3, onExportPress, onLabelSegment, openDirDialog, openFilesDialog, openSendReportDialogWithState, pause, play, removeCutSegment, removeSelectedSegments, reorderSegsByStartTime, seekClosestKeyframe, seekRel, seekRelPercent, selectAllSegments, selectOnlyCurrentSegment, setCurrentSegIndex, setCutEnd, setCutStart, setPlaybackVolume, shiftAllSegmentTimes, shortStep, showIncludeExternalStreamsDialog, shuffleSegments, splitCurrentSegment, timelineToggleComfortZoom, toggleCaptureFormat, toggleCurrentSegmentSelected, toggleFullscreenVideo, toggleKeyframeCut, toggleLastCommands, toggleLoopSelectedSegments, togglePlay, toggleSegmentsList, toggleSettings, toggleShowKeyframes, toggleShowThumbnails, toggleStreamsSelector, toggleStripAudio, toggleStripThumbnail, toggleWaveformMode, tryFixInvalidDuration, userHtml5ifyCurrentFile, zoomRel]);
+  }, [addSegment, alignSegmentTimesToKeyframes, apparentCutSegments, askStartTimeOffset, batchFileJump, batchOpenSelectedFile, captureSnapshot, captureSnapshotAsCoverArt, changePlaybackRate, checkFileOpened, cleanupFilesDialog, clearSegments, closeBatch, closeFileWithConfirm, combineOverlappingSegments, combineSelectedSegments, concatBatch, convertFormatBatch, copySegmentsToClipboard, createFixedDurationSegments, createNumSegments, createRandomSegments, createSegmentsFromKeyframes, currentSegIndexSafe, cutSegments.length, cutSegmentsHistory, deselectAllSegments, detectBlackScenes, detectSceneChanges, detectSilentScenes, duplicateCurrentSegment, editCurrentSegmentTags, extractAllStreams, extractCurrentSegmentFramesAsImages, extractSelectedSegmentsFramesAsImages, fillSegmentsGaps, goToTimecode, handleShowStreamsSelectorClick, increaseRotation, invertAllSegments, invertSelectedSegments, jumpCutEnd, jumpCutStart, jumpSeg, jumpTimelineEnd, jumpTimelineStart, keyboardNormalSeekSpeed, keyboardSeekAccFactor, keyboardSeekSpeed2, keyboardSeekSpeed3, onExportPress, onLabelSegment, openDirDialog, openFilesDialog, openSendReportDialogWithState, pause, play, removeCutSegment, removeSelectedSegments, reorderSegsByStartTime, seekClosestKeyframe, seekRel, seekRelPercent, selectAllSegments, selectOnlyCurrentSegment, setCurrentSegIndex, setCutEnd, setCutStart, setPlaybackVolume, shiftAllSegmentTimes, shortStep, showIncludeExternalStreamsDialog, shuffleSegments, splitCurrentSegment, focusSegmentAtCursor, timelineToggleComfortZoom, toggleCaptureFormat, toggleCurrentSegmentSelected, toggleFullscreenVideo, toggleKeyframeCut, toggleLastCommands, toggleLoopSelectedSegments, togglePlay, toggleSegmentsList, toggleSettings, toggleShowKeyframes, toggleShowThumbnails, toggleStreamsSelector, toggleStripAudio, toggleStripThumbnail, toggleWaveformMode, tryFixInvalidDuration, userHtml5ifyCurrentFile, zoomRel]);
 
   const getKeyboardAction = useCallback((action: MainKeyboardAction) => mainActions[action], [mainActions]);
 

src/renderer/src/components/KeyboardShortcuts.tsx

@@ -317,6 +317,10 @@ const KeyboardShortcuts = memo(({
         name: t('Split segment at cursor'),
         category: segmentsAndCutpointsCategory,
       },
+      focusSegmentAtCursor: {
+        name: t('Focus segment at cursor'),
+        category: segmentsAndCutpointsCategory,
+      },
       duplicateCurrentSegment: {
         name: t('Duplicate current segment'),
         category: segmentsAndCutpointsCategory,

src/renderer/src/hooks/useSegments.ts

@@ -413,6 +413,13 @@ function useSegments({ filePath, workingRef, setWorking, setCutProgress, videoSt
     if (value != null) updateSegAtIndex(index, { name: value });
   }, [cutSegments, updateSegAtIndex, maxLabelLength]);
 
+  const focusSegmentAtCursor = useCallback(() => {
+    const relevantTime = getRelevantTime();
+    const [firstSegmentAtCursorIndex] = findSegmentsAtCursor(apparentCutSegments, relevantTime);
+    if (firstSegmentAtCursorIndex == null) return;
+    setCurrentSegIndex(firstSegmentAtCursorIndex);
+  }, [apparentCutSegments, getRelevantTime]);
+
   const splitCurrentSegment = useCallback(() => {
     const relevantTime = getRelevantTime();
     const segmentsAtCursorIndexes = findSegmentsAtCursor(apparentCutSegments, relevantTime);
@@ -566,6 +573,7 @@ function useSegments({ filePath, workingRef, setWorking, setCutProgress, videoSt
     setCutEnd,
     onLabelSegment,
     splitCurrentSegment,
+    focusSegmentAtCursor,
     createNumSegments,
     createFixedDurationSegments,
     createRandomSegments,

types.ts

@@ -1,4 +1,4 @@
-export type KeyboardAction = 'addSegment' | 'togglePlayResetSpeed' | 'togglePlayNoResetSpeed' | 'reducePlaybackRate' | 'reducePlaybackRateMore' | 'increasePlaybackRate' | 'increasePlaybackRateMore' | 'timelineToggleComfortZoom' | 'seekPreviousFrame' | 'seekNextFrame' | 'captureSnapshot' | 'setCutStart' | 'setCutEnd' | 'removeCurrentSegment' | 'cleanupFilesDialog' | 'splitCurrentSegment' | 'increaseRotation' | 'goToTimecode' | 'seekBackwards' | 'seekBackwards2' | 'seekBackwards3' | 'seekBackwardsPercent' | 'seekBackwardsPercent' | 'seekBackwardsKeyframe' | 'jumpCutStart' | 'seekForwards' | 'seekForwards2' | 'seekForwards3' | 'seekForwardsPercent' | 'seekForwardsPercent' | 'seekForwardsKeyframe' | 'jumpCutEnd' | 'jumpTimelineStart' | 'jumpTimelineEnd' | 'jumpFirstSegment' | 'jumpPrevSegment' | 'timelineZoomIn' | 'timelineZoomIn' | 'batchPreviousFile' | 'jumpLastSegment' | 'jumpNextSegment' | 'timelineZoomOut' | 'timelineZoomOut' | 'batchNextFile' | 'batchOpenSelectedFile' | 'batchOpenPreviousFile' | 'batchOpenNextFile' | 'undo' | 'undo' | 'redo' | 'redo' | 'copySegmentsToClipboard' | 'copySegmentsToClipboard' | 'toggleFullscreenVideo' | 'labelCurrentSegment' | 'export' | 'toggleKeyboardShortcuts' | 'closeActiveScreen' | 'increaseVolume' | 'decreaseVolume' | 'detectBlackScenes' | 'detectSilentScenes' | 'detectSceneChanges' | 'toggleLastCommands' | 'play' | 'pause' | 'reloadFile' | 'html5ify' | 'togglePlayOnlyCurrentSegment' | 'toggleLoopOnlyCurrentSegment' | 'toggleLoopStartEndOnlyCurrentSegment' | 'toggleLoopSelectedSegments' | 'editCurrentSegmentTags' | 'duplicateCurrentSegment' | 'reorderSegsByStartTime' | 'invertAllSegments' | 'fillSegmentsGaps' | 'shiftAllSegmentTimes' | 'alignSegmentTimesToKeyframes' | 'createSegmentsFromKeyframes' | 'createFixedDurationSegments' | 'createNumSegments' | 'createRandomSegments' | 'shuffleSegments' | 'combineOverlappingSegments' | 'combineSelectedSegments' | 'clearSegments' | 'toggleSegmentsList' | 'selectOnlyCurrentSegment' | 'deselectAllSegments' | 'selectAllSegments' | 'toggleCurrentSegmentSelected' | 'invertSelectedSegments' | 'removeSelectedSegments' | 'toggleStreamsSelector' | 'extractAllStreams' | 'showStreamsSelector' | 'showIncludeExternalStreamsDialog' | 'captureSnapshotAsCoverArt' | 'extractCurrentSegmentFramesAsImages' | 'extractSelectedSegmentsFramesAsImages' | 'convertFormatBatch' | 'convertFormatCurrentFile' | 'fixInvalidDuration' | 'closeBatch' | 'concatBatch' | 'toggleKeyframeCutMode' | 'toggleCaptureFormat' | 'toggleStripAudio' | 'toggleStripThumbnail' | 'setStartTimeOffset' | 'toggleWaveformMode' | 'toggleShowThumbnails' | 'toggleShowKeyframes' | 'toggleSettings' | 'openSendReportDialog' | 'openFilesDialog' | 'openDirDialog' | 'exportYouTube' | 'closeCurrentFile' | 'quit';
+export type KeyboardAction = 'addSegment' | 'togglePlayResetSpeed' | 'togglePlayNoResetSpeed' | 'reducePlaybackRate' | 'reducePlaybackRateMore' | 'increasePlaybackRate' | 'increasePlaybackRateMore' | 'timelineToggleComfortZoom' | 'seekPreviousFrame' | 'seekNextFrame' | 'captureSnapshot' | 'setCutStart' | 'setCutEnd' | 'removeCurrentSegment' | 'cleanupFilesDialog' | 'splitCurrentSegment' | 'focusSegmentAtCursor' | 'increaseRotation' | 'goToTimecode' | 'seekBackwards' | 'seekBackwards2' | 'seekBackwards3' | 'seekBackwardsPercent' | 'seekBackwardsPercent' | 'seekBackwardsKeyframe' | 'jumpCutStart' | 'seekForwards' | 'seekForwards2' | 'seekForwards3' | 'seekForwardsPercent' | 'seekForwardsPercent' | 'seekForwardsKeyframe' | 'jumpCutEnd' | 'jumpTimelineStart' | 'jumpTimelineEnd' | 'jumpFirstSegment' | 'jumpPrevSegment' | 'timelineZoomIn' | 'timelineZoomIn' | 'batchPreviousFile' | 'jumpLastSegment' | 'jumpNextSegment' | 'timelineZoomOut' | 'timelineZoomOut' | 'batchNextFile' | 'batchOpenSelectedFile' | 'batchOpenPreviousFile' | 'batchOpenNextFile' | 'undo' | 'undo' | 'redo' | 'redo' | 'copySegmentsToClipboard' | 'copySegmentsToClipboard' | 'toggleFullscreenVideo' | 'labelCurrentSegment' | 'export' | 'toggleKeyboardShortcuts' | 'closeActiveScreen' | 'increaseVolume' | 'decreaseVolume' | 'detectBlackScenes' | 'detectSilentScenes' | 'detectSceneChanges' | 'toggleLastCommands' | 'play' | 'pause' | 'reloadFile' | 'html5ify' | 'togglePlayOnlyCurrentSegment' | 'toggleLoopOnlyCurrentSegment' | 'toggleLoopStartEndOnlyCurrentSegment' | 'toggleLoopSelectedSegments' | 'editCurrentSegmentTags' | 'duplicateCurrentSegment' | 'reorderSegsByStartTime' | 'invertAllSegments' | 'fillSegmentsGaps' | 'shiftAllSegmentTimes' | 'alignSegmentTimesToKeyframes' | 'createSegmentsFromKeyframes' | 'createFixedDurationSegments' | 'createNumSegments' | 'createRandomSegments' | 'shuffleSegments' | 'combineOverlappingSegments' | 'combineSelectedSegments' | 'clearSegments' | 'toggleSegmentsList' | 'selectOnlyCurrentSegment' | 'deselectAllSegments' | 'selectAllSegments' | 'toggleCurrentSegmentSelected' | 'invertSelectedSegments' | 'removeSelectedSegments' | 'toggleStreamsSelector' | 'extractAllStreams' | 'showStreamsSelector' | 'showIncludeExternalStreamsDialog' | 'captureSnapshotAsCoverArt' | 'extractCurrentSegmentFramesAsImages' | 'extractSelectedSegmentsFramesAsImages' | 'convertFormatBatch' | 'convertFormatCurrentFile' | 'fixInvalidDuration' | 'closeBatch' | 'concatBatch' | 'toggleKeyframeCutMode' | 'toggleCaptureFormat' | 'toggleStripAudio' | 'toggleStripThumbnail' | 'setStartTimeOffset' | 'toggleWaveformMode' | 'toggleShowThumbnails' | 'toggleShowKeyframes' | 'toggleSettings' | 'openSendReportDialog' | 'openFilesDialog' | 'openDirDialog' | 'exportYouTube' | 'closeCurrentFile' | 'quit';
 
 export interface KeyBinding {
   keys: string,