bump version

feat(teleprompter): add teleprompter view
2026-08-22 07:29:08 +00:00 · 2026-08-21 20:52:55 +02:00 · 2026-08-21 20:52:55 +02:00
51 changed files with 2457 additions and 424 deletions
@@ -1,6 +1,6 @@
 {
  "name": "@getontime/cli",
-  "version": "4.12.0",
+  "version": "4.13.0-beta.1",
  "author": "Carlos Valente",
  "description": "Time keeping for live events",
  "repository": "https://github.com/cpvalente/ontime",
@@ -1,6 +1,6 @@
 {
  "name": "ontime-ui",
-  "version": "4.12.0",
+  "version": "4.13.0-beta.1",
  "private": true,
  "type": "module",
  "dependencies": {
@@ -20,6 +20,7 @@ const Backstage = lazy(() => import('./views/backstage/Backstage'));
 const StudioClock = lazy(() => import('./views/studio/Studio'));
 const Timeline = lazy(() => import('./views/timeline/TimelinePage'));
 const ProjectInfo = lazy(() => import('./views/project-info/ProjectInfo'));
+const Teleprompter = lazy(() => import('./views/teleprompter/Teleprompter'));

 const Editor = lazy(() => import('./views/editor/ProtectedEditor'));
 const Cuesheet = lazy(() => import('./views/cuesheet/ProtectedCuesheet'));
@@ -95,6 +96,15 @@ export default function AppRouter() {
            </ViewLoader>
          }
        />
+        <Route
+          path='teleprompter'
+          element={
+            <ViewLoader>
+              <ViewNavigationMenu isNavigationLocked={getIsNavigationLocked()} suppressSpaceHotkey />
+              <Teleprompter />
+            </ViewLoader>
+          }
+        />
        {/*/!* Protected Routes *!/*/}
        <Route path='editor' element={<Editor />} />
        <Route path='cuesheet' element={<Cuesheet />} />
@@ -165,6 +175,7 @@ const PresetViewMap: Record<OntimeViewPresettable, ComponentType> = {
  [OntimeView.StudioClock]: StudioClock,
  [OntimeView.Countdown]: Countdown,
  [OntimeView.ProjectInfo]: ProjectInfo,
+  [OntimeView.Teleprompter]: Teleprompter,
 };

 /**
@@ -214,8 +225,14 @@ function PresetView() {
  const Component = PresetViewMap[preset.target as OntimeViewPresettable];
  return (
    <PresetContext value={preset}>
-      <ViewNavigationMenu isNavigationLocked={getIsNavigationLocked()} suppressSettings />
-      {Component ? <Component /> : <NotFound />}
+      <ViewLoader>
+        <ViewNavigationMenu
+          isNavigationLocked={getIsNavigationLocked()}
+          suppressSettings
+          suppressSpaceHotkey={preset.target === OntimeView.Teleprompter}
+        />
+        {Component ? <Component /> : <NotFound />}
+      </ViewLoader>
    </PresetContext>
  );
 }
@@ -0,0 +1,66 @@
+.groups {
+  display: grid;
+  gap: 0.875rem;
+}
+
+.group {
+  h3 {
+    margin: 0 0 0.375rem;
+    color: var(--shortcut-title-color, currentColor);
+    font-size: calc(1rem - 3px);
+    font-weight: 600;
+    text-transform: uppercase;
+  }
+}
+
+.list {
+  display: grid;
+  gap: 0.25rem;
+}
+
+.row {
+  min-height: 1.625rem;
+  display: grid;
+  grid-template-columns: minmax(10rem, 1fr) minmax(0, auto);
+  align-items: center;
+  gap: 0.75rem;
+  font-size: calc(1rem - 3px);
+}
+
+.label {
+  min-width: 0;
+  line-height: 1.2;
+  color: var(--shortcut-label-color, currentColor);
+}
+
+.keys {
+  display: inline-flex;
+  align-items: center;
+  flex-wrap: wrap;
+  justify-content: flex-end;
+  gap: 0.25rem 0.5rem;
+  min-width: 0;
+}
+
+.combo {
+  display: inline-flex;
+  align-items: center;
+  flex-wrap: nowrap;
+  gap: 0.25rem 0;
+}
+
+.separator {
+  color: var(--shortcut-separator-color, currentColor);
+  font-size: calc(1rem - 5px);
+}
+
+@media (max-width: 680px) {
+  .row {
+    grid-template-columns: 1fr;
+    gap: 0.25rem;
+  }
+
+  .keys {
+    justify-content: flex-start;
+  }
+}
@@ -0,0 +1,42 @@
+import type { PropsWithChildren } from 'react';
+
+import { cx } from '../../utils/styleUtils';
+import Kbd from '../kbd/Kbd';
+
+import style from './KeyboardShortcuts.module.scss';
+
+export function ShortcutGroups({ className, children }: PropsWithChildren<{ className?: string }>) {
+  return <div className={cx([style.groups, className])}>{children}</div>;
+}
+
+export function ShortcutGroup({ title, children }: PropsWithChildren<{ title: string }>) {
+  return (
+    <section className={style.group}>
+      <h3>{title}</h3>
+      <div className={style.list}>{children}</div>
+    </section>
+  );
+}
+
+export function Shortcut({ label, children }: PropsWithChildren<{ label: string }>) {
+  return (
+    <div className={style.row}>
+      <span className={style.label}>{label}</span>
+      <span className={style.keys}>{children}</span>
+    </div>
+  );
+}
+
+export function Combo({ keys }: { keys: string[] }) {
+  return (
+    <span className={style.combo}>
+      {keys.map((key) => (
+        <Kbd key={key}>{key}</Kbd>
+      ))}
+    </span>
+  );
+}
+
+export function Separator() {
+  return <span className={style.separator}>/</span>;
+}
@@ -1,4 +1,4 @@
-import { useDisclosure, useHotkeys } from '@mantine/hooks';
+import { type HotkeyItem, useDisclosure, useHotkeys } from '@mantine/hooks';
 import { memo } from 'react';
 import { useSearchParams } from 'react-router';

@@ -13,24 +13,32 @@ interface ViewNavigationMenuProps {
  isNavigationLocked?: boolean;
  /** prevent showing settings */
  suppressSettings?: boolean;
+  suppressSpaceHotkey?: boolean;
 }

 export default memo(ViewNavigationMenu);
-function ViewNavigationMenu({ isNavigationLocked, suppressSettings }: ViewNavigationMenuProps) {
+function ViewNavigationMenu({ isNavigationLocked, suppressSettings, suppressSpaceHotkey }: ViewNavigationMenuProps) {
  const [isMenuOpen, menuHandler] = useDisclosure();
  const { open: showEditFormDrawer } = useViewParamsEditorStore();
  const [searchParams] = useSearchParams();
  const hasSavedChanges = hasCustomParams(searchParams);

+  // Omitting the binding also avoids useHotkeys preventing the default action.
+  const spaceHotkey: HotkeyItem[] = suppressSpaceHotkey
+    ? []
+    : [
+        [
+          'Space',
+          () => {
+            if (isNavigationLocked) return;
+            menuHandler.toggle();
+          },
+          { preventDefault: true },
+        ],
+      ];
+
  useHotkeys([
-    [
-      'Space',
-      () => {
-        if (isNavigationLocked) return;
-        menuHandler.toggle();
-      },
-      { preventDefault: true },
-    ],
+    ...spaceHotkey,
    [
      'mod + ,',
      () => {
@@ -49,7 +49,13 @@ export default function ParamInput({ paramField }: ParamInputProps) {
  }

  if (type === 'boolean') {
-    return <ControlledSwitch id={id} initialValue={isStringBoolean(searchParams.get(id)) ?? defaultValue} />;
+    const paramValue = searchParams.get(id);
+    return (
+      <ControlledSwitch
+        id={id}
+        initialValue={paramValue === null ? Boolean(defaultValue) : isStringBoolean(paramValue)}
+      />
+    );
  }

  if (type === 'number') {
@@ -228,11 +228,41 @@ describe('getURLSearchParamsFromObj()', () => {
      },
    ];
    const params = {
-      bool1: 'off',
      bool2: 'on',
    };
    const result = getURLSearchParamsFromObj(params, mockOptionsWithBooleans);
    expect(result.get('bool1')).toBe('false');
    expect(result.get('bool2')).toBe('true');
  });
+
+  it('omits booleans which match their default', () => {
+    const mockOptionsWithBooleans: ViewOption[] = [
+      {
+        title: OptionTitle.StyleOverride,
+        options: [
+          {
+            id: 'onByDefault',
+            title: 'onByDefault',
+            description: 'On by default',
+            type: 'boolean',
+            defaultValue: true,
+          },
+          {
+            id: 'offByDefault',
+            title: 'offByDefault',
+            description: 'Off by default',
+            type: 'boolean',
+            defaultValue: false,
+          },
+        ],
+      },
+    ];
+
+    const untouched = getURLSearchParamsFromObj({ onByDefault: 'on' }, mockOptionsWithBooleans);
+    expect(untouched.toString()).toBe('');
+
+    const flipped = getURLSearchParamsFromObj({ offByDefault: 'on' }, mockOptionsWithBooleans);
+    expect(flipped.get('onByDefault')).toBe('false');
+    expect(flipped.get('offByDefault')).toBe('true');
+  });
 });
@@ -155,6 +155,14 @@ export function getURLSearchParamsFromObj(paramsObj: ViewParamsObj, paramFields:
    });
  });

+  // Unchecked checkboxes are absent from FormData. Persist false when true is the default.
+  metadata.booleanFields.forEach((id) => {
+    if (id in paramsObj) return;
+    if (metadata.defaultValues[id] !== 'false') {
+      addUniqueParam(id, 'false');
+    }
+  });
+
  // Then process user-provided values
  Object.entries(paramsObj).forEach(([id, value]) => {
    if (typeof value === 'string' && value.length) {
@@ -22,11 +22,6 @@ interface UseFollowComponentProps {
  scrollRef: RefObject<HTMLElement | null>;
  doFollow: boolean;
  topOffset?: number;
-  /**
-   * Resolved at scroll time, for offsets which can only be measured from the DOM (eg. a sticky header).
-   * Takes precedence over topOffset. Keep the reference stable, it is a dependency of the follow effect.
-   */
-  getTopOffset?: () => number;
  setScrollFlag?: (newValue: boolean) => void;
  followTrigger?: MaybeString; // this would be an entry id or null
 }
@@ -36,7 +31,6 @@ export default function useFollowComponent({
  scrollRef,
  doFollow,
  topOffset = 100,
-  getTopOffset,
  setScrollFlag,
  followTrigger,
 }: UseFollowComponentProps) {
@@ -50,23 +44,21 @@ export default function useFollowComponent({
      setScrollFlag?.(true);
      // Use requestAnimationFrame to ensure the component is fully loaded
      window.requestAnimationFrame(() => {
-        // resolve the offset after layout, so that measured values are up to date
-        const offset = getTopOffset?.() ?? topOffset;
-        scrollToComponent(followRef as RefObject<HTMLElement>, scrollRef as RefObject<HTMLElement>, offset);
+        scrollToComponent(followRef as RefObject<HTMLElement>, scrollRef as RefObject<HTMLElement>, topOffset);
        setScrollFlag?.(false);
      });
    }
-  }, [followTrigger, doFollow, followRef, scrollRef, setScrollFlag, topOffset, getTopOffset]);
+  }, [followTrigger, doFollow, followRef, scrollRef, setScrollFlag, topOffset]);

  const scrollToRefComponent = useCallback(
-    (componentRef = followRef, containerRef = scrollRef, offset?: number) => {
+    (componentRef = followRef, containerRef = scrollRef, offset = topOffset) => {
      if (componentRef && containerRef) {
        // @ts-expect-error -- we know this are not null
        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-        scrollToComponent(componentRef!, containerRef!, offset ?? getTopOffset?.() ?? topOffset);
+        scrollToComponent(componentRef!, containerRef!, offset);
      }
    },
-    [followRef, scrollRef, topOffset, getTopOffset],
+    [followRef, scrollRef, topOffset],
  );

  return scrollToRefComponent;
@@ -26,6 +26,7 @@ const targetOptions: SelectOption<OntimeViewPresettable>[] = [
  { value: OntimeView.StudioClock, label: 'Studio Clock' },
  { value: OntimeView.Countdown, label: 'Countdown' },
  { value: OntimeView.ProjectInfo, label: 'Project Info' },
+  { value: OntimeView.Teleprompter, label: 'Teleprompter' },
 ];

 const formId = 'url-preset-form';
@@ -18,14 +18,6 @@
  padding-bottom: 95vh;
 }

-/* a group and its events, bounds the sticky group header to its own section.
-   repeats the gap of the surrounding list, which no longer reaches the rows of a section */
-.groupSection {
-  display: flex;
-  flex-direction: column;
-  gap: 2px;
-}
-
 .editPrompt {
  position: fixed;
  z-index: $zindex-dialog;
@@ -1,5 +1,5 @@
 import { OntimeView, isOntimeEvent, isOntimeGroup } from 'ontime-types';
-import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import { Fragment, useCallback, useEffect, useMemo, useRef, useState } from 'react';

 import EmptyFill from '../../common/components/state/EmptyFill';
 import EmptyPage from '../../common/components/state/EmptyPage';
@@ -54,21 +54,11 @@ function Operator({ rundown, rundownMetadata, customFields, settings }: Operator
  const [lockAutoScroll, setLockAutoScroll] = useState(false);
  const selectedRef = useRef<HTMLDivElement | null>(null);
  const scrollRef = useRef<HTMLDivElement | null>(null);
-  const stickyHeaderRef = useRef<HTMLDivElement | null>(null);
-
-  // the group of the running event is pinned to the top of the list, the running event needs to clear it
-  const getStickyOffset = useCallback(() => {
-    const header = stickyHeaderRef.current;
-    // account for the list gap, so that the rows do not touch
-    return header ? header.offsetHeight + 2 : 0;
-  }, []);
-  const getTopOffset = useCallback(() => selectedOffset + getStickyOffset(), [getStickyOffset]);
-
  const scrollToComponent = useFollowComponent({
    followRef: selectedRef,
    scrollRef,
    doFollow: !lockAutoScroll,
-    getTopOffset,
+    topOffset: selectedOffset,
    followTrigger: selectedEventId,
  });

@@ -96,8 +86,7 @@ function Operator({ rundown, rundownMetadata, customFields, settings }: Operator
      const selectedRect = selectedRef.current.getBoundingClientRect();
      const scrollerRect = scrollRef.current.getBoundingClientRect();
      if (selectedRect && scrollerRect) {
-        // discount the pinned group header, so that the threshold keeps its meaning when a header is stuck
-        const distanceFromTop = selectedRect.top - scrollerRect.top - getStickyOffset();
+        const distanceFromTop = selectedRect.top - scrollerRect.top;
        const hasScrolledOutOfThreshold = distanceFromTop < -8 || distanceFromTop > selectedOffset;
        setLockAutoScroll(hasScrolledOutOfThreshold);
      }
@@ -197,14 +186,13 @@ function Operator({ rundown, rundownMetadata, customFields, settings }: Operator
              }

              return (
-                <div className={style.groupSection} key={entry.id}>
+                <Fragment key={entry.id}>
                  <OperatorGroup
-                    ref={isCurrentParent ? stickyHeaderRef : undefined}
+                    key={entry.id}
                    title={entry.title}
                    colour={entry.colour}
                    count={entry.entries.length}
                    duration={entry.duration}
-                    isLive={isCurrentParent}
                  />
                  {entry.entries.map((nestedEntryId) => {
                    const nestedEntry = rundown.entries[nestedEntryId];
@@ -251,7 +239,7 @@ function Operator({ rundown, rundownMetadata, customFields, settings }: Operator
                      />
                    );
                  })}
-                </div>
+                </Fragment>
              );
            }
            return null;
@@ -3,32 +3,17 @@
  min-height: 2.5rem;
  padding: 0.4rem 0.75rem;
  border-left: 0.35rem solid var(--group-colour, $gray-500);
-  /* the background comes inline from getAccessibleColour, which resolves to an opaque colour
-     and is what keeps the rows from showing through while the header is pinned */
+  background-color: $gray-1350;
+  background: color-mix(in srgb, transparent 88%, var(--group-colour, $gray-500) 12%);
  font-size: 1.25rem;
  font-weight: 600;

-  /* stays visible as a header for the events of the group, bound by the group section */
-  position: sticky;
-  /* covers the list padding, otherwise the rows scroll through it */
-  top: -0.25rem;
-  z-index: 1;
-
  display: flex;
  align-items: center;
  gap: 1rem;
  letter-spacing: 0;
 }

-/* a group holding the running event is only outlined, the green fill belongs to the event row itself.
-   the card is already filled with the group colour, so we use the lighter active indicator over a dark
-   frame, which stays legible against any of them, green groups included */
-.live {
-  box-shadow:
-    inset 0 0 0 2px $ui-black,
-    inset 0 0 0 4px $active-indicator;
-}
-
 .title {
  flex: 1 1 auto;
  min-width: 0;
@@ -1,6 +1,6 @@
-import { CSSProperties, Ref, memo } from 'react';
+import { CSSProperties, memo } from 'react';

-import { cx, getAccessibleColour } from '../../../common/utils/styleUtils';
+import { getAccessibleColour } from '../../../common/utils/styleUtils';
 import { formatDuration } from '../../../common/utils/time';

 import style from './OperatorGroup.module.scss';
@@ -10,22 +10,15 @@ interface OperatorGroup {
  colour: string;
  count: number;
  duration: number;
-  /** whether the group contains the currently running event */
-  isLive?: boolean;
-  ref?: Ref<HTMLDivElement>;
 }

 export default memo(OperatorGroup);
-function OperatorGroup({ title, colour, count, duration, isLive, ref }: OperatorGroup) {
+function OperatorGroup({ title, colour, count, duration }: OperatorGroup) {
  const groupColour = colour || '#929292';
  const groupColours = getAccessibleColour(groupColour);

  return (
-    <div
-      className={cx([style.group, isLive && style.live])}
-      style={{ ...groupColours, '--group-colour': groupColour } as CSSProperties}
-      ref={ref}
-    >
+    <div className={style.group} style={{ ...groupColours, '--group-colour': groupColour } as CSSProperties}>
      <span className={style.title}>{title}</span>
      <span className={style.meta}>
        <span>{`${count} ${count === 1 ? 'event' : 'events'}`}</span>
@@ -17,59 +17,10 @@
 }

 .shortcuts {
-  display: grid;
-  gap: 0.875rem;
  margin-top: 0.875rem;
-}

-.shortcutGroup {
-  h3 {
-    margin: 0 0 0.375rem;
-    color: $ui-white;
-    font-size: calc(1rem - 3px);
-    font-weight: 600;
-    text-transform: uppercase;
-  }
-}
-
-.shortcutList {
-  display: grid;
-  gap: 0.25rem;
-}
-
-.shortcutRow {
-  min-height: 1.625rem;
-  display: grid;
-  grid-template-columns: minmax(10rem, 1fr) minmax(0, auto);
-  align-items: center;
-  gap: 0.75rem;
-  font-size: calc(1rem - 3px);
-}
-
-.shortcutLabel {
-  min-width: 0;
-  line-height: 1.2;
-}
-
-.shortcutKeys {
-  display: inline-flex;
-  align-items: center;
-  flex-wrap: wrap;
-  justify-content: flex-end;
-  gap: 0.25rem 0.5rem;
-  min-width: 0;
-}
-
-.keyCombo {
-  display: inline-flex;
-  align-items: center;
-  flex-wrap: nowrap;
-  gap: 0.25rem 0;
-}
-
-.separator {
-  color: $gray-500;
-  font-size: calc(1rem - 5px);
+  --shortcut-title-color: #{$ui-white};
+  --shortcut-separator-color: #{$gray-500};
 }

 .prompt {
@@ -84,13 +35,4 @@
  .shortcutSection {
    margin-top: 1rem;
  }
-
-  .shortcutRow {
-    grid-template-columns: 1fr;
-    gap: 0.25rem;
-  }
-
-  .shortcutKeys {
-    justify-content: flex-start;
-  }
 }
@@ -1,7 +1,13 @@
-import { PropsWithChildren, memo } from 'react';
+import { memo } from 'react';

 import * as Editor from '../../../common/components/editor-utils/EditorUtils';
-import Kbd from '../../../common/components/kbd/Kbd';
+import {
+  Combo,
+  Separator,
+  Shortcut,
+  ShortcutGroup,
+  ShortcutGroups,
+} from '../../../common/components/keyboard-shortcuts/KeyboardShortcuts';
 import { deviceAlt, deviceMod } from '../../../common/utils/deviceUtils';

 import style from './EventEditorEmpty.module.scss';
@@ -13,7 +19,7 @@ function EventEditorEmpty() {
    <div className={style.entryEditor} data-testid='editor-container'>
      <div className={style.shortcutSection}>
        <Editor.Title className={style.prompt}>Rundown shortcuts</Editor.Title>
-        <div className={style.shortcuts}>
+        <ShortcutGroups className={style.shortcuts}>
          <ShortcutGroup title='Search'>
            <Shortcut label='Find in rundown'>
              <Combo keys={[deviceMod, 'F']} />
@@ -100,40 +106,8 @@ function EventEditorEmpty() {
              <Combo keys={[deviceAlt, 'Shift', 'D']} />
            </Shortcut>
          </ShortcutGroup>
-        </div>
+        </ShortcutGroups>
      </div>
    </div>
  );
 }
-
-function ShortcutGroup({ title, children }: PropsWithChildren<{ title: string }>) {
-  return (
-    <section className={style.shortcutGroup}>
-      <h3>{title}</h3>
-      <div className={style.shortcutList}>{children}</div>
-    </section>
-  );
-}
-
-function Shortcut({ label, children }: PropsWithChildren<{ label: string }>) {
-  return (
-    <div className={style.shortcutRow}>
-      <span className={style.shortcutLabel}>{label}</span>
-      <span className={style.shortcutKeys}>{children}</span>
-    </div>
-  );
-}
-
-function Combo({ keys }: { keys: string[] }) {
-  return (
-    <span className={style.keyCombo}>
-      {keys.map((key) => (
-        <Kbd key={key}>{key}</Kbd>
-      ))}
-    </span>
-  );
-}
-
-function Separator() {
-  return <span className={style.separator}>/</span>;
-}
@@ -35,6 +35,7 @@ export default function GenerateLinkFormExport({ lockedPath }: GenerateLinkFormE
      { value: OntimeView.Timer, label: 'Timer' },
      { value: OntimeView.Cuesheet, label: 'Cuesheet' },
      { value: OntimeView.Operator, label: 'Operator' },
+      { value: OntimeView.Teleprompter, label: 'Teleprompter' },
      { value: '<<companion>>', label: 'Companion' },
      ...urlPresetData.map((preset) => ({
        value: `preset-${preset.alias}`,
@@ -4,6 +4,7 @@ export const navigatorConstants = [
  { url: 'timeline', label: 'Timeline' },
  { url: 'studio', label: 'Studio Clock' },
  { url: 'countdown', label: 'Countdown' },
+  { url: 'teleprompter', label: 'Teleprompter' },
  { url: 'info', label: 'Project Info' },
 ];

@@ -103,22 +103,6 @@ $item-height: 3.5rem;
    padding-bottom: max(8rem, calc(5rem + env(safe-area-inset-bottom)));
  }

-  /* a subscribed group and its subscribed events, bounds the sticky header to its own section.
-     flex rather than block so that the row margins do not collapse, keeping the spacing between
-     rows of a section equal to the spacing between sections */
-  .sub-section {
-    display: flex;
-    flex-direction: column;
-  }
-
-  /* scoped to the section, the select view shows the same cards in a flat list */
-  .sub-section .sub--group {
-    position: sticky;
-    /* sticky insets constrain the margin box, negate the row margin so the header sits flush */
-    top: -2px;
-    z-index: 1;
-  }
-
  /* ====================== LIST-ITEM ======================*/
  .sub {
    margin: 2px;
@@ -212,15 +196,9 @@ $item-height: 3.5rem;

  .sub--group {
    box-shadow: inset 0 0 0 1px var(--user-color, $gray-1325);
-    /* the card colour is translucent, an opaque base keeps the rows from showing through the sticky header.
-       split into longhands since the shorthand only takes a colour in its last layer */
-    background-color: var(--background-color-override, $viewer-background-color);
-    background-image:
+    background:
      linear-gradient(90deg, color-mix(in srgb, var(--user-color, transparent) 18%, transparent), transparent 42%),
-      linear-gradient(
-        var(--card-background-color-override, $viewer-card-bg-color),
-        var(--card-background-color-override, $viewer-card-bg-color)
-      );
+      var(--card-background-color-override, $viewer-card-bg-color);

    .sub__binder {
      background: var(--user-color, var(--card-background-color-override, $viewer-card-bg-color));
@@ -252,16 +230,6 @@ $item-height: 3.5rem;
    }
  }

-  /* a group holding the running event is only outlined, the green fill belongs to the event row itself */
-  .sub--group.sub--live {
-    box-shadow: inset 0 0 0 2px $active-green;
-  }
-
-  /* loaded but not yet running, subtle enough to not compete with the live ring */
-  .sub--group.sub--armed {
-    box-shadow: inset 0 0 0 2px $gray-1000;
-  }
-
  .sub__title {
    grid-area: title;
    padding-bottom: 0.5rem;
@@ -1,6 +1,6 @@
 import { MaybeNumber, OntimeEvent } from 'ontime-types';
 import { dayInMs } from 'ontime-utils';
-import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import { useEffect, useRef, useState } from 'react';
 import { IoPencil } from 'react-icons/io5';

 import Button from '../../common/components/buttons/Button';
@@ -22,7 +22,6 @@ import {
  CountdownTarget,
  extendEventData,
  getIsLive,
-  groupSubscriptionTargets,
  isOutsideRange,
  preferredFormat12,
  preferredFormat24,
@@ -49,25 +48,11 @@ export default function CountdownSubscriptions({ subscribedEvents, goToEditMode
  const [lockAutoScroll, setLockAutoScroll] = useState(false);
  const selectedRef = useRef<HTMLDivElement | null>(null);
  const scrollRef = useRef<HTMLDivElement | null>(null);
-  const stickyHeaderRef = useRef<HTMLDivElement | null>(null);
-
-  const sections = useMemo(() => groupSubscriptionTargets(subscribedEvents), [subscribedEvents]);
-
-  // The group of the running event is pinned to the top of the list, the running event needs to clear it.
-  // This is measured rather than estimated: the card scales with the viewport (the font sizes are clamped
-  // against vw), it grows while live since the running event's title is added, and long titles wrap.
-  // Measured between 91px and 171px, so a constant would leave the running event behind the header.
-  const getStickyOffset = useCallback(() => {
-    const header = stickyHeaderRef.current;
-    // account for the row margin, so that the rows do not touch
-    return header ? header.offsetHeight + 2 : 0;
-  }, []);
-
  const scrollToComponent = useFollowComponent({
    followRef: selectedRef,
    scrollRef,
    doFollow: !lockAutoScroll,
-    getTopOffset: getStickyOffset,
+    topOffset: 0,
    followTrigger: selectedEventId,
  });

@@ -94,8 +79,7 @@ export default function CountdownSubscriptions({ subscribedEvents, goToEditMode
      const selectedRect = selectedRef.current.getBoundingClientRect();
      const scrollerRect = scrollRef.current.getBoundingClientRect();
      if (selectedRect && scrollerRect) {
-        // discount the pinned group header, so that the threshold keeps its meaning when a header is stuck
-        const distanceFromTop = selectedRect.top - scrollerRect.top - getStickyOffset();
+        const distanceFromTop = selectedRect.top - scrollerRect.top;
        const hasScrolledOutOfThreshold = distanceFromTop < -8 || distanceFromTop > 50;
        setLockAutoScroll(hasScrolledOutOfThreshold);
      }
@@ -114,63 +98,41 @@ export default function CountdownSubscriptions({ subscribedEvents, goToEditMode

  return (
    <div className='list-container' onWheel={handleScroll} onTouchMove={handleScroll} ref={scrollRef}>
-      {sections.map((section) => {
-        const rows = section.group ? [section.group, ...section.events] : section.events;
-        // the running event anchors the scroll, the group header stays pinned above it
-        const anchorId = section.events.find((event) => getIsLive(event.id, selectedEventId, playback))?.id ?? null;
-
+      {subscribedEvents.map((event) => {
+        // while a group is live, surface the running event's title as the secondary line
+        const liveTitle = event.isGroup && event.liveEntry ? event.liveEntry.title : undefined;
+        const secondaryData = liveTitle ?? getPropertyValue(event, secondarySource);
+        const isGroupedEvent = !event.isGroup && Boolean(event.parent);
+        const activeEntryId = event.isGroup ? (event.liveEntry?.id ?? event.targetId) : event.id;
+        // a subscribed group is live when any of its children is the selected/running event
+        const isLive = activeEntryId ? getIsLive(activeEntryId, selectedEventId, playback) : false;
+        const isArmed = !isLive && activeEntryId === selectedEventId;
+        const countdownEvent = extendEventData(event, currentDay, actualStart, plannedStart, offset, mode, reportData);
+        const displayTitle = getPropertyValue(event, mainSource ?? 'title');
        return (
-          <div key={section.group?.id ?? rows[0].id} className='sub-section'>
-            {rows.map((event) => {
-              // while a group is live, surface the running event's title as the secondary line
-              const liveTitle = event.isGroup && event.liveEntry ? event.liveEntry.title : undefined;
-              const secondaryData = liveTitle ?? getPropertyValue(event, secondarySource);
-              const isGroupedEvent = !event.isGroup && Boolean(event.parent);
-              const activeEntryId = event.isGroup ? (event.liveEntry?.id ?? event.targetId) : event.id;
-              // a subscribed group is live when any of its children is the selected/running event
-              const isLive = activeEntryId ? getIsLive(activeEntryId, selectedEventId, playback) : false;
-              const isArmed = !isLive && activeEntryId === selectedEventId;
-              // only ever hand the ref to a single row, sharing it would null it out on the next commit
-              const isAnchor = isLive && (anchorId === null || event.id === anchorId);
-              const rowRef = isAnchor ? selectedRef : event.isGroup && anchorId ? stickyHeaderRef : undefined;
-              const countdownEvent = extendEventData(
-                event,
-                currentDay,
-                actualStart,
-                plannedStart,
-                offset,
-                mode,
-                reportData,
-              );
-              const displayTitle = getPropertyValue(event, mainSource ?? 'title');
-
-              return (
-                <div
-                  key={event.id}
-                  ref={rowRef}
-                  className={cx([
-                    'sub',
-                    isLive && 'sub--live',
-                    isArmed && 'sub--armed',
-                    event.isGroup && 'sub--group',
-                    isGroupedEvent && 'sub--in-group',
-                  ])}
-                  data-testid={event.cue}
-                >
-                  <div
-                    className='sub__binder'
-                    style={{ '--user-color': event.colour, '--group-color': event.groupColour ?? 'transparent' }}
-                  />
-                  <ScheduleTime event={countdownEvent} showExpected={showExpected} />
-                  <SubscriptionStatus event={countdownEvent} />
-                  <div className={cx(['sub__title', !displayTitle && 'subdued'])}>
-                    {event.isGroup && <span className='sub__eyebrow'>Group</span>}
-                    {displayTitle}
-                  </div>
-                  {secondaryData && <div className='sub__secondary'>{secondaryData}</div>}
-                </div>
-              );
-            })}
+          <div
+            key={event.id}
+            ref={isLive ? selectedRef : undefined}
+            className={cx([
+              'sub',
+              isLive && 'sub--live',
+              isArmed && 'sub--armed',
+              event.isGroup && 'sub--group',
+              isGroupedEvent && 'sub--in-group',
+            ])}
+            data-testid={event.cue}
+          >
+            <div
+              className='sub__binder'
+              style={{ '--user-color': event.colour, '--group-color': event.groupColour ?? 'transparent' }}
+            />
+            <ScheduleTime event={countdownEvent} showExpected={showExpected} />
+            <SubscriptionStatus event={countdownEvent} />
+            <div className={cx(['sub__title', !displayTitle && 'subdued'])}>
+              {event.isGroup && <span className='sub__eyebrow'>Group</span>}
+              {displayTitle}
+            </div>
+            {secondaryData && <div className='sub__secondary'>{secondaryData}</div>}
          </div>
        );
      })}
@@ -1,7 +1,7 @@
 import { OntimeEntry, OntimeEvent, OntimeGroup, SupportedEntry } from 'ontime-types';

 import { ExtendedEntry } from '../../common/utils/rundownMetadata';
-import { CountdownTarget, groupSubscriptionTargets, resolveSubscriptionTarget } from './countdown.utils';
+import { resolveSubscriptionTarget } from './countdown.utils';

 /**
 * Minimal builders for the extended (metadata enriched) entries the countdown view consumes.
@@ -126,89 +126,3 @@ describe('resolveSubscriptionTarget()', () => {
    expect(result?.liveEntry).toBeNull();
  });
 });
-
-describe('groupSubscriptionTargets()', () => {
-  /**
-   * Resolves a group the same way the view does, so that the tests exercise the real target shape
-   * (a resolved group carries type Event, so the helper cannot rely on the entry type)
-   */
-  function resolveGroup(group: ExtendedEntry<OntimeGroup>, flat: ExtendedEntry<OntimeEntry>[]): CountdownTarget {
-    const resolved = resolveSubscriptionTarget(group, flat);
-    if (resolved === null) {
-      throw new Error('test setup: group has no playable children');
-    }
-    return resolved;
-  }
-
-  it('returns no sections for an empty subscription list', () => {
-    expect(groupSubscriptionTargets([])).toEqual([]);
-  });
-
-  it('gives each ungrouped event its own section', () => {
-    const e1 = makeEvent({ id: 'e1' });
-    const e2 = makeEvent({ id: 'e2' });
-
-    expect(groupSubscriptionTargets([e1, e2])).toEqual([
-      { group: null, events: [e1] },
-      { group: null, events: [e2] },
-    ]);
-  });
-
-  it('absorbs the children of a subscribed group into its section', () => {
-    const group = makeGroup({ id: 'g1' });
-    const c1 = makeEvent({ id: 'c1', parent: 'g1' });
-    const c2 = makeEvent({ id: 'c2', parent: 'g1' });
-    const resolved = resolveGroup(group, [group, c1, c2]);
-
-    expect(groupSubscriptionTargets([resolved, c1, c2])).toEqual([{ group: resolved, events: [c1, c2] }]);
-  });
-
-  it('keeps a subscribed group with no subscribed children as an empty section', () => {
-    const group = makeGroup({ id: 'g1' });
-    const c1 = makeEvent({ id: 'c1', parent: 'g1' });
-    const resolved = resolveGroup(group, [group, c1]);
-
-    expect(groupSubscriptionTargets([resolved])).toEqual([{ group: resolved, events: [] }]);
-  });
-
-  it('does not absorb an event which belongs to a different group', () => {
-    const group1 = makeGroup({ id: 'g1' });
-    const c1 = makeEvent({ id: 'c1', parent: 'g1' });
-    const group2 = makeGroup({ id: 'g2' });
-    const c2 = makeEvent({ id: 'c2', parent: 'g2' });
-    const flat = [group1, c1, group2, c2];
-    const resolved1 = resolveGroup(group1, flat);
-    const resolved2 = resolveGroup(group2, flat);
-
-    expect(groupSubscriptionTargets([resolved1, c1, resolved2, c2])).toEqual([
-      { group: resolved1, events: [c1] },
-      { group: resolved2, events: [c2] },
-    ]);
-  });
-
-  it('does not absorb an event whose parent group is not subscribed', () => {
-    const group1 = makeGroup({ id: 'g1' });
-    const c1 = makeEvent({ id: 'c1', parent: 'g1' });
-    const group2 = makeGroup({ id: 'g2' });
-    const c2 = makeEvent({ id: 'c2', parent: 'g2' });
-    const resolved1 = resolveGroup(group1, [group1, c1, group2, c2]);
-
-    // only the first group is subscribed, so the second group's child stands alone
-    expect(groupSubscriptionTargets([resolved1, c1, c2])).toEqual([
-      { group: resolved1, events: [c1] },
-      { group: null, events: [c2] },
-    ]);
-  });
-
-  it('closes a section when an ungrouped event follows a group', () => {
-    const group = makeGroup({ id: 'g1' });
-    const c1 = makeEvent({ id: 'c1', parent: 'g1' });
-    const e1 = makeEvent({ id: 'e1' });
-    const resolved = resolveGroup(group, [group, c1]);
-
-    expect(groupSubscriptionTargets([resolved, c1, e1])).toEqual([
-      { group: resolved, events: [c1] },
-      { group: null, events: [e1] },
-    ]);
-  });
-});
@@ -252,44 +252,6 @@ export function resolveSubscriptionTarget(
  };
 }

-/**
- * A subscribed group along with the subscribed events which belong to it.
- * Events without a subscribed parent group form their own section with no group.
- */
-export type CountdownSection = {
-  group: CountdownTarget | null;
-  events: CountdownTarget[];
-};
-
-/**
- * Folds the flat, rundown ordered subscription targets into sections.
- * A group opens a section which absorbs the following targets that declare it as parent,
- * which allows the group to be rendered as a sticky header for its own events.
- */
-export function groupSubscriptionTargets(targets: CountdownTarget[]): CountdownSection[] {
-  const sections: CountdownSection[] = [];
-  let openSection: CountdownSection | null = null;
-
-  for (const target of targets) {
-    // resolveSubscriptionTarget spreads the first child, so we cannot rely on the entry type here
-    if (target.isGroup) {
-      openSection = { group: target, events: [] };
-      sections.push(openSection);
-      continue;
-    }
-
-    if (openSection?.group && target.parent === openSection.group.id) {
-      openSection.events.push(target);
-      continue;
-    }
-
-    openSection = null;
-    sections.push({ group: null, events: [target] });
-  }
-
-  return sections;
-}
-
 export function extendEventData(
  event: CountdownTarget,
  currentDay: number,
@@ -0,0 +1,201 @@
+@use '@/theme/viewerDefs' as *;
+
+.teleprompter {
+  --tp-flip-x: 1;
+  --tp-flip-y: 1;
+
+  /* Keep shared stage-screen settings usable on smaller clients. */
+  --tp-font-size: min(var(--tp-configured-font-size), 8vw);
+
+  position: relative;
+  height: 100dvh;
+  width: 100%;
+  overflow: hidden;
+
+  font-family: var(--font-family-override, $viewer-font-family);
+  background: var(--background-color-override, #000000);
+  color: var(--color-override, #ffffff);
+
+  transform: scale(var(--tp-flip-x), var(--tp-flip-y));
+  transform-origin: center center;
+
+  &--flip-h {
+    --tp-flip-x: -1;
+  }
+
+  &--flip-v {
+    --tp-flip-y: -1;
+  }
+}
+
+.teleprompter__scroller {
+  height: 100%;
+  overflow-y: auto;
+  overscroll-behavior: contain;
+
+  /* The animation loop is the only writer of scrollTop. */
+  overflow-anchor: none;
+  scroll-behavior: auto;
+
+  scrollbar-width: none;
+  &::-webkit-scrollbar {
+    display: none;
+  }
+}
+
+.teleprompter__content {
+  width: var(--tp-text-width);
+  margin-inline: auto;
+
+  font-size: var(--tp-font-size);
+  line-height: var(--tp-line-height);
+
+  /* Percent padding resolves against width, so use viewport-height units. */
+  padding-top: calc(var(--tp-reading-line) * 1dvh);
+  padding-bottom: calc(100dvh - var(--tp-reading-line) * 1dvh);
+}
+
+.teleprompter__block {
+  margin-bottom: 1em;
+
+  &[data-loaded] .teleprompter__heading {
+    color: $accent-color;
+  }
+}
+
+.teleprompter__group {
+  font-size: 0.34em;
+  text-transform: uppercase;
+  letter-spacing: 0.1em;
+  color: $viewer-label-color;
+  margin-bottom: 0.35em;
+}
+
+.teleprompter__heading {
+  font-size: 0.38em;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+  color: $viewer-secondary-color;
+  margin-bottom: 0.3em;
+}
+
+.teleprompter__body {
+  white-space: pre-wrap;
+  overflow-wrap: break-word;
+}
+
+.teleprompter__dim {
+  position: absolute;
+  inset: 0 0 auto 0;
+  height: calc(var(--tp-reading-line) * 1%);
+  pointer-events: none;
+  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0));
+}
+
+.teleprompter__reading-line {
+  position: absolute;
+  top: calc(var(--tp-reading-line) * 1%);
+  left: 0;
+  right: 0;
+  width: var(--tp-text-width);
+  margin-inline: auto;
+  height: calc(var(--tp-font-size) * var(--tp-line-height));
+  pointer-events: none;
+}
+
+.teleprompter__reading-marker {
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  background: $accent-color;
+  clip-path: polygon(0 0, 100% 50%, 0 100%);
+  font-size: var(--tp-font-size);
+
+  --tp-gutter: max(0px, calc((100vw - 100%) / 2));
+  width: min(1.2em, calc(var(--tp-gutter) * 0.6));
+  right: calc(100% + var(--tp-gutter) * 0.2);
+}
+
+.teleprompter__controls {
+  position: absolute;
+  bottom: min(2vh, 16px);
+  left: 50%;
+
+  /* Cancel the view flip so controls remain readable to the operator. */
+  transform: translateX(-50%) scale(var(--tp-flip-x), var(--tp-flip-y));
+
+  display: flex;
+  align-items: center;
+  gap: min(1vh, 8px);
+  padding: min(1vh, 8px) clamp(8px, 1vw, 16px);
+
+  background: rgba(white, 8%);
+  border-radius: $element-border-radius;
+  backdrop-filter: blur(6px);
+
+  opacity: 1;
+  transition: opacity $viewer-transition-time;
+
+  &--idle {
+    opacity: 0;
+    pointer-events: none;
+  }
+}
+
+.teleprompter__speed {
+  display: flex;
+  align-items: baseline;
+  gap: 0.2em;
+  min-width: 4em;
+  justify-content: center;
+  font-size: clamp(14px, 1.4vw, 22px);
+  font-variant-numeric: tabular-nums;
+}
+
+.teleprompter__speed-unit {
+  font-size: 0.6em;
+  color: $viewer-label-color;
+}
+
+.teleprompter__help {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.75);
+}
+
+.teleprompter__help-card {
+  position: fixed;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+
+  width: min(92vw, 32rem);
+  max-height: 85dvh;
+  overflow-y: auto;
+  padding: 1.5rem;
+
+  background: $viewer-background-color;
+  color: $viewer-color;
+  border-radius: $element-border-radius;
+  font-size: 1rem;
+}
+
+.teleprompter__help-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+  margin-bottom: 1.25rem;
+}
+
+.teleprompter__help-title {
+  font-size: 1.25rem;
+  font-weight: 600;
+}
+
+.teleprompter__help-groups {
+  --shortcut-title-color: #{$viewer-label-color};
+  --shortcut-label-color: #{$viewer-secondary-color};
+  --shortcut-separator-color: #{$viewer-label-color};
+}
@@ -0,0 +1,175 @@
+import { OntimeView } from 'ontime-types';
+import { type CSSProperties, useState } from 'react';
+
+import EmptyPage from '../../common/components/state/EmptyPage';
+import ViewParamsEditor from '../../common/components/view-params-editor/ViewParamsEditor';
+import { useSelectedEventId } from '../../common/hooks/useSocket';
+import { useWindowTitle } from '../../common/hooks/useWindowTitle';
+import { useViewOptionsStore } from '../../common/stores/viewOptions';
+import { cx } from '../../common/utils/styleUtils';
+import Loader from '../common/loader/Loader';
+import ControlOverlay from './control-overlay/ControlOverlay';
+import HelpOverlay from './help-overlay/HelpOverlay';
+import ScriptBlockView from './script-block/ScriptBlock';
+import { defaults, getTeleprompterOptions, useTeleprompterOptions } from './teleprompter.options';
+import { stepFontSize } from './teleprompter.scroll';
+import { buildScript, composeFlip } from './teleprompter.utils';
+import { useSyncTeleprompterParams } from './useSyncTeleprompterParams';
+import { useTeleprompterControls } from './useTeleprompterControls';
+import { type TeleprompterData, useTeleprompterData } from './useTeleprompterData';
+import { useTeleprompterScroll } from './useTeleprompterScroll';
+
+import './Teleprompter.scss';
+
+export default function TeleprompterLoader() {
+  const { data, status } = useTeleprompterData();
+
+  useWindowTitle('Teleprompter');
+
+  if (status === 'pending') {
+    return <Loader />;
+  }
+
+  if (status === 'error') {
+    return <EmptyPage variant='error' text='There was an error fetching data, please refresh the page.' />;
+  }
+
+  return <Teleprompter {...data} />;
+}
+
+function Teleprompter({ rundown, rundownMetadata, customFields }: TeleprompterData) {
+  'use memo';
+
+  const options = useTeleprompterOptions();
+  const selectedEventId = useSelectedEventId();
+  const isMirrored = useViewOptionsStore((state) => state.mirror);
+
+  const [showHelp, setShowHelp] = useState(false);
+
+  const fromParams = { flipH: options.flipH, flipV: options.flipV, fontSize: options.fontSize };
+  const paramsKey = `${fromParams.flipH}|${fromParams.flipV}|${fromParams.fontSize}`;
+
+  const [live, setLive] = useState(fromParams);
+  const [seededFrom, setSeededFrom] = useState(paramsKey);
+  // Reset live controls before commit when the URL configuration changes.
+  if (seededFrom !== paramsKey) {
+    setSeededFrom(paramsKey);
+    setLive(fromParams);
+  }
+
+  const viewOptions = getTeleprompterOptions(customFields);
+
+  const blocks = buildScript(rundown, rundownMetadata, customFields, {
+    scriptSource: options.scriptSource,
+    heading: options.heading,
+    hideEmpty: options.hideEmpty,
+    showGroups: options.showGroups,
+  });
+
+  const {
+    scrollerRef,
+    contentRef,
+    registerBlock,
+    handleUserScroll,
+    controller,
+    isRunning,
+    speed,
+    followLocked,
+    atEnd,
+  } = useTeleprompterScroll({
+    initialSpeed: options.speed,
+    followLoaded: options.followLoaded,
+    selectedEventId,
+    readingLinePos: options.readingLinePos,
+    blocks,
+  });
+
+  const handleFlip = (axis: 'h' | 'v') =>
+    setLive((current) => {
+      const key = axis === 'h' ? 'flipH' : 'flipV';
+      return { ...current, [key]: !current[key] };
+    });
+
+  const handleFontSize = (steps: number) =>
+    setLive((current) => ({ ...current, fontSize: stepFontSize(current.fontSize, steps) }));
+
+  const handleResetFontSize = () => setLive((current) => ({ ...current, fontSize: defaults.fontSize }));
+  const handleToggleHelp = () => setShowHelp((current) => !current);
+
+  useSyncTeleprompterParams({ speed, fontSize: live.fontSize, flipH: live.flipH, flipV: live.flipV });
+
+  useTeleprompterControls({
+    controller,
+    isHelpOpen: showHelp,
+    onFlip: handleFlip,
+    onFontSize: handleFontSize,
+    onResetFontSize: handleResetFontSize,
+    onToggleHelp: handleToggleHelp,
+  });
+
+  const hasScriptSource = options.scriptSource !== 'none';
+
+  const effectiveFlip = composeFlip(live.flipH, live.flipV, isMirrored);
+
+  const viewStyles = {
+    '--tp-configured-font-size': `${live.fontSize}px`,
+    '--tp-line-height': options.lineHeight,
+    '--tp-text-width': `${options.textWidth}%`,
+    '--tp-reading-line': options.readingLinePos,
+  } as CSSProperties;
+
+  return (
+    <div
+      className={cx([
+        'teleprompter',
+        effectiveFlip.flipH && 'teleprompter--flip-h',
+        effectiveFlip.flipV && 'teleprompter--flip-v',
+      ])}
+      style={viewStyles}
+      data-testid='teleprompter-view'
+    >
+      <ViewParamsEditor target={OntimeView.Teleprompter} viewOptions={viewOptions} />
+
+      {!hasScriptSource ? (
+        <EmptyPage text='Select which field holds the script in the view options' />
+      ) : blocks.length === 0 ? (
+        <EmptyPage text='There is no script text in the selected field' />
+      ) : (
+        <>
+          <div
+            className='teleprompter__scroller'
+            data-testid='teleprompter-scroller'
+            ref={scrollerRef}
+            onWheel={handleUserScroll}
+            onTouchMove={handleUserScroll}
+            onPointerDown={handleUserScroll}
+          >
+            <div className='teleprompter__content' ref={contentRef}>
+              {blocks.map((block) => (
+                <ScriptBlockView key={block.id} block={block} registerRef={registerBlock} />
+              ))}
+            </div>
+          </div>
+
+          <div className='teleprompter__dim' />
+          {options.readingLine && (
+            <div className='teleprompter__reading-line'>
+              <span className='teleprompter__reading-marker' />
+            </div>
+          )}
+
+          <ControlOverlay
+            isRunning={isRunning}
+            speed={speed}
+            canReengageFollow={followLocked && options.followLoaded}
+            atEnd={atEnd}
+            controller={controller}
+            onToggleHelp={handleToggleHelp}
+          />
+        </>
+      )}
+
+      <HelpOverlay isOpen={showHelp} onClose={handleToggleHelp} />
+    </div>
+  );
+}
@@ -0,0 +1,96 @@
+import { resolveTeleprompterAction, type TeleprompterKeyEvent } from '../teleprompter.keymap';
+import { SPEED_STEP, SPEED_STEP_COARSE } from '../teleprompter.scroll';
+
+function makeEvent(overrides: Partial<TeleprompterKeyEvent>): TeleprompterKeyEvent {
+  return {
+    code: '',
+    key: '',
+    shiftKey: false,
+    ctrlKey: false,
+    metaKey: false,
+    altKey: false,
+    repeat: false,
+    ...overrides,
+  };
+}
+
+describe('resolveTeleprompterAction()', () => {
+  test('space toggles playback', () => {
+    expect(resolveTeleprompterAction(makeEvent({ code: 'Space' }))).toEqual({ type: 'togglePlay' });
+  });
+
+  test('ignores a repeating space', () => {
+    expect(resolveTeleprompterAction(makeEvent({ code: 'Space', repeat: true }))).toBeNull();
+  });
+
+  test('vertical arrows nudge by a line', () => {
+    expect(resolveTeleprompterAction(makeEvent({ code: 'ArrowDown' }))).toEqual({ type: 'nudge', lines: 1 });
+    expect(resolveTeleprompterAction(makeEvent({ code: 'ArrowUp' }))).toEqual({ type: 'nudge', lines: -1 });
+  });
+
+  test('a repeating arrow still nudges, so the key can be held', () => {
+    expect(resolveTeleprompterAction(makeEvent({ code: 'ArrowDown', repeat: true }))).toEqual({
+      type: 'nudge',
+      lines: 1,
+    });
+  });
+
+  test('page keys jump a screen', () => {
+    expect(resolveTeleprompterAction(makeEvent({ code: 'PageDown' }))).toEqual({ type: 'page', direction: 1 });
+    expect(resolveTeleprompterAction(makeEvent({ code: 'PageUp' }))).toEqual({ type: 'page', direction: -1 });
+  });
+
+  test('horizontal arrows change speed', () => {
+    expect(resolveTeleprompterAction(makeEvent({ code: 'ArrowRight' }))).toEqual({ type: 'speed', delta: SPEED_STEP });
+    expect(resolveTeleprompterAction(makeEvent({ code: 'ArrowLeft' }))).toEqual({ type: 'speed', delta: -SPEED_STEP });
+  });
+
+  test('shift makes the speed step coarse', () => {
+    expect(resolveTeleprompterAction(makeEvent({ code: 'ArrowRight', shiftKey: true }))).toEqual({
+      type: 'speed',
+      delta: SPEED_STEP_COARSE,
+    });
+    expect(resolveTeleprompterAction(makeEvent({ code: 'ArrowLeft', shiftKey: true }))).toEqual({
+      type: 'speed',
+      delta: -SPEED_STEP_COARSE,
+    });
+  });
+
+  test('home rewinds and escape rewinds and stops', () => {
+    expect(resolveTeleprompterAction(makeEvent({ code: 'Home' }))).toEqual({ type: 'rewind' });
+    expect(resolveTeleprompterAction(makeEvent({ code: 'Escape' }))).toEqual({ type: 'rewindAndPause' });
+    expect(resolveTeleprompterAction(makeEvent({ code: 'End' }))).toEqual({ type: 'jumpToEnd' });
+  });
+
+  test('f flips, shift+f flips the other axis', () => {
+    expect(resolveTeleprompterAction(makeEvent({ key: 'f' }))).toEqual({ type: 'flip', axis: 'h' });
+    expect(resolveTeleprompterAction(makeEvent({ key: 'F', shiftKey: true }))).toEqual({ type: 'flip', axis: 'v' });
+  });
+
+  test('changes and resets the font size', () => {
+    expect(resolveTeleprompterAction(makeEvent({ key: '+' }))).toEqual({ type: 'fontSize', steps: 1 });
+    expect(resolveTeleprompterAction(makeEvent({ key: '=' }))).toEqual({ type: 'fontSize', steps: 1 });
+    expect(resolveTeleprompterAction(makeEvent({ key: '-' }))).toEqual({ type: 'fontSize', steps: -1 });
+    expect(resolveTeleprompterAction(makeEvent({ key: '_' }))).toEqual({ type: 'fontSize', steps: -1 });
+    expect(resolveTeleprompterAction(makeEvent({ key: '0' }))).toEqual({ type: 'resetFontSize' });
+  });
+
+  test('l re-engages the follow and ? shows the help', () => {
+    expect(resolveTeleprompterAction(makeEvent({ key: 'l' }))).toEqual({ type: 'reengageFollow' });
+    expect(resolveTeleprompterAction(makeEvent({ key: '?', shiftKey: true }))).toEqual({ type: 'toggleHelp' });
+  });
+
+  test('never shadows a shortcut which carries a modifier', () => {
+    expect(resolveTeleprompterAction(makeEvent({ key: ',', metaKey: true }))).toBeNull();
+    expect(resolveTeleprompterAction(makeEvent({ code: 'Space', ctrlKey: true }))).toBeNull();
+    expect(resolveTeleprompterAction(makeEvent({ code: 'ArrowRight', altKey: true }))).toBeNull();
+  });
+
+  test('ignores keys it does not bind', () => {
+    expect(resolveTeleprompterAction(makeEvent({ code: 'KeyQ', key: 'q' }))).toBeNull();
+  });
+
+  test('leaves Enter alone, so a focused transport button can still be pressed', () => {
+    expect(resolveTeleprompterAction(makeEvent({ code: 'Enter', key: 'Enter' }))).toBeNull();
+  });
+});
@@ -0,0 +1,109 @@
+import { getOptionsFromParams, getTeleprompterOptions } from '../teleprompter.options';
+import { DEFAULT_SPEED, MAX_SPEED, MIN_SPEED } from '../teleprompter.scroll';
+
+describe('getOptionsFromParams()', () => {
+  test('provides sensible defaults with no params', () => {
+    const options = getOptionsFromParams(new URLSearchParams());
+
+    expect(options).toMatchObject({
+      scriptSource: 'none',
+      heading: 'title',
+      hideEmpty: true,
+      showGroups: true,
+      speed: DEFAULT_SPEED,
+      followLoaded: true,
+      fontSize: 52,
+      lineHeight: 1.3,
+      textWidth: 80,
+      readingLine: true,
+      readingLinePos: 25,
+      flipH: false,
+      flipV: false,
+    });
+  });
+
+  test('reads the script source verbatim so it can be handed to getPropertyValue', () => {
+    const options = getOptionsFromParams(new URLSearchParams('script=custom-prompter'));
+    expect(options.scriptSource).toBe('custom-prompter');
+  });
+
+  test('booleans which default to true can be turned off', () => {
+    const options = getOptionsFromParams(
+      new URLSearchParams('hideEmpty=false&showGroups=false&followLoaded=false&readingLine=false'),
+    );
+
+    expect(options).toMatchObject({
+      hideEmpty: false,
+      showGroups: false,
+      followLoaded: false,
+      readingLine: false,
+    });
+  });
+
+  test('booleans which default to false can be turned on', () => {
+    const options = getOptionsFromParams(new URLSearchParams('flipH=true&flipV=true'));
+
+    expect(options).toMatchObject({
+      flipH: true,
+      flipV: true,
+    });
+  });
+
+  test('clamps the speed to the usable range', () => {
+    expect(getOptionsFromParams(new URLSearchParams('speed=1000')).speed).toBe(MAX_SPEED);
+    expect(getOptionsFromParams(new URLSearchParams('speed=0')).speed).toBe(MIN_SPEED);
+  });
+
+  test('falls back to the default for a non numeric value', () => {
+    expect(getOptionsFromParams(new URLSearchParams('speed=fast')).speed).toBe(DEFAULT_SPEED);
+    expect(getOptionsFromParams(new URLSearchParams('speed=')).speed).toBe(DEFAULT_SPEED);
+    expect(getOptionsFromParams(new URLSearchParams('fontSize=huge')).fontSize).toBe(52);
+  });
+
+  test('rejects an unknown value for an enumerated option', () => {
+    expect(getOptionsFromParams(new URLSearchParams('heading=banana')).heading).toBe('title');
+  });
+
+  test('preset values take precedence over the search params', () => {
+    const options = getOptionsFromParams(
+      new URLSearchParams('speed=10&script=custom-a'),
+      new URLSearchParams('speed=20&script=custom-b'),
+    );
+
+    expect(options.speed).toBe(20);
+    expect(options.scriptSource).toBe('custom-b');
+  });
+});
+
+describe('getTeleprompterOptions()', () => {
+  test('every declared default is what parsing an empty query produces', () => {
+    const parsed = getOptionsFromParams(new URLSearchParams()) as Record<string, unknown>;
+    const parsedByParamId: Record<string, unknown> = { ...parsed, script: parsed.scriptSource };
+
+    const declared = getTeleprompterOptions({}).flatMap((section) => section.options);
+    expect(declared.length).toBeGreaterThan(0);
+
+    for (const field of declared) {
+      if (!('defaultValue' in field) || field.defaultValue === undefined) continue;
+      const expected = field.defaultValue;
+      expect({ id: field.id, value: parsedByParamId[field.id] }).toEqual({ id: field.id, value: expected });
+    }
+  });
+});
+
+describe('option value round trip', () => {
+  test('every value the editor offers survives parsing', () => {
+    const selects = getTeleprompterOptions({})
+      .flatMap((section) => section.options)
+      .filter((field) => field.type === 'option' && field.id !== 'script');
+
+    expect(selects.length).toBeGreaterThan(0);
+
+    for (const field of selects) {
+      for (const { value } of field.values) {
+        const parsed = getOptionsFromParams(new URLSearchParams(`${field.id}=${value}`)) as Record<string, unknown>;
+        expect({ id: field.id, value, parsed: parsed[field.id] }).toEqual({ id: field.id, value, parsed: value });
+      }
+    }
+  });
+});
@@ -0,0 +1,139 @@
+import {
+  advance,
+  clampSpeed,
+  easeCatchUp,
+  frameDeltaSeconds,
+  linesPerMinuteToPxPerSecond,
+  MAX_FONT_SIZE,
+  MAX_FRAME_DELTA_MS,
+  MAX_SPEED,
+  MIN_FONT_SIZE,
+  MIN_SPEED,
+  stepFontSize,
+} from '../teleprompter.scroll';
+
+describe('linesPerMinuteToPxPerSecond()', () => {
+  test('converts a read rate into a pixel rate', () => {
+    // 30 lines a minute over a 64px line is half a line a second
+    expect(linesPerMinuteToPxPerSecond(30, 64)).toBe(32);
+  });
+});
+
+describe('stepFontSize()', () => {
+  test('steps by a ratio, so a press is the same visual change at any size', () => {
+    // a fixed pixel step would be a big jump at 20px and imperceptible at 200px
+    expect(stepFontSize(100, 1)).toBe(110);
+    expect(stepFontSize(20, 1)).toBe(22);
+  });
+
+  test('shrinking undoes growing', () => {
+    expect(stepFontSize(stepFontSize(50, 1), -1)).toBe(50);
+  });
+
+  test('stays inside the range the option accepts', () => {
+    expect(stepFontSize(MAX_FONT_SIZE, 5)).toBe(MAX_FONT_SIZE);
+    expect(stepFontSize(MIN_FONT_SIZE, -5)).toBe(MIN_FONT_SIZE);
+  });
+});
+
+describe('clampSpeed()', () => {
+  test('bounds the speed to the usable range', () => {
+    expect(clampSpeed(MIN_SPEED - 10)).toBe(MIN_SPEED);
+    expect(clampSpeed(MAX_SPEED + 10)).toBe(MAX_SPEED);
+    expect(clampSpeed(30)).toBe(30);
+  });
+
+  test('falls back to the minimum for a non number, rather than stalling at zero', () => {
+    expect(clampSpeed(Number.NaN)).toBe(MIN_SPEED);
+  });
+});
+
+describe('frameDeltaSeconds()', () => {
+  test('clamps a long gap so returning to a background tab cannot teleport the script', () => {
+    // requestAnimationFrame is suspended while hidden, so the first timestamp
+    // back can be minutes stale
+    expect(frameDeltaSeconds(1000 / 60)).toBeCloseTo(1 / 60, 6);
+    expect(frameDeltaSeconds(60_000)).toBe(MAX_FRAME_DELTA_MS / 1000);
+  });
+
+  test('ignores nonsense deltas', () => {
+    expect(frameDeltaSeconds(-5)).toBe(0);
+    expect(frameDeltaSeconds(Number.NaN)).toBe(0);
+  });
+});
+
+describe('advance()', () => {
+  test('accumulates sub-pixel movement without losing any to rounding', () => {
+    // 32px/s sampled at 60fps is 0.53px a frame: rounding each frame would stall
+    const pxPerSecond = 32;
+    const frame = 1 / 60;
+    let position = 0;
+
+    for (let i = 0; i < 100; i += 1) {
+      position = advance(position, pxPerSecond, frame, 10_000).position;
+    }
+
+    expect(position).toBeCloseTo((pxPerSecond * 100) / 60, 5);
+  });
+
+  test('reports the end of the script once the bottom is reached', () => {
+    expect(advance(499, 100, 1, 500).atEnd).toBe(true);
+    expect(advance(100, 100, 1, 500).atEnd).toBe(false);
+  });
+
+  test('reports the end without bounding the position, which the caller owns', () => {
+    // the loop has to bound the position anyway, for nudges and for a document
+    // which shrank, so this does not do it a second time
+    expect(advance(490, 100, 1, 500)).toEqual({ position: 590, atEnd: true });
+  });
+
+  test('never reports the end for a document which does not overflow', () => {
+    // it may simply not have been measured yet, and stopping playback on an
+    // unmeasured document would look like the prompter refusing to run
+    expect(advance(0, 100, 1, 0).atEnd).toBe(false);
+  });
+});
+
+describe('easeCatchUp()', () => {
+  test('approaches the target monotonically from either side', () => {
+    let fromAbove = 500;
+    let fromBelow = 0;
+    let previousAbove = 501;
+    let previousBelow = -1;
+
+    for (let i = 0; i < 20; i += 1) {
+      fromBelow = easeCatchUp(fromBelow, 500, 1 / 60);
+      fromAbove = easeCatchUp(fromAbove, 0, 1 / 60);
+
+      expect(fromBelow).toBeGreaterThan(previousBelow);
+      expect(fromBelow).toBeLessThanOrEqual(500);
+      expect(fromAbove).toBeLessThan(previousAbove);
+      expect(fromAbove).toBeGreaterThanOrEqual(0);
+
+      previousBelow = fromBelow;
+      previousAbove = fromAbove;
+    }
+  });
+
+  test('settles exactly on the target instead of creeping forever', () => {
+    let position = 0;
+    for (let i = 0; i < 300; i += 1) {
+      position = easeCatchUp(position, 500, 1 / 60);
+    }
+    expect(position).toBe(500);
+  });
+
+  test('is framerate independent, so a jump takes the same time on any display', () => {
+    let atSixty = 0;
+    for (let i = 0; i < 60; i += 1) {
+      atSixty = easeCatchUp(atSixty, 1000, 1 / 60);
+    }
+
+    let atThirty = 0;
+    for (let i = 0; i < 30; i += 1) {
+      atThirty = easeCatchUp(atThirty, 1000, 1 / 30);
+    }
+
+    expect(atSixty).toBeCloseTo(atThirty, 3);
+  });
+});
@@ -0,0 +1,218 @@
+import { type CustomFields, type OntimeEntry, type Rundown, SupportedEntry } from 'ontime-types';
+
+import type { RundownMetadata, RundownMetadataObject } from '../../../common/utils/rundownMetadata';
+import { buildScript, composeFlip } from '../teleprompter.utils';
+
+function makeEvent(id: string, overrides: Partial<OntimeEntry> = {}): OntimeEntry {
+  return {
+    type: SupportedEntry.Event,
+    id,
+    cue: id.toUpperCase(),
+    title: `Title ${id}`,
+    note: `Note ${id}`,
+    skip: false,
+    custom: { script: `Script ${id}` },
+    parent: null,
+    ...overrides,
+  } as OntimeEntry;
+}
+
+function makeGroup(id: string, title: string, entries: string[]): OntimeEntry {
+  return { type: SupportedEntry.Group, id, title, entries } as OntimeEntry;
+}
+
+function makeMetadata(overrides: Partial<RundownMetadata> = {}): RundownMetadata {
+  return { isPast: false, isLoaded: false, groupId: null, ...overrides } as RundownMetadata;
+}
+
+function makeRundown(entries: OntimeEntry[], flatOrder?: string[]): Rundown {
+  return {
+    id: 'default',
+    title: 'test',
+    order: flatOrder ?? entries.map((entry) => entry.id),
+    flatOrder: flatOrder ?? entries.map((entry) => entry.id),
+    entries: Object.fromEntries(entries.map((entry) => [entry.id, entry])),
+    revision: 1,
+  };
+}
+
+const customFields: CustomFields = {
+  script: { type: 'text', colour: '', label: 'Script' },
+  poster: { type: 'image', colour: '', label: 'Poster' },
+};
+
+const defaultOptions = {
+  scriptSource: 'custom-script',
+  heading: 'title' as const,
+  hideEmpty: true,
+  showGroups: true,
+};
+
+function metadataFor(ids: string[], overrides: Record<string, Partial<RundownMetadata>> = {}): RundownMetadataObject {
+  return Object.fromEntries(ids.map((id) => [id, makeMetadata(overrides[id])]));
+}
+
+describe('buildScript()', () => {
+  test('resolves the script from the selected custom field, in rundown order', () => {
+    const rundown = makeRundown([makeEvent('a'), makeEvent('b')]);
+    const blocks = buildScript(rundown, metadataFor(['a', 'b']), customFields, defaultOptions);
+
+    expect(blocks).toHaveLength(2);
+    expect(blocks.map((block) => block.id)).toEqual(['a', 'b']);
+    expect(blocks[0].text).toBe('Script a');
+  });
+
+  test('returns nothing when no script source is selected', () => {
+    const rundown = makeRundown([makeEvent('a')]);
+    expect(buildScript(rundown, metadataFor(['a']), customFields, { ...defaultOptions, scriptSource: 'none' })).toEqual(
+      [],
+    );
+  });
+
+  test('refuses an image custom field, which the select filters but the URL does not', () => {
+    const rundown = makeRundown([makeEvent('a', { custom: { poster: 'https://example.com/a.png' } })]);
+    const blocks = buildScript(rundown, metadataFor(['a']), customFields, {
+      ...defaultOptions,
+      scriptSource: 'custom-poster',
+    });
+
+    expect(blocks).toEqual([]);
+  });
+
+  test('reads the note and the title as script sources', () => {
+    const rundown = makeRundown([makeEvent('a')]);
+    expect(
+      buildScript(rundown, metadataFor(['a']), customFields, { ...defaultOptions, scriptSource: 'note' })[0].text,
+    ).toBe('Note a');
+    expect(
+      buildScript(rundown, metadataFor(['a']), customFields, { ...defaultOptions, scriptSource: 'title' })[0].text,
+    ).toBe('Title a');
+  });
+
+  test('skips entries which are not events', () => {
+    const rundown = makeRundown([
+      makeEvent('a'),
+      { type: SupportedEntry.Delay, id: 'd', duration: 10 } as OntimeEntry,
+      { type: SupportedEntry.Milestone, id: 'm', title: 'milestone' } as OntimeEntry,
+    ]);
+
+    const blocks = buildScript(rundown, metadataFor(['a', 'd', 'm']), customFields, defaultOptions);
+    expect(blocks.map((block) => block.id)).toEqual(['a']);
+  });
+
+  test('skips events flagged as skipped', () => {
+    const rundown = makeRundown([makeEvent('a', { skip: true }), makeEvent('b')]);
+    const blocks = buildScript(rundown, metadataFor(['a', 'b']), customFields, defaultOptions);
+    expect(blocks.map((block) => block.id)).toEqual(['b']);
+  });
+
+  test('hideEmpty drops events with no script text', () => {
+    const rundown = makeRundown([makeEvent('a', { custom: { script: '   ' } }), makeEvent('b')]);
+
+    expect(buildScript(rundown, metadataFor(['a', 'b']), customFields, defaultOptions).map((b) => b.id)).toEqual(['b']);
+    expect(
+      buildScript(rundown, metadataFor(['a', 'b']), customFields, { ...defaultOptions, hideEmpty: false }).map(
+        (b) => b.id,
+      ),
+    ).toEqual(['a', 'b']);
+  });
+
+  test('marks the block belonging to the loaded event', () => {
+    const rundown = makeRundown([makeEvent('a'), makeEvent('b')]);
+    const metadata = metadataFor(['a', 'b'], { b: { isLoaded: true } });
+
+    const blocks = buildScript(rundown, metadata, customFields, defaultOptions);
+    expect(blocks.map((block) => block.isLoaded)).toEqual([false, true]);
+  });
+
+  test('emits a group title once, on the first block of the group', () => {
+    const rundown = makeRundown(
+      [makeGroup('g', 'Morning session', ['a', 'b']), makeEvent('a'), makeEvent('b')],
+      ['g', 'a', 'b'],
+    );
+    const metadata = metadataFor(['g', 'a', 'b'], { a: { groupId: 'g' }, b: { groupId: 'g' } });
+
+    const blocks = buildScript(rundown, metadata, customFields, defaultOptions);
+    expect(blocks.map((block) => block.groupTitle)).toEqual(['Morning session', null]);
+  });
+
+  test('emits each group title as the script moves between groups', () => {
+    const rundown = makeRundown(
+      [
+        makeGroup('g1', 'Morning session', ['a']),
+        makeEvent('a'),
+        makeGroup('g2', 'Afternoon session', ['b']),
+        makeEvent('b'),
+      ],
+      ['g1', 'a', 'g2', 'b'],
+    );
+    const metadata = metadataFor(['g1', 'a', 'g2', 'b'], { a: { groupId: 'g1' }, b: { groupId: 'g2' } });
+
+    const blocks = buildScript(rundown, metadata, customFields, defaultOptions);
+    expect(blocks.map((block) => block.groupTitle)).toEqual(['Morning session', 'Afternoon session']);
+  });
+
+  test('repeats a group title when the script returns to it after an ungrouped event', () => {
+    // the reader has lost the context by then, so naming the group again is right
+    const rundown = makeRundown(
+      [makeGroup('g', 'Morning session', ['a', 'c']), makeEvent('a'), makeEvent('b'), makeEvent('c')],
+      ['g', 'a', 'b', 'c'],
+    );
+    const metadata = metadataFor(['g', 'a', 'b', 'c'], { a: { groupId: 'g' }, c: { groupId: 'g' } });
+
+    const blocks = buildScript(rundown, metadata, customFields, defaultOptions);
+    expect(blocks.map((block) => block.groupTitle)).toEqual(['Morning session', null, 'Morning session']);
+  });
+
+  test('does not emit group titles when they are turned off', () => {
+    const rundown = makeRundown([makeGroup('g', 'Morning session', ['a']), makeEvent('a')], ['g', 'a']);
+    const metadata = metadataFor(['g', 'a'], { a: { groupId: 'g' } });
+
+    const blocks = buildScript(rundown, metadata, customFields, { ...defaultOptions, showGroups: false });
+    expect(blocks[0].groupTitle).toBeNull();
+  });
+
+  describe('headings', () => {
+    const rundown = makeRundown([makeEvent('a')]);
+    const metadata = metadataFor(['a']);
+
+    test('shows the title, the cue, both, or nothing', () => {
+      expect(buildScript(rundown, metadata, customFields, { ...defaultOptions, heading: 'title' })[0].heading).toBe(
+        'Title a',
+      );
+      expect(buildScript(rundown, metadata, customFields, { ...defaultOptions, heading: 'cue' })[0].heading).toBe('A');
+      expect(buildScript(rundown, metadata, customFields, { ...defaultOptions, heading: 'both' })[0].heading).toBe(
+        'A · Title a',
+      );
+      expect(buildScript(rundown, metadata, customFields, { ...defaultOptions, heading: 'none' })[0].heading).toBe('');
+    });
+
+    test('leaves no dangling separator when an event has no cue', () => {
+      const noCue = makeRundown([makeEvent('a', { cue: '' })]);
+      expect(buildScript(noCue, metadata, customFields, { ...defaultOptions, heading: 'both' })[0].heading).toBe(
+        'Title a',
+      );
+    });
+  });
+});
+
+describe('composeFlip()', () => {
+  test('passes the per view flips through when Flip Screen is off', () => {
+    expect(composeFlip(false, false, false)).toEqual({ flipH: false, flipV: false });
+    expect(composeFlip(true, false, false)).toEqual({ flipH: true, flipV: false });
+    expect(composeFlip(false, true, false)).toEqual({ flipH: false, flipV: true });
+  });
+
+  test('Flip Screen alone flips both axes, matching rotate(180deg) in every other view', () => {
+    expect(composeFlip(false, false, true)).toEqual({ flipH: true, flipV: true });
+  });
+
+  test('a horizontal flip and Flip Screen leave only the vertical axis flipped', () => {
+    // scale(-1, 1) composed with scale(-1, -1) is scale(1, -1)
+    expect(composeFlip(true, false, true)).toEqual({ flipH: false, flipV: true });
+  });
+
+  test('both flips cancel Flip Screen out', () => {
+    expect(composeFlip(true, true, true)).toEqual({ flipH: false, flipV: false });
+  });
+});
@@ -0,0 +1,135 @@
+import type { MouseEvent } from 'react';
+import { IoAdd, IoArrowUp, IoHelpCircleOutline, IoLocate, IoPause, IoPlay, IoRemove } from 'react-icons/io5';
+
+import IconButton from '../../../common/components/buttons/IconButton';
+import Tooltip from '../../../common/components/tooltip/Tooltip';
+import { useFadeOutOnInactivity } from '../../../common/hooks/useFadeOutOnInactivity';
+import { cx } from '../../../common/utils/styleUtils';
+import { SPEED_STEP } from '../teleprompter.scroll';
+import type { TeleprompterController } from '../teleprompter.types';
+
+interface ControlOverlayProps {
+  isRunning: boolean;
+  speed: number;
+  canReengageFollow: boolean;
+  atEnd: boolean;
+  controller: TeleprompterController;
+  onToggleHelp: () => void;
+}
+
+export default function ControlOverlay({
+  isRunning,
+  speed,
+  canReengageFollow,
+  atEnd,
+  controller,
+  onToggleHelp,
+}: ControlOverlayProps) {
+  const isActive = useFadeOutOnInactivity(true);
+
+  // Pointer activation yields focus so the next Space reaches the transport.
+  const press = (action: () => void) => (event: MouseEvent<HTMLButtonElement>) => {
+    if (event.detail > 0) {
+      event.currentTarget.blur();
+    }
+    action();
+  };
+
+  return (
+    <div className={cx(['teleprompter__controls', !isActive && 'teleprompter__controls--idle'])}>
+      <Tooltip
+        text={isRunning ? 'Pause (Space)' : 'Play (Space)'}
+        render={
+          <IconButton
+            variant='subtle-white'
+            size='large'
+            onClick={press(controller.togglePlay)}
+            data-testid='teleprompter-play'
+            aria-label={isRunning ? 'Pause' : 'Play'}
+          />
+        }
+      >
+        {isRunning ? <IoPause /> : <IoPlay />}
+      </Tooltip>
+
+      <Tooltip
+        text='Slow down (Left arrow)'
+        render={
+          <IconButton
+            variant='subtle-white'
+            size='large'
+            onClick={press(() => controller.changeSpeed(-SPEED_STEP))}
+            aria-label='Slow down'
+          />
+        }
+      >
+        <IoRemove />
+      </Tooltip>
+
+      <div className='teleprompter__speed' data-testid='teleprompter-speed'>
+        {speed}
+        <span className='teleprompter__speed-unit'>lpm</span>
+      </div>
+
+      <Tooltip
+        text='Speed up (Right arrow)'
+        render={
+          <IconButton
+            variant='subtle-white'
+            size='large'
+            onClick={press(() => controller.changeSpeed(SPEED_STEP))}
+            aria-label='Speed up'
+          />
+        }
+      >
+        <IoAdd />
+      </Tooltip>
+
+      <Tooltip
+        text='Rewind to the top (Home)'
+        render={
+          <IconButton
+            variant={atEnd ? 'primary' : 'subtle-white'}
+            size='large'
+            onClick={press(() => controller.rewind())}
+            aria-label='Rewind to top'
+          />
+        }
+      >
+        <IoArrowUp />
+      </Tooltip>
+
+      <Tooltip
+        text={
+          canReengageFollow ? 'Jump back to the loaded event and follow it again (L)' : 'Following the loaded event'
+        }
+        render={
+          <IconButton
+            variant={canReengageFollow ? 'primary' : 'subtle-white'}
+            size='large'
+            disabled={!canReengageFollow}
+            onClick={press(controller.reengageFollow)}
+            data-testid='teleprompter-follow'
+            aria-label='Follow the loaded event'
+          />
+        }
+      >
+        <IoLocate />
+      </Tooltip>
+
+      <Tooltip
+        text='Keyboard shortcuts (?)'
+        render={
+          <IconButton
+            variant='subtle-white'
+            size='large'
+            onClick={press(onToggleHelp)}
+            aria-label='Keyboard shortcuts'
+          />
+        }
+      >
+        <IoHelpCircleOutline />
+      </Tooltip>
+    </div>
+  );
+}
@@ -0,0 +1,102 @@
+import { Dialog } from '@base-ui/react/dialog';
+import { IoClose } from 'react-icons/io5';
+
+import IconButton from '../../../common/components/buttons/IconButton';
+import {
+  Combo,
+  Separator,
+  Shortcut,
+  ShortcutGroup,
+  ShortcutGroups,
+} from '../../../common/components/keyboard-shortcuts/KeyboardShortcuts';
+
+interface HelpOverlayProps {
+  isOpen: boolean;
+  onClose: () => void;
+}
+
+export default function HelpOverlay({ isOpen, onClose }: HelpOverlayProps) {
+  return (
+    <Dialog.Root
+      open={isOpen}
+      onOpenChange={(open) => {
+        if (!open) {
+          onClose();
+        }
+      }}
+    >
+      <Dialog.Portal>
+        <Dialog.Backdrop className='teleprompter__help' />
+        <Dialog.Popup className='teleprompter__help-card'>
+          <div className='teleprompter__help-header'>
+            <Dialog.Title className='teleprompter__help-title'>Prompter shortcuts</Dialog.Title>
+            <IconButton variant='subtle-white' size='large' onClick={onClose} aria-label='Close'>
+              <IoClose />
+            </IconButton>
+          </div>
+
+          <ShortcutGroups className='teleprompter__help-groups'>
+            <ShortcutGroup title='Transport'>
+              <Shortcut label='Start / stop scrolling'>
+                <Combo keys={['Space']} />
+              </Shortcut>
+              <Shortcut label='Slower / faster'>
+                <Combo keys={['←']} />
+                <Separator />
+                <Combo keys={['→']} />
+              </Shortcut>
+              <Shortcut label='Larger speed steps'>
+                <Combo keys={['Shift', '←']} />
+                <Separator />
+                <Combo keys={['Shift', '→']} />
+              </Shortcut>
+            </ShortcutGroup>
+
+            <ShortcutGroup title='Navigation'>
+              <Shortcut label='Nudge one line'>
+                <Combo keys={['↑']} />
+                <Separator />
+                <Combo keys={['↓']} />
+              </Shortcut>
+              <Shortcut label='Jump a screen'>
+                <Combo keys={['PgUp']} />
+                <Separator />
+                <Combo keys={['PgDn']} />
+              </Shortcut>
+              <Shortcut label='Jump to top / end'>
+                <Combo keys={['Home']} />
+                <Separator />
+                <Combo keys={['End']} />
+              </Shortcut>
+              <Shortcut label='Rewind and stop'>
+                <Combo keys={['Esc']} />
+              </Shortcut>
+              <Shortcut label='Follow the loaded event again'>
+                <Combo keys={['L']} />
+              </Shortcut>
+            </ShortcutGroup>
+
+            <ShortcutGroup title='Display'>
+              <Shortcut label='Font size'>
+                <Combo keys={['+']} />
+                <Separator />
+                <Combo keys={['-']} />
+              </Shortcut>
+              <Shortcut label='Reset font size'>
+                <Combo keys={['0']} />
+              </Shortcut>
+              <Shortcut label='Flip horizontally / vertically'>
+                <Combo keys={['F']} />
+                <Separator />
+                <Combo keys={['Shift', 'F']} />
+              </Shortcut>
+              <Shortcut label='Show this list'>
+                <Combo keys={['?']} />
+              </Shortcut>
+            </ShortcutGroup>
+          </ShortcutGroups>
+        </Dialog.Popup>
+      </Dialog.Portal>
+    </Dialog.Root>
+  );
+}
@@ -0,0 +1,22 @@
+import type { ScriptBlock } from '../teleprompter.types';
+
+interface ScriptBlockProps {
+  block: ScriptBlock;
+  registerRef: (id: string, element: HTMLElement | null) => void;
+}
+
+export default function ScriptBlockView({ block, registerRef }: ScriptBlockProps) {
+  'use memo';
+
+  return (
+    <section
+      className='teleprompter__block'
+      ref={(element) => registerRef(block.id, element)}
+      data-loaded={block.isLoaded || undefined}
+    >
+      {block.groupTitle && <div className='teleprompter__group'>{block.groupTitle}</div>}
+      {block.heading && <h2 className='teleprompter__heading'>{block.heading}</h2>}
+      <p className='teleprompter__body'>{block.text}</p>
+    </section>
+  );
+}
@@ -0,0 +1,65 @@
+import { SPEED_STEP, SPEED_STEP_COARSE } from './teleprompter.scroll';
+import type { TeleprompterAction } from './teleprompter.types';
+
+export type TeleprompterKeyEvent = {
+  code: string;
+  key: string;
+  shiftKey: boolean;
+  ctrlKey: boolean;
+  metaKey: boolean;
+  altKey: boolean;
+  repeat: boolean;
+};
+
+export function resolveTeleprompterAction(event: TeleprompterKeyEvent): TeleprompterAction | null {
+  if (event.ctrlKey || event.metaKey || event.altKey) {
+    return null;
+  }
+
+  switch (event.code) {
+    case 'Space':
+      return event.repeat ? null : { type: 'togglePlay' };
+    case 'ArrowDown':
+      return { type: 'nudge', lines: 1 };
+    case 'ArrowUp':
+      return { type: 'nudge', lines: -1 };
+    case 'PageDown':
+      return { type: 'page', direction: 1 };
+    case 'PageUp':
+      return { type: 'page', direction: -1 };
+    case 'ArrowRight':
+      return { type: 'speed', delta: event.shiftKey ? SPEED_STEP_COARSE : SPEED_STEP };
+    case 'ArrowLeft':
+      return { type: 'speed', delta: event.shiftKey ? -SPEED_STEP_COARSE : -SPEED_STEP };
+    case 'Home':
+      return { type: 'rewind' };
+    case 'End':
+      return { type: 'jumpToEnd' };
+    case 'Escape':
+      return { type: 'rewindAndPause' };
+  }
+
+  // Character bindings use key so they work across keyboard layouts.
+  switch (event.key) {
+    case '?':
+      return { type: 'toggleHelp' };
+    case '+':
+    case '=':
+      return { type: 'fontSize', steps: 1 };
+    case '-':
+    case '_':
+      return { type: 'fontSize', steps: -1 };
+    case '0':
+      return { type: 'resetFontSize' };
+  }
+
+  const lowerKey = event.key.toLowerCase();
+  if (lowerKey === 'f') {
+    return { type: 'flip', axis: event.shiftKey ? 'v' : 'h' };
+  }
+  if (lowerKey === 'l') {
+    return { type: 'reengageFollow' };
+  }
+
+  return null;
+}
@@ -0,0 +1,223 @@
+import type { CustomFields } from 'ontime-types';
+import { use, useMemo } from 'react';
+import { useSearchParams } from 'react-router';
+
+import { OptionTitle } from '../../common/components/view-params-editor/constants';
+import type { ViewOption } from '../../common/components/view-params-editor/viewParams.types';
+import { makeOptionsFromCustomFields } from '../../common/components/view-params-editor/viewParams.utils';
+import { PresetContext } from '../../common/context/PresetContext';
+import { isStringBoolean } from '../common/viewUtils';
+import { DEFAULT_SPEED, MAX_FONT_SIZE, MAX_SPEED, MIN_FONT_SIZE, MIN_SPEED } from './teleprompter.scroll';
+import type { HeadingSource, TeleprompterOptions } from './teleprompter.types';
+
+const headingOptions: { value: HeadingSource; label: string }[] = [
+  { value: 'title', label: 'Title' },
+  { value: 'cue', label: 'Cue' },
+  { value: 'both', label: 'Cue and title' },
+  { value: 'none', label: 'None' },
+];
+const headingSources = headingOptions.map((option) => option.value);
+
+export const defaults = {
+  script: 'none',
+  heading: 'title' as HeadingSource,
+  hideEmpty: true,
+  showGroups: true,
+  speed: DEFAULT_SPEED,
+  followLoaded: true,
+  fontSize: 52,
+  lineHeight: 1.3,
+  textWidth: 80,
+  readingLine: true,
+  readingLinePos: 25,
+  flipH: false,
+  flipV: false,
+};
+
+const bounds = {
+  speed: [MIN_SPEED, MAX_SPEED],
+  fontSize: [MIN_FONT_SIZE, MAX_FONT_SIZE],
+  lineHeight: [1, 4],
+  textWidth: [20, 100],
+  readingLinePos: [0, 100],
+} as const;
+
+export const getTeleprompterOptions = (customFields: CustomFields): ViewOption[] => {
+  const scriptOptions = makeOptionsFromCustomFields(customFields, [
+    { value: 'none', label: 'None' },
+    { value: 'note', label: 'Note' },
+    { value: 'title', label: 'Title' },
+  ]);
+
+  return [
+    {
+      title: OptionTitle.DataSources,
+      collapsible: true,
+      options: [
+        {
+          id: 'script',
+          title: 'Script',
+          description: 'Select the data source which holds the script to read',
+          type: 'option',
+          values: scriptOptions,
+          defaultValue: defaults.script,
+        },
+        {
+          id: 'heading',
+          title: 'Segment heading',
+          description: 'What to show above each segment of the script',
+          type: 'option',
+          values: headingOptions,
+          defaultValue: defaults.heading,
+        },
+      ],
+    },
+    {
+      title: OptionTitle.BehaviourOptions,
+      collapsible: true,
+      options: [
+        {
+          id: 'speed',
+          title: 'Speed',
+          description: `Scroll speed in lines per minute (${MIN_SPEED}-${MAX_SPEED}). Adjustable live with the arrow keys`,
+          type: 'number',
+          defaultValue: defaults.speed,
+        },
+        {
+          id: 'followLoaded',
+          title: 'Follow loaded event',
+          description: 'Scroll to the segment of the loaded event. Scrolling by hand releases the follow',
+          type: 'boolean',
+          defaultValue: defaults.followLoaded,
+        },
+      ],
+    },
+    {
+      title: OptionTitle.ElementVisibility,
+      collapsible: true,
+      options: [
+        {
+          id: 'hideEmpty',
+          title: 'Hide events without a script',
+          description: 'Prevents showing headings for events which have no script text',
+          type: 'boolean',
+          defaultValue: defaults.hideEmpty,
+        },
+        {
+          id: 'showGroups',
+          title: 'Show group names',
+          description: 'Shows the group name when the script moves into a new group',
+          type: 'boolean',
+          defaultValue: defaults.showGroups,
+        },
+      ],
+    },
+    {
+      title: OptionTitle.StyleOverride,
+      collapsible: true,
+      options: [
+        {
+          id: 'fontSize',
+          title: 'Font size',
+          description: 'Base font size in pixels. Adjustable live with the + and - keys',
+          type: 'number',
+          defaultValue: defaults.fontSize,
+        },
+        {
+          id: 'lineHeight',
+          title: 'Line height',
+          description: 'Spacing between lines, as a multiple of the font size',
+          type: 'number',
+          defaultValue: defaults.lineHeight,
+        },
+        {
+          id: 'textWidth',
+          title: 'Text width',
+          description: 'Width of the text column as a percentage of the screen. Narrower means less eye movement',
+          type: 'number',
+          defaultValue: defaults.textWidth,
+        },
+        {
+          id: 'readingLine',
+          title: 'Reading line',
+          description: 'Shows a marker beside the line which should be read',
+          type: 'boolean',
+          defaultValue: defaults.readingLine,
+        },
+        {
+          id: 'readingLinePos',
+          title: 'Reading line position',
+          description: 'Position of the reading line as a percentage from the top of the screen',
+          type: 'number',
+          defaultValue: defaults.readingLinePos,
+        },
+        {
+          id: 'flipH',
+          title: 'Flip horizontally',
+          description:
+            'Mirrors the view horizontally, which is what a beam splitter rig needs. Toggled live with F. Flip Screen in the navigation menu flips both axes at once, which is a rotation rather than a mirror',
+          type: 'boolean',
+          defaultValue: defaults.flipH,
+        },
+        {
+          id: 'flipV',
+          title: 'Flip vertically',
+          description: 'Mirrors the view vertically. Note this also moves the reading line. Toggled live with Shift+F',
+          type: 'boolean',
+          defaultValue: defaults.flipV,
+        },
+      ],
+    },
+  ];
+};
+
+function toNumber(value: string | null, [min, max]: readonly [number, number], fallback: number): number {
+  if (value === null || value === '') return fallback;
+  const parsed = Number(value);
+  if (!Number.isFinite(parsed)) return fallback;
+  return Math.min(Math.max(parsed, min), max);
+}
+
+function toBoolean(value: string | null, fallback: boolean): boolean {
+  return value === null ? fallback : isStringBoolean(value);
+}
+
+function toEnum<T extends string>(value: string | null, allowed: readonly T[], fallback: T): T {
+  return allowed.includes(value as T) ? (value as T) : fallback;
+}
+
+export function getOptionsFromParams(
+  searchParams: URLSearchParams,
+  defaultValues?: URLSearchParams,
+): TeleprompterOptions {
+  const getValue = (key: string) => defaultValues?.get(key) ?? searchParams.get(key);
+
+  return {
+    scriptSource: getValue('script') ?? defaults.script,
+    heading: toEnum(getValue('heading'), headingSources, defaults.heading),
+
+    hideEmpty: toBoolean(getValue('hideEmpty'), defaults.hideEmpty),
+    showGroups: toBoolean(getValue('showGroups'), defaults.showGroups),
+
+    speed: toNumber(getValue('speed'), bounds.speed, defaults.speed),
+    followLoaded: toBoolean(getValue('followLoaded'), defaults.followLoaded),
+
+    fontSize: toNumber(getValue('fontSize'), bounds.fontSize, defaults.fontSize),
+    lineHeight: toNumber(getValue('lineHeight'), bounds.lineHeight, defaults.lineHeight),
+    textWidth: toNumber(getValue('textWidth'), bounds.textWidth, defaults.textWidth),
+    readingLine: toBoolean(getValue('readingLine'), defaults.readingLine),
+    readingLinePos: toNumber(getValue('readingLinePos'), bounds.readingLinePos, defaults.readingLinePos),
+    flipH: toBoolean(getValue('flipH'), defaults.flipH),
+    flipV: toBoolean(getValue('flipV'), defaults.flipV),
+  };
+}
+
+export function useTeleprompterOptions(): TeleprompterOptions {
+  const [searchParams] = useSearchParams();
+  const maybePreset = use(PresetContext);
+
+  return useMemo(() => {
+    const defaultValues = maybePreset ? new URLSearchParams(maybePreset.search) : undefined;
+    return getOptionsFromParams(searchParams, defaultValues);
+  }, [maybePreset, searchParams]);
+}
@@ -0,0 +1,53 @@
+export const MIN_SPEED = 1;
+export const MAX_SPEED = 40;
+export const DEFAULT_SPEED = 14;
+
+export const SPEED_STEP = 1;
+export const SPEED_STEP_COARSE = 5;
+
+export const MIN_FONT_SIZE = 12;
+export const MAX_FONT_SIZE = 400;
+const FONT_SIZE_STEP_RATIO = 1.1;
+
+export function stepFontSize(current: number, steps: number): number {
+  return clamp(Math.round(current * FONT_SIZE_STEP_RATIO ** steps), MIN_FONT_SIZE, MAX_FONT_SIZE);
+}
+
+export const MAX_FRAME_DELTA_MS = 100;
+
+const CATCH_UP_RATE = 8;
+const CATCH_UP_EPSILON = 0.5;
+
+export function clamp(value: number, min: number, max: number): number {
+  if (Number.isNaN(value)) return min;
+  return Math.min(Math.max(value, min), max);
+}
+
+export function clampSpeed(value: number): number {
+  return clamp(value, MIN_SPEED, MAX_SPEED);
+}
+
+export function linesPerMinuteToPxPerSecond(linesPerMinute: number, lineHeightPx: number): number {
+  return (linesPerMinute / 60) * lineHeightPx;
+}
+
+export function frameDeltaSeconds(deltaMs: number): number {
+  if (!Number.isFinite(deltaMs) || deltaMs < 0) return 0;
+  return Math.min(deltaMs, MAX_FRAME_DELTA_MS) / 1000;
+}
+
+export function advance(
+  position: number,
+  pxPerSecond: number,
+  deltaSeconds: number,
+  maxScroll: number,
+): { position: number; atEnd: boolean } {
+  const next = position + pxPerSecond * deltaSeconds;
+  return { position: next, atEnd: maxScroll > 0 && next >= maxScroll };
+}
+
+export function easeCatchUp(current: number, target: number, deltaSeconds: number): number {
+  if (deltaSeconds <= 0) return current;
+  const next = target + (current - target) * Math.exp(-CATCH_UP_RATE * deltaSeconds);
+  return Math.abs(next - target) < CATCH_UP_EPSILON ? target : next;
+}
@@ -0,0 +1,52 @@
+import type { MaybeString } from 'ontime-types';
+
+export type HeadingSource = 'none' | 'title' | 'cue' | 'both';
+
+export type ScriptBlock = {
+  id: string;
+  heading: string;
+  text: string;
+  groupTitle: MaybeString;
+  isLoaded: boolean;
+};
+
+export type TeleprompterOptions = {
+  scriptSource: string;
+  heading: HeadingSource;
+  hideEmpty: boolean;
+  showGroups: boolean;
+  /** lines per minute */
+  speed: number;
+  followLoaded: boolean;
+  fontSize: number;
+  lineHeight: number;
+  textWidth: number;
+  readingLine: boolean;
+  readingLinePos: number;
+  flipH: boolean;
+  flipV: boolean;
+};
+
+export type TeleprompterAction =
+  | { type: 'togglePlay' }
+  | { type: 'nudge'; lines: number }
+  | { type: 'page'; direction: 1 | -1 }
+  | { type: 'speed'; delta: number }
+  | { type: 'rewind' }
+  | { type: 'rewindAndPause' }
+  | { type: 'jumpToEnd' }
+  | { type: 'flip'; axis: 'h' | 'v' }
+  | { type: 'fontSize'; steps: number }
+  | { type: 'resetFontSize' }
+  | { type: 'reengageFollow' }
+  | { type: 'toggleHelp' };
+
+export type TeleprompterController = {
+  togglePlay: () => void;
+  nudge: (lines: number) => void;
+  page: (direction: 1 | -1) => void;
+  changeSpeed: (delta: number) => void;
+  rewind: (alsoPause?: boolean) => void;
+  jumpToEnd: () => void;
+  reengageFollow: () => void;
+};
@@ -0,0 +1,80 @@
+import { type CustomFields, isOntimeEvent, isOntimeGroup, type MaybeString, type Rundown } from 'ontime-types';
+
+import type { RundownMetadataObject } from '../../common/utils/rundownMetadata';
+import { getPropertyValue } from '../common/viewUtils';
+import type { HeadingSource, ScriptBlock, TeleprompterOptions } from './teleprompter.types';
+
+type BuildScriptOptions = Pick<TeleprompterOptions, 'scriptSource' | 'heading' | 'hideEmpty' | 'showGroups'>;
+
+function makeHeading(source: HeadingSource, cue: string, title: string): string {
+  switch (source) {
+    case 'cue':
+      return cue;
+    case 'title':
+      return title;
+    case 'both':
+      return [cue, title].filter(Boolean).join(' · ');
+    case 'none':
+      return '';
+  }
+}
+
+function isReadableSource(scriptSource: string, customFields: CustomFields): boolean {
+  if (!scriptSource.startsWith('custom-')) {
+    return true;
+  }
+  const key = scriptSource.slice('custom-'.length);
+  return customFields[key]?.type === 'text';
+}
+
+/** Builds the continuous script in rundown order. */
+export function buildScript(
+  rundown: Rundown,
+  rundownMetadata: RundownMetadataObject,
+  customFields: CustomFields,
+  options: BuildScriptOptions,
+): ScriptBlock[] {
+  const { scriptSource, heading, hideEmpty, showGroups } = options;
+
+  if (scriptSource === 'none' || !isReadableSource(scriptSource, customFields)) {
+    return [];
+  }
+
+  const blocks: ScriptBlock[] = [];
+  let lastGroupId: MaybeString = null;
+
+  for (const id of rundown.flatOrder) {
+    const entry = rundown.entries[id];
+    if (!isOntimeEvent(entry) || entry.skip) {
+      continue;
+    }
+
+    const metadata = rundownMetadata[id];
+    const text = getPropertyValue(entry, scriptSource, rundown.entries)?.trim() ?? '';
+    if (hideEmpty && !text) {
+      continue;
+    }
+
+    const groupId = metadata?.groupId ?? null;
+    let groupTitle: MaybeString = null;
+    if (showGroups && groupId && groupId !== lastGroupId) {
+      const group = rundown.entries[groupId];
+      groupTitle = isOntimeGroup(group) ? group.title : null;
+    }
+    lastGroupId = groupId;
+
+    blocks.push({
+      id,
+      heading: makeHeading(heading, entry.cue, entry.title),
+      text,
+      groupTitle,
+      isLoaded: Boolean(metadata?.isLoaded),
+    });
+  }
+
+  return blocks;
+}
+
+export function composeFlip(flipH: boolean, flipV: boolean, isMirrored: boolean): { flipH: boolean; flipV: boolean } {
+  return { flipH: flipH !== isMirrored, flipV: flipV !== isMirrored };
+}
@@ -0,0 +1,50 @@
+import { use, useEffect } from 'react';
+import { useSearchParams } from 'react-router';
+
+import { PresetContext } from '../../common/context/PresetContext';
+import { defaults } from './teleprompter.options';
+
+const SETTLE_MS = 400;
+
+interface LiveParams {
+  speed: number;
+  fontSize: number;
+  flipH: boolean;
+  flipV: boolean;
+}
+
+/** Keeps keyboard and overlay changes shareable through the URL. */
+export function useSyncTeleprompterParams({ speed, fontSize, flipH, flipV }: LiveParams) {
+  const [, setSearchParams] = useSearchParams();
+  const isPreset = Boolean(use(PresetContext));
+
+  useEffect(() => {
+    if (isPreset) return;
+
+    const timeout = setTimeout(() => {
+      const values = {
+        speed: speed === defaults.speed ? null : String(speed),
+        fontSize: fontSize === defaults.fontSize ? null : String(fontSize),
+        flipH: flipH === defaults.flipH ? null : String(flipH),
+        flipV: flipV === defaults.flipV ? null : String(flipV),
+      };
+
+      setSearchParams(
+        (current) => {
+          const next = new URLSearchParams(current);
+          for (const [key, value] of Object.entries(values)) {
+            if (value === null) {
+              next.delete(key);
+            } else {
+              next.set(key, value);
+            }
+          }
+          return next;
+        },
+        { replace: true },
+      );
+    }, SETTLE_MS);
+
+    return () => clearTimeout(timeout);
+  }, [flipH, flipV, fontSize, isPreset, setSearchParams, speed]);
+}
@@ -0,0 +1,74 @@
+import { useEffect, useRef } from 'react';
+
+import { useViewParamsEditorStore } from '../../common/components/view-params-editor/viewParamsEditor.store';
+import { resolveTeleprompterAction } from './teleprompter.keymap';
+import type { TeleprompterAction, TeleprompterController } from './teleprompter.types';
+
+interface UseTeleprompterControlsArgs {
+  controller: TeleprompterController;
+  isHelpOpen: boolean;
+  onFlip: (axis: 'h' | 'v') => void;
+  onFontSize: (steps: number) => void;
+  onResetFontSize: () => void;
+  onToggleHelp: () => void;
+}
+
+const ignoredTags = new Set(['INPUT', 'TEXTAREA', 'SELECT']);
+
+export function useTeleprompterControls(args: UseTeleprompterControlsArgs) {
+  const argsRef = useRef(args);
+  useEffect(() => {
+    argsRef.current = args;
+  });
+
+  useEffect(() => {
+    function applyAction(action: TeleprompterAction) {
+      const { controller, onFlip, onFontSize, onResetFontSize, onToggleHelp } = argsRef.current;
+      switch (action.type) {
+        case 'togglePlay':
+          return controller.togglePlay();
+        case 'nudge':
+          return controller.nudge(action.lines);
+        case 'page':
+          return controller.page(action.direction);
+        case 'speed':
+          return controller.changeSpeed(action.delta);
+        case 'rewind':
+          return controller.rewind();
+        case 'rewindAndPause':
+          return controller.rewind(true);
+        case 'jumpToEnd':
+          return controller.jumpToEnd();
+        case 'reengageFollow':
+          return controller.reengageFollow();
+        case 'flip':
+          return onFlip(action.axis);
+        case 'fontSize':
+          return onFontSize(action.steps);
+        case 'resetFontSize':
+          return onResetFontSize();
+        case 'toggleHelp':
+          return onToggleHelp();
+      }
+    }
+
+    function handleKeyDown(event: KeyboardEvent) {
+      const target = event.target as HTMLElement | null;
+      if (target && (ignoredTags.has(target.tagName) || target.isContentEditable)) {
+        return;
+      }
+      if (useViewParamsEditorStore.getState().isOpen || argsRef.current.isHelpOpen) {
+        return;
+      }
+
+      const action = resolveTeleprompterAction(event);
+      if (!action) return;
+
+      event.preventDefault();
+      applyAction(action);
+    }
+
+    window.addEventListener('keydown', handleKeyDown);
+    return () => window.removeEventListener('keydown', handleKeyDown);
+  }, []);
+}
@@ -0,0 +1,26 @@
+import type { CustomFields, Rundown } from 'ontime-types';
+
+import useCustomFields from '../../common/hooks-query/useCustomFields';
+import { useRundownWithMetadata } from '../../common/hooks-query/useRundown';
+import type { RundownMetadataObject } from '../../common/utils/rundownMetadata';
+import { type ViewData, aggregateQueryStatus } from '../utils/viewLoader.utils';
+
+export interface TeleprompterData {
+  rundown: Rundown;
+  rundownMetadata: RundownMetadataObject;
+  customFields: CustomFields;
+}
+
+export function useTeleprompterData(): ViewData<TeleprompterData> {
+  const { data: rundown, rundownMetadata, status: rundownStatus } = useRundownWithMetadata();
+  const { data: customFields, status: customFieldStatus } = useCustomFields();
+
+  return {
+    data: {
+      rundown,
+      rundownMetadata,
+      customFields,
+    },
+    status: aggregateQueryStatus([rundownStatus, customFieldStatus]),
+  };
+}
@@ -0,0 +1,282 @@
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+
+import {
+  advance,
+  clamp,
+  clampSpeed,
+  easeCatchUp,
+  frameDeltaSeconds,
+  linesPerMinuteToPxPerSecond,
+} from './teleprompter.scroll';
+import type { ScriptBlock, TeleprompterController } from './teleprompter.types';
+
+const PAGE_FRACTION = 0.85;
+const EXTERNAL_SCROLL_EPSILON = 2;
+
+/**
+ * Uses layout coordinates because client rects include the teleprompter's CSS
+ * transform while scrollTop does not.
+ */
+function getLayoutTop(element: HTMLElement): number {
+  let top = 0;
+  let current: HTMLElement | null = element;
+
+  while (current) {
+    top += current.offsetTop;
+    current = current.offsetParent instanceof HTMLElement ? current.offsetParent : null;
+  }
+
+  return top;
+}
+
+interface UseTeleprompterScrollArgs {
+  initialSpeed: number;
+  followLoaded: boolean;
+  selectedEventId: string | null;
+  readingLinePos: number;
+  blocks: ScriptBlock[];
+}
+
+/**
+ * Owns the scroll position of the teleprompter.
+ *
+ * The animation frame is the only writer of scrollTop. Controls update refs so
+ * smooth scrolling and playback cannot compete for the DOM position.
+ */
+export function useTeleprompterScroll({
+  initialSpeed,
+  followLoaded,
+  selectedEventId,
+  readingLinePos,
+  blocks,
+}: UseTeleprompterScrollArgs) {
+  const scrollerRef = useRef<HTMLDivElement | null>(null);
+  const contentRef = useRef<HTMLDivElement | null>(null);
+  const blockRefs = useRef(new Map<string, HTMLElement>());
+
+  const [isScrollerMounted, setIsScrollerMounted] = useState(false);
+  const attachScroller = useCallback((element: HTMLDivElement | null) => {
+    scrollerRef.current = element;
+    setIsScrollerMounted(Boolean(element && contentRef.current));
+  }, []);
+  const attachContent = useCallback((element: HTMLDivElement | null) => {
+    contentRef.current = element;
+    setIsScrollerMounted(Boolean(element && scrollerRef.current));
+  }, []);
+
+  // authoritative, sub-pixel scroll position
+  const posRef = useRef(0);
+  const lastTsRef = useRef(0);
+  const runningRef = useRef(false);
+  const speedRef = useRef(initialSpeed);
+  const lineHeightRef = useRef(0);
+  const maxScrollRef = useRef(0);
+  const catchUpTargetRef = useRef<number | null>(null);
+  const pendingDeltaRef = useRef(0);
+
+  const [isRunning, setIsRunning] = useState(false);
+  const [speed, setSpeed] = useState(initialSpeed);
+  const [followLocked, setFollowLocked] = useState(false);
+  const [atEnd, setAtEnd] = useState(false);
+
+  const tick = useCallback((timestamp: number) => {
+    const el = scrollerRef.current;
+    if (!el) return;
+
+    // Adopt wheel, touch, scrollbar, browser-clamp and find-in-page changes.
+    if (Math.abs(el.scrollTop - posRef.current) > EXTERNAL_SCROLL_EPSILON) {
+      posRef.current = el.scrollTop;
+      catchUpTargetRef.current = null;
+    }
+
+    const deltaSeconds = frameDeltaSeconds(timestamp - lastTsRef.current);
+    lastTsRef.current = timestamp;
+
+    let next = posRef.current;
+
+    if (pendingDeltaRef.current !== 0) {
+      next += pendingDeltaRef.current;
+      pendingDeltaRef.current = 0;
+      catchUpTargetRef.current = null;
+    }
+
+    if (catchUpTargetRef.current !== null) {
+      next = easeCatchUp(next, catchUpTargetRef.current, deltaSeconds);
+      if (next === catchUpTargetRef.current) {
+        catchUpTargetRef.current = null;
+      }
+    } else if (runningRef.current) {
+      const pxPerSecond = linesPerMinuteToPxPerSecond(speedRef.current, lineHeightRef.current);
+      const result = advance(next, pxPerSecond, deltaSeconds, maxScrollRef.current);
+      next = result.position;
+      if (result.atEnd) {
+        runningRef.current = false;
+        setIsRunning(false);
+        setAtEnd(true);
+      }
+    }
+
+    const clamped = clamp(next, 0, maxScrollRef.current);
+    if (clamped !== posRef.current) {
+      posRef.current = clamped;
+      el.scrollTop = clamped;
+    }
+  }, []);
+
+  useEffect(() => {
+    lastTsRef.current = performance.now();
+    let frame = requestAnimationFrame(function loop(timestamp) {
+      tick(timestamp);
+      frame = requestAnimationFrame(loop);
+    });
+    return () => cancelAnimationFrame(frame);
+  }, [tick]);
+
+  const measure = useCallback(() => {
+    const scroller = scrollerRef.current;
+    const content = contentRef.current;
+    if (!scroller || !content) return;
+
+    maxScrollRef.current = Math.max(0, scroller.scrollHeight - scroller.clientHeight);
+
+    const computed = getComputedStyle(content);
+    const parsedLineHeight = Number.parseFloat(computed.lineHeight);
+    if (Number.isFinite(parsedLineHeight) && parsedLineHeight > 0) {
+      lineHeightRef.current = parsedLineHeight;
+    } else {
+      const parsedFontSize = Number.parseFloat(computed.fontSize);
+      lineHeightRef.current = Number.isFinite(parsedFontSize) ? parsedFontSize * 1.2 : 0;
+    }
+  }, []);
+
+  useEffect(() => {
+    speedRef.current = speed;
+  }, [speed]);
+
+  const [speedFromOption, setSpeedFromOption] = useState(initialSpeed);
+  // Keep the live speed in sync with view-param and remote redirect changes.
+  if (speedFromOption !== initialSpeed) {
+    setSpeedFromOption(initialSpeed);
+    setSpeed(initialSpeed);
+  }
+
+  useEffect(() => {
+    measure();
+
+    const scroller = scrollerRef.current;
+    const content = contentRef.current;
+    if (!scroller || !content) return;
+
+    const observer = new ResizeObserver(() => measure());
+    observer.observe(scroller);
+    observer.observe(content);
+    return () => observer.disconnect();
+  }, [measure, isScrollerMounted]);
+
+  useEffect(() => {
+    let cancelled = false;
+    void document.fonts?.ready.then(() => {
+      if (!cancelled) measure();
+    });
+    return () => {
+      cancelled = true;
+    };
+  }, [measure]);
+
+  useEffect(() => {
+    const onVisibilityChange = () => {
+      lastTsRef.current = performance.now();
+    };
+    document.addEventListener('visibilitychange', onVisibilityChange);
+    return () => document.removeEventListener('visibilitychange', onVisibilityChange);
+  }, []);
+
+  // Avoid re-following when a new blocks array contains the same selected event.
+  const hasSelectedBlock = selectedEventId !== null && blocks.some((block) => block.id === selectedEventId);
+
+  useEffect(() => {
+    if (!followLoaded || followLocked || !selectedEventId) return;
+
+    const scroller = scrollerRef.current;
+    const target = blockRefs.current.get(selectedEventId);
+    if (!scroller || !target) return;
+
+    const offset = (scroller.clientHeight * readingLinePos) / 100;
+    const top = getLayoutTop(target) - getLayoutTop(scroller) - offset;
+
+    catchUpTargetRef.current = clamp(top, 0, maxScrollRef.current);
+    setAtEnd(false);
+  }, [selectedEventId, followLoaded, followLocked, readingLinePos, hasSelectedBlock]);
+
+  const handleUserScroll = useCallback(() => {
+    if (followLoaded) {
+      setFollowLocked(true);
+    }
+  }, [followLoaded]);
+
+  const registerBlock = useCallback((id: string, element: HTMLElement | null) => {
+    if (element) {
+      blockRefs.current.set(id, element);
+    } else {
+      blockRefs.current.delete(id);
+    }
+  }, []);
+
+  const controller: TeleprompterController = useMemo(() => {
+    const play = () => {
+      if (maxScrollRef.current > 0 && posRef.current >= maxScrollRef.current) {
+        return;
+      }
+      runningRef.current = true;
+      setIsRunning(true);
+      setAtEnd(false);
+    };
+
+    const pause = () => {
+      runningRef.current = false;
+      setIsRunning(false);
+    };
+
+    return {
+      togglePlay: () => (runningRef.current ? pause() : play()),
+      nudge: (lines: number) => {
+        pendingDeltaRef.current += lines * lineHeightRef.current;
+        setAtEnd(false);
+      },
+      page: (direction: 1 | -1) => {
+        const scroller = scrollerRef.current;
+        if (!scroller) return;
+        const distance = scroller.clientHeight * PAGE_FRACTION * direction;
+        catchUpTargetRef.current = clamp(posRef.current + distance, 0, maxScrollRef.current);
+        setAtEnd(false);
+      },
+      changeSpeed: (delta: number) => setSpeed((current) => clampSpeed(current + delta)),
+      rewind: (alsoPause = false) => {
+        catchUpTargetRef.current = 0;
+        if (alsoPause) pause();
+        setAtEnd(false);
+      },
+      jumpToEnd: () => {
+        catchUpTargetRef.current = maxScrollRef.current;
+        if (maxScrollRef.current > 0) {
+          runningRef.current = false;
+          setIsRunning(false);
+          setAtEnd(true);
+        }
+      },
+      reengageFollow: () => setFollowLocked(false),
+    };
+  }, []);
+
+  return {
+    scrollerRef: attachScroller,
+    contentRef: attachContent,
+    registerBlock,
+    handleUserScroll,
+    controller,
+    isRunning,
+    speed,
+    followLocked,
+    atEnd,
+  };
+}
@@ -1,6 +1,6 @@
 {
  "name": "ontime-electron",
-  "version": "4.12.0",
+  "version": "4.13.0-beta.1",
  "author": "Carlos Valente",
  "description": "Time keeping for live events",
  "repository": "https://github.com/cpvalente/ontime",
@@ -151,6 +151,7 @@ function makeViewMenu(clientUrl) {
      makeItemOpenInBrowser('Editor', `${clientUrl}/editor`),
      makeItemOpenInBrowser('Cuesheet', `${clientUrl}/cuesheet`),
      makeItemOpenInBrowser('Operator', `${clientUrl}/op`),
+      makeItemOpenInBrowser('Teleprompter', `${clientUrl}/teleprompter`),
      { type: 'separator' },
      makeItemOpenInBrowser('Timer', `${clientUrl}/timer`),
      makeItemOpenInBrowser('Backstage', `${clientUrl}/backstage`),
@@ -1,6 +1,6 @@
 {
  "name": "@getontime/resolver",
-  "version": "4.12.0",
+  "version": "4.13.0-beta.1",
  "type": "module",
  "repository": "https://github.com/cpvalente/ontime",
  "types": "./dist/main.d.ts",
@@ -2,7 +2,7 @@
  "name": "ontime-server",
  "type": "module",
  "main": "src/index.ts",
-  "version": "4.12.0",
+  "version": "4.13.0-beta.1",
  "exports": "./src/index.js",
  "dependencies": {
    "@googleapis/sheets": "^5.0.5",
@@ -9,45 +9,52 @@ test.describe('test view navigation feature', () => {
  test('Timeline', async ({ page }) => {
    await openNavigationMenu(page);
    await page.getByRole('button', { name: 'Timeline' }).click();
-    page.locator('data-testid=timeline-view');
+    await expect(page.getByTestId('timeline-view')).toBeVisible();
    await expect(page).toHaveURL('/timeline');
  });

  test('Backstage', async ({ page }) => {
    await openNavigationMenu(page);
    await page.getByRole('button', { name: 'Backstage' }).click();
-    page.locator('data-testid=backstage-view');
+    await expect(page.getByTestId('backstage-view')).toBeVisible();
    await expect(page).toHaveURL('/backstage');
  });

  test('Studio Clock', async ({ page }) => {
    await openNavigationMenu(page);
    await page.getByRole('button', { name: 'Studio Clock' }).click();
-    page.locator('data-testid=studio-view');
+    await expect(page.getByTestId('studio-view')).toBeVisible();
    await expect(page).toHaveURL('/studio');
  });

  test('Countdown', async ({ page }) => {
    await openNavigationMenu(page);
    await page.getByRole('button', { name: 'Countdown' }).click();
-    page.locator('data-testid=countdown-view');
+    await expect(page.getByTestId('countdown-view')).toBeVisible();
    await expect(page).toHaveURL('/countdown');
  });

  test('Project Info', async ({ page }) => {
    await openNavigationMenu(page);
    await page.getByRole('button', { name: 'Project Info' }).click();
-    page.locator('data-testid=project-view');
+    await expect(page.getByTestId('project-view')).toBeVisible();
    await expect(page).toHaveURL('/info');
  });

  test('Timer', async ({ page }) => {
    await openNavigationMenu(page);
    await page.getByRole('button', { name: 'Timer', exact: true }).click();
-    page.locator('data-testid=timer-view');
+    await expect(page.getByTestId('timer-view')).toBeVisible();
    await expect(page).toHaveURL('/timer');
  });

+  test('Teleprompter', async ({ page }) => {
+    await openNavigationMenu(page);
+    await page.getByRole('button', { name: 'Teleprompter' }).click();
+    await expect(page.getByTestId('teleprompter-view')).toBeVisible();
+    await expect(page).toHaveURL('/teleprompter');
+  });
+
  test('not-found', async ({ page }) => {
    await page.goto('/not-found');

@@ -13,3 +13,25 @@ test('View params configures timer view', async ({ page }) => {
  await expect(page.getByText('TIME NOW', { exact: true })).not.toBeInViewport();
  await expect(page).toHaveURL(/.*hideClock=true/);
 });
+
+test('View params configures teleprompter view', async ({ page, request }) => {
+  const response = await request.post('/data/db/demo');
+  expect(response.ok()).toBe(true);
+
+  await page.goto('/teleprompter?script=note');
+
+  const readingMarker = page.locator('.teleprompter__reading-marker');
+  await expect(readingMarker).toBeVisible();
+
+  await page.mouse.move(Math.random() * 100, Math.random() * 100);
+  await page.getByTestId('navigation__toggle-settings').click();
+
+  const readingLineSwitch = page.locator('label:has(input[name="readingLine"]) [role="switch"]');
+  await expect(readingLineSwitch).toHaveAttribute('aria-checked', 'true');
+
+  await readingLineSwitch.click();
+  await page.getByTestId('apply-view-params').click();
+
+  await expect(page).toHaveURL(/.*readingLine=false/);
+  await expect(readingMarker).toHaveCount(0);
+});
@@ -0,0 +1,48 @@
+import { expect, test } from '@playwright/test';
+
+test('teleprompter renders and responds to its primary controls', async ({ page, request }) => {
+  // Earlier feature specs edit the loaded rundown. Restore the real demo project
+  // instead of manufacturing test-only events: its notes are the script fixture.
+  const response = await request.post('/data/db/demo');
+  expect(response.ok()).toBe(true);
+  const loadResponse = await request.get('/api/load/index/5');
+  expect(loadResponse.ok()).toBe(true);
+
+  await page.goto('/teleprompter?script=note&flipV=true');
+
+  const view = page.getByTestId('teleprompter-view');
+  const scroller = page.getByTestId('teleprompter-scroller');
+  const speed = page.getByTestId('teleprompter-speed');
+
+  await expect(view).toBeVisible();
+  await expect(scroller).toBeVisible();
+  await expect(page.getByText('Music plays, holding slide on screens')).toBeVisible();
+  await expect(speed).toContainText('14');
+  await expect(view).toHaveCSS('transform', /^matrix\(1, 0, 0, -1/);
+
+  // Following uses layout coordinates, which must remain stable when the view's
+  // visual coordinates are inverted by a vertical transform.
+  const loadedBlock = page.locator('.teleprompter__block[data-loaded]');
+  await expect(loadedBlock).toBeAttached();
+  const expectedScrollTop = await loadedBlock.evaluate((element) => {
+    const scroller = element.closest('.teleprompter')?.querySelector<HTMLElement>('.teleprompter__scroller');
+    if (!scroller) throw new Error('Teleprompter scroller not found');
+    return Math.max(0, (element as HTMLElement).offsetTop - scroller.clientHeight * 0.25);
+  });
+  await expect
+    .poll(async () => Math.abs((await scroller.evaluate((element) => element.scrollTop)) - expectedScrollTop))
+    .toBeLessThan(2);
+
+  await page.goto('/teleprompter?script=note');
+
+  await page.keyboard.press('Space');
+  await expect.poll(() => scroller.evaluate((element) => element.scrollTop)).toBeGreaterThan(0);
+  await page.keyboard.press('Space');
+
+  await page.keyboard.press('ArrowRight');
+  await page.keyboard.press('f');
+  await expect(speed).toContainText('15');
+  await expect(page).toHaveURL(/speed=15/);
+  await expect(page).toHaveURL(/flipH=true/);
+  await expect(view).toHaveCSS('transform', /^matrix\(-1/);
+});
@@ -1,6 +1,6 @@
 {
  "name": "ontime",
-  "version": "4.12.0",
+  "version": "4.13.0-beta.1",
  "description": "Time keeping for live events",
  "keywords": [
    "ontime",
@@ -1,5 +1,5 @@
 {
-  "version": "4.12.0",
+  "version": "4.13.0-beta.1",
  "name": "ontime-types",
  "type": "module",
  "main": "./src/index.ts",
@@ -11,6 +11,7 @@ export enum OntimeView {
  StudioClock = 'studio',
  Countdown = 'countdown',
  ProjectInfo = 'info',
+  Teleprompter = 'teleprompter',
 }

 export type OntimeViewPresettable = Exclude<OntimeView, OntimeView.Editor>;
Author	SHA1	Message	Date
Carlos Valente	f14ad0099e	bump version	2026-08-21 20:52:55 +02:00
Carlos Valente	7fc93af909	feat(teleprompter): add teleprompter view	2026-08-21 20:52:55 +02:00