Skip to content

implemented side scrolling/panning to timeline #114

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
mallae-rpi merged 2 commits into from
Apr 17, 2026
Merged

implemented side scrolling/panning to timeline #114

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
0052adc
added horizontal scrolling
hashmapenjoyer Apr 17, 2026
e5653e9
updated help modal
hashmapenjoyer Apr 17, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 17 additions & 1 deletion src/components/HelpModal.tsx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -90,8 +90,24 @@ export default function HelpModal({ onClose }: HelpModalProps) {
<kbd>Spacebar</kbd> - Play/Pause
</li>
<li>
<kbd>Esc</kbd> - Close this help modal
<kbd>Esc</kbd> - Close this help modal / deselect clip
</li>
<li>
<kbd>Delete</kbd> / <kbd>Backspace</kbd> - Delete selected clip
</li>
</ul>
</section>

<section className="help-section">
<h3 className="help-section-title">Timeline Navigation</h3>
<ul className="help-shortcuts">
<li>
<kbd>Scroll</kbd> - Zoom in / out
</li>
<li>
<kbd>Shift</kbd> + <kbd>Scroll</kbd> - Pan earlier / later
</li>
<li>Horizontal trackpad swipe also pans the timeline</li>
</ul>
</section>

Expand Down
13 changes: 10 additions & 3 deletions src/components/Timeline/Timeline.tsx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -517,10 +517,17 @@ export default function Timeline({ sfxClips, libraryItems, onSfxChange }: Timeli
const onWheel = (e: WheelEvent) => {
e.preventDefault();

// Shift+scroll or horizontal trackpad swipe -> pan left/right
const isPan = e.shiftKey || Math.abs(e.deltaX) > Math.abs(e.deltaY);
if (isPan) {
const scrollDelta = e.shiftKey ? e.deltaY : e.deltaX;
el.scrollLeft = Math.max(0, el.scrollLeft + scrollDelta);
return;
}

// Vertical scroll -> zoom, anchored to mouse position
const oldPps = pxPerSecRef.current;
const delta = e.deltaY !== 0 ? e.deltaY : -e.deltaX;
const factor = 1 - delta * ZOOM_SENSITIVITY;
// prevent zooming out enough to see the canvas end
const factor = 1 - e.deltaY * ZOOM_SENSITIVITY;
const minPps = Math.max(
MIN_PX_PER_SEC,
containerWidthRef.current / effectiveDurationRef.current,
Expand Down
Loading