ui: Add Zen mode #3693
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ui: Add Zen mode #3693
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stevegolton
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Nov 17, 2025
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Pressing the hamburger menu now just makes the sidebar disappear forever. You have to run a command to get it back.
Please test PRs before requesting a review.
The 3 commands relating to the sidebar are now quite confusing.
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November 28, 2025 18:17
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Add Zen Mode
Summary
This PR implements a "zen mode" feature that provides a distraction-free viewing experience by hiding UI chrome (sidebar, overview panel, and status bar). Users can toggle zen mode via
Shift+For the command palette. When zen mode is active, opening the command palette temporarily shows the topbar, which auto-hides after the user submits or closes the omnibox.Changes
zenModeEnabledstate andtopbarVisibleInZenModestate toAppImpltoggleZenMode(),showTopbarInZenMode(), andhideTopbarInZenMode()methods toAppAPIdev.perfetto.ToggleZenModewithShift+FhotkeyUiMainto conditionally hide sidebar, topbar, and status bar when zen mode is activeTimelinePageto hide overview panel when zen mode is activeNotes
When entering zen mode, the omnibox is automatically reset to ensure a clean state. The topbar visibility in zen mode is managed separately to allow temporary access to the command palette while maintaining the zen mode experience.