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[eric] canvas: cut the evictable full-window texture 98MB to 43MB, so the wash has far less left to drop as a band

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ciregenz
2026-08-07 15:23:43 -07:00
parent f018eefdb9
commit ec0d706a80
5 changed files with 138 additions and 21 deletions
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frontend/src/app/components/Layout/AppShell.tsx
+23 -6
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@@ -32,7 +32,7 @@ import { findBrowserByWebContentsId } from '@/shared/browserRegistry';
import { byPreviewRecency } from '@/shared/previewOrder';
import { useClaudeTokens, useThemeAccent, useThemeWash } from '@/shared/styles/ThemeContext';
import SpacesStrip from '@/app/pages/Dashboard/desktop/SpacesStrip';
import { washOpaqueBackgroundUrl, washUnderlayColor, effectiveWashStops } from '@/shared/styles/washBackground';
import { washBackgroundLayers, washUnderlayColor, effectiveWashStops } from '@/shared/styles/washBackground';
import { useGrainTileUrl } from '@/shared/styles/useGrainTileUrl';
import { ErrorSlime } from '@/app/components/feedback/ErrorSlime';
@@ -343,6 +343,14 @@ const AppShell: React.FC = () => {
// unpinned fullscreen keeps the hover-peek overlay.
const [fsSidebarPinned, setFsSidebarPinned] = useState(false);
const sidebarAway = (sidebarCollapsed || (fsActive && !fsSidebarPinned)) && isDashboardViewActive;
// The dashboard canvas paints the identical wash and grain over everything but a 6px frame of
// shell, so painting them here too just buys a second full-window texture for the compositor to
// evict. Skip it while the canvas is up; on every other route the shell is the only painter.
const shellWashLayers = React.useMemo(
() => (fsWashStops
? washBackgroundLayers(fsWashStops, themeWashOpacity, c.bg.page, isDashboardViewActive ? null : shellGrainUrl)
: null),
[fsWashStops, themeWashOpacity, c.bg.page, shellGrainUrl, isDashboardViewActive]);
// When the sidebar docks away, the canvas runs flush to the window's left edge, so the floating
// dashboard header would sit right under the macOS traffic lights. Publish an inset the header reads
// (only on macOS, where the lights exist) so it clears them; the sidebar carries its own clearance.
@@ -353,6 +361,15 @@ const AppShell: React.FC = () => {
else root.style.removeProperty('--osw-header-inset');
return () => { root.style.removeProperty('--osw-header-inset'); };
}, [sidebarAway]);
// Hand the boot paint back. index.html puts the wash gradient on <html> so a reload never flashes
// white, but nothing ever took it off: it stayed for the whole session as a full-window,
// background-attachment:fixed root layer that the shell already paints over. That is a permanently
// resident evictable texture bought for the first frame only, and evicting it is what shows the
// hard-edged band. The shell covers the viewport by the time this runs, so a flat colour is all the
// backdrop that is left to want.
useEffect(() => {
document.documentElement.style.background = c.bg.page;
}, [c.bg.page]);
// Global text-size ratio (Settings > Interface). Scaling the root font-size scales every rem-based
// size in one shot, so type grows or shrinks together with no layout breakage. Clamped to a sane band
// so a corrupt value can never wreck the whole UI.
@@ -417,11 +434,11 @@ const AppShell: React.FC = () => {
// sliver of shell peeking past the viewport reads as continuous texture, never a tint/grain seam.
...(fsWashStops ? {
backgroundColor: washUnderlayColor(fsWashStops, themeWashOpacity, c.bg.page),
backgroundImage: shellGrainUrl
? `${shellGrainUrl}, ${washOpaqueBackgroundUrl(fsWashStops, themeWashOpacity, c.bg.page)}`
: washOpaqueBackgroundUrl(fsWashStops, themeWashOpacity, c.bg.page),
backgroundSize: shellGrainUrl ? 'auto, 100% 100%' : '100% 100%',
backgroundRepeat: shellGrainUrl ? 'repeat, no-repeat' : 'no-repeat',
...(shellWashLayers ? {
backgroundImage: shellWashLayers.image,
backgroundSize: shellWashLayers.size,
backgroundRepeat: shellWashLayers.repeat,
} : {}),
} : {}),
}}>
{/* Sidebar retired: dashboards switch via the macOS-Spaces top strip; a slim band below the