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fix(editor): edgeless can't slider with finger (#15091)
fix bug edgeless can't slider with finger <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **New Features** * Added mobile immersive edgeless mode with dynamic chrome auto-hide and tap-gesture controls. * Added a mobile zoom ruler UI for edgeless. * **Bug Fixes** * Improved iOS rendering/zoom by applying low-zoom survival behavior, gesture-aware refresh deferral, and effective-DPR canvas scaling. * Fixed iOS webview zoom/bounce and process-termination reload behavior. * Improved placeholder styling with theme-aware colors. * **Chores** * Updated local ignore rules and iOS app build/version configuration. <!-- end of auto-generated comment: release notes by coderabbit.ai --> --------- Co-authored-by: DarkSky <darksky2048@gmail.com>
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keepClamDown
@@ -28,6 +28,7 @@
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- [gfxGroupCompatibleSymbol](variables/gfxGroupCompatibleSymbol.md)
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- [SURFACE\_TEXT\_UNIQ\_IDENTIFIER](variables/SURFACE_TEXT_UNIQ_IDENTIFIER.md)
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- [SURFACE\_YMAP\_UNIQ\_IDENTIFIER](variables/SURFACE_YMAP_UNIQ_IDENTIFIER.md)
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- [viewportRuntimeConfig](variables/viewportRuntimeConfig.md)
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## Functions
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- [generateKeyBetween](functions/generateKeyBetween.md)
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- [generateKeyBetweenV2](functions/generateKeyBetweenV2.md)
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- [generateNKeysBetween](functions/generateNKeysBetween.md)
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- [getEffectiveDpr](functions/getEffectiveDpr.md)
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- [getTopElements](functions/getTopElements.md)
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- [GfxCompatible](functions/GfxCompatible.md)
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- [isGfxGroupCompatibleModel](functions/isGfxGroupCompatibleModel.md)
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[**BlockSuite API Documentation**](../../../../README.md)
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***
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[BlockSuite API Documentation](../../../../README.md) / [@blocksuite/std](../../README.md) / [gfx](../README.md) / getEffectiveDpr
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# Function: getEffectiveDpr()
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> **getEffectiveDpr**(`zoom`, `rawDpr`): `number`
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Resolves the effective device-pixel-ratio for canvas backing stores at the
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given zoom, honoring [viewportRuntimeConfig.CANVAS\_DPR\_CAP\_BY\_ZOOM](../variables/viewportRuntimeConfig.md#canvas_dpr_cap_by_zoom).
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Returns the raw `window.devicePixelRatio` when no cap applies.
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## Parameters
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### zoom
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`number`
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### rawDpr
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`number` = `window.devicePixelRatio`
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## Returns
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`number`
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@@ -0,0 +1,117 @@
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[**BlockSuite API Documentation**](../../../../README.md)
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***
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[BlockSuite API Documentation](../../../../README.md) / [@blocksuite/std](../../README.md) / [gfx](../README.md) / viewportRuntimeConfig
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# Variable: viewportRuntimeConfig
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> `const` **viewportRuntimeConfig**: `object`
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Process-wide defaults applied to every Viewport at construction.
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Platforms that need different behavior (e.g. mobile/iOS, which must clamp the
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zoom floor and defer DOM mutations during gestures to avoid WKWebView process
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termination) override these once at startup, before any editor mounts. This
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guarantees both the editor and the readonly preview viewports are born with
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the same limits — avoiding the race and wrong-instance problems of patching a
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single Viewport asynchronously after it has already mounted.
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Desktop leaves these untouched, so its behavior is unchanged.
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## Type Declaration
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### CANVAS\_DPR\_CAP\_BY\_ZOOM
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> **CANVAS\_DPR\_CAP\_BY\_ZOOM**: \[`number`, `number`\][]
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Caps the canvas backing-store device-pixel-ratio at low zoom.
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Each entry is `[zoomThreshold, dprCap]`, sorted ascending by threshold.
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When the live zoom is below a threshold, the corresponding cap bounds the
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effective dpr used to size canvases. Far-out zoom makes content tiny on
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screen, so a full retina backing store is wasted memory — on iOS that waste
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is what pushes WKWebView past its compositing budget and crashes the web
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content process during pan/zoom.
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Empty (the desktop default) means no cap: canvases always use the raw
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`window.devicePixelRatio`, so desktop behavior is unchanged.
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### LOW\_ZOOM\_GESTURE\_ACTIVE\_BLOCK\_LIMIT
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> **LOW\_ZOOM\_GESTURE\_ACTIVE\_BLOCK\_LIMIT**: `number` = `0`
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During low-zoom gesture survival mode, keep only a tiny subset of DOM blocks
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as real active DOM (selected + a few nearby blocks). `0` keeps the legacy
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behavior where every viewport block remains visually mounted as `survival`.
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### LOW\_ZOOM\_GESTURE\_ACTIVE\_DISTANCE\_RATIO
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> **LOW\_ZOOM\_GESTURE\_ACTIVE\_DISTANCE\_RATIO**: `number` = `0.35`
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Distance threshold (as a fraction of the viewport's shorter side) used to
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decide whether an unselected viewport block counts as "nearby" to the
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current selection during low-zoom gesture survival mode.
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### OVERSCAN\_RATIO
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> **OVERSCAN\_RATIO**: `number` = `0`
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Fraction by which the *render/activation* viewport bound is enlarged on
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every side (see Viewport.overscanViewportBounds). Pre-painting a
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margin around the visible area means moderate pan/zoom gestures move into
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content that is already mounted and rasterized, so it does not blank out
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and wait for the post-gesture refresh.
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Memory grows by roughly `(1 + 2 * ratio) ** 2`, so this must stay modest
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and be paired with a zoom floor + dpr cap on mobile. `0` (desktop default)
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makes Viewport.overscanViewportBounds identical to
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Viewport.viewportBounds, leaving desktop behavior unchanged.
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This governs the *canvas* render bound only (see
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Viewport.overscanViewportBounds). It enlarges the canvas backing
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stores, so memory grows with the overscan area. Keep it modest and pair it
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with the mobile zoom floor + dpr cap so connectors/elements stay painted
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through a gesture without pushing WKWebView over budget.
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### OVERSCAN\_RATIO\_BLOCK
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> **OVERSCAN\_RATIO\_BLOCK**: `number` = `0`
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Like [OVERSCAN\_RATIO](#overscan_ratio) but for the *DOM block mounting* bound (see
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Viewport.overscanBlockBounds). This one is expensive: every
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mounted block becomes its own composited layer subtree in the WebContent
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process, so enlarging it multiplies resident memory and is what pushes the
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process toward an iOS jetsam kill. Keep this small (or `0`) even when
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[OVERSCAN\_RATIO](#overscan_ratio) is generous. `0` (desktop default) leaves block
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mounting on the exact visible bound, unchanged from upstream.
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### POST\_GESTURE\_REFRESH\_DELAY
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> **POST\_GESTURE\_REFRESH\_DELAY**: `number` = `800`
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Delay (ms) before the post-gesture refresh repaints canvases and reactivates
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blocks, used only when [SKIP\_REFRESH\_DURING\_GESTURE](#skip_refresh_during_gesture) is true. The same
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value drives both the canvas and block refresh timers so they fire together
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(avoiding the "blocks appear, then connectors" staggered reveal). Desktop
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never enters that code path, so this is mobile-only.
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### SKIP\_REFRESH\_DURING\_GESTURE
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> **SKIP\_REFRESH\_DURING\_GESTURE**: `boolean` = `false`
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### VIEWPORT\_REFRESH\_MAX\_INTERVAL
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> **VIEWPORT\_REFRESH\_MAX\_INTERVAL**: `number` = `120`
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### VIEWPORT\_REFRESH\_PIXEL\_THRESHOLD
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> **VIEWPORT\_REFRESH\_PIXEL\_THRESHOLD**: `number` = `18`
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### ZOOM\_MAX
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> **ZOOM\_MAX**: `number`
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### ZOOM\_MIN
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> **ZOOM\_MIN**: `number`
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