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>

blocksuite/affine/widgets/edgeless-zoom-toolbar/src/effects.ts

@@ -2,12 +2,14 @@ import {
   AFFINE_EDGELESS_ZOOM_TOOLBAR_WIDGET,
   AffineEdgelessZoomToolbarWidget,
 } from '.';
+import { MobileZoomRuler } from './mobile-zoom-ruler';
 import { ZoomBarToggleButton } from './zoom-bar-toggle-button';
 import { EdgelessZoomToolbar } from './zoom-toolbar';
 
 export function effects() {
   customElements.define('edgeless-zoom-toolbar', EdgelessZoomToolbar);
   customElements.define('zoom-bar-toggle-button', ZoomBarToggleButton);
+  customElements.define('mobile-zoom-ruler', MobileZoomRuler);
   customElements.define(
     AFFINE_EDGELESS_ZOOM_TOOLBAR_WIDGET,
     AffineEdgelessZoomToolbarWidget

blocksuite/affine/widgets/edgeless-zoom-toolbar/src/index.ts

@@ -1,5 +1,6 @@
 import { EdgelessLegacySlotIdentifier } from '@blocksuite/affine-block-surface';
 import type { RootBlockModel } from '@blocksuite/affine-model';
+import { IS_MOBILE } from '@blocksuite/global/env';
 import { WidgetComponent, WidgetViewExtension } from '@blocksuite/std';
 import { GfxControllerIdentifier } from '@blocksuite/std/gfx';
 import { effect } from '@preact/signals-core';
@@ -14,15 +15,20 @@ export class AffineEdgelessZoomToolbarWidget extends WidgetComponent<RootBlockMo
   static override styles = css`
     :host {
       position: absolute;
-      bottom: 20px;
+      bottom: var(--affine-edgeless-zoom-toolbar-bottom, 20px);
       left: 12px;
       z-index: var(--affine-z-index-popover);
       display: flex;
       justify-content: center;
+      pointer-events: none;
       -webkit-user-select: none;
       user-select: none;
     }
 
+    mobile-zoom-ruler {
+      pointer-events: auto;
+    }
+
     @container viewport (width <= 1200px) {
       edgeless-zoom-toolbar {
         display: none;
@@ -73,10 +79,14 @@ export class AffineEdgelessZoomToolbarWidget extends WidgetComponent<RootBlockMo
   }
 
   override render() {
-    if (this._hide || !this.edgeless) {
+    if (this._hide) {
       return nothing;
     }
 
+    if (IS_MOBILE) {
+      return html`<mobile-zoom-ruler .std=${this.std}></mobile-zoom-ruler>`;
+    }
+
     return html`
       <edgeless-zoom-toolbar .std=${this.std}></edgeless-zoom-toolbar>
       <zoom-bar-toggle-button .std=${this.std}></zoom-bar-toggle-button>

blocksuite/affine/widgets/edgeless-zoom-toolbar/src/mobile-zoom-ruler.ts

@@ -0,0 +1,139 @@
+import { stopPropagation } from '@blocksuite/affine-shared/utils';
+import { WithDisposable } from '@blocksuite/global/lit';
+import { ViewBarIcon } from '@blocksuite/icons/lit';
+import type { BlockStdScope } from '@blocksuite/std';
+import { GfxControllerIdentifier } from '@blocksuite/std/gfx';
+import { baseTheme } from '@toeverything/theme';
+import { css, html, LitElement, unsafeCSS } from 'lit';
+import { property } from 'lit/decorators.js';
+
+/**
+ * Compact zoom indicator for narrow / mobile edgeless viewports.
+ * Shows the live zoom percentage and a fit-to-screen action in a pill HUD
+ * anchored to the bottom-left of the canvas.
+ */
+export class MobileZoomRuler extends WithDisposable(LitElement) {
+  static override styles = css`
+    :host {
+      display: flex;
+      pointer-events: auto;
+      font-family: ${unsafeCSS(baseTheme.fontSansFamily)};
+    }
+
+    .zoom-pill {
+      display: flex;
+      align-items: center;
+      height: 32px;
+      background: var(--affine-background-overlay-panel-color);
+      border: 1px solid var(--affine-border-color);
+      border-radius: 999px;
+      box-shadow: var(--affine-shadow-1);
+      overflow: hidden;
+    }
+
+    .zoom-label {
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      min-width: 44px;
+      padding: 0 12px;
+      font-size: 12px;
+      font-weight: 500;
+      line-height: 1;
+      color: var(--affine-text-secondary-color);
+      white-space: nowrap;
+      user-select: none;
+    }
+
+    .divider {
+      width: 1px;
+      height: 16px;
+      background: var(--affine-border-color);
+      flex-shrink: 0;
+    }
+
+    .fit-button {
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      width: 36px;
+      height: 100%;
+      padding: 0;
+      border: none;
+      background: transparent;
+      color: var(--affine-icon-color);
+      cursor: pointer;
+    }
+
+    .fit-button:hover:not(:disabled) {
+      background: var(--affine-hover-color);
+      color: var(--affine-primary-color);
+    }
+
+    .fit-button:disabled {
+      cursor: not-allowed;
+      color: var(--affine-text-disable-color);
+    }
+
+    .fit-button svg {
+      width: 20px;
+      height: 20px;
+    }
+  `;
+
+  get gfx() {
+    return this.std.get(GfxControllerIdentifier);
+  }
+
+  get viewport() {
+    return this.gfx.viewport;
+  }
+
+  get zoom() {
+    if (!this.viewport) {
+      return 1;
+    }
+    return this.viewport.zoom;
+  }
+
+  override firstUpdated() {
+    const { disposables } = this;
+    const viewport = this.viewport;
+    if (!viewport) {
+      return;
+    }
+    disposables.add(
+      viewport.viewportUpdated.subscribe(() => this.requestUpdate())
+    );
+    disposables.add(viewport.zoomUpdated.subscribe(() => this.requestUpdate()));
+  }
+
+  override render() {
+    const formattedZoom = `${Math.round(this.zoom * 100)}%`;
+    const locked = this.viewport?.locked || this.std.store.readonly;
+
+    return html`
+      <div
+        class="zoom-pill"
+        @dblclick=${stopPropagation}
+        @mousedown=${stopPropagation}
+        @mouseup=${stopPropagation}
+        @pointerdown=${stopPropagation}
+      >
+        <span class="zoom-label">${formattedZoom}</span>
+        <span class="divider"></span>
+        <button
+          class="fit-button"
+          aria-label="Fit to screen"
+          ?disabled=${locked}
+          @click=${() => this.gfx.fitToScreen()}
+        >
+          ${ViewBarIcon()}
+        </button>
+      </div>
+    `;
+  }
+
+  @property({ attribute: false })
+  accessor std!: BlockStdScope;
+}