feat: add event support

packages/blocks/src/root-block/edgeless/gfx-tool/default-tool-ext/event-ext.ts

@@ -0,0 +1,68 @@
+import type { PointerEventState } from '@blocksuite/block-std';
+import type {
+  GfxLocalElementModel,
+  GfxPrimitiveElementModel,
+} from '@blocksuite/block-std/gfx';
+
+import { Bound } from '@blocksuite/global/utils';
+
+import { DefaultModeDragType, DefaultToolExt } from './ext.js';
+
+export class CanvasElementEventExt extends DefaultToolExt {
+  private _currentStackedElm: (
+    | GfxPrimitiveElementModel
+    | GfxLocalElementModel
+  )[] = [];
+
+  override supportedDragTypes: DefaultModeDragType[] = [
+    DefaultModeDragType.None,
+  ];
+
+  private _executeInReverseOrder(
+    callback: (elm: GfxPrimitiveElementModel | GfxLocalElementModel) => void,
+    arr = this._currentStackedElm
+  ): void {
+    for (let i = arr.length - 1; i >= 0; i--) {
+      callback(arr[i]);
+    }
+  }
+
+  override click(_evt: PointerEventState): void {
+    this._executeInReverseOrder(elm => elm.onClick?.(_evt));
+  }
+
+  override dblClick(_evt: PointerEventState): void {
+    this._executeInReverseOrder(elm => elm.onDblClick?.(_evt));
+  }
+
+  override pointerDown(_evt: PointerEventState): void {
+    this._executeInReverseOrder(elm => elm.onPointerDown?.(_evt));
+  }
+
+  override pointerMove(_evt: PointerEventState): void {
+    const [x, y] = this.gfx.viewport.toModelCoord(_evt.x, _evt.y);
+    const hoveredElm = this.gfx.grid.search(new Bound(x, y, 1, 1), {
+      filter: ['canvas', 'local'],
+    }) as (GfxPrimitiveElementModel | GfxLocalElementModel)[];
+    const stackedElmMap = new Map(
+      this._currentStackedElm.map((val, index) => [val, index])
+    );
+
+    this._executeInReverseOrder(elm => {
+      if (stackedElmMap.has(elm)) {
+        const idx = stackedElmMap.get(elm)!;
+        this._currentStackedElm.splice(idx, 1);
+        elm.onPointerMove?.(_evt);
+      } else {
+        elm.onPointerEnter?.(_evt);
+      }
+    }, hoveredElm);
+    this._executeInReverseOrder(elm => elm.onPointerLeave?.(_evt));
+
+    this._currentStackedElm = hoveredElm;
+  }
+
+  override pointerUp(_evt: PointerEventState): void {
+    this._executeInReverseOrder(elm => elm.onPointerUp?.(_evt));
+  }
+}

packages/blocks/src/root-block/edgeless/gfx-tool/default-tool-ext/ext.ts

@@ -27,6 +27,8 @@ export type DragState = {
 };
 
 export class DefaultToolExt {
+  readonly supportedDragTypes: DefaultModeDragType[] = [];
+
   get gfx() {
     return this.defaultTool.gfx;
   }
@@ -37,6 +39,10 @@ export class DefaultToolExt {
 
   constructor(protected defaultTool: DefaultTool) {}
 
+  click(_evt: PointerEventState) {}
+
+  dblClick(_evt: PointerEventState) {}
+
   initDrag(_: DragState): {
     dragStart?: (evt: PointerEventState) => void;
     dragMove?: (evt: PointerEventState) => void;
@@ -47,5 +53,11 @@ export class DefaultToolExt {
 
   mounted() {}
 
+  pointerDown(_evt: PointerEventState) {}
+
+  pointerMove(_evt: PointerEventState) {}
+
+  pointerUp(_evt: PointerEventState) {}
+
   unmounted() {}
 }

packages/blocks/src/root-block/edgeless/gfx-tool/default-tool-ext/mind-map-ext/mind-map-ext.ts

@@ -39,6 +39,10 @@ type DragMindMapCtx = {
 export class MindMapExt extends DefaultToolExt {
   private _responseAreaUpdated = new Set<MindmapElementModel>();
 
+  override supportedDragTypes: DefaultModeDragType[] = [
+    DefaultModeDragType.ContentMoving,
+  ];
+
   private get _indicatorOverlay() {
     return this.std.getOptional(
       OverlayIdentifier('mindmap-indicator')

packages/blocks/src/root-block/edgeless/gfx-tool/default-tool.ts

@@ -66,6 +66,7 @@ import {
   mountTextElementEditor,
 } from '../utils/text.js';
 import { fitToScreen } from '../utils/viewport.js';
+import { CanvasElementEventExt } from './default-tool-ext/event-ext.js';
 import { DefaultModeDragType } from './default-tool-ext/ext.js';
 import { MindMapExt } from './default-tool-ext/mind-map-ext/mind-map-ext.js';
 
@@ -241,6 +242,12 @@ export class DefaultTool extends BaseTool {
     ) as EdgelessFrameManager;
   }
 
+  private get _supportedExts() {
+    return this._exts.filter(ext =>
+      ext.supportedDragTypes.includes(this.dragType)
+    );
+  }
+
   /**
    * Get the end position of the dragging area in the model coordinate
    */
@@ -578,7 +585,7 @@ export class DefaultTool extends BaseTool {
       event,
     };
 
-    this._extHandlers = this._exts.map(ext => ext.initDrag(ctx));
+    this._extHandlers = this._supportedExts.map(ext => ext.initDrag(ctx));
     this._selectedBounds = this._toBeMoved.map(element =>
       Bound.deserialize(element.xywh)
     );
@@ -732,6 +739,7 @@ export class DefaultTool extends BaseTool {
     }
 
     this._isDoubleClickedOnMask = false;
+    this._supportedExts.forEach(ext => ext.click?.(e));
   }
 
   override deactivate() {
@@ -809,6 +817,8 @@ export class DefaultTool extends BaseTool {
       }
     }
 
+    this._supportedExts.forEach(ext => ext.click?.(e));
+
     if (
       e.raw.target &&
       e.raw.target instanceof HTMLElement &&
@@ -990,14 +1000,21 @@ export class DefaultTool extends BaseTool {
       })
     );
 
-    this._exts = [MindMapExt].map(constructor => new constructor(this));
+    this._exts = [MindMapExt, CanvasElementEventExt].map(
+      constructor => new constructor(this)
+    );
     this._exts.forEach(ext => ext.mounted());
   }
 
+  override pointerDown(e: PointerEventState): void {
+    this._supportedExts.forEach(ext => ext.pointerDown(e));
+  }
+
   override pointerMove(e: PointerEventState) {
     const hovered = this._pick(e.x, e.y, {
       hitThreshold: 10,
     });
+
     if (
       isFrameBlock(hovered) &&
       hovered.externalBound?.isPointInBound(
@@ -1008,6 +1025,12 @@ export class DefaultTool extends BaseTool {
     } else {
       this.frameOverlay.clear();
     }
+
+    this._supportedExts.forEach(ext => ext.pointerMove(e));
+  }
+
+  override pointerUp(e: PointerEventState) {
+    this._supportedExts.forEach(ext => ext.pointerUp(e));
   }
 
   override tripleClick() {

packages/framework/block-std/src/gfx/model/base.ts

@@ -7,6 +7,7 @@ import type {
   XYWH,
 } from '@blocksuite/global/utils';
 
+import type { PointerEventState } from '../../event/index.js';
 import type { EditorHost } from '../../view/element/lit-host.js';
 import type { GfxGroupModel, GfxModel } from './model.js';
 
@@ -42,6 +43,20 @@ export interface GfxCompatibleInterface extends IBound, GfxElementGeometry {
   readonly deserializedXYWH: XYWH;
 
   readonly elementBound: Bound;
+
+  onPointerEnter?: (e: PointerEventState) => void;
+
+  onPointerLeave?: (e: PointerEventState) => void;
+
+  onPointerMove?: (e: PointerEventState) => void;
+
+  onPointerDown?: (e: PointerEventState) => void;
+
+  onPointerUp?: (e: PointerEventState) => void;
+
+  onClick?: (e: PointerEventState) => void;
+
+  onDblClick?: (e: PointerEventState) => void;
 }
 
 /**

packages/framework/block-std/src/gfx/model/surface/element-model.ts

@@ -17,6 +17,7 @@ import {
 import { DocCollection, type Y } from '@blocksuite/store';
 import { createMutex } from 'lib0/mutex';
 
+import type { PointerEventState } from '../../../event/index.js';
 import type { EditorHost } from '../../../view/index.js';
 import type {
   GfxCompatibleInterface,
@@ -79,6 +80,20 @@ export abstract class GfxPrimitiveElementModel<
 
   protected _stashed: Map<keyof Props | string, unknown>;
 
+  onClick?: ((e: PointerEventState) => void) | undefined;
+
+  onDblClick?: ((e: PointerEventState) => void) | undefined;
+
+  onPointerDown?: ((e: PointerEventState) => void) | undefined;
+
+  onPointerEnter?: ((e: PointerEventState) => void) | undefined;
+
+  onPointerLeave?: ((e: PointerEventState) => void) | undefined;
+
+  onPointerMove?: ((e: PointerEventState) => void) | undefined;
+
+  onPointerUp?: ((e: PointerEventState) => void) | undefined;
+
   abstract rotate: number;
 
   surface!: SurfaceBlockModel;

packages/framework/block-std/src/gfx/model/surface/local-element-model.ts

@@ -11,6 +11,7 @@ import {
   rotatePoints,
 } from '@blocksuite/global/utils';
 
+import type { PointerEventState } from '../../../event/index.js';
 import type { EditorHost } from '../../../view/index.js';
 import type { GfxCompatibleInterface, PointTestOptions } from '../base.js';
 import type { GfxGroupModel } from '../model.js';
@@ -31,6 +32,20 @@ export abstract class GfxLocalElementModel implements GfxCompatibleInterface {
 
   index: string = 'a0';
 
+  onClick?: (e: PointerEventState) => void;
+
+  onDblClick?: (e: PointerEventState) => void;
+
+  onPointerDown?: (e: PointerEventState) => void;
+
+  onPointerEnter?: (e: PointerEventState) => void;
+
+  onPointerLeave?: (e: PointerEventState) => void;
+
+  onPointerMove?: (e: PointerEventState) => void;
+
+  onPointerUp?: (e: PointerEventState) => void;
+
   opacity: number = 1;
 
   rotate: number = 0;