@antv/x6/lib/graph/virtual-render.js

JavaScript diagramming library that uses SVG and HTML for rendering

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.VirtualRenderManager = void 0;
const x6_common_1 = require("@antv/x6-common");
const base_1 = require("./base");
class VirtualRenderManager extends base_1.Base {
    init() {
        this.resetRenderArea = x6_common_1.FunctionExt.throttle(this.resetRenderArea, 200, {
            leading: true,
        });
        this.resetRenderArea();
        this.startListening();
    }
    startListening() {
        this.graph.on('translate', this.resetRenderArea, this);
        this.graph.on('scale', this.resetRenderArea, this);
        this.graph.on('resize', this.resetRenderArea, this);
    }
    stopListening() {
        this.graph.off('translate', this.resetRenderArea, this);
        this.graph.off('scale', this.resetRenderArea, this);
        this.graph.off('resize', this.resetRenderArea, this);
    }
    enableVirtualRender() {
        this.options.virtual = true;
        this.resetRenderArea();
    }
    disableVirtualRender() {
        this.options.virtual = false;
        this.graph.renderer.setRenderArea(undefined);
    }
    resetRenderArea() {
        if (this.options.virtual) {
            const renderArea = this.graph.getGraphArea();
            this.graph.renderer.setRenderArea(renderArea);
        }
    }
    dispose() {
        this.stopListening();
    }
}
__decorate([
    base_1.Base.dispose()
], VirtualRenderManager.prototype, "dispose", null);
exports.VirtualRenderManager = VirtualRenderManager;
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