mirror of
https://github.com/google/blockly.git
synced 2026-05-13 15:40:11 +02:00
Beka Westberg
125 lines
3.3 KiB
TypeScript
125 lines
3.3 KiB
TypeScript
/**
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* @license
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* Copyright 2019 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @fileoverview Geras renderer.
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*/
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/**
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* Geras renderer.
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* @class
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*/
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/* eslint-disable-next-line no-unused-vars */
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import type {BlockSvg} from '../../block_svg';
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import {BlockStyle, Theme} from '../../theme';
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import * as blockRendering from '../common/block_rendering';
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import type {RenderInfo as BaseRenderInfo} from '../common/info';
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import {Renderer as BaseRenderer} from '../common/renderer';
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import {ConstantProvider} from './constants';
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import {Drawer} from './drawer';
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import {HighlightConstantProvider} from './highlight_constants';
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import {RenderInfo} from './info';
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import {PathObject} from './path_object';
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/**
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* The geras renderer.
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* @alias Blockly.geras.Renderer
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*/
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export class Renderer extends BaseRenderer {
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/** The renderer's highlight constant provider. */
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// AnyDuringMigration because: Type 'null' is not assignable to type
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// 'HighlightConstantProvider'.
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private highlightConstants_: HighlightConstantProvider =
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null as AnyDuringMigration;
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/**
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* @param name The renderer name.
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* @internal
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*/
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constructor(name: string) {
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super(name);
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}
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/**
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* Initialize the renderer. Geras has a highlight provider in addition to
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* the normal constant provider.
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* @internal
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*/
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override init(theme: Theme, opt_rendererOverrides: AnyDuringMigration) {
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super.init(theme, opt_rendererOverrides);
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this.highlightConstants_ = this.makeHighlightConstants_();
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this.highlightConstants_.init();
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}
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override refreshDom(svg: SVGElement, theme: Theme) {
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super.refreshDom(svg, theme);
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this.getHighlightConstants().init();
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}
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override makeConstants_() {
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return new ConstantProvider();
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}
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/**
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* Create a new instance of the renderer's render info object.
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* @param block The block to measure.
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* @return The render info object.
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*/
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protected override makeRenderInfo_(block: BlockSvg): RenderInfo {
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return new RenderInfo(this, block);
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}
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/**
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* Create a new instance of the renderer's drawer.
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* @param block The block to render.
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* @param info An object containing all information needed to render this
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* block.
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* @return The drawer.
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*/
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protected override makeDrawer_(block: BlockSvg, info: BaseRenderInfo):
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Drawer {
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return new Drawer(block, (info as RenderInfo));
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}
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/**
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* Create a new instance of a renderer path object.
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* @param root The root SVG element.
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* @param style The style object to use for colouring.
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* @return The renderer path object.
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* @internal
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*/
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override makePathObject(root: SVGElement, style: BlockStyle): PathObject {
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return new PathObject(
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root, style, (this.getConstants() as ConstantProvider));
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}
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/**
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* Create a new instance of the renderer's highlight constant provider.
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* @return The highlight constant provider.
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*/
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protected makeHighlightConstants_(): HighlightConstantProvider {
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return new HighlightConstantProvider((this.getConstants()));
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}
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/**
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* Get the renderer's highlight constant provider. We assume that when this
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* is called, the renderer has already been initialized.
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* @return The highlight constant provider.
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* @internal
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*/
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getHighlightConstants(): HighlightConstantProvider {
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return this.highlightConstants_;
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}
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}
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blockRendering.register('geras', Renderer);
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