ccfacc5ee6
Using the [ts.js codemod](https://gist.github.com/tschaub/1ea498c9d1e5268cf36d212b3949be4e): jscodeshift --transform ts.js src
129 lines
3.1 KiB
JavaScript
129 lines
3.1 KiB
JavaScript
/**
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* @module ol/source/TileDebug
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*/
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import Tile from '../Tile.js';
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import TileState from '../TileState.js';
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import {createCanvasContext2D} from '../dom.js';
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import {toSize} from '../size.js';
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import TileSource from '../source/Tile.js';
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import {getKeyZXY} from '../tilecoord.js';
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class LabeledTile extends Tile {
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/**
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* @param {import("../tilecoord.js").TileCoord} tileCoord Tile coordinate.
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* @param {import("../size.js").Size} tileSize Tile size.
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* @param {string} text Text.
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*/
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constructor(tileCoord, tileSize, text) {
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super(tileCoord, TileState.LOADED);
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/**
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* @private
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* @type {import("../size.js").Size}
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*/
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this.tileSize_ = tileSize;
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/**
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* @private
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* @type {string}
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*/
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this.text_ = text;
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/**
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* @private
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* @type {HTMLCanvasElement}
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*/
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this.canvas_ = null;
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}
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/**
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* Get the image element for this tile.
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* @return {HTMLCanvasElement} Image.
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*/
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getImage() {
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if (this.canvas_) {
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return this.canvas_;
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} else {
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const tileSize = this.tileSize_;
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const context = createCanvasContext2D(tileSize[0], tileSize[1]);
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context.strokeStyle = 'black';
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context.strokeRect(0.5, 0.5, tileSize[0] + 0.5, tileSize[1] + 0.5);
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context.fillStyle = 'black';
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context.textAlign = 'center';
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context.textBaseline = 'middle';
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context.font = '24px sans-serif';
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context.fillText(this.text_, tileSize[0] / 2, tileSize[1] / 2);
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this.canvas_ = context.canvas;
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return context.canvas;
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}
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}
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/**
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* @override
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*/
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load() {}
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}
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/**
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* @typedef {Object} Options
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* @property {import("../proj.js").ProjectionLike} projection Projection.
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* @property {import("../tilegrid/TileGrid.js").default} [tileGrid] Tile grid.
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* @property {boolean} [wrapX=true] Whether to wrap the world horizontally.
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*/
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/**
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* @classdesc
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* A pseudo tile source, which does not fetch tiles from a server, but renders
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* a grid outline for the tile grid/projection along with the coordinates for
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* each tile. See examples/canvas-tiles for an example.
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*
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* Uses Canvas context2d, so requires Canvas support.
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* @api
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*/
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class TileDebug extends TileSource {
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/**
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* @param {Options=} options Debug tile options.
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*/
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constructor(options) {
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super({
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opaque: false,
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projection: options.projection,
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tileGrid: options.tileGrid,
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wrapX: options.wrapX !== undefined ? options.wrapX : true
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});
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}
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/**
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* @inheritDoc
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*/
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getTile(z, x, y) {
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const tileCoordKey = getKeyZXY(z, x, y);
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if (this.tileCache.containsKey(tileCoordKey)) {
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return /** @type {!LabeledTile} */ (this.tileCache.get(tileCoordKey));
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} else {
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const tileSize = toSize(this.tileGrid.getTileSize(z));
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const tileCoord = [z, x, y];
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const textTileCoord = this.getTileCoordForTileUrlFunction(tileCoord);
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const text = !textTileCoord ? '' :
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this.getTileCoordForTileUrlFunction(textTileCoord).toString();
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const tile = new LabeledTile(tileCoord, tileSize, text);
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this.tileCache.set(tileCoordKey, tile);
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return tile;
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}
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}
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}
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export default TileDebug;
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