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/** global: google */ |
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import { IconObject } from "./icon_object.js"; |
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const generateClusterCanvas = function(options) { |
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let canvas = options.canvas || document.createElement("canvas"), |
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anchorX = 27, |
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anchorY = 53, |
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radius = anchorX - 9, |
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color1, |
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font = options.font || "fontello", |
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fontsize = options.fontsize || 14, |
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context = canvas.getContext("2d"); |
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canvas.width = anchorX * 2; |
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canvas.height = anchorY + 1; |
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context.clearRect(0, 0, canvas.width, canvas.height); |
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context.moveTo(anchorX, anchorY); |
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let labelvalue = parseInt(options.label, 10); |
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if (labelvalue < 10) { |
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color1 = "orange"; |
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fontsize = 14; |
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} else if (labelvalue < 30) { |
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color1 = "red"; |
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fontsize = 15; |
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} else { |
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color1 = "purple"; |
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fontsize = 16; |
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} |
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if (labelvalue > 99) { |
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radius = radius + 3; |
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context.setLineDash([5, 5]); |
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context.beginPath(); |
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context.arc( |
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anchorX, |
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2 + 0.5 * anchorY, |
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radius + 7, |
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0, |
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2 * Math.PI, |
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false |
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); |
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context.fillStyle = "transparent"; |
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context.strokeStyle = color1; |
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context.lineWidth = 2; |
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context.fill(); |
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context.stroke(); |
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} |
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context.setLineDash([5, 5]); |
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context.beginPath(); |
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context.arc(anchorX, 2 + 0.5 * anchorY, radius + 2, 0, 2 * Math.PI, false); |
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context.fillStyle = "transparent"; |
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context.strokeStyle = color1; |
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context.lineWidth = 2; |
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context.fill(); |
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context.stroke(); |
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// Círculo blanco |
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context.setLineDash([5, 0]); |
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context.beginPath(); |
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context.arc(anchorX, 2 + 0.5 * anchorY, radius - 3, 0, 2 * Math.PI, false); |
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context.fillStyle = "white"; |
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context.strokeStyle = color1; |
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context.lineWidth = 4; |
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context.fill(); |
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context.stroke(); |
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context.beginPath(); |
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context.font = "normal normal normal " + fontsize + "px " + font; |
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console.log("context font", context.font); |
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context.fillStyle = "#333"; |
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context.textBaseline = "top"; |
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let textWidth = context.measureText(options.label), |
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text_x = options.label, |
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label_x = Math.floor(canvas.width / 2 - textWidth.width / 2), |
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label_y = 1 + Math.floor(canvas.height / 2 - fontsize / 2); |
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// centre the text. |
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context.fillText(text_x, label_x, label_y); |
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return canvas; |
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}; |
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function createClusterIcon(theoptions) { |
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theoptions.scale = theoptions.scale || 1; |
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let markerCanvas = generateClusterCanvas(theoptions), |
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markerOpts = {}, |
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scale = theoptions.scale; |
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Object.assign(markerOpts, theoptions); |
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Object.assign(markerOpts, { |
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origin: { x: 0, y: 0 }, |
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anchor: { x: 27 * scale, y: 24 * scale }, |
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size: { width: 54, height: 48 }, |
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scaledSize: { width: 54 * scale, height: 48 * scale } |
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}); |
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let url = markerCanvas.toDataURL(), |
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fillColor = markerCanvas.fillColor, |
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iconObj = new IconObject(url, fillColor, markerOpts); |
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return iconObj; |
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} |
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108
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export { createClusterIcon }; |
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