26 lines
1.5 KiB
JavaScript
26 lines
1.5 KiB
JavaScript
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import { calculateConcreteRect } from "../../utils/object-sizing";
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import uni from "../../utils/global";
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export default {
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name: 'drawImageFit',
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handle: async (canvas, ctx, url, options) => {
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var _a, _b, _c;
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const [error, imageInfo] = await uni.getImageInfo({ src: url });
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// 配置默认值
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const style = Object.assign({ radius: 0, objectFit: 'cover', intrinsicSize: { width: (_a = imageInfo === null || imageInfo === void 0 ? void 0 : imageInfo.width) !== null && _a !== void 0 ? _a : 100, height: (_b = imageInfo === null || imageInfo === void 0 ? void 0 : imageInfo.height) !== null && _b !== void 0 ? _b : 100 }, specifiedSize: { width: 100, height: 100 }, intrinsicPosition: ['center', 'center'], specifiedPosition: [0, 0] }, options);
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// 计算图片尺寸
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const drawImageInfo = calculateConcreteRect(style, style.intrinsicSize, style.specifiedSize);
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// 如有圆角, 则进行裁剪
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if (style.radius > 0) {
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ctx.save();
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(_c = ctx.setFillStyle) === null || _c === void 0 ? void 0 : _c.call(ctx, 'transparent');
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ctx.fillStyle = 'transparent';
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ctx.fillRoundRect(style.specifiedPosition[0], style.specifiedPosition[1], style.specifiedSize.width, style.specifiedSize.height, style.radius);
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ctx.clip();
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}
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const result = await ctx.drawImage(url, ...Object.values(drawImageInfo));
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if (style.radius > 0)
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ctx.restore();
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return result;
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}
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};
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