Question

所发生的事情是，当我从JSON加载数据时，X和Y的缩放不受尊重，因此当对象加载时，它保持其原始高度/宽度。有什么理由可以解决这个问题吗？

左边的矩形应该比右边大。

<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/1.7.18/fabric.min.js"></script>
<canvas id="c" width="1000" height="1000"></canvas>

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Answer 1

＆＃13;

var canvas  = new fabric.Canvas('c');

let json = {"objects":[{"type":"rect","originX":"left","originY":"top","left":323,"top":259,"width":50,"height":300,"fill":"#ff5b6d","stroke":null,"strokeWidth":0,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1.54,"scaleY":1.54,"angle":0,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"rx":0,"ry":0},{"type":"rect","originX":"left","originY":"top","left":205,"top":198,"width":50,"height":300,"fill":"#ff5b6d","stroke":null,"strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":0,"flipX":false,"flipy":false,"opacity":1,"shadow":null,"visible":true,"clipto":null,"backgroundcolor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"rx":0,"ry":0}]}

canvas.loadFromJSON(json);

＆＃13;

<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/1.7.18/fabric.min.js"></script>
<canvas id="c" width="1000" height="1000"></canvas>

＆＃13;

fabricjs对象属性是驼峰式的。如果你提供所有正确的密钥，一切都会正常工作。我已将您的json数据密钥更改为驼峰式案例。您可以获取所有对象属性here。

Answer 2

似乎你可以操纵每个物体，因为它正在建造或者随之而来。

＆＃13;

var canvas  = new fabric.Canvas('c');

let json = {"objects":[{"type":"rect","originx":"left","originy":"top","left":323,"top":259,"width":50,"height":300,"fill":"#ff5b6d","stroke":null,"strokewidth":0,"strokedasharray":null,"strokelinecap":"butt","strokelinejoin":"miter","strokemiterlimit":10,"scalex":1.54,"scaley":1.54,"angle":0,"flipx":false,"flipy":false,"opacity":1,"shadow":null,"visible":true,"clipto":null,"backgroundcolor":"","fillrule":"nonzero","globalcompositeoperation":"source-over","transformmatrix":null,"skewx":0,"skewy":0,"rx":0,"ry":0},{"type":"rect","originx":"left","originy":"top","left":205,"top":198,"width":50,"height":300,"fill":"#ff5b6d","stroke":null,"strokewidth":1,"strokedasharray":null,"strokelinecap":"butt","strokelinejoin":"miter","strokemiterlimit":10,"scalex":1,"scaley":1,"angle":0,"flipx":false,"flipy":false,"opacity":1,"shadow":null,"visible":true,"clipto":null,"backgroundcolor":"","fillrule":"nonzero","globalcompositeoperation":"source-over","transformmatrix":null,"skewx":0,"skewy":0,"rx":0,"ry":0}]}

canvas.loadFromJSON(json, canvas.renderAll.bind(canvas), (o, object) => {
                    object.scale(o.scalex, o.scaley);
                  });
canvas.renderAll();

＆＃13;

<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/1.7.18/fabric.min.js"></script>
<canvas id="c" width="1000" height="1000"></canvas>

＆＃13;

fabricjs - loadFromJSON不尊重缩放

2 个答案: