fabricjs - loadFromJSONスケーリングを尊重しない

Question

何が起こっているのかは、JSONからデータをロードするとき、オブジェクトの読み込み時に元の高さ/幅を維持するため、XとYのスケーリングが尊重されないということです。これと、とにかくそれを回避する理由は何ですか？

左の矩形は右よりも大きくする必要があります。

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);

<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>

Answer 1

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);

<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>

fabricjsプロパティオブジェクトキャメルケースです。あなたが適切なキーをすべて提供すれば、すべてうまく動作します。あなたのjsonデータキーをラクダのケースに変更しました。すべてのオブジェクトプロパティhereを取得できます。

Answer 2

それが構築されたか、その沿って何かされていますように、各オブジェクトを操作できるように思えます。

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();

<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>