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Define image export size limit

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This commit is contained in:
Paulo Gustavo Veiga 2022-02-15 18:29:02 -08:00
parent e586903f8d
commit 301d141ce0
2 changed files with 18 additions and 14 deletions
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11
packages/mindplot/src/components/export/BinaryImageExporter.ts
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@ -21,8 +21,6 @@ import SVGExporter from './SVGExporter';
* Based on https://mybyways.com/blog/convert-svg-to-png-using-your-browser * Based on https://mybyways.com/blog/convert-svg-to-png-using-your-browser
*/ */
class BinaryImageExporter extends Exporter { class BinaryImageExporter extends Exporter {
private static maxAllowedSize = 10000;
private svgElement: Element; private svgElement: Element;
private width: number; private width: number;
@ -65,14 +63,7 @@ class BinaryImageExporter extends Exporter {
height = (this.height * dpr); height = (this.height * dpr);
} }
// // Prevents an image too big. Failures seen during export in couple of browsers console.log(`Export size: ${width}:${height}`);
// if (Math.max(width, height) > BinaryImageExporter.maxAllowedSize) {
// const scale = Math.max(width, height) / BinaryImageExporter.maxAllowedSize;
// width /= scale;
// height /= scale;
// }
console.log(`Export size: ${width}: ${height}`);
canvas.setAttribute('width', width.toFixed(0)); canvas.setAttribute('width', width.toFixed(0));
canvas.setAttribute('height', height.toFixed(0)); canvas.setAttribute('height', height.toFixed(0));

21
packages/mindplot/src/components/export/SVGExporter.ts
View File

@ -29,6 +29,8 @@ class SVGExporter extends Exporter {
private adjustToFit: boolean; private adjustToFit: boolean;
private static MAX_SUPPORTED_SIZE = 2500;
constructor(svgElement: Element, adjustToFit = true) { constructor(svgElement: Element, adjustToFit = true) {
super('svg', 'image/svg+xml'); super('svg', 'image/svg+xml');
this.svgElement = svgElement; this.svgElement = svgElement;
@ -111,8 +113,16 @@ class SVGExporter extends Exporter {
minX, maxX, minY, maxY, minX, maxX, minY, maxY,
} = this._calcualteDimensions(); } = this._calcualteDimensions();
const width = maxX + Math.abs(minX); let width: number = maxX + Math.abs(minX);
const height = maxY + Math.abs(minY); let height: number = maxY + Math.abs(minY);
// Prevents an image too big. Failures seen during export in couple of browsers
if (Math.max(width, height) > SVGExporter.MAX_SUPPORTED_SIZE) {
const scale = Math.max(width, height) / SVGExporter.MAX_SUPPORTED_SIZE;
width /= scale;
height /= scale;
}
return { width, height }; return { width, height };
} }
@ -127,8 +137,11 @@ class SVGExporter extends Exporter {
svgElem.setAttribute('viewBox', `${minX} ${minY} ${width} ${height}`); svgElem.setAttribute('viewBox', `${minX} ${minY} ${width} ${height}`);
svgElem.setAttribute('preserveAspectRatio', 'xMinYMin'); svgElem.setAttribute('preserveAspectRatio', 'xMinYMin');
svgElem.setAttribute('width', width.toFixed(0));
svgElem.setAttribute('height', height.toFixed(0)); // Get image size ...
const imgSize = this.getImgSize();
svgElem.setAttribute('width', imgSize.width.toFixed(0));
svgElem.setAttribute('height', imgSize.height.toFixed(0));
return document; return document;
} }