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clipboard.js
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clipboard.js
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/**
* SVGcode—Convert raster images to SVG vector graphics
* Copyright (C) 2021 Google LLC
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
import { inputImage, copyButton, pasteButton, svgOutput } from './domrefs.js';
import { optimizeSVG } from './svgo.js';
import { showToast } from './ui.js';
import { i18n } from './i18n.js';
import { IS_SAFARI } from './util.js';
pasteButton.addEventListener('click', async () => {
try {
const clipboardItems = await navigator.clipboard.read();
for (const clipboardItem of clipboardItems) {
for (const type of clipboardItem.types) {
if (type.startsWith('image/')) {
const image = await clipboardItem.getType(type);
if (!image) {
return;
}
const blobURL = URL.createObjectURL(image);
inputImage.src = blobURL;
return;
}
}
}
} catch (err) {
console.error(err.name, err.message);
showToast(err.message);
}
});
document.addEventListener('paste', (e) => {
try {
if (!e.clipboardData.files.length) {
return;
}
const file = e.clipboardData.files[0];
if (file.type.startsWith('image/')) {
const blobURL = URL.createObjectURL(file);
inputImage.src = blobURL;
return;
}
} catch (err) {
console.error(err.name, err.message);
showToast(err.message);
}
});
copyButton.addEventListener('click', async () => {
let svg = svgOutput.innerHTML;
showToast(i18n.t('optimizingSVG'), Infinity);
try {
// Firefox only supports `navigator.clipboard.write()`.
if (!('ClipboardItem' in window)) {
await navigator.clipboard.writeText(await optimizeSVG(svg));
} else {
// Chromium >=98.
if (
('supports' in ClipboardItem &&
ClipboardItem.supports('image/svg+xml')) ||
!IS_SAFARI
) {
svg = await optimizeSVG(svg);
await navigator.clipboard.write([
new ClipboardItem({
'image/svg+xml': new Promise(async (resolve) => {
resolve(new Blob([svg], { type: 'image/svg+xml' }));
}),
'text/plain': new Promise(async (resolve) => {
resolve(new Blob([svg], { type: 'text/plain' }));
}),
}),
]);
// Safari (non-optimized SVG)
} else {
/*
await navigator.clipboard.write([
new ClipboardItem({
'text/plain': new Promise((resolve) => {
resolve(new Blob([svg], { type: 'text/plain' }));
}),
}),
]);
*/
await navigator.clipboard.write([
new ClipboardItem({
'text/plain': new Blob([svg], { type: 'text/plain' }),
}),
]);
}
}
// Chromium < 98.
} catch (err) {
svg = await optimizeSVG(svg);
const textBlob = new Blob([svg], { type: 'text/plain' });
const svgBlob = new Blob([svg], { type: 'image/svg+xml' });
try {
// Chromium <=88 (text only). Old Chrome crashes hard when trying to copy
// 'image/svg+xml' blob: https://github.com/tomayac/SVGcode/issues/51.
if (
Number(navigator.userAgent.replace(/.*Chrome\/(\d+).*/, '$1')) <= 88
) {
await navigator.clipboard.write([
new ClipboardItem({
[textBlob.type]: textBlob,
}),
]);
} else {
// Chromium (text and SVG)
await navigator.clipboard.write([
new ClipboardItem({
[svgBlob.type]: svgBlob,
[textBlob.type]: textBlob,
}),
]);
}
} catch (err) {
try {
// Chromium (text only)
await navigator.clipboard.write([
new ClipboardItem({
[textBlob.type]: textBlob,
}),
]);
} catch (err) {
showToast(err.message);
return;
}
}
}
showToast(i18n.t('copiedSVG'));
});