pengjunjie/sdkjs
1
0
Fork 1
mirror of https://github.com/ONLYOFFICE/sdkjs.git synced 2026-04-07 14:09:12 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request '[bug] fix bug 80141' (#1991) from fix/bug80141 into release/v9.3.0

Browse Source 
Reviewed-on: https://git.onlyoffice.com/ONLYOFFICE/sdkjs/pulls/1991
This commit is contained in:
Oleg Korshul
2026-02-19 11:00:12 +00:00
parent 59d3203abe aa192e34d4
commit 3e8ddfb9ac
1 changed files with 27 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
word/apiCommon.js
View File

@ -2884,24 +2884,38 @@
this.ProcessedCanvas.width = nW;
this.ProcessedCanvas.height = nH;
const ctx = this.ProcessedCanvas.getContext('2d');
ctx.drawImage(_img.Image, 0, 0, nW, nH);
try
{
ctx.drawImage(_img.Image, 0, 0, nW, nH);
}
catch (e)
{
return;
}
if (this.RemoveBackground)
{
const oData = ctx.getImageData(0, 0, nW, nH);
const px = oData.data;
const nLow = 50;
const nHigh = 230;
const nRange = nHigh - nLow;
for (let i = 0; i < px.length; i += 4)
try
{
const oData = ctx.getImageData(0, 0, nW, nH);
const px = oData.data;
const nLow = 50;
const nHigh = 230;
const nRange = nHigh - nLow;
for (let i = 0; i < px.length; i += 4)
{
const nLum = (px[i] * 299 + px[i + 1] * 587 + px[i + 2] * 114) / 1000;
if (nLum >= nHigh)
px[i + 3] = 0;
else if (nLum > nLow)
px[i + 3] = Math.min(px[i + 3], Math.round(255 * (nHigh - nLum) / nRange));
}
ctx.putImageData(oData, 0, 0);
}
catch (e)
{
const nLum = (px[i] * 299 + px[i + 1] * 587 + px[i + 2] * 114) / 1000;
if (nLum >= nHigh)
px[i + 3] = 0;
else if (nLum > nLow)
px[i + 3] = Math.min(px[i + 3], Math.round(255 * (nHigh - nLum) / nRange));
}
ctx.putImageData(oData, 0, 0);
}
};