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For bug 57315

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This commit is contained in:
Oleg Korshul 2022-05-27 11:51:14 +03:00 committed by catbasilio
parent f12cc5c35e
commit fe1e736ae4
1 changed files with 97 additions and 20 deletions
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117
apps/common/main/lib/component/ComboBoxFonts.js
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@ -90,6 +90,7 @@ define([
function CThumbnailLoader() {
this.supportBinaryFormat = (window['AscDesktopEditor'] && !window['AscDesktopEditor']['isSupportBinaryFontsSprite']) ? false : true;
// наш формат - альфамаска с сжатием типа rle для полностью прозрачных пикселов
this.image = null;
this.binaryFormat = null;
@ -97,7 +98,8 @@ define([
this.width = 0;
this.height = 0;
this.heightOne = 0;
this.count = 0;
this.count = 0;
this.offsets = null;
this.load = function(url, callback) {
if (!callback)
@ -123,7 +125,7 @@ define([
xhr.onload = function() {
// TODO: check errors
me.binaryFormat = this.response;
me.binaryFormat = new Uint8Array(this.response);
callback();
};
@ -135,38 +137,74 @@ define([
//var t1 = performance.now();
var binaryAlpha = new Uint8Array(arrayBuffer);
var binaryAlpha = this.binaryFormat;
this.width = (binaryAlpha[0] << 24) | (binaryAlpha[1] << 16) | (binaryAlpha[2] << 8) | (binaryAlpha[3] << 0);
this.heightOne = (binaryAlpha[4] << 24) | (binaryAlpha[5] << 16) | (binaryAlpha[6] << 8) | (binaryAlpha[7] << 0);
this.count = (binaryAlpha[8] << 24) | (binaryAlpha[9] << 16) | (binaryAlpha[10] << 8) | (binaryAlpha[11] << 0);
this.height = this.count * this.heightOne;
this.data = new Uint8ClampedArray(4 * this.width * this.height);
var MAX_MEMORY_SIZE = 50000000;
var memorySize = 4 * this.width * this.height;
var isOffsets = (memorySize > MAX_MEMORY_SIZE) ? true : false;
if (!isOffsets)
this.data = new Uint8ClampedArray(memorySize);
else
this.offsets = new Array(this.count);
var binaryIndex = 12;
var binaryLen = binaryAlpha.length;
var imagePixels = this.data;
var index = 0;
var len0 = 0;
var tmpValue = 0;
while (binaryIndex < binaryLen) {
tmpValue = binaryAlpha[binaryIndex++];
if (0 == tmpValue) {
len0 = binaryAlpha[binaryIndex++];
while (len0 > 0) {
len0--;
imagePixels[index] = imagePixels[index + 1] = imagePixels[index + 2] = 255;
imagePixels[index + 3] = 0; // this value is already 0.
if (!isOffsets) {
var imagePixels = this.data;
while (binaryIndex < binaryLen) {
tmpValue = binaryAlpha[binaryIndex++];
if (0 == tmpValue) {
len0 = binaryAlpha[binaryIndex++];
while (len0 > 0) {
len0--;
imagePixels[index] = imagePixels[index + 1] = imagePixels[index + 2] = 255;
imagePixels[index + 3] = 0; // this value is already 0.
index += 4;
}
} else {
imagePixels[index] = imagePixels[index + 1] = imagePixels[index + 2] = 255 - tmpValue;
imagePixels[index + 3] = tmpValue;
index += 4;
}
} else {
imagePixels[index] = imagePixels[index + 1] = imagePixels[index + 2] = 255 - tmpValue;
imagePixels[index + 3] = tmpValue;
index += 4;
}
} else {
var module = this.width * this.heightOne;
var moduleCur = module - 1;
while (binaryIndex < binaryLen) {
tmpValue = binaryAlpha[binaryIndex++];
if (0 == tmpValue) {
len0 = binaryAlpha[binaryIndex++];
while (len0 > 0) {
len0--;
moduleCur++;
if (moduleCur === module) {
this.offsets[index++] = { pos : binaryIndex, len : len0 + 1 };
moduleCur = 0;
}
}
} else {
moduleCur++;
if (moduleCur === module) {
this.offsets[index++] = { pos : binaryIndex - 1, len : -1 };
moduleCur = 0;
}
}
}
}
if (!this.offsets)
delete this.binaryFormat;
//var t2 = performance.now();
//console.log(t2 - t1);
};
@ -186,14 +224,53 @@ define([
}
if (this.supportBinaryFormat) {
if (!this.data) {
if (!this.data && !this.offsets) {
this.openBinary(this.binaryFormat);
delete this.binaryFormat;
}
var dataTmp = ctx.createImageData(this.width, this.heightOne);
var sizeImage = 4 * this.width * this.heightOne;
dataTmp.data.set(new Uint8ClampedArray(this.data.buffer, index * sizeImage, sizeImage));
if (!this.offsets) {
dataTmp.data.set(new Uint8ClampedArray(this.data.buffer, index * sizeImage, sizeImage));
} else {
var binaryAlpha = this.binaryFormat;
var binaryIndex = this.offsets[index].pos;
var alphaChannel = 0;
var pixelsCount = this.width * this.heightOne;
var tmpValue = 0, len0 = 0;
var imagePixels = dataTmp.data;
if (-1 != this.offsets[index].len) {
/*
// this values is already 0.
for (var i = 0; i < this.offsets[index].len; i++) {
pixels[alphaChannel] = 0;
alphaChannel += 4;
}
*/
alphaChannel += 4 * this.offsets[index].len;
}
while (pixelsCount > 0) {
tmpValue = binaryAlpha[binaryIndex++];
if (0 == tmpValue) {
len0 = binaryAlpha[binaryIndex++];
if (len0 > pixelsCount)
len0 = pixelsCount;
while (len0 > 0) {
len0--;
imagePixels[alphaChannel] = imagePixels[alphaChannel + 1] = imagePixels[alphaChannel + 2] = 255;
imagePixels[alphaChannel + 3] = 0; // this value is already 0.
alphaChannel += 4;
pixelsCount--;
}
} else {
imagePixels[alphaChannel] = imagePixels[alphaChannel + 1] = imagePixels[alphaChannel + 2] = 255 - tmpValue;
imagePixels[alphaChannel + 3] = tmpValue;
alphaChannel += 4;
pixelsCount--;
}
}
}
ctx.putImageData(dataTmp, 0, 0);
} else {
ctx.clearRect(0, 0, this.width, this.heightOne);