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ccc-tnt-psd2ui/npm-packages/mac-v3.4.+/ag-psd/dist/psdWriter.js

691 lines
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JavaScript
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支持 mac
2023-07-24 03:13:08 +00:00
"use strict";
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.writeColor = exports.writePsd = exports.writeSection = exports.writeUnicodeStringWithPadding = exports.writeUnicodeString = exports.writePascalString = exports.writeSignature = exports.writeZeros = exports.writeBytes = exports.writeFixedPointPath32 = exports.writeFixedPoint32 = exports.writeFloat64 = exports.writeFloat32 = exports.writeUint32 = exports.writeInt32 = exports.writeUint16 = exports.writeInt16 = exports.writeUint8 = exports.getWriterBufferNoCopy = exports.getWriterBuffer = exports.createWriter = void 0;
var helpers_1 = require("./helpers");
var additionalInfo_1 = require("./additionalInfo");
var imageResources_1 = require("./imageResources");
function createWriter(size) {
if (size === void 0) { size = 4096; }
var buffer = new ArrayBuffer(size);
var view = new DataView(buffer);
var offset = 0;
return { buffer: buffer, view: view, offset: offset };
}
exports.createWriter = createWriter;
function getWriterBuffer(writer) {
return writer.buffer.slice(0, writer.offset);
}
exports.getWriterBuffer = getWriterBuffer;
function getWriterBufferNoCopy(writer) {
return new Uint8Array(writer.buffer, 0, writer.offset);
}
exports.getWriterBufferNoCopy = getWriterBufferNoCopy;
function writeUint8(writer, value) {
var offset = addSize(writer, 1);
writer.view.setUint8(offset, value);
}
exports.writeUint8 = writeUint8;
function writeInt16(writer, value) {
var offset = addSize(writer, 2);
writer.view.setInt16(offset, value, false);
}
exports.writeInt16 = writeInt16;
function writeUint16(writer, value) {
var offset = addSize(writer, 2);
writer.view.setUint16(offset, value, false);
}
exports.writeUint16 = writeUint16;
function writeInt32(writer, value) {
var offset = addSize(writer, 4);
writer.view.setInt32(offset, value, false);
}
exports.writeInt32 = writeInt32;
function writeUint32(writer, value) {
var offset = addSize(writer, 4);
writer.view.setUint32(offset, value, false);
}
exports.writeUint32 = writeUint32;
function writeFloat32(writer, value) {
var offset = addSize(writer, 4);
writer.view.setFloat32(offset, value, false);
}
exports.writeFloat32 = writeFloat32;
function writeFloat64(writer, value) {
var offset = addSize(writer, 8);
writer.view.setFloat64(offset, value, false);
}
exports.writeFloat64 = writeFloat64;
// 32-bit fixed-point number 16.16
function writeFixedPoint32(writer, value) {
writeInt32(writer, value * (1 << 16));
}
exports.writeFixedPoint32 = writeFixedPoint32;
// 32-bit fixed-point number 8.24
function writeFixedPointPath32(writer, value) {
writeInt32(writer, value * (1 << 24));
}
exports.writeFixedPointPath32 = writeFixedPointPath32;
function writeBytes(writer, buffer) {
if (buffer) {
ensureSize(writer, writer.offset + buffer.length);
var bytes = new Uint8Array(writer.buffer);
bytes.set(buffer, writer.offset);
writer.offset += buffer.length;
}
}
exports.writeBytes = writeBytes;
function writeZeros(writer, count) {
for (var i = 0; i < count; i++) {
writeUint8(writer, 0);
}
}
exports.writeZeros = writeZeros;
function writeSignature(writer, signature) {
if (signature.length !== 4)
throw new Error("Invalid signature: '".concat(signature, "'"));
for (var i = 0; i < 4; i++) {
writeUint8(writer, signature.charCodeAt(i));
}
}
exports.writeSignature = writeSignature;
function writePascalString(writer, text, padTo) {
var length = text.length;
writeUint8(writer, length);
for (var i = 0; i < length; i++) {
var code = text.charCodeAt(i);
writeUint8(writer, code < 128 ? code : '?'.charCodeAt(0));
}
while (++length % padTo) {
writeUint8(writer, 0);
}
}
exports.writePascalString = writePascalString;
function writeUnicodeString(writer, text) {
writeUint32(writer, text.length);
for (var i = 0; i < text.length; i++) {
writeUint16(writer, text.charCodeAt(i));
}
}
exports.writeUnicodeString = writeUnicodeString;
function writeUnicodeStringWithPadding(writer, text) {
writeUint32(writer, text.length + 1);
for (var i = 0; i < text.length; i++) {
writeUint16(writer, text.charCodeAt(i));
}
writeUint16(writer, 0);
}
exports.writeUnicodeStringWithPadding = writeUnicodeStringWithPadding;
function getLargestLayerSize(layers) {
if (layers === void 0) { layers = []; }
var max = 0;
for (var _i = 0, layers_1 = layers; _i < layers_1.length; _i++) {
var layer = layers_1[_i];
if (layer.canvas || layer.imageData) {
var _a = getLayerDimentions(layer), width = _a.width, height = _a.height;
max = Math.max(max, 2 * height + 2 * width * height);
}
if (layer.children) {
max = Math.max(max, getLargestLayerSize(layer.children));
}
}
return max;
}
function writeSection(writer, round, func, writeTotalLength, large) {
if (writeTotalLength === void 0) { writeTotalLength = false; }
if (large === void 0) { large = false; }
if (large)
writeUint32(writer, 0);
var offset = writer.offset;
writeUint32(writer, 0);
func();
var length = writer.offset - offset - 4;
var len = length;
while ((len % round) !== 0) {
writeUint8(writer, 0);
len++;
}
if (writeTotalLength) {
length = len;
}
writer.view.setUint32(offset, length, false);
}
exports.writeSection = writeSection;
function writePsd(writer, psd, options) {
if (options === void 0) { options = {}; }
if (!(+psd.width > 0 && +psd.height > 0))
throw new Error('Invalid document size');
if ((psd.width > 30000 || psd.height > 30000) && !options.psb)
throw new Error('Document size is too large (max is 30000x30000, use PSB format instead)');
var imageResources = psd.imageResources || {};
var opt = __assign(__assign({}, options), { layerIds: new Set(), layerToId: new Map() });
if (opt.generateThumbnail) {
imageResources = __assign(__assign({}, imageResources), { thumbnail: createThumbnail(psd) });
}
var imageData = psd.imageData;
if (!imageData && psd.canvas) {
imageData = psd.canvas.getContext('2d').getImageData(0, 0, psd.canvas.width, psd.canvas.height);
}
if (imageData && (psd.width !== imageData.width || psd.height !== imageData.height))
throw new Error('Document canvas must have the same size as document');
var globalAlpha = !!imageData && (0, helpers_1.hasAlpha)(imageData);
var maxBufferSize = Math.max(getLargestLayerSize(psd.children), 4 * 2 * psd.width * psd.height + 2 * psd.height);
var tempBuffer = new Uint8Array(maxBufferSize);
// header
writeSignature(writer, '8BPS');
writeUint16(writer, options.psb ? 2 : 1); // version
writeZeros(writer, 6);
writeUint16(writer, globalAlpha ? 4 : 3); // channels
writeUint32(writer, psd.height);
writeUint32(writer, psd.width);
writeUint16(writer, 8); // bits per channel
writeUint16(writer, 3 /* ColorMode.RGB */); // we only support saving RGB right now
// color mode data
writeSection(writer, 1, function () {
// TODO: implement
});
// image resources
writeSection(writer, 1, function () {
var _loop_1 = function (handler) {
if (handler.has(imageResources)) {
writeSignature(writer, '8BIM');
writeUint16(writer, handler.key);
writePascalString(writer, '', 2);
writeSection(writer, 2, function () { return handler.write(writer, imageResources); });
}
};
for (var _i = 0, resourceHandlers_1 = imageResources_1.resourceHandlers; _i < resourceHandlers_1.length; _i++) {
var handler = resourceHandlers_1[_i];
_loop_1(handler);
}
});
// layer and mask info
writeSection(writer, 2, function () {
writeLayerInfo(tempBuffer, writer, psd, globalAlpha, opt);
writeGlobalLayerMaskInfo(writer, psd.globalLayerMaskInfo);
writeAdditionalLayerInfo(writer, psd, psd, opt);
}, undefined, !!opt.psb);
// image data
var channels = globalAlpha ? [0, 1, 2, 3] : [0, 1, 2];
var data = imageData || {
data: new Uint8Array(4 * psd.width * psd.height),
width: psd.width,
height: psd.height,
};
writeUint16(writer, 1 /* Compression.RleCompressed */); // Photoshop doesn't support zip compression of composite image data
if (helpers_1.RAW_IMAGE_DATA && psd.imageDataRaw) {
console.log('writing raw image data');
writeBytes(writer, psd.imageDataRaw);
}
else {
writeBytes(writer, (0, helpers_1.writeDataRLE)(tempBuffer, data, channels, !!options.psb));
}
}
exports.writePsd = writePsd;
function writeLayerInfo(tempBuffer, writer, psd, globalAlpha, options) {
writeSection(writer, 4, function () {
var _a;
var layers = [];
addChildren(layers, psd.children);
if (!layers.length)
layers.push({});
writeInt16(writer, globalAlpha ? -layers.length : layers.length);
var layersData = layers.map(function (l, i) { return getChannels(tempBuffer, l, i === 0, options); });
var _loop_2 = function (layerData) {
var layer = layerData.layer, top_1 = layerData.top, left = layerData.left, bottom = layerData.bottom, right = layerData.right, channels = layerData.channels;
writeInt32(writer, top_1);
writeInt32(writer, left);
writeInt32(writer, bottom);
writeInt32(writer, right);
writeUint16(writer, channels.length);
for (var _e = 0, channels_1 = channels; _e < channels_1.length; _e++) {
var c = channels_1[_e];
writeInt16(writer, c.channelId);
if (options.psb)
writeUint32(writer, 0);
writeUint32(writer, c.length);
}
writeSignature(writer, '8BIM');
writeSignature(writer, helpers_1.fromBlendMode[layer.blendMode] || 'norm');
writeUint8(writer, Math.round((0, helpers_1.clamp)((_a = layer.opacity) !== null && _a !== void 0 ? _a : 1, 0, 1) * 255));
writeUint8(writer, layer.clipping ? 1 : 0);
var flags = 0x08; // 1 for Photoshop 5.0 and later, tells if bit 4 has useful information
if (layer.transparencyProtected)
flags |= 0x01;
if (layer.hidden)
flags |= 0x02;
if (layer.vectorMask || (layer.sectionDivider && layer.sectionDivider.type !== 0 /* SectionDividerType.Other */)) {
flags |= 0x10; // pixel data irrelevant to appearance of document
}
if (layer.effects && (0, additionalInfo_1.hasMultiEffects)(layer.effects)) { // TODO: this is not correct
flags |= 0x20; // just guessing this one, might be completely incorrect
}
// if ('_2' in layer) flags |= 0x20; // TEMP!!!
writeUint8(writer, flags);
writeUint8(writer, 0); // filler
writeSection(writer, 1, function () {
writeLayerMaskData(writer, layer, layerData);
writeLayerBlendingRanges(writer, psd);
writePascalString(writer, layer.name || '', 4);
writeAdditionalLayerInfo(writer, layer, psd, options);
});
};
// layer records
for (var _i = 0, layersData_1 = layersData; _i < layersData_1.length; _i++) {
var layerData = layersData_1[_i];
_loop_2(layerData);
}
// layer channel image data
for (var _b = 0, layersData_2 = layersData; _b < layersData_2.length; _b++) {
var layerData = layersData_2[_b];
for (var _c = 0, _d = layerData.channels; _c < _d.length; _c++) {
var channel = _d[_c];
writeUint16(writer, channel.compression);
if (channel.buffer) {
writeBytes(writer, channel.buffer);
}
}
}
}, true, options.psb);
}
function writeLayerMaskData(writer, _a, layerData) {
var mask = _a.mask;
writeSection(writer, 1, function () {
if (!mask)
return;
var m = layerData.mask || {};
writeInt32(writer, m.top);
writeInt32(writer, m.left);
writeInt32(writer, m.bottom);
writeInt32(writer, m.right);
writeUint8(writer, mask.defaultColor);
var params = 0;
if (mask.userMaskDensity !== undefined)
params |= 1 /* MaskParams.UserMaskDensity */;
if (mask.userMaskFeather !== undefined)
params |= 2 /* MaskParams.UserMaskFeather */;
if (mask.vectorMaskDensity !== undefined)
params |= 4 /* MaskParams.VectorMaskDensity */;
if (mask.vectorMaskFeather !== undefined)
params |= 8 /* MaskParams.VectorMaskFeather */;
var flags = 0;
if (mask.disabled)
flags |= 2 /* LayerMaskFlags.LayerMaskDisabled */;
if (mask.positionRelativeToLayer)
flags |= 1 /* LayerMaskFlags.PositionRelativeToLayer */;
if (mask.fromVectorData)
flags |= 8 /* LayerMaskFlags.LayerMaskFromRenderingOtherData */;
if (params)
flags |= 16 /* LayerMaskFlags.MaskHasParametersAppliedToIt */;
writeUint8(writer, flags);
if (params) {
writeUint8(writer, params);
if (mask.userMaskDensity !== undefined)
writeUint8(writer, Math.round(mask.userMaskDensity * 0xff));
if (mask.userMaskFeather !== undefined)
writeFloat64(writer, mask.userMaskFeather);
if (mask.vectorMaskDensity !== undefined)
writeUint8(writer, Math.round(mask.vectorMaskDensity * 0xff));
if (mask.vectorMaskFeather !== undefined)
writeFloat64(writer, mask.vectorMaskFeather);
}
// TODO: handle rest of the fields
writeZeros(writer, 2);
});
}
function writeLayerBlendingRanges(writer, psd) {
writeSection(writer, 1, function () {
writeUint32(writer, 65535);
writeUint32(writer, 65535);
var channels = psd.channels || 0; // TODO: use always 4 instead ?
// channels = 4; // TESTING
for (var i = 0; i < channels; i++) {
writeUint32(writer, 65535);
writeUint32(writer, 65535);
}
});
}
function writeGlobalLayerMaskInfo(writer, info) {
writeSection(writer, 1, function () {
if (info) {
writeUint16(writer, info.overlayColorSpace);
writeUint16(writer, info.colorSpace1);
writeUint16(writer, info.colorSpace2);
writeUint16(writer, info.colorSpace3);
writeUint16(writer, info.colorSpace4);
writeUint16(writer, info.opacity * 0xff);
writeUint8(writer, info.kind);
writeZeros(writer, 3);
}
});
}
function writeAdditionalLayerInfo(writer, target, psd, options) {
var _loop_3 = function (handler) {
var key = handler.key;
if (key === 'Txt2' && options.invalidateTextLayers)
return "continue";
if (key === 'vmsk' && options.psb)
key = 'vsms';
if (handler.has(target)) {
var large = options.psb && helpers_1.largeAdditionalInfoKeys.indexOf(key) !== -1;
writeSignature(writer, large ? '8B64' : '8BIM');
writeSignature(writer, key);
var fourBytes = key === 'Txt2' || key === 'luni' || key === 'vmsk' || key === 'artb' || key === 'artd' ||
key === 'vogk' || key === 'SoLd' || key === 'lnk2' || key === 'vscg' || key === 'vsms' || key === 'GdFl' ||
key === 'lmfx' || key === 'lrFX' || key === 'cinf' || key === 'PlLd' || key === 'Anno';
writeSection(writer, fourBytes ? 4 : 2, function () {
handler.write(writer, target, psd, options);
}, key !== 'Txt2' && key !== 'cinf' && key !== 'extn', large);
}
};
for (var _i = 0, infoHandlers_1 = additionalInfo_1.infoHandlers; _i < infoHandlers_1.length; _i++) {
var handler = infoHandlers_1[_i];
_loop_3(handler);
}
}
function addChildren(layers, children) {
if (!children)
return;
for (var _i = 0, children_1 = children; _i < children_1.length; _i++) {
var c = children_1[_i];
if (c.children && c.canvas)
throw new Error("Invalid layer, cannot have both 'canvas' and 'children' properties");
if (c.children && c.imageData)
throw new Error("Invalid layer, cannot have both 'imageData' and 'children' properties");
if (c.children) {
layers.push({
name: '</Layer group>',
sectionDivider: {
type: 3 /* SectionDividerType.BoundingSectionDivider */,
},
// TESTING
// nameSource: 'lset',
// id: [4, 0, 0, 8, 11, 0, 0, 0, 0, 14][layers.length] || 0,
// layerColor: 'none',
// timestamp: [1611346817.349021, 0, 0, 1611346817.349175, 1611346817.3491833, 0, 0, 0, 0, 1611346817.349832][layers.length] || 0,
// protected: {},
// referencePoint: { x: 0, y: 0 },
});
addChildren(layers, c.children);
layers.push(__assign({ sectionDivider: {
type: c.opened === false ? 2 /* SectionDividerType.ClosedFolder */ : 1 /* SectionDividerType.OpenFolder */,
key: helpers_1.fromBlendMode[c.blendMode] || 'pass',
subType: 0,
} }, c));
}
else {
layers.push(__assign({}, c));
}
}
}
function resizeBuffer(writer, size) {
var newLength = writer.buffer.byteLength;
do {
newLength *= 2;
} while (size > newLength);
var newBuffer = new ArrayBuffer(newLength);
var newBytes = new Uint8Array(newBuffer);
var oldBytes = new Uint8Array(writer.buffer);
newBytes.set(oldBytes);
writer.buffer = newBuffer;
writer.view = new DataView(writer.buffer);
}
function ensureSize(writer, size) {
if (size > writer.buffer.byteLength) {
resizeBuffer(writer, size);
}
}
function addSize(writer, size) {
var offset = writer.offset;
ensureSize(writer, writer.offset += size);
return offset;
}
function createThumbnail(psd) {
var canvas = (0, helpers_1.createCanvas)(10, 10);
var scale = 1;
if (psd.width > psd.height) {
canvas.width = 160;
canvas.height = Math.floor(psd.height * (canvas.width / psd.width));
scale = canvas.width / psd.width;
}
else {
canvas.height = 160;
canvas.width = Math.floor(psd.width * (canvas.height / psd.height));
scale = canvas.height / psd.height;
}
var context = canvas.getContext('2d');
context.scale(scale, scale);
if (psd.imageData) {
var temp = (0, helpers_1.createCanvas)(psd.imageData.width, psd.imageData.height);
temp.getContext('2d').putImageData(psd.imageData, 0, 0);
context.drawImage(temp, 0, 0);
}
else if (psd.canvas) {
context.drawImage(psd.canvas, 0, 0);
}
return canvas;
}
function getChannels(tempBuffer, layer, background, options) {
var layerData = getLayerChannels(tempBuffer, layer, background, options);
var mask = layer.mask;
if (mask) {
var top_2 = mask.top | 0;
var left = mask.left | 0;
var right = mask.right | 0;
var bottom = mask.bottom | 0;
var _a = getLayerDimentions(mask), width = _a.width, height = _a.height;
var imageData = mask.imageData;
if (!imageData && mask.canvas && width && height) {
imageData = mask.canvas.getContext('2d').getImageData(0, 0, width, height);
}
if (width && height && imageData) {
right = left + width;
bottom = top_2 + height;
if (imageData.width !== width || imageData.height !== height) {
throw new Error('Invalid imageData dimentions');
}
var buffer = void 0;
var compression = void 0;
if (helpers_1.RAW_IMAGE_DATA && layer.maskDataRaw) {
// console.log('written raw layer image data');
buffer = layer.maskDataRaw;
compression = 1 /* Compression.RleCompressed */;
}
else if (options.compress) {
buffer = (0, helpers_1.writeDataZipWithoutPrediction)(imageData, [0]);
compression = 2 /* Compression.ZipWithoutPrediction */;
}
else {
buffer = (0, helpers_1.writeDataRLE)(tempBuffer, imageData, [0], !!options.psb);
compression = 1 /* Compression.RleCompressed */;
}
layerData.mask = { top: top_2, left: left, right: right, bottom: bottom };
layerData.channels.push({ channelId: -2 /* ChannelID.UserMask */, compression: compression, buffer: buffer, length: 2 + buffer.length });
}
else {
layerData.mask = { top: 0, left: 0, right: 0, bottom: 0 };
layerData.channels.push({ channelId: -2 /* ChannelID.UserMask */, compression: 0 /* Compression.RawData */, buffer: new Uint8Array(0), length: 0 });
}
}
return layerData;
}
function getLayerDimentions(_a) {
var canvas = _a.canvas, imageData = _a.imageData;
return imageData || canvas || { width: 0, height: 0 };
}
function cropImageData(data, left, top, width, height) {
var croppedData = (0, helpers_1.createImageData)(width, height);
var srcData = data.data;
var dstData = croppedData.data;
for (var y = 0; y < height; y++) {
for (var x = 0; x < width; x++) {
var src = ((x + left) + (y + top) * width) * 4;
var dst = (x + y * width) * 4;
dstData[dst] = srcData[src];
dstData[dst + 1] = srcData[src + 1];
dstData[dst + 2] = srcData[src + 2];
dstData[dst + 3] = srcData[src + 3];
}
}
return croppedData;
}
function getLayerChannels(tempBuffer, layer, background, options) {
var _a;
var top = layer.top | 0;
var left = layer.left | 0;
var right = layer.right | 0;
var bottom = layer.bottom | 0;
var channels = [
{ channelId: -1 /* ChannelID.Transparency */, compression: 0 /* Compression.RawData */, buffer: undefined, length: 2 },
{ channelId: 0 /* ChannelID.Color0 */, compression: 0 /* Compression.RawData */, buffer: undefined, length: 2 },
{ channelId: 1 /* ChannelID.Color1 */, compression: 0 /* Compression.RawData */, buffer: undefined, length: 2 },
{ channelId: 2 /* ChannelID.Color2 */, compression: 0 /* Compression.RawData */, buffer: undefined, length: 2 },
];
var _b = getLayerDimentions(layer), width = _b.width, height = _b.height;
if (!(layer.canvas || layer.imageData) || !width || !height) {
right = left;
bottom = top;
return { layer: layer, top: top, left: left, right: right, bottom: bottom, channels: channels };
}
right = left + width;
bottom = top + height;
var data = layer.imageData || layer.canvas.getContext('2d').getImageData(0, 0, width, height);
if (options.trimImageData) {
var trimmed = trimData(data);
if (trimmed.left !== 0 || trimmed.top !== 0 || trimmed.right !== data.width || trimmed.bottom !== data.height) {
left += trimmed.left;
top += trimmed.top;
right -= (data.width - trimmed.right);
bottom -= (data.height - trimmed.bottom);
width = right - left;
height = bottom - top;
if (!width || !height) {
return { layer: layer, top: top, left: left, right: right, bottom: bottom, channels: channels };
}
if (layer.imageData) {
data = cropImageData(data, trimmed.left, trimmed.top, width, height);
}
else {
data = layer.canvas.getContext('2d').getImageData(trimmed.left, trimmed.top, width, height);
}
}
}
var channelIds = [
0 /* ChannelID.Color0 */,
1 /* ChannelID.Color1 */,
2 /* ChannelID.Color2 */,
];
if (!background || options.noBackground || layer.mask || (0, helpers_1.hasAlpha)(data) || (helpers_1.RAW_IMAGE_DATA && ((_a = layer.imageDataRaw) === null || _a === void 0 ? void 0 : _a['-1']))) {
channelIds.unshift(-1 /* ChannelID.Transparency */);
}
channels = channelIds.map(function (channelId) {
var offset = (0, helpers_1.offsetForChannel)(channelId, false); // TODO: psd.colorMode === ColorMode.CMYK);
var buffer;
var compression;
if (helpers_1.RAW_IMAGE_DATA && layer.imageDataRaw) {
// console.log('written raw layer image data');
buffer = layer.imageDataRaw[channelId];
compression = 1 /* Compression.RleCompressed */;
}
else if (options.compress) {
buffer = (0, helpers_1.writeDataZipWithoutPrediction)(data, [offset]);
compression = 2 /* Compression.ZipWithoutPrediction */;
}
else {
buffer = (0, helpers_1.writeDataRLE)(tempBuffer, data, [offset], !!options.psb);
compression = 1 /* Compression.RleCompressed */;
}
return { channelId: channelId, compression: compression, buffer: buffer, length: 2 + buffer.length };
});
return { layer: layer, top: top, left: left, right: right, bottom: bottom, channels: channels };
}
function isRowEmpty(_a, y, left, right) {
var data = _a.data, width = _a.width;
var start = ((y * width + left) * 4 + 3) | 0;
var end = (start + (right - left) * 4) | 0;
for (var i = start; i < end; i = (i + 4) | 0) {
if (data[i] !== 0) {
return false;
}
}
return true;
}
function isColEmpty(_a, x, top, bottom) {
var data = _a.data, width = _a.width;
var stride = (width * 4) | 0;
var start = (top * stride + x * 4 + 3) | 0;
for (var y = top, i = start; y < bottom; y++, i = (i + stride) | 0) {
if (data[i] !== 0) {
return false;
}
}
return true;
}
function trimData(data) {
var top = 0;
var left = 0;
var right = data.width;
var bottom = data.height;
while (top < bottom && isRowEmpty(data, top, left, right))
top++;
while (bottom > top && isRowEmpty(data, bottom - 1, left, right))
bottom--;
while (left < right && isColEmpty(data, left, top, bottom))
left++;
while (right > left && isColEmpty(data, right - 1, top, bottom))
right--;
return { top: top, left: left, right: right, bottom: bottom };
}
function writeColor(writer, color) {
if (!color) {
writeUint16(writer, 0 /* ColorSpace.RGB */);
writeZeros(writer, 8);
}
else if ('r' in color) {
writeUint16(writer, 0 /* ColorSpace.RGB */);
writeUint16(writer, Math.round(color.r * 257));
writeUint16(writer, Math.round(color.g * 257));
writeUint16(writer, Math.round(color.b * 257));
writeUint16(writer, 0);
}
else if ('l' in color) {
writeUint16(writer, 7 /* ColorSpace.Lab */);
writeInt16(writer, Math.round(color.l * 10000));
writeInt16(writer, Math.round(color.a < 0 ? (color.a * 12800) : (color.a * 12700)));
writeInt16(writer, Math.round(color.b < 0 ? (color.b * 12800) : (color.b * 12700)));
writeUint16(writer, 0);
}
else if ('h' in color) {
writeUint16(writer, 1 /* ColorSpace.HSB */);
writeUint16(writer, Math.round(color.h * 0xffff));
writeUint16(writer, Math.round(color.s * 0xffff));
writeUint16(writer, Math.round(color.b * 0xffff));
writeUint16(writer, 0);
}
else if ('c' in color) {
writeUint16(writer, 2 /* ColorSpace.CMYK */);
writeUint16(writer, Math.round(color.c * 257));
writeUint16(writer, Math.round(color.m * 257));
writeUint16(writer, Math.round(color.y * 257));
writeUint16(writer, Math.round(color.k * 257));
}
else {
writeUint16(writer, 8 /* ColorSpace.Grayscale */);
writeUint16(writer, Math.round(color.k * 10000 / 255));
writeZeros(writer, 6);
}
}
exports.writeColor = writeColor;
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