mirror of
https://github.com/n8n-io/n8n.git
synced 2024-12-26 13:14:07 -08:00
661 lines
15 KiB
TypeScript
661 lines
15 KiB
TypeScript
import {
|
|
BINARY_ENCODING,
|
|
IExecuteSingleFunctions,
|
|
} from 'n8n-core';
|
|
import {
|
|
IDataObject,
|
|
INodeExecutionData,
|
|
INodeType,
|
|
INodeTypeDescription,
|
|
} from 'n8n-workflow';
|
|
import * as gm from 'gm';
|
|
|
|
|
|
export class EditImage implements INodeType {
|
|
description: INodeTypeDescription = {
|
|
displayName: 'Edit Image',
|
|
name: 'editImage',
|
|
icon: 'fa:image',
|
|
group: ['transform'],
|
|
version: 1,
|
|
description: 'Edits an image like blur, resize or adding border and text',
|
|
defaults: {
|
|
name: 'Edit Image',
|
|
color: '#553399',
|
|
},
|
|
inputs: ['main'],
|
|
outputs: ['main'],
|
|
properties: [
|
|
{
|
|
displayName: 'Operation',
|
|
name: 'operation',
|
|
type: 'options',
|
|
options: [
|
|
{
|
|
name: 'Blur',
|
|
value: 'blur',
|
|
description: 'Adds a blur to the image and so makes it less sharp',
|
|
},
|
|
{
|
|
name: 'Border',
|
|
value: 'border',
|
|
description: 'Adds a border to the image',
|
|
},
|
|
{
|
|
name: 'Crop',
|
|
value: 'crop',
|
|
description: 'Crops the image',
|
|
},
|
|
{
|
|
name: 'Get Information',
|
|
value: 'information',
|
|
description: 'Returns image information like resolution',
|
|
},
|
|
{
|
|
name: 'Rotate',
|
|
value: 'rotate',
|
|
description: 'Rotate image',
|
|
},
|
|
{
|
|
name: 'Resize',
|
|
value: 'resize',
|
|
description: 'Change the size of image',
|
|
},
|
|
{
|
|
name: 'Text',
|
|
value: 'text',
|
|
description: 'Adds text to image',
|
|
},
|
|
],
|
|
default: 'border',
|
|
description: 'The operation to perform.',
|
|
},
|
|
|
|
{
|
|
displayName: 'Property Name',
|
|
name: 'dataPropertyName',
|
|
type: 'string',
|
|
default: 'data',
|
|
description: 'Name of the binary property in which the image data can be found.',
|
|
},
|
|
|
|
|
|
// ----------------------------------
|
|
// text
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Text',
|
|
name: 'text',
|
|
typeOptions: {
|
|
rows: 5,
|
|
},
|
|
type: 'string',
|
|
default: '',
|
|
placeholder: 'Text to render',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'text'
|
|
],
|
|
},
|
|
},
|
|
description: 'Text to write on the image.',
|
|
},
|
|
{
|
|
displayName: 'Font Size',
|
|
name: 'fontSize',
|
|
type: 'number',
|
|
default: 18,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'text'
|
|
],
|
|
},
|
|
},
|
|
description: 'Size of the text.',
|
|
},
|
|
{
|
|
displayName: 'Font Color',
|
|
name: 'fontColor',
|
|
type: 'color',
|
|
default: '#000000',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'text'
|
|
],
|
|
},
|
|
},
|
|
description: 'Color of the text.',
|
|
},
|
|
{
|
|
displayName: 'Position X',
|
|
name: 'positionX',
|
|
type: 'number',
|
|
default: 50,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'text'
|
|
],
|
|
},
|
|
},
|
|
description: 'X (horizontal) position of the text.',
|
|
},
|
|
{
|
|
displayName: 'Position Y',
|
|
name: 'positionY',
|
|
type: 'number',
|
|
default: 50,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'text'
|
|
],
|
|
},
|
|
},
|
|
description: 'Y (vertical) position of the text.',
|
|
},
|
|
{
|
|
displayName: 'Max Line Length',
|
|
name: 'lineLength',
|
|
type: 'number',
|
|
typeOptions: {
|
|
minValue: 1,
|
|
},
|
|
default: 80,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'text'
|
|
],
|
|
},
|
|
},
|
|
description: 'Max amount of characters in a line before a<br />line-break should get added.',
|
|
},
|
|
|
|
|
|
// ----------------------------------
|
|
// blur
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Blur',
|
|
name: 'blur',
|
|
type: 'number',
|
|
typeOptions: {
|
|
minValue: 0,
|
|
maxValue: 1000,
|
|
},
|
|
default: 5,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'blur'
|
|
],
|
|
},
|
|
},
|
|
description: 'How strong the blur should be',
|
|
},
|
|
{
|
|
displayName: 'Sigma',
|
|
name: 'sigma',
|
|
type: 'number',
|
|
typeOptions: {
|
|
minValue: 0,
|
|
maxValue: 1000,
|
|
},
|
|
default: 2,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'blur'
|
|
],
|
|
},
|
|
},
|
|
description: 'The sigma of the blur',
|
|
},
|
|
|
|
|
|
// ----------------------------------
|
|
// border
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Border Width',
|
|
name: 'borderWidth',
|
|
type: 'number',
|
|
default: 10,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'border'
|
|
],
|
|
},
|
|
},
|
|
description: 'The width of the border',
|
|
},
|
|
{
|
|
displayName: 'Border Height',
|
|
name: 'borderHeight',
|
|
type: 'number',
|
|
default: 10,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'border'
|
|
],
|
|
},
|
|
},
|
|
description: 'The height of the border',
|
|
},
|
|
{
|
|
displayName: 'Border Color',
|
|
name: 'borderColor',
|
|
type: 'color',
|
|
default: '#000000',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'border'
|
|
],
|
|
},
|
|
},
|
|
description: 'Color of the border.',
|
|
},
|
|
|
|
|
|
// ----------------------------------
|
|
// crop
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Width',
|
|
name: 'width',
|
|
type: 'number',
|
|
default: 500,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'crop'
|
|
],
|
|
},
|
|
},
|
|
description: 'Crop width',
|
|
},
|
|
{
|
|
displayName: 'Height',
|
|
name: 'height',
|
|
type: 'number',
|
|
default: 500,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'crop'
|
|
],
|
|
},
|
|
},
|
|
description: 'Crop height',
|
|
},
|
|
{
|
|
displayName: 'Position X',
|
|
name: 'positionX',
|
|
type: 'number',
|
|
default: 0,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'crop'
|
|
],
|
|
},
|
|
},
|
|
description: 'X (horizontal) position to crop from.',
|
|
},
|
|
{
|
|
displayName: 'Position Y',
|
|
name: 'positionY',
|
|
type: 'number',
|
|
default: 0,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'crop'
|
|
],
|
|
},
|
|
},
|
|
description: 'Y (vertical) position to crop from.',
|
|
},
|
|
|
|
// ----------------------------------
|
|
// resize
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Width',
|
|
name: 'width',
|
|
type: 'number',
|
|
default: 500,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'resize'
|
|
],
|
|
},
|
|
},
|
|
description: 'New width of the image',
|
|
},
|
|
{
|
|
displayName: 'Height',
|
|
name: 'height',
|
|
type: 'number',
|
|
default: 500,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'resize'
|
|
],
|
|
},
|
|
},
|
|
description: 'New height of the image',
|
|
},
|
|
{
|
|
displayName: 'Option',
|
|
name: 'resizeOption',
|
|
type: 'options',
|
|
options: [
|
|
{
|
|
name: 'Ignore Aspect Ratio',
|
|
value: 'ignoreAspectRatio',
|
|
description: 'Ignore aspect ratio and resize exactly to specified values',
|
|
},
|
|
{
|
|
name: 'Maximum area',
|
|
value: 'maximumArea',
|
|
description: 'Specified values are maximum area',
|
|
},
|
|
{
|
|
name: 'Minimum Area',
|
|
value: 'minimumArea',
|
|
description: 'Specified values are minimum area',
|
|
},
|
|
{
|
|
name: 'Only if larger',
|
|
value: 'onlyIfLarger',
|
|
description: 'Resize only if image is larger than width or height',
|
|
},
|
|
{
|
|
name: 'Only if smaller',
|
|
value: 'onlyIfSmaller',
|
|
description: 'Resize only if image is smaller than width or height',
|
|
},
|
|
],
|
|
default: 'maximumArea',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'resize'
|
|
],
|
|
},
|
|
},
|
|
description: 'How to resize the image.',
|
|
},
|
|
|
|
// ----------------------------------
|
|
// rotate
|
|
// ----------------------------------
|
|
{
|
|
displayName: 'Rotate',
|
|
name: 'rotate',
|
|
type: 'number',
|
|
typeOptions: {
|
|
minValue: -360,
|
|
maxValue: 360,
|
|
},
|
|
default: 0,
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'rotate'
|
|
],
|
|
},
|
|
},
|
|
description: 'How much the image should be rotated',
|
|
},
|
|
{
|
|
displayName: 'Background Color',
|
|
name: 'backgroundColor',
|
|
type: 'color',
|
|
default: '#ffffff',
|
|
displayOptions: {
|
|
show: {
|
|
operation: [
|
|
'rotate'
|
|
],
|
|
},
|
|
},
|
|
description: 'The color to use for the background when image gets rotated by anything which is not a multiple of 90..',
|
|
},
|
|
|
|
{
|
|
displayName: 'Options',
|
|
name: 'options',
|
|
type: 'collection',
|
|
placeholder: 'Add Option',
|
|
default: {},
|
|
displayOptions: {
|
|
hide: {
|
|
operation: [
|
|
'information',
|
|
],
|
|
},
|
|
},
|
|
options: [
|
|
{
|
|
displayName: 'File Name',
|
|
name: 'fileName',
|
|
type: 'string',
|
|
default: '',
|
|
description: 'File name to set in binary data.',
|
|
},
|
|
{
|
|
displayName: 'Format',
|
|
name: 'format',
|
|
type: 'options',
|
|
options: [
|
|
{
|
|
name: 'bmp',
|
|
value: 'bmp',
|
|
},
|
|
{
|
|
name: 'gif',
|
|
value: 'gif',
|
|
},
|
|
{
|
|
name: 'jpeg',
|
|
value: 'jpeg',
|
|
},
|
|
{
|
|
name: 'png',
|
|
value: 'png',
|
|
},
|
|
{
|
|
name: 'tiff',
|
|
value: 'tiff',
|
|
},
|
|
],
|
|
default: 'jpeg',
|
|
description: 'Set the output image format.',
|
|
},
|
|
{
|
|
displayName: 'Quality',
|
|
name: 'quality',
|
|
type: 'number',
|
|
typeOptions: {
|
|
minValue: 0,
|
|
maxValue: 100,
|
|
},
|
|
default: 100,
|
|
displayOptions: {
|
|
show: {
|
|
format: [
|
|
'jpeg',
|
|
'png',
|
|
'tiff',
|
|
],
|
|
},
|
|
},
|
|
description: 'Sets the jpeg|png|tiff compression level from 0 to 100 (best).',
|
|
},
|
|
|
|
],
|
|
},
|
|
]
|
|
};
|
|
|
|
|
|
async executeSingle(this: IExecuteSingleFunctions): Promise<INodeExecutionData> {
|
|
const item = this.getInputData();
|
|
|
|
const operation = this.getNodeParameter('operation', 0) as string;
|
|
const dataPropertyName = this.getNodeParameter('dataPropertyName') as string;
|
|
|
|
const options = this.getNodeParameter('options', {}) as IDataObject;
|
|
|
|
// TODO: Later should make so that it sends directly a valid buffer and the buffer.from stuff is not needed anymore
|
|
if (item.binary === undefined) {
|
|
return item;
|
|
}
|
|
|
|
if (item.binary[dataPropertyName as string] === undefined) {
|
|
return item;
|
|
}
|
|
|
|
let gmInstance = gm(Buffer.from(item.binary![dataPropertyName as string].data, BINARY_ENCODING));
|
|
|
|
if (operation === 'blur') {
|
|
const blur = this.getNodeParameter('blur') as number;
|
|
const sigma = this.getNodeParameter('sigma') as number;
|
|
gmInstance = gmInstance.blur(blur, sigma);
|
|
} else if (operation === 'border') {
|
|
const borderWidth = this.getNodeParameter('borderWidth') as number;
|
|
const borderHeight = this.getNodeParameter('borderHeight') as number;
|
|
const borderColor = this.getNodeParameter('borderColor') as string;
|
|
|
|
gmInstance = gmInstance.borderColor(borderColor).border(borderWidth, borderHeight);
|
|
} else if (operation === 'crop') {
|
|
const width = this.getNodeParameter('width') as number;
|
|
const height = this.getNodeParameter('height') as number;
|
|
|
|
const positionX = this.getNodeParameter('positionX') as number;
|
|
const positionY = this.getNodeParameter('positionY') as number;
|
|
|
|
gmInstance = gmInstance.crop(width, height, positionX, positionY);
|
|
} else if (operation === 'information') {
|
|
const imageData = await new Promise<IDataObject>((resolve, reject) => {
|
|
gmInstance = gmInstance.identify((error, imageData) => {
|
|
if (error) {
|
|
reject(error);
|
|
return;
|
|
}
|
|
resolve(imageData as unknown as IDataObject);
|
|
});
|
|
});
|
|
|
|
item.json = imageData;
|
|
} else if (operation === 'resize') {
|
|
const width = this.getNodeParameter('width') as number;
|
|
const height = this.getNodeParameter('height') as number;
|
|
const resizeOption = this.getNodeParameter('resizeOption') as string;
|
|
|
|
// By default use "maximumArea"
|
|
let option: gm.ResizeOption = '@';
|
|
if (resizeOption === 'ignoreAspectRatio') {
|
|
option = '!';
|
|
} else if (resizeOption === 'minimumArea') {
|
|
option = '^';
|
|
} else if (resizeOption === 'onlyIfSmaller') {
|
|
option = '<';
|
|
} else if (resizeOption === 'onlyIfLarger') {
|
|
option = '>';
|
|
}
|
|
|
|
gmInstance = gmInstance.resize(width, height, option);
|
|
} else if (operation === 'rotate') {
|
|
const rotate = this.getNodeParameter('rotate') as number;
|
|
const backgroundColor = this.getNodeParameter('backgroundColor') as string;
|
|
gmInstance = gmInstance.rotate(backgroundColor, rotate);
|
|
} else if (operation === 'text') {
|
|
const fontColor = this.getNodeParameter('fontColor') as string;
|
|
const fontSize = this.getNodeParameter('fontSize') as number;
|
|
const lineLength = this.getNodeParameter('lineLength') as number;
|
|
const positionX = this.getNodeParameter('positionX') as number;
|
|
const positionY = this.getNodeParameter('positionY') as number;
|
|
const text = this.getNodeParameter('text') as string || '';
|
|
|
|
// Split the text in multiple lines
|
|
const lines: string[] = [];
|
|
let currentLine = '';
|
|
(text as string).split(' ').forEach((textPart: string) => {
|
|
if (currentLine.length + textPart.length + 1 > lineLength) {
|
|
lines.push(currentLine.trim());
|
|
currentLine = `${textPart} `;
|
|
return;
|
|
}
|
|
currentLine += `${textPart} `;
|
|
});
|
|
// Add the last line
|
|
lines.push(currentLine.trim());
|
|
|
|
// Combine the lines to a single string
|
|
const renderText = lines.join('\n');
|
|
|
|
gmInstance = gmInstance
|
|
.fill(fontColor)
|
|
.fontSize(fontSize)
|
|
.drawText(positionX, positionY, renderText);
|
|
} else {
|
|
throw new Error(`The operation "${operation}" is not supported!`);
|
|
}
|
|
|
|
const newItem: INodeExecutionData = {
|
|
json: item.json,
|
|
binary: {},
|
|
};
|
|
|
|
if (item.binary !== undefined) {
|
|
// Create a shallow copy of the binary data so that the old
|
|
// data references which do not get changed still stay behind
|
|
// but the incoming data does not get changed.
|
|
Object.assign(newItem.binary, item.binary);
|
|
}
|
|
|
|
if (options.quality !== undefined) {
|
|
gmInstance = gmInstance.quality(options.quality as number);
|
|
}
|
|
|
|
if (options.format !== undefined) {
|
|
gmInstance = gmInstance.setFormat(options.format as string);
|
|
newItem.binary![dataPropertyName as string].fileExtension = options.format as string;
|
|
newItem.binary![dataPropertyName as string].mimeType = `image/${options.format}`;
|
|
const fileName = newItem.binary![dataPropertyName as string].fileName;
|
|
if (fileName && fileName.includes('.')) {
|
|
newItem.binary![dataPropertyName as string].fileName = fileName.split('.').slice(0, -1).join('.') + '.' + options.format;
|
|
}
|
|
}
|
|
|
|
if (options.fileName !== undefined) {
|
|
newItem.binary![dataPropertyName as string].fileName = options.fileName as string;
|
|
}
|
|
|
|
return new Promise<INodeExecutionData>((resolve, reject) => {
|
|
gmInstance
|
|
.toBuffer((error: Error | null, buffer: Buffer) => {
|
|
if (error) {
|
|
return reject(error);
|
|
}
|
|
|
|
newItem.binary![dataPropertyName as string].data = buffer.toString(BINARY_ENCODING);
|
|
|
|
return resolve(newItem);
|
|
});
|
|
});
|
|
}
|
|
}
|