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⚡ Make it possible to create a new image

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This commit is contained in:
Jan Oberhauser 2020-11-19 10:48:46 +01:00
parent 130f944398
commit 06095ca0a7
1 changed files with 93 additions and 15 deletions
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108
packages/nodes-base/nodes/EditImage.node.ts
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@ -53,6 +53,11 @@ export class EditImage implements INodeType {
value: 'border',
description: 'Adds a border to the image',
},
{
name: 'Create',
value: 'create',
description: 'Create a new image',
},
{
name: 'Crop',
value: 'crop',
@ -107,6 +112,62 @@ export class EditImage implements INodeType {
},
// ----------------------------------
// create
// ----------------------------------
{
displayName: 'Background Color',
name: 'backgroundColor',
type: 'color',
default: '#ffffff00',
typeOptions: {
showAlpha: true,
},
displayOptions: {
show: {
operation: [
'create',
],
},
},
description: 'The background color of the image to create.',
},
{
displayName: 'Image Width',
name: 'width',
type: 'number',
default: 50,
typeOptions: {
minValue: 1,
},
displayOptions: {
show: {
operation: [
'create',
],
},
},
description: 'The width of the image to create.',
},
{
displayName: 'Image Height',
name: 'height',
type: 'number',
default: 50,
typeOptions: {
minValue: 1,
},
displayOptions: {
show: {
operation: [
'create',
],
},
},
description: 'The height of the image to create.',
},
// ----------------------------------
// draw
// ----------------------------------
@ -821,19 +882,29 @@ export class EditImage implements INodeType {
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;
let gmInstance: gm.State;
if (operation === 'create') {
const backgroundColor = this.getNodeParameter('backgroundColor') as string;
const width = this.getNodeParameter('width') as number;
const height = this.getNodeParameter('height') as number;
gmInstance = gm(width, height, backgroundColor);
if (!options.format) {
options.format = 'png';
}
} else {
if (item.binary === undefined) {
throw new Error('Item does not contain any binary data.');
}
if (item.binary[dataPropertyName as string] === undefined) {
throw new Error(`Item does not contain any binary data with the name "${dataPropertyName}".`);
}
gmInstance = gm(Buffer.from(item.binary![dataPropertyName as string].data, BINARY_ENCODING));
gmInstance = gmInstance.background('transparent');
}
if (item.binary[dataPropertyName as string] === undefined) {
return item;
}
let gmInstance = gm(Buffer.from(item.binary![dataPropertyName as string].data, BINARY_ENCODING));
gmInstance = gmInstance.background('transparent');
const cleanupFunctions: Array<() => void> = [];
if (operation === 'blur') {
@ -853,15 +924,15 @@ export class EditImage implements INodeType {
const geometryString = (positionX >= 0 ? '+' : '') + positionX + (positionY >= 0 ? '+' : '') + positionY;
if (item.binary[dataPropertyNameComposite as string] === undefined) {
throw new Error('');
if (item.binary![dataPropertyNameComposite as string] === undefined) {
throw new Error(`Item does not contain any binary data with the name "${dataPropertyNameComposite}".`);
}
const { fd, path, cleanup } = await file();
cleanupFunctions.push(cleanup);
fsWriteFileAsync(fd, Buffer.from(item.binary![dataPropertyNameComposite as string].data, BINARY_ENCODING));
gmInstance = gmInstance.compose(path).geometry(geometryString);
gmInstance = gmInstance.composite(path).geometry(geometryString);
} else if (operation === 'crop') {
const width = this.getNodeParameter('width') as number;
const height = this.getNodeParameter('height') as number;
@ -963,7 +1034,7 @@ export class EditImage implements INodeType {
.fill(fontColor)
.fontSize(fontSize)
.drawText(positionX, positionY, renderText);
} else {
} else if (operation !== 'create') {
throw new Error(`The operation "${operation}" is not supported!`);
}
@ -979,6 +1050,13 @@ export class EditImage implements INodeType {
Object.assign(newItem.binary, item.binary);
// Make a deep copy of the binary data we change
newItem.binary![dataPropertyName as string] = JSON.parse(JSON.stringify(newItem.binary![dataPropertyName as string]));
} else {
newItem.binary = {
[dataPropertyName as string]: {
data: '',
mimeType: '',
},
};
}
if (options.quality !== undefined) {