71 lines
1.7 KiB
JavaScript
71 lines
1.7 KiB
JavaScript
import fs from 'mz/fs';
|
|
import lwip from 'lwip';
|
|
import debugname from 'debug';
|
|
const debug = debugname('hostr-api:resize');
|
|
|
|
function cover(path, type, size) {
|
|
return new Promise((resolve, reject) => {
|
|
lwip.open(path, type, (errIn, image) => {
|
|
debug('Image Opened');
|
|
if (errIn) {
|
|
reject(errIn);
|
|
}
|
|
|
|
image.cover(size.width, size.height, (errOut, resized) => {
|
|
debug('Image Resized');
|
|
if (errOut) {
|
|
reject(errOut);
|
|
}
|
|
|
|
resized.toBuffer(type, (errBuf, buffer) => {
|
|
debug('Image Buffered');
|
|
if (errBuf) {
|
|
reject(errBuf);
|
|
}
|
|
resolve(buffer);
|
|
});
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
function scale(path, type, size) {
|
|
return new Promise((resolve, reject) => {
|
|
lwip.open(path, type, (errIn, image) => {
|
|
debug('Image Opened');
|
|
if (errIn) {
|
|
reject(errIn);
|
|
}
|
|
|
|
image.cover(size.width, size.height, (errOut, resized) => {
|
|
debug('Image Resized');
|
|
if (errOut) {
|
|
reject(errOut);
|
|
}
|
|
|
|
resized.toBuffer(type, (errBuf, buffer) => {
|
|
debug('Image Buffered');
|
|
if (errBuf) {
|
|
reject(errBuf);
|
|
}
|
|
resolve(buffer);
|
|
});
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
export default function resize(path, type, currentSize, newSize) {
|
|
debug('Resizing');
|
|
const ratio = 970 / currentSize.width;
|
|
if (newSize.width <= 150) {
|
|
debug('Cover');
|
|
return cover(path, type, newSize);
|
|
} else if (newSize.width > 970 && ratio > 1) {
|
|
debug('Scale');
|
|
newSize.height = currentSize.height * ratio;
|
|
return scale(path, type, newSize);
|
|
}
|
|
debug('Copy');
|
|
return fs.readFile(path);
|
|
}
|