Resizing image in Google Apps Script

Question

I have an image and I want to resize this.

App Script code:

Click to copy

var fileId = 'idImage';
var img = DriveApp.getFileById(fileId).getBlob().;
newFile.getBody().insertImage(0, img); 

Object Blob can't resize so how can I resize my image?

Regards

Answer 1

I've tried the solution you gave, but no success, I always get a bizarre image ratio. I've found a working solution in this frightening post (I am a newbie):

Quite exact code :

Click to copy

var inlineI = GDoc.appendImage(img);
var width = inlineI.getWidth();
var newW = width;
var height = inlineI.getHeight();
var newH = height;
var ratio = width/height

if(width>640){
newW = 640;
newH = parseInt(newW/ratio);
}
inlineI.setWidth(newW).setHeight(newH)

The thing to do is to insert the image as blob (as usual), and THEN get its dimensions, within the doc to calculate the ratio, and FINALLY set its dimensions. Hope it helps !

btw, thanks @serge-insas !

EDIT : this is an updated version of the above code, to also fix the height of the picture. There might be some weird stuff for specialists, but as said, I'm a noob !

Click to copy

if(insertImage == true){
  var cellImage = ligne.appendTableCell().insertImage(0, image);
  //get the dimensions of the image AFTER having inserted it to fix
  //its dimensions afterwards
  var originW =  cellImage.getWidth();
  var originH = cellImage.getHeight();
  var newW = originW;
  var newH = originH;
  var ratio = originW/originH

  if(originW>maxWidth){
    newW = maxWidth;
    newH = parseInt(newW/ratio);
  }
  cellImage.setWidth(newW).setHeight(newH).setAttributes(styleImage);
  var newWW = cellImage.getWidth();
  var newHH = cellImage.getHeight();
  var newRatio = newHH/newWW;
  Logger.log("image width = "+newWW);
  Logger.log("image height = "+newHH);

  if(newHH>maxWidth){
    newHH = maxHeight;
    newWW = parseInt(newHH/newRatio);
  }
  cellImage.setWidth(newWW).setHeight(newHH);
  cellImage.getParent().setAttributes(styleImage);