Google apps script getAs('application/pdf'

问题:

I am generating a PDF file from a spreadsheet using an app script I found here. This one uses the good old Method getAs('application/pdf') and works great.

The problem is that the PDF document generated in this way has unwanted asymmetric margins (larger on the right, narrow on the left). I just wanted the page to be centered. The weird thing is that when I print from the Google menu File -> Print (or Ctrl + P) the document appears centered correctly.

My code looks like this:

function CreaPDF() {
  //The function prints an invoice to PDF. First it copies spreadsheet to a new document.
  //Deletes all sheet except the one to print. Saves it to PDF. 
  //It overwrites any existing doc with same name.

  var sourceSpreadsheet = SpreadsheetApp.getActive();          
  var sheetName = "Factura";
  var folderID = getParentFolder(); // Folder id to save in a folder.
  var sourceSheet = sourceSpreadsheet.getSheetByName(sheetName);
  var folder = DriveApp.getFolderById(folderID); 
  var numf = sourceSpreadsheet.getRangeByName("NumeroFactura").getValue();
  var anof = numf.split("/",2);   // Seeks number and year -> filename 

  var pdfName = anof[1] +"_Factura_" + anof[0]+ "_Dra_Salazar"; // Nombre del documento;

  //Copy whole spreadsheet 2 temporary sheet
  var destSpreadsheet = SpreadsheetApp.open(DriveApp.getFileById(sourceSpreadsheet.getId()).makeCopy("tmp_convert_to_pdf", folder))

  //delete redundant sheets
  var sheets = destSpreadsheet.getSheets();
  for (i = 0; i < sheets.length; i++) {
    if (sheets[i].getSheetName() != sheetName){
    destSpreadsheet.deleteSheet(sheets[i]);
    }
  }

  //Deletes pdf if already exists
  var files = DriveApp.getFilesByName(pdfName);
  while (files.hasNext()) {
   files.next().setTrashed(true);
   }
  var destSheet = destSpreadsheet.getSheets()[0];
  //repace cell values with text (to avoid broken references)
  var sourceRange = sourceSheet.getRange(1, 1,sourceSheet.getMaxRows(),sourceSheet.getMaxColumns());

  var sourcevalues = sourceRange.getDisplayValues();
  var destRange = destSheet.getRange(1, 1, destSheet.getMaxRows(), destSheet.getMaxColumns());
  destRange.setValues(sourcevalues);

  SpreadsheetApp.getActiveSpreadsheet().toast('Creando PDF');

  //save to pdf
  var theBlob = destSpreadsheet.getBlob().getAs('application/pdf').setName(pdfName);
  var newFile = folder.createFile(theBlob);

  //Delete the temporary sheet
  DriveApp.getFileById(destSpreadsheet.getId()).setTrashed(true);
  return true;
}

My settings when I print are:

• Paper size: "A4"
• Scale: "Normal" (I also tried: "fit to width" and "fit on page")
• Orientation: "Portrait"
• Margins: "Normal"

As seen in the Google Help Forums it seems like an old issue with the way google prints. In summary, it seems that print settings are not saved and there is no way to pass any parameter to the getAs('application/pdf') method either. So i assume that the method (and menu print options) use default parameters that can not be modified. Any solution for this? The "Print or change page setup" help page does not help too much.

Thank you very much

回答1:

Try this solution based on https://ctrlq.org/code/19869-email-google-spreadsheets-pdf

Using export url parameters you can set needed options for result pdf. Also you can set specific id of sheet to export, so you don't need to make duplicate of your whole spreadsheet anymore.

function CreaPDF() {
  //The function prints an invoice to PDF. First it copies spreadsheet to a new document.
  //Deletes all sheet except the one to print. Saves it to PDF. 
  //It overwrites any existing doc with same name.

  var sourceSpreadsheet = SpreadsheetApp.getActive();          
  var sheetName = "Factura";
  var folderID = getParentFolder(); // Folder id to save in a folder.
  var sourceSheet = sourceSpreadsheet.getSheetByName(sheetName);
  var folder = DriveApp.getFolderById(folderID); 
  var numf = sourceSpreadsheet.getRangeByName("NumeroFactura").getValue();
  var anof = numf.split("/",2);   // Seeks number and year -> filename 

  var pdfName = anof[1] +"_Factura_" + anof[0]+ "_Dra_Salazar"; // Nombre del documento;

  SpreadsheetApp.getActiveSpreadsheet().toast('Creando PDF');

  // export url
  var url = 'https://docs.google.com/spreadsheets/d/'+sourceSpreadsheet.getId()+'/export?exportFormat=pdf&format=pdf' // export as pdf / csv / xls / xlsx
  + '&size=A4'                           // paper size legal / letter / A4
  + '&portrait=true'                     // orientation, false for landscape
  + '&fitw=false'                        // fit to page width, false for actual size
  + '&sheetnames=false&printtitle=false' // hide optional headers and footers
  + '&pagenumbers=false&gridlines=false' // hide page numbers and gridlines
  + '&fzr=false'                         // do not repeat row headers (frozen rows) on each page
  + '&gid='+sourceSheet.getSheetId();    // the sheet's Id

  var token = ScriptApp.getOAuthToken();

  // request export url
  var response = UrlFetchApp.fetch(url, {
    headers: {
      'Authorization': 'Bearer ' +  token
    }
  });

  var theBlob = response.getBlob().setName(pdfName+'.pdf');

  // delete pdf if already exists
  var files = folder.getFilesByName(pdfName);
  while (files.hasNext())
  {
    files.next().setTrashed(true);
  }

  // create pdf
  var newFile = folder.createFile(theBlob);

  return true;
}

回答2:

Before solution provided by Kos I had finally managed to adjust my sheet to the size of the paper by playing with the size of the cells, making it appear "centered". But anyway many thanks to Kos. Your answer definitely solves the problem. Great!