Print an image directly on windows and fill out the page, without borders, if supported.

print.py

import win32ui, win32con
from PIL import Image, ImageWin
import win32print


def get_printer_by_name(printer_name):
    """Get a printer by its name. Returns None if printer not found."""
    try:
        # Open the printer
        hprinter = win32print.OpenPrinter(printer_name)
        # Get printer info
        printer_info = win32print.GetPrinter(hprinter, 2)
        # Close the printer
        win32print.ClosePrinter(hprinter)
        return printer_info
    except Exception as e:
        print(f"Error getting printer '{printer_name}': {str(e)}")
        return None

def list_available_printers():
    """List all available printers."""
    printers = win32print.EnumPrinters(win32print.PRINTER_ENUM_LOCAL | win32print.PRINTER_ENUM_CONNECTIONS)
    return [printer[2] for printer in printers]  # printer[2] contains the printer name

def print_test(printer_name):

    try:
        filename = "F:\\Landscape\\Südtirol 21. August 2016 - 045.jpg"
        img = Image.open(filename, 'r')
    except:
        print("error")
        return

    # Open printer and get printer info
    hprinter = win32print.OpenPrinter(printer_name)
    printer_info = win32print.GetPrinter(hprinter, 2)
    win32print.ClosePrinter(hprinter)

    # Create DC and set up printer
    hdc = win32ui.CreateDC()
    hdc.CreatePrinterDC(printer_name)

    # Enable borderless printing by setting margins to 0
    hdc.SetMapMode(win32con.MM_ISOTROPIC)
    hdc.SetViewportExt((hdc.GetDeviceCaps(win32con.HORZRES), hdc.GetDeviceCaps(win32con.VERTRES)))
    hdc.SetWindowExt((hdc.GetDeviceCaps(win32con.HORZRES), hdc.GetDeviceCaps(win32con.VERTRES)))
    hdc.SetWindowOrg((0, 0))  # Set origin to (0,0) for borderless printing

    horzres = hdc.GetDeviceCaps(win32con.HORZRES)
    vertres = hdc.GetDeviceCaps(win32con.VERTRES)

    landscape = horzres > vertres

    if landscape:
        if img.size[1] > img.size[0]:
            print('Landscape mode, tall image, rotate bitmap.')
            img = img.rotate(90, expand=True)
    else:
        if img.size[1] < img.size[0]:
            print('Portrait mode, wide image, rotate bitmap.')
            img = img.rotate(90, expand=True)

    img_width = img.size[0]
    img_height = img.size[1]

    if landscape:
        #we want image width to match page width
        ratio = vertres / horzres
        max_width = img_width
        max_height = (int)(img_width * ratio)
    else:
        #we want image height to match page height
        ratio = horzres / vertres
        max_height = img_height
        max_width = (int)(max_height * ratio)

    # Calculate scaling to fit the page while maintaining aspect ratio
    scale_x = horzres / img_width
    scale_y = vertres / img_height
    scale = min(scale_x, scale_y)
    new_width = int(img_width * scale)
    new_height = int(img_height * scale)

    # Center the image on the page
    x = (horzres - new_width) // 2
    y = (vertres - new_height) // 2

    hdc.StartDoc('Result')
    hdc.StartPage()

    dib = ImageWin.Dib(img)
    dib.draw(hdc.GetHandleOutput(), (x, y, x + new_width, y + new_height))

    hdc.EndPage()
    hdc.EndDoc()
    hdc.DeleteDC()

    print( 'Debug info:' )
    print( 'Landscape: %d' % landscape )
    print( 'horzres: %d' % horzres )
    print( 'vertres: %d' % vertres )
    print( 'img_width: %d' % img_width )
    print( 'img_height: %d' % img_height )
    print( 'new_width: %d' % new_width )
    print( 'new_height: %d' % new_height )
    print( 'x: %d' % x )
    print( 'y: %d' % y )


if __name__ == "__main__":
    # List all available printers
    available_printers = list_available_printers()
    print("Available printers:")
    for printer in available_printers:
        print(f"  - {printer}")
    
    # Get default printer
    default_printer = win32print.GetDefaultPrinter()
    print(f"\nDefault printer: {default_printer}")
    
    # Example of getting a specific printer by name
    # You can replace "Microsoft Print to PDF" with any printer name from the list above
    specific_printer = "Canon SELPHY CP1500"
    printer_info = get_printer_by_name(specific_printer)
    if printer_info:
        print(f"\nSuccessfully found printer: {specific_printer}")
        print_test(specific_printer)
    else:
        print(f"\nCould not find printer: {specific_printer}")
        # Fall back to default printer
        print(f"Using default printer instead: {default_printer}")
        print_test(default_printer)