i am Stuck and i hope that someone here can help me :)
i am writeing a python code that creates a pdf with form fields using reportlab.
every thing is working as expected
but there is a issue. my multiline fields are not showing the text on multible lines when i press the field i can see all the text.
if i make a change to the field all the text remains and displays correctly
I really dont understand why? do any of you have a solution ? i have pasted some of my code below.
def insert_line_breaks(text, max_chars):
words = text.split()
processed_text = ""
current_line = ""
for word in words:
if len(current_line) + len(word) <= max_chars:
current_line += word + " "
else:
if current_line:
# Add the current line to the processed text with the correct newline character
processed_text += current_line.rstrip() + "\n"
current_line = word + " " # Start a new line with the current word
# Add the last line if it's not empty
if current_line:
processed_text += current_line
return processed_text
def create_pdf_with_form_fields_from_json(json_data_path):
try:
# Read and parse the JSON data
with open(json_data_path, 'r') as file:
form_fields = json.load(file)
# Function to draw images on the page
def draw_images(image_paths_list, start_height, page_width):
print("Drawing images...")
margin = 0.5 * inch
lower_pictures_by = 1.2 * inch
reduce_box_height_by = 0.48 * inch
box_size = (page_width - 3 * margin) / 2
box_height = box_size - reduce_box_height_by
x_start = margin
y_start = start_height - lower_pictures_by - box_height
gap_between_boxes = 0.25 * inch
for i, path in enumerate(image_paths_list):
if i >= 4: # Limit to 4 images
break
x_position = x_start + (i % 2) * (box_size + gap_between_boxes)
y_position = y_start - (i // 2) * (box_height + gap_between_boxes)
c.setStrokeColor(colors.lightgrey)
c.rect(x_position, y_position, box_size, box_height)
c.drawImage(path, x_position, y_position, width=box_size, height=box_height, preserveAspectRatio=True, mask='auto')
print("Images drawn.")
# Sanitize kunde_entry to remove special characters
kunde_name = re.sub(r'[^A-Za-z0-9 ]+', '', kunde_entry.get())
# Extracting Kundenummer and Leveringsadresse
kunde_info = kunde_entry.get().split(',')
if len(kunde_info) >= 2:
kundenummer = kunde_info[0].strip() # Kundenummer
kundenavn = kunde_info[1].strip() # Kundenavn
else:
messagebox.showerror("Error", "Invalid Kundenummer and name format.")
return
print("Starting PDF generation...")
leveringsadresse = leveringsadresse_entry.get().strip()
# Constructing the PDF file name
base_filename = f"{kundenummer}_{leveringsadresse}"
# Slice the filename to ensure it does not exceed 30 characters
sliced_filename = base_filename[:30] if len(base_filename) > 30 else base_filename
pdf_filename = f"F://1. NYT FÆLLES SCANPIPE//ScanPipe_Logistik//Leveringsbeskrivelser//{sliced_filename}.pdf"
# Set up the canvas
c = canvas.Canvas(pdf_filename, pagesize=letter)
page_width, page_height = letter
# Process text with automatic line breaks
max_line_length = 80 # Adjust this number based on your PDF layout
leveringsbeskrivelse = insert_line_breaks(leveringsbeskrivelse_entry.get("1.0", "end-1c"), max_line_length)
srv_leveringsbeskrivelse = insert_line_breaks(srv_leveringsbeskrivelse_entry.get("1.0", "end-1c"), max_line_length)
alarm = insert_line_breaks(alarm_entry.get("1.0", "end-1c"), max_line_length)
print("Generating PDF for:", kundenummer, kundenavn)
# Initialize the current page
current_page = 1
formfieldsheigth = 600
draw_images(image_paths, formfieldsheigth, page_width)
# Add form fields and text boxes based on JSON data
for field in form_fields:
field_name = field.get('title', 'Untitled') # Default to 'Untitled' if title is not present
field_content = field.get('content', '') # Default to empty string if content is not present
x, y, width, height = field['x0'], field['y0'], field['width'], field['height']
subtype = field.get('Subtype', 'Formfield') # Default to 'Formfield' if Subtype is not present
field_page = field.get('page')
if field_name in ["Kundenavn og nummer", "Kundenavn og nummer_SVR"]:
field_content = kunde_name
elif field_name in ["By", "By_SVR"]:
field_content = by_entry.get()
elif field_name in ["Leveringsadresse", "Leveringsadresse_SVR"]:
field_content = leveringsadresse
elif field_name in ["Postnummer", "Postnummer_SVR"]:
field_content = postnr_entry.get()
elif field_name in ["Kontaktperson", "Kontaktperson_SVR"]:
field_content = kontaktperson_entry.get()
elif field_name in ["Tlf", "Tlf_SVR"]:
field_content = telefon_entry.get()
elif field_name in ["Alarm", "Alarm_SVR"]:
field_content = alarm
elif field_name == "Leveringsbeskrivelse":
field_content = leveringsbeskrivelse
elif field_name == "Leveringsbeskrivelse_SVR":
field_content = srv_leveringsbeskrivelse
# Check if the field's page is different from the current page
if field_page != current_page:
# Add a new page and update current_page
c.showPage()
current_page = field['page']
if subtype == 'Formfield':
# Create a form field
c.acroForm.textfield(name=field_name, tooltip=field_name,
x=x, y=y, width=width, height=height,
borderColor=colors.black, fillColor=colors.white,
textColor=colors.black, forceBorder=True, maxlen=500,
fieldFlags='multiline', value=field_content)
elif subtype == 'Textbox':
# Set the fill color to pale yellow and the stroke color to black
c.setFillColor(colors.cornflower)
c.setStrokeColor(colors.black)
# Draw a rectangle with a black border and filled with pale yellow
c.rect(x, y, width, height, stroke=1, fill=1)
# Set the text color to black
c.setFillColorRGB(0, 0, 0)
# Draw the text inside the box
c.drawString(x + 2, y + height / 2, field_content) # Adjusted x to account for the border
draw_images(srv_image_paths, formfieldsheigth, page_width)
# Finalize PDF
c.save()
print("PDF generated successfully:", pdf_filename)
except Exception as e:
print("An error occurred while generating the PDF:", e)
i have tried to write a script that open the pdf after creation and then make a change to the field (add a .). but that dident work...
Edit!!
i found a solution. if i open the pdf after i have saved it using pdfrw and useing this code:
def update_pdf_need_appearances_flag(pdf_path):
try:
pdf = pdfrw.PdfReader(pdf_path)
if "/AcroForm" in pdf.Root:
pdf.Root.AcroForm.update(pdfrw.PdfDict(NeedAppearances=pdfrw.PdfObject('true')))
else:
print("No AcroForm found in PDF. This PDF might not contain form fields.")
pdfrw.PdfWriter().write(pdf_path, pdf)
print("Updated NeedAppearances flag in PDF:", pdf_path)
except Exception as e:
print("An error occurred while updating the PDF:", e)
The fields are updated and display the text correctly
i found a solution. if i open the pdf after i have saved it using pdfrw and useing this code:
The fields are updated and display the text correctly