Draw text on a background image

[Hugo-Qc]

Body

I want to overlay 3 pieces of content consecutively and center them on a background image. Each piece of content has a different style and font. I’m not sure how to implement this. Could someone help me, please? Thank you!

def wrap_text(text, font, max_width, draw):
words = text.split()
lines = []
current_line = words[0]
for word in words[1:]:
test_line = current_line + ' ' + word
bbox = draw.textbbox((0, 0), test_line, font=font)
text_width = bbox[2] - bbox[0]
if text_width > max_width:
lines.append(current_line)
current_line = word
else:
current_line = test_line
lines.append(current_line)
return lines

def draw_text(draw, text, position, font, color, max_width, line_spacing, alignment):
lines = wrap_text(text, font, max_width, draw)
x, y = position
line_height = font.getbbox('A')[3]

for line in lines:
    # Calculate the bounding box for the current line
    bbox = draw.textbbox((0, 0), line, font=font)
    text_width = bbox[2] - bbox[0]
    
    # Adjust x based on alignment
    if alignment == 'right':
        draw.text((x - text_width, y), line, font=font, fill=color)
    elif alignment == 'center':
        draw.text(((x - text_width)/ 2, y), line, font=font, fill=color)
    else: 
        draw.text((x, y), line, font=font, fill=color)
    
    # Move y down to the next line
    y += line_height + line_spacing

return y  

Guidelines

• I have read and understood this category's guidelines before making this post.

[jgschmitz]

Here's how you can implement overlaying three pieces of content consecutively and centering them on a background image, using your wrap_text and draw_text functions. I’ll include the logic for overlaying the content and ensure everything is aligned properly.

from PIL import Image, ImageDraw, ImageFont

def wrap_text(text, font, max_width, draw):
    words = text.split()
    lines = []
    current_line = words[0]
    for word in words[1:]:
        test_line = current_line + ' ' + word
        bbox = draw.textbbox((0, 0), test_line, font=font)
        text_width = bbox[2] - bbox[0]
        if text_width > max_width:
            lines.append(current_line)
            current_line = word
        else:
            current_line = test_line
    lines.append(current_line)
    return lines

def draw_text(draw, text, position, font, color, max_width, line_spacing, alignment):
    lines = wrap_text(text, font, max_width, draw)
    x, y = position
    line_height = font.getbbox('A')[3]

    for line in lines:
        # Calculate the bounding box for the current line
        bbox = draw.textbbox((0, 0), line, font=font)
        text_width = bbox[2] - bbox[0]
        
        # Adjust x based on alignment
        if alignment == 'right':
            draw.text((x - text_width, y), line, font=font, fill=color)
        elif alignment == 'center':
            draw.text(((x - text_width) / 2, y), line, font=font, fill=color)
        else:
            draw.text((x, y), line, font=font, fill=color)
        
        # Move y down to the next line
        y += line_height + line_spacing

    return y

# Main function to overlay text on a background image
def overlay_text_on_image(background_path, output_path, content_list):
    # Open the background image
    image = Image.open(background_path)
    draw = ImageDraw.Draw(image)
    image_width, image_height = image.size

    # Iterate through the content pieces
    y_position = image_height // 4  # Start at 1/4th of the image height
    for content in content_list:
        text = content['text']
        font = ImageFont.truetype(content['font'], content['font_size'])
        color = content['color']
        max_width = image_width - 40  # Allow some padding
        line_spacing = content['line_spacing']
        alignment = content['alignment']

        # Draw the text and update y_position
        y_position = draw_text(draw, text, (image_width // 2, y_position), font, color, max_width, line_spacing, alignment)

        # Add extra space between blocks
        y_position += 40

    # Save the resulting image
    image.save(output_path)
    print(f"Image saved at {output_path}")

# Example usage
content_list = [
    {
        'text': "First piece of content with a bold font.",
        'font': 'arialbd.ttf',  # Replace with a bold font file path
        'font_size': 40,
        'color': 'red',
        'line_spacing': 10,
        'alignment': 'center',
    },
    {
        'text': "Second piece of content with a script font.",
        'font': 'ariali.ttf',  # Replace with an italic font file path
        'font_size': 30,
        'color': 'blue',
        'line_spacing': 15,
        'alignment': 'center',
    },
    {
        'text': "Third piece of content with a modern font.",
        'font': 'arial.ttf',  # Replace with a regular font file path
        'font_size': 25,
        'color': 'green',
        'line_spacing': 8,
        'alignment': 'center',
    },
]

# Call the function
overlay_text_on_image('background.jpg', 'output.jpg', content_list)

Each piece of content is defined with its own text, font, size, color, spacing, and alignment.

Dynamic Text Placement:
The draw_text function handles wrapping and alignment for each piece of content. It ensures that the text fits within the specified width (max_width).
Vertical Placement:

The y_position starts at 1/4th of the image height and updates after each piece of content, ensuring spacing between blocks.
Custom Fonts:
Use .ttf font files for each content style. Replace placeholders like arialbd.ttf with the actual font paths on your system.

Background Image:
The background image is opened, and the text is overlaid on top of it.
Output:

The resulting image is saved to output.jpg.

[Hugo-Qc]

Thank you very much