ComfyUI Node: Chatbox Overlay

Chatbox Overlay:

The Chatbox Overlay node is designed to enhance your images by overlaying text in a customizable chatbox format. This node allows you to add text to images with precision, offering control over text alignment, font size, color, and positioning. It is particularly useful for creating visually appealing text overlays that can be used in various creative projects, such as digital art, social media graphics, or presentations. By adjusting parameters like text box dimensions and line spacing, you can ensure that the text fits perfectly within the designated area, maintaining readability and aesthetic appeal. The node's primary function is to draw text onto an image, converting it into a tensor format suitable for further processing or display.

Chatbox Overlay Input Parameters:

image

This parameter represents the input image onto which the text will be overlaid. It is expected to be in a tensor format, which allows for efficient processing and manipulation within the node.

text

This parameter is the string of text you wish to overlay on the image. It supports multiline input, allowing you to add paragraphs or multiple lines of text. The default text is "Hello".

textbox_width

This integer parameter defines the width of the text box in which the text will be wrapped. It ensures that the text does not exceed the specified width, maintaining a neat and organized appearance. The default value is 200, with a minimum of 1.

textbox_height

This integer parameter specifies the height of the text box. It determines how much vertical space is available for the text, ensuring that the text fits within the designated area. The default value is 100, with a minimum of 1.

max_font_size

This integer parameter sets the maximum font size for the text. The node will attempt to use this font size unless the text does not fit within the specified dimensions, in which case it will decrease the font size until it fits. The default and maximum value is 256, with a minimum of 1.

font

This string parameter specifies the path to the font file used for rendering the text. By default, it uses the DejaVuSans-Bold.ttf font located in the system's truetype directory.

alignment

This parameter determines the alignment of the text within the text box. It offers three options: "left", "right", and "center", with "center" being the default. This allows you to control the horizontal positioning of the text.

color

This string parameter defines the color of the text in hexadecimal format. The default color is black ("#000000"), but you can specify any color to match your design needs.

start_x

This integer parameter sets the starting x-coordinate for the text box on the image. It allows you to position the text box horizontally on the image, with a default value of 0.

start_y

This integer parameter sets the starting y-coordinate for the text box on the image. It allows you to position the text box vertically on the image, with a default value of 0.

line_spacing

This float parameter controls the spacing between lines of text. It ensures that the text is readable and aesthetically pleasing, with a default value of 1.5. The minimum value is 1.0, and the maximum is 2.0, adjustable in increments of 0.1.

Chatbox Overlay Output Parameters:

IMAGE

The output is an image tensor with the text overlay applied. This tensor can be used for further processing or directly displayed, providing a seamless integration of text into your visual projects. The output maintains the original image's quality while incorporating the specified text enhancements.

Chatbox Overlay Usage Tips:

• Ensure that the textbox_width and textbox_height are set appropriately to accommodate the text you wish to overlay, preventing text from being cut off or improperly formatted.
• Experiment with different alignment settings to achieve the desired text positioning, especially when working with images that have specific focal points or design elements.
• Use the line_spacing parameter to adjust the readability of multiline text, particularly when using larger font sizes or longer text blocks.

Chatbox Overlay Common Errors and Solutions:

Font file not found

• Explanation: The specified font file path is incorrect or the file does not exist.
• Solution: Verify the font file path and ensure the file is accessible at the specified location.

Text exceeds textbox dimensions

• Explanation: The text does not fit within the specified textbox dimensions, even after reducing the font size.
• Solution: Increase the textbox_width and/or textbox_height parameters to provide more space for the text.

Invalid color format

• Explanation: The color parameter is not in a valid hexadecimal format.
• Solution: Ensure the color is specified as a valid hex code, such as "#FFFFFF" for white.