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https://github.com/Nawias/bar128-love
Barcode rendering library for LÖVE
https://github.com/Nawias/bar128-love
barcode-generator code128 love2d love2d-library
Last synced: about 1 month ago
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Barcode rendering library for LÖVE
- Host: GitHub
- URL: https://github.com/Nawias/bar128-love
- Owner: Nawias
- Created: 2024-04-29T15:59:44.000Z (8 months ago)
- Default Branch: master
- Last Pushed: 2024-04-30T19:07:51.000Z (8 months ago)
- Last Synced: 2024-10-16T12:13:01.427Z (about 2 months ago)
- Topics: barcode-generator, code128, love2d, love2d-library
- Language: Lua
- Homepage: https://github.com/Nawias/bar128-love
- Size: 15.6 KB
- Stars: 1
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
- awesome-love2d - bar128-love - Barcode rendering library for LÖVE. (Utilities)
README
# bar128-love
**Barcode rendering library for LÖVE**, based on Zanstra's JS implementation ([code128.js](https://zanstra.com/my/Barcode/code128.js)).
## Installation
You can simply download the `bar128.lua` file from the [GitHub repository](https://github.com/Nawias/bar128-love) and include it in your LÖVE project.
## Usage
Here's an example of how to use the library in a LÖVE program:
```lua
local Barcode = require("bar128")
function love.load()
-- Create a new Barcode object with the code "12345"
barcode = Barcode("12345")
end
function love.draw()
-- Draw the barcode at position (100, 100)
barcode:draw('notext', 100, 100)
end
```
This example will render a barcode with the code "12345" at position (100, 100).
## Public Methods
### Constructor
#### `Barcode(code: string|number, barHeight: number, barWidth: number, barcodeType: 'A'|'B'|'C'): Barcode`
Creates a new Barcode object with the specified parameters:
- `code`: The text to be encoded in the barcode.
- `barHeight`: The height of the barcode image in pixels (default: 20).
- `barWidth`: The width of one bar in pixels (default: 1).
- `barcodeType`: The code 128 character set to use (`'A'`, `'B'` or `'C'`). If not provided, the library will detect the charset automatically.
### Drawing
#### `draw(text: 'notext'|'text', x: number, y: number)`
Draws the barcode on the screen.
- `text`: ~~Indicates whether the text representation should be drawn underneath the barcode.~~ Coming Soon™.
- `x`: The X coordinate of the top-left corner of the barcode.
- `y`: The Y coordinate of the top-left corner of the barcode.
> ℹ️ Note that the X/Y position accounts for the initial 'quiet zone' of the barcode.
### Getters and Setters
#### `getCode(): string|number`
Returns the current barcode value.
#### `setCode(code: string|number, barcodeType: 'A'|'B'|'C')`
Changes the barcode's value.
- `code`: The new barcode value.
- `barcodeType`: (Optional) The code 128 character set to use (`'A'`, `'B'` or `'C'`). If not provided, the library will detect the charset automatically.
> ⚠️ Warning: changing the value causes the barcode to be re-parsed internally. Don't use this too often.
#### `getBarWidth(): number`
Returns the current bar width.
#### `setBarWidth(width: number)`
Changes the base width of bars.
- `width`: The new bar width in pixels.
#### `getBarHeight(): number`
Returns the current barcode height.
#### `setBarHeight(height: number)`
Changes the barcode's height.
- `height`: The new barcode height in pixels.
#### `getFullWidth(): number`
Returns total width of the barcode.
#### `getFullSize(): number, number`
Returns total size of the barcode.
> ⚠️ Warning: the result of `getFullWidth` gets cached, so the first invocation after `setCode` or `setBarWidth` will take slightly longer. `getFullSize` also uses `getFullWidth` under the hood.
## License
This library is licensed under the MIT License. See the [bar128.lua](https://github.com/Nawias/bar128-love/blob/master/bar128.lua) file for details.