Thermer Integration Guide
Introduction
The Thermer app allows you to print text, images, barcodes, and QR codes by sending a request from your Swift application. This guide explains how to use the provided Swift code to structure and pass data to the BluetoothPrint app.
Print Entry Types Text Entry:
Type: 0
Content: Any string
Bold: 0 if no, 1 if yes
Align: 0 if left, 1 if center, 2 if right
Format: 0 if normal, 1 if double Height, 2 if double Height + Width, 3 if double Width, 4 if small
Image Entry:
Type: 1
Path: Complete filepath on your web server; ensure it is not a large size
Align: 0 if left, 1 if center, 2 if right; set left align for big size images
Barcode Entry:
Type: 2
Value: Valid barcode value
Height: Valid barcode height (10 to 80)
Align: 0 if left, 1 if center, 2 if right
QR Entry:
Type: 3
Value: Valid QR code value
Size: Valid QR code size in mm (Min 40)
Align: 0 if left, 1 if center, 2 if right
Empty Line:
Type: 0
Content: " " (empty line)
Bold: 0
Align: 0
Multi-lines Text:
Type: 0
Content: 'This text has
two lines' (multiple lines text)
Bold: 0
Align: 0
Integration Steps
Set up your Xcode project:
Copy the provided Swift code into your Xcode project.
Create Print Entries:
Use the PrintEntry struct to create print entries with different types. Assign values to the properties based on the type of entry. Encode and Open URL:
Use the JSONEncoder to encode the print entries into JSON format. Add percent encoding to the JSON string. Construct a URL with the encoded JSON string and the custom scheme (e.g., "thermer://"). Open the URL using UIApplication.shared.open(url!).
Note
Ensure that the sequence of entries matches the desired printing content. For non-English entries, the app will automatically convert them to text special if the corresponding setting is enabled in the app under Settings -> Special Characters.