UniqR - Get your UNIque QR code

Yet another QR art library for Java, combines image with QR code.

Features

• This library is ^{_{super tiny}}. Less than 10KB for integration (see notes)
• 0 runtime dependency (see notes)
• Separated platform implementations for JavaSE and Android
• Apache License, can be used in commercial projects

Notes

• No QR encoder bundled for flexibility, you'll need to implement QrData classes with your favorite QR encoder
• You'll need to crop and adjust input image by yourself (especially for JavaSE implementation). For example, an image with aspect ratio other than 1:1 may be stretched.

Example (in Kotlin)

class QrCodeData(private val qrCode: QrCode) : QrData {

    override fun getSize() = qrCode.size

    override fun getVersion() = qrCode.version

    override fun get(x: Int, y: Int) = qrCode.getModule(x, y) == 1
}

val background = ImageIO.read(Main::class.java.getResource("the_man_who_changed_china.png"))
val qrSegments = QrSegment.makeSegments("苟利国家生死以，岂因祸福避趋之")
val qrCode = QrCode.encodeSegments(qrSegments, QrCode.Ecc.HIGH, 5, 40, -1, true)
val uniqR = UniqR(JavaSEPlatform(), background, QrCodeData(qrCode)).apply {
    qrPatternColor = 0xFFB9001E
}

// Call uniqR.build() for result 

Output

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