31 lines
1.2 KiB
Kotlin
31 lines
1.2 KiB
Kotlin
package org.thoughtcrime.securesms.util
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import android.graphics.Bitmap
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import android.graphics.Color
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import com.google.zxing.BarcodeFormat
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import com.google.zxing.EncodeHintType
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import com.google.zxing.WriterException
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import com.google.zxing.qrcode.QRCodeWriter
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object QRCodeUtilities {
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fun encode(data: String, size: Int, isInverted: Boolean = false, hasTransparentBackground: Boolean = true): Bitmap {
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try {
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val hints = hashMapOf( EncodeHintType.MARGIN to 1 )
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val result = QRCodeWriter().encode(data, BarcodeFormat.QR_CODE, size, size, hints)
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val bitmap = Bitmap.createBitmap(result.width, result.height, Bitmap.Config.ARGB_8888)
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for (y in 0 until result.height) {
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for (x in 0 until result.width) {
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if (result.get(x, y)) {
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bitmap.setPixel(x, y, if (isInverted) Color.WHITE else Color.BLACK)
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} else if (!hasTransparentBackground) {
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bitmap.setPixel(x, y, if (isInverted) Color.BLACK else Color.WHITE)
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}
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}
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}
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return bitmap
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} catch (e: WriterException) {
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return Bitmap.createBitmap(512, 512, Bitmap.Config.ARGB_8888)
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}
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}
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} |