Thermal-Printer-in-Android
Thermal-Printer-in-Android copied to clipboard
imrankst1221
Max Width and Height
Hello @imrankst1221 , how can I modify the max width and height for image printing, in Utils.decodeBitmap?
if (widthHexString.length() > 2) { Log.e("decodeBitmap error", " width is too large"); return null;
if (heightHexString.length() > 2) { Log.e("decodeBitmap error", " height is too large"); return null;
hey sir do you found the answer? because i am stuck in this code for 1 week if you found the answer i hope you share to me thanks
Hello, yes What I have to did was divide the image in two images of height no larguer than de allowed then iterate the print process by each part of the image.
i found the answers wait i will check my project
Pada tanggal 23 Apr 2018 12.29 AM, "adelemam" [email protected] menulis:
hi , did any one solved this issue , as i am stuck into it too
— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/imrankst1221/Thermal-Printer-in-Android/issues/5#issuecomment-383398077, or mute the thread https://github.com/notifications/unsubscribe-auth/AhsGG_kVoX2vDghciUsTn1-lMCeqqSyzks5trL3ygaJpZM4Oqmbs .
You can try the code later: `private fun splitImage(bitmap: Bitmap, rows: Int, cols: Int) { try { // For height and width of the small image chunks. val chunkHeight = bitmap.height / rows val chunkWidth = bitmap.width / cols
// Getting the scaled bitmap of the source image.
val scaledBitmap = Bitmap.createScaledBitmap(bitmap, bitmap.width, bitmap.height, true)
// xCoord and yCoord are the pixel positions of the image chunks.
var yCoord = 0
for (x in 0 until rows) {
var xCoord = 0
for (y in 0 until cols) {
val bmp = Bitmap.createBitmap(scaledBitmap, xCoord, yCoord, chunkWidth, chunkHeight)
if (bmp != null) {
val command = EscPosUtils.decodeBitmap(bmp)
outputStream.write(EscPosCommands.ESC_ALIGN_CENTER)
printText(command, false)
} else {
Timber.e("Print Photo error - The file isn't exists")
}
xCoord += chunkWidth
}
yCoord += chunkHeight
}
} catch (e: Exception) {
e.printStackTrace()
}
}`
Hi @chukimmuoi how can i define the right rows and cols? And what is unit of measure for that? Can you help me to describe it? Please help
@jaydeep43 @BayuWijayaPermanaPutra Sorry, cols = 1 and row = bmpScale.height / 32 + 1. This is full code, no need to care typePrint:
private fun printText(msg: ByteArray, isNewLine: Boolean = true) {
outputStream?.let {
try {
it.write(msg) // Print normal text.
} catch (e: IOException) {
e.printStackTrace()
}
}
}```
```// Print bill.
private fun printWebView(bmpScale: Bitmap, typePrint: Int) {
try {
val isPrintCook = typePrint == QueueDataPrint.VALUE_PRINT_COOK
val isOpenCashBox = typePrint == QueueDataPrint.VALUE_PRINT_CASHIER
fun innerHandler(rows: Int) {
splitImage(bmpScale, rows, 1) {
printText(it, false)
}
autoCut(isOpenCashBox)
}
if (bmpScale != null) {
val rows = bmpScale.height / 32 + 1
outputStream?.write(EscPosCommands.ESC_ALIGN_CENTER)
innerHandler(rows)
if (preferencesHelper.getPrintTwoForInvoice() && !isPrintCook)
innerHandler(rows)
} else {
Timber.e("Print Photo error - the file isn't exists")
}
} catch (e: Exception) {
e.printStackTrace()
Timber.e("PrintTools - the file isn't exists")
}
}```
```private fun splitImage(bitmap: Bitmap, rows: Int, cols: Int, doAction: (ByteArray) -> Unit) {
synchronized(this) {
try {
// For height and width of the small image chunks.
var chunkHeight = bitmap.height / rows + 1
val chunkWidth = bitmap.width / cols
// Getting the scaled bitmap of the source image.
val scaledBitmap = Bitmap.createScaledBitmap(bitmap, bitmap.width, bitmap.height, true)
// xCoord and yCoord are the pixel positions of the image chunks.
var yCoord = 0
for (x in 0 until rows) {
var xCoord = 0
for (y in 0 until cols) {
if (yCoord + chunkHeight > bitmap.height) {
chunkHeight = bitmap.height - yCoord
}
val bmp = Bitmap.createBitmap(scaledBitmap, xCoord, yCoord, chunkWidth, chunkHeight)
if (bmp != null) {
val command = EscPosUtils.decodeBitmap(bmp)
doAction(command)
} else {
Timber.e("Print Photo error - The file isn't exists")
}
xCoord += chunkWidth
}
yCoord += chunkHeight
}
} catch (e: Exception) {
e.printStackTrace()
}
}
}```
