feat: 重构工单和物品打印模板为左右排布，支持二维码和条码

- 工单模板：左侧二维码+客户，右侧工单ID/标题/描述
- 物品模板：左侧二维码，右侧物品ID/名称/数量/位置/客户，底部条码+序列号
- 打印标签设置：新增标签宽度/高度/打印前回退长度设置
- QR码JSON增加type=ops_sys字段区分系统来源
- WorkOrder/Item模型增加linkedCustomers等关联数据
- 使用Canvas绘制Bitmap实现自定义打印布局

app/src/main/java/com/example/ops_android/data/local/SessionManager.kt

@@ -28,6 +28,9 @@ class SessionManager(private val context: Context) {
         private val KEY_COOKIE_REMEMBER = booleanPreferencesKey("cookie_remember")
         private val KEY_PRINTER_BLACK_MARK = booleanPreferencesKey("printer_black_mark")
         private val KEY_PRINTER_UNWIND_MM = intPreferencesKey("printer_unwind_mm")
+        private val KEY_LABEL_WIDTH_MM = intPreferencesKey("label_width_mm")
+        private val KEY_LABEL_HEIGHT_MM = intPreferencesKey("label_height_mm")
+        private val KEY_PRINT_RETRACT_MM = intPreferencesKey("print_retract_mm")
     }
 
     @Volatile
@@ -46,6 +49,18 @@ class SessionManager(private val context: Context) {
     var cachedUnwindMm: Int = 40
         private set
 
+    @Volatile
+    var cachedLabelWidthMm: Int = 53
+        private set
+
+    @Volatile
+    var cachedLabelHeightMm: Int = 40
+        private set
+
+    @Volatile
+    var cachedPrintRetractMm: Int = 10
+        private set
+
     fun clearCookieCache() {
         cachedCookieValue = ""
     }
@@ -59,6 +74,9 @@ class SessionManager(private val context: Context) {
         cachedCookieValue = prefs[KEY_COOKIE_VALUE] ?: ""
         cachedBlackMarkEnabled = prefs[KEY_PRINTER_BLACK_MARK] ?: true
         cachedUnwindMm = prefs[KEY_PRINTER_UNWIND_MM] ?: 40
+        cachedLabelWidthMm = prefs[KEY_LABEL_WIDTH_MM] ?: 53
+        cachedLabelHeightMm = prefs[KEY_LABEL_HEIGHT_MM] ?: 40
+        cachedPrintRetractMm = prefs[KEY_PRINT_RETRACT_MM] ?: 10
     }
 
     suspend fun getApiBaseUrl(): String = cachedBaseUrl.ifEmpty {
@@ -115,4 +133,19 @@ class SessionManager(private val context: Context) {
         cachedUnwindMm = mm
         context.dataStore.edit { it[KEY_PRINTER_UNWIND_MM] = mm }
     }
+
+    suspend fun setLabelWidthMm(mm: Int) {
+        cachedLabelWidthMm = mm
+        context.dataStore.edit { it[KEY_LABEL_WIDTH_MM] = mm }
+    }
+
+    suspend fun setLabelHeightMm(mm: Int) {
+        cachedLabelHeightMm = mm
+        context.dataStore.edit { it[KEY_LABEL_HEIGHT_MM] = mm }
+    }
+
+    suspend fun setPrintRetractMm(mm: Int) {
+        cachedPrintRetractMm = mm
+        context.dataStore.edit { it[KEY_PRINT_RETRACT_MM] = mm }
+    }
 }

app/src/main/java/com/example/ops_android/data/model/Item.kt

@@ -1,5 +1,6 @@
 package com.example.ops_android.data.model
 
+import com.example.ops_android.data.remote.api.LinkedCustomerInfo
 import com.google.gson.annotations.SerializedName
 
 data class Item(
@@ -14,7 +15,10 @@ data class Item(
     @SerializedName("CreatorID") val user_id: Int? = null,
     @SerializedName("barcode") private val _barcode: String? = null,
     @SerializedName("spec") private val _spec: String? = null,
-    @SerializedName("move_history") private val _move_history: List<MoveHistory>? = null
+    @SerializedName("move_history") private val _move_history: List<MoveHistory>? = null,
+    // Filled from detail API
+    @kotlin.jvm.Transient val linkedCustomers: List<LinkedCustomerInfo>? = null,
+    @kotlin.jvm.Transient val containerBreadcrumb: String? = null
 ) {
     val barcode: String? get() = _barcode
     val spec: String? get() = _spec

app/src/main/java/com/example/ops_android/data/model/WorkOrder.kt

@@ -1,5 +1,6 @@
 package com.example.ops_android.data.model
 
+import com.example.ops_android.data.remote.api.LinkedCustomer
 import com.google.gson.annotations.SerializedName
 
 data class WorkOrder(
@@ -11,7 +12,8 @@ data class WorkOrder(
     @SerializedName("UpdatedAt") val updated_at: String? = null,
     @SerializedName("UserID") val user_id: Int? = null,
     // Filled from detail API
-    @kotlin.jvm.Transient val commits: List<Commit>? = null
+    @kotlin.jvm.Transient val commits: List<Commit>? = null,
+    @kotlin.jvm.Transient val linkedCustomers: List<LinkedCustomer>? = null
 )
 
 data class WorkOrderCommit(

app/src/main/java/com/example/ops_android/data/repository/WarehouseRepository.kt

@@ -101,7 +101,12 @@ class WarehouseRepository(
         return try {
             val response = warehouseApi.getItem(GetItemRequest(id))
             if (response.errCode == 0 && response.data != null) {
-                Result.success(response.data)
+                val resp = response.data
+                val itm = resp.item?.copy(
+                    linkedCustomers = resp.customers,
+                    containerBreadcrumb = resp.container_breadcrumb
+                )
+                Result.success(resp.copy(item = itm))
             } else {
                 Result.failure(Exception("获取物品详情失败"))
             }

app/src/main/java/com/example/ops_android/data/repository/WorkOrderRepository.kt

@@ -29,7 +29,11 @@ class WorkOrderRepository(
         return try {
             val response = workOrderApi.get(WorkOrderGetRequest(id))
             if (response.errCode == 0 && response.data?.order != null) {
-                Result.success(response.data.order)
+                val detail = response.data
+                val wo = detail.order.copy(
+                    linkedCustomers = detail.linkedCustomers
+                )
+                Result.success(wo)
             } else {
                 Result.failure(Exception("获取工单详情失败"))
             }

app/src/main/java/com/example/ops_android/printer/PrintHelper.kt

@@ -1,16 +1,148 @@
 package com.example.ops_android.printer
 
+import android.graphics.Bitmap
+import android.graphics.Canvas
+import android.graphics.Color
+import android.graphics.Paint
+import android.text.Layout
+import android.text.StaticLayout
+import android.text.TextPaint
 import com.example.ops_android.data.model.Item
 import com.example.ops_android.data.model.PurchaseOrder
 import com.example.ops_android.data.model.WorkOrder
+import com.google.zxing.BarcodeFormat
+import com.google.zxing.EncodeHintType
+import com.google.zxing.oned.Code128Writer
+import com.google.zxing.qrcode.QRCodeWriter
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import kotlinx.coroutines.withContext
+import org.json.JSONObject
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
 
 object PrintHelper {
 
     private val printMutex = Mutex()
+    private const val DOTS_PER_MM = 8
+
+    private fun mmToDots(mm: Int): Int = mm * DOTS_PER_MM
+
+    private fun buildQrContent(module: String, id: Int): String {
+        val sdf = SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault())
+        return JSONObject().apply {
+            put("v", "v1")
+            put("module", module)
+            put("id", id)
+            put("printedAt", sdf.format(Date()))
+            put("type", "ops_sys")
+        }.toString()
+    }
+
+    private fun generateQRBitmap(content: String, size: Int): Bitmap {
+        val hints = mapOf(EncodeHintType.MARGIN to 1)
+        val bitMatrix = QRCodeWriter().encode(content, BarcodeFormat.QR_CODE, size, size, hints)
+        val bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888)
+        for (y in 0 until size) {
+            for (x in 0 until size) {
+                bitmap.setPixel(x, y, if (bitMatrix[x, y]) Color.BLACK else Color.WHITE)
+            }
+        }
+        return bitmap
+    }
+
+    private fun drawTextBlock(
+        canvas: Canvas,
+        label: String,
+        value: String,
+        x: Float,
+        y: Float,
+        maxWidth: Float,
+        maxLines: Int = 1,
+        textSize: Float = 22f,
+        bold: Boolean = false,
+        lineSpacingExtra: Float = 4f
+    ): Float {
+        val text = "$label$value"
+        val paint = TextPaint().apply {
+            color = Color.BLACK
+            this.textSize = textSize
+            isAntiAlias = true
+            isFakeBoldText = bold
+        }
+
+        val builder = StaticLayout.Builder.obtain(text, 0, text.length, paint, maxWidth.toInt())
+            .setAlignment(Layout.Alignment.ALIGN_NORMAL)
+            .setMaxLines(maxLines)
+            .setEllipsize(android.text.TextUtils.TruncateAt.END)
+            .setLineSpacing(lineSpacingExtra, 1f)
+
+        val layout = builder.build()
+        canvas.save()
+        canvas.translate(x, y)
+        layout.draw(canvas)
+        canvas.restore()
+
+        return y + layout.height
+    }
+
+    private fun buildWorkOrderLabelBitmap(wo: WorkOrder, widthDots: Int, heightDots: Int): Bitmap {
+        val bitmap = Bitmap.createBitmap(widthDots, heightDots, Bitmap.Config.ARGB_8888)
+        val canvas = Canvas(bitmap)
+        canvas.drawColor(Color.WHITE)
+
+        val padding = 12
+        val dividerX = (widthDots * 0.48).toInt()
+        val leftInnerWidth = dividerX - padding * 2
+        val qrSize = (leftInnerWidth * 0.95).toInt().coerceAtLeast(140)
+        val qrX = (dividerX - qrSize) / 2
+        val qrY = padding
+
+        val qrContent = buildQrContent("workorder", wo.id)
+        val qrBitmap = generateQRBitmap(qrContent, qrSize)
+        canvas.drawBitmap(qrBitmap, qrX.toFloat(), qrY.toFloat(), null)
+
+        val sepPaint = Paint().apply {
+            color = Color.BLACK
+            strokeWidth = 1.5f
+            isAntiAlias = true
+        }
+        canvas.drawLine(dividerX.toFloat(), padding.toFloat(), dividerX.toFloat(), (heightDots - padding).toFloat(), sepPaint)
+
+        val textX = (dividerX + padding).toFloat()
+        val textMaxWidth = (widthDots - dividerX - padding * 2).toFloat()
+        var textY = (padding - 2).toFloat()
+        val maxTextY = (heightDots - padding).toFloat()
+
+        textY = drawTextBlock(canvas, "", "工单：${wo.id}", textX, textY, textMaxWidth, textSize = 32f, bold = true, lineSpacingExtra = 6f)
+
+        if (textY < maxTextY) {
+            textY = drawTextBlock(canvas, "", "标题：${wo.title ?: "-"}", textX, textY, textMaxWidth, maxLines = 3, textSize = 28f, lineSpacingExtra = 4f)
+        }
+
+        if (textY < maxTextY) {
+            textY = drawTextBlock(canvas, "", "描述：${wo.description ?: "-"}", textX, textY, textMaxWidth, maxLines = 6, textSize = 28f, lineSpacingExtra = 4f)
+        }
+
+        val customerNames = wo.linkedCustomers
+            ?.mapNotNull { c ->
+                listOfNotNull(c.first_name, c.last_name)
+                    .joinToString(" ")
+                    .ifBlank { null }
+            }
+            ?.joinToString(", ")
+            ?: "-"
+        val customerText = "客户：$customerNames"
+        val customerY = qrY + qrSize + 4
+        val leftTextMaxWidth = (dividerX - padding * 2).toFloat()
+        if (customerY < heightDots - padding) {
+            drawTextBlock(canvas, "", customerText, padding.toFloat(), customerY.toFloat(), leftTextMaxWidth, maxLines = 2, textSize = 28f, lineSpacingExtra = 4f)
+        }
+
+        return bitmap
+    }
 
     suspend fun printOrderLabel(
         printerManager: PrinterManager,
@@ -45,20 +177,22 @@ object PrintHelper {
     suspend fun printWorkOrderLabel(
         printerManager: PrinterManager,
         workOrder: WorkOrder,
+        labelWidthMm: Int = 53,
+        labelHeightMm: Int = 40,
         blackMarkEnabled: Boolean = true,
-        unwindMm: Int = 40
+        unwindMm: Int = 40,
+        printRetractMm: Int = 10
     ): Result<Unit> = printMutex.withLock {
         withContext(Dispatchers.IO) {
             try {
                 printerManager.initDevice().onFailure { return@withContext Result.failure(it) }
-                printerManager.setFontSize(24)
+                if (printRetractMm > 0) {
-                printerManager.setBold(true)
+                    printerManager.setUnwindLength(mmToDots(printRetractMm))
-                printerManager.addText("工单: ${workOrder.title ?: "-"}\n")
-                printerManager.setFontSize(20)
-                printerManager.setBold(false)
-                if (workOrder.id > 0) {
-                    printerManager.addBarcode("WO-${workOrder.id}")
                 }
+                val widthDots = mmToDots(labelWidthMm)
+                val heightDots = mmToDots(labelHeightMm)
+                val bitmap = buildWorkOrderLabelBitmap(workOrder, widthDots, heightDots)
+                printerManager.printImage(bitmap, 1)
                 if (blackMarkEnabled) {
                     printerManager.addLineFeed(2)
                     printerManager.enableMarkDetection(true)
@@ -72,24 +206,109 @@ object PrintHelper {
         }
     }
 
+    private fun buildItemLabelBitmap(item: Item, widthDots: Int, heightDots: Int): Bitmap {
+        val bitmap = Bitmap.createBitmap(widthDots, heightDots, Bitmap.Config.ARGB_8888)
+        val canvas = Canvas(bitmap)
+        canvas.drawColor(Color.WHITE)
+
+        val padding = 12
+        val barcodeReserve = if (!item.serial_number.isNullOrBlank()) 70 else 0
+        val dividerX = (widthDots * 0.48).toInt()
+        val leftInnerWidth = dividerX - padding * 2
+        val qrSize = (leftInnerWidth * 0.95).toInt().coerceAtLeast(140)
+        val qrX = (dividerX - qrSize) / 2
+        val qrY = padding
+
+        val qrContent = buildQrContent("item", item.id)
+        val qrBitmap = generateQRBitmap(qrContent, qrSize)
+        canvas.drawBitmap(qrBitmap, qrX.toFloat(), qrY.toFloat(), null)
+
+        val sepPaint = Paint().apply {
+            color = Color.BLACK
+            strokeWidth = 1.5f
+            isAntiAlias = true
+        }
+
+        val textX = (dividerX + padding).toFloat()
+        val textMaxWidth = (widthDots - dividerX - padding * 2).toFloat()
+        var textY = (padding - 2).toFloat()
+        val maxTextY = heightDots - padding - barcodeReserve
+
+        textY = drawTextBlock(canvas, "", "物品：${item.id}", textX, textY, textMaxWidth, textSize = 32f, bold = true, lineSpacingExtra = 6f)
+
+        if (textY < maxTextY) {
+            textY = drawTextBlock(canvas, "", "名称：${item.name ?: "-"}", textX, textY, textMaxWidth, maxLines = 3, textSize = 25f, lineSpacingExtra = 4f)
+        }
+
+        if (textY < maxTextY && item.quantity != 1) {
+            textY = drawTextBlock(canvas, "", "数量：${item.quantity}", textX, textY, textMaxWidth, textSize = 25f, lineSpacingExtra = 4f)
+        }
+
+        if (textY < maxTextY && !item.containerBreadcrumb.isNullOrBlank()) {
+            textY = drawTextBlock(canvas, "", "位置：${item.containerBreadcrumb}", textX, textY, textMaxWidth, maxLines = 4, textSize = 25f, lineSpacingExtra = 4f)
+        }
+
+        if (textY < maxTextY && !item.linkedCustomers.isNullOrEmpty()) {
+            val customerNames = item.linkedCustomers
+                .mapNotNull { c ->
+                    listOfNotNull(c.first_name, c.last_name)
+                        .joinToString(" ")
+                        .ifBlank { null }
+                }
+                .joinToString(", ")
+            textY = drawTextBlock(canvas, "", "客户：$customerNames", textX, textY, textMaxWidth, maxLines = 2, textSize = 25f, lineSpacingExtra = 4f)
+        }
+
+        canvas.drawLine(dividerX.toFloat(), padding.toFloat(), dividerX.toFloat(), maxTextY.toFloat(), sepPaint)
+
+        if (!item.serial_number.isNullOrBlank()) {
+            canvas.drawLine(padding.toFloat(), maxTextY.toFloat(), (widthDots - padding).toFloat(), maxTextY.toFloat(), sepPaint)
+
+            val snTextY = maxTextY + 4
+            val snTextHeight = drawTextBlock(canvas, "", item.serial_number ?: "",
+                padding.toFloat(), snTextY.toFloat(),
+                (widthDots - padding * 2).toFloat(),
+                maxLines = 1, textSize = 22f, lineSpacingExtra = 0f
+            ) - snTextY
+
+            val barcodeWidth = widthDots - padding * 4
+            val barcodeHeight = 35
+            val barcodeX = (widthDots - barcodeWidth) / 2
+            val barcodeY = snTextY + snTextHeight + 4
+
+            val code128 = Code128Writer()
+            val barcodeMatrix = code128.encode(item.serial_number, BarcodeFormat.CODE_128, barcodeWidth, barcodeHeight)
+            val barcodeBitmap = Bitmap.createBitmap(barcodeWidth, barcodeHeight, Bitmap.Config.ARGB_8888)
+            for (y in 0 until barcodeHeight) {
+                for (x in 0 until barcodeWidth) {
+                    barcodeBitmap.setPixel(x, y, if (barcodeMatrix[x, y]) Color.BLACK else Color.WHITE)
+                }
+            }
+            canvas.drawBitmap(barcodeBitmap, barcodeX.toFloat(), barcodeY.toFloat(), null)
+        }
+
+        return bitmap
+    }
+
     suspend fun printItemLabel(
         printerManager: PrinterManager,
         item: Item,
+        labelWidthMm: Int = 53,
+        labelHeightMm: Int = 40,
         blackMarkEnabled: Boolean = true,
-        unwindMm: Int = 40
+        unwindMm: Int = 40,
+        printRetractMm: Int = 10
     ): Result<Unit> = printMutex.withLock {
         withContext(Dispatchers.IO) {
             try {
                 printerManager.initDevice().onFailure { return@withContext Result.failure(it) }
-                printerManager.setFontSize(24)
+                if (printRetractMm > 0) {
-                printerManager.setBold(true)
+                    printerManager.setUnwindLength(mmToDots(printRetractMm))
-                printerManager.addText("${item.name ?: "-"}\n")
-                printerManager.setFontSize(18)
-                printerManager.setBold(false)
-                item.serial_number?.let { printerManager.addText("编号: $it\n") }
-                if (item.id > 0) {
-                    printerManager.addBarcode("ITEM-${item.id}")
                 }
+                val widthDots = mmToDots(labelWidthMm)
+                val heightDots = mmToDots(labelHeightMm)
+                val bitmap = buildItemLabelBitmap(item, widthDots, heightDots)
+                printerManager.printImage(bitmap, 1)
                 if (blackMarkEnabled) {
                     printerManager.addLineFeed(2)
                     printerManager.enableMarkDetection(true)

app/src/main/java/com/example/ops_android/ui/settings/SettingsScreen.kt

@@ -148,6 +148,49 @@ fun SettingsScreen(
 
             HorizontalDivider(modifier = Modifier.padding(vertical = 8.dp))
 
+            Text("标签尺寸", style = MaterialTheme.typography.titleMedium)
+
+            OutlinedTextField(
+                value = uiState.labelWidthMm,
+                onValueChange = viewModel::onLabelWidthChange,
+                label = { Text("标签宽度 (mm)") },
+                suffix = { Text("mm") },
+                singleLine = true,
+                modifier = Modifier.fillMaxWidth()
+            )
+
+            OutlinedTextField(
+                value = uiState.labelHeightMm,
+                onValueChange = viewModel::onLabelHeightChange,
+                label = { Text("标签高度 (mm)") },
+                suffix = { Text("mm") },
+                singleLine = true,
+                modifier = Modifier.fillMaxWidth()
+            )
+
+            Button(onClick = { viewModel.saveLabelSize() }, modifier = Modifier.fillMaxWidth()) {
+                Text("保存标签尺寸")
+            }
+
+            HorizontalDivider(modifier = Modifier.padding(vertical = 8.dp))
+
+            Text("打印校准", style = MaterialTheme.typography.titleMedium)
+
+            OutlinedTextField(
+                value = uiState.printRetractMm,
+                onValueChange = viewModel::onPrintRetractMmChange,
+                label = { Text("打印前回退长度 (mm)") },
+                suffix = { Text("mm") },
+                singleLine = true,
+                modifier = Modifier.fillMaxWidth()
+            )
+
+            Button(onClick = { viewModel.savePrintRetractMm() }, modifier = Modifier.fillMaxWidth()) {
+                Text("保存回退长度")
+            }
+
+            HorizontalDivider(modifier = Modifier.padding(vertical = 8.dp))
+
             Text(
                 text = "关于",
                 style = MaterialTheme.typography.titleMedium

app/src/main/java/com/example/ops_android/ui/settings/SettingsViewModel.kt

@@ -25,7 +25,10 @@ data class SettingsUiState(
     val testSuccess: Boolean = false,
     val message: String? = null,
     val blackMarkEnabled: Boolean = true,
-    val unwindMm: String = "40"
+    val unwindMm: String = "40",
+    val labelWidthMm: String = "53",
+    val labelHeightMm: String = "40",
+    val printRetractMm: String = "10"
 )
 
 class SettingsViewModel(
@@ -56,7 +59,10 @@ class SettingsViewModel(
     private fun loadPrinterSettings() {
         _uiState.value = _uiState.value.copy(
             blackMarkEnabled = sessionManager.cachedBlackMarkEnabled,
-            unwindMm = sessionManager.cachedUnwindMm.toString()
+            unwindMm = sessionManager.cachedUnwindMm.toString(),
+            labelWidthMm = sessionManager.cachedLabelWidthMm.toString(),
+            labelHeightMm = sessionManager.cachedLabelHeightMm.toString(),
+            printRetractMm = sessionManager.cachedPrintRetractMm.toString()
         )
     }
 
@@ -83,6 +89,42 @@ class SettingsViewModel(
         }
     }
 
+    fun onLabelWidthChange(value: String) {
+        if (value.isEmpty() || value.all { it.isDigit() } && value.toIntOrNull()?.let { it in 10..200 } == true) {
+            _uiState.value = _uiState.value.copy(labelWidthMm = value)
+        }
+    }
+
+    fun onLabelHeightChange(value: String) {
+        if (value.isEmpty() || value.all { it.isDigit() } && value.toIntOrNull()?.let { it in 10..200 } == true) {
+            _uiState.value = _uiState.value.copy(labelHeightMm = value)
+        }
+    }
+
+    fun saveLabelSize() {
+        val width = _uiState.value.labelWidthMm.toIntOrNull() ?: 53
+        val height = _uiState.value.labelHeightMm.toIntOrNull() ?: 40
+        viewModelScope.launch {
+            sessionManager.setLabelWidthMm(width)
+            sessionManager.setLabelHeightMm(height)
+            _uiState.value = _uiState.value.copy(message = "标签尺寸已保存")
+        }
+    }
+
+    fun onPrintRetractMmChange(value: String) {
+        if (value.isEmpty() || value.all { it.isDigit() } && value.toIntOrNull()?.let { it in 0..50 } == true) {
+            _uiState.value = _uiState.value.copy(printRetractMm = value)
+        }
+    }
+
+    fun savePrintRetractMm() {
+        val mm = _uiState.value.printRetractMm.toIntOrNull() ?: 10
+        viewModelScope.launch {
+            sessionManager.setPrintRetractMm(mm)
+            _uiState.value = _uiState.value.copy(message = "回退长度已保存")
+        }
+    }
+
     fun saveUrl() {
         viewModelScope.launch {
             val url = _uiState.value.apiBaseUrl.trim()

app/src/main/java/com/example/ops_android/ui/warehouse/ItemDetailScreen.kt

@@ -129,9 +129,7 @@ fun ItemDetailScreen(id: Int, onBack: () -> Unit, onCreateWorkOrder: (Int) -> Un
                         val printerManager = app.printerManager
                         if (printerManager != null) {
                             IconButton(onClick = {
-                                scope.launch {
+                            scope.launch { PrintHelper.printItemLabel(printerManager, itm, labelWidthMm = app.sessionManager.cachedLabelWidthMm, labelHeightMm = app.sessionManager.cachedLabelHeightMm, blackMarkEnabled = app.sessionManager.cachedBlackMarkEnabled, unwindMm = app.sessionManager.cachedUnwindMm, printRetractMm = app.sessionManager.cachedPrintRetractMm) }
-                                    PrintHelper.printItemLabel(printerManager, itm, app.sessionManager.cachedBlackMarkEnabled, app.sessionManager.cachedUnwindMm)
-                                }
                             }) {
                                 Icon(Icons.Default.Print, "打印", tint = Color.White)
                             }

app/src/main/java/com/example/ops_android/ui/workorder/WorkOrderDetailScreen.kt

@@ -69,7 +69,7 @@ fun WorkOrderDetailScreen(id: Int, onBack: () -> Unit) {
                     if (printerManager != null) {
                         val sm = com.example.ops_android.ui.LocalAppContainer.current.sessionManager
                         IconButton(onClick = {
-                            scope.launch { com.example.ops_android.printer.PrintHelper.printWorkOrderLabel(printerManager, wo_, sm.cachedBlackMarkEnabled, sm.cachedUnwindMm) }
+                            scope.launch { com.example.ops_android.printer.PrintHelper.printWorkOrderLabel(printerManager, wo_, labelWidthMm = sm.cachedLabelWidthMm, labelHeightMm = sm.cachedLabelHeightMm, blackMarkEnabled = sm.cachedBlackMarkEnabled, unwindMm = sm.cachedUnwindMm, printRetractMm = sm.cachedPrintRetractMm) }
                         }) { Icon(Icons.Default.Print, "打印", tint = Color.White) }
                     }
                 }