Implemented generating EPC QR code for JavaFX

EpcQrCodeJavaFxApp/build.gradle.kts

@@ -32,7 +32,7 @@ tasks.withType<KotlinCompile>() {
 dependencies {
     implementation(kotlin("stdlib-jdk8"))
 
-    implementation(project(":EpcQrCode"))
+    api(project(":EpcQrCode"))
 
     implementation("net.dankito.utils:java-fx-utils:1.0.8")
 }

EpcQrCodeJavaFxApp/src/main/kotlin/net/codinux/banking/epcqrcode/windows/main/MainWindow.kt

@@ -1,32 +1,137 @@
 package net.codinux.banking.epcqrcode.windows.main
 
 import javafx.beans.property.SimpleObjectProperty
+import javafx.beans.property.SimpleStringProperty
+import javafx.geometry.Pos
+import javafx.scene.control.TextFormatter
 import javafx.scene.image.Image
-import tornadofx.*
-import java.io.ByteArrayInputStream
 import net.codinux.banking.epcqrcode.*
 import org.slf4j.LoggerFactory
+import tornadofx.*
+import java.io.ByteArrayInputStream
+import java.text.DecimalFormat
+import java.text.ParsePosition
 
 
 class MainWindow : View(FX.messages["application.title"]) {
 
     companion object {
+        private const val FieldHeight = 31.0
+
+        private val DecimalFormat = DecimalFormat( "#.0" )
+
         private val logger = LoggerFactory.getLogger(MainWindow::class.java)
     }
 
 
-    private val qrCodeContent = EpcQrCodeCreator().generateAsString(CreatorParam("Mahatma Gandhi", "IN00123456789876543210", null, 1234.56, "Struggle for independence")) // TODO: remove again
+    private val receiver = SimpleStringProperty("")
+
+    private val iban = SimpleStringProperty("")
+
+    private val bic = SimpleStringProperty("")
+
+    private val amount = SimpleStringProperty("")
+
+    private val reference = SimpleStringProperty("")
+
 
     private val qrCodeGenerator = QrCodeGenerator()
 
-    private val qrCode = SimpleObjectProperty<Image>(generateQrCode(qrCodeContent))
+    private val generatedQrCode = SimpleObjectProperty<Image>()
 
 
     override val root = vbox {
-        imageview(qrCode)
+        prefWidth = 350.0
+
+        form {
+            fieldset {
+                field(messages["Receiver"]) {
+                    textfield(receiver) {
+                        prefHeight = FieldHeight
+                    }
+                }
+
+                field(messages["IBAN"]) {
+                    textfield(iban) {
+                        prefHeight = FieldHeight
+                    }
+                }
+
+                field(messages["BIC"]) {
+                    textfield(bic) {
+                        prefHeight = FieldHeight
+                    }
+                }
+
+                field(messages["Amount"]) {
+                    textfield(amount) {
+                        prefHeight = FieldHeight
+
+                        setTextFormatter(TextFormatter<String> { change ->
+                            isDecimalNumberEntered(change)
+                        })
+                    }
+                }
+
+                field(messages["Reference"]) {
+                    textfield(reference) {
+                        prefHeight = FieldHeight
+                    }
+                }
+            }
+
+            hbox(alignment = Pos.CENTER_RIGHT) {
+                button(messages["Generate"]) {
+                    prefWidth = 200.0
+                    minHeight = 36.0
+
+                    action { generateQrCode() }
+                }
+            }
+        }
+
+        hbox(alignment = Pos.CENTER) {
+            imageview(generatedQrCode) {
+                hboxConstraints {
+                    marginTop = 4.0
+                }
+            }
+        }
     }
 
 
+    private fun isDecimalNumberEntered(change: TextFormatter.Change): TextFormatter.Change? {
+        val newText = change.controlNewText
+
+        if (newText.isEmpty()) {
+            return change
+        }
+
+        val parsePosition = ParsePosition(0)
+        val parsedNumber = DecimalFormat.parse(newText, parsePosition)
+
+        return if (parsedNumber == null || parsePosition.index < newText.length) {
+            null
+        }
+        else {
+            change
+        }
+    }
+
+
+    private fun generateQrCode() {
+        val param = CreatorParam(receiver.value, iban.value, bic.value, map(amount.value), reference.value)
+        val qrCodeContent = EpcQrCodeCreator().generateAsString(param)
+
+        generatedQrCode.value = generateQrCode(qrCodeContent)
+
+        currentStage?.sizeToScene()
+    }
+
+    private fun map(amount: String): Double? {
+        return DecimalFormat.parse(amount, ParsePosition(0))?.toDouble()
+    }
+
     private fun generateQrCode(informationToEncode: String): Image? {
         try {
             val qrCodeBytes = qrCodeGenerator.generateQrCode(informationToEncode)

EpcQrCodeJavaFxApp/src/main/resources/Messages.properties

@@ -1,4 +1,4 @@
-application.title=EPC QR Code
+application.title=EPC QR Code Generator
 
 
 ok=OK
@@ -6,4 +6,12 @@ cancel=Cancel
 
 
 main.window.menu.file=File
-main.window.menu.file.quit=Quit
+main.window.menu.file.quit=Quit
+
+Receiver=Receiver
+IBAN=IBAN
+BIC=BIC
+Amount=Amount
+Reference=Reference
+
+Generate=Generate

EpcQrCodeJavaFxApp/src/main/resources/Messages_de.properties

@@ -6,4 +6,12 @@ cancel=Abbrechen
 
 
 main.window.menu.file=Datei
-main.window.menu.file.quit=Beenden
+main.window.menu.file.quit=Beenden
+
+Receiver=Empfänger
+IBAN=IBAN
+BIC=BIC
+Amount=Betrag
+Reference=Verwendungszweck
+
+Generate=Erstellen