Add SEPA QR Code for buyer payment

core/src/main/resources/i18n/displayStrings.properties

@@ -101,6 +101,8 @@ shared.dontRemoveOffer=Don't remove offer
 shared.editOffer=Edit offer
 shared.duplicateOffer=Duplicate offer
 shared.openLargeQRWindow=Open large QR code window
+shared.showSepaQRCode=Show SEPA QR Code
+shared.maximizedToProtectPrivacy=In order to protect your privacy, the QR Code will be shown maximized over the application window.
 shared.chooseTradingAccount=Choose trading account
 shared.faq=Visit FAQ page
 shared.yesCancel=Yes, cancel

desktop/src/main/java/bisq/desktop/components/paymentmethods/GeneralSepaForm.java

@@ -1,10 +1,15 @@
 package bisq.desktop.components.paymentmethods;
 
+import bisq.desktop.components.AutoTooltipButton;
 import bisq.desktop.components.AutoTooltipCheckBox;
+import bisq.desktop.main.overlays.windows.QRCodeWindow;
 import bisq.desktop.util.FormBuilder;
+import bisq.desktop.util.GUIUtil;
+import bisq.desktop.util.Layout;
 
 import bisq.core.account.witness.AccountAgeWitnessService;
 import bisq.core.locale.Country;
+import bisq.core.locale.CountryUtil;
 import bisq.core.locale.Res;
 import bisq.core.locale.TradeCurrency;
 import bisq.core.payment.CountryBasedPaymentAccount;
@@ -14,9 +19,13 @@
 
 import org.apache.commons.lang3.StringUtils;
 
+import de.jensd.fx.glyphs.materialdesignicons.MaterialDesignIcon;
+import de.jensd.fx.glyphs.materialdesignicons.utils.MaterialDesignIconFactory;
+
 import com.jfoenix.controls.JFXComboBox;
 import com.jfoenix.controls.JFXTextField;
 
+import javafx.scene.control.Button;
 import javafx.scene.control.CheckBox;
 import javafx.scene.control.ComboBox;
 import javafx.scene.control.TextField;
@@ -25,18 +34,50 @@
 import javafx.scene.layout.GridPane;
 import javafx.scene.layout.HBox;
 
+import javafx.geometry.Insets;
+
 import javafx.util.StringConverter;
 
 import java.util.List;
 import java.util.Objects;
 
+import lombok.extern.slf4j.Slf4j;
+
+import static bisq.desktop.util.FormBuilder.addCompactTopLabelTextFieldWithCopyIcon;
 import static bisq.desktop.util.FormBuilder.addTopLabelWithVBox;
 
+@Slf4j
 public abstract class GeneralSepaForm extends PaymentMethodForm {
 
     static final String BIC = "BIC";
     static final String IBAN = "IBAN";
 
+    public static int addFormForBuyer(GridPane gridPane, int gridRow, String amount,
+                                      String countryCode, String recipient, String bic, String iban) {
+        Button showQrCodeButton = new AutoTooltipButton(Res.get("shared.showSepaQRCode"),
+                MaterialDesignIconFactory.get().createIcon(MaterialDesignIcon.QRCODE, "2.0em"));
+        GridPane.setRowIndex(showQrCodeButton, gridRow);
+        GridPane.setColumnIndex(showQrCodeButton, 0);
+        gridPane.getChildren().add(showQrCodeButton);
+        GridPane.setMargin(showQrCodeButton, new Insets(66 + Layout.FLOATING_LABEL_DISTANCE, 0, 0, 0));
+        showQrCodeButton.setStyle("-fx-pref-height: 27; -fx-padding: 4 4 4 4;");
+        GridPane.setColumnIndex(showQrCodeButton, 1);
+        showQrCodeButton.setOnMouseClicked(e -> GUIUtil.showMaximizedToProtectPrivacyMessage(() ->
+                new QRCodeWindow(constructQRCodeString(bic, iban, recipient, amount))
+                    .withoutText()
+                    .setWindowDimensions(gridPane.getScene().getWindow().getWidth() * 1.05,
+                            gridPane.getScene().getWindow().getHeight() * 1.05)
+                    .show()));
+
+        addCompactTopLabelTextFieldWithCopyIcon(gridPane, ++gridRow, Res.get("payment.account.owner"), recipient);
+        addCompactTopLabelTextFieldWithCopyIcon(gridPane, gridRow, 1, BIC, bic);
+        addCompactTopLabelTextFieldWithCopyIcon(gridPane, ++gridRow,
+                Res.get("payment.bank.country"), CountryUtil.getNameAndCode(countryCode));
+        addCompactTopLabelTextFieldWithCopyIcon(gridPane, gridRow, 1, IBAN, iban);
+
+        return gridRow;
+    }
+
     GeneralSepaForm(PaymentAccount paymentAccount, AccountAgeWitnessService accountAgeWitnessService, InputValidator inputValidator, GridPane gridPane, int gridRow, CoinFormatter formatter) {
         super(paymentAccount, accountAgeWitnessService, inputValidator, gridPane, gridRow, formatter);
     }
@@ -134,4 +175,14 @@ public Country fromString(String s) {
     abstract boolean isCountryAccepted(String countryCode);
 
     protected abstract String getIban();
+
+    // see https://en.wikipedia.org/wiki/EPC_QR_code
+    private static String constructQRCodeString(String bic, String iban, String recipient, String amountCcy) {
+        String paymentBase = "BCD\n001\n1\nSCT\n" + bic + "\n" + recipient + "\n" + iban;
+        String[] amountSplit = amountCcy.split(" ");
+        if (amountSplit.length == 2) {
+            return paymentBase + "\n" + amountSplit[1] + amountSplit[0]; // ccy and amount combined, EPC_QR_code spec
+        }
+        return paymentBase;
+    }
 }

desktop/src/main/java/bisq/desktop/components/paymentmethods/SepaForm.java

@@ -45,25 +45,17 @@
 import java.util.Optional;
 
 import static bisq.desktop.util.FormBuilder.addCompactTopLabelTextField;
-import static bisq.desktop.util.FormBuilder.addCompactTopLabelTextFieldWithCopyIcon;
 
 public class SepaForm extends GeneralSepaForm {
 
     public static int addFormForBuyer(GridPane gridPane, int gridRow,
-                                      PaymentAccountPayload paymentAccountPayload) {
+                                      PaymentAccountPayload paymentAccountPayload, String amount) {
         SepaAccountPayload sepaAccountPayload = (SepaAccountPayload) paymentAccountPayload;
-
-        final String title = Res.get("payment.account.owner");
-        final String value = sepaAccountPayload.getHolderName();
-        addCompactTopLabelTextFieldWithCopyIcon(gridPane, ++gridRow, title, value);
-
-        addCompactTopLabelTextFieldWithCopyIcon(gridPane, gridRow, 1,
-                Res.get("payment.bank.country"),
-                CountryUtil.getNameAndCode(sepaAccountPayload.getCountryCode()));
-        // IBAN, BIC will not be translated
-        addCompactTopLabelTextFieldWithCopyIcon(gridPane, ++gridRow, IBAN, sepaAccountPayload.getIban());
-        addCompactTopLabelTextFieldWithCopyIcon(gridPane, gridRow, 1, BIC, sepaAccountPayload.getBic());
-        return gridRow;
+        return GeneralSepaForm.addFormForBuyer(gridPane, gridRow, amount,
+                sepaAccountPayload.getCountryCode(),
+                sepaAccountPayload.getHolderName(),
+                sepaAccountPayload.getBic(),
+                sepaAccountPayload.getIban());
     }
 
     private final SepaAccount sepaAccount;

desktop/src/main/java/bisq/desktop/components/paymentmethods/SepaInstantForm.java

@@ -45,25 +45,17 @@
 import java.util.Optional;
 
 import static bisq.desktop.util.FormBuilder.addCompactTopLabelTextField;
-import static bisq.desktop.util.FormBuilder.addCompactTopLabelTextFieldWithCopyIcon;
 
 public class SepaInstantForm extends GeneralSepaForm {
 
     public static int addFormForBuyer(GridPane gridPane, int gridRow,
-                                      PaymentAccountPayload paymentAccountPayload) {
+                                      PaymentAccountPayload paymentAccountPayload, String amount) {
         SepaInstantAccountPayload sepaInstantAccountPayload = (SepaInstantAccountPayload) paymentAccountPayload;
-
-        final String title = Res.get("payment.account.owner");
-        final String value = sepaInstantAccountPayload.getHolderName();
-        addCompactTopLabelTextFieldWithCopyIcon(gridPane, ++gridRow, title, value);
-
-        addCompactTopLabelTextFieldWithCopyIcon(gridPane, gridRow, 1,
-                Res.get("payment.bank.country"),
-                CountryUtil.getNameAndCode(sepaInstantAccountPayload.getCountryCode()));
-        // IBAN, BIC will not be translated
-        addCompactTopLabelTextFieldWithCopyIcon(gridPane, ++gridRow, IBAN, sepaInstantAccountPayload.getIban());
-        addCompactTopLabelTextFieldWithCopyIcon(gridPane, gridRow, 1, BIC, sepaInstantAccountPayload.getBic());
-        return gridRow;
+        return GeneralSepaForm.addFormForBuyer(gridPane, gridRow, amount,
+                sepaInstantAccountPayload.getCountryCode(),
+                sepaInstantAccountPayload.getHolderName(),
+                sepaInstantAccountPayload.getBic(),
+                sepaInstantAccountPayload.getIban());
     }
 
     private final SepaInstantAccount sepaInstantAccount;

desktop/src/main/java/bisq/desktop/main/overlays/windows/QRCodeWindow.java

@@ -27,53 +27,70 @@
 import javafx.scene.image.Image;
 import javafx.scene.image.ImageView;
 import javafx.scene.layout.GridPane;
+import javafx.scene.layout.Region;
 
 import javafx.geometry.HPos;
 
 import java.io.ByteArrayInputStream;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 public class QRCodeWindow extends Overlay<QRCodeWindow> {
-    private static final Logger log = LoggerFactory.getLogger(QRCodeWindow.class);
-    private final ImageView qrCodeImageView;
+    private ImageView qrCodeImageView;
     private final String bitcoinAddressOrURI;
+    private boolean showTextRepresentation = true;
+    private double prefWidth = 500, prefHeight = 500;
 
     public QRCodeWindow(String bitcoinAddressOrURI) {
         this.bitcoinAddressOrURI = bitcoinAddressOrURI;
-        final byte[] imageBytes = QRCode
-                .from(bitcoinAddressOrURI)
-                .withSize(250, 250)
-                .to(ImageType.PNG)
-                .stream()
-                .toByteArray();
-        Image qrImage = new Image(new ByteArrayInputStream(imageBytes));
-        qrCodeImageView = new ImageView(qrImage);
-
         type = Type.Information;
-        width = 468;
         headLine(Res.get("qRCodeWindow.headline"));
         message(Res.get("qRCodeWindow.msg"));
     }
 
     @Override
     public void show() {
         createGridPane();
+        gridPane.setPrefWidth(prefWidth);
+        gridPane.setMinHeight(prefHeight);
         addHeadLine();
 
+        Region spacer = new Region();
+        spacer.setMinHeight(prefHeight / 8);
+        gridPane.add(spacer, 0, ++rowIndex);
+
+        final byte[] imageBytes = QRCode
+                .from(bitcoinAddressOrURI)
+                .withSize((int) prefWidth / 2, (int) prefHeight / 2)
+                .to(ImageType.PNG)
+                .stream()
+                .toByteArray();
+        Image qrImage = new Image(new ByteArrayInputStream(imageBytes));
+        qrCodeImageView = new ImageView(qrImage);
+
         GridPane.setRowIndex(qrCodeImageView, ++rowIndex);
         GridPane.setColumnSpan(qrCodeImageView, 2);
         GridPane.setHalignment(qrCodeImageView, HPos.CENTER);
         gridPane.getChildren().add(qrCodeImageView);
 
         message = bitcoinAddressOrURI.replace("%20", " ").replace("?", "\n?").replace("&", "\n&");
         setTruncatedMessage();
-        addMessage();
-        GridPane.setHalignment(messageLabel, HPos.CENTER);
+        if (showTextRepresentation) {
+            addMessage();
+            GridPane.setHalignment(messageLabel, HPos.CENTER);
+        }
 
         addButtons();
         applyStyles();
         display();
     }
+
+    public QRCodeWindow withoutText() {
+        showTextRepresentation = false;
+        return this;
+    }
+
+    public QRCodeWindow setWindowDimensions(double width, double height) {
+        this.prefWidth = width;
+        this.prefHeight = height;
+        return this;
+    }
 }

desktop/src/main/java/bisq/desktop/main/portfolio/pendingtrades/steps/buyer/BuyerStep2View.java

@@ -283,10 +283,10 @@ protected void addContent() {
                 gridRow = PerfectMoneyForm.addFormForBuyer(gridPane, gridRow, paymentAccountPayload);
                 break;
             case PaymentMethod.SEPA_ID:
-                gridRow = SepaForm.addFormForBuyer(gridPane, gridRow, paymentAccountPayload);
+                gridRow = SepaForm.addFormForBuyer(gridPane, gridRow, paymentAccountPayload, model.getFiatVolume());
                 break;
             case PaymentMethod.SEPA_INSTANT_ID:
-                gridRow = SepaInstantForm.addFormForBuyer(gridPane, gridRow, paymentAccountPayload);
+                gridRow = SepaInstantForm.addFormForBuyer(gridPane, gridRow, paymentAccountPayload, model.getFiatVolume());
                 break;
             case PaymentMethod.FASTER_PAYMENTS_ID:
                 gridRow = FasterPaymentsForm.addFormForBuyer(gridPane, gridRow, paymentAccountPayload);

desktop/src/main/java/bisq/desktop/util/GUIUtil.java

@@ -743,6 +743,20 @@ public static <T> T getParentOfType(Node node, Class<T> t) {
         return t.cast(parent);
     }
 
+    public static void showMaximizedToProtectPrivacyMessage(Runnable runnable) {
+        String msg = Res.get("shared.maximizedToProtectPrivacy");
+        String id = "shared.maximizedToProtectPrivacy";
+        if (preferences.showAgain(id)) {
+            new Popup().information(msg)
+                    .onClose(runnable)
+                    .useIUnderstandButton()
+                    .show();
+            DontShowAgainLookup.dontShowAgain(id, true);
+        } else {
+            runnable.run();
+        }
+    }
+
     public static void showTakeOfferFromUnsignedAccountWarning() {
         String key = "confirmTakeOfferFromUnsignedAccount";
         new Popup().warning(Res.get("payment.takeOfferFromUnsignedAccount.warning"))