fixed amount part of URI in QR-Codes / removed (no label) string if we have NO label / coding style updates / removed an unused variable

src/qt/addressbookpage.cpp

@@ -310,16 +310,14 @@ void AddressBookPage::on_showQRCode_clicked()
     QTableView *table = ui->tableView;
     QModelIndexList indexes = table->selectionModel()->selectedRows(AddressTableModel::Address);
 
-
-    QRCodeDialog *d;
     foreach (QModelIndex index, indexes)
     {
         QString address = index.data().toString(),
             label = index.sibling(index.row(), 0).data().toString(),
-            title = QString("%1 << %2 >>").arg(label).arg(address);
+            title = QString("<< %1 >>").arg(address);
 
-        QRCodeDialog *d = new QRCodeDialog(title, address, label, tab == ReceivingTab, this);
-        d->show();
+        QRCodeDialog *dialog = new QRCodeDialog(title, address, label, tab == ReceivingTab, this);
+        dialog->show();
     }
 #endif
 }

src/qt/qrcodedialog.cpp

@@ -24,6 +24,8 @@ QRCodeDialog::QRCodeDialog(const QString &title, const QString &addr, const QStr
     ui->lblAm1->setVisible(enableReq);
     ui->lblAm2->setVisible(enableReq);
 
+    // don't display "(no label)" if there IS no label, as this is confusing in the QR dialog
+    if(label != tr("(no label)"))
         ui->lnLabel->setText(label);
 
     genCode();
@@ -37,13 +39,14 @@ QRCodeDialog::~QRCodeDialog()
 void QRCodeDialog::genCode()
 {
     QString uri = getURI();
-    //qDebug() << "Encoding:" << uri.toUtf8().constData();
     QRcode *code = QRcode_encodeString(uri.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1);
     myImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32);
     myImage.fill(0xffffff);
     unsigned char *p = code->data;
-    for(int y = 0; y < code->width; y++) {
-        for(int x = 0; x < code->width; x++) {
+    for (int y = 0; y < code->width; y++)
+    {
+        for (int x = 0; x < code->width; x++)
+        {
             myImage.setPixel(x + 4, y + 4, ((*p & 1) ? 0x0 : 0xffffff));
             p++;
         }
@@ -57,22 +60,26 @@ QString QRCodeDialog::getURI()
     QString ret = QString("bitcoin:%1").arg(address);
 
     int paramCount = 0;
-    if(ui->chkReq->isChecked() && ui->lnReqAmount->text().isEmpty() == false) {
-        bool ok= false;
-        double amount = ui->lnReqAmount->text().toDouble(&ok);
-        if(ok) {
-            ret += QString("?amount=%1X8").arg(ui->lnReqAmount->text());
+    if (ui->chkReq->isChecked() && !ui->lnReqAmount->text().isEmpty())
+    {
+        bool ok = false;
+        ui->lnReqAmount->text().toDouble(&ok);
+        if (ok)
+        {
+            ret += QString("?amount=%1").arg(ui->lnReqAmount->text());
             paramCount++;
         }
     }
 
-    if(ui->lnLabel->text().isEmpty() == false) {
+    if (!ui->lnLabel->text().isEmpty())
+    {
         QString lbl(QUrl::toPercentEncoding(ui->lnLabel->text()));
         ret += QString("%1label=%2").arg(paramCount == 0 ? "?" : "&").arg(lbl);
         paramCount++;
     }
 
-    if(ui->lnMessage->text().isEmpty() == false) {
+    if (!ui->lnMessage->text().isEmpty())
+    {
         QString msg(QUrl::toPercentEncoding(ui->lnMessage->text()));
         ret += QString("%1message=%2").arg(paramCount == 0 ? "?" : "&").arg(msg);
         paramCount++;
@@ -99,9 +106,8 @@ void QRCodeDialog::on_lnMessage_textChanged(const QString &)
 void QRCodeDialog::on_btnSaveAs_clicked()
 {
     QString fn = GUIUtil::getSaveFileName(this, tr("Save Image..."), QString(), tr("PNG Images (*.png)"));
-    if(!fn.isEmpty()) {
+    if (!fn.isEmpty())
         myImage.scaled(EXPORT_IMAGE_SIZE, EXPORT_IMAGE_SIZE).save(fn);
-    }
 }
 
 void QRCodeDialog::on_chkReq_toggled(bool)