The balance fiat display does not 'round to ceiling' anymore, instead introduced some more decimals:

![https://i.imgur.com/aZAonV4.png](https://i.imgur.com/aZAonV4.png)

New fiat columns in the history table:

- Historical price (`balance * historical fiat price`)
- Historical rate (the historical fiat price at that date)
- Current price (`balance * current fiat price`)

![https://i.imgur.com/QkWCLRf.png](https://i.imgur.com/QkWCLRf.png)

When preferred fiat is changed (in the settings), the balance fiat display now follows accordingly.

Requires https://git.wownero.com/wowlet/wowlet-backend/pulls/19

src/appcontext.cpp

@@ -334,6 +334,7 @@ void AppContext::onPreferredFiatCurrencyChanged(const QString &symbol) {
         auto *model = this->currentWallet->transactionHistoryModel();
         if(model != nullptr) {
             model->preferredFiatSymbol = symbol;
+            this->currentWallet->transactionHistoryModel()->transactionHistory()->calcFiatInfo();
         }
     }
 }
@@ -379,6 +380,13 @@ void AppContext::onWalletOpened(Wallet *wallet) {
     connect(this->currentWallet, &Wallet::heightRefreshed, this, &AppContext::onHeightRefreshed);
     connect(this->currentWallet, &Wallet::transactionCreated, this, &AppContext::onTransactionCreated);
 
+    this->currentWallet->historyModel();  // load historyModel
+    auto *txHistory = this->currentWallet->history();
+    txHistory->refresh(this->currentWallet->currentSubaddressAccount());
+
+    connect(AppContext::prices, &Prices::fiatPricesUpdated, txHistory, &TransactionHistory::calcFiatInfo);
+    connect(AppContext::prices, &Prices::cryptoPricesUpdated, txHistory, &TransactionHistory::calcFiatInfo);
+
     emit walletOpened(wallet);
 
     connect(this->currentWallet, &Wallet::connectionStatusChanged, [this]{