show exchange rate in transaction edit page when the currencies of source account and destination account are different

src/views/desktop/transactions/list/dialogs/EditDialog.vue

@@ -73,7 +73,7 @@
                                                   :disabled="loading || submitting"
                                                   :persistent-placeholder="true"
                                                   :hide="transaction.hideAmount"
-                                                  :label="$t('Transfer In Amount')"
+                                                  :label="transferInAmountTitle"
                                                   :placeholder="$t('Transfer In Amount')"
                                                   v-model="transaction.destinationAmount"/>
                                 </v-col>
@@ -325,6 +325,9 @@ import {
     getTimezoneOffsetMinutes,
     getCurrentUnixTime
 } from '@/lib/datetime.js';
+import {
+    getAdaptiveDisplayAmountRate
+} from '@/lib/currency.js';
 import {
     getFirstAvailableCategoryId
 } from '@/lib/category.js';
@@ -417,6 +420,24 @@ export default {
                 return 'Account';
             }
         },
+        transferInAmountTitle() {
+            const sourceAccount = this.allAccountsMap[this.transaction.sourceAccountId];
+            const destinationAccount = this.allAccountsMap[this.transaction.destinationAccountId];
+
+            if (!sourceAccount || !destinationAccount || sourceAccount.currency === destinationAccount.currency) {
+                return this.$t('Transfer In Amount');
+            }
+
+            const fromExchangeRate = this.exchangeRatesStore.latestExchangeRateMap[sourceAccount.currency];
+            const toExchangeRate = this.exchangeRatesStore.latestExchangeRateMap[destinationAccount.currency];
+            const amountRate = getAdaptiveDisplayAmountRate(this.transaction.sourceAmount, this.transaction.destinationAmount, fromExchangeRate, toExchangeRate, this.settingsStore.appSettings.thousandsSeparator);
+
+            if (!amountRate) {
+                return this.$t('Transfer In Amount');
+            }
+
+            return this.$t('Transfer In Amount') + ` (${amountRate})`;
+        },
         defaultCurrency() {
             return this.userStore.currentUserDefaultCurrency;
         },