make initial block download reporting somewhat better by tracking version responses

src/main.cpp

@@ -32,7 +32,7 @@ map<COutPoint, CInPoint> mapNextTx;
 map<uint256, CBlockIndex*> mapBlockIndex;
 uint256 hashGenesisBlock("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f");
 CBigNum bnProofOfWorkLimit(~uint256(0) >> 32);
-const int nTotalBlocksEstimate = 134444; // Conservative estimate of total nr of blocks on main chain
+int nTotalBlocksEstimate = 134444; // Conservative estimate of total nr of blocks on main chain
 const int nInitialBlockThreshold = 120; // Regard blocks up until N-threshold as "initial download"
 CBlockIndex* pindexGenesisBlock = NULL;
 int nBestHeight = -1;
@@ -1869,6 +1869,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
         pfrom->fSuccessfullyConnected = true;
 
         printf("version message: version %d, blocks=%d\n", pfrom->nVersion, pfrom->nStartingHeight);
+        if(pfrom->nStartingHeight > nTotalBlocksEstimate)
+        {
+            nTotalBlocksEstimate = pfrom->nStartingHeight;
+        }
     }
 
 

src/qt/bitcoingui.cpp

@@ -292,17 +292,21 @@ void BitcoinGUI::setNumConnections(int count)
 void BitcoinGUI::setNumBlocks(int count)
 {
     int total = clientModel->getTotalBlocksEstimate();
+    QString tooltip;
+
     if(count < total)
     {
         progressBarLabel->setVisible(true);
         progressBar->setVisible(true);
         progressBar->setMaximum(total);
         progressBar->setValue(count);
+        tooltip = tr("Downloaded %1 of %2 blocks of transaction history.").arg(count).arg(total);
     }
     else
     {
         progressBarLabel->setVisible(false);
         progressBar->setVisible(false);
+        tooltip = tr("Downloaded %1 blocks of transaction history.").arg(count);
     }
 
     QDateTime now = QDateTime::currentDateTime();
@@ -329,10 +333,13 @@ void BitcoinGUI::setNumBlocks(int count)
     {
         text = tr("%n day(s) ago","",secs/(60*60*24));
     }
+    tooltip += QString("\n");
+    tooltip += tr("Last block was generated %1.").arg(QLocale::system().toString(lastBlockDate));
 
     labelBlocks->setText("<img src=\""+icon+"\"> " + text);
-    labelBlocks->setToolTip(tr("Downloaded %n block(s) of transaction history. Last block was generated %1.", "", count)
-                            .arg(QLocale::system().toString(lastBlockDate)));
+    labelBlocks->setToolTip(tooltip);
+    progressBarLabel->setToolTip(tooltip);
+    progressBar->setToolTip(tooltip);
 }
 
 void BitcoinGUI::error(const QString &title, const QString &message)

src/qt/clientmodel.cpp

@@ -10,7 +10,8 @@
 #include <QDateTime>
 
 ClientModel::ClientModel(CWallet *wallet, QObject *parent) :
-    QObject(parent), wallet(wallet), optionsModel(0)
+    QObject(parent), wallet(wallet), optionsModel(0),
+    cachedNumConnections(0), cachedNumBlocks(0)
 {
     // Until signal notifications is built into the bitcoin core,
     //  simply update everything after polling using a timer.
@@ -38,11 +39,16 @@ QDateTime ClientModel::getLastBlockDate() const
 
 void ClientModel::update()
 {
-    // Plainly emit all signals for now. To be more efficient this should check
-    //   whether the values actually changed first, although it'd be even better if these
-    //   were events coming in from the bitcoin core.
-    emit numConnectionsChanged(getNumConnections());
-    emit numBlocksChanged(getNumBlocks());
+    int newNumConnections = getNumConnections();
+    int newNumBlocks = getNumBlocks();
+
+    if(cachedNumConnections != newNumConnections)
+        emit numConnectionsChanged(newNumConnections);
+    if(cachedNumBlocks != newNumBlocks)
+        emit numBlocksChanged(newNumBlocks);
+
+    cachedNumConnections = newNumConnections;
+    cachedNumBlocks = newNumBlocks;
 }
 
 bool ClientModel::isTestNet() const

src/qt/clientmodel.h

@@ -42,6 +42,9 @@ private:
 
     OptionsModel *optionsModel;
 
+    int cachedNumConnections;
+    int cachedNumBlocks;
+
 signals:
     void numConnectionsChanged(int count);
     void numBlocksChanged(int count);

src/qt/guiconstants.h

@@ -2,7 +2,7 @@
 #define GUICONSTANTS_H
 
 /* milliseconds between model updates */
-static const int MODEL_UPDATE_DELAY = 250;
+static const int MODEL_UPDATE_DELAY = 500;
 
 /* size of cache */
 static const unsigned int WALLET_CACHE_SIZE = 100;

src/qt/walletmodel.cpp

@@ -11,7 +11,8 @@
 
 WalletModel::WalletModel(CWallet *wallet, QObject *parent) :
     QObject(parent), wallet(wallet), optionsModel(0), addressTableModel(0),
-    transactionTableModel(0)
+    transactionTableModel(0),
+    cachedBalance(0), cachedUnconfirmedBalance(0), cachedNumTransactions(0)
 {
     // Until signal notifications is built into the bitcoin core,
     //  simply update everything after polling using a timer.
@@ -46,11 +47,19 @@ int WalletModel::getNumTransactions() const
 
 void WalletModel::update()
 {
-    // Plainly emit all signals for now. To be more efficient this should check
-    //   whether the values actually changed first, although it'd be even better if these
-    //   were events coming in from the bitcoin core.
-    emit balanceChanged(getBalance(), wallet->GetUnconfirmedBalance());
-    emit numTransactionsChanged(getNumTransactions());
+    qint64 newBalance = getBalance();
+    qint64 newUnconfirmedBalance = getUnconfirmedBalance();
+    int newNumTransactions = getNumTransactions();
+
+    if(cachedBalance != newBalance || cachedUnconfirmedBalance != newUnconfirmedBalance)
+        emit balanceChanged(newBalance, newUnconfirmedBalance);
+
+    if(cachedNumTransactions != newNumTransactions)
+        emit numTransactionsChanged(newNumTransactions);
+
+    cachedBalance = newBalance;
+    cachedUnconfirmedBalance = newUnconfirmedBalance;
+    cachedNumTransactions = newNumTransactions;
 
     addressTableModel->update();
 }

src/qt/walletmodel.h

@@ -73,6 +73,10 @@ private:
     AddressTableModel *addressTableModel;
     TransactionTableModel *transactionTableModel;
 
+    qint64 cachedBalance;
+    qint64 cachedUnconfirmedBalance;
+    qint64 cachedNumTransactions;
+
 signals:
     void balanceChanged(qint64 balance, qint64 unconfirmedBalance);
     void numTransactionsChanged(int count);