Wallet encryption part 1: show wallet encryption status

doc/assets-attribution.txt

@@ -15,7 +15,7 @@ Designer: FatCow Web Hosting
 License: Creative Commons Attribution (by)
 Site: http://findicons.com/icon/163938/book_open
 
-Icon: src/qt/res/icons/connect*.png, src/qt/res/icons/synced.png
+Icon: src/qt/res/icons/connect*.png, src/qt/res/icons/synced.png, src/qt/res/icons/lock_*.png
 Icon Pack: Human-O2
 Designer: schollidesign
 License: GNU/GPL

src/qt/bitcoin.qrc

@@ -34,6 +34,8 @@
         <file alias="tx_input">res/icons/tx_input.png</file>
         <file alias="tx_output">res/icons/tx_output.png</file>
         <file alias="tx_inout">res/icons/tx_inout.png</file>
+        <file alias="lock_closed">res/icons/lock_closed.png</file>
+        <file alias="lock_open">res/icons/lock_open.png</file>
     </qresource>
     <qresource prefix="/images">
         <file alias="about">res/images/about.png</file>

src/qt/bitcoingui.cpp

@@ -18,6 +18,7 @@
 #include "transactionview.h"
 #include "overviewpage.h"
 #include "bitcoinunits.h"
+#include "guiconstants.h"
 
 #include <QApplication>
 #include <QMainWindow>
@@ -118,9 +119,12 @@ BitcoinGUI::BitcoinGUI(QWidget *parent):
     QHBoxLayout *frameBlocksLayout = new QHBoxLayout(frameBlocks);
     frameBlocksLayout->setContentsMargins(3,0,3,0);
     frameBlocksLayout->setSpacing(3);
+    labelEncryptionIcon = new QLabel();
     labelConnectionsIcon = new QLabel();
     labelBlocksIcon = new QLabel();
     frameBlocksLayout->addStretch();
+    frameBlocksLayout->addWidget(labelEncryptionIcon);
+    frameBlocksLayout->addStretch();
     frameBlocksLayout->addWidget(labelConnectionsIcon);
     frameBlocksLayout->addStretch();
     frameBlocksLayout->addWidget(labelBlocksIcon);
@@ -244,6 +248,9 @@ void BitcoinGUI::setWalletModel(WalletModel *walletModel)
     receiveCoinsPage->setModel(walletModel->getAddressTableModel());
     sendCoinsPage->setModel(walletModel);
 
+    setEncryptionStatus(walletModel->getEncryptionStatus());
+    connect(walletModel, SIGNAL(encryptionStatusChanged(int)), this, SLOT(setEncryptionStatus(int)));
+
     // Balloon popup for new transaction
     connect(walletModel->getTransactionTableModel(), SIGNAL(rowsInserted(QModelIndex,int,int)),
             this, SLOT(incomingTransaction(QModelIndex,int,int)));
@@ -300,7 +307,7 @@ void BitcoinGUI::setNumConnections(int count)
     case 7: case 8: case 9: icon = ":/icons/connect_3"; break;
     default: icon = ":/icons/connect_4"; break;
     }
-    labelConnectionsIcon->setPixmap(QIcon(icon).pixmap(16,16));
+    labelConnectionsIcon->setPixmap(QIcon(icon).pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
     labelConnectionsIcon->setToolTip(tr("%n active connection(s) to Bitcoin network", "", count));
 }
 
@@ -351,7 +358,7 @@ void BitcoinGUI::setNumBlocks(int count)
     if(secs < 30*60)
     {
         tooltip = tr("Up to date") + QString("\n") + tooltip;
-        labelBlocksIcon->setPixmap(QIcon(":/icons/synced").pixmap(16,16));
+        labelBlocksIcon->setPixmap(QIcon(":/icons/synced").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
     }
     else
     {
@@ -531,3 +538,22 @@ void BitcoinGUI::dropEvent(QDropEvent *event)
     event->acceptProposedAction();
 }
 
+void BitcoinGUI::setEncryptionStatus(int status)
+{
+    switch(status)
+    {
+    case WalletModel::Unencrypted:
+        labelEncryptionIcon->hide();
+        break;
+    case WalletModel::Unlocked:
+        labelEncryptionIcon->show();
+        labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_open").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
+        labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>unlocked</b>"));
+        break;
+    case WalletModel::Locked:
+        labelEncryptionIcon->show();
+        labelEncryptionIcon->setPixmap(QIcon(":/icons/lock_closed").pixmap(STATUSBAR_ICONSIZE,STATUSBAR_ICONSIZE));
+        labelEncryptionIcon->setToolTip(tr("Wallet is <b>encrypted</b> and currently <b>locked</b>"));
+        break;
+    }
+}

src/qt/bitcoingui.h

@@ -57,6 +57,7 @@ private:
     AddressBookPage *receiveCoinsPage;
     SendCoinsDialog *sendCoinsPage;
 
+    QLabel *labelEncryptionIcon;
     QLabel *labelConnectionsIcon;
     QLabel *labelBlocksIcon;
     QLabel *progressBarLabel;
@@ -85,6 +86,8 @@ private:
 public slots:
     void setNumConnections(int count);
     void setNumBlocks(int count);
+    void setEncryptionStatus(int status);
+
     void error(const QString &title, const QString &message);
     /* It is currently not possible to pass a return value to another thread through
        BlockingQueuedConnection, so use an indirected pointer.

src/qt/guiconstants.h

@@ -1,9 +1,12 @@
 #ifndef GUICONSTANTS_H
 #define GUICONSTANTS_H
 
-/* milliseconds between model updates */
+/* Milliseconds between model updates */
 static const int MODEL_UPDATE_DELAY = 500;
 
+/* Size of icons in status bar */
+static const int STATUSBAR_ICONSIZE = 16;
+
 /* Invalid field background style */
 #define STYLE_INVALID "background:#FF8080"
 

src/qt/walletmodel.cpp

@@ -12,7 +12,8 @@
 WalletModel::WalletModel(CWallet *wallet, OptionsModel *optionsModel, QObject *parent) :
     QObject(parent), wallet(wallet), optionsModel(optionsModel), addressTableModel(0),
     transactionTableModel(0),
-    cachedBalance(0), cachedUnconfirmedBalance(0), cachedNumTransactions(0)
+    cachedBalance(0), cachedUnconfirmedBalance(0), cachedNumTransactions(0),
+    cachedEncryptionStatus(Unencrypted)
 {
     // Until signal notifications is built into the bitcoin core,
     //  simply update everything after polling using a timer.
@@ -49,6 +50,7 @@ void WalletModel::update()
     qint64 newBalance = getBalance();
     qint64 newUnconfirmedBalance = getUnconfirmedBalance();
     int newNumTransactions = getNumTransactions();
+    EncryptionStatus newEncryptionStatus = getEncryptionStatus();
 
     if(cachedBalance != newBalance || cachedUnconfirmedBalance != newUnconfirmedBalance)
         emit balanceChanged(newBalance, newUnconfirmedBalance);
@@ -56,6 +58,9 @@ void WalletModel::update()
     if(cachedNumTransactions != newNumTransactions)
         emit numTransactionsChanged(newNumTransactions);
 
+    if(cachedEncryptionStatus != newEncryptionStatus)
+        emit encryptionStatusChanged(newEncryptionStatus);
+
     cachedBalance = newBalance;
     cachedUnconfirmedBalance = newUnconfirmedBalance;
     cachedNumTransactions = newNumTransactions;
@@ -179,4 +184,18 @@ TransactionTableModel *WalletModel::getTransactionTableModel()
     return transactionTableModel;
 }
 
-
+WalletModel::EncryptionStatus WalletModel::getEncryptionStatus() const
+{
+    if(!wallet->IsCrypted())
+    {
+        return Unencrypted;
+    }
+    else if(wallet->IsLocked())
+    {
+        return Locked;
+    }
+    else
+    {
+        return Unlocked;
+    }
+}

src/qt/walletmodel.h

@@ -36,6 +36,13 @@ public:
         MiscError
     };
 
+    enum EncryptionStatus
+    {
+        Unencrypted,  // !wallet->IsCrypted()
+        Locked,       // wallet->IsCrypted() && wallet->IsLocked()
+        Unlocked      // wallet->IsCrypted() && !wallet->IsLocked()
+    };
+
     OptionsModel *getOptionsModel();
     AddressTableModel *getAddressTableModel();
     TransactionTableModel *getTransactionTableModel();
@@ -43,6 +50,9 @@ public:
     qint64 getBalance() const;
     qint64 getUnconfirmedBalance() const;
     int getNumTransactions() const;
+    EncryptionStatus getEncryptionStatus() const;
+
+    bool isEncrypted() const;
 
     // Check address for validity
     bool validateAddress(const QString &address);
@@ -74,10 +84,12 @@ private:
     qint64 cachedBalance;
     qint64 cachedUnconfirmedBalance;
     qint64 cachedNumTransactions;
+    EncryptionStatus cachedEncryptionStatus;
 
 signals:
     void balanceChanged(qint64 balance, qint64 unconfirmedBalance);
     void numTransactionsChanged(int count);
+    void encryptionStatusChanged(int status);
 
     // Asynchronous error notification
     void error(const QString &title, const QString &message);