[qt] Use fixed pitch font for the rpc console

Also:
* Preserve white space
* Make fixed font as large as default font

src/qt/addresstablemodel.cpp

@@ -218,7 +218,7 @@ QVariant AddressTableModel::data(const QModelIndex &index, int role) const
         QFont font;
         if(index.column() == Address)
         {
-            font = GUIUtil::bitcoinAddressFont();
+            font = GUIUtil::fixedPitchFont();
         }
         return font;
     }

src/qt/guiutil.cpp

@@ -88,7 +88,7 @@ QString dateTimeStr(qint64 nTime)
     return dateTimeStr(QDateTime::fromTime_t((qint32)nTime));
 }
 
-QFont bitcoinAddressFont()
+QFont fixedPitchFont()
 {
     QFont font("Monospace");
 #if QT_VERSION >= 0x040800
@@ -103,7 +103,7 @@ void setupAddressWidget(QValidatedLineEdit *widget, QWidget *parent)
 {
     parent->setFocusProxy(widget);
 
-    widget->setFont(bitcoinAddressFont());
+    widget->setFont(fixedPitchFont());
 #if QT_VERSION >= 0x040700
     // We don't want translators to use own addresses in translations
     // and this is the only place, where this address is supplied.

src/qt/guiutil.h

@@ -37,8 +37,8 @@ namespace GUIUtil
     QString dateTimeStr(const QDateTime &datetime);
     QString dateTimeStr(qint64 nTime);
 
-    // Render Bitcoin addresses in monospace font
-    QFont bitcoinAddressFont();
+    // Return a monospace font
+    QFont fixedPitchFont();
 
     // Set up widgets for address and amounts
     void setupAddressWidget(QValidatedLineEdit *widget, QWidget *parent);

src/qt/rpcconsole.cpp

@@ -462,13 +462,19 @@ void RPCConsole::clear()
     }
 
     // Set default style sheet
+    QFontInfo fixedFontInfo(GUIUtil::fixedPitchFont());
+    // Try to make font equally large on different OS.
+    QString ptSize = QString("%1pt").arg(QFontInfo(QFont()).pointSize());
     ui->messagesWidget->document()->setDefaultStyleSheet(
+        QString(
                 "table { }"
                 "td.time { color: #808080; padding-top: 3px; } "
+                "td.message { font-family: %1; font-size: %2; white-space:pre-wrap; } "
                 "td.cmd-request { color: #006060; } "
                 "td.cmd-error { color: red; } "
                 "b { color: #006060; } "
-                );
+            ).arg(fixedFontInfo.family(), ptSize)
+        );
 
     message(CMD_REPLY, (tr("Welcome to the Bitcoin Core RPC console.") + "<br>" +
                         tr("Use up and down arrows to navigate history, and <b>Ctrl-L</b> to clear screen.") + "<br>" +
@@ -494,7 +500,7 @@ void RPCConsole::message(int category, const QString &message, bool html)
     if(html)
         out += message;
     else
-        out += GUIUtil::HtmlEscape(message, true);
+        out += GUIUtil::HtmlEscape(message, false);
     out += "</td></tr></table>";
     ui->messagesWidget->append(out);
 }
@@ -849,4 +855,4 @@ void RPCConsole::showOrHideBanTableIfRequired()
     bool visible = clientModel->getBanTableModel()->shouldShow();
     ui->banlistWidget->setVisible(visible);
     ui->banHeading->setVisible(visible);
-}
+}

src/qt/rpcconsole.h

@@ -71,6 +71,7 @@ private Q_SLOTS:
 
 public Q_SLOTS:
     void clear();
+    /** Append the message to the message widget */
     void message(int category, const QString &message, bool html = false);
     /** Set number of connections shown in the UI */
     void setNumConnections(int count);

src/qt/sendcoinsentry.cpp

@@ -40,7 +40,7 @@ SendCoinsEntry::SendCoinsEntry(const PlatformStyle *platformStyle, QWidget *pare
     // normal bitcoin address field
     GUIUtil::setupAddressWidget(ui->payTo, this);
     // just a label for displaying bitcoin address(es)
-    ui->payTo_is->setFont(GUIUtil::bitcoinAddressFont());
+    ui->payTo_is->setFont(GUIUtil::fixedPitchFont());
 
     // Connect signals
     connect(ui->payAmount, SIGNAL(valueChanged()), this, SIGNAL(payAmountChanged()));

src/qt/signverifymessagedialog.cpp

@@ -51,8 +51,8 @@ SignVerifyMessageDialog::SignVerifyMessageDialog(const PlatformStyle *platformSt
     ui->messageIn_VM->installEventFilter(this);
     ui->signatureIn_VM->installEventFilter(this);
 
-    ui->signatureOut_SM->setFont(GUIUtil::bitcoinAddressFont());
-    ui->signatureIn_VM->setFont(GUIUtil::bitcoinAddressFont());
+    ui->signatureOut_SM->setFont(GUIUtil::fixedPitchFont());
+    ui->signatureIn_VM->setFont(GUIUtil::fixedPitchFont());
 }
 
 SignVerifyMessageDialog::~SignVerifyMessageDialog()