Add ANSI color rendering and terminal themes

src/session_tab.cpp

@@ -4,6 +4,7 @@
 #include "terminal_view.h"
 
 #include <QClipboard>
+#include <QComboBox>
 #include <QDateTime>
 #include <QFileDialog>
 #include <QFileInfo>
@@ -16,7 +17,6 @@
 #include <QMessageBox>
 #include <QPlainTextEdit>
 #include <QPushButton>
-#include <QTextCursor>
 #include <QThread>
 #include <QToolButton>
 #include <QVBoxLayout>
@@ -38,6 +38,7 @@ SessionTab::SessionTab(const Profile& profile, QWidget* parent)
       m_reconnectButton(nullptr),
       m_copyErrorButton(nullptr),
       m_clearTerminalButton(nullptr),
+      m_themeSelector(nullptr),
       m_toggleDetailsButton(nullptr),
       m_toggleEventsButton(nullptr),
       m_detailsPanel(nullptr),
@@ -196,11 +197,7 @@ void SessionTab::onBackendOutputReceived(const QString& text)
         return;
     }
 
-    QTextCursor cursor = m_terminalOutput->textCursor();
-    cursor.movePosition(QTextCursor::End);
-    cursor.insertText(text);
-    m_terminalOutput->setTextCursor(cursor);
-    m_terminalOutput->ensureCursorVisible();
+    m_terminalOutput->appendTerminalData(text);
 }
 
 void SessionTab::onBackendHostKeyConfirmationRequested(const QString& prompt)
@@ -268,13 +265,17 @@ void SessionTab::setupUi()
 
     auto* terminalHeader = new QHBoxLayout();
     auto* terminalLabel = new QLabel(QStringLiteral("SSH Terminal"), this);
+    m_themeSelector = new QComboBox(this);
+    m_themeSelector->addItems(TerminalView::themeNames());
+    m_themeSelector->setCurrentText(QStringLiteral("Dark"));
     m_clearTerminalButton = new QPushButton(QStringLiteral("Clear"), this);
     terminalHeader->addWidget(terminalLabel);
     terminalHeader->addStretch();
+    terminalHeader->addWidget(new QLabel(QStringLiteral("Theme"), this));
+    terminalHeader->addWidget(m_themeSelector);
     terminalHeader->addWidget(m_clearTerminalButton);
 
     m_terminalOutput = new TerminalView(this);
-    m_terminalOutput->setMaximumBlockCount(4000);
     QFont terminalFont(QStringLiteral("Monospace"));
     terminalFont.setStyleHint(QFont::TypeWriter);
     m_terminalOutput->setFont(terminalFont);
@@ -338,6 +339,10 @@ void SessionTab::setupUi()
             &TerminalView::inputGenerated,
             this,
             [this](const QString& input) { emit requestInput(input); });
+    connect(m_themeSelector,
+            &QComboBox::currentTextChanged,
+            m_terminalOutput,
+            &TerminalView::setThemeName);
 }
 
 std::optional<SessionConnectOptions> SessionTab::buildConnectOptions()