Add ANSI color rendering and terminal themes

src/terminal_view.h

@@ -1,20 +1,56 @@
 #ifndef ORBITHUB_TERMINAL_VIEW_H
 #define ORBITHUB_TERMINAL_VIEW_H
 
-#include <QPlainTextEdit>
+#include <QTextEdit>
 
-class TerminalView : public QPlainTextEdit
+#include <array>
+
+class QKeyEvent;
+
+class TerminalView : public QTextEdit
 {
     Q_OBJECT
 
 public:
     explicit TerminalView(QWidget* parent = nullptr);
 
+    static QStringList themeNames();
+    void setThemeName(const QString& themeName);
+    void appendTerminalData(const QString& data);
+
 signals:
     void inputGenerated(const QString& input);
 
 protected:
     void keyPressEvent(QKeyEvent* event) override;
+
+private:
+    struct ThemePalette {
+        QString name;
+        QColor background;
+        QColor foreground;
+        std::array<QColor, 8> normal;
+        std::array<QColor, 8> bright;
+    };
+
+    ThemePalette m_palette;
+    QString m_pendingEscape;
+    bool m_bold;
+    bool m_hasFgColor;
+    bool m_hasBgColor;
+    QColor m_fgColor;
+    QColor m_bgColor;
+    QTextCharFormat m_currentFormat;
+
+    static ThemePalette paletteByName(const QString& themeName);
+    static QColor colorFrom256Index(int index);
+
+    void applyThemePalette(const ThemePalette& palette);
+    void applyCurrentFormat();
+    void resetSgrState();
+    void handleSgrSequence(const QString& params);
+    void appendTextChunk(const QString& text);
+    QColor paletteColor(bool background, int index, bool bright) const;
 };
 
 #endif