PillRenderer.h

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#ifndef PILLRENDERER_H
#define PILLRENDERER_H
 
#include <QObject>
#include <QString>
#include <QTextBlockFormat>
 
class QHelpEvent;
class QPaintEvent;
class DirectedMessageHighlighter;
class TransmitTextEdit;
struct PillColorScheme;

class PillRenderer : public QObject {
    Q_OBJECT
 
  public:
    // Pill geometry constants — used by paintPills() and applyPillHighlighting().
    static constexpr qreal PillHPad      = 8.0;   
    static constexpr qreal PillVPad      = 3.0;   
    static constexpr qreal PillMaxRadius = 11.0;   
    static constexpr qreal PillMinRadius = 7.0;    
    static constexpr qreal PillMinHPad   = 5.0;   
    static constexpr qreal PillMinGap    = 5.0;    

    explicit PillRenderer(TransmitTextEdit *host, QObject *parent = nullptr);

    void paintPills(QPaintEvent *event);

    bool handleTooltip(QHelpEvent *helpEvent);

    void applyPillHighlighting();
 
    void setEnabled(bool enabled);
    bool isEnabled() const;
    void setPillColors(const PillColorScheme &scheme);
    void setSelectedCallsign(const QString &callsign);
 
  private:
    void refreshPillState();
    void applyLineHeight(bool enabled) const;
    void clearPillLetterSpacing() const;
    void applyPillLetterSpacing() const;
 
    TransmitTextEdit *m_host;
    DirectedMessageHighlighter *m_highlighter;
    qreal m_defaultDocumentMargin = 0.0;
    QTextBlockFormat m_defaultBlockFormat;
    bool m_enabled = true;
    QString m_selectedCallsign;
};
 
#endif // PILLRENDERER_H