SourceTextEdit.h++

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#ifndef __libquark_gui_SourceTextEdit_hxx
#define __libquark_gui_SourceTextEdit_hxx

#include <QPlainTextEdit>
#include <QRect>
#include <QResizeEvent>
#include <QSyntaxHighlighter>

#include <quark/Quark.h++>

namespace quark {
namespace gui {

class LIBQUARK_API SourceTextEdit : public QPlainTextEdit
{
  Q_OBJECT;

  public:

  explicit SourceTextEdit(QWidget *parent = NULL);

  virtual ~SourceTextEdit();

  void setSyntaxHighlighter(QSharedPointer<QSyntaxHighlighter> highlighter);

  public slots:

  void setHighlightingEnabled(bool enabled);

  protected:

  void resizeEvent(QResizeEvent *event);

  private slots:

  void updateMarginWidth();
  void updateMargin(const QRect &rect, int dy);

  private:

  class MarginWidget;
  friend class MarginWidget;

  int marginWidth() const;
  void paintMargin(QPaintEvent *event);

  MarginWidget *_marginWidget;
  QSharedPointer<QSyntaxHighlighter> _highlighter;
  bool _highlightingOn;

  static const int MARGIN_GAP;
};

} // namespace gui
} // namespace quark

#endif  // __libquark_gui_SourceTextEdit_hxx