textEditorWidget.h

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// -*- Mode: C++; tab-width: 2; -*-
// vi: set ts=2:
//

#ifndef BALL_VIEW_WIDGETS_TEXTEDITORWIDGET_H
#define BALL_VIEW_WIDGETS_TEXTEDITORWIDGET_H

#ifndef BALL_VIEW_KERNEL_COMMON_H
# include <BALL/VIEW/KERNEL/common.h>
#endif

#ifndef BALL_VIEW_WIDGETS_DOCKWIDGET_H
# include <BALL/VIEW/WIDGETS/dockWidget.h>
#endif

#include <QPlainTextEdit>
#include <QObject>

class QPaintEvent;
class QResizeEvent;
class QSize;
class QWidget;

namespace BALL
{
  namespace VIEW
  {
    class BALL_VIEW_EXPORT TextEditorWidget
      : public QPlainTextEdit
    {
      Q_OBJECT

      public:
      
        TextEditorWidget(QWidget *parent = 0);

        void lineNumbersPaintEvent(QPaintEvent *event);
        int  lineNumbersWidth();

      protected:
        
        class LineNumbers 
          : public QWidget
        {
          public:
            LineNumbers(TextEditorWidget *editor); 
            QSize sizeHint() const;

          protected:
            void paintEvent(QPaintEvent *event);
          
          private:
            TextEditorWidget *editor_;
        };
       
       void resizeEvent(QResizeEvent *event);

      private slots:
        void updateLineNumbersWidth(int newBlockCount);
        void highlightCurrentLine();
        void updateLineNumbers(const QRect &, int);

      private:
        QWidget *line_numbers_;
    };

  }
}

#endif // BALL_VIEW_WIDGETS_TEXTEDITORWIDGET_H