codeeditor.hh

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/*===========================================================================*\
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*   $Revision$                                                       *
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\*===========================================================================*/

#ifndef CODEEDITORWIDGET_HH
#define CODEEDITORWIDGET_HH

#include <QPlainTextEdit>
#include <QObject>

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

class LineNumberArea;


class CodeEditorWidget : public QPlainTextEdit
{
    Q_OBJECT

  public:
    CodeEditorWidget(QWidget *parent = 0);

    void lineNumberAreaPaintEvent(QPaintEvent *event);
    int lineNumberAreaWidth();

  protected:
    void resizeEvent(QResizeEvent *event);

  public:
    void highLightErrorLine(int _line);

  private slots:
    void updateLineNumberAreaWidth(int newBlockCount);
    void highlightCurrentLine();
    void updateLineNumberArea(const QRect &, int);

  private:
    QWidget *lineNumberArea;
};


class LineNumberArea : public QWidget
{
  public:
    LineNumberArea(CodeEditorWidget *editor) : QWidget(editor) {
      codeEditor = editor;
    }

    QSize sizeHint() const {
      return QSize(codeEditor->lineNumberAreaWidth(), 0);
    }

  protected:
    void paintEvent(QPaintEvent *event) {
      codeEditor->lineNumberAreaPaintEvent(event);
    }

  private:
    CodeEditorWidget *codeEditor;
};


#endif