Developer Documentation
codeeditor.hh
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49 
50 #ifndef CODEEDITORWIDGET_HH
51 #define CODEEDITORWIDGET_HH
52 
53 #include <QPlainTextEdit>
54 #include <QObject>
55 
56 class QPaintEvent;
57 class QResizeEvent;
58 class QSize;
59 class QWidget;
60 
61 class LineNumberArea;
62 
63 
64 class CodeEditorWidget : public QPlainTextEdit
65 {
66  Q_OBJECT
67 
68  public:
69  CodeEditorWidget(QWidget *parent = 0);
70 
71  void lineNumberAreaPaintEvent(QPaintEvent *event);
72  int lineNumberAreaWidth();
73 
74  protected:
75  void resizeEvent(QResizeEvent *event);
76 
77  public:
78  void highLightErrorLine(int _line);
79 
80  private slots:
81  void updateLineNumberAreaWidth(int newBlockCount);
82  void highlightCurrentLine();
83  void updateLineNumberArea(const QRect &, int);
84 
85  private:
86  QWidget *lineNumberArea;
87 };
88 
89 
90 class LineNumberArea : public QWidget
91 {
92  public:
93  LineNumberArea(CodeEditorWidget *editor) : QWidget(editor) {
94  codeEditor = editor;
95  }
96 
97  QSize sizeHint() const {
98  return QSize(codeEditor->lineNumberAreaWidth(), 0);
99  }
100 
101  protected:
102  void paintEvent(QPaintEvent *event) {
103  codeEditor->lineNumberAreaPaintEvent(event);
104  }
105 
106  private:
107  CodeEditorWidget *codeEditor;
108 };
109 
110 
111 #endif