utils/themeeditor/codeeditor.h

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  10  * This file has been copied from Nokia's Qt Examples, with minor modifications
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  14  ****************************************************************************
  15 **
  16 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  17 ** All rights reserved.
  18 ** Contact: Nokia Corporation (qt-info@nokia.com)
  19 **
  20 ** This file is part of the examples of the Qt Toolkit.
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  22 ** GNU Lesser General Public License Usage
  23 ** Alternatively, this file may be used under the terms of the GNU Lesser
  24 ** General Public License version 2.1 as published by the Free Software
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  30 ** In addition, as a special exception, Nokia gives you certain additional
  31 ** rights.  These rights are described in the Nokia Qt LGPL Exception
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  35
  36 #ifndef CODEEDITOR_H
  37 #define CODEEDITOR_H
  38
  39 #include <QPlainTextEdit>
  40 #include <QObject>
  41
  42 QT_BEGIN_NAMESPACE
  43 class QPaintEvent;
  44 class QResizeEvent;
  45 class QSize;
  46 class QWidget;
  47 QT_END_NAMESPACE
  48
  49 class LineNumberArea;
  50
  51 //![codeeditordefinition]
  52
  53 class CodeEditor : public QPlainTextEdit
  54 {
  55     Q_OBJECT
  56
  57 public:
  58     CodeEditor(QWidget *parent = 0);
  59
  60     void lineNumberAreaPaintEvent(QPaintEvent *event);
  61     int lineNumberAreaWidth();
  62     void addError(int line){ errors.append(line); }
  63     void clearErrors(){ errors.clear(); }
  64     void setErrorColor(QColor color){ errorColor = color; }
  65
  66 protected:
  67     void resizeEvent(QResizeEvent *event);
  68
  69 private slots:
  70     void updateLineNumberAreaWidth(int newBlockCount);
  71     void updateLineNumberArea(const QRect &, int);
  72
  73 private:
  74     QWidget *lineNumberArea;
  75     QList<int> errors;
  76     QColor errorColor;
  77 };
  78
  79 //![codeeditordefinition]
  80 //![extraarea]
  81
  82 class LineNumberArea : public QWidget
  83 {
  84 public:
  85     LineNumberArea(CodeEditor *editor) : QWidget(editor) {
  86         codeEditor = editor;
  87     }
  88
  89     QSize sizeHint() const {
  90         return QSize(codeEditor->lineNumberAreaWidth(), 0);
  91     }
  92
  93 protected:
  94     void paintEvent(QPaintEvent *event) {
  95         codeEditor->lineNumberAreaPaintEvent(event);
  96     }
  97
  98 private:
  99     CodeEditor *codeEditor;
 100 };
 101
 102 //![extraarea]
 103
 104 #endif