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100 lines
3.1 KiB
100 lines
3.1 KiB
13 years ago
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef CODEEDITOR_H
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#define CODEEDITOR_H
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#include <QPlainTextEdit>
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#include <QObject>
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class QPaintEvent;
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class QResizeEvent;
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class QSize;
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class QWidget;
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class LineNumberArea;
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class CodeEditor : public QPlainTextEdit
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{
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Q_OBJECT
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public:
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CodeEditor(QWidget *parent = 0);
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void lineNumberAreaPaintEvent(QPaintEvent *event);
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int lineNumberAreaWidth();
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protected:
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void resizeEvent(QResizeEvent *event);
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private slots:
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void updateLineNumberAreaWidth(int newBlockCount);
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void highlightCurrentLine();
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void updateLineNumberArea(const QRect &, int);
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private:
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QWidget *lineNumberArea;
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};
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class LineNumberArea : public QWidget
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{
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public:
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LineNumberArea(CodeEditor *editor) : QWidget(editor) {
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codeEditor = editor;
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}
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QSize sizeHint() const {
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return QSize(codeEditor->lineNumberAreaWidth(), 0);
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}
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protected:
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void paintEvent(QPaintEvent *event) {
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codeEditor->lineNumberAreaPaintEvent(event);
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}
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private:
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CodeEditor *codeEditor;
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};
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#endif
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