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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#ifndef CODEEDITOR_H
#define CODEEDITOR_H
#include <QPlainTextEdit>
QT_BEGIN_NAMESPACE
class QPaintEvent;
class QResizeEvent;
class QSize;
class QWidget;
QT_END_NAMESPACE
class LineNumberArea;
//![codeeditordefinition]
class CodeEditor : public QPlainTextEdit
{
Q_OBJECT
public:
CodeEditor(QWidget *parent = nullptr);
void lineNumberAreaPaintEvent(QPaintEvent *event);
int lineNumberAreaWidth();
protected:
void resizeEvent(QResizeEvent *event) override;
private slots:
void updateLineNumberAreaWidth(int newBlockCount);
void highlightCurrentLine();
void updateLineNumberArea(const QRect &rect, int dy);
private:
QWidget *lineNumberArea;
};
//![codeeditordefinition]
//![extraarea]
class LineNumberArea : public QWidget
{
public:
LineNumberArea(CodeEditor *editor) : QWidget(editor), codeEditor(editor)
{}
QSize sizeHint() const override
{
return QSize(codeEditor->lineNumberAreaWidth(), 0);
}
protected:
void paintEvent(QPaintEvent *event) override
{
codeEditor->lineNumberAreaPaintEvent(event);
}
private:
CodeEditor *codeEditor;
};
//![extraarea]
#endif
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