51 lines
1.0 KiB
C++
51 lines
1.0 KiB
C++
#ifndef LINENUMBERTEXTEDITOR_H
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#define LINENUMBERTEXTEDITOR_H
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#include <QPlainTextEdit>
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class LineNumberTextEditor : public QPlainTextEdit
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{
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Q_OBJECT
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public:
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LineNumberTextEditor(QWidget *parent = nullptr);
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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) override;
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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 &rect, int dy);
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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(LineNumberTextEditor *editor) : QWidget(editor), mParentEditor(editor)
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{}
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QSize sizeHint() const override
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{
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return QSize(mParentEditor->lineNumberAreaWidth(), 0);
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}
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protected:
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void paintEvent(QPaintEvent *event) override
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{
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mParentEditor->lineNumberAreaPaintEvent(event);
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}
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private:
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LineNumberTextEditor *mParentEditor;
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};
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#endif // LINENUMBERTEXTEDITOR_H
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