90 lines
1.9 KiB
C++
90 lines
1.9 KiB
C++
#ifndef CODEEDITOR_H
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#define CODEEDITOR_H
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#include <QSyntaxHighlighter>
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#include <QPlainTextEdit>
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#include <QObject>
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#include <QRegularExpression>
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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 Highlighter : public QSyntaxHighlighter {
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Q_OBJECT
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public:
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explicit Highlighter(QTextDocument *parent);
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protected:
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void highlightBlock(const QString &text) override;
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private:
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struct HighlightingRule {
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QRegularExpression pattern;
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QTextCharFormat format;
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};
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QVector<HighlightingRule> highlightingRules;
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QRegularExpression commentStartExpression;
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QRegularExpression commentEndExpression;
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QTextCharFormat keywordFormat;
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QTextCharFormat classFormat;
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QTextCharFormat singleLineCommentFormat;
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QTextCharFormat multiLineCommentFormat;
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QTextCharFormat quotationFormat;
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QTextCharFormat functionFormat;
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};
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class CodeEditor : public QPlainTextEdit {
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Q_OBJECT
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public:
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explicit CodeEditor(QWidget *parent);
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void lineNumberAreaPaintEvent(QPaintEvent *event);
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int lineNumberAreaWidth();
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void setErrorLine(int errorLine);
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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 &, int);
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private:
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QWidget *lineNumberArea;
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Highlighter *highlighter;
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int mErrorPosition;
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};
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class LineNumberArea : public QWidget {
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public:
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explicit LineNumberArea(CodeEditor *editor) : QWidget(editor) {
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codeEditor = editor;
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}
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QSize sizeHint() const override {
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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) override {
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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 // CODEEDITOR_H
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