theme_code_view.h

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#ifndef THEME_CODE_VIEW_H
#define THEME_CODE_VIEW_H
 
#include <QFont>
#include <QString>
#include <QVector>
#include <QWidget>
 
class QSyntaxHighlighter;
class ThemeCodeEdit;

enum class ThemeDiffKind { Equal, Changed, Added, Removed };

struct ThemeDiffLine
{
    ThemeDiffKind kind = ThemeDiffKind::Equal;
    QString text;
    int number = 0; // line number in the current text; 0 for removed lines
};

class ThemeCodeView : public QWidget
{
    Q_OBJECT
public:
    explicit ThemeCodeView(QWidget *parent = nullptr);
 
    void setTexts(const QString &compareText, const QString &currentText);
    void setViewFont(const QFont &monospace);
 
    int changedLines() const { return changed_lines_; }
    int addedLines() const { return added_lines_; }
    int removedLines() const { return removed_lines_; }

    void nextChange();
    void previousChange();

    QString currentText() const { return current_text_; }
 
signals:
    void countsChanged();
 
private:
    void applyColors();
    void rebuildSelections();
    void goToBlock(int block);
 
    ThemeCodeEdit *edit_;
    QSyntaxHighlighter *highlighter_ = nullptr;
    QVector<ThemeDiffLine> lines_;
    QVector<int> run_starts_;
    QString current_text_;
    int changed_lines_ = 0;
    int added_lines_ = 0;
    int removed_lines_ = 0;
};
 
#endif // THEME_CODE_VIEW_H