json_data_source_view.h

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#pragma once
 
#include <config.h>
 
#include "base_data_source_view.h"
 
#include <ui/qt/utils/field_information.h>
 
#include <QAbstractScrollArea>
#include <QTextLayout>
 
class QTextLayout;

struct TextLine {
    QString line;             
    QList<QTextLayout::FormatRange>   fmt_list; 
    int highlight_start;  
    int highlight_length; 
    int kv_start;         
    int kv_length;        
};

struct TextBlock {
    QList<TextLine> text_lines; 
};

class JsonDataSourceView : public BaseDataSourceView
{
    Q_OBJECT
public:
    explicit JsonDataSourceView(const QByteArray &data, proto_node *root_node, QWidget *parent = nullptr);

    ~JsonDataSourceView();
 
signals:
    void fieldSelected(FieldInformation *finfo);

    void fieldHighlight(FieldInformation *finfo);
 
public slots:
    void setMonospaceFont(const QFont &mono_font) override;

    void markField(int start, int length, bool scroll_to = true, bool hover = false) override;

    void unmarkField() override;

    void markProtocol(int start, int length)  override{Q_UNUSED(start) Q_UNUSED(length)}

    void markAppendix(int start, int length)  override{Q_UNUSED(start) Q_UNUSED(length)}
 
protected:
    // virtual bool event(QEvent *event);

    virtual void paintEvent(QPaintEvent *) override;

    virtual void resizeEvent(QResizeEvent *) override;

    virtual void showEvent(QShowEvent *) override;

    virtual void keyPressEvent(QKeyEvent *) override;

    virtual void mousePressEvent (QMouseEvent *event) override;

    virtual void mouseMoveEvent (QMouseEvent * event) override;

    virtual void leaveEvent(QEvent *event) override;
 
private:
    void updateLayoutMetrics();

    int stringWidth(const QString &line);

    void updateScrollbars();

    void addTextLine(TextBlock &text_block, TextLine &text_line, const QString &next_line = QString());

    bool prettyPrintPlain(const char *in_buf, QString &out_str);

    bool addJsonObject();

    int offsetChars(bool include_pad = true);

    int offsetPixels();

    const TextLine *findTextLine(int line);

    QTextLayout *layout_;

    QList<TextBlock> text_blocks_;

    bool layout_dirty_;

    bool show_offset_;          // Should we show the byte offset?

    int em_width_;              // Single character width and text margin. NOTE: Use fontMetrics::width for multiple characters.

    int line_height_;           // Font line spacing

    qsizetype max_line_length_; // In characters

    proto_node *root_node_;

    const TextLine *selected_line_;

    const TextLine *hovered_line_;
};