code_app/app/scanner/hg_settingdialog.h

#ifndef HG_SETTING_DIALOG_H
#define HG_SETTING_DIALOG_H

#include <QtWidgets>
#include <QSettings>
#include <algorithm>
#include "sane/sane_ex.h"
#include "config.h"

class hg_settingdialog : public QDialog
{
    Q_OBJECT

    DEVCFG* schemes_;
    int     cur_ind_;   // [0, scheme size - 2] will be replaced when click 'OK' button, if want to add new item, set it to -1; add ONE on it when accept source

    typedef struct _changed_opt
    {
        int         opt;
        QVariant    val;

        bool operator==(const int& ind)
        {
            return opt == ind;
        }
    }CHANGEDOPT;
    std::vector<CHANGEDOPT> default_vals_;  // values which changed
    std::vector<CHANGEDOPT> init_vals_;     // values when initialize controls
    std::vector<CHANGEDOPT> changed_opts_;  // values which changed
    int                     changed_count_;
    bool                    save_;
    bool                    clicked_gamma_;
    config*                 cfg_file_;

    void refresh_control_value(int op_id);
    bool is_covered(std::vector<OPTVAL>& org, std::vector<OPTVAL>& now);    // if all options in org are inclued in now, then return true
    void on_select_scheme(int scheme_ind, bool apply_to_dev = true);
    QString gen_gamma_file_path(void);

    QMenu       *top_menu_;
    QLineEdit   *edit_name_;
    QPushButton *rename_;
    QPushButton *apply_;
    QPushButton *del_this_;
    QPushButton *del_all_;
    QLabel      *custom_area_lable_;
    QPushButton *btn_cut_area_;
    QPushButton *btn_gamma_;
    QTextEdit   *sketch_;
    void create_scheme_management_ui(QVBoxLayout* layout);
    QString find_current_scheme_menu(int *scheme_id = nullptr);

    static std::string  property_combox_data_type_;
    enum _cbox_type
    {
        COMBO_VAL_STRING = 0,
        COMBO_VAL_INT,
        COMBO_VAL_FLOAT,
    };

public:
    explicit hg_settingdialog(void *handle, QWidget *parent = nullptr,
                              DEVCFG* cfg = nullptr);
    ~hg_settingdialog();

public:
    void initUi();
    void updateOpt();
    void createUI();
    void updateUIStatus();
    QVector<QWidget*> find_control(int opt_num);
    void keyPressEvent(QKeyEvent *e);
    int get_changed_items(void);
    void set_config_file(config* cfg);

private:
    void *m_handle;

private:
    QString m_qstrFileName;
    QSettings *m_configIniWrite;
    QSettings *m_configIniRead;

private:
    void iniWrite(QString title, int id, QVariant value);
    void iniRead(QString title, int id, QWidget *w);
    QString md5(QString key);
    const void* find_option_description(int id);    // return const SANE_Option_Descriptor* pointer
    const void* find_option_description(const std::string& title, int* id);    // return const SANE_Option_Descriptor* pointer
    QVariant find_default_value(int id);
    bool is_equal_default_value(const CHANGEDOPT& opt, int type);
    bool set_opt_value_for_OPTVAL(QVariant val, int type, OPTVAL* ov);

    virtual void closeEvent(QCloseEvent* e);
    int find_covered_scheme(OPTSCHEME& scheme);   // return [1, schemes_.size()]
    void save_scheme(void);
    void cancel_setting(void);
    static int find_opt_setting(const char* name, const std::vector<OPTVAL>& opts);
    int apply_setting(const SANE_Option_Descriptor* desc, int opt_ind, OPTVAL* val);
    int apply_settings(OPTSCHEME* scheme);
    void record_changed_option(int opt, const QVariant& var);
    void getAppVersion();

private:
    QVector<QPair<QPair<int, QVariant>, QString>> m_list_IdValueTitle;
    QVector<QPair<const void*, QVariant>> m_list_defaultOptions;    // default values of device
    QVector<QPair<QObject*, QObject*>> m_list_sliderSpinbox;
    QVector<QPair<int, const void*>> m_list_getOpt;
    QVector<std::string> m_list_deviceNames;
    QVector<QWidget*> m_list_widgets;

private slots:
    void slot_checkedClicked();
    void slot_sliderClicked(int value);
    void slot_spinBoxClicked(int value);
    void slot_doubleSpinboxClicked(double value);
    void slot_string_list_comboBoxClicked();
    void slot_pushButtonClicked();
    void slot_cutButtonClicked();
    void slot_gammaButtonClicked();
    void slot_word_list_comboBoxClicked(int value);
    void slot_lineEditInput();
    void slot_buttonOkClicked();
    void slot_buttonCancelClicked();
    void slot_pushButton_scheme_management(void);
    void on_current_scheme_changed(void);

private:
    int m_dpiId;
    int m_dpiValue;
    int m_paperSizeId;
    QString m_paperSizeValue;
    int m_cutLeftId;
    int m_cutTopId;
    int m_cutRightId;
    int m_cutBottomId;
    double m_cutWidth; // 单位是毫米
    double m_cutHeight; // 单位是毫米
    double m_cutLeftValue; // 单位是毫米
    double m_cutTopValue; // 单位是毫米
    double m_cutRightValue; // 单位是毫米
    double m_cutBottomValue; // 单位是毫米

    int m_colorModeId;
    QString m_colorModeValue;
    SANE_Gamma m_gammaData;
    QComboBox       *comb_;
};

#endif // HG_SETTING_DIALOG_H