• Qt之在QML中使用QSortFilterProxyModel进行排序和过滤

    一.QSortFilterProxyModel

    QSortFilterProxyModel是model的代理，不能单独使用，真正的数据需要另外的一个model提供，它的功能是对被代理的model（source model）进行排序和过滤。所谓过滤，也就是说按照你输入的内容进行数据的筛选，因为其过滤功能是基于正则表达式的，所以功能强大。
    我们现从Qt自带的两个demo——basicsortfiltermodel和customsortfiltermodel来看看QSortFilterProxyModel的基本使用方法：


    proxyModel->setSourceModel(model)用于设置哪个model被代理
    proxyModel->setSortCaseSensitivity(Qt::CaseSensitive)用来设置排序时是否区分大小写
    proxyModel->setFilterKeyColumn(0)用来指定当前过滤的列，参数为列号
    proxyModel->setFilterRegExp(regExp)用于设置过滤时的筛选规则，参数类型为QRegExp，QRegExp的原型如下：

    1. explicit QRegExp(const QString &pattern, Qt::CaseSensitivity cs = Qt::CaseSensitive,
    2.                  PatternSyntax syntax = RegExp);

    第一个参数是表达式，第二个参数表示是否区分表达式中的大小写，第三个参数是enum类型，如下所示

    1. enum PatternSyntax {
    2.     RegExp,
    3.     Wildcard,
    4.     FixedString,
    5.     RegExp2,
    6.     WildcardUnix,
    7.     W3CXmlSchema11 };

    enum中罗列了正则表达式的几种类型。正则表达式自己有一套相对通用的语法，但是对于不同的语言环境（例如 Java、C# 和 Python），其具体定义可能会略有差别。这里我们使用的是Qt自己的正则表达式处理工具。第一个 QregExp::RegExp提供了最一般的正则表达式语法，但这个语法不支持贪婪限定符，这也是Qt 默认的规则。如果需要使用贪婪限定符，需要使用 QRegExp::RegExp2。第二个我们提供的是Unix shell常见的一种规则，使用通配符处理。第三个即固定表达式，也就是说基本上不使用正则表达式。demo中使用的就是前三种


    customsortfiltermodel中通过子类化QSortFilterProxyModel，重写其lessThan和filterAcceptsRow方法来实现自定义的排序和过滤，具体可参考customsortfiltermodel中MySortFilterProxyModel类的实现。需要注意的是，如果过滤方式改变了，比如从过滤第1列变成了过滤第2列，需要调用invalidateFilter()函数，使之前的过滤失效，激活当前过滤

    二.在QML中使用QSortFilterProxyModel

    1.source model使用QML内置model

    这里使用QML内置的ListModel，加上自定义的PageSortFilterProxyModel来实现翻页，效果如下所示

    一共有110个黑色方块，方块中显示其ID号，每次最多显示20个（pageSize），通过页面（pageIndex）的变化来过滤每次显示的方块，filterAcceptsRow如下：

    1. bool PageSortFilterProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
    2. {
    3.     Q_UNUSED(sourceParent)
    4.  
    5.     int min = m_pageSize * m_pageIndex;
    6.     int max = m_pageSize * m_pageIndex + m_pageSize;
    7.     return sourceRow >= min && sourceRow < max;
    8. }

    因为页码是变化的，因此每次设置完页码后都要调用invalidateFilter()

    1. void PageSortFilterProxyModel::setPageIndex(int index)
    2. {
    3.     m_pageIndex = index;
    4.     emit pageIndexChanged();
    5.  
    6.     invalidateFilter();
    7. }

    需要注意的是，这里必须重写QSortFilterProxyModel的roleNames()方法，否则在ListModel添加到PageSortFilterProxyModel后，ListModel中的元素就无法使用了，会报*** is not defined错误

    1. QHash<int, QByteArray> PageSortFilterProxyModel::roleNames() const
    2. {
    3.     return sourceModel()->roleNames();
    4. }

    完整源码如下：
    PageSortFilterProxyModel.h

    1. #ifndef PAGESORTFILTERPROXYMODEL_H
    2. #define PAGESORTFILTERPROXYMODEL_H
    3.  
    4. #include 
    5.  
    6. class PageSortFilterProxyModel: public QSortFilterProxyModel
    7. {
    8.     Q_OBJECT
    9.     Q_PROPERTY(int pageIndex READ pageIndex WRITE setPageIndex NOTIFY pageIndexChanged)
    10.     Q_PROPERTY(int pageSize READ pageSize WRITE setPageSize NOTIFY pageSizeChanged)
    11.     Q_PROPERTY(int sortOrder READ sortOrder WRITE setSortOrder NOTIFY sortOrderChanged)
    13. public:
    14.     PageSortFilterProxyModel(QObject *parent = nullptr);
    15.     ~PageSortFilterProxyModel();
    16.  
    17.     int pageSize() const;
    18.     void setPageSize(int size);
    19.  
    20.     int pageIndex() const;
    21.     void setPageIndex(int index);
    22.  
    23.     int sortOrder() const;
    24.     void setSortOrder(int order);
    25.  
    26. signals:
    27.     void pageIndexChanged();
    28.     void pageSizeChanged();
    29.     void sortOrderChanged();
    30.  
    31. protected:
    32.     QHash<int, QByteArray> roleNames() const override;
    33.     bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const override;
    34.     bool lessThan(const QModelIndex &left, const QModelIndex &right) const override;
    35.  
    36. private:
    37.     int m_pageIndex;
    38.     int m_pageSize;
    39.     int m_sortOrder = Qt::AscendingOrder;
    40. };
    41.  
    42. #endif // PAGESORTFILTERPROXYMODEL_H

    PageSortFilterProxyModel.cpp

    1. #include "PageSortFilterProxyModel.h"
    2. #include 
    3. PageSortFilterProxyModel::PageSortFilterProxyModel(QObject *parent)
    4.     : QSortFilterProxyModel (parent)
    5. {
    6.  
    7. }
    8.  
    9. PageSortFilterProxyModel::~PageSortFilterProxyModel()
    10. {
    11.  
    12. }
    13.  
    14. QHash<int, QByteArray> PageSortFilterProxyModel::roleNames() const
    15. {
    16.     return sourceModel()->roleNames();
    17. }
    18.  
    19. bool PageSortFilterProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
    20. {
    21.     Q_UNUSED(sourceParent)
    22.  
    23.     int min = m_pageSize * m_pageIndex;
    24.     int max = m_pageSize * m_pageIndex + m_pageSize;
    25.     return sourceRow >= min && sourceRow < max;
    26. }
    27.  
    28. bool PageSortFilterProxyModel::lessThan(const QModelIndex &left, const QModelIndex &right) const
    29. {
    30.     QVariant leftData = sourceModel()->data(left);
    31.     QVariant rightData = sourceModel()->data(right);
    32.  
    33.     return leftData.toInt()toInt();
    34.     // 改成return leftData.toInt()>rightData.toInt();可得到相反的结果.
    35.     // 这里其实直接调用父类的lessThan就行，上述代码中是为了演示自定义排序.
    36.     // return QSortFilterProxyModel::lessThan(left, right);
    37. }
    38.  
    39. int PageSortFilterProxyModel::pageSize() const
    40. {
    41.     return m_pageSize;
    42. }
    43.  
    44. void PageSortFilterProxyModel::setPageSize(int size)
    45. {
    46.     m_pageSize = size;
    47.     emit pageSizeChanged();
    48. }
    49.  
    50. int PageSortFilterProxyModel::pageIndex() const
    51. {
    52.     return m_pageIndex;
    53. }
    54.  
    55. void PageSortFilterProxyModel::setPageIndex(int index)
    56. {
    57.     m_pageIndex = index;
    58.     emit pageIndexChanged();
    59.  
    60.     invalidateFilter();
    61. }
    62.  
    63. int PageSortFilterProxyModel::sortOrder() const
    64. {
    65.     return m_sortOrder;
    66. }
    67.  
    68. void PageSortFilterProxyModel::setSortOrder(int order)
    69. {
    70.     m_sortOrder = order;
    71.     emit sortOrderChanged();
    72.  
    73.     sort(0,static_cast(order));
    74. }

    main.cpp

    1. #include 
    2. #include 
    3.  
    4. #include "PageSortFilterProxyModel.h"
    5.  
    6. int main(int argc, char *argv[])
    7. {
    8.     QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
    9.  
    10.     QGuiApplication app(argc, argv);
    11.  
    12.     QQmlApplicationEngine engine;
    13.  
    14.     qmlRegisterType("PageModel", 1, 0, "PageModel");
    15.  
    16.     engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    17.     if (engine.rootObjects().isEmpty())
    18.         return -1;
    19.  
    20.     return app.exec();
    21. }

    main.qml

    1. import QtQuick 2.9
    2. import QtQuick.Window 2.2
    3. import QtQuick.Controls 2.0
    4.  
    5. import PageModel 1.0
    6.  
    7. Window {
    8.     visible: true
    9.     width: 640
    10.     height: 480
    11.     title: qsTr("Hello World")
    12.  
    13.     Item {
    14.         anchors.fill: parent
    15.         Column{
    16.             anchors.fill: parent
    17.             Rectangle{
    18.                 id: page
    19.                 property int pageSize: 20
    20.                 property int pageIndex: 0
    21.                 property int pageCount: gridModel.count % pageSize === 0 ? gridModel.count / pageSize : gridModel.count / pageSize + 1
    22.                 property int sortOrder: Qt.AscendingOrder
    23.                 width: parent.width
    24.                 height: parent.height - 60
    25.  
    26.                 ListModel {
    27.                     id: gridModel
    28.                 }
    29.  
    30.                 Grid{
    31.                     anchors.centerIn: parent
    32.                     spacing: 10
    33.                     columns: 5
    34.                     Repeater{
    35.                         model: PageModel{
    36.                             sourceModel: gridModel
    37.                             pageIndex: page.pageIndex
    38.                             pageSize: page.pageSize
    39.                             sortOrder: page.sortOrder
    40.                         }
    41.                         delegate: Rectangle{
    42.                             width: 100
    43.                             height: 80
    44.                             border.width: 1
    45.                             color: "black"
    46.                             radius: 4
    47.                             Text{
    48.                                 text: userID
    49.                                 color: "white"
    50.                                 anchors.centerIn: parent
    51.                                 font.pixelSize: 20
    52.                             }
    53.                         }
    54.                     }
    55.                 }
    56.  
    57.                 Component.onCompleted: {
    58.                     for(var i=0; i<110; i++){
    59.                         gridModel.append({"userID": i})
    60.                     }
    61.                 }
    62.             }
    63.  
    64.             Item{
    65.                 width: parent.width
    66.                 height: 60
    67.                 Row{
    68.                     anchors.centerIn: parent
    69.                     spacing: 20
    70.  
    71.                     Button{
    72.                         text: "Previous"
    73.                         width: 70
    74.                         height: 40
    75.                         onClicked: {
    76.                             if(page.pageIndex > 0)
    77.                                 page.pageIndex -= 1
    78.                         }
    79.                     }
    80.  
    81.                     Text{
    82.                         text: String(page.pageIndex + 1) + "/" + String(page.pageCount)
    83.                         anchors.verticalCenter: parent.verticalCenter
    84.                     }
    85.  
    86.                     Button{
    87.                         text: "Next"
    88.                         width: 70
    89.                         height: 40
    90.                         onClicked: {
    91.                             if(page.pageIndex < page.pageCount - 1)
    92.                                 page.pageIndex += 1
    93.                         }
    94.                     }
    95.  
    96.                     CheckBox {
    97.                         text: "DescendingOrder"
    98.                         onCheckedChanged:{
    99.                             if(checked){
    100.                                 page.sortOrder = Qt.DescendingOrder
    101.                             }else{
    102.                                 page.sortOrder = Qt.AscendingOrder
    103.                             }
    104.                         }
    105.                     }
    106.                 }
    107.             }
    108.         }
    109.     }
    110. }

    2.source model使用自定义model

    自定义的model继承自QAbstractListModel，如何自定义model，可参考Qt官方demo——contact list


    这里使用自定义的model，加上自定义的SearchSortFilterProxyModel来实现搜索，效果如下所示：


    从效果图中可以看到，列表有1000行，每行都包括用户ID和用户名，我们将使用用户ID进行排序，使用用户名进行过滤（搜索）
    首先要在自定义的QHListModel中分别设置用户ID和用户名对应的role

    1. enum Roles
    2. {
    3.     IDRole = Qt::UserRole + 1,
    4.     NameRole = Qt::UserRole + 2
    5. };

    接着在调用SearchSortFilterProxyModel的setSortRole和setFilterRole方法来指定排序和过滤所使用的role

    1. QHListModel listModel;
    2.  
    3. for(int i=0;i<1000;i++)
    4. {
    5.     std::string name;
    6.     DataBaseRoll(name);
    7.     
    8.     QString userName = QString::fromStdString(name);
    9.     QString userID = QString::number(i);
    10.     
    11.     listModel.addData(userID,userName);
    12. }
    13.  
    14. SearchSortFilterProxyModel searchModel;
    15. searchModel.setSourceModel(&listModel);
    16. searchModel.setSortRole(IDRole);
    17. searchModel.setFilterRole(NameRole);

    最后在lessThan和filterAcceptsRow中根据role取出source model（QHListModel）中的数据进行排序和过滤

    1. bool SearchSortFilterProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
    2. {
    3.     QModelIndex index = sourceModel()->index(sourceRow, 0, sourceParent);
    4.     return sourceModel()->data(index, filterRole()).toString().contains(filterRegExp());
    5. }
    6.  
    7. bool SearchSortFilterProxyModel::lessThan(const QModelIndex &left, const QModelIndex &right) const
    8. {
    9.     QVariant leftData = sourceModel()->data(left, sortRole());
    10.     QVariant rightData = sourceModel()->data(right, sortRole());
    11.  
    12.     return leftData.toInt()
    13. }

    完整源码如下：
    QHListModel.h

    1. #ifndef QHLISTMODEL_H
    2. #define QHLISTMODEL_H
    3.  
    4. #include 
    5.  
    6. enum Roles
    7. {
    8.     IDRole = Qt::UserRole + 1,
    9.     NameRole = Qt::UserRole + 2
    10. };
    11.  
    12. class QHListModel : public QAbstractListModel
    13. {
    14. public:
    15.     QHListModel();
    16.     ~QHListModel();
    17.  
    18.     void addData(const QString &id, const QString &name);
    19.  
    20. protected:
    21.     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
    22.     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
    23.     QHash<int, QByteArray> roleNames() const override;
    24.  
    25. private:
    26.     QStringList m_userIDs;
    27.     QStringList m_userNames;
    28. };
    29.  
    30. #endif // QHLISTMODEL_H

    QHListModel.cpp

    1. #include "QHListModel.h"
    2.  
    3. QHListModel::QHListModel()
    4. {
    5.  
    6. }
    7.  
    8. QHListModel::~QHListModel()
    9. {
    10.  
    11. }
    12.  
    13. void QHListModel::addData(const QString &id, const QString &name)
    14. {
    15.     beginInsertRows(QModelIndex(), rowCount(), rowCount());
    16.     m_userIDs.append(id);
    17.     m_userNames.append(name);
    18.     endInsertRows();
    19. }
    20.  
    21. int QHListModel::rowCount(const QModelIndex &parent) const
    22. {
    23.     Q_UNUSED(parent)
    24.  
    25.     return m_userNames.count();
    26. }
    27.  
    28. QVariant QHListModel::data(const QModelIndex &index, int role) const
    29. {
    30.     if (index.row() < 0 || index.row() >= m_userNames.count())
    31.     {
    32.         return QVariant();
    33.     }
    34.  
    35.     if (role == IDRole)
    36.     {
    37.         return m_userIDs[index.row()];
    38.     }
    39.  
    40.     if (role == NameRole)
    41.     {
    42.         return m_userNames[index.row()];
    43.     }
    44.  
    45.     return QVariant();
    46. }
    47.  
    48. QHash<int, QByteArray> QHListModel::roleNames() const
    49. {
    50.     QHash<int, QByteArray> roles;
    51.     roles[IDRole] = "userID";
    52.     roles[NameRole] = "userName";
    53.     return roles;
    54. }

    SearchSortFilterProxyModel.h

    1. #ifndef SEARCHSORTFILTERPROXYMODEL_H
    2. #define SEARCHSORTFILTERPROXYMODEL_H
    3.  
    4. #include 
    5.  
    6. class SearchSortFilterProxyModel: public QSortFilterProxyModel
    7. {
    8.     Q_OBJECT
    9.     Q_PROPERTY(int sortOrder READ sortOrder WRITE setSortOrder NOTIFY sortOrderChanged)
    10.     Q_PROPERTY(QString filterString READ filterString WRITE setFilterString NOTIFY filterStringChanged)
    12. public:
    13.     SearchSortFilterProxyModel(QObject *parent = nullptr);
    14.     ~SearchSortFilterProxyModel();
    15.  
    16.     int sortOrder() const;
    17.     void setSortOrder(int order);
    18.  
    19.     QString filterString() const;
    20.     void setFilterString(const QString &string);
    21.  
    22. signals:
    23.     void sortOrderChanged();
    24.     void filterStringChanged();
    25.  
    26. protected:
    27.     QHash<int, QByteArray> roleNames() const override;
    28.     bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const override;
    29.     bool lessThan(const QModelIndex &left, const QModelIndex &right) const override;
    30.  
    31. private:
    32.     int m_sortOrder = Qt::AscendingOrder;
    33.     QString m_filterString;
    34. };
    35.  
    36. #endif // SEARCHSORTFILTERPROXYMODEL_H

    SearchSortFilterProxyModel.cpp

    1. #include "SearchSortFilterProxyModel.h"
    2.  
    3. #include 
    4. #include 
    5.  
    6. SearchSortFilterProxyModel::SearchSortFilterProxyModel(QObject *parent)
    7.     : QSortFilterProxyModel (parent)
    8. {
    9.  
    10. }
    11.  
    12. SearchSortFilterProxyModel::~SearchSortFilterProxyModel()
    13. {
    14.  
    15. }
    16.  
    17. QHash<int, QByteArray> SearchSortFilterProxyModel::roleNames() const
    18. {
    19.     return sourceModel()->roleNames();
    20. }
    21.  
    22. bool SearchSortFilterProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
    23. {
    24.     QModelIndex index = sourceModel()->index(sourceRow, 0, sourceParent);
    25.     return sourceModel()->data(index, filterRole()).toString().contains(filterRegExp());
    26. }
    27.  
    28. bool SearchSortFilterProxyModel::lessThan(const QModelIndex &left, const QModelIndex &right) const
    29. {
    30.     QVariant leftData = sourceModel()->data(left, sortRole());
    31.     QVariant rightData = sourceModel()->data(right, sortRole());
    32.  
    33.     return leftData.toInt()
    34. }
    35.  
    36. int SearchSortFilterProxyModel::sortOrder() const
    37. {
    38.     return m_sortOrder;
    39. }
    40.  
    41. void SearchSortFilterProxyModel::setSortOrder(int order)
    42. {
    43.     m_sortOrder = order;
    44.     emit sortOrderChanged();
    45.  
    46.     sort(0,static_cast(order));
    47. }
    48.  
    49. QString SearchSortFilterProxyModel::filterString() const
    50. {
    51.     return m_filterString;
    52. }
    53.  
    54. void SearchSortFilterProxyModel::setFilterString(const QString &string)
    55. {
    56.     m_filterString = string;
    57.     emit filterStringChanged();
    58.  
    59.     QRegExp regExp(string, Qt::CaseSensitive, QRegExp::FixedString);
    60.     setFilterRegExp(regExp);
    61. }

    main.cpp

    1. #include 
    2. #include 
    3. #include 
    4.  
    5. #include "QHListModel.h"
    6. #include "SearchSortFilterProxyModel.h"
    7.  
    8. #pragma execution_character_set("utf-8")
    9.  
    10. // 随机民生成器.
    11. inline void DataBaseRoll(std::string &name)
    12. {
    13.      //百家姓-单姓.
    14.      std::string NA1[444] = { "赵", "钱", "孙", "李", "周", "吴", "郑", "王", "冯", "陈", "褚", "卫", "蒋", "沈", "韩", "杨", "朱", "秦", "尤", "许", "何", "吕", "施", "张", "孔", "曹", "严", "华", "金", "魏", "陶", "姜", "戚", "谢", "邹", "喻", "柏", "水", "窦", "章", "云", "苏", "潘", "葛", "奚", "范", "彭", "郎", "鲁", "韦", "昌", "马", "苗", "凤", "花", "方", "俞", "任", "袁", "柳", "酆", "鲍", "史", "唐", "费", "廉", "岑", "薛", "雷", "贺", "倪", "汤", "滕", "殷", "罗", "毕", "郝", "邬", "安", "常", "乐", "于", "时", "傅", "皮", "卞", "齐", "康", "伍", "余", "元", "卜", "顾", "孟", "平", "黄", "和", "穆", "萧", "尹", "姚", "邵", "湛", "汪", "祁", "毛", "禹", "狄", "米", "贝", "明", "臧", "计", "伏", "成", "戴", "谈", "宋", "茅", "庞", "熊", "纪", "舒", "屈", "项", "祝", "董", "梁", "杜", "阮", "蓝", "闵", "席", "季", "麻", "强", "贾", "路", "娄", "危", "江", "童", "颜", "郭", "梅", "盛", "林", "刁", "钟", "徐", "邱", "骆", "高", "夏", "蔡", "田", "樊", "胡", "凌", "霍", "虞", "万", "支", "柯", "昝", "管", "卢", "莫", "经", "房", "裘", "缪", "干", "解", "应", "宗", "丁", "宣", "贲", "邓", "郁", "单", "杭", "洪", "包", "诸", "左", "石", "崔", "吉", "钮", "龚", "程", "嵇", "邢", "滑", "裴", "陆", "荣", "翁", "荀", "羊", "於", "惠", "甄", "麴", "家", "封", "芮", "羿", "储", "靳", "汲", "邴", "糜", "松", "井", "段", "富", "巫", "乌", "焦", "巴", "弓", "牧", "隗", "山", "谷", "车", "侯", "宓", "蓬", "全", "郗", "班", "仰", "秋", "仲", "伊", "宫", "宁", "仇", "栾", "暴", "甘", "钭", "厉", "戎", "祖", "武", "符", "刘", "景", "詹", "束", "龙", "叶", "幸", "司", "韶", "郜", "黎", "蓟", "薄", "印", "宿", "白", "怀", "蒲", "邰", "从", "鄂", "索", "咸", "籍", "赖", "卓", "蔺", "屠", "蒙","池", "乔", "阴", "郁", "胥", "能", "苍", "双", "闻", "莘", "党", "翟", "谭", "贡", "劳", "逄", "姬", "申", "扶", "堵", "冉", "宰", "郦", "雍", "舄", "璩", "桑", "桂", "濮", "牛", "寿", "通", "边", "扈", "燕", "冀", "郏", "浦", "尚", "农", "温", "别", "庄", "晏", "柴", "瞿", "阎", "充", "慕", "连", "茹", "习", "宦", "艾", "鱼", "容", "向", "古", "易", "慎", "戈", "廖", "庾", "终", "暨", "居", "衡", "步", "都", "耿", "满", "弘", "匡", "国", "文", "寇", "广", "禄", "阙", "东", "殴", "殳", "沃", "利", "蔚", "越", "夔", "隆", "师", "巩", "厍", "聂", "晁", "勾", "敖", "融", "冷", "訾", "辛", "阚", "那", "简", "饶", "空", "曾", "毋", "沙", "乜", "养", "鞠", "须", "丰", "巢", "关", "蒯", "相", "查", "後", "荆", "红", "游", "竺", "权", "逯", "盖", "益", "桓", "公", "仉", "督", "晋", "楚", "闫", "法", "汝", "鄢", "涂", "钦", "归", "海","岳", "帅", "缑", "亢", "况", "后", "有", "琴", "商", "牟", "佘", "佴", "伯", "赏", "墨", "哈", "谯", "笪", "年", "爱", "阳", "佟", "言", "福" };
    15.      std::string NA2[59] = { "万俟", "司马", "上官", "欧阳", "夏侯", "诸葛", "闻人", "东方", "赫连", "皇甫", "尉迟", "公羊", "澹台", "公冶", "宗政", "濮阳", "淳于", "单于", "太叔", "申屠", "公孙", "仲孙", "轩辕", "令狐", "钟离", "宇文", "长孙", "慕容", "鲜于", "闾丘", "司徒", "司空", "亓官", "司寇", "子车", "颛孙", "端木", "巫马", "公西", "漆雕", "乐正", "壤驷", "公良", "拓跋", "夹谷", "宰父", "谷梁", "百里", "东郭", "南门", "呼延", "羊舌", "微生", "梁丘", "左丘", "东门", "西门", "南宫", "第五" };
    16.      std::string ME1m[140] = { "伟", "刚", "勇", "毅", "俊", "峰", "强", "军", "平", "保", "东", "文", "辉", "力", "明", "永", "健", "世", "广", "志", "义", "兴", "良", "海", "山", "仁", "波", "宁", "贵", "福", "生", "龙", "元", "全", "国", "胜", "学", "祥", "才", "发", "武", "新", "利", "清", "飞", "彬", "富", "顺", "信", "子", "杰", "涛", "昌", "成", "康", "星", "光", "天", "达", "安", "岩", "中", "茂", "进", "林", "有", "坚", "和", "彪", "博", "诚", "先", "敬", "震", "振", "壮", "会", "思", "群", "豪", "心", "邦", "承", "乐", "绍", "功", "松", "善", "厚", "庆", "磊", "民", "友", "裕", "河", "哲", "江", "超", "浩", "亮", "政", "谦", "亨", "奇", "固", "之", "轮", "翰", "朗", "伯", "宏", "言", "若", "鸣", "朋", "斌", "梁", "栋", "维", "启", "克", "伦", "翔", "旭", "鹏", "泽", "晨", "辰", "士", "以", "建", "家", "致", "树", "炎", "德", "行", "时", "泰", "盛" };
    17.      std::string ME1f[165] = { "秀", "娟", "英", "华", "慧", "巧", "美", "娜", "静", "淑", "惠", "珠", "翠", "雅", "芝", "玉", "萍", "红", "娥", "玲", "芬", "芳", "燕", "彩", "春", "菊", "兰", "凤", "洁", "梅", "琳", "素", "云", "莲", "真", "环", "雪", "荣", "爱", "妹", "霞", "香", "月", "莺", "媛", "艳", "瑞", "凡", "佳", "嘉", "琼", "勤", "珍", "贞", "莉", "桂", "娣", "叶", "璧", "璐", "娅", "琦", "晶", "妍", "茜", "秋", "珊", "莎", "锦", "黛", "青", "倩", "婷", "姣", "婉", "娴", "瑾", "颖", "露", "瑶", "怡", "婵", "雁", "蓓", "纨", "仪", "荷", "丹", "蓉", "眉", "君", "琴", "蕊", "薇", "菁", "梦", "岚", "苑", "筠", "柔", "竹", "霭", "凝", "晓", "欢", "霄", "枫", "芸", "菲", "寒", "欣", "滢", "伊", "亚", "宜", "可", "姬", "舒", "影", "荔", "枝", "思", "丽", "秀", "飘", "育", "馥", "琦", "晶", "妍", "茜", "秋", "珊", "莎", "锦", "黛", "青", "倩", "婷", "宁","蓓", "纨", "苑", "婕", "馨", "瑗", "琰", "韵", "融", "园", "艺", "咏", "卿", "聪", "澜", "纯", "毓", "悦", "昭", "冰", "爽", "琬", "茗", "羽", "希" };
    18.      std::string sex = (rand()%2 == 0?"男":"女");//男女选择.
    19.      name = (rand()%56 != 5?NA1[rand()%444]:NA2[rand()%59]);//单姓Or复姓选择.
    20.      name += (sex == "男" ? ME1m[rand()%140] : ME1f[rand()%165]);//取名第一字.
    21.  
    22.      if(rand()%2 == 0) name += (sex == "男" ? ME1m[rand()%140] : ME1f[rand()%165]);//取名第二字.
    23. }
    24.  
    25. int main(int argc, char *argv[])
    26. {
    27.     QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
    28.  
    29.     QGuiApplication app(argc, argv);
    30.  
    31.     QHListModel listModel;
    32.  
    33.     for(int i=0;i<1000;i++)
    34.     {
    35.         std::string name;
    36.         DataBaseRoll(name);
    37.  
    38.         QString userName = QString::fromStdString(name);
    39.         QString userID = QString::number(i);
    40.  
    41.         listModel.addData(userID,userName);
    42.     }
    43.  
    44.     SearchSortFilterProxyModel searchModel;
    45.     searchModel.setSourceModel(&listModel);
    46.     searchModel.setSortRole(IDRole);
    47.     searchModel.setFilterRole(NameRole);
    48.  
    49.     QQmlApplicationEngine engine;
    50.  
    51.     QQmlContext *context = engine.rootContext();
    52.     context->setContextProperty("searchModel", &searchModel);
    53.  
    54.     engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    55.     if (engine.rootObjects().isEmpty())
    56.         return -1;
    57.  
    58.     return app.exec();
    59. }

    main.qml

    1. import QtQuick 2.9
    2. import QtQuick.Window 2.2
    3. import QtQuick.Controls 2.0
    4. import QtQuick.Layouts 1.0
    5.  
    6. Window {
    7.     visible: true
    8.     width: 480
    9.     height: 800
    10.     title: qsTr("Hello World")
    11.  
    12.     Item {
    13.         anchors.fill: parent
    14.         anchors.margins: 10
    15.  
    16.         Rectangle {
    17.             id: searchTool
    18.             anchors.top: parent.top
    19.             anchors.left: parent.left
    20.             anchors.right: parent.right
    21.             height: 40
    22.  
    23.             RowLayout {
    24.                 anchors.fill: parent
    25.                 anchors.centerIn: parent
    26.                 TextField {
    27.                     placeholderText: "请输入关键字"
    28.                     Layout.fillWidth: true
    29.                     font.pointSize: 12
    30.                     onTextChanged: {
    31.                         searchModel.filterString = text;
    32.                     }
    33.                 }
    34.                 CheckBox {
    35.                     text: "DescendingOrder"
    36.                     onCheckedChanged:{
    37.                         searchModel.sortOrder = checked ? Qt.DescendingOrder : Qt.AscendingOrder;
    38.                     }
    39.                 }
    40.             }
    41.         }
    42.  
    43.         ListView {
    44.             id: view
    45.             model: searchModel
    46.             anchors.top: searchTool.bottom
    47.             anchors.topMargin: 3
    48.             anchors.bottom: parent.bottom
    49.             anchors.left: parent.left
    50.             anchors.right: parent.right
    51.             cacheBuffer: 100
    52.             clip: true
    53.             spacing: 1
    54.  
    55.             delegate: Rectangle{
    56.                 width: parent.width
    57.                 radius: 5
    58.                 anchors.horizontalCenter: parent.horizontalCenter
    59.                 height: 40
    60.                 color: "black"
    61.  
    62.                 RowLayout {
    63.                     anchors.fill: parent
    64.                     anchors.leftMargin: 30
    65.                     spacing: 30
    66.                     Text {
    67.                         text: userID
    68.                         font.pointSize: 12
    69.                         font.bold: true
    70.                         color: "white"
    71.                     }
    72.  
    73.                     Text {
    74.                         text: userName
    75.                         font.pointSize: 12
    76.                         font.bold: true
    77.                         color: "white"
    78.                         Layout.fillWidth: true
    79.                     }
    80.                 }
    81.             }
    82.  
    83.             ScrollBar.vertical: ScrollBar {
    84.                 anchors.right: parent.right
    85.                 anchors.rightMargin: 1
    86.                 width: 16
    87.             }
    88.         }
    89.     }
    90. }

    原文链接：https://blog.csdn.net/caoshangpa/article/details/126021903

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  • 原文地址：https://blog.csdn.net/caoshangpa/article/details/126021903