改进部分代码
feiyangqingyun
parent
8beba8758b
commit
8978488e66
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@ -13,7 +13,7 @@ QVariant SqlQueryModel::data(const QModelIndex &index, int role) const
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QVariant value = QSqlQueryModel::data(index, role);
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if (allCenter) {
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if(role == Qt::TextAlignmentRole ) {
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if (role == Qt::TextAlignmentRole) {
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value = Qt::AlignCenter;
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}
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} else {
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@ -22,7 +22,7 @@ QVariant SqlQueryModel::data(const QModelIndex &index, int role) const
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bool existCenter = alignCenterColumn.contains(column);
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bool existRight = alignRightColumn.contains(column);
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if(role == Qt::TextAlignmentRole) {
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if (role == Qt::TextAlignmentRole) {
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if (existCenter) {
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value = Qt::AlignCenter;
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}
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@ -37,9 +37,9 @@ QVariant SqlQueryModel::data(const QModelIndex &index, int role) const
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if (property("hoverRow").isValid()) {
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int row = property("hoverRow").toInt();
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if (row == index.row()) {
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if(role == Qt::BackgroundRole) {
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if (role == Qt::BackgroundRole) {
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value = QColor(property("hoverBgColor").toString());
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} else if(role == Qt::TextColorRole) {
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} else if (role == Qt::TextColorRole) {
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value = QColor(property("hoverTextColor").toString());
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}
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}
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@ -49,7 +49,7 @@ QVariant SqlQueryModel::data(const QModelIndex &index, int role) const
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if (property("hideColumn").isValid()) {
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int column = property("hideColumn").toInt();
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if (column == index.column()) {
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if(role == Qt::DisplayRole) {
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if (role == Qt::DisplayRole) {
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QString letter = property("hideLetter").toString();
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int start = property("hideStart").toInt();
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int end = property("hideEnd").toInt();
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@ -144,8 +144,6 @@ DbPage *DbPage::Instance()
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DbPage::DbPage(QObject *parent) : QObject(parent)
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{
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startIndex = 0;
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tempSql = "";
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sql = "";
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queryModel = new SqlQueryModel;
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pageCurrent = 1;
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@ -260,6 +258,24 @@ void DbPage::bindData(const QString &sql)
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emit receivePage(pageCurrent, pageCount, resultCount, resultCurrent);
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}
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QString DbPage::getPageSql()
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{
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//组织分页SQL语句,不同的数据库分页语句不一样
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QString sql = QString("select %1 from %2 %3 order by %4").arg(selectColumn).arg(tableName).arg(whereSql).arg(orderSql);
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if (dbType == DbType_PostgreSQL || dbType == DbType_KingBase) {
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sql = QString("%1 limit %3 offset %2;").arg(sql).arg(startIndex).arg(resultCurrent);
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} else if (dbType == DbType_SqlServer) {
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//取第m条到第n条记录：select top (n-m+1) id from tablename where id not in (select top m-1 id from tablename)
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//sql = QString("select %1 from %2 %3 order by %4").arg(selectColumn).arg(tableName).arg(whereSql).arg(orderSql);
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} else if (dbType == DbType_Oracle) {
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//暂时没有找到好办法
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} else {
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sql = QString("%1 limit %2,%3;").arg(sql).arg(startIndex).arg(resultCurrent);
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}
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return sql;
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}
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void DbPage::slot_receiveCount(quint32 count, double msec)
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{
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if (labResult != 0) {
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@ -294,10 +310,7 @@ void DbPage::slot_receiveCount(quint32 count, double msec)
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btnPre->setEnabled(true);
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}
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tempSql = QString("select %1 from %2 %3 order by %4").arg(selectColumn).arg(tableName).arg(whereSql).arg(orderSql);
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sql = QString("%1 limit %2,%3;").arg(tempSql).arg(startIndex).arg(resultCurrent); //组织分页SQL语句
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bindData(sql);
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bindData(getPageSql());
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}
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void DbPage::first()
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@ -305,8 +318,7 @@ void DbPage::first()
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if (pageCount > 1) {
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startIndex = 0;
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pageCurrent = 1;
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sql = QString("%1 limit %2,%3;").arg(tempSql).arg(startIndex).arg(resultCurrent);
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bindData(sql);
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bindData(getPageSql());
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btnLast->setEnabled(true);
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btnNext->setEnabled(true);
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}
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@ -320,8 +332,7 @@ void DbPage::previous()
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if (pageCurrent > 1) {
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pageCurrent--;
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startIndex -= resultCurrent;
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sql = QString("%1 limit %2,%3;").arg(tempSql).arg(startIndex).arg(resultCurrent);
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bindData(sql);
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bindData(getPageSql());
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btnLast->setEnabled(true);
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btnNext->setEnabled(true);
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}
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@ -337,8 +348,7 @@ void DbPage::next()
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if (pageCurrent < pageCount) {
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pageCurrent++;
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startIndex += resultCurrent;
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sql = QString("%1 limit %2,%3;").arg(tempSql).arg(startIndex).arg(resultCurrent);
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bindData(sql);
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bindData(getPageSql());
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btnFirst->setEnabled(true);
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btnPre->setEnabled(true);
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}
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@ -354,8 +364,7 @@ void DbPage::last()
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if (pageCount > 0) {
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startIndex = (pageCount - 1) * resultCurrent;
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pageCurrent = pageCount;
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sql = QString("%1 limit %2,%3;").arg(tempSql).arg(startIndex).arg(resultCurrent);
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bindData(sql);
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bindData(getPageSql());
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btnFirst->setEnabled(true);
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btnPre->setEnabled(true);
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}
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@ -514,7 +523,7 @@ void DbPage::select()
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}
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//开始分页绑定数据前,计算好总数据量以及行数
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tempSql = QString("select count(%1) from %2 %3").arg(countName).arg(tableName).arg(whereSql);
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QString sql = QString("select count(%1) from %2 %3").arg(countName).arg(tableName).arg(whereSql);
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//采用线程执行查询复合条件的记录行数
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DbCountThread *dbCountThread = new DbCountThread(this);
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@ -524,7 +533,7 @@ void DbPage::select()
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//设置数据库连接名称和查询语句,并启动线程
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dbCountThread->setConnName(connName);
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dbCountThread->setSql(tempSql);
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dbCountThread->setSql(sql);
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//从5.10开始不支持数据库在线程中执行
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#if (QT_VERSION <= QT_VERSION_CHECK(5,10,0))
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dbCountThread->start();
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@ -77,11 +77,14 @@ class DbPage : public QObject
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Q_OBJECT
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public:
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enum DbType {
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DbType_Sqlite = 0, //sqlite数据库
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DbType_MySql = 1, //mysql数据库
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DbType_SqlServer = 3, //sqlserver数据库
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DbType_Access = 4, //access数据库
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DbType_PostgreSQL = 5 //postgresql数据库
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DbType_ODBC = 0, //odbc数据源
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DbType_Sqlite = 1, //sqlite数据库
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DbType_MySql = 2, //mysql数据库
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DbType_PostgreSQL = 3, //postgresql数据库
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DbType_SqlServer = 4, //sqlserver数据库
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DbType_Oracle = 5, //oracle数据库
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DbType_KingBase = 6, //人大金仓数据库
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DbType_Other = 255 //其他数据库
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};
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static DbPage *Instance();
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@ -97,8 +100,6 @@ private:
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static QScopedPointer<DbPage> self;
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int startIndex; //分页开始索引,每次翻页都变动
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QString tempSql; //临时SQL语句
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QString sql; //sql语句
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SqlQueryModel *queryModel; //查询模型
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QLabel *labPageCount; //总页数标签
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@ -143,6 +144,8 @@ private slots:
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private slots:
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//绑定sql语句到表格
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void bindData(const QString &sql);
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//生成分页sql语句
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QString getPageSql();
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//收到记录行数
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void slot_receiveCount(quint32 count, double msec);
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@ -568,6 +568,16 @@ QList<QRect> VideoWidget::getFaceRects() const
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return this->faceRects;
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}
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QSize VideoWidget::sizeHint() const
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{
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return QSize(400, 300);
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}
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QSize VideoWidget::minimumSizeHint() const
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{
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return QSize(40, 30);
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}
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void VideoWidget::updateImage(const QImage &image)
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{
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//拷贝图片有个好处,当处理器比较差的时候,图片不会产生断层,缺点是占用时间
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@ -204,6 +204,9 @@ public:
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QColor getFaceColor() const;
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QList<QRect> getFaceRects() const;
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QSize sizeHint() const;
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QSize minimumSizeHint() const;
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private slots:
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//接收图像并绘制
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void updateImage(const QImage &image);
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