彻底改版2.0
This commit is contained in:
feiyangqingyun
557
other/dbpage/dbpage.cpp
Normal file
557
other/dbpage/dbpage.cpp
Normal file
@@ -0,0 +1,557 @@
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#pragma execution_character_set("utf-8")
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#include "dbpage.h"
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SqlQueryModel::SqlQueryModel(QObject *parent) : QSqlQueryModel(parent)
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{
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allCenter = false;
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alignCenterColumn.clear();
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alignRightColumn.clear();
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}
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QVariant SqlQueryModel::data(const QModelIndex &index, int role) const
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{
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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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value = Qt::AlignCenter;
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}
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} else {
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//逐个从列索引中查找是否当前列在其中
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int column = index.column();
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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 (existCenter) {
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value = Qt::AlignCenter;
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}
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if (existRight) {
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value = (QVariant)(Qt::AlignVCenter | Qt::AlignRight);
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}
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}
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}
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//实现鼠标经过整行换色,如果设置了hoverRow才需要处理
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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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value = QColor(property("hoverBgColor").toString());
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} else if (role == Qt::ForegroundRole) {
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value = QColor(property("hoverTextColor").toString());
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}
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}
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}
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//实现隐藏部分显示,指定列和替换字符
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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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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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QString str = value.toString();
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QStringList list;
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for (int i = 0; i < str.length(); i++) {
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if (i >= start && i <= end) {
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list << letter;
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} else {
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list << str.at(i);
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}
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}
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value = list.join("");
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}
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}
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}
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return value;
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}
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void SqlQueryModel::setAllCenter(bool allCenter)
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{
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this->allCenter = allCenter;
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}
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void SqlQueryModel::setAlignCenterColumn(const QList<int> &alignCenterColumn)
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{
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this->alignCenterColumn = alignCenterColumn;
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}
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void SqlQueryModel::setAlignRightColumn(const QList<int> &alignRightColumn)
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{
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this->alignRightColumn = alignRightColumn;
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}
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DbCountThread::DbCountThread(QObject *parent) : QThread(parent)
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{
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connName = "qt_sql_default_connection";
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sql = "select 1";
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connect(this, SIGNAL(finished()), this, SLOT(deleteLater()));
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}
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void DbCountThread::run()
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{
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select();
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}
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void DbCountThread::setConnName(const QString &connName)
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{
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this->connName = connName;
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}
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void DbCountThread::setSql(const QString &sql)
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{
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this->sql = sql;
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}
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void DbCountThread::select()
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{
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//计算用时
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QDateTime dtStart = QDateTime::currentDateTime();
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int count = 0;
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QSqlQuery query(QSqlDatabase::database(connName));
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if (query.exec(sql)) {
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if (query.next()) {
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count = query.value(0).toUInt();
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}
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}
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QDateTime dtEnd = QDateTime::currentDateTime();
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double msec = dtStart.msecsTo(dtEnd);
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emit receiveCount(count, msec);
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}
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DbPage::DbPage(QObject *parent) : QObject(parent)
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{
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startIndex = 0;
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queryModel = new SqlQueryModel;
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pageCurrent = 1;
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pageTotal = 0;
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recordsTotal = 0;
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recordsPerpage = 0;
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labPageTotal = 0;
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labPageCurrent = 0;
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labRecordsTotal = 0;
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labRecordsPerpage = 0;
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labSelectTime = 0;
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labSelectInfo = 0;
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tableView = 0;
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btnFirst = 0;
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btnPrevious = 0;
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btnNext = 0;
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btnLast = 0;
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countName = "*";
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connName = "qt_sql_default_connection";
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dbType = DbType_Sqlite;
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pageCurrent = 0;
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pageTotal = 0;
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recordsTotal = 0;
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recordsPerpage = 30;
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tableName = "";
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selectColumn = "*";
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orderSql = "";
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whereSql = "";
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columnNames.clear();
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columnWidths.clear();
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insertColumnIndex = -1;
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insertColumnName = "";
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insertColumnWidth = 50;
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}
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void DbPage::bindData(const QString &columnName, const QString &orderColumn, const QString &tableName,
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QComboBox *cbox, const QString &connName)
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{
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QSqlQuery query(QSqlDatabase::database(connName));
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query.exec("select " + columnName + " from " + tableName + " order by " + orderColumn + " asc");
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while (query.next()) {
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cbox->addItem(query.value(0).toString());
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}
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}
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void DbPage::bindData(const QString &columnName, const QString &orderColumn, const QString &tableName,
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QList<QComboBox *> cboxs, const QString &connName)
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{
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QSqlQuery query(QSqlDatabase::database(connName));
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query.exec("select " + columnName + " from " + tableName + " order by " + orderColumn + " asc");
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while (query.next()) {
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foreach (QComboBox *cbox, cboxs) {
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cbox->addItem(query.value(0).toString());
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}
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}
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}
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void DbPage::bindData(const QString &sql)
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{
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queryModel->setQuery(sql, QSqlDatabase::database(connName));
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tableView->setModel(queryModel);
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//依次设置列标题列宽
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int columnCount = tableView->model()->columnCount();
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int nameCount = columnNames.count();
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columnCount = columnCount > nameCount ? nameCount : columnCount;
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QList<QString> columnNames = this->columnNames;
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QList<int> columnWidths = this->columnWidths;
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//根据设置添加新列,将对应新列的标题名称和宽度按照索引位置插
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if (insertColumnIndex >= 0) {
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columnCount++;
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columnNames.insert(insertColumnIndex, insertColumnName);
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columnWidths.insert(insertColumnIndex, insertColumnWidth);
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queryModel->insertColumn(insertColumnIndex);
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}
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//设置列标题和列宽度
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for (int i = 0; i < columnCount; i++) {
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queryModel->setHeaderData(i, Qt::Horizontal, columnNames.at(i));
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tableView->setColumnWidth(i, columnWidths.at(i));
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}
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if (labPageCurrent != 0) {
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labPageCurrent->setText(QString("第 %1 页").arg(pageCurrent));
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}
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if (labPageTotal != 0) {
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labPageTotal->setText(QString("共 %1 页").arg(pageTotal));
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}
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if (labRecordsTotal != 0) {
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labRecordsTotal->setText(QString("共 %1 条").arg(recordsTotal));
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}
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if (labRecordsPerpage != 0) {
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labRecordsPerpage->setText(QString("每页 %1 条").arg(recordsPerpage));
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}
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if (labSelectInfo != 0) {
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//labSelectInfo->setText(QString("共 %1 条 每页 %2 条 共 %3 页 第 %4 页").arg(recordsTotal).arg(recordsPerpage).arg(pageTotal).arg(pageCurrent));
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labSelectInfo->setText(QString("第 %1 页 每页 %2 条 共 %3 页 共 %4 条").arg(pageCurrent).arg(recordsPerpage).arg(pageTotal).arg(recordsTotal));
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}
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//发送结果信号
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if (recordsTotal != recordsPerpage) {
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emit receivePage(pageCurrent, pageTotal, recordsTotal, recordsPerpage);
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//qDebug() << TIMEMS << startIndex << pageCurrent << pageTotal << recordsTotal << recordsPerpage;
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}
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changeBtnEnable();
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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(recordsPerpage);
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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(recordsPerpage);
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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 (labSelectTime != 0) {
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labSelectTime->setText(QString("查询用时 %1 秒").arg(QString::number(msec / 1000, 'f', 3)));
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}
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recordsTotal = count;
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int yushu = recordsTotal % recordsPerpage;
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//不存在余数,说明是整行,例如300%5==0
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if (yushu == 0) {
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if (recordsTotal > 0 && recordsTotal < recordsPerpage) {
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pageTotal = 1;
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} else {
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pageTotal = recordsTotal / recordsPerpage;
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}
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} else {
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pageTotal = (recordsTotal / recordsPerpage) + 1;
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}
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bindData(getPageSql());
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}
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//设置显示数据的表格控件,当前翻页信息的标签控件等
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void DbPage::setControl(QTableView *tableView,
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QLabel *labPageTotal, QLabel *labPageCurrent,
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QLabel *labRecordsTotal, QLabel *labRecordsPerpage,
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QLabel *labSelectTime, QLabel *labSelectInfo,
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QAbstractButton *btnFirst, QAbstractButton *btnPrevious,
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QAbstractButton *btnNext, QAbstractButton *btnLast,
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const QString &countName, const QString &connName)
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{
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this->tableView = tableView;
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this->labPageTotal = labPageTotal;
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this->labPageCurrent = labPageCurrent;
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this->labRecordsTotal = labRecordsTotal;
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this->labRecordsPerpage = labRecordsPerpage;
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this->labSelectTime = labSelectTime;
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this->labSelectInfo = labSelectInfo;
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this->btnFirst = btnFirst;
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this->btnPrevious = btnPrevious;
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this->btnNext = btnNext;
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this->btnLast = btnLast;
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this->countName = countName;
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this->connName = connName;
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this->tableView->setSelectionBehavior(QAbstractItemView::SelectRows);
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if (btnFirst == 0 || btnPrevious == 0 || btnNext == 0 || btnLast == 0) {
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return;
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}
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//挂载翻页按钮事件
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connect(btnFirst, SIGNAL(clicked()), this, SLOT(first()));
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connect(btnPrevious, SIGNAL(clicked()), this, SLOT(previous()));
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connect(btnNext, SIGNAL(clicked()), this, SLOT(next()));
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connect(btnLast, SIGNAL(clicked()), this, SLOT(last()));
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}
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void DbPage::setControl(QTableView *tableView,
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QLabel *labPageTotal, QLabel *labPageCurrent,
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QLabel *labRecordsTotal, QLabel *labRecordsPerpage,
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QLabel *labSelectTime, QLabel *labSelectInfo,
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const QString &countName, const QString &connName)
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{
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setControl(tableView, labPageTotal, labPageCurrent, labRecordsTotal, labRecordsPerpage, labSelectTime, labSelectInfo, 0, 0, 0, 0, countName, connName);
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}
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void DbPage::setControl(QTableView *tableView,
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QAbstractButton *btnFirst, QAbstractButton *btnPrevious,
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QAbstractButton *btnNext, QAbstractButton *btnLast,
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const QString &countName, const QString &connName)
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{
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setControl(tableView, 0, 0, 0, 0, 0, 0, btnFirst, btnPrevious, btnNext, btnLast, countName, connName);
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}
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void DbPage::setControl(QTableView *tableView, const QString &countName, const QString &connName)
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{
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setControl(tableView, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, countName, connName);
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}
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void DbPage::setConnName(const QString &connName)
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{
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this->connName = connName;
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}
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void DbPage::setDbType(const DbPage::DbType &dbType)
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{
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this->dbType = dbType;
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}
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void DbPage::setTableName(const QString &tableName)
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{
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this->tableName = tableName;
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}
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void DbPage::setSelectColumn(const QString &selectColumn)
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{
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this->selectColumn = selectColumn;
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}
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void DbPage::setOrderSql(const QString &orderSql)
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{
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this->orderSql = orderSql;
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}
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void DbPage::setWhereSql(const QString &whereSql)
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{
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this->whereSql = whereSql;
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}
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void DbPage::setRecordsPerpage(int recordsPerpage)
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{
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this->recordsPerpage = recordsPerpage;
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}
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void DbPage::setColumnNames(const QList<QString> &columnNames)
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{
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this->columnNames = columnNames;
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}
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void DbPage::setColumnWidths(const QList<int> &columnWidths)
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{
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this->columnWidths = columnWidths;
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}
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void DbPage::setAllCenter(bool allCenter)
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{
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queryModel->setAllCenter(allCenter);
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}
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void DbPage::setAlignCenterColumn(const QList<int> &alignCenterColumn)
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{
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queryModel->setAlignCenterColumn(alignCenterColumn);
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}
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void DbPage::setAlignRightColumn(const QList<int> &alignRightColumn)
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{
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queryModel->setAlignRightColumn(alignRightColumn);
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}
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void DbPage::setInsertColumnIndex(int insertColumnIndex)
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{
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this->insertColumnIndex = insertColumnIndex;
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}
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void DbPage::setInsertColumnName(const QString &insertColumnName)
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{
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this->insertColumnName = insertColumnName;
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}
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void DbPage::setInsertColumnWidth(int insertColumnWidth)
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{
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this->insertColumnWidth = insertColumnWidth;
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}
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void DbPage::changeBtnEnable()
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{
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if (btnFirst == 0 || btnPrevious == 0 || btnNext == 0 || btnLast == 0) {
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return;
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}
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//下面默认对上一页下一页按钮禁用
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//也可以取消注释对第一页末一页同样处理
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//因为到了第一页就可以不必再单击第一页和上一页
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if (pageTotal <= 1) {
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//如果只有一页数据则翻页按钮不可用
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btnFirst->setEnabled(false);
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btnLast->setEnabled(false);
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btnPrevious->setEnabled(false);
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btnNext->setEnabled(false);
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} else {
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//判断是否在首页末页禁用按钮
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bool first = (pageCurrent == 1);
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bool last = (pageCurrent == pageTotal);
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btnFirst->setEnabled(!first);
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btnLast->setEnabled(!last);
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btnPrevious->setEnabled(!first);
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btnNext->setEnabled(!last);
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}
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}
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void DbPage::select()
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{
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//重置开始索引
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startIndex = 0;
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pageCurrent = 1;
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pageTotal = 1;
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changeBtnEnable();
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//假设只有一页
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slot_receiveCount(recordsPerpage, 0);
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//文本显示正在查询...
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QString info = "正在查询...";
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if (labSelectInfo != 0) {
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labSelectInfo->setText(info);
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}
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if (labPageCurrent != 0) {
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labPageCurrent->setText(info);
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}
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if (labPageTotal != 0) {
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labPageTotal->setText(info);
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}
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if (labRecordsTotal != 0) {
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labRecordsTotal->setText(info);
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}
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if (labRecordsPerpage != 0) {
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labRecordsPerpage->setText(info);
|
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}
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if (labSelectTime != 0) {
|
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labSelectTime->setText(info);
|
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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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||||
QString sql = QString("select count(%1) from %2 %3").arg(countName).arg(tableName).arg(whereSql);
|
||||
|
||||
//采用线程执行查询复合条件的记录行数
|
||||
DbCountThread *dbCountThread = new DbCountThread(this);
|
||||
//绑定查询结果信号槽,一旦收到结果则立即执行
|
||||
connect(dbCountThread, SIGNAL(receiveCount(quint32, double)), this, SIGNAL(receiveCount(quint32, double)));
|
||||
connect(dbCountThread, SIGNAL(receiveCount(quint32, double)), this, SLOT(slot_receiveCount(quint32, double)));
|
||||
|
||||
//设置数据库连接名称和查询语句,并启动线程
|
||||
dbCountThread->setConnName(connName);
|
||||
dbCountThread->setSql(sql);
|
||||
//从5.10开始不支持数据库在线程中执行
|
||||
#if (QT_VERSION <= QT_VERSION_CHECK(5,10,0))
|
||||
dbCountThread->start();
|
||||
#else
|
||||
dbCountThread->select();
|
||||
#endif
|
||||
}
|
||||
|
||||
void DbPage::selectPage(int page)
|
||||
{
|
||||
//必须小于总页数+不是当前页
|
||||
if (page >= 1 && page <= pageTotal && page != pageCurrent) {
|
||||
//计算指定页对应开始的索引
|
||||
startIndex = (page - 1) * recordsPerpage;
|
||||
pageCurrent = page;
|
||||
bindData(getPageSql());
|
||||
}
|
||||
}
|
||||
|
||||
void DbPage::first()
|
||||
{
|
||||
//当前页不是第一页才能切换到第一页
|
||||
if (pageTotal > 1 && pageCurrent != 1) {
|
||||
startIndex = 0;
|
||||
pageCurrent = 1;
|
||||
bindData(getPageSql());
|
||||
}
|
||||
}
|
||||
|
||||
void DbPage::previous()
|
||||
{
|
||||
//当前页不是第一页才能上一页
|
||||
if (pageCurrent > 1) {
|
||||
pageCurrent--;
|
||||
startIndex -= recordsPerpage;
|
||||
bindData(getPageSql());
|
||||
}
|
||||
}
|
||||
|
||||
void DbPage::next()
|
||||
{
|
||||
//当前页小于总页数才能下一页
|
||||
if (pageCurrent < pageTotal) {
|
||||
pageCurrent++;
|
||||
startIndex += recordsPerpage;
|
||||
bindData(getPageSql());
|
||||
}
|
||||
}
|
||||
|
||||
void DbPage::last()
|
||||
{
|
||||
//当前页不是末尾页才能切换到末尾页
|
||||
if (pageTotal > 1 && pageCurrent != pageTotal) {
|
||||
startIndex = (pageTotal - 1) * recordsPerpage;
|
||||
pageCurrent = pageTotal;
|
||||
bindData(getPageSql());
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user