QCombox和QDateTimeEdit组合实现今日、本月、本季、本年、自定义时间的切换

一、功能描述

实现功能：使用QCombox和QDateTimeEdit实现今日、本月、本季、本年、自定义时间的切换，今日、本月、本季、本年默认时间不可以修改，自定义时可以修改。

二、说明

说明：由于能力有限，没有找到好的方法，代码写的也比较low，也没有进行优化，只希望能给用到的人提供一种思路。

三、实现效果

效果截图如下：

四、代码示例

connect(ui->comboBox,SIGNAL(currentTextChanged(const QString)),this,SLOT(dealSelectComboxDate(const QString)));

// 函数说明：选择时间周期
void MainWindow::dealSelectComboxDate(const QString text)
{
	ui->dateTimeEditBegin->setEnabled(false);
	ui->dateTimeEditEnd->setEnabled(false);
	if (text.contains("日"))
	{
		comboxSelectDayIndex();
	}
	else if (text.contains("月"))
	{
		comboxSelectMonthIndex();
	}
	else if (text.contains("季"))
	{
		comboxSelectSeasonIndex();
	}
	else if (text.contains("年"))
	{
		comboxSelectYearIndex();
	}
	else
	{
		ui->dateTimeEditBegin->setEnabled(true);
		ui->dateTimeEditEnd->setEnabled(true);
	}
}

// 函数说明：combox时间选择日时
void MainWindow::comboxSelectDayIndex()
{
	QDate curDate = QDate::currentDate();
	QString dayDate = curDate.toString("yyyy-MM-dd");
	QString timeBegin = QString(" 00:00:00");
	QString timeEnd = QString(" 23:59:59");
	QString dateTimeBeginStr = dayDate + timeBegin;
	QString dateTimeEndStr = dayDate + timeEnd;
	QDateTime dateTimeBegin = QDateTime::fromString(dateTimeBeginStr, "yyyy-MM-dd hh:mm:ss");
	QDateTime dateTimeEnd = QDateTime::fromString(dateTimeEndStr, "yyyy-MM-dd hh:mm:ss");
	ui->dateTimeEditBegin->setDateTime(dateTimeBegin);
	ui->dateTimeEditEnd->setDateTime(dateTimeEnd);
}

// 函数说明：combox时间选择月时
void MainWindow::comboxSelectMonthIndex()
{
	QDate curDate = QDate::currentDate();
	int days = curDate.daysInMonth();
	QString yearDate = QString("%1-").arg(curDate.year());
	QString monthDate = QString("%1-").arg(curDate.month());
	QString monthBegin = yearDate + monthDate + QString("01") + QString(" 00:00:00");
	QString monthEnd = yearDate + monthDate + QString("%1").arg(days) + QString(" 23:59:59");
	QDateTime dateTimeBegin = QDateTime::fromString(monthBegin, "yyyy-MM-dd hh:mm:ss");
	QDateTime dateTimeEnd = QDateTime::fromString(monthEnd, "yyyy-MM-dd hh:mm:ss");
	ui->dateTimeEditBegin->setDateTime(dateTimeBegin);
	ui->dateTimeEditEnd->setDateTime(dateTimeEnd);
}

// 函数说明：combox时间选择季时
void MainWindow::comboxSelectSeasonIndex()
{
	QDate curDate = QDate::currentDate();
	int month = curDate.month();
	QString timeBegin = QString(" 00:00:00");
	QString timeEnd = QString(" 23:59:59");
	QString dayBeginDate = QString("01");
	QString dayEndDate = QString("31");
	QString monthBeginDate = QString("01-");
	QString monthEndDate = QString("03-");
	QString yearDate = QString("%1-").arg(curDate.year());
	if (month == 1 || month == 2 || month == 3)
	{
		
	}
	else if (month == 4 || month == 5 || month == 6)
	{
		dayEndDate = QString("30");
		monthBeginDate = QString("04-");
		monthEndDate = QString("06-");
	}
	else if (month == 7 || month == 8 || month == 9)
	{
		dayEndDate = QString("30");
		monthBeginDate = QString("07-");
		monthEndDate = QString("09-");
	}
	else
	{
		dayEndDate = QString("31");
		monthBeginDate = QString("10-");
		monthEndDate = QString("12-");
	}

	QString seasonBegin = yearDate + monthBeginDate + dayBeginDate + timeBegin;
	QString seasonEnd = yearDate + monthEndDate + dayEndDate + timeEnd;

	QDateTime dateTimeBegin = QDateTime::fromString(seasonBegin, "yyyy-MM-dd hh:mm:ss");
	QDateTime dateTimeEnd = QDateTime::fromString(seasonEnd, "yyyy-MM-dd hh:mm:ss");
	ui->dateTimeEditBegin->setDateTime(dateTimeBegin);
	ui->dateTimeEditEnd->setDateTime(dateTimeEnd);
}
 
// 函数说明：combox时间选择年时 
void MainWindow::comboxSelectYearIndex()
{
	QDate curDate = QDate::currentDate();
	QString yearDate = QString("%1-").arg(curDate.year());
	QString yearBegin = yearDate + QString("01-") + QString("01") + QString(" 00:00:00");
	QString yearEnd = yearDate + QString("12-") + QString("30") + QString(" 23:59:59");
	QDateTime dateTimeBegin = QDateTime::fromString(yearBegin, "yyyy-MM-dd hh:mm:ss");
	QDateTime dateTimeEnd = QDateTime::fromString(yearEnd, "yyyy-MM-dd hh:mm:ss");
	ui->dateTimeEditBegin->setDateTime(dateTimeBegin);
	ui->dateTimeEditEnd->setDateTime(dateTimeEnd);
}