有时候，我们会有很多很多的控件数据需要保存，比如说QLineEdit的text，或者说QSpinBox的value.手动去维护，太烦人.于是，我就整理了一下，让数据可以自动的保存和读取.
说明一下，我这里没有写完所有的控件，但是框架我已经给你搭好了，希望能给你启迪.
.h文件
#include <QWidget>
#include <QLineEdit>
#include <QTextEdit>
#include <QSpinBox>
#include <QDoubleSpinBox>
#include <QTimeEdit>
#include <QDateEdit>
#include <QDateTimeEdit>
#include <QDial>
#include <QSlider>
#include <QAbstractSlider>
#include <QLabel>
#include <QTextBrowser>
#include <QLCDNumber>
#include <QProgressBar>
#include <QRadioButton>
#include <QCheckBox>
class JasonQt_Settings_WidgetDataControl
{
public:
enum controlFlagsEnum
{
controlFlagsRecursion = 0x1,
controlFlagsPos = 0x2,
controlFlagsSize = 0x4,
controlFlagsGeometry = 0x6,
controlFlagsEnabled = 0x8,
controlFlagsQLineEdit = 0x10,
controlFlagsQTextEdit = 0x20,
controlFlagsQSpinBox = 0x40,
controlFlagsQDoubleSpinBox = 0x80,
controlFlagsQTimeEdit = 0x100,
controlFlagsQDateEdit = 0x200,
controlFlagsQDateTimeEdit = 0x400,
controlFlagsQDial = 0x800,
controlFlagsQSlider = 0x1000,
controlFlagsQAbstractSlider = 0x2000,
controlFlagsInputWidgets = 0xfff0,
controlFlagsQLabel = 0x10000,
controlFlagsQTextBrowser = 0x20000,
controlFlagsQLCDNumber = 0x40000,
controlFlagsQProgressBar = 0x80000,
controlFlagsDisplayWidgets = 0xf0000,
controlFlagsQRadioButton = 0x1000000,
controlFlagsQCheckBox = 0x2000000,
controlFlagsButtons = 0xf000000,
controlFlagsAll = 0xffffffff
};
public:
static void save(QSettings *settings, const QWidget *widget, const controlFlagsEnum &controlFlags);
static void read(QSettings *settings, QWidget *widget, const controlFlagsEnum &controlFlags);
};
.cpp文件
void JasonQt_Settings_WidgetDataControl::save(QSettings *settings, const QWidget *widget, const controlFlagsEnum &controlFlags)
{
if(widget->objectName().isEmpty()) { return; }
settings->beginGroup(widget->objectName());
const QObjectList children = widget->children();
foreach(QObject *now, children)
{
if(now->objectName().isEmpty()) { continue; }
if(now->objectName().indexOf("qt_") == 0) { continue; }
if((controlFlags & controlFlagsPos) && now->inherits("QWidget"))
{
settings->setValue(now->objectName() + ".pos", qobject_cast<QWidget *>(now)->pos());
}
if((controlFlags & controlFlagsSize) && now->inherits("QWidget"))
{
settings->setValue(now->objectName() + ".size", qobject_cast<QWidget *>(now)->size());
}
if((controlFlags & controlFlagsEnabled) && now->inherits("QWidget"))
{
settings->setValue(now->objectName() + ".enabled", qobject_cast<QWidget *>(now)->isEnabled());
}
if((controlFlags & controlFlagsQLineEdit) && now->inherits("QLineEdit"))
{
settings->setValue(now->objectName() + ".QLineEdit", qobject_cast<QLineEdit *>(now)->text());
continue;
}
if((controlFlags & controlFlagsQTextEdit) && now->inherits("QTextEdit"))
{
settings->setValue(now->objectName() + ".QTextEdit", qobject_cast<QTextEdit *>(now)->toPlainText());
continue;
}
if((controlFlags & controlFlagsQSpinBox) && now->inherits("QSpinBox"))
{
settings->setValue(now->objectName() + ".QSpinBox", qobject_cast<QSpinBox *>(now)->value());
continue;
}
if((controlFlags & controlFlagsQDoubleSpinBox) && now->inherits("QDoubleSpinBox"))
{
settings->setValue(now->objectName() + ".QDoubleSpinBox", qobject_cast<QDoubleSpinBox *>(now)->value());
continue;
}
if((controlFlags & controlFlagsQTimeEdit) && now->inherits("QTimeEdit"))
{
settings->setValue(now->objectName() + ".QTimeEdit", qobject_cast<QTimeEdit *>(now)->time());
continue;
}
if((controlFlags & controlFlagsQDateEdit) && now->inherits("QDateEdit"))
{
settings->setValue(now->objectName() + ".QDateEdit", qobject_cast<QDateEdit *>(now)->date());
continue;
}
if((controlFlags & controlFlagsQDateTimeEdit) && now->inherits("QDateTimeEdit"))
{
settings->setValue(now->objectName() + ".QDateTimeEdit", qobject_cast<QDateTimeEdit *>(now)->dateTime());
continue;
}
if((controlFlags & controlFlagsQDial) && now->inherits("QDial"))
{
settings->setValue(now->objectName() + ".QDial", qobject_cast<QDial *>(now)->value());
continue;
}
if((controlFlags & controlFlagsQSlider) && now->inherits("QSlider"))
{
settings->setValue(now->objectName() + ".QSlider", qobject_cast<QSlider *>(now)->value());
continue;
}
if((controlFlags & controlFlagsQAbstractSlider) && now->inherits("QAbstractSlider"))
{
settings->setValue(now->objectName() + ".QAbstractSlider", qobject_cast<QAbstractSlider *>(now)->value());
continue;
}
if((controlFlags & controlFlagsQLabel) && now->inherits("QLabel"))
{
settings->setValue(now->objectName() + ".QLabel", qobject_cast<QLabel *>(now)->text());
continue;
}
if((controlFlags & controlFlagsQTextBrowser) && now->inherits("QTextBrowser"))
{
settings->setValue(now->objectName() + ".QTextBrowser", qobject_cast<QTextBrowser *>(now)->toPlainText());
continue;
}
if((controlFlags & controlFlagsQLCDNumber) && now->inherits("QLCDNumber"))
{
settings->setValue(now->objectName() + ".QLCDNumber", qobject_cast<QLCDNumber *>(now)->value());
continue;
}
if((controlFlags & controlFlagsQProgressBar) && now->inherits("QProgressBar"))
{
settings->setValue(now->objectName() + ".QProgressBar", qobject_cast<QProgressBar *>(now)->value());
continue;
}
if((controlFlags & controlFlagsQRadioButton) && now->inherits("QRadioButton"))
{
settings->setValue(now->objectName() + ".QRadioButton", qobject_cast<QRadioButton *>(now)->isChecked());
continue;
}
if((controlFlags & controlFlagsQCheckBox) && now->inherits("QCheckBox"))
{
settings->setValue(now->objectName() + ".QCheckBox", qobject_cast<QCheckBox *>(now)->isChecked());
continue;
}
}
if(controlFlags & controlFlagsRecursion)
{
foreach(QObject *now, children)
{
if(now->inherits("QWidget"))
{
save(settings, qobject_cast<QWidget *>(now), controlFlags);
}
}
}
settings->endGroup();
}
void JasonQt_Settings_WidgetDataControl::read(QSettings *settings, QWidget *widget, const controlFlagsEnum &controlFlags)
{
if(widget->objectName().isEmpty()) { return; }
settings->beginGroup(widget->objectName());
const QObjectList children = widget->children();
foreach(QObject *now, children)
{
if(now->objectName().isEmpty()) { continue; }
if(now->objectName().indexOf("qt_") == 0) { continue; }
if((controlFlags & controlFlagsPos) && now->inherits("QWidget") && settings->contains(now->objectName() + ".pos"))
{
qobject_cast<QWidget *>(now)->move(settings->value(now->objectName() + ".pos").toPoint());
}
if((controlFlags & controlFlagsSize) && now->inherits("QWidget") && settings->contains(now->objectName() + ".size"))
{
qobject_cast<QWidget *>(now)->resize(settings->value(now->objectName() + ".size").toSize());
}
if((controlFlags & controlFlagsSize) && now->inherits("QWidget") && settings->contains(now->objectName() + ".enabled"))
{
qobject_cast<QWidget *>(now)->setEnabled(settings->value(now->objectName() + ".enabled").toBool());
}
if((controlFlags & controlFlagsQLineEdit) && now->inherits("QLineEdit") && settings->contains(now->objectName() + ".QLineEdit"))
{
qobject_cast<QLineEdit *>(now)->setText(settings->value(now->objectName() + ".QLineEdit").toString());
continue;
}
if((controlFlags & controlFlagsQTextEdit) && now->inherits("QTextEdit") && settings->contains(now->objectName() + ".QTextEdit"))
{
qobject_cast<QTextEdit *>(now)->setPlainText(settings->value(now->objectName() + ".QTextEdit").toString());
continue;
}
if((controlFlags & controlFlagsQSpinBox) && now->inherits("QSpinBox") && settings->contains(now->objectName() + ".QSpinBox"))
{
qobject_cast<QSpinBox *>(now)->setValue(settings->value(now->objectName() + ".QSpinBox").toInt());
continue;
}
if((controlFlags & controlFlagsQDoubleSpinBox) && now->inherits("QDoubleSpinBox") && settings->contains(now->objectName() + ".QDoubleSpinBox"))
{
qobject_cast<QDoubleSpinBox *>(now)->setValue(settings->value(now->objectName() + ".QDoubleSpinBox").toDouble());
continue;
}
if((controlFlags & controlFlagsQTimeEdit) && now->inherits("QTimeEdit") && settings->contains(now->objectName() + ".QTimeEdit"))
{
qobject_cast<QTimeEdit *>(now)->setTime(settings->value(now->objectName() + ".QTimeEdit").toTime());
continue;
}
if((controlFlags & controlFlagsQDateEdit) && now->inherits("QDateEdit") && settings->contains(now->objectName() + ".QDateEdit"))
{
qobject_cast<QDateEdit *>(now)->setDate(settings->value(now->objectName() + ".QDateEdit").toDate());
continue;
}
if((controlFlags & controlFlagsQDateTimeEdit) && now->inherits("QDateTimeEdit") && settings->contains(now->objectName() + ".QDateTimeEdit"))
{
qobject_cast<QDateTimeEdit *>(now)->setDateTime(settings->value(now->objectName() + ".QDateTimeEdit").toDateTime());
continue;
}
if((controlFlags & controlFlagsQDial) && now->inherits("QDial") && settings->contains(now->objectName() + ".QDial"))
{
qobject_cast<QDial *>(now)->setValue(settings->value(now->objectName() + ".QDial").toInt());
continue;
}
if((controlFlags & controlFlagsQSlider) && now->inherits("QSlider") && settings->contains(now->objectName() + ".QSlider"))
{
qobject_cast<QSlider *>(now)->setValue(settings->value(now->objectName() + ".QSlider").toInt());
continue;
}
if((controlFlags & controlFlagsQAbstractSlider) && now->inherits("QAbstractSlider") && settings->contains(now->objectName() + ".QAbstractSlider"))
{
qobject_cast<QAbstractSlider *>(now)->setValue(settings->value(now->objectName() + ".QAbstractSlider").toInt());
continue;
}
if((controlFlags & controlFlagsQLabel) && now->inherits("QLabel") && settings->contains(now->objectName() + ".QLabel"))
{
qobject_cast<QLabel *>(now)->setText(settings->value(now->objectName() + ".QLabel").toString());
continue;
}
if((controlFlags & controlFlagsQTextBrowser) && now->inherits("QTextBrowser") && settings->contains(now->objectName() + ".QTextBrowser"))
{
qobject_cast<QTextBrowser *>(now)->setText(settings->value(now->objectName() + ".QTextBrowser").toString());
continue;
}
if((controlFlags & controlFlagsQLCDNumber) && now->inherits("QLCDNumber") && settings->contains(now->objectName() + ".QLCDNumber"))
{
qobject_cast<QLCDNumber *>(now)->display(settings->value(now->objectName() + ".QLCDNumber").toInt());
continue;
}
if((controlFlags & controlFlagsQProgressBar) && now->inherits("QProgressBar") && settings->contains(now->objectName() + ".QProgressBar"))
{
qobject_cast<QProgressBar *>(now)->setValue(settings->value(now->objectName() + ".QProgressBar").toInt());
continue;
}
if((controlFlags & controlFlagsQRadioButton) && now->inherits("QRadioButton") && settings->contains(now->objectName() + ".QRadioButton"))
{
qobject_cast<QRadioButton *>(now)->setChecked(settings->value(now->objectName() + ".QRadioButton").toBool());
continue;
}
if((controlFlags & controlFlagsQCheckBox) && now->inherits("QCheckBox") && settings->contains(now->objectName() + ".QCheckBox"))
{
qobject_cast<QCheckBox *>(now)->setChecked(settings->value(now->objectName() + ".QCheckBox").toBool());
continue;
}
}
if(controlFlags & controlFlagsRecursion)
{
foreach(QObject *now, children)
{
if(now->inherits("QWidget"))
{
read(settings, qobject_cast<QWidget *>(now), controlFlags);
}
}
}
settings->endGroup();
}
读取
QSettings settings("/Users/Jason/Test.txt", QSettings::IniFormat);
JasonQt_Settings_WidgetDataControl::read(&settings, m_ui->centralWidget, JasonQt_Settings_WidgetDataControl::controlFlagsAll);
保存
QSettings settings("/Users/Jason/Test.txt", QSettings::IniFormat);
JasonQt_Settings_WidgetDataControl::save(&settings, m_ui->centralWidget, JasonQt_Settings_WidgetDataControl::controlFlagsAll);
效果：
作者：wsj
