QTableView 使用小例子

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于 2025-03-24 00:47:43 发布

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分类专栏： QT c++ 文章标签： QTableView Qt

本文链接：https://blog.youkuaiyun.com/chunleixiahe/article/details/146464925

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使用效果：

使用控件包括：

/*
* ReadOnly
*/
class ReadOnlyDelegate : public QItemDelegate
{
Q_OBJECT
public:
ReadOnlyDelegate(QObject *parent = 0): QItemDelegate(parent) {}

void setItems(QStringList items);

QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
return NULL;
}
};

/*
* ComboBox
*/
class ComboDelegate : public QItemDelegate
{
Q_OBJECT
public:
ComboDelegate(QObject *parent = 0);

void setItems(QStringList items);

QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const;
void setEditorData(QWidget *editor, const QModelIndex &index) const;
void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;
void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const;

private:
QStringList m_sItemList; //下拉框列表项
};

/*
* DoubleSpinBox
*/
class SpinBoxDelegate : public QItemDelegate
{
Q_OBJECT
public:
SpinBoxDelegate(QObject *parent = 0);

void setRange(double min, double max);

private:
double minValue; //最小值
double maxValue; //最大值
};

/*
* CheckBox
*/
class CheckBoxDelegate : public QStyledItemDelegate
{
Q_OBJECT
public:
CheckBoxDelegate(QObject *parent = 0);

void setColumn(int col);

protected:
void paint(QPainter* painter,const QStyleOptionViewItem& option,const QModelIndex& index) const;
bool editorEvent(QEvent *event,QAbstractItemModel *model,const QStyleOptionViewItem &option,const QModelIndex &index);

private:
int column; //设置复选框的列
};

/*
* calendar
*/
class DateDelegate : public QItemDelegate
{
Q_OBJECT
public:
DateDelegate(QObject *parent = 0);

/*
* TimeEdit
*/
class TimeDelegate : public QItemDelegate
{
Q_OBJECT
public:
TimeDelegate(QObject *parent = 0);

/*
* DoubleLineEdit
*/
class DoubleLineEditDelegate : public QItemDelegate
{
Q_OBJECT
public:
DoubleLineEditDelegate(QObject *parent = 0);

void setRange(double bottom, double top, int decimals = 0);

private:
int min; //最小值
int max; //最大值
int dec; //小数位数
};

class IntegerDelegate : public QStyledItemDelegate
{
Q_OBJECT
public:
explicit IntegerDelegate(QObject* parent = nullptr, int min = -1, int max = -1, int step = -1) : QStyledItemDelegate(parent)
{
this->min = min;
this->max = max;
this->step = step;
}

QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const override;
void setEditorData(QWidget* editor, const QModelIndex& index) const override;
void setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const override;
void updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const override;
void setMinMaxStep(int min, int max, int step);
protected:
int min{ -1 }, max{ -1 }, step{ -1 };
};

/
class NotEditableDelegate : public QStyledItemDelegate
{
Q_OBJECT
public:
explicit NotEditableDelegate(QObject* parent = nullptr)
: QStyledItemDelegate(parent)
{}

protected:
bool editorEvent(QEvent*, QAbstractItemModel*, const QStyleOptionViewItem&, const QModelIndex&) override
{
return false;
}
QWidget* createEditor(QWidget*, const QStyleOptionViewItem&, const QModelIndex&) const override
{
return nullptr;
}
};

/
// Not editable delegate to display numbers to 2 decimal places
class NotEditableDelegate2dp : public QStyledItemDelegate
{
Q_OBJECT
public:
explicit NotEditableDelegate2dp(QObject* parent = nullptr)
: QStyledItemDelegate(parent)
{}

QString displayText(const QVariant& value, const QLocale& locale) const override
{
Q_UNUSED(locale)
QString str = QString::number(value.toDouble(), 'f', 2);
return str;
}

/
class ToggleDelegate : public QItemDelegate
{
Q_OBJECT
public:
explicit ToggleDelegate(QObject* parent = nullptr) : QItemDelegate(parent) {}

QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const override;
void setEditorData(QWidget* editor, const QModelIndex& index) const override;
void updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const override;
void setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const override;
void paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const override;
bool editorEvent(QEvent* event, QAbstractItemModel* model, const QStyleOptionViewItem&, const QModelIndex& index) override;
};