QTableView 自定义列
在QTableView的一列里添加两个按钮，之前添加一个按钮的思路是一样的，只是计算了一下按钮的宽，放两个按钮而已。
自定义了两列。。。使用了QItemDelegate类，建立的时候要确定继承。。。
QTable QTree QList 都是同一种方式。
看一下列的效果
看一下添加两个按钮的效果点击第一个按钮弹出 but1 +当前列 点击第二个按钮弹出but2 + 当前行
下面是主要实现
继承自 QItemDelegate
主要是实现 了它的painter方法，把两个自定义的按钮绘制到视图并保存
还有editorEvent事件，用来处理点击事件，在点击时我们算一下鼠标的坐标在哪个按钮下，
再处理相应的点击事件
#ifndef BUTTONDELEGATE_H
#define BUTTONDELEGATE_H
#include
class ButtonDelegate : public QItemDelegate
{
Q_OBJECT
public:
explicit ButtonDelegate(QObject *parent = 0);
void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
bool editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index);
signals:
public slots:
private:
void showMsg(QString str);
private:
typedef QMap* > collButtons;
collButtons m_btns;
};
#endif // BUTTONDELEGATE_H #include "buttondelegate.h"
#include
#include
#include
#include
#include
#include
ButtonDelegate::ButtonDelegate(QObject *parent) :
QItemDelegate(parent)
{
}
void ButtonDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
QPair* buttons = m_btns.value(index);
if (!buttons) {
QStyleOptionButton* button1 = new QStyleOptionButton();
//button1->rect = option.rect.adjusted(4, 4, -(option.rect.width() / 2 + 4) , -4); //
button1->text = "X";
button1->state |= QStyle::State_Enabled;
QStyleOptionButton* button2 = new QStyleOptionButton();
//button2->rect = option.rect.adjusted(button1->rect.width() + 4, 4, -4, -4);
button2->text = "Y";
button2->state |= QStyle::State_Enabled;
buttons =new QPair(button1, button2);
(const_cast(this))->m_btns.insert(index, buttons);
}
buttons->first->rect = option.rect.adjusted(4, 4, -(option.rect.width() / 2 + 4) , -4); //
buttons->second->rect = option.rect.adjusted(buttons->first->rect.width() + 4, 4, -4, -4);
painter->save();
if (option.state & QStyle::State_Selected) {
painter->fillRect(option.rect, option.palette.highlight());
}
painter->restore();
QApplication::style()->drawControl(QStyle::CE_PushButton, buttons->first, painter);
QApplication::style()->drawControl(QStyle::CE_PushButton, buttons->second, painter);
}
bool ButtonDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
{
if (event->type() == QEvent::MouseButtonPress) {
QMouseEvent* e =(QMouseEvent*)event;
if (m_btns.contains(index)) {
QPair* btns = m_btns.value(index);
if (btns->first->rect.contains(e->x(), e->y())) {
btns->first->state |= QStyle::State_Sunken;
}
else if(btns->second->rect.contains(e->x(), e->y())) {
btns->second->state |= QStyle::State_Sunken;
}
}
}
if (event->type() == QEvent::MouseButtonRelease) {
QMouseEvent* e =(QMouseEvent*)event;
if (m_btns.contains(index)) {
QPair* btns = m_btns.value(index);
if (btns->first->rect.contains(e->x(), e->y())) {
btns->first->state &= (~QStyle::State_Sunken);
showMsg(tr("btn1 column %1").arg(index.column()));
} else if(btns->second->rect.contains(e->x(), e->y())) {
btns->second->state &= (~QStyle::State_Sunken);
showMsg(tr("btn2 row %1").arg(index.row()));
}
}
}
}
void ButtonDelegate::showMsg(QString str)
{
QMessageBox msg;
msg.setText(str);
msg.exec();
} 好了自定义按钮处理完了
我们建一个Table添加一些数据
#ifndef TABLEMODEL_H
#define TABLEMODEL_H
#include
class TableModel : public QAbstractTableModel
{
Q_OBJECT
public:
explicit TableModel(QObject *parent = 0);
int rowCount(const QModelIndex &parent) const;
int columnCount(const QModelIndex &parent) const;
QVariant data(const QModelIndex &index, int role) const;
Qt::ItemFlags flags(const QModelIndex &index) const;
void setHorizontalHeader(const QStringList& headers);
QVariant headerData(int section, Qt::Orientation orientation, int role) const;
void setData(const QVector& data);
QVector& DataVector() {return m_data;}
~TableModel(void);
signals:
public slots:
private:
QStringList m_HorizontalHeader;
QVector m_data;
};
#endif // TABLEMODEL_H #include "tablemodel.h"
TableModel::TableModel(QObject *parent) :
QAbstractTableModel(parent)
{
}
TableModel::~TableModel()
{
}
int TableModel::rowCount(const QModelIndex &parent) const
{
return m_data.size();
}
int TableModel::columnCount(const QModelIndex &parent) const
{
return m_HorizontalHeader.count();
}
QVariant TableModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
if (role == Qt::DisplayRole) {
int ncol = index.column();
int nrow = index.row();
QStringList values = m_data.at(nrow);
if (values.size() > ncol)
return values.at(ncol);
else
return QVariant();
}
return QVariant();
}
Qt::ItemFlags TableModel::flags(const QModelIndex &index) const
{
if (!index.isValid())
return Qt::NoItemFlags;
Qt::ItemFlags flag = QAbstractItemModel::flags(index);
// flag|=Qt::ItemIsEditable // 设置单元格可编辑,此处注释,单元格无法被编辑
return flag;
}
void TableModel::setHorizontalHeader(const QStringList &headers)
{
m_HorizontalHeader = headers;
}
QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role == Qt::DisplayRole && orientation == Qt::Horizontal) {
return m_HorizontalHeader.at(section);
}
return QAbstractTableModel::headerData(section, orientation, role);
}
void TableModel::setData(const QVector &data)
{
m_data = data;
} #ifndef TABLEVIEW_H
#define TABLEVIEW_H
#include
#include "tablemodel.h"
#include "buttondelegate.h"
class TableView : public QTableView
{
Q_OBJECT
public:
explicit TableView(QWidget *parent = 0);
TableModel* tableModel() {return m_model;}
~TableView();
signals:
public slots:
private:
void iniData();
private:
TableModel *m_model;
ButtonDelegate *m_buttonDelegate;
};
#endif // TABLEVIEW_H #include "tableview.h"
#include "tablemodel.h"
#include "buttondelegate.h"
TableView::TableView(QWidget *parent) :
QTableView(parent)
{
iniData();
}
TableView::~TableView()
{
delete m_model;
}
void TableView::iniData()
{
m_model = new TableModel();
this->setModel(m_model);
QStringList headers;
headers << "Id" << "Progress";
m_model->setHorizontalHeader(headers);
QVector data;
data.append(QStringList() << "1" << "22");
data.append(QStringList() << "2" << "32");
data.append(QStringList() << "3" << "2");
data.append(QStringList() << "4" << "80");
data.append(QStringList() << "5" << "40");
m_model->setData(data);
m_buttonDelegate = new ButtonDelegate(this);
this->setItemDelegateForColumn(1, m_buttonDelegate);
emit m_model->layoutChanged();
this->setColumnWidth(1, 500);
} 这就完成了
我们看一下调用
this->resize(800, 600);
TableView *tv = new TableView(this);
QVBoxLayout* layout = new QVBoxLayout();
layout->addWidget(tv);
this->setLayout(layout);