[Qt] CFlip 翻页功能实现

#ifndef CFLIP_H
#define CFLIP_H

#include <QWidget>
#include <QPushButton>
#include <QLabel>
#include <QComboBox>
#include <QEvent>

class CFlip : public QWidget
{
Q_OBJECT
public:
CFlip(QWidget *parent = 0);
~CFlip();

int m_iSetPageInfo(int iAllPageNum, int iCurPageNo);

signals:
void sigPageChanged(int iPageNo);

public slots:
void slot_GotoPrePageBtn_clicked();
void slot_FirstPageBtn_clicked();
void slot_PrePageBtn_clicked();
void slot_CurPageBtn_clicked();
void slot_NextPageBtn_clicked();
void slot_LastPageBtn_clicked();
void slot_GotoNextPageBtn_clicked();

protected:
bool eventFilter(QObject *obj, QEvent *event);

private:
QPushButton *m_oGotoPrePageBtn;
QPushButton *m_oFirstPageBtn;
QPushButton *m_oPrePageBtn;
QPushButton *m_oCurPageBtn;
QPushButton *m_oNextPageBtn;
QPushButton *m_oLastPageBtn;
QPushButton *m_oGotoNextPageBtn;

int m_iAllPageNum;
int m_iCurPageNo;
};

#endif // CFLIP_H

#include "flip.h"
#include <QHBoxLayout>

CFlip::CFlip(QWidget *parent)
: QWidget(parent)
{
m_iAllPageNum = 1;
m_iCurPageNo = 1;

m_oGotoPrePageBtn = new QPushButton(this);
m_oFirstPageBtn = new QPushButton(this);
m_oPrePageBtn = new QPushButton(this);
m_oCurPageBtn = new QPushButton(this);
m_oNextPageBtn = new QPushButton(this);
m_oLastPageBtn = new QPushButton(this);
m_oGotoNextPageBtn = new QPushButton(this);

m_oGotoPrePageBtn->setMinimumSize(56, 23);
m_oFirstPageBtn->setMinimumSize(33, 23);
m_oPrePageBtn->setMinimumSize(23, 23);
m_oCurPageBtn->setMinimumSize(23, 23);
m_oNextPageBtn->setMinimumSize(23, 23);
m_oLastPageBtn->setMinimumSize(33, 23);
m_oGotoNextPageBtn->setMinimumSize(56, 23);

m_oGotoPrePageBtn->setMaximumSize(56, 23);
m_oFirstPageBtn->setMaximumSize(33, 23);
m_oPrePageBtn->setMaximumSize(23, 23);
m_oCurPageBtn->setMaximumSize(23, 23);
m_oNextPageBtn->setMaximumSize(23, 23);
m_oLastPageBtn->setMaximumSize(33, 23);
m_oGotoNextPageBtn->setMaximumSize(56, 23);

m_oGotoPrePageBtn->setText(tr("Prev"));
m_oFirstPageBtn->setText(tr("1..."));
m_oPrePageBtn->setText(tr("1"));
m_oCurPageBtn->setText(tr("1"));
m_oNextPageBtn->setText(tr("1"));
m_oLastPageBtn->setText(tr("...1"));
m_oGotoNextPageBtn->setText(tr("Next"));

QHBoxLayout *pHLayout = new QHBoxLayout();
pHLayout->setContentsMargins(1, 1, 1, 1);
pHLayout->addStretch();
pHLayout->addWidget(m_oGotoPrePageBtn);
pHLayout->addWidget(m_oFirstPageBtn);
pHLayout->addWidget(m_oPrePageBtn);
pHLayout->addWidget(m_oCurPageBtn);
pHLayout->addWidget(m_oNextPageBtn);
pHLayout->addWidget(m_oLastPageBtn);
pHLayout->addWidget(m_oGotoNextPageBtn);
this->setLayout(pHLayout);
this->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
this->setMaximumSize(295, 23);

m_oFirstPageBtn->setHidden(true);
m_oPrePageBtn->setHidden(true);
m_oNextPageBtn->setHidden(true);
m_oLastPageBtn->setHidden(true);

this->setStyleSheet(
"QPushButton{border:1px solid #D7E2EE; border-radius:4px; background:#F5F5F5; color:#000; margin:1px;}"
"QPushButton:hover{border:1px solid #C5D3E3}"
);
m_oCurPageBtn->setStyleSheet("background: #006699;");

m_oGotoPrePageBtn->installEventFilter(this);
m_oFirstPageBtn->installEventFilter(this);
m_oPrePageBtn->installEventFilter(this);
m_oCurPageBtn->installEventFilter(this);
m_oNextPageBtn->installEventFilter(this);
m_oLastPageBtn->installEventFilter(this);
m_oGotoNextPageBtn->installEventFilter(this);

connect(m_oGotoPrePageBtn, SIGNAL(clicked()), this, SLOT(slot_GotoPrePageBtn_clicked()));
connect(m_oFirstPageBtn, SIGNAL(clicked()), this, SLOT(slot_FirstPageBtn_clicked()));
connect(m_oPrePageBtn, SIGNAL(clicked()), this, SLOT(slot_PrePageBtn_clicked()));
connect(m_oCurPageBtn, SIGNAL(clicked()), this, SLOT(slot_CurPageBtn_clicked()));
connect(m_oNextPageBtn, SIGNAL(clicked()), this, SLOT(slot_NextPageBtn_clicked()));
connect(m_oLastPageBtn, SIGNAL(clicked()), this, SLOT(slot_LastPageBtn_clicked()));
connect(m_oGotoNextPageBtn, SIGNAL(clicked()), this, SLOT(slot_GotoNextPageBtn_clicked()));

}

CFlip::~CFlip()
{

}

int
CFlip::m_iSetPageInfo(int iAllPageNum, int iCurPageNo)
{
if(iAllPageNum <= 0 || iCurPageNo <= 0 || iAllPageNum<iCurPageNo)
{
return -1;
}

m_iAllPageNum = iAllPageNum;
m_iCurPageNo = iCurPageNo;

m_oGotoPrePageBtn->setHidden(false);
m_oFirstPageBtn->setHidden(false);
m_oPrePageBtn->setHidden(false);
m_oCurPageBtn->setHidden(false);
m_oNextPageBtn->setHidden(false);
m_oLastPageBtn->setHidden(false);
m_oGotoNextPageBtn->setHidden(false);

m_oCurPageBtn->setText(QString::number(iCurPageNo, 10));
if(iCurPageNo==1)
{
m_oFirstPageBtn->setHidden(true);
m_oPrePageBtn->setHidden(true);
}
else if(iCurPageNo==2)
{
m_oFirstPageBtn->setHidden(true);
m_oPrePageBtn->setText(tr("1"));
}
else
{
m_oFirstPageBtn->setText(tr("1..."));
m_oPrePageBtn->setText(QString::number(iCurPageNo-1, 10));
}

if(iCurPageNo == iAllPageNum)
{
m_oNextPageBtn->setHidden(true);
m_oLastPageBtn->setHidden(true);
}
else if(iCurPageNo+1 == iAllPageNum)
{
m_oLastPageBtn->setHidden(true);
m_oNextPageBtn->setText(QString::number(iCurPageNo+1, 10));
}
else
{
m_oNextPageBtn->setText(QString::number(iCurPageNo+1, 10));
m_oLastPageBtn->setText(tr("...")+QString::number(m_iAllPageNum, 10));
}
return 0;
}

void
CFlip::slot_GotoPrePageBtn_clicked()
{
if(m_iSetPageInfo(m_iAllPageNum, m_iCurPageNo-1) == 0)
{
emit sigPageChanged(m_iCurPageNo);
}
}

void
CFlip::slot_FirstPageBtn_clicked()
{
if(m_iSetPageInfo(m_iAllPageNum, 1) == 0)
{
emit sigPageChanged(m_iCurPageNo);
}
}

void
CFlip::slot_PrePageBtn_clicked()
{
if(m_iSetPageInfo(m_iAllPageNum, m_iCurPageNo-1) == 0)
{
emit sigPageChanged(m_iCurPageNo);
}
}

void
CFlip::slot_CurPageBtn_clicked()
{
return;
}

void
CFlip::slot_NextPageBtn_clicked()
{
if(m_iSetPageInfo(m_iAllPageNum, m_iCurPageNo+1) == 0)
{
emit sigPageChanged(m_iCurPageNo);
}
}

void
CFlip::slot_LastPageBtn_clicked()
{
if(m_iSetPageInfo(m_iAllPageNum, m_iAllPageNum) == 0)
{
emit sigPageChanged(m_iCurPageNo);
}
}

void
CFlip::slot_GotoNextPageBtn_clicked()
{
if(m_iSetPageInfo(m_iAllPageNum, m_iCurPageNo+1) == 0)
{
emit sigPageChanged(m_iCurPageNo);
}
}

bool
CFlip::eventFilter(QObject *obj, QEvent *event)
{
QPushButton *pBtn = qobject_cast<QPushButton*>(obj);
if( (m_oGotoPrePageBtn == pBtn) ||
(m_oFirstPageBtn == pBtn) ||
(m_oPrePageBtn == pBtn) ||
(m_oCurPageBtn == pBtn) ||
(m_oNextPageBtn == pBtn) ||
(m_oLastPageBtn == pBtn) ||
(m_oGotoNextPageBtn == pBtn) )
{
if(event->type() == QEvent::Enter)
{
setCursor(Qt::PointingHandCursor);
}
}
return QObject::eventFilter(obj, event);
}