QT4.7自定义标题栏简单实现

来源：互联网发布：linux集成开发环境编辑：程序博客网时间：2024/05/21 06:26

QT4.7自定标题栏简单实现：功能尚未完成，但提供了编写模版。实现：窗口拖动、标题长按。

1、定义

#ifndef QTITLEBAR_H#define QTITLEBAR_H#include <QWidget>class QHBoxLayout;class QLabel;class QPalette;class QPixmap;class QBrush;class QPoiint;class QIcon;class QCursor;class QMouseEvent;class QTitleBar : public QWidget{    Q_OBJECTpublic:    explicit QTitleBar(QWidget *parent = 0);    ~QTitleBar();    void setSize(QSize size);    void setIcon(QString sFile,QSize iconSize);    void setBackground(QString sFile);    void setText(QString sText);    void setTitle(QString sTitle);    bool isEnable();    //标题栏自定功能，可继续完善protected:    void mousePressEvent(QMouseEvent *event);    void mouseReleaseEvent(QMouseEvent *event);    void mouseMoveEvent(QMouseEvent *event);    void enterEvent(QEvent *event);    void leaveEvent(QEvent *event);private:    void initControl();signals:    void longPressSignal(QPoint point);private slots:    void onTimeOut();private:    bool m_bEnable;    //响应拖动    QHBoxLayout *m_pLayout;    QLabel *m_pIcon;//图标    QLabel *m_pText;//标题    bool m_bMousePressed;    QPoint m_oMousePressPos;    QPoint m_oMouseReleasePos;    QPoint m_oMouseMovePos;    //响应长按    QTimer *m_pTimer;    unsigned m_uTimerCntSet;    unsigned m_uTimerCnt;};#endif // QTITLEBAR_H

2、实现

#include <QHBoxLayout>#include <QLabel>#include <QPalette>#include <QPixmap>#include <QBrush>#include <QPoint>#include <QIcon>#include <QCursor>#include <QMouseEvent>#include <QTimer>#include "QTitleBar.h"#include "QHelper.h"QTitleBar::QTitleBar(QWidget *parent) :    QWidget(parent){    m_bEnable = true;    m_pLayout = NULL;    m_pIcon = NULL;    m_pText = NULL;    m_bMousePressed = false;    m_pTimer = NULL;    m_uTimerCntSet = 1;    m_uTimerCnt = 0;    this->initControl();}void QTitleBar::initControl(){    m_pLayout = new QHBoxLayout(this);    m_pIcon = new QLabel(this);    m_pText = new QLabel(this);    m_pTimer = new QTimer(this);    if(NULL == m_pLayout || NULL == m_pIcon       || NULL == m_pText || NULL == m_pTimer)    {        m_bEnable = false;    }    else    {        m_bEnable = true;        m_pLayout->addWidget(m_pIcon);        m_pLayout->addWidget(m_pText);        m_pLayout->setContentsMargins(0,0,0,0);        m_pLayout->setStretchFactor(m_pIcon,1);        m_pLayout->setStretchFactor(m_pText,10);        m_pLayout->setSpacing(0);        m_pIcon->setVisible(false);        m_pText->setVisible(false);        connect(m_pTimer,SIGNAL(timeout()),this,SLOT(onTimeOut()));    }}QTitleBar::~QTitleBar(){    QHelper::deleteP(m_pLayout);    QHelper::deleteP(m_pIcon);    QHelper::deleteP(m_pText);    QHelper::deleteP(m_pTimer);}void QTitleBar::setSize(QSize size){    this->setFixedSize(size);}void QTitleBar::setIcon(QString sFile, QSize iconSize){    if(!isEnable())        return ;    QPixmap pixmap(sFile);    m_pIcon->setPixmap(pixmap.scaled(iconSize));    if(NULL != this->parentWidget())    {        this->parentWidget()->setWindowIcon(QIcon(sFile));    }    m_pIcon->setVisible(true);}void QTitleBar::setBackground(QString sFile){    this->setAutoFillBackground(true);    QPalette palette(this->palette());    QPixmap pixmap(sFile);    palette.setBrush(QPalette::Window,QBrush(pixmap));    this->setPalette(palette);}void QTitleBar::setText(QString sText){    if(!isEnable())        return ;    m_pText->setText(sText);    m_pText->setVisible(true);}void QTitleBar::setTitle(QString sTitle){    if(NULL != this->parentWidget())    {        this->parentWidget()->setWindowTitle(sTitle);    }}void QTitleBar::mousePressEvent(QMouseEvent *event){    if(NULL == event || !isEnable())        return ;    switch(event->button())    {    case Qt::LeftButton:        {            m_bMousePressed = true;            //响应拖动            m_oMousePressPos = event->globalPos();//使用全局坐标            m_oMouseMovePos = event->globalPos();//原始坐标，判断鼠标是否有移动            //响应长按            if(!m_pTimer->isActive())            {                m_uTimerCnt = 0;                m_pTimer->start(1000);            }        }        break;    case Qt::RightButton:        break;    default:        break;    }    return QWidget::mousePressEvent(event);}void QTitleBar::mouseReleaseEvent(QMouseEvent *event){    if(NULL == event || !isEnable())        return ;    switch(event->button())    {    case Qt::LeftButton:        {            m_bMousePressed = false;            //响应长按            if(m_pTimer->isActive())            {                m_uTimerCnt = 0;                m_pTimer->stop();            }        }        break;    case Qt::RightButton:        break;    default:        break;    }    return QWidget::mouseReleaseEvent(event);}void QTitleBar::mouseMoveEvent(QMouseEvent *event){    if(NULL == event || !m_bMousePressed || !isEnable())        return ;    //响应拖动    //move event产生的button是nobutton，所以不用判断button类型    QPoint point = event->globalPos();//新位置    int iX = point.x()-m_oMouseMovePos.x();//x位移    int iY = point.y()-m_oMouseMovePos.y();//y位移    m_oMouseMovePos = event->globalPos();//更新鼠标当前位置    if(NULL != this->parentWidget())    {        QPoint win = this->parentWidget()->pos();        int x = win.x()+iX;//窗口x应该位移        int y = win.y()+iY;//窗口y应该位移        this->parentWidget()->move(x,y);    }    //响应长按    if(m_pTimer->isActive())    {        m_uTimerCnt = 0;        m_pTimer->stop();    }    return QWidget::mouseMoveEvent(event);}void QTitleBar::enterEvent(QEvent *event){    if(NULL == event || !isEnable())        return ;    this->setCursor(Qt::OpenHandCursor);}void QTitleBar::leaveEvent(QEvent *event){    if(NULL == event || !isEnable())        return ;    this->setCursor(Qt::ArrowCursor);}void QTitleBar::onTimeOut(){    //响应鼠标长按1秒事件    if(!m_bMousePressed || (++m_uTimerCnt) < m_uTimerCntSet || !isEnable())        return ;    m_uTimerCnt = 0;    m_pTimer->stop();    //当外部窗口响应长按信号时若使用模态对话框，则会阻断mouseReleaseEvent，所以此处直接false    m_bMousePressed = false;    emit longPressSignal(m_oMouseMovePos);}bool QTitleBar::isEnable(){    return m_bEnable;}

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