QT4.7自定义标题栏简单实现

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_OBJECT public: 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; }