实现
mititlebar.h
/**
* @brief 通用的标题栏控件
* @author swang
* @date 2020-08-04
*/
#ifndef MITITLEBAR_H
#define MITITLEBAR_H#include <QWidget>
class QPushButton;
class QLabel;
class MiTiTleBar : public QWidget
{Q_OBJECT
public:explicit MiTiTleBar(QWidget *parent = nullptr);void setTitleIcon (const QString& imagePath)const; /*设置标题图片*/void setTitleText (const QString& titleText)const; /*设置标题文字*/void setMaxBtnIcon (const QString& imagePath)const; /*设置最大化按钮的图片*/void setMinBtnIcon (const QString& imagePath)const; /*设置最小化按钮的图片*/void setCloseBtnIcon(const QString& imagePath)const; /*设置关闭按钮的图片*/void setTitleBg (const QColor& color){m_color = color;update();}protected:virtual void mouseDoubleClickEvent(QMouseEvent *event)override; /*双击标题栏进行界面的最大化*/virtual bool eventFilter(QObject *obj, QEvent *event)override; /*进行鼠界面的拖动*/private slots:void on_btnClicked();private:void initForm();void updateMaximize();/*最大化/还原*/QLabel * m_pIconLbl;QLabel * m_pTitleLbl;QPushButton* m_pMinBtn;QPushButton* m_pMaxBtn;QPushButton* m_pCloseBtn;QColor m_color;
};#endif // MITITLEBAR_H
mititlebar.cpp
/**
* @brief 通用的标题栏
* @author swang
* @date 2020-08-04
*/#include <QPushButton>
#include <QLabel>
#include <QPainter>
#include <QHBoxLayout>
#include <QDebug>
#include <QMouseEvent>#include "mititlebar.h"MiTiTleBar::MiTiTleBar(QWidget *parent): QWidget(parent)
{initForm();m_color = QColor(50,50,50,153);installEventFilter(this);
}/**
* @author swang
* @date 2020-08-04
* @brief 初始化标题栏样式
*/
void MiTiTleBar::initForm()
{const QSize btnSize(32,32);const QSize iconSize(24,24);m_pIconLbl = new QLabel;m_pTitleLbl = new QLabel;m_pMinBtn = new QPushButton;m_pMaxBtn = new QPushButton;m_pCloseBtn = new QPushButton;this->setObjectName("MiTitle");m_pCloseBtn->setObjectName("titleClose");m_pIconLbl->setFixedSize(btnSize);m_pIconLbl->setScaledContents(true);m_pTitleLbl->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);m_pMinBtn->setFixedSize(btnSize);m_pMaxBtn->setFixedSize(btnSize);m_pCloseBtn->setFixedSize(btnSize);m_pCloseBtn->setIconSize(iconSize);m_pMaxBtn->setIconSize(iconSize);m_pMinBtn->setIconSize(iconSize);QHBoxLayout *pLayout = new QHBoxLayout(this);pLayout->addWidget(m_pIconLbl);pLayout->addSpacing(0);pLayout->addWidget(m_pTitleLbl);pLayout->addWidget(m_pMinBtn);pLayout->addWidget(m_pMaxBtn);pLayout->addWidget(m_pCloseBtn);pLayout->setSpacing(0);pLayout->setContentsMargins(0, 0, 0, 0);//左上右下setLayout(pLayout);connect(m_pMinBtn,&QPushButton::clicked,this,&MiTiTleBar::on_btnClicked);connect(m_pMaxBtn,&QPushButton::clicked,this,&MiTiTleBar::on_btnClicked);connect(m_pCloseBtn,&QPushButton::clicked,this,&MiTiTleBar::on_btnClicked);this->setStyleSheet("QWidget{background-color:rgba(50,50,50,153);}QPushButton{border:none;}""QPushButton::hover{background-color:rgba(26,26,26,153);}""QPushButton#titleClose::hover{background-color:rgba(220,20,60,200);}");
}/**
* @author swang
* @date 2020-08-04
* @brief 最大化/还原
*/
void MiTiTleBar::updateMaximize()
{QWidget *pWindow = this->window();if (pWindow->isTopLevel()){bool bMaximize = pWindow->isMaximized();if (bMaximize){m_pMaxBtn->setToolTip(tr("还原"));}else{m_pMaxBtn->setToolTip(tr("最大化"));}}
}/**
* @author swang
* @date 2020-08-04
* @brief 双击标题栏进行界面的最大化/还原
* @parameter [event]:鼠标双击事件
*/
void MiTiTleBar::mouseDoubleClickEvent(QMouseEvent *event)
{Q_UNUSED(event);emit m_pMaxBtn->clicked();
}/**
* @author swang
* @date 2020-08-04
* @brief 进行鼠界面的拖动
* @parameter [obj]:接受事件的对象 | [event]待处理的事件
*/
bool MiTiTleBar::eventFilter(QObject *obj, QEvent *evt)
{if(obj->objectName()=="pTitleBar"){QWidget *pWindow = this->window();static QPoint mousePoint;static bool mousePressed = false;QMouseEvent *event = static_cast<QMouseEvent *>(evt);if (event->type() == QEvent::MouseButtonPress) {qDebug()<<obj->objectName();if (event->button() == Qt::LeftButton) {mousePressed = true;mousePoint = event->globalPos() - pWindow->pos();return true;}} else if (event->type() == QEvent::MouseButtonRelease) {mousePressed = false;return true;} else if (event->type() == QEvent::MouseMove) {if (mousePressed && (event->buttons() & Qt::LeftButton)) {pWindow->move(event->globalPos() - mousePoint);return true;}}}return QWidget::eventFilter(obj,evt);}/**
* @author swang
* @date 2020-08-04
* @brief 响应点击事件
*/
void MiTiTleBar::on_btnClicked()
{QPushButton *pButton = qobject_cast<QPushButton *>(sender());QWidget *pWindow = this->window();if (pWindow->isTopLevel()){if (pButton == m_pMinBtn){pWindow->showMinimized();}else if (pButton == m_pMaxBtn){pWindow->isMaximized() ? pWindow->showNormal() : pWindow->showMaximized();}else if (pButton == m_pCloseBtn){pWindow->close();}}}void MiTiTleBar::setTitleIcon(const QString &imagePath)const
{QPixmap image(imagePath); //保持长宽比 //平滑转换QPixmap fitpixmap=image.scaled(m_pIconLbl->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);m_pIconLbl->setPixmap(fitpixmap);
}void MiTiTleBar::setTitleText(const QString &titleText) const
{m_pTitleLbl->setText(titleText);
}void MiTiTleBar::setMaxBtnIcon(const QString &imagePath) const
{QPixmap image(imagePath); //保持长宽比 //平滑转换QPixmap fitpixmap=image.scaled(m_pMaxBtn->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);m_pMaxBtn->setIcon(QIcon(fitpixmap));
}void MiTiTleBar::setMinBtnIcon(const QString &imagePath) const
{QPixmap image(imagePath);QPixmap fitpixmap=image.scaled(m_pMinBtn->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);m_pMinBtn->setIcon(QIcon(fitpixmap));
}void MiTiTleBar::setCloseBtnIcon(const QString &imagePath) const
{QPixmap image(imagePath);QPixmap fitpixmap=image.scaled(m_pCloseBtn->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);m_pCloseBtn->setIcon(QIcon(fitpixmap));
}