Qt 个性化标题栏，自定义标题栏

目前还没有达到自己满意的地步，魔方别人写的的，先提供参考，后面在加入新的东西

头文件

#ifndef TITLEBAR_H

#define TITLEBAR_H

#include <QWidget>

class QLabel;

class QPushButton;

class TitleBar : public QWidget

{

    Q_OBJECT

public:

    explicit TitleBar(QWidget *parent = 0);

    ~TitleBar();

protected:

    /*

     * 双击标题栏进行界面最大化/还原

     */

    virtual void mouseDoubleClickEvent(QMouseEvent *event);

    /*

     * 进行鼠标界面的拖动

     */

    virtual void mousePressEvent(QMouseEvent *event);

    /*

     * 设置界面标题与图标

     */

    virtual bool eventFilter(QObject *watched, QEvent *event);

private slots:

    /*

     * 进行最小化、最大化/还原。关闭操作

     */

    void onClicked();

private:

    /*

     * 最大化/还原

     */

    void updateMaximize();

private:

    QLabel* m_pIconLabel;

    QLabel* m_pTitleLabel;

    QPushButton* m_pMiniMizeButton;

    QPushButton* m_pMaximizeButton;

    QPushButton* m_pCloseButton;

};

#endif // TITLEBAR_H

cpp文件

#include "titlebar.h"

#include <QLabel>

#include <QPushButton>

#include <QHBoxLayout>

#include <QEvent>

#include <QMouseEvent>

#include <QApplication>

#include <QSizePolicy>

#include <QIcon>

#ifdef Q_OS_WIN

#pragma comment(lib,"user32.lib")

#include <qt_windows.h>

#endif

TitleBar::TitleBar(QWidget *parent) : QWidget(parent)

{

    /*

     * 设置标题栏高度

     */

    this->setFixedHeight(30);

    /*

     * 初始化标题栏Button及Lable

     */

    m_pIconLabel = new QLabel(this);

    m_pTitleLabel = new QLabel(this);

    m_pMiniMizeButton = new QPushButton(this);

    m_pMaximizeButton = new QPushButton(this);

    m_pCloseButton = new QPushButton(this);

    m_pIconLabel->setFixedSize(20,20);

    m_pIconLabel->setScaledContents(true);

    m_pTitleLabel->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed);

    m_pCloseButton->setFixedSize(27,22);

    m_pMaximizeButton->setFixedSize(27,22);

    m_pMiniMizeButton->setFixedSize(27,22);

    m_pTitleLabel->setObjectName("whiteLabel");

    m_pMiniMizeButton->setObjectName("minimizeButton");

    m_pMaximizeButton->setObjectName("maximizeButton");

    m_pCloseButton->setObjectName("closeButton");

    m_pMaximizeButton->setToolTip("Maximize");

    m_pMiniMizeButton->setToolTip("Minimize");

    m_pCloseButton->setToolTip("Close");

    QHBoxLayout* pLayout = new QHBoxLayout(this);

    pLayout->addWidget(m_pIconLabel);

    pLayout->addSpacing(5);

    pLayout->addWidget(m_pTitleLabel);

    pLayout->addWidget(m_pMiniMizeButton);

    pLayout->addWidget(m_pMaximizeButton);

    pLayout->addWidget(m_pCloseButton);

    pLayout->setSpacing(0);

    this->setLayout(pLayout);

    connect(m_pMiniMizeButton,SIGNAL(clicked(bool)),this,SLOT(onClicked()));

    connect(m_pMaximizeButton,SIGNAL(clicked(bool)),this,SLOT(onClicked()));

    connect(m_pCloseButton,SIGNAL(clicked(bool)),this,SLOT(onClicked()));

}

TitleBar::~TitleBar()

{

}

void TitleBar::mouseDoubleClickEvent(QMouseEvent *event)

{

    Q_UNUSED(event);

    emit m_pMaximizeButton->click();

}

void TitleBar::mousePressEvent(QMouseEvent *event)

{

#ifdef Q_OS_WIN

    if(ReleaseCapture())

    {

        QWidget* pWindow = this->window();

        if(pWindow->isTopLevel())

        {

            SendMessage(HWND(pWindow->winId()),WM_SYSCOMMAND,SC_MOVE + HTCAPTION,0);

        }

    }

        event->ignore();

#else

#endif

}

bool TitleBar::eventFilter(QObject *watched, QEvent *event)

{

    switch (event->type()) {

    case QEvent::WindowTitleChange:

    {

        QWidget* pWidget = qobject_cast<QWidget*>(watched);

        if(pWidget)

        {

            m_pTitleLabel->setText(pWidget->windowTitle());

            return true;

        }

    }

    case QEvent::WindowIconChange:

    {

        QWidget* pWidget = qobject_cast<QWidget*>(watched);

        if(pWidget)

        {

            QIcon icon = pWidget->windowIcon();

            m_pIconLabel->setPixmap(icon.pixmap(m_pIconLabel->size()));

            return true;

        }

    }

    case QEvent::WindowStateChange:

    case QEvent::Resize:

    {

        updateMaximize();

        return true;

    }

    }

    return QWidget::eventFilter(watched,event);

}

void TitleBar::onClicked()

{

    QPushButton* pButton = qobject_cast<QPushButton*>(sender());

    QWidget* pWidget = this->window();

    if(pWidget->isTopLevel())

    {

        if(pButton == m_pMiniMizeButton)

        {

            pWidget->showMinimized();

        }

        else if(pButton == m_pMaximizeButton)

        {

            pWidget->isMaximized()?pWidget->showNormal():pWidget->showMaximized();

        }

        else if(pButton == m_pCloseButton)

        {

            pWidget->close();

        }

    }

}

void TitleBar::updateMaximize()

{

    QWidget* pWidget = this->window();

    if(pWidget->isTopLevel())

    {

        bool bMaximize = pWidget->isMaximized();

        if(bMaximize)

        {

            m_pMaximizeButton->setToolTip("Restore");

            m_pMaximizeButton->setProperty("maximizePorperty","restore");

        }

        else

        {

            m_pMaximizeButton->setToolTip("Maximize");

            m_pMaximizeButton->setProperty("maximizePorperty","maximize");

        }

        m_pMaximizeButton->setStyle(QApplication::style());

    }

}

使用

#include "widget.h"

#include "ui_widget.h"

#include "titlebar.h"

#include <QPalette>

#include <QVBoxLayout>

Widget::Widget(QWidget *parent) :

    QWidget(parent),

    ui(new Ui::Widget)

{

    ui->setupUi(this);

    this->setWindowFlags(Qt::FramelessWindowHint | windowFlags());                  //remove the title bar

    TitleBar* pTitleBar = new TitleBar(this);

    this->installEventFilter(pTitleBar);

    this->resize(400,300);

    this->setWindowTitle("Thunder");

//    this->setWindowIcon(QIcon());

    QPalette pal(palette());

    pal.setColor(QPalette::Background,QColor(50,50,50));

    setAutoFillBackground(true);

    setPalette(pal);

    QVBoxLayout *pLayout = new QVBoxLayout();

    pLayout->addWidget(pTitleBar);

    pLayout->addStretch();

    pLayout->setSpacing(0);

    pLayout->setContentsMargins(0,0,0,0);

    this->setLayout(pLayout);

}

Widget::~Widget()

{

    delete ui;

}

这里的效果还是有问题的，还在排错中