Qt软件开发文档6---dockWidget自定义标题栏

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Qt 自带的 QDockWidget 的标题栏只有两个按钮，浮动按钮和关闭按钮。
往往满足不了需求，只适合需要我们自定义一个标题栏。
如下标题栏实现了自定义的最小化，最大化，关闭按钮，接收到dock传来的标题信息
这里写图片描述

直接上代码:
1.声明一个MyDockTitleBar类
MyDockTitleBar.h

#ifndef MYDOCKTITLEBAR_H#define MYDOCKTITLEBAR_H#include <QSize>#include <QDockWidget>#include <QMouseEvent>#include <QWidget>#include <QPainter>#include <QPaintEvent>#include <QStyle>class MyDockTitleBar : public QWidget{    Q_OBJECTpublic:    MyDockTitleBar(QString dockName,QWidget *parent = 0);    QSize sizeHint() const { return minimumSizeHint(); }    QSize minimumSizeHint() const;    int width;    QString name;//receive parent,s nameprotected:    void paintEvent(QPaintEvent *event);//paint titleBar    void mousePressEvent(QMouseEvent *event); //mouse pressprivate:    QPixmap minPix, closePix, floatPix;};#endif // MYDOCKTITLEBAR_H

MyDockTitleBar.cpp

#include "myDockTitleBar.h"MyDockTitleBar::MyDockTitleBar(QString dockName,QWidget *parent): QWidget(parent){    //pixMap    minPix = style()->standardPixmap(QStyle::SP_TitleBarMinButton);    closePix  = style()->standardPixmap(QStyle::SP_TitleBarCloseButton);    floatPix = style()->standardPixmap(QStyle::SP_TitleBarNormalButton);    name = dockName;}//set TitleBar minimumSizeQSize MyDockTitleBar::minimumSizeHint() const{    return QSize(156, 24);}//绘制titleBarvoid MyDockTitleBar::paintEvent(QPaintEvent*){    QPainter painter(this);    QRect rect = this->rect();    width = rect.width();    //drawPixmap    painter.setPen(QPen(QColor(185, 185, 185), 2, Qt::SolidLine));    painter.setBrush(QBrush(QColor(218, 218, 218), Qt::SolidPattern));    painter.drawRect(rect.left(), rect.top(), rect.width(), rect.height());    painter.drawPixmap(rect.topRight() - QPoint(closePix.width() + 10, -6), closePix);    painter.drawPixmap(rect.topRight() - QPoint(floatPix.width() + 10 + closePix.width() + 10, -6), floatPix);    painter.drawPixmap(rect.topRight() - QPoint(floatPix.width() + 10 + minPix.width() + 10                                                + closePix.width() + 10, -3), minPix);    //drawText    painter.setPen(QPen(Qt::black, 1, Qt::SolidLine));    painter.setBrush(Qt::NoBrush);    painter.drawText(rect.left() + 10, rect.top()-2, rect.width(), rect.height(), Qt::AlignVCenter, name);    //draw   Blank area    painter.setPen(Qt::NoPen);    painter.setBrush(QBrush(QColor(240, 240, 240), Qt::SolidPattern));//设置画刷形式    painter.drawRect(rect.left(), rect.top() + 19, rect.width(), 5);}void MyDockTitleBar::mousePressEvent(QMouseEvent *event){    QPoint pos = event->pos();    QRect rect = this->rect();    QDockWidget *dw = qobject_cast<QDockWidget*>(parentWidget());    Q_ASSERT(dw != 0);    //in this case,pix width = 10,pix spacing = 10    int right = rect.right() - pos.x();    QWidget *widget = dw->widget();    if (right >= 10 && right <= 20)    {        event->accept();        dw->close();    }    else if (right >= 30 && right <= 40){        event->accept();        if (widget->isVisible()){        }        else {            widget->show();            //dw setMinimumWidth initialize            dw->setMinimumWidth(156);        }    }    else if (right >= 50 && right <= 60){        event->accept();        if (widget->isVisible()){            //click minPix ,dw setMinimumWidth            dw->setMinimumWidth(width);            widget->hide();        }        else {        }    }}

在窗口中调用

    dock[0] = new QDockWidget(tr("TreeView"),this);    dock[0]->setFeatures(QDockWidget::AllDockWidgetFeatures);//所有属性    dock[0]->setAllowedAreas(Qt::LeftDockWidgetArea);//设置允许停靠的窗口位置    dllName = "treeDll.dll";    funcName = "showTree";    MyDockTitleBar *titleBar0 = new MyDockTitleBar(tr("TreeView"), dock[0]);    dock[0]->setTitleBarWidget(titleBar0);    QWidget *tree = new QWidget(dock[0]);    tree = setWidget(dllName,funcName);    tree->setMinimumHeight(130);    dock[0]->setWidget(tree);    addDockWidget(Qt::LeftDockWidgetArea,dock[0]);

本文借鉴：https://www.oschina.net/code/snippet_1029551_20242

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