用Layout实现QToolBox效果

来源：互联网发布：excel问卷数据录入编辑：程序博客网时间：2024/06/04 17:40

1、简介

最近要做一个项目，需要用到抽屉，但是抽屉有不能同时展开多个，所以自己用Layout实现下，记录在此，备忘。

主要思路是自定义一个类继承自QWidget，此类包含一个QVBoxLayout作为mainlayout，然后在mainlayout中顶部用一个按钮控件来作为抽屉的标题栏，用一个list保存addItem插入的控件，当点击顶部按钮时，把list保存的控件可视化状态改变，下面贴具体代码。

2、代码

MyToolBox.h：

#pragma once#include <QWidget>#include <QVBoxLayout>#include <QList>#include <QPushButton>class MyToolBox :public QWidget{Q_OBJECTpublic:MyToolBox(QIcon & icon, const QString &title, QWidget *parent = 0);~MyToolBox(void);void addItem(QWidget *item);private slots:void titleClicked();private:QVBoxLayout *m_mainLayout;QList<QWidget *> m_itemList;QPushButton *m_TitleBtn;bool m_isVisable;};

MyToolBox.cpp：

#include "MyToolBox.h"MyToolBox::MyToolBox(QIcon & icon, const QString &title, QWidget *parent): QWidget(parent){//初始化为非展开m_isVisable = false;m_mainLayout = new QVBoxLayout;m_TitleBtn = new QPushButton(icon, title);m_mainLayout->addWidget(m_TitleBtn);m_mainLayout->addSpacing(2);connect(m_TitleBtn, SIGNAL(clicked()), this, SLOT(titleClicked()));m_mainLayout->setContentsMargins(0,0,0,0);m_mainLayout->setSpacing(0);setLayout(m_mainLayout);setStyleSheet("QWidget{border: 0;}");}MyToolBox::~MyToolBox(void){}void MyToolBox::titleClicked(){for (int i=0; i<m_itemList.size(); ++i){m_itemList[i]->setVisible(!m_itemList[i]->isVisible());}if (m_itemList.size() > 0)m_isVisable = m_itemList[0]->isVisible();}void MyToolBox::addItem(QWidget *item){m_itemList.append(item);m_mainLayout->addWidget(item);if (0 == m_itemList.size())item->setVisible(false);else{item->setVisible(m_isVisable);//m_itemList[0]->isVisible());}}

customtoolbox.h：

#ifndef CUSTOMTOOLBOX_H#define CUSTOMTOOLBOX_H#include <QtGui/QWidget>#include <QVBoxLayout>#include "MyToolBox.h"class CustomToolBox : public QWidget{Q_OBJECTpublic:CustomToolBox(QWidget *parent = 0, Qt::WFlags flags = 0);~CustomToolBox();private:MyToolBox * m_toolBox1;MyToolBox * m_toolBox2;MyToolBox * m_toolBox3;QVBoxLayout *m_mainLayout;};#endif // CUSTOMTOOLBOX_H

customtoolbox.cpp：

#include "customtoolbox.h"CustomToolBox::CustomToolBox(QWidget *parent, Qt::WFlags flags): QWidget(parent, flags){m_mainLayout = new QVBoxLayout;setLayout(m_mainLayout);m_mainLayout->setContentsMargins(0,0,0,0);m_mainLayout->setSpacing(0);QString str = QString("delIcon.png");QIcon icon(str);m_toolBox1 = new MyToolBox(icon, "BTN1");QPushButton *tmpBtn1 = new QPushButton("111");QPushButton *tmpBtn2 = new QPushButton("222");QPushButton *tmpBtn3 = new QPushButton("333");m_toolBox1->addItem(tmpBtn1);m_toolBox1->addItem(tmpBtn2);m_toolBox1->addItem(tmpBtn3);m_toolBox2 = new MyToolBox(icon, "BTN2");QPushButton *tmpBtn11 = new QPushButton("111__");QPushButton *tmpBtn22 = new QPushButton("222__");m_toolBox2->addItem(tmpBtn11);m_toolBox2->addItem(tmpBtn22);m_toolBox3 = new MyToolBox(icon, "BTN3");QPushButton *tmpBtn111 = new QPushButton("__111__");QPushButton *tmpBtn222 = new QPushButton("__222__");m_toolBox3->addItem(tmpBtn111);m_toolBox3->addItem(tmpBtn222);m_mainLayout->addWidget(m_toolBox1);m_mainLayout->addWidget(m_toolBox2);m_mainLayout->addWidget(m_toolBox3);m_mainLayout->addStretch();setGeometry(300, 300, 100, 400);}CustomToolBox::~CustomToolBox(){}

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