QT中QListView中放置自定义控件并添加滚动条

转载 http://zhouzhenren163.blog.163.com/blog/static/6549928120140605729334/ 

效果如下图所示：

代码如下：

untitled.pro:

#-------------------------------------------------
#
# Project created by QtCreator 2015-12-03T15:32:15
#
#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = untitled
TEMPLATE = app


SOURCES += main.cpp\
        #mainwindow.cpp \
    test.cpp \
    mylistwidget.cpp \
    mylistview.cpp \
    mywinbox.cpp

HEADERS  +=Enum.h \
    test.h \
    mylistwidget.h \
    mylistview.h \
    mywinbox.h\
#mainwindow.h \

FORMS    += mainwindow.ui

Enum.h:

#ifndef ENUM_H
#define ENUM_H
enum MyEnum
{
    GRAP = 2,               //控件四周间隙，可更改;
    WIDTH = 180+2*GRAP,     //+2*GRAP不能更改，只能改前面的数字,如将400改为300或500，下同;
    HEIGHT = 70+2*GRAP,
    COUNT = 10
};
#endif // ENUM_H

mylistview.h:

#ifndef MYLISTVIEW_H
#define MYLISTVIEW_H

#include <QListView>
#include <QList>

#include "MyWinBox.h"


class MyListView : public QListView
{
    Q_OBJECT

public:
    MyListView(QWidget *parent);
    ~MyListView();

public slots:
    void ReSizeSlot(int row,int column);

public:
    QList<MyWinBox*>  GetWinBoxList();

private:
    QList<MyWinBox*>  m_WinBoxList;

};

#endif // MYLISTVIEW_H

mylistwidget.h:

#ifndef MYLISTWIDGET_H
#define MYLISTWIDGET_H

#include <QWidget>
#include <QListView>
#include "MyListView.h"

class MyListWidget : public QWidget
{
    Q_OBJECT
public:
    MyListWidget(QWidget *parent);
    ~MyListWidget();
public:
    MyListView*  GetList();
private:
    MyListView*  m_ListView;
};

#endif // MYLISTWIDGET_H

mywinbox.h:

#ifndef MYWINBOX_H
#define MYWINBOX_H

#include <QWidget>
#include <QLineEdit>

class MyWinBox : public QWidget
{
    Q_OBJECT

public:
    MyWinBox(QWidget *parent);
    ~MyWinBox();

public:
    QLineEdit*	m_NameEdit;
};

#endif // MYWINBOX_H

test.h

#ifndef TEST_H
#define TEST_H

#include <QWidget>
#include "mylistwidget.h"
#include <QScrollBar>

class Test : public QWidget
{
    Q_OBJECT

public:
    Test(QWidget *parent = 0);
    ~Test();
    //overwrite:
protected:
    void  resizeEvent(QResizeEvent * event);

signals:
    void SendReSizeSignal(int,int);
private slots:
    void DisplayListView(int);

private:
    MyListWidget*   m_ListWidget;
    QScrollBar*     m_VScrollBar ;

};
#endif // TEST_H

main.cpp:

//#include "mainwindow.h"
#include <QtWidgets/QApplication>
#include "test.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
//    MainWindow w;
//    w.show();
    Test w;
    w.show();

    return a.exec();
}

mylistview.cpp

#include "mylistview.h"
#include "Enum.h"

MyListView::MyListView(QWidget *parent)	: QListView(parent)
{
    for(int i=0;i<COUNT;i++)
    {
        MyWinBox* box = new MyWinBox(this);
        box->m_NameEdit->setText(QString("%0").arg(i+1));
        box->move(0,i*(HEIGHT)+(i+1)*GRAP);
        m_WinBoxList.append(box);
    }
}

MyListView::~MyListView()
{

}
void MyListView::ReSizeSlot(int row,int column)
{
    int x=0,y=0;
    int n = 0;
    for(int i=0;i<row;i++)
    {
        y = i * (HEIGHT+GRAP) + 2*GRAP;
        for(int j=0;j<column;j++)
        {
            x = j * (WIDTH+GRAP) + 2*GRAP;
            if(n>=COUNT)
                break;
            m_WinBoxList[n++]->move(x,y);
        }
    }

}

QList<MyWinBox*>  MyListView::GetWinBoxList()
{
    return m_WinBoxList;
}

mylistwidget.cpp

#include "MyListWidget.h"
#include <QLayout>


MyListWidget::MyListWidget(QWidget *parent)	: QWidget(parent)
{
    m_ListView = new MyListView(this);

    QGridLayout* layout = new QGridLayout(this);
    layout->addWidget(m_ListView);
    layout->setMargin(0);
    layout->setSpacing(0);
    setLayout(layout);
}

MyListWidget::~MyListWidget()
{

}

MyListView* MyListWidget::GetList()
{
    return m_ListView;
}

mywinbox.cpp

#include "MyWinBox.h"
#include <QLabel>
#include <QCheckBox>
#include <QLayout>
#include <QGroupBox>
#include "Enum.h"


MyWinBox::MyWinBox(QWidget *parent) : QWidget(parent)
{
    QLabel*  name = new QLabel("name:",this);
    m_NameEdit = new QLineEdit(this);
    m_NameEdit->setFixedWidth(100);
    QLabel* sex = new QLabel("sex:",this);
    QCheckBox* check = new QCheckBox(this);

    QGroupBox* groupBox = new QGroupBox(this);

    QGridLayout* layout = new QGridLayout(this);
    layout->addWidget(name,0,0);
    layout->addWidget(m_NameEdit,0,1);
    layout->addWidget(sex,1,0);
    layout->addWidget(check,1,1);
    groupBox->setLayout(layout);
    groupBox->setAlignment(Qt::AlignCenter);

    this->setFixedSize(WIDTH,2*(HEIGHT+GRAP));

    QString groupBoxStyle = "QGroupBox{background: qradialgradient(cx:0, cy:0, radius: 1,fx:0.5, fy:0.5, stop:0 white, stop:1 rgba(0,0,0, 50%));border-radius: 3px}";
    groupBox->setStyleSheet(groupBoxStyle);
}

MyWinBox::~MyWinBox()
{

}

test.cpp

#include "test.h"
#include <QLayout>
#include "Enum.h"

/*
Test::Test(QWidget *parent)	 : QWidget(parent)
{
    m_ListWidget = new MyListWidget(this);
    m_VScrollBar = new QScrollBar(Qt::Vertical,this);

    QHBoxLayout* layout = new QHBoxLayout(this);
    layout->addWidget(m_ListWidget);
    layout->addWidget(m_VScrollBar);
    layout->setMargin(0);
    layout->setSpacing(0);
    setLayout(layout);

    connect(m_VScrollBar,SIGNAL(valueChanged(int)),this,SLOT(DisplayListView(int)));
    connect(this,SIGNAL(SendReSizeSignal(int,int)),m_ListWidget->GetList(),SLOT(ReSizeSlot(int,int)));
}

Test::~Test()
{

}
void Test::resizeEvent(QResizeEvent * event)
{

    int width = this->size().width()-m_VScrollBar->width();
    int column = width/WIDTH;
    column = width/WIDTH==0 ? 1 : column;
    int row = COUNT/column;
    row = COUNT%column==0 ? row : (row+1) ;

    if(height()>=row*HEIGHT)
    {
        m_VScrollBar->setMinimum(0);
        m_VScrollBar->setMaximum(0);
        m_VScrollBar->setHidden(true);
    }
    else
    {
        m_VScrollBar->setHidden(false);
        int itemHeight = HEIGHT+GRAP;
        m_VScrollBar->setMinimum(0);
        int max = row*itemHeight-height();
        int pageStep = height()-max;
        m_VScrollBar->setMaximum(max);
        m_VScrollBar->setPageStep(pageStep);
        m_VScrollBar->setSingleStep(10);
    }

    int listViewHeight = row*(HEIGHT+GRAP);
    listViewHeight = listViewHeight > this->size().height() ? listViewHeight : this->size().height();
    m_ListWidget->GetList()->resize(this->size().width(),listViewHeight);

    emit SendReSizeSignal(row,column);

    QWidget::resizeEvent(event);
}
void Test::DisplayListView(int len)
{
    m_ListWidget->GetList()->move(0,-len);
}
*/

Test::Test(QWidget *parent)  : QWidget(parent)
{
    m_ListWidget = new MyListWidget(this);
    m_VScrollBar = new QScrollBar(Qt::Vertical,this);

    QHBoxLayout* layout = new QHBoxLayout(this);
    layout->addWidget(m_ListWidget);
    layout->addWidget(m_VScrollBar);
    layout->setMargin(0);
    layout->setSpacing(0);
    setLayout(layout);

    connect(m_VScrollBar,SIGNAL(valueChanged(int)),this,SLOT(DisplayListView(int)));
    connect(this,SIGNAL(SendReSizeSignal(int,int)),m_ListWidget->GetList(),SLOT(ReSizeSlot(int,int)));
}

Test::~Test()
{

}
void Test::resizeEvent(QResizeEvent * event)
{

    int width = this->size().width()-m_VScrollBar->width();
    int column = width/WIDTH;
    column = width/WIDTH==0 ? 1 : column;
    int row = COUNT/column;
    row = COUNT%column==0 ? row : (row+1) ;

    if(height()>=row*HEIGHT)
    {
        m_VScrollBar->setMinimum(0);
        m_VScrollBar->setMaximum(0);
        m_VScrollBar->setHidden(true);
    }
    else
    {
        m_VScrollBar->setHidden(false);
        int itemHeight = HEIGHT+GRAP;
        m_VScrollBar->setMinimum(0);
        int max = row*itemHeight-height();
        int pageStep = height()-max;
        m_VScrollBar->setMaximum(max);
        m_VScrollBar->setPageStep(pageStep);
        m_VScrollBar->setSingleStep(10);
    }

    int listViewHeight = row*(HEIGHT+GRAP);
    listViewHeight = listViewHeight > this->size().height() ? listViewHeight : this->size().height();
    m_ListWidget->GetList()->resize(this->size().width(),listViewHeight);

    emit SendReSizeSignal(row,column);

    QWidget::resizeEvent(event);
}
void Test::DisplayListView(int len)
{
    m_ListWidget->GetList()->move(0,-len);
}

在编译的时候，一直出现链接 问题，把工程清理了，重新编译都不行，后来 把项目的生成的那一套 build-untitled-Desktop_Qt_5_3_MSVC2010_OpenGL_32bit_qt_53_w-Debug 整个文件夹给删除了，就可以了。看来QT中只要代码正确，保证头文件中的声明和实现中有定义，代码正确，就可以把生成的编译的东西删除，再编译，就可以了。原先一直在编译，然后一直不成功，刚开始一直怀疑是代码的问题，弄了好半天，最后原来是这个问题~~~~~~~~~~~~~~