QT-自定义控件（按键、标签、编辑框）

QT-自定义控件（按键、标签、编辑框）

一、前言

使用自定义控件，我们可以从外部资源直接加载UI，不用每次修改UI完之后要去编译软件。

二、以按键自定义控件为例子

1.CustomButton.h

#pragmaonce#pragmaonce#include<QtUiPlugin/QDesignerExportWidget>#include<QtWidgets/QWidget>#include<QtWidgets/QToolButton>

class QDESIGNER_WIDGET_EXPORT CustomButton : public QToolButton
{
    Q_OBJECT
        //Q_PROPERTY(QString strNodeName READ getNodeName WRITE setNodeName)Q_PROPERTY(int registerType READ getRegisterType WRITE setRegisterType)Q_PROPERTY(bool setCheckable READ getEnableCheckStated WRITE setEnableCheckStated)Q_PROPERTY(QString checkedImageName READ getCheckedImageName  WRITE setCheckedImageName)Q_PROPERTY(QString unCheckedImageName READ getUnCheckedImageName  WRITE setUnCheckedImageName)Q_PROPERTY(QString writePressedAddr READ getWritePressedAddr  WRITE setWritePressedAddr)Q_PROPERTY(QString writePressedBit READ getWritePressedBit  WRITE setWritePressedBit)Q_PROPERTY(QString writePressedVal READ getWritePressedVal  WRITE setWritePressedVal)Q_PROPERTY(bool enableReleaseWrite READ getEnableReleaseWrite  WRITE setEnableReleaseWrite)Q_PROPERTY(QString writeReleasedAddr READ getWriteReleasedAddr  WRITE setWriteReleasedAddr)Q_PROPERTY(QString writeReleasedBit READ getWriteReleasedBit  WRITE setWriteReleasedBit)Q_PROPERTY(QString writeReleasedVal READ getWriteReleasedVal  WRITE setWriteReleasedVal)Q_PROPERTY(QString readStateAddr READ getReadAddr  WRITE setReadAddr)Q_PROPERTY(QString readStateBit READ getReadBit  WRITE setReadBit)
public:
    explicit CustomButton(QWidget *parent = Q_NULLPTR);
    virtual ~CustomButton(){}

private:
    QString strNodeName;int nRegisterType;
    bool bEnableCheckStated;
    bool bEnableReleaseWrite;
    QString strCheckedImageName;
    QString strUnCheckedImageName;
    QString strWritePressedAddr;
    QString strWritePressedBit;
    QString strWritePressedVal;
    QString strWriteReleasedAddr;
    QString strWriteReleasedBit;
    QString strWriteReleasedVal;
    QString strReadAddr;
    QString strReadBit;
    QString strReadVal;
    QString strFilePath;
    QString strImageName;

protected:voidpaintEvent(QPaintEvent *event);voidresizeEvent(QResizeEvent *event);
    bool eventFilter(QObject* object, QEvent* event);
    bool event(QEvent *event);

private slots:voidslotButtonPressed();voidslotButtonReleased();

public Q_SLOTS:
    QString getNodeName();intgetRegisterType();
    bool getEnableCheckStated();
    bool getEnableReleaseWrite();
    QString getCheckedImageName();
    QString getUnCheckedImageName();
    QString getWritePressedAddr();
    QString getWritePressedBit();
    QString getWritePressedVal();
    QString getWriteReleasedAddr();
    QString getWriteReleasedBit();
    QString getWriteReleasedVal();
    QString getReadAddr();
    QString getReadBit();

public Q_SLOTS:voidsetNodeName(QString strName);voidsetRegisterType(int nType);voidsetEnableCheckStated(bool bEnable);voidsetEnableReleaseWrite(bool bEnable);voidsetCheckedImageName(QString strPath);voidsetUnCheckedImageName(QString strPath);voidsetWritePressedAddr(QString strAddr);voidsetWritePressedBit(QString strBit);voidsetWritePressedVal(QString strVal);voidsetWriteReleasedAddr(QString strAddr);voidsetWriteReleasedBit(QString strBit);voidsetWriteReleasedVal(QString strVal);voidsetReadAddr(QString strAddr);voidsetReadBit(QString strBit);

Q_SIGNALS:voidsigPressedButton(QString strName, QString strWritePressedAddr,QString strWritePressedBit,QString strWritePressedVal,int nRegisterType);voidsigReleasedButton(QString strName, QString strWriteReleasedAddr,QString strWriteReleasedBit, QString strWriteReleasedVal,int nRegisterType);};

2.CustomButton.cpp

代码如下：

#include"CustomButton.h"#include<QAction>#include<QCoreApplication>#include<QDir>#include<QJsonObject>#include<QJsonDocument>#include<QMouseEvent>const QString tagObjectName("ObjectName");const QString tagButtonState("ButtonState");#defineRESET_VALQString("0")

CustomButton::CustomButton(QWidget *parent):QToolButton(parent),strNodeName("wireRod"),bEnableCheckStated(true),strCheckedImageName(""),strUnCheckedImageName(""),strWritePressedAddr("0"),strWritePressedBit("0"),strWritePressedVal("1"),strWriteReleasedAddr("0"),strWriteReleasedBit("0"),strWriteReleasedVal("0"),strReadAddr("0"),strReadBit("0"),nRegisterType(1),bEnableReleaseWrite(false){
    this->installEventFilter(parent);if(bEnableCheckStated)
        this->setCheckable(true);else
        this->setCheckable(false);

    this->setIcon(QIcon(":/Resources/pic_guabian_s.png"));
    this->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);int nMax =0;if(this->width()> this->height())
        nMax = this->width();else
        nMax = this->height();
    this->setIconSize(QSize(nMax, nMax));connect(this,SIGNAL(pressed()), this,SLOT(slotButtonPressed()));connect(this,SIGNAL(released()), this,SLOT(slotButtonReleased()));

    this->installEventFilter(this);

    QString strConfig = QCoreApplication::applicationDirPath()+"/Config";
    QDir dir(strConfig);if(!dir.exists())
        dir.mkdir(strConfig);

    strFilePath = QCoreApplication::applicationDirPath()+"/Config/CustomControls";
    QDir dir1(strFilePath);if(!dir1.exists())
        dir1.mkdir(strFilePath);

    strImageName = QCoreApplication::applicationDirPath()+"/Config/Image";
    QDir dir2(strImageName);if(!dir2.exists())
        dir2.mkdir(strImageName);}void CustomButton::paintEvent(QPaintEvent *event){
    QToolButton::paintEvent(event);// 设置图标图片if(this->isChecked()){
        QString strPath = strImageName +"/"+ strCheckedImageName;
        this->setIcon(QIcon(strPath));}elseif(!this->isChecked()){
        QString strPath = strImageName +"/"+ strUnCheckedImageName;
        this->setIcon(QIcon(strPath));}// 设置是否按下选中if(bEnableCheckStated)
        this->setCheckable(true);else
        this->setCheckable(false);}void CustomButton::resizeEvent(QResizeEvent *event){
    QToolButton::resizeEvent(event);}

bool CustomButton::eventFilter(QObject* object, QEvent* event){return QToolButton::eventFilter(object, event);}

bool CustomButton::event(QEvent *event){if(event->type()== QEvent::MouseButtonPress){
        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);if(mouseEvent->button()== Qt::LeftButton){}}return QToolButton::event(event);}

QString CustomButton::getNodeName(){return strNodeName;}int CustomButton::getRegisterType(){return nRegisterType;}

bool CustomButton::getEnableCheckStated(){return bEnableCheckStated;}

bool CustomButton::getEnableReleaseWrite(){return bEnableReleaseWrite;}

QString CustomButton::getCheckedImageName(){return strCheckedImageName;}

QString CustomButton::getUnCheckedImageName(){return strUnCheckedImageName;}

QString CustomButton::getWritePressedAddr(){return strWritePressedAddr;}

QString CustomButton::getWritePressedBit(){return strWritePressedBit;}

QString CustomButton::getWritePressedVal(){return strWritePressedVal;}

QString CustomButton::getWriteReleasedAddr(){return strWriteReleasedAddr;}

QString CustomButton::getWriteReleasedBit(){return strWriteReleasedBit;}

QString CustomButton::getWriteReleasedVal(){return strWriteReleasedVal;}

QString CustomButton::getReadAddr(){return strReadAddr;}

QString CustomButton::getReadBit(){return strReadBit;}void CustomButton::setNodeName(QString strName){
    strNodeName = strName;}void CustomButton::setRegisterType(int nType){
    nRegisterType = nType;}void CustomButton::setEnableCheckStated(bool bEnable){if(bEnableCheckStated)
        this->setCheckable(true);else
        this->setCheckable(false);

    bEnableCheckStated = bEnable;}void CustomButton::setEnableReleaseWrite(bool bEnable){
    bEnableReleaseWrite = bEnable;}void CustomButton::setCheckedImageName(QString strPath){
    strCheckedImageName = strPath;}void CustomButton::setUnCheckedImageName(QString strPath){
    strUnCheckedImageName = strPath;}void CustomButton::setWritePressedAddr(QString strAddr){
    strWritePressedAddr = strAddr;}void CustomButton::setWritePressedBit(QString strBit){
    strWritePressedBit = strBit;}void CustomButton::setWritePressedVal(QString strVal){
    strWritePressedVal = strVal;}void CustomButton::setWriteReleasedAddr(QString strAddr){
    strWriteReleasedAddr = strAddr;}void CustomButton::setWriteReleasedBit(QString strBit){
    strWriteReleasedBit = strBit;}void CustomButton::setWriteReleasedVal(QString strVal){
    strWriteReleasedVal = strVal;}void CustomButton::setReadAddr(QString strAddr){
    strReadAddr = strAddr;}void CustomButton::setReadBit(QString strBit){
    strReadBit = strBit;}void CustomButton::slotButtonReleased(){if(bEnableCheckStated)return;if(bEnableReleaseWrite)
        emit sigReleasedButton(strNodeName, strWriteReleasedAddr, strWriteReleasedBit, strWriteReleasedVal,nRegisterType);}void CustomButton::slotButtonPressed(){if(bEnableCheckStated){// 选中和不选中，写入的值不同if(!this->isChecked())
            emit sigPressedButton(strNodeName, strWritePressedAddr, strWritePressedBit, strWritePressedVal,nRegisterType);else
            emit sigPressedButton(strNodeName, strWritePressedAddr, strWritePressedBit, RESET_VAL,nRegisterType);}else{// 只有按下的值
        emit sigPressedButton(strNodeName, strWritePressedAddr, strWritePressedBit, strWritePressedVal, nRegisterType);}}

3.CustomButtonPlugin.h

#pragmaonce#include<QtUiPlugin/QDesignerCustomWidgetInterface>

class CustomButtonPlugin : public QObject, public QDesignerCustomWidgetInterface
{
    Q_OBJECT
        Q_INTERFACES(QDesignerCustomWidgetInterface)

public:CustomButtonPlugin(QObject *parent = Q_NULLPTR);

    bool isContainer()const;
    bool isInitialized()const;
    QIcon icon()const;
    QString domXml()const;
    QString group()const;
    QString includeFile()const;
    QString name()const;
    QString toolTip()const;
    QString whatsThis()const;
    QWidget *createWidget(QWidget *parent);voidinitialize(QDesignerFormEditorInterface *core);

private:
    bool initialized;};

4.CustomButtonPlugin.cpp

代码如下：

#include"CustomButton.h"#include"CustomButtonPlugin.h"#include<QtCore/QtPlugin>

CustomButtonPlugin::CustomButtonPlugin(QObject *parent):QObject(parent){
    initialized = false;}void CustomButtonPlugin::initialize(QDesignerFormEditorInterface */*core*/){if(initialized)return;

    initialized = true;}

bool CustomButtonPlugin::isInitialized()const{return initialized;}

QWidget *CustomButtonPlugin::createWidget(QWidget *parent){return new CustomButton(parent);}

QString CustomButtonPlugin::name()const{return"CustomButton";}

QString CustomButtonPlugin::group()const{return"SWJ PLUGIN";}

QIcon CustomButtonPlugin::icon()const{returnQIcon(":/Resources/pic_guabian_s.png");}

QString CustomButtonPlugin::toolTip()const{returnQString();}

QString CustomButtonPlugin::whatsThis()const{returnQString();}

bool CustomButtonPlugin::isContainer()const{return false;}

QString CustomButtonPlugin::domXml()const{return"<widget class=\"CustomButton\" name=\"CustomButton\">\n"" <property name=\"geometry\">\n""  <rect>\n""   <x>0</x>\n""   <y>0</y>\n""   <width>100</width>\n""   <height>36</height>\n""  </rect>\n"" </property>\n""</widget>\n";}

QString CustomButtonPlugin::includeFile()const{return"CustomButton.h";}

三、下载链接

https://download.csdn.net/download/u013083044/87369369