Qt 状态机、自定义QPushButton、好看的Qt按钮

//cccpushbutton.h
#ifndef CCCPUSHBUTTON_H
#define CCCPUSHBUTTON_H
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#define ANIMATION_TIME 300
class CccPushButton : public QPushButton
{
    Q_OBJECT
    Q_PROPERTY(qreal o1 READ getO1 WRITE setO1)
    Q_PROPERTY(qreal o2 READ getO2 WRITE setO2)
    Q_PROPERTY(qreal o3 READ getO3 WRITE setO3)
public:    
    explicit CccPushButton(QWidget *parent=0);    
    explicit CccPushButton(const QString &resName, const QSize &size, QWidget *parent = 0 );
    qreal getO1() { return o1;}    
    qreal getO2() { return o2;}    
    qreal getO3() { return o3;}
    void setO1(qreal v){o1 = v;}
    void setO2(qreal v){o2 = v;}
    void setO3(qreal v){o3 = v;}
    void setResName(const QString &resName, const QSize &size,const QString& strTooltip="");
    void setResName(const QString &resName, int statusCount = 4);
    void setResName(const QString& resName, const QString& toolTip, int statusCount = 4);
    void updateResName(const QString& resName, const QString& toolTip);
    void CreateStateMachine();
    QSize GetSize(){return size;}
    ~CccPushButton();
public:
protected:
    void paintEvent(QPaintEvent *);
private:
    qreal o1,o2,o3;
    QString resName;
    QSize size;
signals:
public slots:
    void onAnimationChanged(const QVariant &);
};
#endif // CCCPUSHBUTTON_H

cccpushbutton.cpp

#include "cccpushbutton.h"

CccPushButton::CccPushButton(QWidget *parent):

QPushButton(parent)

{

     setFlat(true);

    setStyleSheet("background-color: rgb(255, 255, 255, 0);");

   CreateStateMachine();

setCursor(Qt::PointingHandCursor);

}

CccPushButton::CccPushButton(const QString &resName, const QSize &size, QWidget *parent) :

    QPushButton(parent)

{

    setFixedSize(size);

    this->size = size;

    this->resName = resName;

    setFlat(true);

    setStyleSheet("background-color: rgb(255, 255, 255, 0);");

    CreateStateMachine();

    setCursor(Qt::PointingHandCursor);

}

void CccPushButton::setResName(const QString &resName, const QSize &size,const QString& strTooltip)

{

    setFixedSize(size);

    this->size = size;

    this->resName = resName;

    if(!strTooltip.isEmpty())

        this->setToolTip(strTooltip);

    update();

}

void CccPushButton::setResName(const QString &resName, int statusCount)

{

    QPixmap pixmap(resName);

    QSize size(pixmap.size().width()/statusCount,pixmap.size().height());

    setFixedSize(size);

    this->size = size;

    this->resName = resName;

    update();

}

void CccPushButton::setResName(const QString& resName, const QString& toolTip, int statusCount)

{

    QPixmap pixmap(resName);

    QSize size(pixmap.size().width()/statusCount,pixmap.size().height());

    setFixedSize(size);

    this->size = size;

    this->resName = resName;

    this->setToolTip(toolTip);

    update();

}

void CccPushButton::updateResName(const QString& resName, const QString& toolTip)

{

    if (this->resName.isEmpty())

        return;

    this->resName = resName;

    this->setToolTip(toolTip);

    update();

}

void CccPushButton::CreateStateMachine()

{

    setO1(1.0);

    setProperty("o2", 0.0);

    setProperty("o3", 0.0);

    QStateMachine *machine = new QStateMachine(this);

    QState *state1 = new QState(machine);

    state1->assignProperty(this,"o1",1.0);

    state1->assignProperty(this,"o2",0.0);

    state1->assignProperty(this,"o3",0.0);

    QState *state2 = new QState(machine);

    state2->assignProperty(this,"o1",0.0);

    state2->assignProperty(this,"o2",1.0);

    state2->assignProperty(this,"o3",0.0);

    QState *state3 = new QState(machine);

    state3->assignProperty(this,"o1",0.0);

    state3->assignProperty(this,"o2",0.0);

    state3->assignProperty(this,"o3",1.0);

    QEventTransition *t1_2 = new QEventTransition(this, QEvent::Enter);

    t1_2->setTargetState(state2);   
    QEventTransition *t2_1 = new QEventTransition(this, QEvent::Leave);   
    t2_1->setTargetState(state1);   
    QEventTransition *t2_3 = new QEventTransition(this, QEvent::MouseButtonPress);   
    t2_3->setTargetState(state3);    
   QEventTransition *t3_2 = new QEventTransition(this, QEvent::MouseButtonRelease);  
  t3_2->setTargetState(state2);

    state1->addTransition(t1_2);

    state2->addTransition(t2_1);

    state2->addTransition(t2_3);

    state3->addTransition(t3_2);

    machine->setInitialState(state1);

    machine->start();

}

CccPushButton::~CccPushButton()
{
}
void CccPushButton::paintEvent(QPaintEvent *e)
{

    QPainter p(this);

    p.setRenderHint(QPainter::Antialiasing);

    p.setOpacity(getO1());

    p.drawPixmap(0, 0, this->width(), this->height(), QPixmap(resName), 0, 0, size.width(), size.height());

    p.setOpacity(getO2());

    p.drawPixmap(0, 0, this->width(), this->height(), QPixmap(resName), size.width(), 0, size.width(), size.height());

    p.setOpacity(getO3());

    p.drawPixmap(0, 0, this->width(), this->height(), QPixmap(resName), (size.width())*2, 0, size.width(), size.height());

    QPushButton::paintEvent(e);

}

void CccPushButton::onAnimationChanged(const QVariant &)

{

    update();

}