Qt-Qt实现动画按钮(多图动画)

相关资料：

https://blog.csdn.net/qq_41399894/article/details/93483507?utm_medium=distribute.pc_relevant.none-task-blog-baidujs_title-2&spm=1001.2101.3001.4242

 https://download.csdn.net/download/zhujianqiangqq/18466204    代码包下载

.pro

#-------------------------------------------------
#
# Project created by QtCreator 2019-06-24T11:25:07
#
#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = untitled
TEMPLATE = app

# The following define makes your compiler emit warnings if you use
# any feature of Qt which as been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0


SOURCES += main.cpp\
        mainwindow.cpp \
    mybtn.cpp

HEADERS  += mainwindow.h \
    mybtn.h

FORMS    += mainwindow.ui

RESOURCES += \
    image.qrc

main.h

#include "mainwindow.h"
#include <QApplication>

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

    return a.exec();
}

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();

private:
    Ui::MainWindow *ui;

};

#endif // MAINWINDOW_H

mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "mybtn.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    mainButton* m_btn=new mainButton(":/clean_Hover.png",":/clean_Leave.png",this);
    m_btn->setGeometry(30,30,95,95);
}

MainWindow::~MainWindow()
{
    delete ui;
}

mainwindow.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>400</width>
    <height>300</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralWidget"/>
  <widget class="QMenuBar" name="menuBar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>400</width>
     <height>23</height>
    </rect>
   </property>
  </widget>
  <widget class="QToolBar" name="mainToolBar">
   <attribute name="toolBarArea">
    <enum>TopToolBarArea</enum>
   </attribute>
   <attribute name="toolBarBreak">
    <bool>false</bool>
   </attribute>
  </widget>
  <widget class="QStatusBar" name="statusBar"/>
 </widget>
 <layoutdefault spacing="6" margin="11"/>
 <resources/>
 <connections/>
</ui>

mybtn.h

#ifndef MYBTN_H
#define MYBTN_H

#include <QObject>
#include <QWidget>
#include<QPaintEvent>
#include<QEvent>
#include<QPushButton>
#include<qpropertyanimation.h>
#include<QDebug>
class mainButton : public QPushButton//用于主的图片
{
    Q_OBJECT
public:
    mainButton(QString pixenter, QString pixleave, QWidget*parent);
    ~mainButton();
protected:
    //鼠标进入事件
    void enterEvent(QEvent*);
    //鼠标离开事件
    void leaveEvent(QEvent*);
    //绘制动态图片
    void paintEvent(QPaintEvent*);
    //两个动画类：一个进入一个离开
    QPropertyAnimation*m_enteranimation;
    QPropertyAnimation*m_leaveanimation;
    //存储进入、离开事件需要绘画的图片
    QList<QPixmap> m_enterlist;
    QList<QPixmap> m_leavelist;
    //进入事件绘制的图片下标
    int m_enterIndex;
    //离开事件绘制的图片下标
    int m_leaveIndex;
    //标志位
    bool m_enter;
    bool m_leave;
public slots:
    void entervaluechange(QVariant var){m_enterIndex=var.toInt();update();}
    void leavevaluechange(QVariant var){m_leaveIndex=var.toInt();update();}
};

#endif // MYBTN_H

mybtn.cpp

#include "mybtn.h"
#include<QPainter>
#include<QDebug>
#include<QLabel>
#include<QHBoxLayout>
#include<QFontMetrics>
mainButton::mainButton(QString strpixenter,QString strpixleave,QWidget*parent):QPushButton(parent)
{
    QPixmap pixenter(strpixenter);
    QPixmap pixleave(strpixleave);

    m_leave=false;
    m_enter=true;
    m_leaveIndex=0;
    m_enterIndex=0;
    for(int i=0;i<10;i++)//进入
    {
        m_enterlist<<pixenter.copy(i*(pixenter.width()/10),0,pixenter.width()/10,pixenter.height());
    }
    for(int j=0;j<8;j++)//离开
    {
        m_leavelist<<pixleave.copy(j*(pixleave.width()/8),0,pixleave.width()/8,pixleave.height());
    }
    //QPropertyAnimation的效果就是把绑定的变量从设定的初始值变为结束值
    m_enteranimation=new QPropertyAnimation(this,"");
    m_enteranimation->setStartValue(0);
    m_enteranimation->setEndValue(9);
    //动画的持续时间
    m_enteranimation->setDuration(600);
    connect(m_enteranimation,SIGNAL(valueChanged(QVariant)),this,SLOT(entervaluechange(QVariant)));

    m_leaveanimation=new QPropertyAnimation(this,"");
    m_leaveanimation->setStartValue(0);
    m_leaveanimation->setEndValue(7);
    m_leaveanimation->setDuration(600);
    connect(m_leaveanimation,SIGNAL(valueChanged(QVariant)),this,SLOT(leavevaluechange(QVariant)));
}
mainButton::~mainButton()
{
    delete m_leaveanimation;
    delete m_enteranimation;
}
void mainButton::enterEvent(QEvent *)
{
    m_enter=true;
    m_leave=false;
    m_enteranimation->start();
}
void mainButton::leaveEvent(QEvent *)
{
    m_enter=false;
    m_leave=true;
    m_leaveanimation->start();
}
void mainButton::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    if(m_enter)
    painter.drawPixmap(rect(),m_enterlist.at(m_enterIndex));
    if(m_leave)
    painter.drawPixmap(rect(),m_leavelist.at(m_leaveIndex));
}

resource.qrc(不提供)