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Qt-QPropertyAnimation的使用(支持放大、移动、透明动画)

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 相关资料:

https://download.csdn.net/download/zhujianqiangqq/85424062      csdn代码包下载

.pro

 1 QT       += core gui
 2 
 3 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 4 
 5 CONFIG += c++11
 6 
 7 # The following define makes your compiler emit warnings if you use
 8 # any Qt feature that has been marked deprecated (the exact warnings
 9 # depend on your compiler). Please consult the documentation of the
10 # deprecated API in order to know how to port your code away from it.
11 DEFINES += QT_DEPRECATED_WARNINGS
12 
13 # You can also make your code fail to compile if it uses deprecated APIs.
14 # In order to do so, uncomment the following line.
15 # You can also select to disable deprecated APIs only up to a certain version of Qt.
16 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
17 
18 SOURCES += \
19     main.cpp \
20     mainwindow.cpp
21 
22 HEADERS += \
23     mainwindow.h
24 
25 FORMS += \
26     mainwindow.ui
27 
28 # Default rules for deployment.
29 qnx: target.path = /tmp/$${TARGET}/bin
30 else: unix:!android: target.path = /opt/$${TARGET}/bin
31 !isEmpty(target.path): INSTALLS += target
32 
33 RESOURCES += \
34     resource.qrc
View Code

main.cpp

 1 #include "mainwindow.h"
 2 
 3 #include <QApplication>
 4 
 5 int main(int argc, char *argv[])
 6 {
 7     QApplication a(argc, argv);
 8     MainWindow w;
 9     w.show();
10     return a.exec();
11 }
View Code

mainwindow.h

 1 #ifndef MAINWINDOW_H
 2 #define MAINWINDOW_H
 3 
 4 #include <QMainWindow>
 5 #include <QPropertyAnimation>
 6 #include <QTimer>
 7 #include <QLabel>
 8 #include <QPushButton>
 9 
10 QT_BEGIN_NAMESPACE
11 namespace Ui { class MainWindow; }
12 QT_END_NAMESPACE
13 
14 class MainWindow : public QMainWindow
15 {
16     Q_OBJECT
17 
18 public:
19     MainWindow(QWidget *parent = nullptr);
20     ~MainWindow();
21 
22 private slots:
23     void on_Geometry();
24     void on_Pos();
25     void on_WindowOpacity();
26     void on_Timer();
27     void on_ButtonTimer();
28 private:
29     Ui::MainWindow *ui;
30     QPropertyAnimation *m_animation;// 动画对象指针
31     QTimer *m_pTimer;
32     QLabel *m_pLabel;
33     QPushButton *m_pGeometry;
34     QPushButton *m_pPos;
35     QPushButton *m_pWindowOpacity;
36     QPushButton *m_pButtonTimer;
37 };
38 #endif // MAINWINDOW_H
View Code

mainwindow.cpp

  1 #include "mainwindow.h"
  2 #include "ui_mainwindow.h"
  3 
  4 MainWindow::MainWindow(QWidget *parent)
  5     : QMainWindow(parent)
  6     , ui(new Ui::MainWindow)
  7 {
  8     ui->setupUi(this);
  9     setWindowTitle(QStringLiteral("Qt之QPropertyAnimation的使用(支持放大、移动、透明动画)"));
 10 
 11     m_pLabel = new QLabel(this);
 12     m_pLabel->setPixmap(QPixmap(":/new/prefix1/roommain.png"));
 13     m_pLabel->setGeometry(100, 100, 100, 100);
 14     m_pLabel->setScaledContents(true);
 15 
 16     m_animation = new QPropertyAnimation();
 17     m_animation->setEasingCurve(QEasingCurve::Linear); //设置动画效果
 18 
 19     m_pTimer = new QTimer(this);
 20     m_pTimer->setSingleShot(false);
 21     connect(m_pTimer, &QTimer::timeout, this, &MainWindow::on_Timer);
 22 
 23     m_pGeometry = new QPushButton(this);
 24     m_pGeometry->setText(QStringLiteral("改大小"));
 25     m_pGeometry->setGeometry(400, 10, 100, 25);
 26     connect(m_pGeometry, &QPushButton::clicked, this, &MainWindow::on_Geometry);
 27 
 28     m_pPos = new QPushButton(this);
 29     m_pPos->setText(QStringLiteral("移动"));
 30     m_pPos->setGeometry(400, 40, 100, 25);
 31     connect(m_pPos, &QPushButton::clicked, this, &MainWindow::on_Pos);
 32 
 33     m_pWindowOpacity = new QPushButton(this);
 34     m_pWindowOpacity->setText(QStringLiteral("透明"));
 35     m_pWindowOpacity->setGeometry(400, 70, 100, 25);
 36     connect(m_pWindowOpacity, &QPushButton::clicked, this, &MainWindow::on_WindowOpacity);
 37 
 38     m_pButtonTimer = new QPushButton(this);
 39     m_pButtonTimer->setText(QStringLiteral("显示坐标"));
 40     m_pButtonTimer->setGeometry(400, 100, 100, 25);
 41     connect(m_pButtonTimer, &QPushButton::clicked, this, &MainWindow::on_ButtonTimer);
 42 }
 43 
 44 MainWindow::~MainWindow()
 45 {
 46     delete ui;
 47 }
 48 
 49 void MainWindow::on_Geometry()
 50 {
 51     // geometry:按矩形的动画(移动和缩放)
 52     m_animation->setTargetObject(m_pLabel);    // 设置使用动画的控件
 53     m_animation->setPropertyName("geometry");   // 指定动画属性名
 54     m_animation->setDuration(100);    // 设置动画时间(单位:毫秒)
 55     // 获取控件初始的大小
 56     int width = m_pLabel->rect().width();
 57     int height = m_pLabel->rect().height();
 58     QPoint oPoint = m_pLabel->pos();
 59     // 设置动画起始位置
 60     m_animation->setStartValue(QRect(oPoint, QSize( width, height)));
 61     // 设置动画步长值,以及在该位置时的长宽
 62     m_animation->setKeyValueAt(0.5, QRect(m_pLabel->pos() - QPoint(50, 50), QSize( width + 100, height + 100)));
 63     // 设置动画结束位置及其大小
 64     m_animation->setEndValue(QRect(oPoint, QSize( width, height)));
 65     // 启动动画
 66     m_animation->start();
 67 }
 68 
 69 void MainWindow::on_Pos()
 70 {
 71     // pos:按点移动的动画(移动)
 72     m_animation->setTargetObject(m_pLabel);    // 设置使用动画的控件
 73     m_animation->setPropertyName("pos");    // 指定动画属性名
 74     m_animation->setDuration(3000);    // 设置动画时间(单位:毫秒)
 75     // 设置动画起始位置在label控件当前的pos
 76     m_animation->setStartValue(m_pLabel->pos());
 77     // 设置动画结束位置
 78     m_animation->setEndValue(m_pLabel->pos() + QPoint(200, 100));
 79     // 启动动画
 80     m_animation->start();
 81 }
 82 
 83 void MainWindow::on_WindowOpacity()
 84 {
 85     // windowOpacity:不透明度(注意该效果只对顶级窗口有效哦)
 86     m_animation->setTargetObject(this);     // 重设动画使用对象
 87     m_animation->setPropertyName("windowOpacity");  // 指定动画属性名
 88     m_animation->setDuration(2000);     // 设置动画时间(单位:毫秒)
 89 
 90     // 设置动画步长值,以及在该位置时显示的透明度
 91     m_animation->setKeyValueAt(0, 1);
 92     m_animation->setKeyValueAt(0.5, 0);
 93     m_animation->setKeyValueAt(1, 0);
 94     // 当值为-1时,动画一直运行,直到窗口关闭
 95     m_animation->setLoopCount(-1);
 96     // 启动动画
 97     m_animation->start();
 98 }
 99 
100 void MainWindow::on_Timer()
101 {
102     QString s = "x:%1  y:%2";
103     setWindowTitle(s.arg(m_pLabel->pos().x()).arg(m_pLabel->pos().y()));
104 }
105 
106 void MainWindow::on_ButtonTimer()
107 {
108     m_pTimer->start(100);
109 }
View Code

mainwindow.ui

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <ui version="4.0">
 3  <class>MainWindow</class>
 4  <widget class="QMainWindow" name="MainWindow">
 5   <property name="geometry">
 6    <rect>
 7     <x>0</x>
 8     <y>0</y>
 9     <width>550</width>
10     <height>400</height>
11    </rect>
12   </property>
13   <property name="windowTitle">
14    <string>MainWindow</string>
15   </property>
16   <widget class="QWidget" name="centralwidget"/>
17  </widget>
18  <resources/>
19  <connections/>
20 </ui>
View Code

 

 

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标签:动画,Qt,QPropertyAnimation,animation,QPushButton,100,pLabel,MainWindow
来源: https://www.cnblogs.com/FKdelphi/p/16293436.html