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.qrcView 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.
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_HView 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
作者：疯狂Delphi
