收集整理的一些 Qt 常用动画
[toc]
下坠效果
通过计算桌面的宽度、高度，来设置动画的起始值和结束值。
1
2
3
4
5
6
7
8
9
10
11
12
| void MainWindow::onDropWindow()
{
QPropertyAnimation *pAnimation = new QPropertyAnimation(this, "geometry");
QDesktopWidget *pDesktopWidget = QApplication::desktop();
int x = (pDesktopWidget->availableGeometry().width() - width()) / 2;
int y = (pDesktopWidget->availableGeometry().height() - height()) / 2;
pAnimation->setDuration(1000);
pAnimation->setStartValue(QRect(x, 0, width(), height()));
pAnimation->setEndValue(QRect(x, y, width(), height()));
pAnimation->setEasingCurve(QEasingCurve::OutElastic);
pAnimation->start(QAbstractAnimation::DeleteWhenStopped);
}
|
抖动效果
获取界面的坐标，然后进行上、下、左、右坐标浮动，通过setKeyValueAt()来设置每一时刻的位置，实现抖动效果。
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
| void MainWindow::onShakeWindow()
{
QPropertyAnimation *pAnimation = new QPropertyAnimation(this, "pos");
pAnimation->setDuration(500);
pAnimation->setLoopCount(2);
pAnimation->setKeyValueAt(0, QPoint(geometry().x() - 3, geometry().y() - 3));
pAnimation->setKeyValueAt(0.1, QPoint(geometry().x() + 6, geometry().y() + 6));
pAnimation->setKeyValueAt(0.2, QPoint(geometry().x() - 6, geometry().y() + 6));
pAnimation->setKeyValueAt(0.3, QPoint(geometry().x() + 6, geometry().y() - 6));
pAnimation->setKeyValueAt(0.4, QPoint(geometry().x() - 6, geometry().y() - 6));
pAnimation->setKeyValueAt(0.5, QPoint(geometry().x() + 6, geometry().y() + 6));
pAnimation->setKeyValueAt(0.6, QPoint(geometry().x() - 6, geometry().y() + 6));
pAnimation->setKeyValueAt(0.7, QPoint(geometry().x() + 6, geometry().y() - 6));
pAnimation->setKeyValueAt(0.8, QPoint(geometry().x() - 6, geometry().y() - 6));
pAnimation->setKeyValueAt(0.9, QPoint(geometry().x() + 6, geometry().y() + 6));
pAnimation->setKeyValueAt(1, QPoint(geometry().x() - 3, geometry().y() - 3));
pAnimation->start(QAbstractAnimation::DeleteWhenStopped);
}
|
透明度效果
设置每一时刻的透明度值，动画结束时界面还原（透明度再为1）。
1
2
3
4
5
6
7
8
9
| void MainWindow::onOpacityWindow()
{
QPropertyAnimation *pAnimation = new QPropertyAnimation(this, "windowOpacity");
pAnimation->setDuration(1000);
pAnimation->setKeyValueAt(0, 1);
pAnimation->setKeyValueAt(0.5, 0);
pAnimation->setKeyValueAt(1, 1);
pAnimation->start(QAbstractAnimation::DeleteWhenStopped);
}
|
是不是很有趣，还不快点儿，实现属于自己的动画。