国外网站排名 top100,net实用网站开发,网站开发的意义和目的,wordpress注册邮件无法打开关键技术#xff1a;
1、使用QPropertyAnimation对象#xff0c;实现动画效果#xff0c;逐渐缩小窗体尺寸#xff0c;以及透明度#xff1b;
2、在对话框缩小时#xff0c;要将界面中的控件都隐藏起来#xff0c;并且将对话框布局的Margin修改成0
代码如下#xff…关键技术
1、使用QPropertyAnimation对象实现动画效果逐渐缩小窗体尺寸以及透明度
2、在对话框缩小时要将界面中的控件都隐藏起来并且将对话框布局的Margin修改成0
代码如下
dialog.h
#ifndef DIALOG_H
#define DIALOG_H#include QDialog
#include QLabel
#include QPushButtonclass Dialog : public QDialog
{Q_OBJECT
public:Dialog(QWidget *parent nullptr);~Dialog();private:void init();void hideAllWidget(QLayout *lay);private slots:void onCloseButtonClicked();private:QLabel *m_lbInfo nullptr;QPushButton *m_btnClose nullptr;
};
#endif // DIALOG_Hdialog.cpp
#include dialog.h
#include QVBoxLayout
#include QPropertyAnimation
#include QParallelAnimationGroupDialog::Dialog(QWidget *parent): QDialog(parent)
{init();
}Dialog::~Dialog()
{
}void Dialog::init()
{this-setMaximumSize(500, 400);// 去掉标题栏this-setWindowFlags(Qt::FramelessWindowHint);m_lbInfo new QLabel(this);m_btnClose new QPushButton(关闭, this);m_lbInfo-setWordWrap(true);m_lbInfo-setText(秦时明月汉时关\n万里长征人未还。\n但使龙城飞将在\n不教胡马度阴山。);m_btnClose-setFixedSize(100, 32);QVBoxLayout *vLay new QVBoxLayout(this);vLay-setMargin(50);vLay-setSpacing(60);vLay-addWidget(m_lbInfo, 0, Qt::AlignCenter);vLay-addWidget(m_btnClose, 0, Qt::AlignRight);connect(m_btnClose, QPushButton::clicked, this, Dialog::onCloseButtonClicked);
}void Dialog::hideAllWidget(QLayout *lay)
{if (!lay)return;lay-setMargin(0);for (int i 0; i lay-count(); i) {QLayout *subLay lay-itemAt(i)-layout();if (subLay) {hideAllWidget(subLay);}QWidget *wgt lay-itemAt(i)-widget();if (wgt) {wgt-hide();}}
}void Dialog::onCloseButtonClicked()
{// 隐藏所有的组件因为这些组件若显示的话就会占据一定的位置对话框就不能缩小到0hideAllWidget(this-layout());const QRect currRect this-geometry();// 实现对话框逐渐缩小的动画QPropertyAnimation *pAnim1 new QPropertyAnimation(this, geometry);pAnim1-setStartValue(currRect);pAnim1-setEndValue(QRect(currRect.x(), currRect.y(), 0, 0));pAnim1-setEasingCurve(QEasingCurve::Linear);pAnim1-setDuration(600);// 实现对话框逐渐隐退的动画QPropertyAnimation *pAnim2 new QPropertyAnimation(this, windowOpacity);pAnim2-setStartValue(1);pAnim2-setEndValue(0.5);pAnim2-setDuration(600);QParallelAnimationGroup *animGrp new QParallelAnimationGroup(this);animGrp-addAnimation(pAnim1);animGrp-addAnimation(pAnim2);animGrp-start(QAbstractAnimation::DeleteWhenStopped);connect(animGrp, QParallelAnimationGroup::finished, this, Dialog::close);
}效果图如下
