1.项目简介及创建
#include "bird.h"
Bird::Bird(QWidget *parent) : QWidget(parent)
{
//加载所有图片
for(int i = 0 ; i < this->max;i++)
{
QString str = QString(":/Bird/bird%1.png").arg(i+1);
this->m_bird_Pix.load(str);
}
//设置鸟的大小
this->setFixedSize(this->m_bird_Pix.width(),this->m_bird_Pix.height());
//创建定时器
this->timer = new QTimer(this);
//监听定时器
connect(timer,&QTimer::timeout,[=](){
QString str = QString(":/Bird/bird%1.png").arg(this->min++);
this->m_bird_Pix.load(str);
if(this->min > this->max)
{
this->min = 1;
}
emit changePix(); //告诉窗口正在做切图
});
//创建菜单
this->m_Menu = new QMenu();
//监听菜单下的退出菜单项
connect(this->m_Menu->addAction("退出"),&QAction::triggered,[=](){
exit(0);
});
}
void Bird::running()
{
this->timer->start(70);
}
void Bird::mousePressEvent(QMouseEvent *event)
{
this->m_Pos = event->globalPos() - ((QWidget *) (this->parent()))->frameGeometry().topLeft();
this->mouseDown = true; //鼠标按下，将状态改为true
//右键菜单弹出
if(event->button() == Qt::RightButton)
{
this->m_Menu->popup(QCursor::pos());
}
//窗口消失后 重置鼠标按下状态
connect(this->m_Menu,&QMenu::aboutToHide,[=](){
this->mouseDown = false;
});
}
void Bird::mouseMoveEvent(QMouseEvent *event)
{
//发送自定义信号，告诉窗口移动的位置
emit this->moving( event->globalPos() - this->m_Pos );
}
void Bird::mouseReleaseEvent(QMouseEvent *event)
{
//鼠标释放 ，视为鼠标没有按下
this->mouseDown = false;
}
2.导入资源
3.鸟类创建
4.鸟动画实现
5.鼠标拖拽
6.自动移动
7.右键菜单
8.窗口透明化
