chooselevelscene.cpp

#include "chooselevelscene.h"

#include <QMenuBar>
#include <QPainter>
#include <QTimer>
#include <QLabel>
#include <QDebug>
#include <QSound>

ChooseLevelScene::ChooseLevelScene(QWidget *parent) : QMainWindow(parent)
{
    //固定宽高
    this->setFixedSize(320,588);
    //设置应用图片
    this->setWindowIcon(QPixmap(":/res/Coin0001.png"));
    //设置窗口标题
    this->setWindowTitle("翻金币关卡选择");

    //无ui文件，自定义
    //创建菜单栏
    QMenuBar *bar = menuBar();
    setMenuBar(bar);
    //创建开始菜单
    QMenu *startMenu = bar->addMenu("开始");
    //创建退出菜单项
    QAction *quitAction = startMenu->addAction("退出");
    connect(quitAction,&QAction::triggered,[=](){
        this->close();
    });

    backBtn = new myPushButton(":/res/BackButton.png",":/res/BackButtonSelected.png");
    backBtn->setParent(this);
    backBtn->move(this->width() - backBtn->width() , this->height() - backBtn->height());
    connect(backBtn,&QPushButton::clicked,this,&ChooseLevelScene::back);

    this->todo();//操作为创建关卡选择按钮
}

void ChooseLevelScene::paintEvent(QPaintEvent *)
{
    QPainter paint(this);
    QPixmap pix;
    pix.load(":/res/OtherSceneBg.png");//背景
    paint.drawPixmap(0,0,this->width(),this->height(),pix);

    //画背景上的图标
    pix.load(":/res/Title.png");
    paint.drawPixmap(this->width() * 0.5 - pix.width() * 0.5 ,30,pix.width() ,pix.height(),pix);
}

void ChooseLevelScene::back()
{
    QSound * backSound = new QSound(":/res/TapButtonSound.wav",this);
    backSound->play();
    //告诉主场景返回信号，主场景监听信号
    QTimer::singleShot(100,[=](){
       //第一种解决方法，父类指针
       //this->hide();
       //m_parent->show();

       //第二种解决方法 使用信号和槽 发送信号
        emit this->chooseBackCenario();
    });
}

void ChooseLevelScene::todo()
{
    //创建关卡选择按钮
    for(int i = 0;i < 20;i++)
    {
        myPushButton *menuBtn = new myPushButton(":/res/LevelIcon.png");
        menuBtn->setParent(this);
        //25是总体和窗口的间距 70是每个间距
        menuBtn->move(25 + i % 4 * 70 ,130 + i / 4 * 70);
        //在上面打上数字
       QLabel * label = new QLabel(this);
       label->setFixedSize(menuBtn->width(),menuBtn->height());
       label->setText(QString::number(i + 1));
       label->move(25 + i % 4 * 70 ,130 + i / 4 * 70);
       //垂直和水平居中
       label->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter);

       //设置让鼠标进行穿透 51号属性
       label->setAttribute(Qt::WA_TransparentForMouseEvents);
        //监听按钮的点击 关卡选择界面
       connect(menuBtn,&QPushButton::clicked,[=](){
            QSound *chooseSound = new QSound(":/res/TapButtonSound.wav",this);
            chooseSound->play();
            //qDebug() << QString("你选择的是第 %1 关").arg(i + 1);
            this->play = new PlayScene(i+1);
            this->play->setGeometry(this->geometry());
            this->play->show();
            QTimer::singleShot(300,this,[=](){
                this->hide();
            });

            //关卡界面发送退出信号，关卡选择界面响应
            connect(this->play,&PlayScene::chooseBackCenario,[=](){
                this->setGeometry(play->geometry());
                this->show();
                QTimer::singleShot(300,this,[=](){
                    play->hide();
                    delete play;
                    play = NULL;
                });

            });
        });
    }
}