#include "selectscene.h"
#include<QPushButton>
#include <QPainter>
#include <QMenuBar>
#include <mypushbuttom.h>
#include "playscene.h"
#include <QSound>
SelectScene::SelectScene(QWidget *parent) : MyMainWindow(parent)
{
    //返回按钮
    MyPushButtom *btnBack = new MyPushButtom(":/res/BackButton.png",":/res/BackButtonSelected.png",this);

    btnBack->resize(72,32);

    connect(btnBack,&QPushButton::clicked,this,&SelectScene::backBtnClicked);

    btnBack->move(this->width()-btnBack->width(),this->height()- btnBack->height());
    //关卡按钮20个
    const int colWidth = 70;
    const int rowHeight = 70;
    //x y 偏移
    const int xOffset = 25;
    const int yOffset = 130;

    for (int i = 0;i<20;++i)
    {
      MyPushButtom *btn = new MyPushButtom(":/res/LevelIcon.png",":/res/LevelIcon.png",this);
      btn->setText(QString::number(i+1));
      //排列
      //行 i / 4
      //列 i % 4

      int row = i/4;
      int col = i%4;
      //x 坐标 = 列数 * 列宽 + x偏移
      //y 坐标 = 行数 * 行高 + y偏移
      int x = col *colWidth+xOffset;
      int y = row * rowHeight+yOffset;
      btn->resize(57,57);
      btn->move(x,y);

      connect(btn,&MyPushButtom::clicked,[=](){
        QSound::play(":/res/TapButtonSound.wav");

        //点击关卡按钮后打开一个新的场景PlayScene
        PlayScene *playScene = new PlayScene(i+1);
        //设置playScene关闭的时候自动释放
        playScene->setAttribute(Qt::WA_DeleteOnClose);
        playScene->move(this->pos());
        playScene->show();
        this->hide();

        connect(playScene,&PlayScene::backBtnClicked,[=](){
           QSound::play(":/res/BackButtonSound.wav");
           this->move(playScene->pos());
           this->show();
           //使用关闭
           playScene->close();
        });
      });
    };
}

void SelectScene::paintEvent(QPaintEvent *event)
{
    //画家对象
    QPainter painter(this);
    painter.translate(0,this->menuBar()->height());
    //背景图片的pixmap
    QPixmap pix(":/res/OtherSceneBg.png");
    //在0,0坐标开始绘制图片
    //这里第三、四个参数指定宽高可以让图片根据窗口大小进行缩放
    painter.drawPixmap(0,0,this->width(),this->height(),pix);
    pix.load(":/res/Title.png");
    painter.drawPixmap(0,0,pix);
}