c++代码分析

[jiao879111]

#include <QPainter>
#include <QtGui/QApplication>
#include <QMouseEvent>
#include<ctime>
#include <QtGui>
#include "dialog.h"
#include "ui_dialog.h"
using namespace std;

Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{


source_picture_show=false;
ui->setupUi(this);
ui->spinBox->setMinimum(2);//设置最小值
ui->spinBox->setValue(4);
n=ui->spinBox->value();
//n=4;
N=n*n;

a = new int* [n+2];
for(int i=0; i <n+2; i++)
a[i] = new int[n+2];

wsubsize=100;
hsubsize=100;

bak.load(":/new/prefix1/background3.png");
Bak=bak;

setbak();
ui->verticalWidget->setGeometry(n*wsubsize,10,100,150);
//wsize=400;
//hsize=400;
//move(100,10);
//max_n=5;




//initpicture();
//update();

}



Dialog::~Dialog()
{
delete ui;
}


void Dialog::setbak()
{

Bak=Bak.scaled( n*wsubsize , n*hsubsize,Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
QPainter pb(&Bak);
for (int i=0;i<=n*wsubsize/127;i++ )
for (int j=0;j<=n*hsubsize/127;j++)
pb.drawPixmap( i*127, j*127, bak);
}

void Dialog::paintEvent(QPaintEvent *)
{
//move( (QApplication::desktop()->width() - width())/2, (QApplication::desktop()->height() - height())/2);

//()<<"start paint";
//setFixedHeight(n*hsubsize);

//setFixedWidth(n*wsubsize+100);


int i,j,p;
QPainter painter(this);
if (source_picture_show)
painter.drawPixmap( 0, 0, pix);
else
{



painter.drawPixmap( 0, 0, Bak);
for (int l=1;l<=pixmaps.size();l++)
{
i=(l-1)%n+1;
j=(l-1)/n+1;
p=a[i][j]-1;
if (p<pixmaps.size()-1)
painter.drawPixmap( (i-1)*wsubsize, (j-1)*hsubsize, pixmaps[p]);
}
}


}

void Dialog::mousePressEvent(QMouseEvent *m)
{

if (source_picture_show)
return;
else
{
int x = m->pos().x();
int y = m->pos().y();
hit(x/wsubsize+1 , y/hsubsize+1);
}
}

void Dialog::hit(int i,int j)
{
if (i<1 || j<1 || i>n || j>n)
return;
if (a[i-1][j]==N)
{

a[i-1][j]=a[i][j];
a[i][j]=N;
}
else if (a[i+1][j]==N)
{
a[i+1][j]=a[i][j];
a[i][j]=N;
}
else if (a[i][j-1]==N)
{
a[i][j-1]=a[i][j];
a[i][j]=N;
}
else if (a[i][j+1]==N)
{
a[i][j+1]=a[i][j];
a[i][j]=N;
}

update();
if (check())
{
QMessageBox msgBox(this);
msgBox.setText(tr("success!"));
msgBox.exec();
//initrandom();
//refresh();
}
}

void Dialog::randomp()
{
for(int i=0; i <n+2; i++)
for(int j=0; j <n+2; j++)
{
if (i==0 || j==0 || i==n+1 || j==n+1)
a[i][j]=0;
else
a[i][j]=(j-1)*n+i;
}
int i,j;
int p;
for(int l=1;l<100*N;l++)
{
p=findN();
i=(p-1)%n+1;
j=(p-1)/n+1;

switch (rand()%4)
{
case 0:
if ((i-1)>0)
swap(a[i][j],a[i-1][j]);
break;
case 1:
if ((i+1)<n+1)
swap(a[i][j],a[i+1][j]);
break;
case 2:
if ((j-1)>0)
swap(a[i][j],a[i][j-1]);
break;
case 3:
if ((j+1)<n+1)
swap(a[i][j],a[i][j+1]);
break;
}
}

}

void Dialog::initpicture()
{

QString tempfile;
//tempfile = QFileDialog::getOpenFileName(this, tr("Open"));
tempfile = QFileDialog::getOpenFileName(this,
tr("Open Image"), "./pictures", tr("Image Files (*.png *.jpg *.bmp)"));

if (!pix.load(tempfile))
{
////()<<"?";
return;
}
n=ui->spinBox->value();
N=n*n;
//()<<"ok4";
a = new int* [n+2];
for(int i=0; i <n+2; i++)
a[i] = new int[n+2];


wsize = pix.width();
hsize = pix.height();
if (hsize>700)
{
pix=pix.scaled( wsize*700/hsize, 700, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
wsize = pix.width();
hsize = pix.height();
}
else if (hsize<400)
{
pix=pix.scaled( wsize*400/hsize, 400, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
wsize = pix.width();
hsize = pix.height();
}

wsubsize = wsize/n;
hsubsize = hsize/n;
pix = pix.copy(0,0, n*wsubsize, n*hsubsize);

pixmaps.clear();

//()<<pixmaps.length();

for (int y = 0; y < n; y++)
{
for (int x = 0; x < n; x++)
{
QPixmap pieceImage = pix.copy(x*wsubsize, y*hsubsize, wsubsize, hsubsize);
pixmaps.append(pieceImage);
}
}
//pixmaps[pixmaps.size()-1]=QPixmap(subsize, subsize);
//pixmaps[pixmaps.length()-1].fill(QColor(200, 200, 200));
randomp();
setbak();
setGeometry( (QApplication::desktop()->width() - (n*wsubsize+100))/2, (QApplication::desktop()->height() - n*hsubsize)/2,
n*wsubsize+100,n*hsubsize);
//ui->pushButton ->setGeometry(n*wsubsize+10,10,80,23);
//ui->pushButton_2->setGeometry(n*wsubsize+10,50,80,23);
ui->verticalWidget->setGeometry(n*wsubsize,10,100,150);
update();
//move( (QApplication::desktop()->width() - width())/2, (QApplication::desktop()->height() - height())/2);
//qDebug()<<QApplication::desktop()->width()<<width();
//pix.fill( &pixmaps[pixmaps.length()-1],0,0);
}

int Dialog::findN()
{
for (int i=1;i<=n;i++)
for (int j=1;j<=n;j++)
if (a[i][j]==N)
return n*(j-1)+i;
//return 0;
}

bool Dialog::check()
{
bool good=true;
for (int i=1;i<=n;i++)
for (int j=1;j<=n;j++)
good=good&&(a[i][j]==n*(j-1)+i);
return good;
}

void Dialog::on_pushButton_clicked()
{
initpicture();
//()<<"ok";

}

void Dialog::on_pushButton_2_clicked()
{
//setGeometry(x(),y(),2*n*subsize+100, n*subsize);
if (source_picture_show)
{
//setFixedWidth(n*wsubsize+100);
ui->pushButton_2->setText(tr("show image"));
source_picture_show=false;
update();
}
else
{
//setFixedWidth(2*n*wsubsize+100);
ui->pushButton_2->setText(tr("Back game"));
source_picture_show=true;
update();
}

}



void Dialog::on_spinBox_editingFinished()
{

}

[fly_dragon_fly]

是什么问题要说清楚

[jiao879111]

帮忙注释一下

[老王爱上猫]

能注意格式贴么，另外也说下问题呗

[赵4老师]

代码功能归根结底不是别人帮自己看或讲解或注释出来的；而是被自己静下心来花足够长的时间和精力亲自动手单步或设断点或对执行到某步获得的中间结果显示或写到日志文件中一步一步分析出来的。 提醒：再牛×的老师也无法代替学生自己领悟和上厕所！ 单步调试和设断点调试（VS IDE中编译连接通过以后，按F10或F11键单步执行，按Shift+F11退出当前函数；在某行按F9设断点后按F5执行停在该断点处。）是程序员必须掌握的技能之一。

[jiao879111]

这是一个拼图游戏

[jiao879111]

void Dialog::hit(int i,int j) { if (i<1 || j<1 || i>n || j>n) return; if (a[i-1][j]==N) { a[i-1][j]=a[i][j]; a[i][j]=N; } else if (a[i+1][j]==N) { a[i+1][j]=a[i][j]; a[i][j]=N; } else if (a[i][j-1]==N) { a[i][j-1]=a[i][j]; a[i][j]=N; } else if (a[i][j+1]==N) { a[i][j+1]=a[i][j]; a[i][j]=N; } 你能帮我分析一下这些数组的意思么？

[侯壮壮]

这是不是一个打砖块的游侠？