关于qt paintevent 的问题

癫狂症患者 2017-06-06 11:02:38

程序功能是下围棋，目前棋盘画出来了，但棋子不能下
我定义了一个棋盘类继承的Qlabel

class ChessBoard : public QLabel

{

    Q_OBJECT

public:

    explicit ChessBoard(size_t row,size_t column,QWidget *parent);

    bool draw_board();

signals:

    void clicked(size_t, size_t);



public slots:

protected:

    void mouseReleaseEvent(QMouseEvent *ev);

    ~ChessBoard(){}

private:

    size_t row;

    size_t column;



    static const size_t padding = 20;

    static const size_t interval = 35;

};

在主界面类中我将这个棋盘类加到主界面的布局里了

QGridLayout *layout = new QGridLayout();

    layout->addWidget(board,0,0,1,1);

    layout->addWidget(ui->go_exit,0,1,1,1);

    layout->takeAt(0);

    qDebug()<<

    this->setLayout(layout);

然后在paintevent 中绘制棋子

void clientWidget::paintEvent(QPaintEvent *event)

{

    ui->stackedWidget->currentWidget()->layout();

    if(game != GO && game!=FIVE) {

     //   qDebug()<<"dag";

        return;

    }

    //qDebug()<<"paint";

    int GridSize=(height()-60)/18;



    QPainter p(this);//感觉是这里出了问题，应该画到棋盘上才对，我不会弄。。。

    QPen pen;

    QBrush brush;



    pen.setWidth(2);

    pen.setColor(Qt::black);

    p.setPen(pen);



    //画棋子

    int size;

    if(game==GO){

       size=Go->boardSize();

    }else if(game==FIVE){

        size=Five->boardSize();

    }



    for(int i=0;i<size ;i++){

            for(int j=0;j<size ;j++){

                StoneType current;

                if(game==GO){

                   current= Go->checkStone(i,j);

                }else if(game==FIVE){

                    current= Five->checkStone(i,j);

                }

                if(current==BLACK){

                    brush.setColor(Qt::red);

                    p.setBrush(brush);

                    p.drawEllipse(QPoint((i)*GridSize+30,(j)*GridSize+30),12,12);

                }

                else if(current==WHITE){

                    brush.setColor(Qt::white);

                    p.setBrush(brush);

                    p.drawEllipse(QPoint((i)*GridSize+30,(j)*GridSize+30),12,12);

                }

            }

        }

    this->children()



}