#include "cannydialog.h"
#include "ui_cannydialog.h"

CannyDialog::CannyDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::CannyDialog)
{
    ui->setupUi(this);
    this->lowThreshold=100;
}

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

void CannyDialog::on_buttonBox_accepted()
{
    emit sendImage(dst);
}

void CannyDialog::receiveImage(Mat oldimage){
    this->image=oldimage;
    this->calCanny();
    this->flush();
}
void CannyDialog::flush(){
    Mat showimage = dst.clone();
    cvtColor(showimage,showimage,CV_BGR2RGB);
    QImage img = QImage((const unsigned char*)(showimage.data),showimage.cols,showimage.rows,showimage.step,QImage::Format_RGB888);
    ui->graphicsView->resize(img.width(), img.height());
    QGraphicsScene *scene = new QGraphicsScene;
    //scene->setSceneRect(0,0,img.width(),img.height());
    scene->addPixmap(QPixmap::fromImage(img));
    ui->graphicsView->setScene(scene);
    ui->graphicsView->adjustSize();
    ui->graphicsView->show();
}

void CannyDialog::calCanny(){
    cvtColor(image,dst,CV_BGR2GRAY);
    Canny(dst,dst,lowThreshold,lowThreshold*3,3);
    cvtColor(dst,dst,CV_GRAY2BGR);
}

void CannyDialog::on_SliNum_valueChanged(int value)
{
    this->lowThreshold=value;
    ui->laNum->setNum(value);
    this->calCanny();
    this->flush();
}