mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QFileDialog>
#include <QMdiSubWindow>
#include "dlgimage.cpp"
#include <QDesktopWidget>

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    connect(ui->actionOpen,SIGNAL(triggered()),this,SLOT(open()));
    connect(ui->actionSave_As,SIGNAL(triggered()),this,SLOT(save_as()));
    connect(ui->actionGrayscale, SIGNAL(triggered()), this, SLOT(gray_scale()));
    connect(ui->actionHistogram, SIGNAL(triggered()), this, SLOT(show_histogram()));
    connect(ui->actionBinarization, SIGNAL(triggered()), this, SLOT(show_binarization()));
    connect(ui->actionRecognition, SIGNAL(triggered()), this, SLOT(show_recognition()));

    connect(&mdiArea, SIGNAL(subWindowActivated(QMdiSubWindow*)), this, SLOT(subwindow_changed(QMdiSubWindow*)));

    //Window
    QDesktopWidget desktop;

    int width = geometry().width();
    int height = geometry().height();

    int screenWidth = desktop.screen()->width();
    int screenHeight = desktop.screen()->height();

    setGeometry((screenWidth/2)-(width/2),(screenHeight/2)-(height/2),width,height);
    setCentralWidget(&mdiArea);

    // Histogram dialog
    histogramDlg = new dlgHistogram(&mdiArea);
    mdiArea.addSubWindow(histogramDlg);

    histogramDlg->parentWidget()->hide();

    // Binarization dialog
    binarizationDlg = new dlgBinarization(&mdiArea);
    mdiArea.addSubWindow(binarizationDlg);

    binarizationDlg->parentWidget()->hide();

    // Recognition dialog
    recognitionDlg = new dlgRecognition(&mdiArea);
    mdiArea.addSubWindow(recognitionDlg);

    recognitionDlg->parentWidget()->hide();
}

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

// Private SLOTS

void MainWindow::open()
{
    QString fileName;

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

    if(fileName == NULL)
        return;

    ui->statusBar->showMessage(fileName);

    dlgImage *w;
    w=new dlgImage(&mdiArea);
    w->setFileName(fileName);
    w->setStatusBar(ui->statusBar);

    mdiArea.addSubWindow(w);
    w->show();

    this->update_histogram();
    this->update_binarization();
    this->update_recognition();
}


void MainWindow::save_as()
{
    QString fileName;
    fileName = QFileDialog::getSaveFileName(this, tr("Save Image"), "/", tr("Image Files (*.png *.jpg *.bmp)"));

    ui->statusBar->showMessage(fileName);
    //ui->label->pixmap()->save(fileName);
}

void MainWindow::gray_scale()
{
    QWidget* selectedWindow = this->mdiArea.getSelectedWindow();

    if(selectedWindow==NULL)
        return;

    dlgImage* dialog = (dlgImage*)selectedWindow;

    QImage image = dialog->getImage();
    imageProcessor.setImage(image);

    QImage gray = imageProcessor.grayScale();
    dialog->setImage(gray);
}

void MainWindow::show_histogram()
{
    QWidget* parent = histogramDlg->parentWidget();
    bool actionChecked = ui->actionHistogram->isChecked();

    if(actionChecked){
        parent->show();
        this->update_histogram();
    }else{
        parent->hide();
    }
}

void MainWindow::show_binarization()
{
    QWidget* parent = binarizationDlg->parentWidget();
    bool actionChecked = ui->actionBinarization->isChecked();

    if(actionChecked){
        parent->show();
        this->update_binarization();
    }else{
        parent->hide();
    }
}

void MainWindow::show_recognition()
{
    QWidget* parent = recognitionDlg->parentWidget();
    bool actionChecked = ui->actionRecognition->isChecked();

    if(actionChecked){
        parent->show();
        this->update_recognition();
    }else{
        parent->hide();
    }
}

void MainWindow::update_histogram()
{
    dlgImage* selected = this->mdiArea.getSelectedWindow();
    histogramDlg->setImage(selected);
}
void MainWindow::update_binarization()
{
    dlgImage* selected = this->mdiArea.getSelectedWindow();
    binarizationDlg->setImage(selected);
}

void MainWindow::update_recognition()
{
    dlgImage* selected = this->mdiArea.getSelectedWindow();
    recognitionDlg->setImage(selected);
}

void MainWindow::subwindow_changed(QMdiSubWindow* window)
{
    if(window==NULL)
        return;

    QWidget* widget = window->widget();
    dlgImage* selectedWindow = dynamic_cast<dlgImage*>(widget);

    this->histogramDlg->setImage(selectedWindow);
    this->binarizationDlg->setImage(selectedWindow);
    this->recognitionDlg->setImage(selectedWindow);
}