mainwindow.h

// RAN 2015-07-03 - Moved some prototypes to filter.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QFileDialog>
#include <QDir>
#include <QMessageBox>
#include <QSlider>
#include <QShortcut>
#include <QMessageBox>

#define WHITE 0xffffffff
#define BLACK 0xff000000

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);

    void GrayScale(QImage &);

    void VerticalFlip(QImage &);

    void HorizontalFlip(QImage &);

    void ThresholdFilter(QImage &, QImage &,unsigned int , bool);

    ~MainWindow();

private slots:

    void on_actionLoad_Image_triggered();

    void on_actionSave_Image_triggered();

    void on_actionClose_Window_triggered();

    void on_actionInvert_Threshold_Colors_triggered();

    void on_actionFlip_Image_Horizontally_triggered();

    void on_actionFlip_Image_Vertically_triggered();

    void on_actionApply_Grey_Scale_Filter_triggered();

    void on_actionRevert_Edited_Image_to_Original_triggered();

    void on_actionInstructions_triggered();


    void applyThresholdFilter();

    void instructions();


    void on_thresholdSlider_sliderReleased();

    void on_btnLoadImage_clicked();

    void on_btnSaveImage_clicked();

    void on_chboxThreshold_clicked();

    void on_btnInvertThreshold_clicked();

    void on_btnFlipImageHorizontally_clicked();

    void on_btnFlipImageVertically_clicked();

    void on_btnGreyScaleFilter_clicked();

    void on_btnRevertImage_clicked();

private:
    Ui::MainWindow *ui;
    QImage originalImage;  //This will hold the original image.
    QImage editedImage;    //This will hold the edited image.
    bool invertColor;   //Boolean value of the switch button for the threshold filter.
};

#endif // MAINWINDOW_H