FilterApp.h

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#ifndef __FILTERAPP_H__
#define __FILTERAPP_H__

#include <QMainWindow>
#include <QVector>
#include <QStack>

class CS123Canvas;
class CS123CanvasContainer;
class QImage;
class QDockWidget;
class FilterControl;
class FilterCanvas;
class QPushButton;

//! Top level UI for Filter
class FilterApp : public QMainWindow {
    Q_OBJECT

    public:
   FilterApp(int argc, char **argv);
   ~FilterApp();

   void addCanvas(FilterCanvas* canvas);
   void addCanvas(FilterCanvas* canvas, const char* title);

    signals:
   void applyFilter();
   void filterChanged(int type);

   private slots:
       void nonePressed();
   void greyscalePressed();
   void blurPressed();
   void scalePressed();
   void edgeDetectPressed();
   void invertPressed();
   void rotatePressed();
   void special1Pressed();
   void special2Pressed();
   void seamCarvingPressed();

   void loadPressed();
   void savePressed();

   void selectComboBox(int);

   void applyPressed(bool);

   void unsynchronizeMarquee();
   void synchronizeMarquee();

   void selectionChanged(int x1, int y1, int x2, int y2);

    private:
   void initFilterTypes(QMenu* filterMenu);
   void setCurrentFilter(int type);
   CS123Canvas *getActiveCanvas(const char *text);

   //! NOTE:  If you would like to change/add controls for your filters, 
   //! this is the method you should look at as an example.
   void setupFilterControls();

   QStack<CS123CanvasContainer *> m_canvases;
   int m_noCanvas, m_selectedCombo;

   //! filename for default image passed via command-line
   QImage *m_defaultImage;

   //! synchronize marquee between all CS123Canvas' in the app
   bool m_syncMarquee;

   int m_currentFilter;
   QDockWidget *m_controlContainer;

   QVector<FilterControl*> m_filterControls;

   QPushButton *m_applyButton;
};

#endif