#ifndef __GOTO_FLOW_H
#define __GOTO_FLOW_H

#include <QLineEdit>
#include <QPushButton>
#include <QPixmap>
#include <QThread>
#include <QSize>
#include <QIntValidator>
#include <QWaitCondition>
#include <QObject>
#include <QEvent>
#include <QLabel>
#include "custom_widgets.h"
class Comic;

class SlideInitializer;
class PageLoader;

class GoToFlow : public QWidget
{
	Q_OBJECT
public:
	GoToFlow(QWidget* parent = 0,PictureFlow::FlowType flowType = PictureFlow::CoverFlowLike);
	bool ready; //comic is ready for read.
	void keyPressEvent(QKeyEvent* event);
	bool eventFilter(QObject *target, QEvent *event);
private:
	YACReaderFlow * flow;
	QLineEdit * edit;
	QIntValidator * v;
	QPushButton * centerButton;
	QPushButton * goToButton;
	Comic * comic;
	QSize imageSize;

	QVector<bool> imagesLoaded;
	QVector<bool> imagesSetted;
	uint numImagesLoaded;
	QVector<bool> imagesReady;
	QVector<QByteArray> rawImages;
	QTimer* updateTimer;
	PageLoader* worker;
	virtual void wheelEvent(QWheelEvent * event);

	private slots:
		void preload();
		void updateImageData();

		public slots:
			void goTo();
			void setPageNumber(int page);
			void centerSlide();
			void centerSlide(int slide);
			void reset();
			void setNumSlides(unsigned int slides);
			void setImageReady(int index,const QByteArray & image);
			void setFlowType(PictureFlow::FlowType flowType);
			void updateSize();
signals:
			void goToPage(unsigned int page);


};
//-----------------------------------------------------------------------------
//SlideInitializer
//-----------------------------------------------------------------------------
class SlideInitializer : public QThread
{
public:
	SlideInitializer(PictureFlow * flow,int slides);
private:
	PictureFlow * _flow;
	int _slides;
	void run();
};
//-----------------------------------------------------------------------------
//PageLoader
//-----------------------------------------------------------------------------
class PageLoader : public QThread
{
public:
	PageLoader();
	~PageLoader();
	// returns FALSE if worker is still busy and can't take the task
	bool busy() const;
	void generate(int index, QSize size,const QByteArray & rImage);
	void reset(){idx = -1;};
	int index() const { return idx; }
	QImage result() const { return img; }
protected:
	void run();
private:
	QWaitCondition condition;

	bool restart;
	bool working;
	int idx;

	QSize size;
	QImage img;
	QByteArray rawImage;
};

#endif