screen.h

在ARM9和ARMLinux下利用QT编写的实时数据采集

#ifndef SCREEN_H
#define SCREEN_H

#include <qframe.h>
#include <qvaluevector.h>
#include <qpixmap.h> 
#include <qpainter.h>

#define FRAMEWIDTH		3
#define STEP			5
#define BASEFONTHEIGHT		12	//20
#define BASELINELENGHT 	5
#define SPACEMARGIN		2	//5
//#define StringYTitle	QObject::tr( "Operation Value" )
//#define StringXTitle	QObject::tr( "Time (hh:mm:ss)" )
//class QPixmap;
class QRect;
//class QPainter;
class QString;

class Screen : public QFrame {
	Q_OBJECT
public:
	//enum { FrameWidth = 3, Step = 5, BaseFontHeight =20 };
	//enum { BaseLineLenght = 5 };
	//enum { SpaceMargin = 5};
	Screen( QWidget *parent=0, const char *name=0, WFlags flags=0 );
	
    
	void animate( double y);
	void setXTitle(	QString str );
	void setYTitle( QString str );
	//void init();


protected:
   	void initNumber( void );
  	void initCordinate( QPainter &p );
	void updateCurve( QPainter &p );
	//virtual void paintEvent ( QPaintEvent * );
	virtual void showEvent ( QShowEvent * );
	virtual void hideEvent ( QHideEvent * );
	QSize minimumSize () const;

public:  
	double newY, oldY;
	int numXTicks, numYTicks;
	QValueVector< double > Yval;
	bool firstShow;
	
	int sec, min, hour;
	int numX;

	bool drawDotLine;

	QPixmap saveBuffer, newBuffer, midBuffer;
	QRect rectCordinate;
	QRect fromSaveRect;
	QRect toNewRect;
	QRect rectYText;
	QRect rectXText;
	/*We use this painter to draw evering on the newbuffer.*/
	QPainter drawPainter;

	QString stringYTitle;
	QString stringXTitle;
};

#endif /*SCREEN_H*/