lcdwindow.h

#ifndef __LCDWINDOW_H__
#define __LCDWINDOW_H__

//#include <wx/event.h>
#include <wx/dcclient.h>
#include <wx/window.h>

// This structure is used internally by the window.
struct wxDigitData
{
	char value;
	bool comma;
};


class wxLCDWindow : public wxWindow
{
protected:
	int mSegmentLen;
	int mSegmentWidth;
	int mSpace;

	int mNumberDigits;
	wxString mValue;
	wxColour mLightColour;
	wxColour mGrayColour;

protected:
// Internal functions used by the control.
// No time for documentation yet. Sorry.
	int GetDigitWidth();
	int GetDigitHeight();

	int GetBitmapWidth();
	int GetBitmapHeight();

	int DigitX(int digit);
	int DigitY(int digit);

	void DoDrawing( wxDC *dc );
	void DrawSegment( wxDC *dc, int digit, int segment, bool state );
	void DrawDot( wxDC *dc, int digit, bool state );
	void DrawDigit( wxDC *dc, int digit, wxDigitData *data );
	void DrawTwoDots( wxDC *dc, int digit );

	unsigned char Decode( char c );

	void OnPaint( wxPaintEvent &event );
	void OnSize( wxSizeEvent &event );

public:
	wxLCDWindow( wxWindow *parent, wxPoint pos, wxSize size );
	virtual ~wxLCDWindow();

// Sets the desired number of digits our 7seg display.
// The default is 4.
	void SetNumberDigits( int ndigits );

// Gets the current number of digits.
	int GetNumberDigits();

/* Print a value on the display. The accepted characters are :
   - All the hexadecimal digits ( 0-F )
   - The characters :,.-EroC and space
   - The character ^ is displayed as an o, but displayed at the top. ( The symbol of degrees )
*/
	void SetValue( wxString value );

// Gets the value currently displayed.
	wxString GetValue();

// Sets the colour which the lighted parts of the display should have.
	void SetLightColour( wxColour c );

// Sets the colour that the grayed parts of the display will have.
	void SetGrayColour( wxColour c );

	wxColour GetLightColour();
	wxColour GetGrayColour();

// Returns the amount of digits required to display the current value.
// The amount of digits needed is not necessarily the length of the string.
// For example, a dot does not require an extra space in order to be displayed.
	int GetDigitsNeeded( wxString value );

DECLARE_EVENT_TABLE()
};

#endif // __LCDWINDOW_H__