hardware.c

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

{
    if(ohandlers.Flush)
        ohandlers.Flush();
}

//*************************************************************************
// EnableScroll()
//
//*************************************************************************
void EnableScroll(USHORT Window)
{
    ENTER_FUNC();
	wWindow[Window].bScrollDisabled=FALSE;
    LEAVE_FUNC();
}

//*************************************************************************
// DisableScroll()
//
//*************************************************************************
void DisableScroll(USHORT Window)
{
    ENTER_FUNC();
	wWindow[Window].bScrollDisabled=TRUE;
    LEAVE_FUNC();
}


//*************************************************************************
// ShowCursor()
//
// show hardware cursor
//*************************************************************************
void ShowCursor(void)
{
    ohandlers.ShowCursor();
}

//*************************************************************************
// HideCursor()
//
// hide hardware cursor
//*************************************************************************
void HideCursor(void)
{
    ohandlers.HideCursor();
}

//*************************************************************************
// SetForegroundColor()
//
// set foreground color
//*************************************************************************
void SetForegroundColor(ECOLORS c)
{
//    ENTER_FUNC();

    ohandlers.SetForegroundColor(c);

//    LEAVE_FUNC();
}

//*************************************************************************
// SetBackgroundColor()
//
// set background color
//*************************************************************************
void SetBackgroundColor(ECOLORS c)
{
//    ENTER_FUNC();

    ohandlers.SetBackgroundColor(c);

//    LEAVE_FUNC();
}

//*************************************************************************
// PutChar()
//
// put a zero terminated string at position (x,y)
//*************************************************************************
void PutChar(LPSTR p,ULONG x,ULONG y)
{
	ULONG i;

//    ENTER_FUNC();

    Acquire_Output_Lock();

	for(i=0;p[i]!=0;i++)
	{
		if((UCHAR)p[i]>=0x20 && (UCHAR)p[i]<0x80)
		{
			PrintGraf(x+i,y,p[i]);
		}
	}

    Flush();

    Release_Output_Lock();

//    LEAVE_FUNC();
}

//*************************************************************************
// CopyLineTo()
//
// copy a line from src to dest
//*************************************************************************
void CopyLineTo(USHORT dest,USHORT src)
{
    ohandlers.CopyLineTo(dest,src);
}

//*************************************************************************
// InvertLine()
//
// invert a line on the screen
//*************************************************************************
void InvertLine(ULONG line)
{
    ohandlers.InvertLine(line);
}

//*************************************************************************
// HatchLine()
//
// hatches a line on the screen
//*************************************************************************
void HatchLine(ULONG line)
{
    ohandlers.HatchLine(line);
}

//*************************************************************************
// ClrLine()
//
// clear a line on the screen
//*************************************************************************
void ClrLine(ULONG line)
{
    ohandlers.ClrLine(line);
}

//*************************************************************************
// ScrollUp()
//
// Scroll a specific window up one line
//*************************************************************************
void ScrollUp(USHORT Window)
{
    USHORT i;

    return;

	if(!wWindow[Window].bScrollDisabled)
	{
		for(i=1;i<wWindow[Window].cy;i++)
		{
			CopyLineTo((USHORT)(wWindow[Window].y+i-1),(USHORT)(wWindow[Window].y+i));
		}
		ClrLine((USHORT)(wWindow[Window].y+wWindow[Window].cy-1));
	}
}

//*************************************************************************
// Home()
//
// cursor to home position
//*************************************************************************
void Home(USHORT Window)
{
	wWindow[Window].usCurX=0;
    wWindow[Window].usCurY=0;

}

//*************************************************************************
// Clear()
//
// clear a specific window
//*************************************************************************
void Clear(USHORT Window)
{
    ULONG j;

    for(j=0;j<wWindow[Window].cy;j++)
    {
		ClrLine(wWindow[Window].y+j);
    }

    Home(Window);
}

//*************************************************************************
// PrintCaption()
//
//*************************************************************************
void PrintCaption(void)
{
    const char title[]=" PrivateICE system level debugger (REACTOS) ";

    SetForegroundColor(COLOR_TEXT);
	SetBackgroundColor(COLOR_CAPTION);

	ClrLine(0);
	PutChar((LPSTR)title,
		   (GLOBAL_SCREEN_WIDTH-sizeof(title))/2,
           0);

    ResetColor();
}

//*************************************************************************
// PrintTemplate()
//
// print the screen template
//*************************************************************************
void PrintTemplate(void)
{
    USHORT i,j;

	ENTER_FUNC();

    ResetColor();

    for(j=0;j<4;j++)
    {
	    for(i=wWindow[j].y;i<(wWindow[j].y+wWindow[j].cy);i++)
        {
		    ClrLine(i);
        }
    }

    PrintCaption();

	SetForegroundColor(COLOR_TEXT);
	SetBackgroundColor(COLOR_CAPTION);

	ClrLine(wWindow[DATA_WINDOW].y-1);
	ClrLine(wWindow[SOURCE_WINDOW].y-1);
	ClrLine(wWindow[OUTPUT_WINDOW].y-1);

    ResetColor();

	ShowRunningMsg();
    PrintLogo(TRUE);

	LEAVE_FUNC();
}

//*************************************************************************
// PrintLogo()
//
//*************************************************************************
void PrintLogo(BOOLEAN bShow)
{
    ohandlers.PrintLogo(bShow);
}

//*************************************************************************
// PrintCursor()
//
// emulate a blinking cursor block
//*************************************************************************
void PrintCursor(BOOLEAN bForce)
{
    ohandlers.PrintCursor(bForce);
}

//*************************************************************************
// Print()
//
//*************************************************************************
void Print(USHORT Window,LPSTR p)
{
	ULONG i;

	DPRINT((11,"%s",p));

    //ENTER_FUNC();
    if(!bConsoleIsInitialized)
    {
        DPRINT((0,"Print(): console is not initialized!\n"));
        //LEAVE_FUNC();
        return;
    }


    // the OUTPUT_WINDOW is specially handled
	if(Window == OUTPUT_WINDOW)
	{
        DPRINT((0,"Print(): OUTPUT_WINDOW\n"));
		if(AddToRingBuffer(p))
        {
            DPRINT((0,"Print(): checking ring buffer\n"));
            CheckRingBuffer();
        }
        else
        {
            DPRINT((0,"Print(): outputting a line from ring buffer\n"));
            wWindow[OUTPUT_WINDOW].usCurX = 0;
		    ClrLine(wWindow[OUTPUT_WINDOW].y+wWindow[OUTPUT_WINDOW].usCurY);
    		Print(OUTPUT_WINDOW_UNBUFFERED,aBuffers[ulInPos]);
        }
	}
	else
	{
        BOOLEAN bOutput = TRUE;

		if(Window == OUTPUT_WINDOW_UNBUFFERED)
        {
			Window = OUTPUT_WINDOW;
        }

        for(i=0;p[i]!=0;i++)
		{
            if(wWindow[Window].usCurX > (GLOBAL_SCREEN_WIDTH-1))
                bOutput = FALSE;

			// newline
			if(p[i]=='\n')
			{
				wWindow[Window].usCurX = 0;
				wWindow[Window].usCurY++;
				if(wWindow[Window].usCurY>=wWindow[Window].cy)
				{
					wWindow[Window].usCurY=wWindow[Window].cy-1;
					ScrollUp(Window);
				}
                if(wWindow[Window].bScrollDisabled==TRUE)break;
			}
			// backspace
			else if(p[i]=='\b')
			{
				if(wWindow[Window].usCurX>0)
				{
					wWindow[Window].usCurX--;
                    if(bOutput)
					    PrintGraf(wWindow[Window].usCurX,wWindow[Window].y+wWindow[Window].usCurY,0x20);
				}

			}
			// TAB
			else if(p[i]=='\t')
			{
				if((wWindow[Window].usCurX + 4) < (GLOBAL_SCREEN_WIDTH-1))
				{
					wWindow[Window].usCurX += 4;
				}
			}
			else
			{
				if((UCHAR)p[i]<0x20 && (UCHAR)p[i]>0x7f)
					p[i]=0x20;

                if(bOutput)
    				PrintGraf(wWindow[Window].usCurX,wWindow[Window].y+wWindow[Window].usCurY,p[i]);

				wWindow[Window].usCurX++;
			}
		}

        // flush
        Flush();
	}
    //LEAVE_FUNC();
}


//*************************************************************************
// SaveGraphicsState()
//
//*************************************************************************
void SaveGraphicsState(void)
{
    ohandlers.SaveGraphicsState();
}

//*************************************************************************
// RestoreGraphicsState()
//
//*************************************************************************
void RestoreGraphicsState(void)
{
    ohandlers.RestoreGraphicsState();
}

//*************************************************************************
// SetWindowGeometry()
//
//*************************************************************************
void SetWindowGeometry(PVOID pWindow)
{
    PICE_memcpy(wWindow,pWindow,sizeof(wWindow));
}

// INPUT handlers

//*************************************************************************
// GetKeyPolled()
//
//*************************************************************************
UCHAR GetKeyPolled(void)
{
    return ihandlers.GetKeyPolled();
}

//*************************************************************************
// FlushKeyboardQueue()
//
//*************************************************************************
void FlushKeyboardQueue(void)
{
    ihandlers.FlushKeyboardQueue();
}


//*************************************************************************
// ConsoleInit()
//
// init terminal screen
//*************************************************************************
BOOLEAN ConsoleInit(void)
{
    BOOLEAN bResult = FALSE;

    ENTER_FUNC();

    // preset ohandlers and ihandler to NULL
    PICE_memset((void*)&ohandlers,0,sizeof(ohandlers));
    PICE_memset((void*)&ihandlers,0,sizeof(ihandlers));

    switch(eTerminalMode)
    {
        case TERMINAL_MODE_HERCULES_GRAPHICS:
            bResult = ConsoleInitHercules();
            break;
        case TERMINAL_MODE_HERCULES_TEXT:
            break;
        case TERMINAL_MODE_VGA_TEXT:
            bResult = ConsoleInitVga();
            break;
        case TERMINAL_MODE_SERIAL:
            bResult = ConsoleInitSerial();
            break;
        case TERMINAL_MODE_NONE:
        default:
            // fail
            break;
    }

    // check that outputhandlers have all been set
    // ohandlers.Flush may be zero on return
    if( !ohandlers.ClrLine              ||
        !ohandlers.CopyLineTo           ||
        !ohandlers.HatchLine            ||
        !ohandlers.HideCursor           ||
        !ohandlers.InvertLine           ||
        !ohandlers.PrintCursor          ||
        !ohandlers.PrintGraf            ||
        !ohandlers.PrintLogo            ||
        !ohandlers.RestoreGraphicsState ||
        !ohandlers.SaveGraphicsState    ||
        !ohandlers.SetBackgroundColor   ||
        !ohandlers.SetForegroundColor   ||
        !ohandlers.ShowCursor)
    {
        bResult = FALSE;
    }

    // check that inputhandlers were installed
    if( !ihandlers.GetKeyPolled ||
        !ihandlers.FlushKeyboardQueue)
    {
        bResult = FALSE;
    }

    LEAVE_FUNC();

    bConsoleIsInitialized = bResult;

    return bResult;
}

//*************************************************************************
// ConsoleShutdown()
//
// exit terminal screen
//*************************************************************************
void ConsoleShutdown(void)
{
    ENTER_FUNC();

    // sleep for a few seconds
    KeStallExecutionProcessor(1000*5000);

	switch(eTerminalMode)
    {
        case TERMINAL_MODE_HERCULES_GRAPHICS:
            ConsoleShutdownHercules();
            break;
        case TERMINAL_MODE_HERCULES_TEXT:
            break;
        case TERMINAL_MODE_VGA_TEXT:
            ConsoleShutdownVga();
            break;
        case TERMINAL_MODE_SERIAL:
            ConsoleShutdownSerial();
            break;
        case TERMINAL_MODE_NONE:
        default:
            // fail
            break;
    }

    LEAVE_FUNC();
}

// EOF