#include "precomp.h"

Include dependency graph for console.c:

Functions
VOID NTAPI	VidResetDisplay (_In_ BOOLEAN SetMode)

ULONG NTAPI	VidSetTextColor (_In_ ULONG Color)

VOID NTAPI	VidSetScrollRegion (_In_ ULONG Left, _In_ ULONG Top, _In_ ULONG Right, _In_ ULONG Bottom)

VOID NTAPI	VidDisplayStringXY (_In_ PCSTR String, _In_ ULONG Left, _In_ ULONG Top, _In_ BOOLEAN Transparent)

VOID NTAPI	VidDisplayString (_In_ PCSTR String)

Variables
UCHAR	VidpTextColor = BV_COLOR_WHITE

ULONG	VidpCurrentX = 0

ULONG	VidpCurrentY = 0

URECT	VidpScrollRegion = {0, 0, SCREEN_WIDTH - 1, SCREEN_HEIGHT - 1}

static BOOLEAN	ClearRow = FALSE

Function Documentation

◆ VidDisplayString()

VOID NTAPI VidDisplayString ( _In_ PCSTR String )

Definition at line 98 of file console.c.

{
    /* Start looping the string */
    for (; *String; ++String)
    {
        /* Treat new-line separately */
        if (*String == '\n')
        {
            /* Modify Y position */
            VidpCurrentY += BOOTCHAR_HEIGHT + 1;
            if (VidpCurrentY + BOOTCHAR_HEIGHT > VidpScrollRegion.Bottom)
            {
                /* Scroll the view and clear the current row */
                DoScroll(BOOTCHAR_HEIGHT + 1);
                VidpCurrentY -= BOOTCHAR_HEIGHT + 1;
                PreserveRow(VidpCurrentY, BOOTCHAR_HEIGHT + 1, TRUE);
            }
            else
            {
                /* Preserve the current row */
                PreserveRow(VidpCurrentY, BOOTCHAR_HEIGHT + 1, FALSE);
            }
 
            /* Update current X */
            VidpCurrentX = VidpScrollRegion.Left;
 
            /* No need to clear this row */
            ClearRow = FALSE;
        }
        else if (*String == '\r')
        {
            /* Update current X */
            VidpCurrentX = VidpScrollRegion.Left;
 
            /* If a new-line does not follow we will clear the current row */
            if (String[1] != '\n')
                ClearRow = TRUE;
        }
        else
        {
            /* Clear the current row if we had a return-carriage without a new-line */
            if (ClearRow)
            {
                PreserveRow(VidpCurrentY, BOOTCHAR_HEIGHT + 1, TRUE);
                ClearRow = FALSE;
            }
 
            /* Display this character */
            DisplayCharacter(*String, VidpCurrentX, VidpCurrentY, VidpTextColor, BV_COLOR_NONE);
            VidpCurrentX += BOOTCHAR_WIDTH;
 
            /* Check if we should scroll */
            if (VidpCurrentX + BOOTCHAR_WIDTH - 1 > VidpScrollRegion.Right)
            {
                /* Update Y position and check if we should scroll it */
                VidpCurrentY += BOOTCHAR_HEIGHT + 1;
                if (VidpCurrentY + BOOTCHAR_HEIGHT > VidpScrollRegion.Bottom)
                {
                    /* Scroll the view and clear the current row */
                    DoScroll(BOOTCHAR_HEIGHT + 1);
                    VidpCurrentY -= BOOTCHAR_HEIGHT + 1;
                    PreserveRow(VidpCurrentY, BOOTCHAR_HEIGHT + 1, TRUE);
                }
                else
                {
                    /* Preserve the current row */
                    PreserveRow(VidpCurrentY, BOOTCHAR_HEIGHT + 1, FALSE);
                }
 
                /* Update current X */
                VidpCurrentX = VidpScrollRegion.Left;
            }
        }
    }
}

Referenced by InbvDisplayString().

◆ VidDisplayStringXY()

VOID NTAPI VidDisplayStringXY	(	_In_ PCSTR	String,
		_In_ ULONG	Left,
		_In_ ULONG	Top,
		_In_ BOOLEAN	Transparent
	)

Definition at line 74 of file console.c.

{
    ULONG BackColor;
 
    /*
     * If the caller wanted transparent, then send the special value (16),
     * else use our default and call the helper routine.
     */
    BackColor = Transparent ? BV_COLOR_NONE : BV_COLOR_LIGHT_CYAN;
 
    /* Loop every character and adjust the position */
    for (; *String; ++String, Left += BOOTCHAR_WIDTH)
    {
        /* Display a character */
        DisplayCharacter(*String, Left, Top, BV_COLOR_LIGHT_BLUE, BackColor);
    }
}

◆ VidResetDisplay()

VOID NTAPI VidResetDisplay ( _In_ BOOLEAN SetMode )

Definition at line 25 of file console.c.

{
    /* Clear the current position */
    VidpCurrentX = 0;
    VidpCurrentY = 0;
 
    /* Invoke the hardware-specific routine */
    ResetDisplay(SetMode);
}

Referenced by InbvResetDisplay(), and VidInitialize().

◆ VidSetScrollRegion()

VOID NTAPI VidSetScrollRegion	(	_In_ ULONG	Left,
		_In_ ULONG	Top,
		_In_ ULONG	Right,
		_In_ ULONG	Bottom
	)

Definition at line 51 of file console.c.

{
    /* Assert alignment */
    ASSERT((Left % BOOTCHAR_WIDTH) == 0);
    ASSERT((Right % BOOTCHAR_WIDTH) == BOOTCHAR_WIDTH - 1);
 
    /* Set the scroll region */
    VidpScrollRegion.Left = Left;
    VidpScrollRegion.Top  = Top;
    VidpScrollRegion.Right  = Right;
    VidpScrollRegion.Bottom = Bottom;
 
    /* Set the current X and Y */
    VidpCurrentX = Left;
    VidpCurrentY = Top;
}

Referenced by InbvSetScrollRegion().

◆ VidSetTextColor()

ULONG NTAPI VidSetTextColor ( _In_ ULONG Color )

Definition at line 38 of file console.c.

{
    ULONG OldColor;
 
    /* Save the old color and set the new one */
    OldColor = VidpTextColor;
    VidpTextColor = Color;
    return OldColor;
}