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Outputting backspaces should only move the cursor. 

Text buffer copy is now always initialized correctly.
Preserve video memory flag is parsed and text screen is now really
cleared when flag is clear.
This commit is contained in:
Jukka Heinonen 2003-02-14 19:23:16 +00:00 committed by Alexandre Julliard
parent 7483aea5b1
commit 5812f52976
2 changed files with 36 additions and 14 deletions
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30
dlls/winedos/int10.c
View File

@ -90,6 +90,8 @@ static const INT10_MODE INT10_modelist[] =
{0xffff, 0, 0, 0}
};
static void INT10_SetCursorPos(BIOSDATA*, unsigned, unsigned, unsigned);
/**********************************************************************
* INT10_FindMode
@ -389,6 +391,7 @@ static void INT10_FillStateInformation( BYTE *buffer, BIOSDATA *data )
static BOOL INT10_SetVideoMode( BIOSDATA *data, WORD mode )
{
const INT10_MODE *ptr = INT10_FindMode( mode );
BOOL clearScreen = TRUE;
if (!ptr)
return FALSE;
@ -399,6 +402,12 @@ static BOOL INT10_SetVideoMode( BIOSDATA *data, WORD mode )
if (mode & 0x4000)
return FALSE;
/*
* Check for VGA and VESA preserve video memory flag.
*/
if ((mode & 0x0080) || (mode & 0x8000))
clearScreen = FALSE;
/*
* Note that we do not mask out flags here on purpose.
*
@ -412,21 +421,34 @@ static BOOL INT10_SetVideoMode( BIOSDATA *data, WORD mode )
if (ptr->Depth == 0)
{
/* Text mode. */
TRACE( "Setting %s %dx%d text mode\n",
TRACE( "Setting %s %dx%d text mode (screen %s)\n",
mode <= 0xff ? "VGA" : "VESA",
ptr->Width, ptr->Height );
ptr->Width, ptr->Height,
clearScreen ? "cleared" : "preserved" );
/*
* FIXME: We should check here if alpha mode could be set.
*/
VGA_SetAlphaMode( ptr->Width, ptr->Height );
data->VideoColumns = ptr->Width;
data->RowsOnScreenMinus1 = ptr->Height - 1;
if (clearScreen)
{
VGA_ClearText( 0, 0, ptr->Height-1, ptr->Width-1, 0x07 );
INT10_SetCursorPos( data, 0, 0, 0 );
VGA_SetCursorPos( 0, 0 );
}
}
else
{
/* Graphics mode. */
TRACE( "Setting %s %dx%dx%d graphics mode\n",
TRACE( "Setting %s %dx%dx%d graphics mode (screen %s)\n",
mode <= 0xff ? "VGA" : "VESA",
ptr->Width, ptr->Height, ptr->Depth );
ptr->Width, ptr->Height, ptr->Depth,
clearScreen ? "cleared" : "preserved" );
if (VGA_SetMode( ptr->Width, ptr->Height, ptr->Depth ))
return FALSE;
}

6
dlls/winedos/vga.c
View File

@ -608,7 +608,7 @@ void VGA_PrepareVideoMemCopy(unsigned Xres, unsigned Yres)
* actual text mode memory area to make sure the screen
* does get updated fully initially */
for (i=0; i < Xres*Yres*2; i++)
*p2++ ^= *p++; /* XOR it */
*p2++ = *p++ ^ 0xff; /* XOR it */
}
/**********************************************************************
@ -736,7 +736,7 @@ void VGA_PutChar(BYTE ascii)
switch(ascii) {
case '\b':
VGA_PutCharAt(vga_text_x, vga_text_y, ' ', vga_text_attr);
if (vga_text_x)
vga_text_x--;
break;
@ -789,7 +789,7 @@ void VGA_ClearText(unsigned row1, unsigned col1,
for(y=row1; y<=row2; y++)
for(x=col1; x<=col2; x++)
VGA_PutCharAt(x, y, ' ', attr);
VGA_PutCharAt(x, y, 0x20, attr);
LeaveCriticalSection(&vga_lock);
}