The-Homebrew-Cloud/vbagx
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6f267b8e86
vbagx/source/vba/Text.cpp
dborth 0a8af4c17e refactor
2008-09-15 00:33:15 +00:00

181 lines
14 KiB
C++
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/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2002 Ben Parnell
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Code originally from fceu/drawing.h file, adapted by Forgotten
*/
#include "System.h"
extern int RGB_LOW_BITS_MASK;
static const u8 fontdata2[2048] =
{
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};
static void drawTextInternal(u8 *screen, int pitch, int x, int y,
const char *string, bool trans)
{
screen += y*pitch;
int inc = 2;
switch(systemColorDepth)
{
case 24:
inc = 3;
break;
case 32:
inc = 4;
break;
}
screen += x*inc;
switch(systemColorDepth)
{
case 16:
{
while(*string)
{
char c = *string++;
u8 *scr = screen;
u16 mask = ~RGB_LOW_BITS_MASK;
int h, w;
u16 *s = (u16 *)scr;
for (h = 0; h < 8; h++)
{
for (w = 0; w < 8; w++, s++)
{
int on = (fontdata2[(c<<3)+h]>>w)&1;
if(trans)
{
if(on)
*s = ((0xf) << systemRedShift) +
((*s & mask) >>1);
}
else
{
if(on)
*s = (0x1f) << systemRedShift;
}
}
scr += pitch;
s = (u16 *)scr;
}
screen += inc*8;
}
}
break;
case 24:
{
while(*string)
{
char c = *string++;
u8 *scr = screen;
int h, w;
u8 *s = (u8 *)scr;
for (h = 0; h < 8; h++)
{
for (w = 0; w < 8; w++, s+=3)
{
int on = (fontdata2[(c<<3)+h]>>w)&1;
if(trans)
{
if(on)
{
u32 color = (0x1f) << systemRedShift;
*s = ((color & 255)>>1)+(*s>>1);
*(s+1) = (((color >> 8) & 255)>>1)+(*(s+1)>>1);
*(s+2) = (((color >> 16) & 255)>>1)+(*(s+2)>>1);
}
}
else
{
if(on)
{
u32 color = (0x1f) << systemRedShift;
*s = (color & 255);
*(s+1) = (color >> 8) & 255;
*(s+2) = (color >> 16) & 255;
}
}
}
scr += pitch;
s = (u8 *)scr;
}
screen += inc*8;
}
}
break;
case 32:
{
while(*string)
{
char c = *string++;
u8 *scr = screen;
int h, w;
u32 mask = 0xfefefe;
u32 *s = (u32 *)scr;
for (h = 0; h < 8; h++)
{
for (w = 0; w < 8; w++, s++)
{
int on = (fontdata2[(c<<3)+h]>>w)&1;
if(trans)
{
if(on)
*s = ((0xf) << systemRedShift) + ((*s & mask)>>1);
}
else
{
if(on)
*s = (0x1f) << systemRedShift;
}
}
scr += pitch;
s = (u32 *)scr;
}
screen += inc*8;
}
}
break;
}
}
void drawText(u8 *screen, int pitch, int x, int y, const char *string)
{
drawTextInternal(screen, pitch, x, y, string, false);
}
void drawTextTransp(u8 *screen, int pitch, int x, int y, const char *string)
{
drawTextInternal(screen, pitch, x, y, string, true);
}
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