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Cleaned up.

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committer: mfx <mfx> 968681755 +0000
This commit is contained in:
Markus F.X.J. Oberhumer 2000-09-11 14:15:55 +00:00
parent de68513bfa
commit a0919d78f1
1 changed files with 42 additions and 33 deletions
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75
src/c_screen.cpp
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@ -188,99 +188,108 @@ static int set_fg(FILE *f, int fg)
static void print0(FILE *f, const char *ss)
{
int cx, cy;
int c_cx, c_cy;
int old_cx = 0, old_cy = 0;
const int sx = screen->getCols(screen);
const int sy = screen->getRows(screen);
int pass;
// Note:
// We use 2 passes to avoid unnecessary system calls because
// scrollScreen() under Win32 is *extremely* slow.
// scrollUp() under Win32 is *extremely* slow.
UNUSED(f);
screen->getCursor(screen,&cx,&cy);
c_cx = cx; c_cy = cy;
screen->getCursor(screen,&old_cx,&old_cy);
cx = old_cx; cy = old_cy;
for (pass = 0; pass < 2; pass++)
{
const char *s = ss;
// char buffer for pass == 1
// char buffer for pass 2
char p[256+1];
int pi = 0, px = -1, py = -1;
int pi = 0, px = 0, py = 0;
for (;;)
{
// walk over whitespace
for (;;)
{
if (*s == '\n')
{
c_cy++;
c_cx = 0;
cx = 0;
cy++;
}
else if (*s == '\r')
{
c_cx = 0;
if (pass > 0 && c_cy < sy)
screen->clearLine(screen,c_cy);
cx = 0;
if (pass > 0 && cy < sy)
screen->clearLine(screen,cy);
}
else
break;
s++;
}
if (c_cx >= sx)
// adjust cursor
if (cx >= sx)
{
c_cy++;
c_cx = 0;
cx = 0;
cy++;
}
if (pass > 0)
{
if (pi > 0 && (*s == 0 || py != c_cy))
// check if we should print something
if (pi > 0 && (*s == 0 || py != cy))
{
p[pi] = 0;
screen->putString(screen,p,px,py);
pi = 0;
}
if (c_cy >= sy)
// check if we should scroll even more (this can happen
// if the string is longer than sy lines)
if (cy >= sy)
{
int scroll_y = c_cy - sy + 1;
int scroll_y = cy - sy + 1;
screen->scrollUp(screen,scroll_y);
c_cy -= scroll_y;
if (c_cy < 0)
c_cy = 0;
cy -= scroll_y;
if (cy < 0)
cy = 0;
}
}
// done ?
if (*s == 0)
break;
if (pass > 0)
{
// store current char
if (pi == 0)
{
px = c_cx;
py = c_cy;
px = cx;
py = cy;
}
p[pi++] = *s;
}
c_cx++;
// advance
cx++;
s++;
}
if (pass == 0)
{
c_cx = cx;
if (c_cy >= sy)
// end of pass 1 - scroll up, restore cursor
if (cy >= sy)
{
int scroll_y = c_cy - sy + 1;
int scroll_y = cy - sy + 1;
screen->scrollUp(screen,scroll_y);
c_cy = cy - scroll_y;
if (c_cy < 0)
c_cy = 0;
cy = old_cy - scroll_y;
if (cy < 0)
cy = 0;
}
else
c_cy = cy;
cy = old_cy;
cx = old_cx;
}
}
screen->setCursor(screen,c_cx,c_cy);
screen->setCursor(screen,cx,cy);
screen->refresh(screen);
}