// [RH] Set an area to a specified color
void DCanvas::Clear (int left, int top, int right, int bottom, int color) const
{
int x, y;
if (is8bit())
{
byte *dest;
dest = buffer + top * pitch + left;
x = right - left;
for (y = top; y < bottom; y++)
{
memset (dest, color, x);
dest += pitch;
}
}
else
{
unsigned int *dest;
dest = (unsigned int *)(buffer + top * pitch + (left << 2));
right -= left;
for (y = top; y < bottom; y++)
{
for (x = 0; x < right; x++)
{
dest[x] = color;
}
dest += pitch >> 2;
}
}
}
static
void
fxputc(FILE *f, int ch)
{
/* drop any sign */
ch = ch&0xff;
/* on 7-bit terminals, strip high bit */
if (!is8bit()) ch &= 0x7f;
/*
* Assume anything that isn't a control character is printable.
* We can't count on locale stuff to tell us what's printable
* because we might be looking at someone who uses different
* locale settings or is on the other side of the planet. So,
* strip 0-31, 127, 128-159, and 255. Note that not stripping
* 128-159 is asking for trouble, as 155 (M-esc) is interpreted
* as esc-[ by most terminals. Hopefully this won't break anyone's
* charset.
*
* It would be nice if we could set the terminal to display in the
* right charset, but we have no way to know what it is. feh.
*/
if (((ch&0x7f) >= 32 && (ch&0x7f) != 0x7f) || ch=='\t') {
putc(ch, f);
return;
}
if (ch=='\n') {
if (send_crs) putc('\r', f);
putc('\n', f);
return;
}
if (ch&0x80) {
putc('M', f);
putc('-', f);
ch &= 0x7f;
}
putc('^', f);
if (ch==0x7f) putc('?', f);
else putc(ch+'@', f);
}
// [RH] Fill an area with a 64x64 flat texture
// right and bottom are one pixel *past* the boundaries they describe.
void DCanvas::FlatFill (int left, int top, int right, int bottom, const byte *src) const
{
int x, y;
int advance;
int width;
width = right - left;
right = width >> 6;
if (is8bit())
{
byte *dest;
advance = pitch - width;
dest = buffer + top * pitch + left;
for (y = top; y < bottom; y++)
{
for (x = 0; x < right; x++)
{
memcpy (dest, src + ((y&63)<<6), 64);
dest += 64;
}
if (width & 63)
{
memcpy (dest, src + ((y&63)<<6), width & 63);
dest += width & 63;
}
dest += advance;
}
}
else
{
unsigned int *dest;
int z;
const byte *l;
advance = (pitch - (width << 2)) >> 2;
dest = (unsigned int *)(buffer + top * pitch + (left << 2));
for (y = top; y < bottom; y++)
{
l = src + ((y&63)<<6);
for (x = 0; x < right; x++)
{
for (z = 0; z < 64; z += 4, dest += 4)
{
// Try and let the optimizer pair this on a Pentium
// (even though VC++ doesn't anyway)
dest[0] = V_Palette[l[z]];
dest[1] = V_Palette[l[z+1]];
dest[2] = V_Palette[l[z+2]];
dest[3] = V_Palette[l[z+3]];
}
}
if (width & 63)
{
// Do any odd pixel left over
if (width & 1)
*dest++ = V_Palette[l[0]];
// Do the rest of the pixels
for (z = 1; z < (width & 63); z += 2, dest += 2)
{
dest[0] = V_Palette[l[z]];
dest[1] = V_Palette[l[z+1]];
}
}
dest += advance;
}
}
}
