int LineTo_16bpp(HGDI_DC hdc, int nXEnd, int nYEnd)
{
pLineTo_16bpp _LineTo;
int rop2 = gdi_GetROP2(hdc) - 1;
_LineTo = LineTo_ROP2_16bpp[rop2];
if (_LineTo != NULL)
return _LineTo(hdc, nXEnd, nYEnd);
else
return 0;
}
BOOL LineTo_16bpp(HGDI_DC hdc, int nXEnd, int nYEnd)
{
pLineTo_16bpp _LineTo;
int rop2 = gdi_GetROP2(hdc) - 1;
_LineTo = LineTo_ROP2_16bpp[rop2];
if (_LineTo == NULL)
return FALSE;
return _LineTo(hdc, nXEnd, nYEnd);
}
int LineTo_32bpp(HGDI_DC hdc, int nXEnd, int nYEnd)
{
int x, y;
int x1, y1;
int x2, y2;
int e, e2;
int dx, dy;
int sx, sy;
HGDI_BITMAP bmp;
int bx1, by1;
int bx2, by2;
int irop2;
uint32 pen;
uint32 *pixel;
x1 = hdc->pen->posX;
y1 = hdc->pen->posY;
x2 = nXEnd;
y2 = nYEnd;
dx = (x1 > x2) ? x1 - x2 : x2 - x1;
dy = (y1 > y2) ? y1 - y2 : y2 - y1;
sx = (x1 < x2) ? 1 : -1;
sy = (y1 < y2) ? 1 : -1;
e = dx - dy;
x = x1;
y = y1;
irop2 = gdi_GetROP2(hdc) - 1;
bmp = (HGDI_BITMAP) hdc->selectedObject;
if (hdc->clip->null)
{
bx1 = (x1 < x2) ? x1 : x2;
by1 = (y1 < y2) ? y1 : y2;
bx2 = (x1 > x2) ? x1 : x2;
by2 = (y1 > y2) ? y1 : y2;
}
else
{
bx1 = hdc->clip->x;
by1 = hdc->clip->y;
bx2 = bx1 + hdc->clip->w - 1;
by2 = by1 + hdc->clip->h - 1;
}
pen = gdi_GetPenColor_32bpp(hdc->pen);
while (1)
{
if (!(x == x2 && y == y2))
{
if ((x >= bx1 && x <= bx2) && (y >= by1 && y <= by2))
{
pixel = gdi_GetPointer_32bpp(bmp, x, y);
SetPixel32_ROP2_[irop2](pixel, &pen);
}
}
else
{
break;
}
e2 = 2 * e;
if (e2 > -dy)
{
e -= dy;
x += sx;
}
if (e2 < dx)
{
e += dx;
y += sy;
}
}
return 1;
}