/*
* Initialize graphics and open a window for the viewer
*/
Bool
CreateXWindow(void)
{
int fd;
GR_SIZE w, h;
GR_SCREEN_INFO si;
if ((fd = GrOpen()) < 0)
return(False);
nx_dpy.fd = fd;
dpy = &nx_dpy;
GrGetScreenInfo(&si);
/* pass screen details to RFB handler */
myFormat.bitsPerPixel = si.bpp;
myFormat.depth = si.bpp; /* is this right? */
myFormat.bigEndian = 0; /* how do I find this out? */
myFormat.trueColour = (myFormat.depth == 8 && !useBGR233) ? 0 : 1;
if (myFormat.trueColour) {
myFormat.redMax = myFormat.greenMax = 7;
myFormat.blueMax = 3;
myFormat.redShift = 0;
myFormat.greenShift = 3;
myFormat.blueShift = 6;
}
pixtype = si.pixtype;
/* get the initial server palette */
GrGetSystemPalette(&srv_pal);
#if 0
/* DEBUG */
for (i = 0; i < srv_pal.count; i++) {
printf("0x%02x %03d %03d %03d\n", i, \
srv_pal.palette[i].r, srv_pal.palette[i].g, \
srv_pal.palette[i].b );
}
#endif
/* create the top-level window */
w = (VW_WIDTH > (si.cols - VW_X)) ? (si.cols - VW_X) : VW_WIDTH;
h = (VW_HEIGHT > (si.rows - VW_Y)) ? (si.rows - VW_Y) : VW_HEIGHT;
if ((wid = GrNewWindow(GR_ROOT_WINDOW_ID, VW_X, VW_Y, w, h,
2, LTGRAY, BLACK)) == 0) {
fprintf(stderr, "Unable to create top-level window\n");
GrClose();
return False;
}
/* select events to receive */
GrSelectEvents(wid, GR_EVENT_MASK_BUTTON_DOWN |
GR_EVENT_MASK_BUTTON_UP | GR_EVENT_MASK_KEY_DOWN |
GR_EVENT_MASK_KEY_UP | GR_EVENT_MASK_MOUSE_POSITION);
/* make thw window visible */
GrMapWindow(wid);
canvas = wid;
/* create the graphics contexts */
gc = GrNewGC();
srcGC = GrNewGC();
dstGC = GrNewGC();
return True;
}
static void
GrGetSystemPaletteWrapper(void *r)
{
GR_PALETTE pal;
GrGetSystemPalette(&pal);
GsWriteType(current_fd,GrNumGetSystemPalette);
GsWrite(current_fd, &pal, sizeof(pal));
}
Colormap DefaultColormapOfScreen(Screen* screen)
{
if (!s_globalColormap)
{
s_globalColormap = (GR_PALETTE*) malloc(sizeof(GR_PALETTE));
GrGetSystemPalette(s_globalColormap);
}
return s_globalColormap;
}
