Bool
fixedColors(ModeInfo * mi)
{
Bool temp;
#ifdef FORCEFIXEDCOLORS
/* pretending a fixed colourmap */
return TRUE;
#else
/* get information about the default visual */
temp = (!((MI_NPIXELS(mi) > 2) &&
(MI_VISUALCLASS(mi) != StaticGray) &&
(MI_VISUALCLASS(mi) != StaticColor) &&
(MI_VISUALCLASS(mi) != TrueColor) &&
#if 0
/*-
* This may fix wrong colors (possibly unreadable text) in password window
*/
!MI_IS_ICONIC(mi) &&
#endif
!MI_IS_INROOT(mi) &&
MI_IS_INSTALL(mi)));
#endif
if (debug) {
(void) printf("%s colors on screen %d\n", (temp) ? "fixed" : "writeable",
MI_SCREEN(mi));
}
return temp;
}
/* has_writeable was hacked out of xscreensaver and modified for xlockmore
* by Jouk Jansen <*****@*****.**>
*
* xscreensaver, Copyright (c) 1993, 1994, 1995, 1996, 1997, 1998
* by Jamie Zawinski <*****@*****.**>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*/
Bool
has_writable_cells(ModeInfo * mi)
{
switch (MI_VISUALCLASS(mi)) {
case GrayScale: /* Mappable grays. */
case PseudoColor: /* Mappable colors. */
case DirectColor: /* DirectColor visuals are like TrueColor, but have
three colormaps - one for each component of RGB. */
return True;
case StaticGray: /* Fixed grays. */
case TrueColor: /* Fixed colors. */
case StaticColor: /* (What's the difference again?) */
return False;
default:
abort();
}
return False;
}
Bool
setupColormap(ModeInfo * mi, int *colors, Bool * truecolor,
unsigned long *red_mask, unsigned long *blue_mask, unsigned long *green_mask)
{
/* how many colours are there altogether? */
*colors = MI_NPIXELS(mi);
if (*colors > MI_COLORMAP_SIZE(mi)) {
*colors = MI_COLORMAP_SIZE(mi);
}
if (*colors < 2)
*colors = 2;
*truecolor = (MI_VISUALCLASS(mi) == TrueColor);
*red_mask = MI_RED_MASK(mi);
*green_mask = MI_GREEN_MASK(mi);
*blue_mask = MI_BLUE_MASK(mi);
return !fixedColors(mi);
}
void
fixColormap(ModeInfo * mi, int ncolors, float saturation,
Bool mono, Bool install, Bool inroot, Bool inwindow, Bool verbose)
{
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
Screen *scr = MI_SCREENPTR(mi);
Colormap cmap = MI_COLORMAP(mi);
Colormap dcmap = DefaultColormapOfScreen(scr);
XColor xcolor;
unsigned char *red = (unsigned char *) NULL,
*green = (unsigned char *) NULL,
*blue = (unsigned char *) NULL;
int colorcount, i, fixed, visualclass;
#ifndef COMPLIANT_COLORMAP
Bool retry = False;
#endif
if (mono || CellsOfScreen(scr) <= 2) {
if (MI_PIXELS(mi))
return;
if ((MI_PIXELS(mi) = (unsigned long *) calloc(2,
sizeof (unsigned long))) == NULL) {
(void) fprintf(stderr, "could not get the 2 colors for mono\n");
}
monoColormap(scr, MI_SCREENINFO(mi), foreground, background);
return;
}
colorcount = ncolors;
if ((( red = (unsigned char *) calloc(ncolors,
sizeof (unsigned char))) == NULL) ||
((green = (unsigned char *) calloc(ncolors,
sizeof (unsigned char))) == NULL) ||
(( blue = (unsigned char *) calloc(ncolors,
sizeof (unsigned char))) == NULL)) {
(void) fprintf(stderr, "could not get the %d colors\n", ncolors);
if (red != NULL)
free(red);
if (green != NULL)
free(green);
return;
}
visualclass = MI_VISUALCLASS(mi);
fixed = (visualclass == StaticGray) || (visualclass == StaticColor) ||
(visualclass == TrueColor);
if (
#ifdef USE_DTSAVER
dtsaver || /* needs to be in focus without mouse */
#endif
inroot || (!install && !fixed) || cmap == None) {
cmap = dcmap;
}
if (cmap != dcmap && MI_PIXELS(mi)) {
XFreeColors(display, cmap, MI_PIXELS(mi), MI_NPIXELS(mi), 0);
#ifndef COMPLIANT_COLORMAP
XFreeColors(display, cmap, &(MI_BLACK_PIXEL(mi)), 1, 0);
XFreeColors(display, cmap, &(MI_WHITE_PIXEL(mi)), 1, 0);
#endif
XFreeColors(display, cmap, &(MI_BG_PIXEL(mi)), 1, 0);
XFreeColors(display, cmap, &(MI_FG_PIXEL(mi)), 1, 0);
}
/* else if (cmap) { (void) printf("cmap: this case is possible?\n"); } */
if (MI_PIXELS(mi))
free(MI_PIXELS(mi));
if ((MI_PIXELS(mi) = (unsigned long *) calloc(ncolors,
sizeof (unsigned long))) == NULL) {
(void) fprintf(stderr, "could not get the %d colors\n", ncolors);
}
/* "allocate" the black and white pixels, so that they
will be included by XCopyColormapAndFree() if it gets called */
#ifdef COMPLIANT_COLORMAP
MI_BLACK_PIXEL(mi) = BlackPixelOfScreen(scr);
MI_WHITE_PIXEL(mi) = WhitePixelOfScreen(scr);
#else
MI_BLACK_PIXEL(mi) = allocPixel(display, cmap, "Black", "Black");
MI_WHITE_PIXEL(mi) = allocPixel(display, cmap, "White", "White");
#endif
MI_BG_PIXEL(mi) = allocPixel(display, cmap, background, "White");
MI_FG_PIXEL(mi) = allocPixel(display, cmap, foreground, "Black");
hsbramp(0.0, saturation, 1.0, 1.0, saturation, 1.0, colorcount,
red, green, blue);
MI_NPIXELS(mi) = 0;
for (i = 0; i < colorcount; i++) {
xcolor.red = red[i] << 8;
xcolor.green = green[i] << 8;
xcolor.blue = blue[i] << 8;
xcolor.flags = DoRed | DoGreen | DoBlue;
if (!XAllocColor(display, cmap, &xcolor)) {
#ifdef COMPLIANT_COLORMAP
if (!install || cmap != dcmap)
break;
if ((cmap = XCopyColormapAndFree(display, cmap)) == dcmap)
break;
if (verbose)
(void) fprintf(stderr, "using private colormap\n");
if (!XAllocColor(display, cmap, &xcolor))
break;
#else
if (verbose)
(void) fprintf(stderr, "ran out of colors on colormap\n");
if ((saturation != 1.0 || ncolors != 64) && MI_NPIXELS(mi) < 2) {
if (verbose)
(void) fprintf(stderr,
"retrying with saturation = 1.0 and ncolors = 64\n");
retry = True;
}
break;
#endif
}
MI_PIXELS(mi)[i] = xcolor.pixel;
MI_NPIXELS(mi)++;
}
free(red);
free(green);
free(blue);
if (verbose)
(void) fprintf(stderr, "%d pixel%s allocated\n", MI_NPIXELS(mi),
(MI_NPIXELS(mi) == 1) ? "" : "s");
if (MI_NPIXELS(mi) <= 4) {
XFreeColors(display, cmap, MI_PIXELS(mi), MI_NPIXELS(mi), 0);
#ifndef COMPLIANT_COLORMAP
XFreeColors(display, cmap, &(MI_BLACK_PIXEL(mi)), 1, 0);
XFreeColors(display, cmap, &(MI_WHITE_PIXEL(mi) ), 1, 0);
#endif
XFreeColors(display, cmap, &(MI_BG_PIXEL(mi)), 1, 0);
XFreeColors(display, cmap, &(MI_FG_PIXEL(mi)), 1, 0);
#ifndef COMPLIANT_COLORMAP
if (retry) {
fixColormap(mi, 64, 1.0,
mono, install, inroot, inwindow, verbose);
return;
}
#endif
monoColormap(scr, MI_SCREENINFO(mi), foreground, background);
MI_COLORMAP(mi) = cmap = DefaultColormapOfScreen(scr);
return;
}
MI_COLORMAP(mi) = cmap;
if ((install || fixed) && !inroot && MI_NPIXELS(mi) > 2) {
#if 0
(void) XGetWindowAttributes(display, window, &xgwa);
if (cmap != xgwa.colormap)
#endif
#if 1 /* Turn off to simulate fvwm and tvwm */
setColormap(display, window, cmap, inwindow);
#endif
}
#if 0
else {
/* white and black colors may not be right for GL modes so lets set them */
MI_BLACK_PIXEL(mi) = BlackPixelOfScreen(scr);
MI_WHITE_PIXEL(mi) = WhitePixelOfScreen(scr);
/* foreground and background colors may not be right.... */
BlackPixelOfScreen(scr) = MI_BLACK_PIXEL(mi);
WhitePixelOfScreen(scr) = MI_WHITE_PIXEL(mi);
}
#endif
}