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diff --git a/nx-X11/lib/Xmu/CrCmap.c b/nx-X11/lib/Xmu/CrCmap.c
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-/* $Xorg: CrCmap.c,v 1.4 2001/02/09 02:03:51 xorgcvs Exp $ */
-
-/*
-
-Copyright 1989, 1998 The Open Group
-
-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.
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-*/
-/* $XFree86: xc/lib/Xmu/CrCmap.c,v 3.6 2001/01/17 19:42:53 dawes Exp $ */
-
-/*
- * Author: Donna Converse, MIT X Consortium
- */
-
-/*
- * CreateCmap.c - given a standard colormap description, make the map.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include <stdlib.h>
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-#include <X11/Xmu/StdCmap.h>
-
-/*
- * Prototypes
- */
-/* allocate entire map Read Only */
-static int ROmap(Display*, Colormap, unsigned long[], int, int);
-
-/* allocate a cell, prefer Read Only */
-static Status ROorRWcell(Display*, Colormap, unsigned long[], int,
- XColor*, unsigned long);
-
-/* allocate a cell Read Write */
-static Status RWcell(Display*, Colormap, XColor*, XColor*, unsigned long*);
-
-/* for quicksort */
-static int compare(_Xconst void*, _Xconst void*);
-
-/* find contiguous sequence of cells */
-static Status contiguous(unsigned long[], int, int, unsigned long, int*, int*);
-
-/* frees resources before quitting */
-static void free_cells(Display*, Colormap, unsigned long[], int, int);
-
-/* create a map in a RO visual type */
-static Status readonly_map(Display*, XVisualInfo*, XStandardColormap*);
-
-/* create a map in a RW visual type */
-static Status readwrite_map(Display*, XVisualInfo*, XStandardColormap*);
-
-#define lowbit(x) ((x) & (~(x) + 1))
-#define TRUEMATCH(mult,max,mask) \
- (colormap->max * colormap->mult <= vinfo->mask && \
- lowbit(vinfo->mask) == colormap->mult)
-
-/*
- * To create any one colormap which is described by an XStandardColormap
- * structure, use XmuCreateColormap().
- *
- * Return 0 on failure, non-zero on success.
- * Resources created by this function are not made permanent.
- * No argument error checking is provided. Use at your own risk.
- *
- * All colormaps are created with read only allocations, with the exception
- * of read only allocations of colors in the default map or otherwise
- * which fail to return the expected pixel value, and these are individually
- * defined as read/write allocations. This is done so that all the cells
- * defined in the default map are contiguous, for use in image processing.
- * This typically happens with White and Black in the default map.
- *
- * Colormaps of static visuals are considered to be successfully created if
- * the map of the static visual matches the definition given in the
- * standard colormap structure.
- */
-
-Status
-XmuCreateColormap(Display *dpy, XStandardColormap *colormap)
- /* dpy - specifies the connection under which the map is created
- * colormap - specifies the map to be created, and returns, particularly
- * if the map is created as a subset of the default colormap
- * of the screen, the base_pixel of the map.
- */
-{
- XVisualInfo vinfo_template; /* template visual information */
- XVisualInfo *vinfo; /* matching visual information */
- XVisualInfo *vpointer; /* for freeing the entire list */
- long vinfo_mask; /* specifies the visual mask value */
- int n; /* number of matching visuals */
- int status;
-
- vinfo_template.visualid = colormap->visualid;
- vinfo_mask = VisualIDMask;
- if ((vinfo = XGetVisualInfo(dpy, vinfo_mask, &vinfo_template, &n)) == NULL)
- return 0;
-
- /* A visual id may be valid on multiple screens. Also, there may
- * be multiple visuals with identical visual ids at different depths.
- * If the colormap is the Default Colormap, use the Default Visual.
- * Otherwise, arbitrarily, use the deepest visual.
- */
- vpointer = vinfo;
- if (n > 1)
- {
- register int i;
- register int screen_number;
- Bool def_cmap;
-
- def_cmap = False;
- for (screen_number = ScreenCount(dpy); --screen_number >= 0; )
- if (colormap->colormap == DefaultColormap(dpy, screen_number)) {
- def_cmap = True;
- break;
- }
-
- if (def_cmap) {
- for (i=0; i < n; i++, vinfo++) {
- if (vinfo->visual == DefaultVisual(dpy, screen_number))
- break;
- }
- } else {
- int maxdepth = 0;
- XVisualInfo *v = NULL;
-
- for (i=0; i < n; i++, vinfo++)
- if (vinfo->depth > maxdepth) {
- maxdepth = vinfo->depth;
- v = vinfo;
- }
- vinfo = v;
- }
- }
-
- if (vinfo->class == PseudoColor || vinfo->class == DirectColor ||
- vinfo->class == GrayScale)
- status = readwrite_map(dpy, vinfo, colormap);
- else if (vinfo->class == TrueColor)
- status = TRUEMATCH(red_mult, red_max, red_mask) &&
- TRUEMATCH(green_mult, green_max, green_mask) &&
- TRUEMATCH(blue_mult, blue_max, blue_mask);
- else
- status = readonly_map(dpy, vinfo, colormap);
-
- XFree((char *) vpointer);
- return status;
-}
-
-/****************************************************************************/
-static Status
-readwrite_map(Display *dpy, XVisualInfo *vinfo, XStandardColormap *colormap)
-{
- register unsigned long i, n; /* index counters */
- unsigned long ncolors; /* number of colors to be defined */
- int npixels; /* number of pixels allocated R/W */
- int first_index; /* first index of pixels to use */
- int remainder; /* first index of remainder */
- XColor color; /* the definition of a color */
- unsigned long *pixels; /* array of colormap pixels */
- unsigned long delta;
-
-
- /* Determine ncolors, the number of colors to be defined.
- * Insure that 1 < ncolors <= the colormap size.
- */
- if (vinfo->class == DirectColor) {
- ncolors = colormap->red_max;
- if (colormap->green_max > ncolors)
- ncolors = colormap->green_max;
- if (colormap->blue_max > ncolors)
- ncolors = colormap->blue_max;
- ncolors++;
- delta = lowbit(vinfo->red_mask) +
- lowbit(vinfo->green_mask) +
- lowbit(vinfo->blue_mask);
- } else {
- ncolors = colormap->red_max * colormap->red_mult +
- colormap->green_max * colormap->green_mult +
- colormap->blue_max * colormap->blue_mult + 1;
- delta = 1;
- }
- if (ncolors <= 1 || (int) ncolors > vinfo->colormap_size) return 0;
-
- /* Allocate Read/Write as much of the colormap as we can possibly get.
- * Then insure that the pixels we were allocated are given in
- * monotonically increasing order, using a quicksort. Next, insure
- * that our allocation includes a subset of contiguous pixels at least
- * as long as the number of colors to be defined. Now we know that
- * these conditions are met:
- * 1) There are no free cells in the colormap.
- * 2) We have a contiguous sequence of pixels, monotonically
- * increasing, of length >= the number of colors requested.
- *
- * One cell at a time, we will free, compute the next color value,
- * then allocate read only. This takes a long time.
- * This is done to insure that cells are allocated read only in the
- * contiguous order which we prefer. If the server has a choice of
- * cells to grant to an allocation request, the server may give us any
- * cell, so that is why we do these slow gymnastics.
- */
-
- if ((pixels = (unsigned long *) calloc((unsigned) vinfo->colormap_size,
- sizeof(unsigned long))) == NULL)
- return 0;
-
- if ((npixels = ROmap(dpy, colormap->colormap, pixels,
- vinfo->colormap_size, ncolors)) == 0) {
- free((char *) pixels);
- return 0;
- }
-
- qsort((char *) pixels, npixels, sizeof(unsigned long), compare);
-
- if (!contiguous(pixels, npixels, ncolors, delta, &first_index, &remainder))
- {
- /* can't find enough contiguous cells, give up */
- XFreeColors(dpy, colormap->colormap, pixels, npixels,
- (unsigned long) 0);
- free((char *) pixels);
- return 0;
- }
- colormap->base_pixel = pixels[first_index];
-
- /* construct a gray map */
- if (colormap->red_mult == 1 && colormap->green_mult == 1 &&
- colormap->blue_mult == 1)
- for (n=colormap->base_pixel, i=0; i < ncolors; i++, n += delta)
- {
- color.pixel = n;
- color.blue = color.green = color.red =
- (unsigned short) ((i * 65535) / (colormap->red_max +
- colormap->green_max +
- colormap->blue_max));
-
- if (! ROorRWcell(dpy, colormap->colormap, pixels, npixels, &color,
- first_index + i))
- return 0;
- }
-
- /* construct a red ramp map */
- else if (colormap->green_max == 0 && colormap->blue_max == 0)
- for (n=colormap->base_pixel, i=0; i < ncolors; i++, n += delta)
- {
- color.pixel = n;
- color.red = (unsigned short) ((i * 65535) / colormap->red_max);
- color.green = color.blue = 0;
-
- if (! ROorRWcell(dpy, colormap->colormap, pixels, npixels, &color,
- first_index + i))
- return 0;
- }
-
- /* construct a green ramp map */
- else if (colormap->red_max == 0 && colormap->blue_max == 0)
- for (n=colormap->base_pixel, i=0; i < ncolors; i++, n += delta)
- {
- color.pixel = n;
- color.green = (unsigned short) ((i * 65535) / colormap->green_max);
- color.red = color.blue = 0;
-
- if (! ROorRWcell(dpy, colormap->colormap, pixels, npixels, &color,
- first_index + i))
- return 0;
- }
-
- /* construct a blue ramp map */
- else if (colormap->red_max == 0 && colormap->green_max == 0)
- for (n=colormap->base_pixel, i=0; i < ncolors; i++, n += delta)
- {
- color.pixel = n;
- color.blue = (unsigned short) ((i * 65535) / colormap->blue_max);
- color.red = color.green = 0;
-
- if (! ROorRWcell(dpy, colormap->colormap, pixels, npixels, &color,
- first_index + i))
- return 0;
- }
-
- /* construct a standard red green blue cube map */
- else
- {
-#define calc(max,mult) (((n / colormap->mult) % \
- (colormap->max + 1)) * 65535) / colormap->max
-
- for (n=0, i=0; i < ncolors; i++, n += delta)
- {
- color.pixel = n + colormap->base_pixel;
- color.red = calc(red_max, red_mult);
- color.green = calc(green_max, green_mult);
- color.blue = calc(blue_max, blue_mult);
- if (! ROorRWcell(dpy, colormap->colormap, pixels, npixels, &color,
- first_index + i))
- return 0;
- }
-#undef calc
- }
- /* We have a read-only map defined. Now free unused cells,
- * first those occuring before the contiguous sequence begins,
- * then any following the contiguous sequence.
- */
-
- if (first_index)
- XFreeColors(dpy, colormap->colormap, pixels, first_index,
- (unsigned long) 0);
- if (remainder)
- XFreeColors(dpy, colormap->colormap,
- &(pixels[first_index + ncolors]), remainder,
- (unsigned long) 0);
-
- free((char *) pixels);
- return 1;
-}
-
-
-/****************************************************************************/
-static int
-ROmap(Display *dpy, Colormap cmap, unsigned long pixels[], int m, int n)
- /*
- * dpy - the X server connection
- * cmap - specifies colormap ID
- * pixels - returns pixel allocations
- * m - specifies colormap size
- * n - specifies number of colors
- */
-{
- register int p;
-
- /* first try to allocate the entire colormap */
- if (XAllocColorCells(dpy, cmap, 1, (unsigned long *) NULL,
- (unsigned) 0, pixels, (unsigned) m))
- return m;
-
- /* Allocate all available cells in the colormap, using a binary
- * algorithm to discover how many cells we can allocate in the colormap.
- */
- m--;
- while (n <= m) {
- p = n + ((m - n + 1) / 2);
- if (XAllocColorCells(dpy, cmap, 1, (unsigned long *) NULL,
- (unsigned) 0, pixels, (unsigned) p)) {
- if (p == m)
- return p;
- else {
- XFreeColors(dpy, cmap, pixels, p, (unsigned long) 0);
- n = p;
- }
- }
- else
- m = p - 1;
- }
- return 0;
-}
-
-
-/****************************************************************************/
-static Status
-contiguous(unsigned long pixels[], int npixels, int ncolors,
- unsigned long delta, int *first, int *rem)
- /* pixels - specifies allocated pixels
- * npixels - specifies count of alloc'd pixels
- * ncolors - specifies needed sequence length
- * delta - between pixels
- * first - returns first index of sequence
- * rem - returns first index after sequence, or 0, if none follow
- */
-{
- register int i = 1; /* walking index into the pixel array */
- register int count = 1; /* length of sequence discovered so far */
-
- *first = 0;
- if (npixels == ncolors) {
- *rem = 0;
- return 1;
- }
- *rem = npixels - 1;
- while (count < ncolors && ncolors - count <= *rem)
- {
- if (pixels[i-1] + delta == pixels[i])
- count++;
- else {
- count = 1;
- *first = i;
- }
- i++;
- (*rem)--;
- }
- if (count != ncolors)
- return 0;
- return 1;
-}
-
-
-/****************************************************************************/
-static Status
-ROorRWcell(Display *dpy, Colormap cmap, unsigned long pixels[],
- int npixels, XColor *color, unsigned long p)
-{
- unsigned long pixel;
- XColor request;
-
- /* Free the read/write allocation of one cell in the colormap.
- * Request a read only allocation of one cell in the colormap.
- * If the read only allocation cannot be granted, give up, because
- * there must be no free cells in the colormap.
- * If the read only allocation is granted, but gives us a cell which
- * is not the one that we just freed, it is probably the case that
- * we are trying allocate White or Black or some other color which
- * already has a read-only allocation in the map. So we try to
- * allocate the previously freed cell with a read/write allocation,
- * because we want contiguous cells for image processing algorithms.
- */
-
- pixel = color->pixel;
- request.red = color->red;
- request.green = color->green;
- request.blue = color->blue;
-
- XFreeColors(dpy, cmap, &pixel, 1, (unsigned long) 0);
- if (! XAllocColor(dpy, cmap, color)
- || (color->pixel != pixel &&
- (!RWcell(dpy, cmap, color, &request, &pixel))))
- {
- free_cells(dpy, cmap, pixels, npixels, (int)p);
- return 0;
- }
- return 1;
-}
-
-
-/****************************************************************************/
-static void
-free_cells(Display *dpy, Colormap cmap, unsigned long pixels[],
- int npixels, int p)
- /*
- * pixels - to be freed
- * npixels - original number allocated
- */
-{
- /* One of the npixels allocated has already been freed.
- * p is the index of the freed pixel.
- * First free the pixels preceeding p, and there are p of them;
- * then free the pixels following p, there are npixels - p - 1 of them.
- */
- XFreeColors(dpy, cmap, pixels, p, (unsigned long) 0);
- XFreeColors(dpy, cmap, &(pixels[p+1]), npixels - p - 1, (unsigned long) 0);
- free((char *) pixels);
-}
-
-
-/****************************************************************************/
-static Status
-RWcell(Display *dpy, Colormap cmap, XColor *color, XColor *request,
- unsigned long *pixel)
-{
- unsigned long n = *pixel;
-
- XFreeColors(dpy, cmap, &(color->pixel), 1, (unsigned long)0);
- if (! XAllocColorCells(dpy, cmap, (Bool) 0, (unsigned long *) NULL,
- (unsigned) 0, pixel, (unsigned) 1))
- return 0;
- if (*pixel != n)
- {
- XFreeColors(dpy, cmap, pixel, 1, (unsigned long) 0);
- return 0;
- }
- color->pixel = *pixel;
- color->flags = DoRed | DoGreen | DoBlue;
- color->red = request->red;
- color->green = request->green;
- color->blue = request->blue;
- XStoreColors(dpy, cmap, color, 1);
- return 1;
-}
-
-
-/****************************************************************************/
-static int
-compare(_Xconst void *e1, _Xconst void *e2)
-{
- return ((int)(*(long *)e1 - *(long *)e2));
-}
-
-
-/****************************************************************************/
-static Status
-readonly_map(Display *dpy, XVisualInfo *vinfo, XStandardColormap *colormap)
-{
- int i, last_pixel;
- XColor color;
-
- last_pixel = (colormap->red_max + 1) * (colormap->green_max + 1) *
- (colormap->blue_max + 1) + colormap->base_pixel - 1;
-
- for(i=colormap->base_pixel; i <= last_pixel; i++) {
-
- color.pixel = (unsigned long) i;
- color.red = (unsigned short)
- (((i/colormap->red_mult) * 65535) / colormap->red_max);
-
- if (vinfo->class == StaticColor) {
- color.green = (unsigned short)
- ((((i/colormap->green_mult) % (colormap->green_max + 1)) *
- 65535) / colormap->green_max);
- color.blue = (unsigned short)
- (((i%colormap->green_mult) * 65535) / colormap->blue_max);
- }
- else /* vinfo->class == GrayScale, old style allocation XXX */
- color.green = color.blue = color.red;
-
- XAllocColor(dpy, colormap->colormap, &color);
- if (color.pixel != (unsigned long) i)
- return 0;
- }
- return 1;
-}
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