VisCmap.c File Reference

#include <stdio.h>
#include <math.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#include <X11/Xmu/StdCmap.h>

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Functions
Status	XmuVisualStandardColormaps (Display *dpy, int screen, VisualID visualid, unsigned int depth, Bool replace, Bool retain)

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Function Documentation

Status XmuVisualStandardColormaps	(	Display *	dpy,
		int	screen,
		VisualID	visualid,
		unsigned int	depth,
		Bool	replace,
		Bool	retain
	)

Definition at line 72 of file VisCmap.c.

References n, NULL, XmuDeleteStandardColormap(), and XmuLookupStandardColormap().

Referenced by XmuAllStandardColormaps().

{
    Status              status;
    int                 n;
    long                vinfo_mask;
    XVisualInfo         vinfo_template, *vinfo;

    status = 0;
    vinfo_template.screen = screen;
    vinfo_template.visualid = visualid;
    vinfo_template.depth = depth;
    vinfo_mask = VisualScreenMask | VisualIDMask | VisualDepthMask;
    if ((vinfo = XGetVisualInfo(dpy, vinfo_mask, &vinfo_template, &n)) == NULL)
        return 0;

    if (vinfo->colormap_size <= 2) {
        /* Monochrome visuals have no standard maps; considered successful */
        XFree((char *) vinfo);
        return 1;
    }

    switch (vinfo->class)
    {
      case PseudoColor:
      case DirectColor:
        status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
                                           XA_RGB_DEFAULT_MAP, replace,retain);
        if (!status) break;

        status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
                                           XA_RGB_GRAY_MAP, replace, retain);
        if (!status) {
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
            break;
        }

        status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
                                           XA_RGB_RED_MAP, replace, retain);
        if (!status) {
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_GRAY_MAP);
            break;
        }

        status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
                                           XA_RGB_GREEN_MAP, replace, retain);
        if (!status) {
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_GRAY_MAP);
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_RED_MAP);
            break;
        }

        status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
                                           XA_RGB_BLUE_MAP, replace, retain);
        if (!status) {
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_GRAY_MAP);
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_RED_MAP);
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_GREEN_MAP);
            break;
        }
        /* fall through */

      case StaticColor:
      case TrueColor:

        status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
                                           XA_RGB_BEST_MAP, replace, retain);
        if (!status && (vinfo->class == PseudoColor || 
                        vinfo->class == DirectColor)) {
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_GRAY_MAP);
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_RED_MAP);
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_GREEN_MAP);
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_BLUE_MAP);
        }
        break;
        /* the end for PseudoColor, DirectColor, StaticColor, and TrueColor */

      case GrayScale:
        status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
                                           XA_RGB_DEFAULT_MAP, replace,
                                           retain);
        if (! status) break;
        /*FALLTHROUGH*/

      case StaticGray:

        status = XmuLookupStandardColormap(dpy, screen, visualid, depth,
                                           XA_RGB_GRAY_MAP, replace, retain);
        if (! status && vinfo->class == GrayScale) {
            XmuDeleteStandardColormap(dpy, screen, XA_RGB_DEFAULT_MAP);
            break;
        }
    }

    XFree((char *) vinfo);
    return status;
}

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