/usr/src/RPM/BUILD/ctwm-4.1.0/mwmhints.c

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/*
 * Copyright 2014 Olaf Seibert
 */
 
/*
 * Code to look at a few Motif Window Manager hints.
 *
 * Only the bits marked [v] are actually looked at.
 * For the rest, ctwm has no concept, really.
 *
 * For some information about the meaning of the flags, see
 * the manual page VendorShell(3) from the Motif library.
 */
 
#include "ctwm.h"
 
#include <stdio.h>
 
#include "ctwm_atoms.h"
#include "list.h"
#include "mwmhints.h"
#include "screen.h"
 
bool
GetMWMHints(Window w, MotifWmHints *mwmHints)
{
    int success;
    Atom actual_type;
    int actual_format;
    unsigned long nitems;
    unsigned long bytes_after;
    unsigned long *prop = NULL;
 
    /* Defaults for when not found */
    mwmHints->flags = 0;
    mwmHints->functions = 0;
    mwmHints->decorations = 0;
#ifdef FULL_MWM_DATA
    mwmHints->input_mode = 0;
    mwmHints->status = 0;
#endif
 
    success = XGetWindowProperty(
                      dpy, w, XA__MOTIF_WM_HINTS,
                      0, 5,           /* long_offset, long long_length, */
                      False,          /* Bool delete, */
                      AnyPropertyType,/* Atom req_type */
                      &actual_type,   /* Atom *actual_type_return, */
                      &actual_format, /* int *actual_format_return, */
                      &nitems,        /* unsigned long *nitems_return,  */
                      &bytes_after,   /* unsigned long * */
                      (unsigned char **)&prop);       /* unsigned char ** */
 
    if(success == Success &&
                    actual_type == XA__MOTIF_WM_HINTS &&
                    actual_format == 32 &&
                    nitems >= 3) {
        mwmHints->flags = (int)prop[0];
        mwmHints->functions = (int)prop[1];
        mwmHints->decorations = (int)prop[2];
#ifdef FULL_MWM_DATA
        mwmHints->input_mode = (int)prop[3];
        mwmHints->status = (int)prop[4];
#endif
 
        if(mwmHints->flags & MWM_HINTS_FUNCTIONS) {
            if(mwmHints->functions & MWM_FUNC_ALL) {
                mwmHints->functions ^= ~0;
            }
        }
        if(mwmHints->flags & MWM_HINTS_DECORATIONS) {
            if(mwmHints->decorations & MWM_DECOR_ALL) {
                mwmHints->decorations ^= ~0;
            }
        }
 
        success = true;
    }
    else {
        success = false;
    }
 
    if(prop != NULL) {
        XFree(prop);
    }
 
    return success;
}
 
 
 
/*
 * Simple test wrappers
 */
static bool
mwm_sets_decorations(MotifWmHints *hints)
{
    return (hints->flags & MWM_HINTS_DECORATIONS) ? true : false;
}
 
 
/* 1 = yes   0 = no   -1 = no opinion */
int
mwm_has_border(MotifWmHints *hints)
{
    /* No opinion if hints don't set decoration info */
    if(!mwm_sets_decorations(hints)) {
        return -1;
    }
 
    /* No opinion if the user told us to ignore it */
    if(LookInNameList(Scr->MWMIgnore, "DECOR_BORDER")) {
        return -1;
    }
 
    /* No border if hints said so */
    if((hints->decorations & MWM_DECOR_BORDER) == 0) {
        return 0;
    }
 
    /* Else border */
    return 1;
}
 
 
bool
mwm_sets_title(MotifWmHints *hints)
{
    /* Not if we don't have decoration info */
    if(!mwm_sets_decorations(hints)) {
        return false;
    }
 
    /* Not if the user wants to ignore title frobbing */
    if(LookInNameList(Scr->MWMIgnore, "DECOR_TITLE")) {
        return false;
    }
 
    /* Else we do have info to use */
    return true;
}
 
 
bool
mwm_has_title(MotifWmHints *hints)
{
    if(mwm_sets_decorations(hints)
                    && ((hints->decorations & MWM_DECOR_TITLE) == 0)) {
        return false;
    }
    return true;
}