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

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/*
 * Copyright notice...
 */
 
#include "ctwm.h"
 
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
 
#include "r_layout.h"
#include "r_area.h"
#include "xparsegeometry.h"
 
 
/**
 * Parse an X Geometry out to get the positions and sizes.
 *
 * This generally wraps and replaces our uses of XParseGeometry in order
 * to allow positioning relative to a XRANDR output name.  This allows
 * specifying a geometry relative to a particular monitor, rather than on
 * the whole composite multi-screen output meta-display.
 */
int
RLayoutXParseGeometry(RLayout *layout, const char *geometry, int *x, int *y,
                      unsigned int *width, unsigned int *height)
{
    char *sep;
 
    // Got something that looks like a display?
    sep = strchr(geometry, ':');
    if(sep != NULL) {
        RArea mon = RLayoutGetAreaByName(layout, geometry, sep - geometry);
        if(RAreaIsValid(&mon)) {
            // Yep, one of our monitors; figure the placement on our
            // whole root where that part of this monitor lies.
            int mask = XParseGeometry(sep + 1, x, y, width, height);
            RArea big = RLayoutBigArea(layout);
 
            if(mask & XValue) {
                if(mask & XNegative) {
                    *x -= big.width - mon.width - (mon.x - big.x);
                }
                else {
                    *x += mon.x - big.x;
                }
            }
 
            if(mask & YValue) {
                if(mask & YNegative) {
                    *y -= big.height - mon.height - (mon.y - big.y);
                }
                else {
                    *y += mon.y - big.y;
                }
            }
 
            return mask;
        }
 
        // Name not found, keep the geometry part as-is
        geometry = sep + 1;
    }
 
    return XParseGeometry(geometry, x, y, width, height);
}