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

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/*
 *       Copyright 1988 by Evans & Sutherland Computer Corporation,
 *                          Salt Lake City, Utah
 *  Portions Copyright 1989 by the Massachusetts Institute of Technology
 *                        Cambridge, Massachusetts
 *
 * Copyright 1992 Claude Lecommandeur.
 */
 
/**********************************************************************
 *
 * $XConsortium: gc.c,v 1.22 91/01/09 17:13:12 rws Exp $
 *
 * Open the fonts and create the GCs
 *
 * 31-Mar-88 Tom LaStrange        Initial Version.
 *
 * Do the necessary modification to be integrated in ctwm.
 * Can no longer be used for the standard twm.
 *
 * 22-April-92 Claude Lecommandeur.
 *
 *
 **********************************************************************/
 
#include "ctwm.h"
 
#include <stdio.h>
 
#include "gram.tab.h"
#include "screen.h"
#include "gc.h"
 
/***********************************************************************
 *
 *  Procedure:
 *      CreateGCs - open fonts and create all the needed GC's.  I only
 *                  want to do this once, hence the first_time flag.
 *
 ***********************************************************************
 */
 
void CreateGCs(void)
{
    static ScreenInfo *prevScr = NULL;
    XGCValues       gcv;
    unsigned long   gcm;
    static unsigned char greypattern [] = {0x0f, 0x05, 0x0f, 0x0a};
    Pixmap        greypixmap;
    static char dashlist [2] = {1, 1};
 
    if(!Scr->FirstTime || prevScr == Scr) {
        return;
    }
 
    prevScr = Scr;
 
    /* create GC's */
 
    gcm = 0;
    gcm |= GCFunction;
    gcv.function = GXxor;
    gcm |= GCLineWidth;
    gcv.line_width = 0;
    gcm |= GCForeground;
    gcv.foreground = Scr->XORvalue;
    gcm |= GCSubwindowMode;
    gcv.subwindow_mode = IncludeInferiors;
 
    Scr->DrawGC = XCreateGC(dpy, Scr->Root, gcm, &gcv);
 
    gcm = 0;
    gcm |= GCForeground;
    gcv.foreground = Scr->MenuC.fore;
    gcm |= GCBackground;
    gcv.background = Scr->MenuC.back;
 
    Scr->MenuGC = XCreateGC(dpy, Scr->Root, gcm, &gcv);
 
    gcm = 0;
    gcm |= GCPlaneMask;
    gcv.plane_mask = AllPlanes;
    /*
     * Prevent GraphicsExpose and NoExpose events.  We'd only get NoExpose
     * events anyway;  they cause BadWindow errors from XGetWindowAttributes
     * call in FindScreenInfo (events.c) (since drawable is a pixmap).
     */
    gcm |= GCGraphicsExposures;
    gcv.graphics_exposures = False;
    gcm |= GCLineWidth;
    gcv.line_width = 0;
 
    Scr->NormalGC = XCreateGC(dpy, Scr->Root, gcm, &gcv);
 
    greypixmap = XCreatePixmapFromBitmapData(dpy, Scr->Root,
                    (char *) greypattern, 4, 4, 1, 0, 1);
 
    if(Scr->Monochrome != COLOR) {
        gcm  = 0;
        gcm |= GCStipple;
        gcv.stipple    = greypixmap;
        gcm |= GCFillStyle;
        gcv.fill_style = FillOpaqueStippled;
        gcm |= GCForeground;
        gcv.foreground = Scr->Black;
        gcm |= GCBackground;
        gcv.background = Scr->White;
        Scr->BorderGC = XCreateGC(dpy, Scr->Root, gcm, &gcv);
        XSetDashes(dpy, Scr->BorderGC, 1, dashlist, 2);
    }
    else if(Scr->BeNiceToColormap) {
        gcm  = 0;
        gcm |= GCLineStyle;
        gcv.line_style = LineDoubleDash;
        Scr->BorderGC = XCreateGC(dpy, Scr->Root, gcm, &gcv);
        XSetDashes(dpy, Scr->BorderGC, 0, dashlist, 2);
    }
    else {
        Scr->BorderGC = XCreateGC(dpy, Scr->Root, 0, NULL);
    }
}