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/*
* Copyright 1990, 1991 by the Massachusetts Institute of Technology and
* UniSoft Group Limited.
*
* 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, and that the names of MIT and UniSoft not be
* used in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. MIT and UniSoft
* make no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* $XConsortium$
*/
#include "xtest.h"
#include "Xlib.h"
#include "Xutil.h"
#include "xtestlib.h"
#include "pixval.h"
/*
* Scribble on the drawable. A series of vertical lines are drawn starting
* at (0,0) then at (5,0) (10,0) etc.
*/
void
pattern(disp, d)
Display *disp;
Drawable d;
{
unsigned int width;
unsigned int height;
int x;
GC gc;
gc = XCreateGC(disp, d, 0, (XGCValues*)0);
XSetState(disp, gc, W_FG, W_BG, GXcopy, AllPlanes);
getsize(disp, d, &width, &height);
for (x = 0; x < width; x += 5)
XDrawLine(disp, d, gc, x, 0, x, height);
XFreeGC(disp, gc);
}
/*
* Check that the pattern that is drawn in pattern() is unchanged.
* This is done by direct pixel validation with GetImage.
* If ap is non-NULL then validation is restricted to that area
* with the origin the origin of the area.
*/
Status
checkpattern(disp, d, ap)
Display *disp;
Drawable d;
struct area *ap;
{
XImage *imp;
int x, y;
unsigned long pix;
struct area area;
if (ap == (struct area *)0) {
ap = &area;
ap->x = ap->y = 0;
getsize(disp, d, &ap->width, &ap->height);
}
imp = XGetImage(disp, d, ap->x, ap->y, ap->width, ap->height, AllPlanes, ZPixmap);
if (imp == (XImage*)0) {
report("Get Image failed in checkpattern()");
return(False);
}
for (y = 0; y < ap->height; y++) {
for (x = 0; x < ap->width; x++) {
pix = XGetPixel(imp, x, y);
if (pix != ((x%5 == 0)? W_FG: W_BG)) {
report("Bad pixel in pattern at (%d, %d)", x, y);
return(False);
}
}
}
return(True);
}
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