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/*
* xmap.c: display the active colormap in a [Y]gl window.
*
* (C) Fred Hucht 1994, EMail: fred@hal6000.Uni-Duisburg.DE
*
* Feel free to copy and redistribute in terms of the
* GNU public license.
*/
#include <stdio.h>
/*#include <gl/gl.h>
#include <gl/device.h>*/
#include <X11/Ygl.h>
#define SZ 160
#define SI (SZ/m)
#ifdef XCOLOR
#define COLOR Xcolor
#define GETMCOLOR getmXcolor
#else
#define COLOR color
#define GETMCOLOR getmcolor
#endif
void set_header(char *text) {
color(BLACK);
rectfi( 0, SZ, SZ, SZ+20);
color(WHITE);
cmov2i(10, SZ + 5);
charstr(text);
}
int main(int argc, char *argv[]) {
Device dev;
short val;
int i, j, m, p, left = 0;
Int16 x,y;
Int32 win, index;
Int32 xo, yo, xs, ys;
char version[20], header[80], buf[80], *name = argv[0], *title,
*titles[]={"X11 ColorMap (<ESC> quit)",
"YGL ColorMap (<ESC> quit)",
"GL ColorMap (<ESC> quit)"};
if(-1 == gversion(version)) {
fprintf(stderr, "%s: won't run on this display.\n", version);
exit(1);
}
minsize (SZ, SZ + 20);
/* stepunit (SZ, SZ + 20); */
keepaspect(SZ, SZ + 20);
if(name[0] == 'g') title = titles[2]; /* glmap */
else if(name[1] == 'g') title = titles[1]; /* yglmap */
else title = titles[0]; /* xmap */
win = winopen(title);winconstraints();
qdevice(WINQUIT);
qdevice(KEYBD);
qdevice(REDRAW);
qdevice(INPUTCHANGE);
qenter(REDRAW, win);
qdevice(MOUSEX);
qdevice(MOUSEY);
qdevice(LEFTMOUSE);
p = getplanes();
m = 1 << (p/2);
sprintf(header, "%s, %d bpp", version, p);
while (1) {
dev = qread(&val);
#ifdef DEBUG
printf("%d %d\n", dev, val);
#endif
switch(dev) {
case INPUTCHANGE:
if(val==0) set_header(header);
break;
case MOUSEX: x = val; goto mouse;
case MOUSEY: y = val; goto mouse;
mouse: {
Int32 xw, yw, q;
Int16 r,g,b;
q = qtest();
if(q == MOUSEX || q == MOUSEY) break;
xw = x - xo;
yw = y - yo;
index = m * (yw*m/xs) + (xw*m/xs);
if(index >= 0 && index < (1<<p)) {
GETMCOLOR(index, &r, &g, &b);
#ifdef DEBUG
printf("%d %d %d %d %d %d %d=(%d,%d,%d)\n", xs, ys,
xw*m/xs, yw*m/xs, x, y, index, r, g, b);
#endif
sprintf(buf, "%d=(%d,%d,%d)", index, r, g, b);
set_header(buf);
if(left) {
COLOR(index);
rectf(0, 0, SZ-1, SZ-1);
}
}
}
break;
case KEYBD:
if(val == '\033' || val == 'q') {
gexit();
exit(0);
}
break;
case WINQUIT:
gexit();
exit(0);
break;
case LEFTMOUSE:
if(val == 1) {
left = 1;
if(index >= 0 && index < (1<<p)) {
COLOR(index);
rectf(0, 0, SZ-1, SZ-1);
}
break;
}
/* else redraw */
left = 0;
case REDRAW:
reshapeviewport();
getorigin(&xo, &yo);
getsize (&xs, &ys);
color(BLACK); clear();
set_header(header);
for(i = 0; i < m; i++) for(j = 0; j < m; j++) {
COLOR(i * m + j);
rectfi(j * SI,
i * SI,
(j+1) * SI - 1,
(i+1) * SI - 1);
}
break;
}
}
}
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