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/* rgbtest.c by Fred Hucht (C) 1993-2002.
* Example program with two windows,
* one in RGBmode and one in Colormap mode */
static const char vcid[] = "$Id: rgbtest.c,v 3.3 1996/07/18 16:35:57 fred Exp $";
#include <X11/Ygl.h>
#include <stdio.h>
#include <unistd.h>
#define STEP 2
#define SIZE (256 * STEP)
Int32 RGBwin, cwin;
void drawit(int g) {
short r,b;
reshapeviewport();
for(r = 0; r < 256; r++) for(b = 0; b < 256; b++) {
RGBcolor(r, g, b);
rectfi(r*STEP, b*STEP, (r+1)*STEP, (b+1)*STEP);
}
sleep(1);
RGBcolor(255,255,0);
font(4711);
cmov2i(10, 10);
charstr("Hello in Yellow");
}
void drawitgrey(void) {
short i;
reshapeviewport();
for(i = 0; i < 256; i++) {
RGBcolor(i, i, i);
rectfi(i*STEP, 0, (i+1)*STEP, 255);
}
RGBcolor(255,255,0);
font(4711);
cmov2i(10, 10);
charstr("Hey in Grey");
}
void drawit2(void) {
winset(cwin);
reshapeviewport();
color(BLACK); clear();
color(RED); circf(0.0, 0.0, 0.8);
sleep(1);
winset(RGBwin);
}
int main() {
Device dev;
short val;
int green = 128, openwins=0;
Int32 xo, yo;
Char8 *Title = "RGBmode Window";
/* putenv("YGL_BS=1");*/
/* setenv("YGL_BS","1",1); *//* use this ones under BSD unixes */
minsize(512, 512);
cwin = winopen("Colormap Window");
openwins++;
winconstraints(); /* remove all constraints */
ortho2(-1.0, 1.0, -1.0, 1.0);
color(BLUE); clear();
/* noport(); */
minsize(SIZE, SIZE);
#ifdef SUBWIN
RGBwin = swinopen(cwin);
#else
RGBwin = winopen("RGB mode");
#endif
openwins++;
RGBmode();
gconfig();
/*ortho2(0.0, SIZE - 1, 0.0, SIZE - 1);*/
qdevice(REDRAW);
qdevice(KEYBD);
qdevice(WINQUIT);
qdevice(LEFTMOUSE);
tie(LEFTMOUSE, MOUSEX, MOUSEY); /* report mouse position on buttonpress */
winset(RGBwin);
getsize(&xo,&yo);
loadXfont(4711, "-*-times-medium-r-*-*-*-140-*-*-*-*-iso8859-1");
while (1) {
dev = qread(&val);
switch(dev) {
case LEFTMOUSE:
if(val==1) { /* If button pressed */
Int32 x, y, xs, ys;
Int16 r, g, b, mx, my;
char buf[80];
getorigin(&x, &y);
getsize(&xs, &ys);
if(MOUSEX != qread(&mx) || MOUSEY != qread(&my))
printf("tie doesn't work, strange...\n");
x = (mx - x) * xo / xs;
y = (my - y) * yo / ys;
/* Next line is to get the real color (not the desired)
* on <24 bit Visuals */
RGBcolor(x, green, y); gRGBcolor(&r, &g, &b);
sprintf(buf,"Color at (%d,%d) is (%d,%d,%d).",x,y,r,g,b);
wintitle(buf);
} else { /* Restore original title */
wintitle(Title);
}
break;
case KEYBD:
switch(val) {
case '\033' :
gexit();
return(0);
break;
case '0': green = 0; drawit(green); break;
case '9': green = 255; drawit(green); break;
case '+': green += 16; drawit(green); break;
case '-': green -= 16; drawit(green); break;
case 'g': drawitgrey(); break;
case 'p':
printf("Piping RGB window through 'ppmtogif > RGB.gif'\n");
gl2ppm("| ppmtogif > RGB.gif");
ringbell();
break;
}
break;
case WINQUIT:
winclose(val);
if(0 == --openwins) {
gexit();
return(0);
}
break;
case REDRAW:
if(val == cwin)
drawit2();
else if(val == RGBwin)
drawit(green);
break;
}
}
}
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