#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xmu/SysUtil.h>
#include <X11/extensions/dmxext.h>
static const char *FontName = "fixed";
static void
EventLoop(Display *dpy, Window win, GC gc)
{
XEvent ev;
while (1) {
XNextEvent( dpy, &ev );
switch (ev.type) {
case ReparentNotify:
break;
case MapNotify:
break;
case ConfigureNotify:
case Expose:
{
int numScreens, count, i;
DMXWindowAttributes *winInfo;
int x, y;
const char *msg = "DMX window info:";
DMXGetScreenCount(dpy, &numScreens);
winInfo
= (DMXWindowAttributes *)
malloc(numScreens * sizeof(DMXWindowAttributes));
assert(winInfo);
if (!DMXGetWindowAttributes(dpy, win, &count,
numScreens, winInfo)) {
printf("Could not get window information for 0x%08lx\n",
(long unsigned)win);
}
x = y = 50;
XClearWindow(dpy, win);
XDrawString(dpy, win, gc, x, y, msg, strlen(msg));
y += 20;
for (i = 0; i < count; i++) {
char str[500];
XmuSnprintf(str, sizeof(str),
"screen %d: pos: %dx%d+%d+%d visible: %dx%d+%d+%d",
winInfo[i].screen,
winInfo[i].pos.width, winInfo[i].pos.height,
winInfo[i].pos.x, winInfo[i].pos.y,
winInfo[i].vis.width, winInfo[i].vis.height,
winInfo[i].vis.x, winInfo[i].vis.y);
XDrawString(dpy, win, gc, x, y, str, strlen(str));
y += 20;
}
free(winInfo);
}
break;
default:
printf("Event type 0x%x\n", ev.type);
}
}
}
int
main(int argc, char *argv[])
{
const char *displayName = NULL;
Display *dpy;
int event_base, error_base;
int scr, n;
long vinfoMask, attrMask;
XVisualInfo vinfoTemp, *visInfo;
Visual *vis;
Window win, root;
XSetWindowAttributes attr;
XFontStruct *fontInfo;
GC gc;
if (argc > 1) {
displayName = argv[1];
}
dpy = XOpenDisplay(displayName);
if (!dpy) {
fprintf(stderr, "Unable to open display %s\n", displayName);
return -1;
}
if (!DMXQueryExtension(dpy, &event_base, &error_base)) {
fprintf(stderr, "DMX extension not available on this display.\n");
return -1;
}
scr = DefaultScreen(dpy);
root = RootWindow(dpy, scr);
vis = DefaultVisual(dpy, scr);
vinfoMask = VisualIDMask;
vinfoTemp.visualid = vis->visualid;
visInfo = XGetVisualInfo(dpy, vinfoMask, &vinfoTemp, &n);
if (!visInfo || n != 1) {
fprintf(stderr, "Unable to get visual!\n");
XCloseDisplay(dpy);
return -1;
}
attr.background_pixel = 0;
attr.border_pixel = 0;
attr.colormap = XCreateColormap(dpy, root, visInfo->visual, AllocNone);
attr.event_mask = StructureNotifyMask | ExposureMask;
attrMask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
win = XCreateWindow(dpy, root,
500, 500, 600, 400,
0,
visInfo->depth, InputOutput,
visInfo->visual, attrMask, &attr);
if (!win) {
fprintf(stderr, "Unable to create window!\n");
XCloseDisplay(dpy);
return -1;
}
fontInfo = XLoadQueryFont(dpy, FontName);
if (!fontInfo) {
fprintf(stderr, "Error: font %s not found\n", FontName);
exit(0);
}
gc = XCreateGC(dpy, win, 0, NULL);
XSetBackground(dpy, gc, BlackPixel(dpy, scr));
XSetForeground(dpy, gc, WhitePixel(dpy, scr));
XSetFont(dpy, gc, fontInfo->fid);
XMapWindow(dpy, win);
EventLoop(dpy, win, gc);
XDestroyWindow(dpy, win);
XCloseDisplay(dpy);
return 0;
}
#if 00
static void make_window( char *title, int color_flag )
{
int x = 10, y = 10, width = 400, height = 300;
Display *dpy;
int scr;
Window root, win;
Colormap cmap;
XColor xcolor;
int attr_flags;
XVisualInfo *visinfo;
XSetWindowAttributes attr;
XTextProperty tp;
XSizeHints sh;
XEvent e;
XMesaContext context;
XMesaVisual visual;
XMesaBuffer buffer;
dpy = XOpenDisplay(NULL);
if (!dpy) {
printf("Couldn't open default display!\n");
exit(1);
}
scr = DefaultScreen(dpy);
root = RootWindow(dpy, scr);
visinfo = (XVisualInfo *) malloc( sizeof(XVisualInfo) );
if (color_flag) {
if (!XMatchVisualInfo( dpy, scr, 8, PseudoColor, visinfo )) {
printf("Couldn't get 8-bit PseudoColor visual!\n");
exit(1);
}
cmap = XCreateColormap( dpy, root, visinfo->visual, AllocNone );
Black = Red = Green = Blue = 0;
}
else {
if (!XMatchVisualInfo( dpy, scr, 8, PseudoColor, visinfo )) {
printf("Couldn't get 8-bit PseudoColor visual\n");
exit(1);
}
cmap = XCreateColormap( dpy, root, visinfo->visual, AllocNone );
xcolor.red = 0x0;
xcolor.green = 0x0;
xcolor.blue = 0x0;
xcolor.flags = DoRed | DoGreen | DoBlue;
if (!XAllocColor( dpy, cmap, &xcolor )) {
printf("Couldn't allocate black!\n");
exit(1);
}
Black = xcolor.pixel;
xcolor.red = 0xffff;
xcolor.green = 0x0;
xcolor.blue = 0x0;
xcolor.flags = DoRed | DoGreen | DoBlue;
if (!XAllocColor( dpy, cmap, &xcolor )) {
printf("Couldn't allocate red!\n");
exit(1);
}
Red = xcolor.pixel;
xcolor.red = 0x0;
xcolor.green = 0xffff;
xcolor.blue = 0x0;
xcolor.flags = DoRed | DoGreen | DoBlue;
if (!XAllocColor( dpy, cmap, &xcolor )) {
printf("Couldn't allocate green!\n");
exit(1);
}
Green = xcolor.pixel;
xcolor.red = 0x0;
xcolor.green = 0x0;
xcolor.blue = 0xffff;
xcolor.flags = DoRed | DoGreen | DoBlue;
if (!XAllocColor( dpy, cmap, &xcolor )) {
printf("Couldn't allocate blue!\n");
exit(1);
}
Blue = xcolor.pixel;
}
attr.colormap = cmap;
attr.event_mask = ExposureMask | StructureNotifyMask;
attr.border_pixel = BlackPixel( dpy, scr );
attr.background_pixel = BlackPixel( dpy, scr );
attr_flags = CWColormap | CWEventMask | CWBorderPixel | CWBackPixel;
win = XCreateWindow( dpy, root, x,y, width, height, 0,
visinfo->depth, InputOutput,
visinfo->visual,
attr_flags, &attr);
if (!win) {
printf("Couldn't open window!\n");
exit(1);
}
XStringListToTextProperty(&title, 1, &tp);
sh.flags = USPosition | USSize;
XSetWMProperties(dpy, win, &tp, &tp, 0, 0, &sh, 0, 0);
XMapWindow(dpy, win);
while (1) {
XNextEvent( dpy, &e );
if (e.type == MapNotify && e.xmap.window == win) {
break;
}
}
visual = XMesaCreateVisual( dpy, visinfo,
(GLboolean) color_flag,
GL_FALSE,
GL_FALSE,
GL_FALSE,
GL_FALSE,
0,
0,
0,0,0,0,
0,
0,
0
);
if (!visual) {
printf("Couldn't create Mesa/X visual!\n");
exit(1);
}
context = XMesaCreateContext( visual,
NULL
);
if (!context) {
printf("Couldn't create Mesa/X context!\n");
exit(1);
}
buffer = XMesaCreateWindowBuffer( visual, win );
if (!buffer) {
printf("Couldn't create Mesa/X buffer!\n");
exit(1);
}
XMesaMakeCurrent( context, buffer );
}
static void draw_cube( void )
{
glIndexi( Red );
glColor3f( 1.0, 0.0, 0.0 );
glBegin( GL_POLYGON );
glVertex3f( 1.0, 1.0, 1.0 );
glVertex3f( 1.0, -1.0, 1.0 );
glVertex3f( 1.0, -1.0, -1.0 );
glVertex3f( 1.0, 1.0, -1.0 );
glEnd();
glBegin( GL_POLYGON );
glVertex3f( -1.0, 1.0, 1.0 );
glVertex3f( -1.0, 1.0, -1.0 );
glVertex3f( -1.0, -1.0, -1.0 );
glVertex3f( -1.0, -1.0, 1.0 );
glEnd();
glIndexi( Green );
glColor3f( 0.0, 1.0, 0.0 );
glBegin( GL_POLYGON );
glVertex3f( 1.0, 1.0, 1.0 );
glVertex3f( 1.0, 1.0, -1.0 );
glVertex3f( -1.0, 1.0, -1.0 );
glVertex3f( -1.0, 1.0, 1.0 );
glEnd();
glBegin( GL_POLYGON );
glVertex3f( 1.0, -1.0, 1.0 );
glVertex3f( -1.0, -1.0, 1.0 );
glVertex3f( -1.0, -1.0, -1.0 );
glVertex3f( 1.0, -1.0, -1.0 );
glEnd();
glIndexi( Blue );
glColor3f( 0.0, 0.0, 1.0 );
glBegin( GL_POLYGON );
glVertex3f( 1.0, 1.0, 1.0 );
glVertex3f( -1.0, 1.0, 1.0 );
glVertex3f( -1.0, -1.0, 1.0 );
glVertex3f( 1.0, -1.0, 1.0 );
glEnd();
glBegin( GL_POLYGON );
glVertex3f( 1.0, 1.0, -1.0 );
glVertex3f( 1.0,-1.0, -1.0 );
glVertex3f( -1.0,-1.0, -1.0 );
glVertex3f( -1.0, 1.0, -1.0 );
glEnd();
}
static void display_loop( void )
{
GLfloat xrot, yrot, zrot;
xrot = yrot = zrot = 0.0;
glClearColor( 0.0, 0.0, 0.0, 0.0 );
glClearIndex( Black );
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
glFrustum( -1.0, 1.0, -1.0, 1.0, 1.0, 10.0 );
glTranslatef( 0.0, 0.0, -5.0 );
glMatrixMode( GL_MODELVIEW );
glLoadIdentity();
glCullFace( GL_BACK );
glEnable( GL_CULL_FACE );
glShadeModel( GL_FLAT );
while (1) {
glClear( GL_COLOR_BUFFER_BIT );
glPushMatrix();
glRotatef( xrot, 1.0, 0.0, 0.0 );
glRotatef( yrot, 0.0, 1.0, 0.0 );
glRotatef( zrot, 0.0, 0.0, 1.0 );
draw_cube();
glPopMatrix();
glFinish();
xrot += 10.0;
yrot += 7.0;
zrot -= 3.0;
}
}
int main( int argc, char *argv[] )
{
int mode = 0;
if (argc >= 2)
{
if (strcmp(argv[1],"-ci")==0)
mode = 0;
else if (strcmp(argv[1],"-rgb")==0)
mode = 1;
else
{
printf("Bad flag: %s\n", argv[1]);
printf("Specify -ci for 8-bit color index or -rgb for RGB mode\n");
exit(1);
}
}
else
{
printf("Specify -ci for 8-bit color index or -rgb for RGB mode\n");
printf("Defaulting to 8-bit color index\n");
}
make_window( argv[0], mode );
display_loop();
return 0;
}
#endif