140 lines
2.9 KiB
C
140 lines
2.9 KiB
C
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#include <math.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/keysym.h>
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#include <GL/glx.h>
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#include <GL/gl.h>
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#include "ui.h"
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#ifndef M_PI
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# define M_PI 3.14159265
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#endif
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static int attributeList[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
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static Bool WaitForNotify(Display *d, XEvent *e, char *arg)
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{
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return (e->type == MapNotify) && (e->xmap.window == (Window)arg);
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}
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Display *dpy;
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Window win;
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void tkSwapBuffers(void)
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{
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glXSwapBuffers(dpy,win);
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}
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int ui_loop(int argc, char **argv, const char *name)
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{
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XVisualInfo *vi;
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Colormap cmap;
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XSetWindowAttributes swa;
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XSizeHints hint;
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GLXContext cx;
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XEvent event;
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int k, width, height;
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char buf[80];
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XEvent xev;
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KeySym keysym;
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XComposeStatus status;
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/* get a connection */
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dpy = XOpenDisplay(NULL);
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if (dpy == NULL) {
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fprintf(stderr,"Could not open X display\n");
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exit(1);
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}
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/* get an appropriate visual */
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vi = glXChooseVisual(dpy, DefaultScreen(dpy), attributeList);
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if (vi == NULL) {
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fprintf(stderr, "No suitable visual for glx\n");
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exit(1);
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}
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/* create a GLX context */
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cx = glXCreateContext(dpy, vi, 0, GL_TRUE);
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/* create a color map */
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cmap = XCreateColormap(dpy, RootWindow(dpy, vi->screen),
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vi->visual, AllocNone);
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/* create a window */
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width = 400;
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height = 300;
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hint.x = 0;
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hint.y = 0;
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hint.width = width;
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hint.height = height;
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hint.flags = PPosition | PSize;
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swa.colormap = cmap;
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swa.border_pixel = 0;
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swa.event_mask = StructureNotifyMask;
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win = XCreateWindow(dpy, RootWindow(dpy, vi->screen), 0, 0, width, height,
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0, vi->depth, InputOutput, vi->visual,
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CWBorderPixel|CWColormap|CWEventMask, &swa);
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XSetStandardProperties (dpy, win, name, name, None, NULL, 0, &hint);
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XMapWindow(dpy, win);
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XIfEvent(dpy, &event, WaitForNotify, (char*)win);
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XSelectInput(dpy, win, KeyPressMask | StructureNotifyMask | ExposureMask);
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/* connect the context to the window */
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glXMakeCurrent(dpy, win, cx);
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init();
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reshape(width, height);
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while (1) {
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if (XPending(dpy) > 0) {
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XNextEvent(dpy,&xev);
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switch(xev.type) {
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case KeyPress:
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XLookupString((XKeyEvent *)&xev,buf,80,&keysym,&status);
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switch(keysym) {
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case XK_Up:
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k = KEY_UP;
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break;
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case XK_Down:
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k = KEY_DOWN;
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break;
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case XK_Left:
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k = KEY_LEFT;
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break;
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case XK_Right:
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k = KEY_RIGHT;
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break;
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case XK_Escape:
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k = KEY_ESCAPE;
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break;
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default:
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k = keysym;
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}
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key(k, 0);
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break;
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case ConfigureNotify:
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{
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int width,height;
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width = xev.xconfigure.width;
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height = xev.xconfigure.height;
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glXWaitX();
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reshape(width, height);
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}
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break;
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}
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} else {
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idle();
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}
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}
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return 0;
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}
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