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#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include "eglutint.h"
void
_eglutNativeInitDisplay(void)
{
_eglut->native_dpy = XOpenDisplay(_eglut->display_name);
if (!_eglut->native_dpy)
_eglutFatal("failed to initialize native display");
_eglut->surface_type = EGL_WINDOW_BIT;
}
void
_eglutNativeFiniDisplay(void)
{
XCloseDisplay(_eglut->native_dpy);
}
void
_eglutNativeInitWindow(struct eglut_window *win, const char *title,
int x, int y, int w, int h)
{
XVisualInfo *visInfo, visTemplate;
int num_visuals;
Window root, xwin;
XSetWindowAttributes attr;
unsigned long mask;
EGLint vid;
if (!eglGetConfigAttrib(_eglut->dpy,
win->config, EGL_NATIVE_VISUAL_ID, &vid))
_eglutFatal("failed to get visual id");
/* The X window visual must match the EGL config */
visTemplate.visualid = vid;
visInfo = XGetVisualInfo(_eglut->native_dpy,
VisualIDMask, &visTemplate, &num_visuals);
if (!visInfo)
_eglutFatal("failed to get an visual of id 0x%x", vid);
root = RootWindow(_eglut->native_dpy, DefaultScreen(_eglut->native_dpy));
/* window attributes */
attr.background_pixel = 0;
attr.border_pixel = 0;
attr.colormap = XCreateColormap(_eglut->native_dpy,
root, visInfo->visual, AllocNone);
attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
xwin = XCreateWindow(_eglut->native_dpy, root, x, y, w, h,
0, visInfo->depth, InputOutput, visInfo->visual, mask, &attr);
if (!xwin)
_eglutFatal("failed to create a window");
XFree(visInfo);
/* set hints and properties */
{
XSizeHints sizehints;
sizehints.x = x;
sizehints.y = y;
sizehints.width = w;
sizehints.height = h;
sizehints.flags = USSize | USPosition;
XSetNormalHints(_eglut->native_dpy, xwin, &sizehints);
XSetStandardProperties(_eglut->native_dpy, xwin,
title, title, None, (char **) NULL, 0, &sizehints);
}
XMapWindow(_eglut->native_dpy, xwin);
win->native.u.window = xwin;
win->native.width = w;
win->native.height = h;
}
void
_eglutNativeFiniWindow(struct eglut_window *win)
{
XDestroyWindow(_eglut->native_dpy, win->native.u.window);
}
static int
lookup_keysym(KeySym sym)
{
int special;
switch (sym) {
case XK_F1:
special = EGLUT_KEY_F1;
break;
case XK_F2:
special = EGLUT_KEY_F2;
break;
case XK_F3:
special = EGLUT_KEY_F3;
break;
case XK_F4:
special = EGLUT_KEY_F4;
break;
case XK_F5:
special = EGLUT_KEY_F5;
break;
case XK_F6:
special = EGLUT_KEY_F6;
break;
case XK_F7:
special = EGLUT_KEY_F7;
break;
case XK_F8:
special = EGLUT_KEY_F8;
break;
case XK_F9:
special = EGLUT_KEY_F9;
break;
case XK_F10:
special = EGLUT_KEY_F10;
break;
case XK_F11:
special = EGLUT_KEY_F11;
break;
case XK_F12:
special = EGLUT_KEY_F12;
break;
case XK_KP_Left:
case XK_Left:
special = EGLUT_KEY_LEFT;
break;
case XK_KP_Up:
case XK_Up:
special = EGLUT_KEY_UP;
break;
case XK_KP_Right:
case XK_Right:
special = EGLUT_KEY_RIGHT;
break;
case XK_KP_Down:
case XK_Down:
special = EGLUT_KEY_DOWN;
break;
default:
special = -1;
break;
}
return special;
}
static void
next_event(struct eglut_window *win)
{
int redraw = 0;
XEvent event;
if (!XPending(_eglut->native_dpy)) {
if (_eglut->idle_cb)
_eglut->idle_cb();
return;
}
XNextEvent(_eglut->native_dpy, &event);
switch (event.type) {
case Expose:
redraw = 1;
break;
case ConfigureNotify:
win->native.width = event.xconfigure.width;
win->native.height = event.xconfigure.height;
if (win->reshape_cb)
win->reshape_cb(win->native.width, win->native.height);
break;
case KeyPress:
{
char buffer[1];
KeySym sym;
int r;
r = XLookupString(&event.xkey,
buffer, sizeof(buffer), &sym, NULL);
if (r && win->keyboard_cb) {
win->keyboard_cb(buffer[0]);
}
else if (!r && win->special_cb) {
r = lookup_keysym(sym);
if (r >= 0)
win->special_cb(r);
}
}
redraw = 1;
break;
default:
; /*no-op*/
}
_eglut->redisplay = redraw;
}
void
_eglutNativeEventLoop(void)
{
while (1) {
struct eglut_window *win = _eglut->current;
next_event(win);
if (_eglut->redisplay) {
_eglut->redisplay = 0;
if (win->display_cb)
win->display_cb();
eglSwapBuffers(_eglut->dpy, win->surface);
}
}
}
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