diff options
Diffstat (limited to 'progs/egl/eglut/eglut_x11.c')
| -rw-r--r-- | progs/egl/eglut/eglut_x11.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/progs/egl/eglut/eglut_x11.c b/progs/egl/eglut/eglut_x11.c new file mode 100644 index 0000000..f3b2280 --- /dev/null +++ b/progs/egl/eglut/eglut_x11.c @@ -0,0 +1,220 @@ +#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); + } + } +} |