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linux: oshide becomes xenv for broader use
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@932 be3aeb3a-fb24-0410-a615-afba39da0efa
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notaz
parent
10250ad230
commit
10ef62e381
5 changed files with 119 additions and 101 deletions
281
platform/linux/xenv.c
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281
platform/linux/xenv.c
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/*
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* (C) Gražvydas "notaz" Ignotas, 2009-2011
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*
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* This work is licensed under the terms of any of these licenses
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* (at your option):
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* - GNU GPL, version 2 or later.
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* - GNU LGPL, version 2.1 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <pthread.h>
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#include <dlfcn.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/XKBlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <termios.h>
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#include <linux/kd.h>
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#define PFX "xenv: "
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#define FPTR(f) typeof(f) * p##f
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#define FPTR_LINK(xf, dl, f) { \
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xf.p##f = dlsym(dl, #f); \
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if (xf.p##f == NULL) { \
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fprintf(stderr, "missing symbol: %s\n", #f); \
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goto fail; \
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} \
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}
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struct xstuff {
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Display *display;
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FPTR(XCreateBitmapFromData);
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FPTR(XCreatePixmapCursor);
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FPTR(XFreePixmap);
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FPTR(XOpenDisplay);
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FPTR(XDisplayName);
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FPTR(XCloseDisplay);
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FPTR(XCreateSimpleWindow);
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FPTR(XChangeWindowAttributes);
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FPTR(XSelectInput);
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FPTR(XMapWindow);
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FPTR(XNextEvent);
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FPTR(XCheckTypedEvent);
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FPTR(XUnmapWindow);
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FPTR(XGrabKeyboard);
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FPTR(XPending);
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FPTR(XLookupKeysym);
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FPTR(XkbSetDetectableAutoRepeat);
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};
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static struct xstuff g_xstuff;
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static Cursor transparent_cursor(struct xstuff *xf, Display *display, Window win)
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{
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Cursor cursor;
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Pixmap pix;
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XColor dummy;
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char d = 0;
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memset(&dummy, 0, sizeof(dummy));
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pix = xf->pXCreateBitmapFromData(display, win, &d, 1, 1);
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cursor = xf->pXCreatePixmapCursor(display, pix, pix,
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&dummy, &dummy, 0, 0);
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xf->pXFreePixmap(display, pix);
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return cursor;
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}
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static int x11h_init(void)
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{
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unsigned int display_width, display_height;
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Display *display;
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XSetWindowAttributes attributes;
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Window win;
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Visual *visual;
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void *x11lib;
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int screen;
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memset(&g_xstuff, 0, sizeof(g_xstuff));
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x11lib = dlopen("libX11.so.6", RTLD_LAZY);
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if (x11lib == NULL) {
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fprintf(stderr, "libX11.so load failed:\n%s\n", dlerror());
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goto fail;
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}
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FPTR_LINK(g_xstuff, x11lib, XCreateBitmapFromData);
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FPTR_LINK(g_xstuff, x11lib, XCreatePixmapCursor);
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FPTR_LINK(g_xstuff, x11lib, XFreePixmap);
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FPTR_LINK(g_xstuff, x11lib, XOpenDisplay);
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FPTR_LINK(g_xstuff, x11lib, XDisplayName);
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FPTR_LINK(g_xstuff, x11lib, XCloseDisplay);
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FPTR_LINK(g_xstuff, x11lib, XCreateSimpleWindow);
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FPTR_LINK(g_xstuff, x11lib, XChangeWindowAttributes);
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FPTR_LINK(g_xstuff, x11lib, XSelectInput);
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FPTR_LINK(g_xstuff, x11lib, XMapWindow);
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FPTR_LINK(g_xstuff, x11lib, XNextEvent);
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FPTR_LINK(g_xstuff, x11lib, XCheckTypedEvent);
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FPTR_LINK(g_xstuff, x11lib, XUnmapWindow);
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FPTR_LINK(g_xstuff, x11lib, XGrabKeyboard);
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FPTR_LINK(g_xstuff, x11lib, XPending);
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FPTR_LINK(g_xstuff, x11lib, XLookupKeysym);
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FPTR_LINK(g_xstuff, x11lib, XkbSetDetectableAutoRepeat);
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//XInitThreads();
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g_xstuff.display = display = g_xstuff.pXOpenDisplay(NULL);
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if (display == NULL)
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{
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fprintf(stderr, "cannot connect to X server %s, X handling disabled.\n",
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g_xstuff.pXDisplayName(NULL));
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goto fail2;
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}
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visual = DefaultVisual(display, 0);
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if (visual->class != TrueColor)
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fprintf(stderr, PFX "warning: non true color visual\n");
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printf(PFX "X vendor: %s, rel: %d, display: %s, protocol ver: %d.%d\n", ServerVendor(display),
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VendorRelease(display), DisplayString(display), ProtocolVersion(display),
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ProtocolRevision(display));
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screen = DefaultScreen(display);
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display_width = DisplayWidth(display, screen);
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display_height = DisplayHeight(display, screen);
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printf(PFX "display is %dx%d\n", display_width, display_height);
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win = g_xstuff.pXCreateSimpleWindow(display,
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RootWindow(display, screen),
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0, 0, display_width, display_height, 0,
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BlackPixel(display, screen),
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BlackPixel(display, screen));
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attributes.override_redirect = True;
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attributes.cursor = transparent_cursor(&g_xstuff, display, win);
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g_xstuff.pXChangeWindowAttributes(display, win, CWOverrideRedirect | CWCursor, &attributes);
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g_xstuff.pXSelectInput(display, win, ExposureMask | FocusChangeMask | KeyPressMask | KeyReleaseMask);
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g_xstuff.pXMapWindow(display, win);
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g_xstuff.pXGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
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g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL);
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// XSetIOErrorHandler
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return 0;
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fail2:
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dlclose(x11lib);
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fail:
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g_xstuff.display = NULL;
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fprintf(stderr, "x11 handling disabled.\n");
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return -1;
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}
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static int x11h_update(int *is_down)
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{
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XEvent evt;
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while (g_xstuff.pXPending(g_xstuff.display))
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{
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g_xstuff.pXNextEvent(g_xstuff.display, &evt);
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switch (evt.type)
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{
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case Expose:
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while (g_xstuff.pXCheckTypedEvent(g_xstuff.display, Expose, &evt))
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;
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break;
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case KeyPress:
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*is_down = 1;
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return g_xstuff.pXLookupKeysym(&evt.xkey, 0);
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case KeyRelease:
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*is_down = 0;
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return g_xstuff.pXLookupKeysym(&evt.xkey, 0);
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// printf("press %d\n", evt.xkey.keycode);
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}
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}
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return NoSymbol;
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}
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static struct termios g_kbd_termios_saved;
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static int g_kbdfd;
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static int tty_init(void)
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{
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struct termios kbd_termios;
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int mode;
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g_kbdfd = open("/dev/tty", O_RDWR);
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if (g_kbdfd == -1) {
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perror(PFX "open /dev/tty");
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return -1;
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}
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if (ioctl(g_kbdfd, KDGETMODE, &mode) == -1) {
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perror(PFX "(not hiding FB): KDGETMODE");
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goto fail;
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}
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if (tcgetattr(g_kbdfd, &kbd_termios) == -1) {
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perror(PFX "tcgetattr");
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goto fail;
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}
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g_kbd_termios_saved = kbd_termios;
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kbd_termios.c_lflag &= ~(ICANON | ECHO); // | ISIG);
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kbd_termios.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON);
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kbd_termios.c_cc[VMIN] = 0;
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kbd_termios.c_cc[VTIME] = 0;
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if (tcsetattr(g_kbdfd, TCSAFLUSH, &kbd_termios) == -1) {
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perror(PFX "tcsetattr");
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goto fail;
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}
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if (ioctl(g_kbdfd, KDSETMODE, KD_GRAPHICS) == -1) {
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perror(PFX "KDSETMODE KD_GRAPHICS");
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tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved);
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goto fail;
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}
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return 0;
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fail:
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close(g_kbdfd);
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g_kbdfd = -1;
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return -1;
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}
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static void tty_end(void)
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{
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if (g_kbdfd < 0)
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return;
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if (ioctl(g_kbdfd, KDSETMODE, KD_TEXT) == -1)
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perror(PFX "KDSETMODE KD_TEXT");
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if (tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved) == -1)
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perror(PFX "tcsetattr");
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close(g_kbdfd);
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g_kbdfd = -1;
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}
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int xenv_init(void)
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{
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int ret;
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ret = x11h_init();
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if (ret == 0)
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return 0;
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ret = tty_init();
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if (ret == 0)
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return 0;
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fprintf(stderr, PFX "error: both x11h_init and tty_init failed\n");
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return -1;
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}
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int xenv_update(int *is_down)
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{
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if (g_xstuff.display)
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return x11h_update(is_down);
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// TODO: read tty?
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return -1;
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}
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void xenv_finish(void)
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{
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// TODO: cleanup X?
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tty_end();
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}
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