basedisplay!! GAH NO FUCK OFF!@!(
This commit is contained in:
Dana Jansens
parent
f1f4cf57af
commit
ed250c3b74
2 changed files with 0 additions and 471 deletions
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// -*- mode: C++; indent-tabs-mode: nil; -*-
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#ifdef HAVE_CONFIG_H
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# include "../config.h"
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#endif // HAVE_CONFIG_H
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extern "C" {
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <X11/Xutil.h>
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#include <X11/keysym.h>
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#ifdef SHAPE
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# include <X11/extensions/shape.h>
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#endif // SHAPE
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#ifdef XINERAMA
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# include <X11/extensions/Xinerama.h>
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#endif // XINERAMA
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#ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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#endif // HAVE_FCNTL_H
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#ifdef HAVE_STDIO_H
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# include <stdio.h>
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#endif // HAVE_STDIO_H
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#ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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#endif // HAVE_STDLIB_H
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif // HAVE_STRING_H
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#ifdef HAVE_UNISTD_H
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# include <sys/types.h>
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# include <unistd.h>
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#endif // HAVE_UNISTD_H
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#ifdef HAVE_SYS_SELECT_H
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# include <sys/select.h>
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#endif // HAVE_SYS_SELECT_H
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#ifdef HAVE_SIGNAL_H
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# include <signal.h>
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#endif // HAVE_SIGNAL_H
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#ifdef HAVE_SYS_WAIT_H
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# include <sys/types.h>
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# include <sys/wait.h>
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#endif // HAVE_SYS_WAIT_H
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}
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#include <string>
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using std::string;
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#include "basedisplay.hh"
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#include "gccache.hh"
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#include "timer.hh"
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#include "otk/util.hh"
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// X error handler to handle any and all X errors while the application is
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// running
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static bool internal_error = False;
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BaseDisplay *base_display;
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static int handleXErrors(Display *d, XErrorEvent *e) {
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#ifdef DEBUG
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char errtxt[128];
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XGetErrorText(d, e->error_code, errtxt, 128); // XXX: use this!!
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fprintf(stderr, "%s: X error: %s(%d) opcodes %d/%d\n resource 0x%lx\n",
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base_display->getApplicationName(), errtxt, e->error_code,
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e->request_code, e->minor_code, e->resourceid);
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#else
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// shutup gcc
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(void) d;
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(void) e;
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#endif // DEBUG
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if (internal_error) abort();
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return(False);
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}
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// signal handler to allow for proper and gentle shutdown
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static void signalhandler(int sig) {
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static int re_enter = 0;
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switch (sig) {
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case SIGCHLD:
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int status;
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waitpid(-1, &status, WNOHANG | WUNTRACED);
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break;
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default:
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if (base_display->handleSignal(sig))
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return;
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fprintf(stderr, "%s: signal %d caught\n",
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base_display->getApplicationName(), sig);
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if (! base_display->isStartup() && ! re_enter) {
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internal_error = True;
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re_enter = 1;
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fprintf(stderr, "shutting down\n");
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base_display->shutdown();
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}
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if (sig != SIGTERM && sig != SIGINT) {
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fprintf(stderr, "aborting... dumping core\n");
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abort();
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}
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exit(0);
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break;
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}
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}
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BaseDisplay::BaseDisplay(const char *app_name, const char *dpy_name) {
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application_name = app_name;
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run_state = STARTUP;
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::base_display = this;
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struct sigaction action;
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action.sa_handler = signalhandler;
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action.sa_mask = sigset_t();
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action.sa_flags = SA_NOCLDSTOP | SA_NODEFER;
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sigaction(SIGPIPE, &action, NULL);
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sigaction(SIGSEGV, &action, NULL);
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sigaction(SIGFPE, &action, NULL);
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sigaction(SIGTERM, &action, NULL);
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sigaction(SIGINT, &action, NULL);
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sigaction(SIGCHLD, &action, NULL);
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sigaction(SIGHUP, &action, NULL);
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sigaction(SIGUSR1, &action, NULL);
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sigaction(SIGUSR2, &action, NULL);
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if (! (display = XOpenDisplay(dpy_name))) {
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fprintf(stderr,
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"BaseDisplay::BaseDisplay: connection to X server failed.\n");
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::exit(2);
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} else if (fcntl(ConnectionNumber(display), F_SETFD, 1) == -1) {
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fprintf(stderr,
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"BaseDisplay::BaseDisplay: couldn't mark display connection "
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"as close-on-exec\n");
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::exit(2);
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}
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display_name = XDisplayName(dpy_name);
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#ifdef SHAPE
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shape.extensions = XShapeQueryExtension(display, &shape.event_basep,
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&shape.error_basep);
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#else // !SHAPE
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shape.extensions = False;
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#endif // SHAPE
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#ifdef XINERAMA
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if (XineramaQueryExtension(display, &xinerama.event_basep,
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&xinerama.error_basep) &&
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XineramaQueryVersion(display, &xinerama.major, &xinerama.minor)) {
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#ifdef DEBUG
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fprintf(stderr,
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"BaseDisplay::BaseDisplay: Found Xinerama version %d.%d\n",
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xinerama.major, xinerama.minor);
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#endif // DEBUG
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xinerama.extensions = True;
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} else {
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xinerama.extensions = False;
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}
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#endif // XINERAMA
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XSetErrorHandler((XErrorHandler) handleXErrors);
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screenInfoList.reserve(ScreenCount(display));
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for (int i = 0; i < ScreenCount(display); ++i)
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screenInfoList.push_back(ScreenInfo(this, i));
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NumLockMask = ScrollLockMask = 0;
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const XModifierKeymap* const modmap = XGetModifierMapping(display);
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if (modmap && modmap->max_keypermod > 0) {
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const int mask_table[] = {
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ShiftMask, LockMask, ControlMask, Mod1Mask,
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Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
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};
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const size_t size = (sizeof(mask_table) / sizeof(mask_table[0])) *
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modmap->max_keypermod;
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// get the values of the keyboard lock modifiers
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// Note: Caps lock is not retrieved the same way as Scroll and Num lock
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// since it doesn't need to be.
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const KeyCode num_lock = XKeysymToKeycode(display, XK_Num_Lock);
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const KeyCode scroll_lock = XKeysymToKeycode(display, XK_Scroll_Lock);
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for (size_t cnt = 0; cnt < size; ++cnt) {
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if (! modmap->modifiermap[cnt]) continue;
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if (num_lock == modmap->modifiermap[cnt])
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NumLockMask = mask_table[cnt / modmap->max_keypermod];
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if (scroll_lock == modmap->modifiermap[cnt])
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ScrollLockMask = mask_table[cnt / modmap->max_keypermod];
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}
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}
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MaskList[0] = 0;
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MaskList[1] = LockMask;
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MaskList[2] = NumLockMask;
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MaskList[3] = LockMask | NumLockMask;
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MaskList[4] = ScrollLockMask;
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MaskList[5] = ScrollLockMask | LockMask;
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MaskList[6] = ScrollLockMask | NumLockMask;
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MaskList[7] = ScrollLockMask | LockMask | NumLockMask;
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MaskListLength = sizeof(MaskList) / sizeof(MaskList[0]);
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if (modmap) XFreeModifiermap(const_cast<XModifierKeymap*>(modmap));
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gccache = (BGCCache *) 0;
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}
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BaseDisplay::~BaseDisplay(void) {
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delete gccache;
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XCloseDisplay(display);
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}
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void BaseDisplay::eventLoop(void) {
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run();
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const int xfd = ConnectionNumber(display);
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while (run_state == RUNNING && ! internal_error) {
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if (XPending(display)) {
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XEvent e;
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XNextEvent(display, &e);
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process_event(&e);
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} else {
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fd_set rfds;
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timeval now, tm, *timeout = (timeval *) 0;
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FD_ZERO(&rfds);
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FD_SET(xfd, &rfds);
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if (! timerList.empty()) {
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const BTimer* const timer = timerList.top();
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gettimeofday(&now, 0);
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tm = timer->timeRemaining(now);
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timeout = &tm;
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}
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select(xfd + 1, &rfds, 0, 0, timeout);
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// check for timer timeout
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gettimeofday(&now, 0);
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// there is a small chance for deadlock here:
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// *IF* the timer list keeps getting refreshed *AND* the time between
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// timer->start() and timer->shouldFire() is within the timer's period
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// then the timer will keep firing. This should be VERY near impossible.
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while (! timerList.empty()) {
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BTimer *timer = timerList.top();
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if (! timer->shouldFire(now))
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break;
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timerList.pop();
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timer->fireTimeout();
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timer->halt();
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if (timer->isRecurring())
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timer->start();
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}
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}
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}
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}
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void BaseDisplay::addTimer(BTimer *timer) {
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if (! timer) return;
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timerList.push(timer);
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}
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void BaseDisplay::removeTimer(BTimer *timer) {
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timerList.release(timer);
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}
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/*
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* Grabs a button, but also grabs the button in every possible combination
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* with the keyboard lock keys, so that they do not cancel out the event.
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* if allow_scroll_lock is true then only the top half of the lock mask
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* table is used and scroll lock is ignored. This value defaults to false.
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*/
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void BaseDisplay::grabButton(unsigned int button, unsigned int modifiers,
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Window grab_window, bool owner_events,
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unsigned int event_mask, int pointer_mode,
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int keyboard_mode, Window confine_to,
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Cursor cursor, bool allow_scroll_lock) const {
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unsigned int length = (allow_scroll_lock) ? MaskListLength / 2:
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MaskListLength;
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for (size_t cnt = 0; cnt < length; ++cnt)
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XGrabButton(display, button, modifiers | MaskList[cnt], grab_window,
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owner_events, event_mask, pointer_mode, keyboard_mode,
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confine_to, cursor);
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}
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/*
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* Releases the grab on a button, and ungrabs all possible combinations of the
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* keyboard lock keys.
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*/
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void BaseDisplay::ungrabButton(unsigned int button, unsigned int modifiers,
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Window grab_window) const {
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for (size_t cnt = 0; cnt < MaskListLength; ++cnt)
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XUngrabButton(display, button, modifiers | MaskList[cnt], grab_window);
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}
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const ScreenInfo* BaseDisplay::getScreenInfo(unsigned int s) const {
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if (s < screenInfoList.size())
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return &screenInfoList[s];
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return (const ScreenInfo*) 0;
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}
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BGCCache* BaseDisplay::gcCache(void) const {
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if (! gccache)
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gccache = new BGCCache(this, screenInfoList.size());
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return gccache;
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}
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@ -1,120 +0,0 @@
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// -*- mode: C++; indent-tabs-mode: nil; -*-
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#ifndef __BaseDisplay_hh
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#define __BaseDisplay_hh
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#include "screeninfo.hh"
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#include "timer.hh"
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extern "C" {
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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}
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#include <vector>
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// forward declaration
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class BGCCache;
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class BaseDisplay: public TimerQueueManager {
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private:
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struct BShape {
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bool extensions;
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int event_basep, error_basep;
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};
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BShape shape;
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#ifdef XINERAMA
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struct BXinerama {
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bool extensions;
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int event_basep, error_basep;
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int major, minor; // version
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};
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BXinerama xinerama;
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#endif // XINERAMA
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unsigned int MaskList[8];
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size_t MaskListLength;
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enum RunState { STARTUP, RUNNING, SHUTDOWN };
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RunState run_state;
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Display *display;
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mutable BGCCache *gccache;
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typedef std::vector<ScreenInfo> ScreenInfoList;
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ScreenInfoList screenInfoList;
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TimerQueue timerList;
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const char *display_name, *application_name;
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// no copying!
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BaseDisplay(const BaseDisplay &);
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BaseDisplay& operator=(const BaseDisplay&);
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protected:
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// pure virtual function... you must override this
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virtual void process_event(XEvent *e) = 0;
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// the masks of the modifiers which are ignored in button events.
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int NumLockMask, ScrollLockMask;
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public:
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BaseDisplay(const char *app_name, const char *dpy_name = 0);
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virtual ~BaseDisplay(void);
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const ScreenInfo* getScreenInfo(const unsigned int s) const;
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BGCCache *gcCache(void) const;
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inline bool hasShapeExtensions(void) const
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{ return shape.extensions; }
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#ifdef XINERAMA
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inline bool hasXineramaExtensions(void) const
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{ return xinerama.extensions; }
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#endif // XINERAMA
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inline bool doShutdown(void) const
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{ return run_state == SHUTDOWN; }
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inline bool isStartup(void) const
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{ return run_state == STARTUP; }
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inline Display *getXDisplay(void) const { return display; }
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inline const char *getXDisplayName(void) const
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{ return display_name; }
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inline const char *getApplicationName(void) const
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{ return application_name; }
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inline unsigned int getNumberOfScreens(void) const
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{ return screenInfoList.size(); }
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inline int getShapeEventBase(void) const
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{ return shape.event_basep; }
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#ifdef XINERAMA
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inline int getXineramaMajorVersion(void) const
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{ return xinerama.major; }
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#endif // XINERAMA
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inline void shutdown(void) { run_state = SHUTDOWN; }
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inline void run(void) { run_state = RUNNING; }
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void grabButton(unsigned int button, unsigned int modifiers,
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Window grab_window, bool owner_events,
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unsigned int event_mask, int pointer_mode,
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int keyboard_mode, Window confine_to, Cursor cursor,
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bool allow_scroll_lock) const;
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void ungrabButton(unsigned int button, unsigned int modifiers,
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Window grab_window) const;
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void eventLoop(void);
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// from TimerQueueManager interface
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virtual void addTimer(BTimer *timer);
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virtual void removeTimer(BTimer *timer);
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// another pure virtual... this is used to handle signals that BaseDisplay
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// doesn't understand itself
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virtual bool handleSignal(int sig) = 0;
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};
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#endif // __BaseDisplay_hh
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