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Diffstat (limited to 'src/BaseDisplay.cc')
| -rw-r--r-- | src/BaseDisplay.cc | 617 |
1 files changed, 617 insertions, 0 deletions
diff --git a/src/BaseDisplay.cc b/src/BaseDisplay.cc new file mode 100644 index 00000000..258e3eab --- /dev/null +++ b/src/BaseDisplay.cc @@ -0,0 +1,617 @@ +// BaseDisplay.cc for Openbox +// Copyright (c) 2001 Sean 'Shaleh' Perry <shaleh@debian.org> +// Copyright (c) 1997 - 2000 Brad Hughes (bhughes@tcac.net) +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the "Software"), +// to deal in the Software without restriction, including without limitation +// the rights to use, copy, modify, merge, publish, distribute, sublicense, +// and/or sell copies of the Software, and to permit persons to whom the +// Software is furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +// DEALINGS IN THE SOFTWARE. + +// stupid macros needed to access some functions in version 2 of the GNU C +// library +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif // _GNU_SOURCE + +#ifdef HAVE_CONFIG_H +# include "../config.h" +#endif // HAVE_CONFIG_H + +#include <X11/Xlib.h> +#include <X11/Xatom.h> +#include <X11/Xutil.h> +#include <X11/cursorfont.h> +#include <X11/keysym.h> + +#ifdef SHAPE +# include <X11/extensions/shape.h> +#endif // SHAPE + +#ifdef HAVE_FCNTL_H +# include <fcntl.h> +#endif // HAVE_FCNTL_H + +#ifdef HAVE_STDIO_H +# include <stdio.h> +#endif // HAVE_STDIO_H + +#ifdef STDC_HEADERS +# include <stdlib.h> +# include <string.h> +#endif // STDC_HEADERS + +#ifdef HAVE_UNISTD_H +# include <sys/types.h> +# include <unistd.h> +#endif // HAVE_UNISTD_H + +#ifdef HAVE_SYS_SELECT_H +# include <sys/select.h> +#endif // HAVE_SYS_SELECT_H + +#ifdef HAVE_SIGNAL_H +# include <signal.h> +#endif // HAVE_SIGNAL_H + +#ifndef SA_NODEFER +# ifdef SA_INTERRUPT +# define SA_NODEFER SA_INTERRUPT +# else // !SA_INTERRUPT +# define SA_NODEFER (0) +# endif // SA_INTERRUPT +#endif // SA_NODEFER + +#ifdef HAVE_SYS_WAIT_H +# include <sys/types.h> +# include <sys/wait.h> +#endif // HAVE_SYS_WAIT_H + +#if defined(HAVE_PROCESS_H) && defined(__EMX__) +# include <process.h> +#endif // HAVE_PROCESS_H __EMX__ + +#include "i18n.h" +#include "BaseDisplay.h" +#include "LinkedList.h" +#include "Timer.h" + +// X error handler to handle any and all X errors while the application is +// running +static Bool internal_error = False; +static Window last_bad_window = None; + +BaseDisplay *base_display; + +static int handleXErrors(Display *d, XErrorEvent *e) { +#ifdef DEBUG + char errtxt[128]; + + XGetErrorText(d, e->error_code, errtxt, 128); + fprintf(stderr, i18n->getMessage(BaseDisplaySet, BaseDisplayXError, + "%s: X error: %s(%d) opcodes %d/%d\n resource 0x%lx\n"), + base_display->getApplicationName(), errtxt, e->error_code, + e->request_code, e->minor_code, e->resourceid); +#endif // DEBUG + + if (e->error_code == BadWindow) last_bad_window = e->resourceid; + if (internal_error) abort(); + + return(False); +} + + +// signal handler to allow for proper and gentle shutdown + +#ifndef HAVE_SIGACTION +static RETSIGTYPE signalhandler(int sig) { +#else // HAVE_SIGACTION +static void signalhandler(int sig) { +#endif // HAVE_SIGACTION + + static int re_enter = 0; + + switch (sig) { + case SIGCHLD: + int status; + waitpid(-1, &status, WNOHANG | WUNTRACED); + +#ifndef HAVE_SIGACTION + // assume broken, braindead sysv signal semantics + signal(SIGCHLD, (RETSIGTYPE (*)(int)) signalhandler); +#endif // HAVE_SIGACTION + + break; + + default: + if (base_display->handleSignal(sig)) { + +#ifndef HAVE_SIGACTION + // assume broken, braindead sysv signal semantics + signal(sig, (RETSIGTYPE (*)(int)) signalhandler); +#endif // HAVE_SIGACTION + + return; + } + + fprintf(stderr, i18n->getMessage(BaseDisplaySet, BaseDisplaySignalCaught, + "%s: signal %d caught\n"), + base_display->getApplicationName(), sig); + + if (! base_display->isStartup() && ! re_enter) { + internal_error = True; + + re_enter = 1; + fprintf(stderr, i18n->getMessage(BaseDisplaySet, BaseDisplayShuttingDown, + "shutting down\n")); + base_display->shutdown(); + } + + if (sig != SIGTERM && sig != SIGINT) { + fprintf(stderr, i18n->getMessage(BaseDisplaySet, BaseDisplayAborting, + "aborting... dumping core\n")); + abort(); + } + + exit(0); + + break; + } +} + + +// convenience functions +#ifndef __EMX__ +void bexec(const char *command, char* displaystring) { + if (! fork()) { + setsid(); + putenv(displaystring); + execl("/bin/sh", "/bin/sh", "-c", command, NULL); + exit(0); + } +} +#endif // !__EMX__ + +char *bstrdup(const char *s) { + const int l = strlen(s) + 1; + char *n = new char[l]; + strncpy(n, s, l); + return n; +} + +BaseDisplay::BaseDisplay(char *app_name, char *dpy_name) { + application_name = app_name; + + _startup = True; + _shutdown = False; + server_grabs = 0; + last_bad_window = None; + + ::base_display = this; + +#ifdef HAVE_SIGACTION + struct sigaction action; + + action.sa_handler = signalhandler; + action.sa_mask = sigset_t(); + action.sa_flags = SA_NOCLDSTOP | SA_NODEFER; + + sigaction(SIGPIPE, &action, NULL); + sigaction(SIGSEGV, &action, NULL); + sigaction(SIGFPE, &action, NULL); + sigaction(SIGTERM, &action, NULL); + sigaction(SIGINT, &action, NULL); + sigaction(SIGCHLD, &action, NULL); + sigaction(SIGHUP, &action, NULL); + sigaction(SIGUSR1, &action, NULL); + sigaction(SIGUSR2, &action, NULL); +#else // !HAVE_SIGACTION + signal(SIGPIPE, (RETSIGTYPE (*)(int)) signalhandler); + signal(SIGSEGV, (RETSIGTYPE (*)(int)) signalhandler); + signal(SIGFPE, (RETSIGTYPE (*)(int)) signalhandler); + signal(SIGTERM, (RETSIGTYPE (*)(int)) signalhandler); + signal(SIGINT, (RETSIGTYPE (*)(int)) signalhandler); + signal(SIGUSR1, (RETSIGTYPE (*)(int)) signalhandler); + signal(SIGUSR2, (RETSIGTYPE (*)(int)) signalhandler); + signal(SIGHUP, (RETSIGTYPE (*)(int)) signalhandler); + signal(SIGCHLD, (RETSIGTYPE (*)(int)) signalhandler); +#endif // HAVE_SIGACTION + + if (! (display = XOpenDisplay(dpy_name))) { + fprintf(stderr, i18n->getMessage(BaseDisplaySet, BaseDisplayXConnectFail, + "BaseDisplay::BaseDisplay: connection to X server failed.\n")); + ::exit(2); + } else if (fcntl(ConnectionNumber(display), F_SETFD, 1) == -1) { + fprintf(stderr, + i18n->getMessage(BaseDisplaySet, BaseDisplayCloseOnExecFail, + "BaseDisplay::BaseDisplay: couldn't mark display connection " + "as close-on-exec\n")); + ::exit(2); + } + + number_of_screens = ScreenCount(display); + display_name = XDisplayName(dpy_name); + +#ifdef SHAPE + shape.extensions = XShapeQueryExtension(display, &shape.event_basep, + &shape.error_basep); +#else // !SHAPE + shape.extensions = False; +#endif // SHAPE + + xa_wm_colormap_windows = + XInternAtom(display, "WM_COLORMAP_WINDOWS", False); + xa_wm_protocols = XInternAtom(display, "WM_PROTOCOLS", False); + xa_wm_state = XInternAtom(display, "WM_STATE", False); + xa_wm_change_state = XInternAtom(display, "WM_CHANGE_STATE", False); + xa_wm_delete_window = XInternAtom(display, "WM_DELETE_WINDOW", False); + xa_wm_take_focus = XInternAtom(display, "WM_TAKE_FOCUS", False); + motif_wm_hints = XInternAtom(display, "_MOTIF_WM_HINTS", False); + + openbox_hints = XInternAtom(display, "_BLACKBOX_HINTS", False); + openbox_attributes = XInternAtom(display, "_BLACKBOX_ATTRIBUTES", False); + openbox_change_attributes = + XInternAtom(display, "_BLACKBOX_CHANGE_ATTRIBUTES", False); + + openbox_structure_messages = + XInternAtom(display, "_BLACKBOX_STRUCTURE_MESSAGES", False); + openbox_notify_startup = + XInternAtom(display, "_BLACKBOX_NOTIFY_STARTUP", False); + openbox_notify_window_add = + XInternAtom(display, "_BLACKBOX_NOTIFY_WINDOW_ADD", False); + openbox_notify_window_del = + XInternAtom(display, "_BLACKBOX_NOTIFY_WINDOW_DEL", False); + openbox_notify_current_workspace = + XInternAtom(display, "_BLACKBOX_NOTIFY_CURRENT_WORKSPACE", False); + openbox_notify_workspace_count = + XInternAtom(display, "_BLACKBOX_NOTIFY_WORKSPACE_COUNT", False); + openbox_notify_window_focus = + XInternAtom(display, "_BLACKBOX_NOTIFY_WINDOW_FOCUS", False); + openbox_notify_window_raise = + XInternAtom(display, "_BLACKBOX_NOTIFY_WINDOW_RAISE", False); + openbox_notify_window_lower = + XInternAtom(display, "_BLACKBOX_NOTIFY_WINDOW_LOWER", False); + + openbox_change_workspace = + XInternAtom(display, "_BLACKBOX_CHANGE_WORKSPACE", False); + openbox_change_window_focus = + XInternAtom(display, "_BLACKBOX_CHANGE_WINDOW_FOCUS", False); + openbox_cycle_window_focus = + XInternAtom(display, "_BLACKBOX_CYCLE_WINDOW_FOCUS", False); + +#ifdef NEWWMSPEC + + net_supported = XInternAtom(display, "_NET_SUPPORTED", False); + net_client_list = XInternAtom(display, "_NET_CLIENT_LIST", False); + net_client_list_stacking = XInternAtom(display, "_NET_CLIENT_LIST_STACKING", False); + net_number_of_desktops = XInternAtom(display, "_NET_NUMBER_OF_DESKTOPS", False); + net_desktop_geometry = XInternAtom(display, "_NET_DESKTOP_GEOMETRY", False); + net_desktop_viewport = XInternAtom(display, "_NET_DESKTOP_VIEWPORT", False); + net_current_desktop = XInternAtom(display, "_NET_CURRENT_DESKTOP", False); + net_desktop_names = XInternAtom(display, "_NET_DESKTOP_NAMES", False); + net_active_window = XInternAtom(display, "_NET_ACTIVE_WINDOW", False); + net_workarea = XInternAtom(display, "_NET_WORKAREA", False); + net_supporting_wm_check = XInternAtom(display, "_NET_SUPPORTING_WM_CHECK", False); + net_virtual_roots = XInternAtom(display, "_NET_VIRTUAL_ROOTS", False); + + net_close_window = XInternAtom(display, "_NET_CLOSE_WINDOW", False); + net_wm_moveresize = XInternAtom(display, "_NET_WM_MOVERESIZE", False); + + net_properties = XInternAtom(display, "_NET_PROPERTIES", False); + net_wm_name = XInternAtom(display, "_NET_WM_NAME", False); + net_wm_desktop = XInternAtom(display, "_NET_WM_DESKTOP", False); + net_wm_window_type = XInternAtom(display, "_NET_WM_WINDOW_TYPE", False); + net_wm_state = XInternAtom(display, "_NET_WM_STATE", False); + net_wm_strut = XInternAtom(display, "_NET_WM_STRUT", False); + net_wm_icon_geometry = XInternAtom(display, "_NET_WM_ICON_GEOMETRY", False); + net_wm_icon = XInternAtom(display, "_NET_WM_ICON", False); + net_wm_pid = XInternAtom(display, "_NET_WM_PID", False); + net_wm_handled_icons = XInternAtom(display, "_NET_WM_HANDLED_ICONS", False); + + net_wm_ping = XInternAtom(display, "_NET_WM_PING", False); + +#endif // NEWWMSPEC + + cursor.session = XCreateFontCursor(display, XC_left_ptr); + cursor.move = XCreateFontCursor(display, XC_fleur); + cursor.ll_angle = XCreateFontCursor(display, XC_ll_angle); + cursor.lr_angle = XCreateFontCursor(display, XC_lr_angle); + cursor.ul_angle = XCreateFontCursor(display, XC_ul_angle); + cursor.ur_angle = XCreateFontCursor(display, XC_ur_angle); + + XSetErrorHandler((XErrorHandler) handleXErrors); + + timerList = new LinkedList<BTimer>; + + screenInfoList = new LinkedList<ScreenInfo>; + for (int i = 0; i < number_of_screens; i++) { + ScreenInfo *screeninfo = new ScreenInfo(this, i); + screenInfoList->insert(screeninfo); + } + +#ifndef NOCLOBBER + NumLockMask = ScrollLockMask = 0; + + const XModifierKeymap* const modmap = XGetModifierMapping(display); + if (modmap && modmap->max_keypermod > 0) { + const int mask_table[] = { + ShiftMask, LockMask, ControlMask, Mod1Mask, + Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask + }; + const size_t size = (sizeof(mask_table) / sizeof(mask_table[0])) * + modmap->max_keypermod; + // get the values of the keyboard lock modifiers + // Note: Caps lock is not retrieved the same way as Scroll and Num lock + // since it doesn't need to be. + const KeyCode num_lock_code = XKeysymToKeycode(display, XK_Num_Lock); + const KeyCode scroll_lock_code = XKeysymToKeycode(display, XK_Scroll_Lock); + + for (size_t cnt = 0; cnt < size; ++cnt) { + if (! modmap->modifiermap[cnt]) continue; + + if (num_lock_code == modmap->modifiermap[cnt]) + NumLockMask = mask_table[cnt / modmap->max_keypermod]; + if (scroll_lock_code == modmap->modifiermap[cnt]) + ScrollLockMask = mask_table[cnt / modmap->max_keypermod]; + } + } + + MaskList[0] = 0; + MaskList[1] = LockMask; + MaskList[2] = NumLockMask; + MaskList[3] = ScrollLockMask; + MaskList[4] = LockMask | NumLockMask; + MaskList[5] = NumLockMask | ScrollLockMask; + MaskList[6] = LockMask | ScrollLockMask; + MaskList[7] = LockMask | NumLockMask | ScrollLockMask; + MaskListLength = sizeof(MaskList) / sizeof(MaskList[0]); + + if (modmap) XFreeModifiermap(const_cast<XModifierKeymap*>(modmap)); +#endif // NOCLOBBER +} + + +BaseDisplay::~BaseDisplay(void) { + while (screenInfoList->count()) { + ScreenInfo *si = screenInfoList->first(); + + screenInfoList->remove(si); + delete si; + } + + delete screenInfoList; + + // we don't create the BTimers, we don't delete them + while (timerList->count()) + timerList->remove(0); + + delete timerList; + + XCloseDisplay(display); +} + + +void BaseDisplay::eventLoop(void) { + run(); + + int xfd = ConnectionNumber(display); + + while ((! _shutdown) && (! internal_error)) { + if (XPending(display)) { + XEvent e; + XNextEvent(display, &e); + + if (last_bad_window != None && e.xany.window == last_bad_window) { +#ifdef DEBUG + fprintf(stderr, i18n->getMessage(BaseDisplaySet, + BaseDisplayBadWindowRemove, + "BaseDisplay::eventLoop(): removing bad window " + "from event queue\n")); +#endif // DEBUG + } else { + last_bad_window = None; + process_event(&e); + } + } else { + fd_set rfds; + timeval now, tm, *timeout = (timeval *) 0; + + FD_ZERO(&rfds); + FD_SET(xfd, &rfds); + + if (timerList->count()) { + gettimeofday(&now, 0); + + tm.tv_sec = tm.tv_usec = 0l; + + BTimer *timer = timerList->first(); + + tm.tv_sec = timer->getStartTime().tv_sec + + timer->getTimeout().tv_sec - now.tv_sec; + tm.tv_usec = timer->getStartTime().tv_usec + + timer->getTimeout().tv_usec - now.tv_usec; + + while (tm.tv_usec >= 1000000) { + tm.tv_sec++; + tm.tv_usec -= 1000000; + } + + while (tm.tv_usec < 0) { + if (tm.tv_sec > 0) { + tm.tv_sec--; + tm.tv_usec += 1000000; + } else { + tm.tv_usec = 0; + break; + } + } + + timeout = &tm; + } + + select(xfd + 1, &rfds, 0, 0, timeout); + + // check for timer timeout + gettimeofday(&now, 0); + + LinkedListIterator<BTimer> it(timerList); + for(BTimer *timer = it.current(); timer; it++, timer = it.current()) { + tm.tv_sec = timer->getStartTime().tv_sec + + timer->getTimeout().tv_sec; + tm.tv_usec = timer->getStartTime().tv_usec + + timer->getTimeout().tv_usec; + + if ((now.tv_sec < tm.tv_sec) || + (now.tv_sec == tm.tv_sec && now.tv_usec < tm.tv_usec)) + break; + + timer->fireTimeout(); + + // restart the current timer so that the start time is updated + if (! timer->doOnce()) timer->start(); + else timer->stop(); + } + } + } +} + + +const Bool BaseDisplay::validateWindow(Window window) { + XEvent event; + if (XCheckTypedWindowEvent(display, window, DestroyNotify, &event)) { + XPutBackEvent(display, &event); + + return False; + } + + return True; +} + + +void BaseDisplay::grab(void) { + if (! server_grabs++) + XGrabServer(display); +} + + +void BaseDisplay::ungrab(void) { + if (! --server_grabs) + XUngrabServer(display); + + if (server_grabs < 0) server_grabs = 0; +} + + +void BaseDisplay::addTimer(BTimer *timer) { + if (! timer) return; + + LinkedListIterator<BTimer> it(timerList); + int index = 0; + for (BTimer *tmp = it.current(); tmp; it++, index++, tmp = it.current()) + if ((tmp->getTimeout().tv_sec > timer->getTimeout().tv_sec) || + ((tmp->getTimeout().tv_sec == timer->getTimeout().tv_sec) && + (tmp->getTimeout().tv_usec >= timer->getTimeout().tv_usec))) + break; + + timerList->insert(timer, index); +} + + +void BaseDisplay::removeTimer(BTimer *timer) { + timerList->remove(timer); +} + + +/* + * Grabs a button, but also grabs the button in every possible combination with + * the keyboard lock keys, so that they do not cancel out the event. + */ +void BaseDisplay::grabButton(unsigned int button, unsigned int modifiers, + Window grab_window, Bool owner_events, + unsigned int event_mask, int pointer_mode, + int keybaord_mode, Window confine_to, + Cursor cursor) const +{ +#ifndef NOCLOBBER + for (size_t cnt = 0; cnt < MaskListLength; ++cnt) + XGrabButton(display, button, modifiers | MaskList[cnt], grab_window, + owner_events, event_mask, pointer_mode, keybaord_mode, + confine_to, cursor); +#else // NOCLOBBER + XGrabButton(display, button, modifiers, grab_window, + owner_events, event_mask, pointer_mode, keybaord_mode, + confine_to, cursor); +#endif // NOCLOBBER +} + +/* + * Releases the grab on a button, and ungrabs all possible combinations of the + * keyboard lock keys. + */ +void BaseDisplay::ungrabButton(unsigned int button, unsigned int modifiers, + Window grab_window) const { +#ifndef NOCLOBBER + for (size_t cnt = 0; cnt < MaskListLength; ++cnt) + XUngrabButton(display, button, modifiers | MaskList[cnt], grab_window); +#else // NOCLOBBER + XUngrabButton(display, button, modifiers, grab_window); +#endif // NOCLOBBER +} + + +ScreenInfo::ScreenInfo(BaseDisplay *d, int num) { + basedisplay = d; + screen_number = num; + + root_window = RootWindow(basedisplay->getXDisplay(), screen_number); + depth = DefaultDepth(basedisplay->getXDisplay(), screen_number); + + width = + WidthOfScreen(ScreenOfDisplay(basedisplay->getXDisplay(), screen_number)); + height = + HeightOfScreen(ScreenOfDisplay(basedisplay->getXDisplay(), screen_number)); + + // search for a TrueColor Visual... if we can't find one... we will use the + // default visual for the screen + XVisualInfo vinfo_template, *vinfo_return; + int vinfo_nitems; + + vinfo_template.screen = screen_number; + vinfo_template.c_class = TrueColor; + + visual = (Visual *) 0; + + if ((vinfo_return = XGetVisualInfo(basedisplay->getXDisplay(), + VisualScreenMask | VisualClassMask, + &vinfo_template, &vinfo_nitems)) && + vinfo_nitems > 0) { + for (int i = 0; i < vinfo_nitems; i++) { + if (depth < (vinfo_return + i)->depth) { + depth = (vinfo_return + i)->depth; + visual = (vinfo_return + i)->visual; + } + } + + XFree(vinfo_return); + } + + if (visual) { + colormap = XCreateColormap(basedisplay->getXDisplay(), root_window, + visual, AllocNone); + } else { + visual = DefaultVisual(basedisplay->getXDisplay(), screen_number); + colormap = DefaultColormap(basedisplay->getXDisplay(), screen_number); + } +} |