// BaseDisplay.cc for Fluxbox Window manager // Copyright (c) 2001 - 2002 Henrik Kinnunen (fluxgen@linuxmail.org) // // BaseDisplay.cc for Blackbox - an X11 Window manager // 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. // $Id: BaseDisplay.cc,v 1.15 2002/07/19 21:16:53 fluxgen Exp $ // use GNU extensions #ifndef _GNU_SOURCE #define _GNU_SOURCE #endif // _GNU_SOURCE #ifdef HAVE_CONFIG_H # include "../config.h" #endif // HAVE_CONFIG_H #include "BaseDisplay.hh" #include "i18n.hh" #include "Timer.hh" #include <X11/Xutil.h> #include <X11/cursorfont.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__ #ifdef DEBUG #include <iostream> using namespace std; #endif // 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; #ifdef DEBUG static int handleXErrors(Display *d, XErrorEvent *e) { char errtxt[128]; XGetErrorText(d, e->error_code, errtxt, 128); fprintf(stderr, I18n::instance()-> getMessage( FBNLS::BaseDisplaySet, FBNLS::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); #else // !DEBUG static int handleXErrors(Display *, XErrorEvent *e) { #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 I18n *i18n = I18n::instance(); 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( FBNLS::BaseDisplaySet, FBNLS::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( FBNLS::BaseDisplaySet, FBNLS::BaseDisplayShuttingDown, "shutting down\n")); base_display->shutdown(); } if (sig != SIGTERM && sig != SIGINT) { fprintf(stderr, i18n->getMessage( FBNLS::BaseDisplaySet, FBNLS::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__ BaseDisplay::BaseDisplay(char *app_name, char *dpy_name):FbAtoms(0), m_startup(true), m_shutdown(false), m_display_name(XDisplayName(dpy_name)), m_app_name(app_name), m_server_grabs(0) { last_bad_window = None; I18n *i18n = I18n::instance(); ::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(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(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 (! (m_display = XOpenDisplay(dpy_name))) { fprintf(stderr, i18n-> getMessage( FBNLS::BaseDisplaySet, FBNLS::BaseDisplayXConnectFail, "BaseDisplay::BaseDisplay: connection to X server failed.\n")); throw static_cast<int>(2); //throw error 2 } else if (fcntl(ConnectionNumber(m_display), F_SETFD, 1) == -1) { fprintf(stderr, i18n-> getMessage( FBNLS::BaseDisplaySet, FBNLS::BaseDisplayCloseOnExecFail, "BaseDisplay::BaseDisplay: couldn't mark display connection " "as close-on-exec\n")); throw static_cast<int>(2); //throw error 2 } //initiate atoms initAtoms(m_display); number_of_screens = ScreenCount(m_display); #ifdef SHAPE shape.extensions = XShapeQueryExtension(m_display, &shape.event_basep, &shape.error_basep); #else // !SHAPE shape.extensions = False; #endif // SHAPE cursor.session = XCreateFontCursor(m_display, XC_left_ptr); cursor.move = XCreateFontCursor(m_display, XC_fleur); cursor.ll_angle = XCreateFontCursor(m_display, XC_ll_angle); cursor.lr_angle = XCreateFontCursor(m_display, XC_lr_angle); XSetErrorHandler((XErrorHandler) handleXErrors); int i; for (i = 0; i < number_of_screens; i++) { ScreenInfo *screeninfo = new ScreenInfo(this, i); screenInfoList.push_back(screeninfo); } } BaseDisplay::~BaseDisplay(void) { ScreenInfoList::iterator it = screenInfoList.begin(); ScreenInfoList::iterator it_end = screenInfoList.end(); for (; it != it_end; ++it) { delete (*it); } XCloseDisplay(m_display); } void BaseDisplay::eventLoop(void) { run(); while ((! m_shutdown) && (! internal_error)) { if (XPending(m_display)) { XEvent e; XNextEvent(m_display, &e); if (last_bad_window != None && e.xany.window == last_bad_window) { #ifdef DEBUG fprintf(stderr, I18n::instance()-> getMessage( FBNLS::BaseDisplaySet, FBNLS::BaseDisplayBadWindowRemove, "BaseDisplay::eventLoop(): removing bad window " "from event queue\n")); #endif // DEBUG } else { last_bad_window = None; process_event(&e); } } else { BTimer::updateTimers(ConnectionNumber(m_display)); //handle all timers } } } bool BaseDisplay::validateWindow(Window window) { XEvent event; if (XCheckTypedWindowEvent(m_display, window, DestroyNotify, &event)) { XPutBackEvent(m_display, &event); return false; } return true; } void BaseDisplay::grab(void) { if (! m_server_grabs++) XGrabServer(m_display); } void BaseDisplay::ungrab(void) { if (! --m_server_grabs) XUngrabServer(m_display); if (m_server_grabs < 0) m_server_grabs = 0; } 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) { m_colormap = XCreateColormap(basedisplay->getXDisplay(), root_window, visual, AllocNone); } else { visual = DefaultVisual(basedisplay->getXDisplay(), screen_number); m_colormap = DefaultColormap(basedisplay->getXDisplay(), screen_number); } #ifdef XINERAMA // check if we have Xinerama extension enabled if (XineramaIsActive(basedisplay->getXDisplay())) { m_hasXinerama = true; xineramaLastHead = 0; xineramaInfos = XineramaQueryScreens(basedisplay->getXDisplay(), &xineramaNumHeads); } else { m_hasXinerama = false; xineramaInfos = 0; // make sure we don't point anywhere we shouldn't } #endif // XINERAMA } ScreenInfo::~ScreenInfo(void) { #ifdef XINERAMA if (m_hasXinerama) { // only free if we first had it XFree(xineramaInfos); xineramaInfos = 0; } #endif // XINERAMA } #ifdef XINERAMA //---------------- getHead --------------- // Searches for the head at the coordinates // x,y. If it fails or Xinerama isn't // activated it'll return head nr 0 //----------------------------------------- unsigned int ScreenInfo::getHead(int x, int y) const { // is Xinerama extensions enabled? if (hasXinerama()) { // check if last head is still active /* if ((xineramaInfos[xineramaLastHead].x_org <= x) && ((xineramaInfos[xineramaLastHead].x_org + xineramaInfos[xineramaLastHead].width) > x) && (xineramaInfos[xineramaLastHead].y_org <= y) && ((xineramaInfos[xineramaLastHead].y_org + xineramaInfos[xineramaLastHead].height) > y)) { return xineramaLastHead; } else { */ // go trough all the heads, and search for (int i = 0; (signed) i < xineramaNumHeads; i++) { if (xineramaInfos[i].x_org <= x && (xineramaInfos[i].x_org + xineramaInfos[i].width) > x && xineramaInfos[i].y_org <= y && (xineramaInfos[i].y_org + xineramaInfos[i].height) > y) // return (xineramaLastHead = i); return i; } // } } return 0; } //------------- getCurrHead -------------- // Searches for the head that the pointer // currently is on, if it isn't found // the first one is returned //---------------------------------------- unsigned int ScreenInfo::getCurrHead(void) const { // is Xinerama extensions enabled? if (hasXinerama()) { int x, y, wX, wY; unsigned int mask; Window rRoot, rChild; // get pointer cordinates if ( (XQueryPointer(basedisplay->getXDisplay(), root_window, &rRoot, &rChild, &x, &y, &wX, &wY, &mask)) != 0 ) { return getHead(x, y); } } return 0; } //----------- getHeadWidth ------------ // Returns the width of head //------------------------------------- unsigned int ScreenInfo::getHeadWidth(unsigned int head) const { if (hasXinerama()) { if ((signed) head >= xineramaNumHeads) { #ifdef DEBUG cerr << __FILE__ << ":" <<__LINE__ << ": " << "Head: " << head << " doesn't exist!" << endl; #endif // DEBUG return xineramaInfos[xineramaNumHeads - 1].width; } else return xineramaInfos[head].width; } return getWidth(); } //----------- getHeadHeight ------------ // Returns the heigt of head //-------------------------------------- unsigned int ScreenInfo::getHeadHeight(unsigned int head) const { if (hasXinerama()) { if ((signed) head >= xineramaNumHeads) { #ifdef DEBUG cerr << __FILE__ << ":" <<__LINE__ << ": " << "Head: " << head << " doesn't exist!" << endl; #endif // DEBUG return xineramaInfos[xineramaNumHeads - 1].height; } else return xineramaInfos[head].height; } return getHeight(); } //----------- getHeadX ----------------- // Returns the X start of head nr head //-------------------------------------- int ScreenInfo::getHeadX(unsigned int head) const { if (hasXinerama()) { if ((signed) head >= xineramaNumHeads) { #ifdef DEBUG cerr << __FILE__ << ":" <<__LINE__ << ": " << "Head: " << head << " doesn't exist!" << endl; #endif // DEBUG return xineramaInfos[head = xineramaNumHeads - 1].x_org; } else return xineramaInfos[head].x_org; } return 0; } //----------- getHeadY ----------------- // Returns the Y start of head //-------------------------------------- int ScreenInfo::getHeadY(unsigned int head) const { if (hasXinerama()) { if ((signed) head >= xineramaNumHeads) { #ifdef DEBUG cerr << __FILE__ << ":" <<__LINE__ << ": " << "Head: " << head << " doesn't exist!" << endl; #endif // DEBUG return xineramaInfos[xineramaNumHeads - 1].y_org; } else return xineramaInfos[head].y_org; } return 0; } #endif // XINERAMA