/* * Copyright 1988 by Evans & Sutherland Computer Corporation, * Salt Lake City, Utah * Portions Copyright 1989 by the Massachusetts Institute of Technology * Cambridge, Massachusetts * * $XConsortium: twm.c,v 1.124 91/05/08 11:01:54 dave Exp $ * * twm - "Tom's Window Manager" * * 27-Oct-87 Thomas E. LaStrange File created * 10-Oct-90 David M. Sternlicht Storing saved colors on root * * Copyright 1992 Claude Lecommandeur. * * Do the necessary modification to be integrated in ctwm. * Can no longer be used for the standard twm. * * 22-April-92 Claude Lecommandeur. */ #include "ctwm.h" #include #include #include #include #include #ifdef __WAIT_FOR_CHILDS # include #endif #include #include #include #include #include #include "ctwm_atoms.h" #include "ctwm_main.h" #include "clargs.h" #include "add_window.h" #include "gc.h" #include "parse.h" #include "version.h" #include "colormaps.h" #include "events.h" #include "util.h" #include "mask_screen.h" #include "animate.h" #include "screen.h" #include "icons.h" #include "iconmgr.h" #include "list.h" #include "session.h" #include "occupation.h" #include "otp.h" #include "cursor.h" #include "windowbox.h" #include "captive.h" #include "vscreen.h" #include "win_decorations_init.h" #include "win_ops.h" #include "win_regions.h" #include "win_utils.h" #include "workspace_manager.h" #ifdef SOUNDS # include "sound.h" #endif #include "gram.tab.h" XtAppContext appContext; /* Xt application context */ Display *dpy; /* which display are we talking to */ Window ResizeWindow; /* the window we are resizing */ int NumScreens; /* number of screens in ScreenList */ bool HasShape; /* server supports shape extension? */ int ShapeEventBase, ShapeErrorBase; ScreenInfo **ScreenList; /* structures for each screen */ ScreenInfo *Scr = NULL; /* the cur and prev screens */ int PreviousScreen; /* last screen that we were on */ static bool RedirectError; /* true ==> another window manager running */ /* for settting RedirectError */ static int CatchRedirectError(Display *display, XErrorEvent *event); /* for everything else */ static int TwmErrorHandler(Display *display, XErrorEvent *event); static Window CreateCaptiveRootWindow(int x, int y, unsigned int width, unsigned int height); static void InternUsefulAtoms(void); ScreenInfo *InitScreenInfo(int scrnum, Window croot, int crootx, int crooty, unsigned int crootw, unsigned int crooth); static bool MappedNotOverride(Window w); Cursor UpperLeftCursor; Cursor TopRightCursor, TopLeftCursor, BottomRightCursor, BottomLeftCursor, LeftCursor, RightCursor, TopCursor, BottomCursor; Cursor RightButt; Cursor MiddleButt; Cursor LeftButt; XContext TwmContext; /* context for twm windows */ XContext MenuContext; /* context for all menu windows */ XContext ScreenContext; /* context to get screen data */ XContext ColormapContext; /* context for colormap operations */ XClassHint NoClass; /* for applications with no class */ XGCValues Gcv; char *Home; /* the HOME environment variable */ int HomeLen; /* length of Home */ bool HandlingEvents = false; /* are we handling events yet? */ /* * Various junk vars for xlib calls. Many calls have to get passed these * pointers to return values into, but in a lot of cases we don't care * about some/all of them, and since xlib blindly derefs and stores into * them, we can't just pass NULL for the ones we don't care about. So we * make this set of globals to use as standin. These should never be * used or read in our own code; use real vars for the values we DO use * from the calls. */ Window JunkRoot, JunkChild; int JunkX, JunkY; unsigned int JunkWidth, JunkHeight, JunkBW, JunkDepth, JunkMask; char *ProgramName; int Argc; char **Argv; bool RestartPreviousState = true; /* try to restart in previous state */ bool RestartFlag = false; SIGNAL_T Restart(int signum); SIGNAL_T Crash(int signum); #ifdef __WAIT_FOR_CHILDS SIGNAL_T ChildExit(int signum); #endif /*********************************************************************** * * Procedure: * main - start of twm * *********************************************************************** */ int ctwm_main(int argc, char *argv[]) { int numManaged, firstscrn, lastscrn; bool FirstScreen; setlocale(LC_ALL, ""); ProgramName = argv[0]; Argc = argc; Argv = argv; /* * Run consistency check. This is mostly to keep devs from * accidental screwups; if a user ever sees anything from this, * something went very very wrong. */ chk_keytable_order(); /* * Parse-out command line args, and check the results. */ clargs_parse(argc, argv); clargs_check(); /* If we get this far, it was all good */ #define newhandler(sig, action) \ if (signal (sig, SIG_IGN) != SIG_IGN) signal (sig, action) newhandler(SIGINT, Done); signal(SIGHUP, Restart); newhandler(SIGQUIT, Done); newhandler(SIGTERM, Done); #ifdef __WAIT_FOR_CHILDS newhandler(SIGCHLD, ChildExit); #endif signal(SIGALRM, SIG_IGN); #ifdef NOTRAP signal(SIGSEGV, Crash); signal(SIGBUS, Crash); #endif #undef newhandler // Various bits of code care about $HOME Home = getenv("HOME"); if(Home == NULL) { Home = "./"; } HomeLen = strlen(Home); // XXX This is only used in AddWindow(), and is probably bogus to // have globally.... NoClass.res_name = NoName; NoClass.res_class = NoName; /* * Initialize our X connection and state bits. */ { int zero = 0; // Fakey XtToolkitInitialize(); appContext = XtCreateApplicationContext(); if(!(dpy = XtOpenDisplay(appContext, CLarg.display_name, "twm", "twm", NULL, 0, &zero, NULL))) { fprintf(stderr, "%s: unable to open display \"%s\"\n", ProgramName, XDisplayName(CLarg.display_name)); exit(1); } if(fcntl(ConnectionNumber(dpy), F_SETFD, FD_CLOEXEC) == -1) { fprintf(stderr, "%s: unable to mark display connection as close-on-exec\n", ProgramName); exit(1); } } // Load session stuff if(CLarg.restore_filename) { ReadWinConfigFile(CLarg.restore_filename); } // Load up info about X extensions HasShape = XShapeQueryExtension(dpy, &ShapeEventBase, &ShapeErrorBase); // Allocate contexts/atoms/etc we use TwmContext = XUniqueContext(); MenuContext = XUniqueContext(); ScreenContext = XUniqueContext(); ColormapContext = XUniqueContext(); InitWorkSpaceManagerContext(); InternUsefulAtoms(); // Allocate/define common cursors NewFontCursor(&TopLeftCursor, "top_left_corner"); NewFontCursor(&TopRightCursor, "top_right_corner"); NewFontCursor(&BottomLeftCursor, "bottom_left_corner"); NewFontCursor(&BottomRightCursor, "bottom_right_corner"); NewFontCursor(&LeftCursor, "left_side"); NewFontCursor(&RightCursor, "right_side"); NewFontCursor(&TopCursor, "top_side"); NewFontCursor(&BottomCursor, "bottom_side"); NewFontCursor(&UpperLeftCursor, "top_left_corner"); NewFontCursor(&RightButt, "rightbutton"); NewFontCursor(&LeftButt, "leftbutton"); NewFontCursor(&MiddleButt, "middlebutton"); // Prep up the per-screen global info NumScreens = ScreenCount(dpy); if(CLarg.MultiScreen) { firstscrn = 0; lastscrn = NumScreens - 1; } else { firstscrn = lastscrn = DefaultScreen(dpy); } // For simplicity, pre-allocate NumScreens ScreenInfo struct pointers ScreenList = calloc(NumScreens, sizeof(ScreenInfo *)); if(ScreenList == NULL) { fprintf(stderr, "%s: Unable to allocate memory for screen list, exiting.\n", ProgramName); exit(1); } // Initialize PreviousScreen = DefaultScreen(dpy); // Do a little early initialization #ifdef EWMH EwmhInit(); #endif /* EWMH */ #ifdef SOUNDS // Needs init'ing before we get to config parsing sound_init(); #endif InitEvents(); // Start looping over the screens numManaged = 0; FirstScreen = true; for(int scrnum = firstscrn ; scrnum <= lastscrn; scrnum++) { Window croot; unsigned long attrmask; int crootx, crooty; unsigned int crootw, crooth; bool screenmasked; char *welcomefile; /* * First, setup the root window for the screen. */ if(CLarg.is_captive) { // Captive ctwm. We make a fake root. XWindowAttributes wa; if(CLarg.capwin && XGetWindowAttributes(dpy, CLarg.capwin, &wa)) { Window junk; croot = CLarg.capwin; crootw = wa.width; crooth = wa.height; XTranslateCoordinates(dpy, CLarg.capwin, wa.root, 0, 0, &crootx, &crooty, &junk); } else { // Fake up default size. Probably ideally should be // configurable, but even more ideally we wouldn't have // captive... crootx = crooty = 100; crootw = 1280; crooth = 768; croot = CreateCaptiveRootWindow(crootx, crooty, crootw, crooth); } } else { // Normal; get the real display's root. croot = RootWindow(dpy, scrnum); crootx = 0; crooty = 0; crootw = DisplayWidth(dpy, scrnum); crooth = DisplayHeight(dpy, scrnum); } // Initialize to empty. This gets populated with SaveColor{} // results. String values get done via assign_var_savecolor() // call below, but keyword choicse wind up getting put in on the // fly during config file parsing, so we have to clear it before // we get to the config. // XXX Maybe we should change that... XChangeProperty(dpy, croot, XA__MIT_PRIORITY_COLORS, XA_CARDINAL, 32, PropModeReplace, NULL, 0); /* * Create ScreenInfo for this Screen, and populate various * default/initial config. */ Scr = ScreenList[scrnum] = InitScreenInfo(scrnum, croot, crootx, crooty, crootw, crooth); if(Scr == NULL) { fprintf(stderr, "%s: unable to allocate memory for ScreenInfo structure" " for screen %d.\n", ProgramName, scrnum); continue; } // Not trying to take over if we're just checking config or // making a new captive ctwm. if(CLarg.cfgchk || CLarg.is_captive) { Scr->takeover = false; } // Other misc adjustments to default config. Scr->ShowWelcomeWindow = CLarg.ShowWelcomeWindow; #ifdef EWMH // Early EWMH setup EwmhInitScreenEarly(Scr); #endif /* EWMH */ // Early OTP setup OtpScrInitData(Scr); /* * Subscribe to various events on the root window. Because X * only allows a single client to subscribe to * SubstructureRedirect and ButtonPress bits, this also serves to * mutex who is The WM for the root window, and thus (aside from * captive) the Screen. * * To catch whether that failed, we set a special one-shot error * handler to flip a var that we test to find out whether the * redirect failed. */ XSync(dpy, 0); // Flush possible previous errors RedirectError = false; XSetErrorHandler(CatchRedirectError); attrmask = ColormapChangeMask | EnterWindowMask | PropertyChangeMask | SubstructureRedirectMask | KeyPressMask | ButtonPressMask | ButtonReleaseMask; #ifdef EWMH attrmask |= StructureNotifyMask; #endif /* EWMH */ if(CLarg.is_captive) { attrmask |= StructureNotifyMask; } XSelectInput(dpy, croot, attrmask); XSync(dpy, 0); // Flush the RedirectError, if we had one // Back to our normal handler XSetErrorHandler(TwmErrorHandler); if(RedirectError && Scr->takeover) { fprintf(stderr, "%s: another window manager is already running", ProgramName); if(CLarg.MultiScreen && NumScreens > 0) { fprintf(stderr, " on screen %d?\n", scrnum); } else { fprintf(stderr, "?\n"); } // XSetErrorHandler() isn't local to the Screen; it's for the // whole connection. We wind up in a slightly weird state // once we've set it up, but decided we aren't taking over // this screen, but resetting it would be a little weird too, // because maybe we have taken over some other screen. So, // just throw up our hands. continue; } // We now manage it (or are in the various special circumstances // where it's near enough). numManaged ++; // Now we can stash some info about the screen Scr->d_depth = DefaultDepth(dpy, scrnum); Scr->d_visual = DefaultVisual(dpy, scrnum); Scr->RealRoot = RootWindow(dpy, scrnum); // Now that we have d_depth... Scr->XORvalue = (((unsigned long) 1) << Scr->d_depth) - 1; // Stash up a ref to our Scr on the root, so we can find the // right Scr for events etc. XSaveContext(dpy, Scr->Root, ScreenContext, (XPointer) Scr); // Init captive bits if(CLarg.is_captive) { Scr->CaptiveRoot = croot; Scr->captivename = AddToCaptiveList(CLarg.captivename); if(Scr->captivename) { XmbSetWMProperties(dpy, croot, Scr->captivename, Scr->captivename, NULL, 0, NULL, NULL, NULL); } } // Init some colormap bits { // 1 on the root Scr->RootColormaps.number_cwins = 1; Scr->RootColormaps.cwins = malloc(sizeof(ColormapWindow *)); Scr->RootColormaps.cwins[0] = CreateColormapWindow(Scr->Root, true, false); Scr->RootColormaps.cwins[0]->visibility = VisibilityPartiallyObscured; // Initialize storage for all maps the Screen can hold Scr->cmapInfo.cmaps = NULL; Scr->cmapInfo.maxCmaps = MaxCmapsOfScreen(ScreenOfDisplay(dpy, Scr->screen)); Scr->cmapInfo.root_pushes = 0; InstallColormaps(0, &Scr->RootColormaps); // Setup which we're using Scr->StdCmapInfo.head = Scr->StdCmapInfo.tail = Scr->StdCmapInfo.mru = NULL; Scr->StdCmapInfo.mruindex = 0; LocateStandardColormaps(); } // Are we monochrome? Or do we care this millennium? if(CLarg.Monochrome || DisplayCells(dpy, scrnum) < 3) { Scr->Monochrome = MONOCHROME; } else { Scr->Monochrome = COLOR; } // With the colormap/monochrome bits set, we can setup our // default color bits. GetColor(Scr->Monochrome, &(Scr->Black), "black"); GetColor(Scr->Monochrome, &(Scr->White), "white"); Scr->MenuShadowColor = Scr->Black; Scr->IconBorderColor = Scr->Black; Scr->IconManagerHighlight = Scr->Black; #define SETFB(fld) Scr->fld.fore = Scr->Black; Scr->fld.back = Scr->White; SETFB(DefaultC) SETFB(BorderColorC) SETFB(BorderTileC) SETFB(TitleC) SETFB(MenuC) SETFB(MenuTitleC) SETFB(IconC) SETFB(IconManagerC) SETFB(workSpaceMgr.windowcp) SETFB(workSpaceMgr.curColors) SETFB(workSpaceMgr.defColors) #undef SETFB // The first time around, we focus onto the root [of the first // Screen]. Maybe we should revisit this... if(FirstScreen) { // XXX This func also involves a lot of stuff that isn't // setup yet, and probably only works by accident. Maybe we // should just manually extract out the couple bits we // actually want to run? SetFocus(NULL, CurrentTime); FirstScreen = false; } // Create default icon manager memory bits (in the first // workspace) AllocateIconManager("TWM", "Icons", "", 1); /* * Mask over the screen with our welcome window stuff if we were * asked to on the command line/environment; too early to get * info from config file about it. */ screenmasked = false; if(Scr->ShowWelcomeWindow && (welcomefile = getenv("CTWM_WELCOME_FILE"))) { screenmasked = true; MaskScreen(welcomefile); } /* * Load up config file */ if(CLarg.cfgchk) { if(LoadTwmrc(CLarg.InitFile) == false) { /* Error return */ fprintf(stderr, "Errors found\n"); exit(1); } else { fprintf(stderr, "No errors found\n"); exit(0); } } else { LoadTwmrc(CLarg.InitFile); } /* * Setup stuff relating to VirtualScreens. If something to do * with it is set in the config, this all implements stuff needed * for that. If not, InitVirtualScreens() creates a single one * mirroring our real root. */ InitVirtualScreens(Scr); #ifdef EWMH EwmhInitVirtualRoots(Scr); #endif /* EWMH */ // Setup WSM[s] (per-vscreen) ConfigureWorkSpaceManager(); // If the config wants us to show the splash screen and we // haven't already, do it now. if(Scr->ShowWelcomeWindow && !screenmasked) { MaskScreen(NULL); } /* * Do various setup based on the results from the config file. */ if(Scr->ClickToFocus) { Scr->FocusRoot = false; Scr->TitleFocus = false; } if(Scr->use3Dborders) { Scr->ClientBorderWidth = false; } /* * Various decoration default overrides for 3d/2d. Values that * [presumtively] look "nice" on 75/100dpi displays. -100 is a * sentinel value we set before the config file parsing; since * these defaults differ for 3d vs not, we can't just set them as * default before the parse. */ #define SETDEF(fld, num) if(Scr->fld == -100) { Scr->fld = num; } if(Scr->use3Dtitles) { SETDEF(FramePadding, 0); SETDEF(TitlePadding, 0); SETDEF(ButtonIndent, 0); SETDEF(TBInfo.border, 0); } else { SETDEF(FramePadding, 2); SETDEF(TitlePadding, 8); SETDEF(ButtonIndent, 1); SETDEF(TBInfo.border, 1); } #undef SETDEF // These values are meaningless in !3d cases, so always zero them // out. if(! Scr->use3Dtitles) { Scr->TitleShadowDepth = 0; Scr->TitleButtonShadowDepth = 0; } if(! Scr->use3Dborders) { Scr->BorderShadowDepth = 0; } if(! Scr->use3Dmenus) { Scr->MenuShadowDepth = 0; } if(! Scr->use3Diconmanagers) { Scr->IconManagerShadowDepth = 0; } if(! Scr->use3Dborders) { Scr->ThreeDBorderWidth = 0; } // Setup colors stuff if(!Scr->BeNiceToColormap) { // Default pair GetShadeColors(&Scr->DefaultC); // Various conditionally 3d bits if(Scr->use3Dtitles) { GetShadeColors(&Scr->TitleC); } if(Scr->use3Dmenus) { GetShadeColors(&Scr->MenuC); } if(Scr->use3Dmenus) { GetShadeColors(&Scr->MenuTitleC); } if(Scr->use3Dborders) { GetShadeColors(&Scr->BorderColorC); } } // Defaults for IconRegion bits that aren't set. for(IconRegion *ir = Scr->FirstRegion; ir; ir = ir->next) { if(ir->TitleJustification == TJ_UNDEF) { ir->TitleJustification = Scr->IconJustification; } if(ir->Justification == IRJ_UNDEF) { ir->Justification = Scr->IconRegionJustification; } if(ir->Alignement == IRA_UNDEF) { ir->Alignement = Scr->IconRegionAlignement; } } // Put the results of SaveColor{} into _MIT_PRIORITY_COLORS. assign_var_savecolor(); // Setup cursor values that weren't give in the config #define DEFCURSOR(name, val) if(!Scr->name) NewFontCursor(&Scr->name, val) DEFCURSOR(FrameCursor, "top_left_arrow"); DEFCURSOR(TitleCursor, "top_left_arrow"); DEFCURSOR(IconCursor, "top_left_arrow"); DEFCURSOR(IconMgrCursor, "top_left_arrow"); DEFCURSOR(MoveCursor, "fleur"); DEFCURSOR(ResizeCursor, "fleur"); DEFCURSOR(MenuCursor, "sb_left_arrow"); DEFCURSOR(ButtonCursor, "hand2"); DEFCURSOR(WaitCursor, "watch"); DEFCURSOR(SelectCursor, "dot"); DEFCURSOR(DestroyCursor, "pirate"); DEFCURSOR(AlterCursor, "question_arrow"); #undef DEFCURSOR // Load up fonts for the screen. // // XXX HaveFonts is kinda stupid, however it gets useful in one // place: when loading button bindings, we make some sort of // "menu" for things (x-ref GotButton()), and the menu gen code // needs to load font stuff, so if that happened in the config // process, we would have already run CreateFonts(). Of course, // that's a order-dependent bit of the config file parsing too; // if you define the fonts too late, they wouldn't have been set // by then, and we won't [re]try them now... arg. if(!Scr->HaveFonts) { CreateFonts(Scr); } // Adjust settings for titlebar. Must follow CreateFonts() call // so we know these bits are populated Scr->TitleBarFont.y += Scr->FramePadding; Scr->TitleHeight = Scr->TitleBarFont.height + Scr->FramePadding * 2; if(Scr->use3Dtitles) { Scr->TitleHeight += 2 * Scr->TitleShadowDepth; } /* make title height be odd so buttons look nice and centered */ if(!(Scr->TitleHeight & 1)) { Scr->TitleHeight++; } // Setup GC's for drawing, so we can start making stuff we have // to actually draw. Could move earlier, has to preceed a lot of // following. CreateGCs(); // Create and draw the menus we config'd MakeMenus(); // Load up the images for titlebar buttons InitTitlebarButtons(); // Allocate controls for WindowRegion's. Has to follow // workspaces setup, but doesn't talk to X. CreateWindowRegions(); // Copy the icon managers over to workspaces past the first as // necessary. AllocateIconManager() and the config parsing // already made them on the first WS. AllocateOtherIconManagers(); // Create the windows for our icon managers now that all our // tracking for it is setup. CreateIconManagers(); // Create the WSM window (per-vscreen) and stash info on the root // about our WS's. CreateWorkSpaceManager(); // Create the f.occupy window CreateOccupyWindow(); // Setup TwmWorkspaces menu. Needs workspaces setup, as well as // menus made. MakeWorkspacesMenu(); // setup WindowBox's createWindowBoxes(); // Initialize Xrm stuff; things with setting occupation etc use // Xrm bits. XrmInitialize(); #ifdef EWMH // Set EWMH-related properties on various root-ish windows, for // other programs to read to find out how we view the world. EwmhInitScreenLate(Scr); #endif /* EWMH */ /* * Look up and handle all the windows on the screen. */ { Window parent, *children; unsigned int nchildren; XQueryTree(dpy, Scr->Root, &croot, &parent, &children, &nchildren); /* Weed out icon windows */ for(int i = 0; i < nchildren; i++) { if(children[i]) { XWMHints *wmhintsp = XGetWMHints(dpy, children[i]); if(wmhintsp) { if(wmhintsp->flags & IconWindowHint) { for(int j = 0; j < nchildren; j++) { if(children[j] == wmhintsp->icon_window) { children[j] = None; break; } } } XFree(wmhintsp); } } } /* * Map all of the non-override windows. This winds down * into AddWindow() and friends through SimulateMapRequest(), * so this is where we actually adopt the windows on the * screen. */ for(int i = 0; i < nchildren; i++) { if(children[i] && MappedNotOverride(children[i])) { XUnmapWindow(dpy, children[i]); SimulateMapRequest(children[i]); } } /* * At this point, we've adopted all the windows currently on * the screen (aside from those we're intentionally not). * Note that this happens _before_ the various other windows * we create below, which is why they don't wind up getting * TwmWindow's tied to them or show up in icon managers, etc. * We'd need to actually make it _explicit_ that those * windows aren't tracked by us if we changed that order... */ } // Show the WSM window if we should if(Scr->ShowWorkspaceManager && Scr->workSpaceManagerActive) { VirtualScreen *vs; if(Scr->WindowMask) { XRaiseWindow(dpy, Scr->WindowMask); } for(vs = Scr->vScreenList; vs != NULL; vs = vs->next) { SetMapStateProp(vs->wsw->twm_win, NormalState); XMapWindow(dpy, vs->wsw->twm_win->frame); if(vs->wsw->twm_win->StartSqueezed) { Squeeze(vs->wsw->twm_win); } else { XMapWindow(dpy, vs->wsw->w); } vs->wsw->twm_win->mapped = true; } } /* * Setup the Info window, used for f.identify and f.version. */ { unsigned long valuemask; XSetWindowAttributes attributes; attributes.border_pixel = Scr->DefaultC.fore; attributes.background_pixel = Scr->DefaultC.back; attributes.event_mask = (ExposureMask | ButtonPressMask | KeyPressMask | ButtonReleaseMask); NewFontCursor(&attributes.cursor, "hand2"); valuemask = (CWBorderPixel | CWBackPixel | CWEventMask | CWCursor); Scr->InfoWindow.win = XCreateWindow(dpy, Scr->Root, 0, 0, 5, 5, 0, 0, CopyFromParent, CopyFromParent, valuemask, &attributes); } /* * Setup the Size/Position window for showing during resize/move * operations. */ { int sx, sy; XRectangle ink_rect; XRectangle logical_rect; unsigned long valuemask; XSetWindowAttributes attributes; XmbTextExtents(Scr->SizeFont.font_set, " 8888 x 8888 ", 13, &ink_rect, &logical_rect); Scr->SizeStringWidth = logical_rect.width; valuemask = (CWBorderPixel | CWBackPixel | CWBitGravity); attributes.bit_gravity = NorthWestGravity; if(Scr->CenterFeedbackWindow) { sx = (Scr->rootw / 2) - (Scr->SizeStringWidth / 2); sy = (Scr->rooth / 2) - ((Scr->SizeFont.height + SIZE_VINDENT * 2) / 2); if(Scr->SaveUnder) { attributes.save_under = True; valuemask |= CWSaveUnder; } } else { sx = 0; sy = 0; } Scr->SizeWindow = XCreateWindow(dpy, Scr->Root, sx, sy, Scr->SizeStringWidth, (Scr->SizeFont.height + SIZE_VINDENT * 2), 0, 0, CopyFromParent, CopyFromParent, valuemask, &attributes); } // Create util window used in animation Scr->ShapeWindow = XCreateSimpleWindow(dpy, Scr->Root, 0, 0, Scr->rootw, Scr->rooth, 0, 0, 0); // Clear out the splash screen if we had one if(Scr->ShowWelcomeWindow) { UnmaskScreen(); } // Done setting up this Screen. x-ref XXX's about whether this // element is worth anything... Scr->FirstTime = false; } // for each screen on display // We're not much of a window manager if we didn't get stuff to // manage... if(numManaged == 0) { if(CLarg.MultiScreen && NumScreens > 0) fprintf(stderr, "%s: unable to find any unmanaged screens\n", ProgramName); exit(1); } // Hook up session ConnectToSessionManager(CLarg.client_id); #ifdef SOUNDS // Announce ourselves sound_load_list(); play_startup_sound(); #endif // Hard-reset this flag. // XXX This doesn't seem right? RestartPreviousState = true; // Do some late initialization HandlingEvents = true; StartAnimation(); // Main loop. HandleEvents(); // Should never get here... fprintf(stderr, "Shouldn't return from HandleEvents()!\n"); exit(1); } /** * Initialize ScreenInfo for a Screen. This allocates the struct, * assigns in the info we pass it about the screen and dimensions, and * then puts in our various default/fallback/sentinel/etc values to * prepare it for later use. * * It is intentional that this doesn't do any of the initialization that * involves calling out to X functions; it operates as a pure function. * This makes it easier to use it to fake up a ScreenInfo for something * that isn't actually an X Screen, for testing etc. * * \param scrnum The Screen number (e.g, :0.0 -> 0) * \param croot The X Window for the Screen's root window * \param crootx Root X coordinate * \param crooty Root Y coordinate * \param crootw Root width * \param crooth Root height * \return Allocated and populated ScreenInfo */ ScreenInfo * InitScreenInfo(int scrnum, Window croot, int crootx, int crooty, unsigned int crootw, unsigned int crooth) { ScreenInfo *scr; scr = calloc(1, sizeof(ScreenInfo)); if(scr == NULL) { return NULL; } // Because of calloc(), it's already all 0 bytes, which are NULL and // false and 0 and similar. Some following initializations are // nugatory because of that, but are left for clarity. // Poison the global Scr to protect against typos #define Scr StupidProgrammer // Basic pieces about the X screen we're talking about, and some // derived dimension-related bits. scr->screen = scrnum; scr->XineramaRoot = scr->Root = croot; scr->rootx = scr->crootx = crootx; scr->rooty = scr->crooty = crooty; scr->rootw = scr->crootw = crootw; scr->rooth = scr->crooth = crooth; // Don't allow icon titles wider than the screen scr->MaxIconTitleWidth = scr->rootw; // Attempt to come up with a sane default for the max sizes. Start // by limiting so that a window with its left/top on the right/bottom // edge of the screen can't extend further than X can address (signed // 16-bit). However, when your screen size starts approaching that // limit, reducing the max window sizes too much gets stupid too, so // set an arbitrary floor on how low this will take it. // MaxWindowSize in the config will override whatever's here anyway. scr->MaxWindowWidth = 32767 - (scr->rootx + scr->rootw); scr->MaxWindowHeight = 32767 - (scr->rooty + scr->rooth); if(scr->MaxWindowWidth < 4096) { scr->MaxWindowWidth = 4096; } if(scr->MaxWindowHeight < 4096) { scr->MaxWindowHeight = 4096; } // Flags used in the code to keep track of where in various processes // (especially startup) we are. scr->HaveFonts = false; // Flag which basically means "initial screen setup time". // XXX Not clear to what extent this should even exist; a lot of // uses are fairly bogus. scr->FirstTime = true; // We're a WM, we're usually trying to take over (x-ref later code in // caller) scr->takeover = true; // Sentinel values for defaulting config values scr->FramePadding = -100; scr->TitlePadding = -100; scr->ButtonIndent = -100; scr->TBInfo.border = -100; // Default values for all sorts of config params scr->SizeStringOffset = 0; scr->ThreeDBorderWidth = 6; scr->BorderWidth = BW; scr->IconBorderWidth = BW; scr->NumAutoRaises = 0; scr->NumAutoLowers = 0; scr->TransientOnTop = 30; scr->NoDefaults = false; scr->UsePPosition = PPOS_OFF; scr->UseSunkTitlePixmap = false; scr->FocusRoot = true; scr->WarpCursor = false; scr->ForceIcon = false; scr->NoGrabServer = true; scr->NoRaiseMove = false; scr->NoRaiseResize = false; scr->NoRaiseDeicon = false; scr->RaiseOnWarp = true; scr->DontMoveOff = false; scr->DoZoom = false; scr->TitleFocus = true; scr->IconManagerFocus = true; scr->StayUpMenus = false; scr->WarpToDefaultMenuEntry = false; scr->ClickToFocus = false; scr->SloppyFocus = false; scr->SaveWorkspaceFocus = false; scr->NoIconTitlebar = false; scr->NoTitlebar = false; scr->DecorateTransients = true; scr->IconifyByUnmapping = false; scr->ShowIconManager = false; scr->ShowWorkspaceManager = false; scr->WMgrButtonShadowDepth = 2; scr->WMgrVertButtonIndent = 5; scr->WMgrHorizButtonIndent = 5; scr->BorderShadowDepth = 2; scr->TitleShadowDepth = 2; scr->TitleButtonShadowDepth = 2; scr->MenuShadowDepth = 2; scr->IconManagerShadowDepth = 2; scr->AutoOccupy = false; scr->TransientHasOccupation = false; scr->DontPaintRootWindow = false; scr->IconManagerDontShow = false; scr->BackingStore = false; scr->SaveUnder = true; scr->RandomPlacement = RP_ALL; scr->RandomDisplacementX = 30; scr->RandomDisplacementY = 30; scr->DoOpaqueMove = true; scr->OpaqueMove = false; scr->OpaqueMoveThreshold = 200; scr->OpaqueResize = false; scr->DoOpaqueResize = true; scr->OpaqueResizeThreshold = 1000; scr->Highlight = true; scr->StackMode = true; scr->TitleHighlight = true; scr->MoveDelta = 1; scr->MoveOffResistance = -1; scr->MovePackResistance = 20; scr->ZoomCount = 8; scr->SortIconMgr = true; scr->Shadow = true; scr->InterpolateMenuColors = false; scr->NoIconManagers = false; scr->ClientBorderWidth = false; scr->SqueezeTitle = false; scr->FirstTime = true; scr->CaseSensitive = true; scr->WarpUnmapped = false; scr->WindowRingAll = false; scr->WarpRingAnyWhere = true; scr->ShortAllWindowsMenus = false; scr->use3Diconmanagers = false; scr->use3Dmenus = false; scr->use3Dtitles = false; scr->use3Dborders = false; scr->use3Dwmap = false; scr->SunkFocusWindowTitle = false; scr->ClearShadowContrast = 50; scr->DarkShadowContrast = 40; scr->BeNiceToColormap = false; scr->BorderCursors = false; scr->IconJustification = TJ_CENTER; scr->IconRegionJustification = IRJ_CENTER; scr->IconRegionAlignement = IRA_CENTER; scr->TitleJustification = TJ_LEFT; scr->IconifyStyle = ICONIFY_NORMAL; scr->ReallyMoveInWorkspaceManager = false; scr->ShowWinWhenMovingInWmgr = false; scr->ReverseCurrentWorkspace = false; scr->DontWarpCursorInWMap = false; scr->XMoveGrid = 1; scr->YMoveGrid = 1; scr->CenterFeedbackWindow = false; scr->ShrinkIconTitles = false; scr->AutoRaiseIcons = false; scr->AutoFocusToTransients = false; scr->OpenWindowTimeout = 0; scr->RaiseWhenAutoUnSqueeze = false; scr->RaiseOnClick = false; scr->RaiseOnClickButton = 1; scr->IgnoreModifier = 0; scr->IgnoreCaseInMenuSelection = false; scr->PackNewWindows = false; scr->AlwaysSqueezeToGravity = false; scr->NoWarpToMenuTitle = false; scr->DontToggleWorkspaceManagerState = false; scr->NameDecorations = true; scr->ForceFocus = false; scr->BorderTop = 0; scr->BorderBottom = 0; scr->BorderLeft = 0; scr->BorderRight = 0; scr->PixmapDirectory = PIXMAP_DIRECTORY; #ifdef EWMH scr->PreferredIconWidth = 48; scr->PreferredIconHeight = 48; #endif // WorkSpaceManager stuff scr->workSpaceMgr.initialstate = WMS_map; scr->workSpaceMgr.buttonStyle = STYLE_NORMAL; scr->workSpaceMgr.vspace = scr->WMgrVertButtonIndent; scr->workSpaceMgr.hspace = scr->WMgrHorizButtonIndent; scr->workSpaceMgr.occupyWindow = calloc(1, sizeof(OccupyWindow)); scr->workSpaceMgr.occupyWindow->vspace = scr->WMgrVertButtonIndent; scr->workSpaceMgr.occupyWindow->hspace = scr->WMgrHorizButtonIndent; scr->workSpaceMgr.occupyWindow->name = "Occupy Window"; scr->workSpaceMgr.occupyWindow->icon_name = "Occupy Window Icon"; scr->workSpaceMgr.name = "WorkSpaceManager"; scr->workSpaceMgr.icon_name = "WorkSpaceManager Icon"; // Setup default fonts in case the config file doesn't #define DEFAULT_NICE_FONT "-*-helvetica-bold-r-normal-*-*-120-*" #define DEFAULT_FAST_FONT "-misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-*" #define SETFONT(fld, var) (scr->fld##Font.basename = DEFAULT_##var##_FONT) SETFONT(TitleBar, NICE); SETFONT(Menu, NICE); SETFONT(Icon, NICE); SETFONT(Size, FAST); SETFONT(IconManager, NICE); SETFONT(Default, FAST); scr->workSpaceMgr.windowFont.basename = "-adobe-courier-medium-r-normal--10-100-75-75-m-60-iso8859-1"; #undef SETFONT #undef DEFAULT_FAST_FONT #undef DEFAULT_NICE_FONT // Cleanup poisoning #undef Scr return scr; } void CreateFonts(ScreenInfo *scr) { #define LOADFONT(fld) (GetFont(&scr->fld##Font)) LOADFONT(TitleBar); LOADFONT(Menu); LOADFONT(Icon); LOADFONT(Size); LOADFONT(IconManager); LOADFONT(Default); LOADFONT(workSpaceMgr.window); #undef LOADFONT scr->HaveFonts = true; } void RestoreWithdrawnLocation(TwmWindow *tmp) { int gravx, gravy; unsigned int bw, mask; XWindowChanges xwc; if(tmp->UnmapByMovingFarAway && !visible(tmp)) { XMoveWindow(dpy, tmp->frame, tmp->frame_x, tmp->frame_y); } if(tmp->squeezed) { Squeeze(tmp); } if(XGetGeometry(dpy, tmp->w, &JunkRoot, &xwc.x, &xwc.y, &JunkWidth, &JunkHeight, &bw, &JunkDepth)) { GetGravityOffsets(tmp, &gravx, &gravy); if(gravy < 0) { xwc.y -= tmp->title_height; } xwc.x += gravx * tmp->frame_bw3D; xwc.y += gravy * tmp->frame_bw3D; if(bw != tmp->old_bw) { int xoff, yoff; if(!Scr->ClientBorderWidth) { xoff = gravx; yoff = gravy; } else { xoff = 0; yoff = 0; } xwc.x -= (xoff + 1) * tmp->old_bw; xwc.y -= (yoff + 1) * tmp->old_bw; } if(!Scr->ClientBorderWidth) { xwc.x += gravx * tmp->frame_bw; xwc.y += gravy * tmp->frame_bw; } mask = (CWX | CWY); if(bw != tmp->old_bw) { xwc.border_width = tmp->old_bw; mask |= CWBorderWidth; } #if 0 if(tmp->vs) { xwc.x += tmp->vs->x; xwc.y += tmp->vs->y; } #endif if(tmp->winbox && tmp->winbox->twmwin && tmp->frame) { int xbox, ybox; if(XGetGeometry(dpy, tmp->frame, &JunkRoot, &xbox, &ybox, &JunkWidth, &JunkHeight, &bw, &JunkDepth)) { ReparentWindow(dpy, tmp, WinWin, Scr->Root, xbox, ybox); } } XConfigureWindow(dpy, tmp->w, mask, &xwc); if(tmp->wmhints->flags & IconWindowHint) { XUnmapWindow(dpy, tmp->wmhints->icon_window); } } } /*********************************************************************** * * Procedure: * Done - cleanup and exit twm * * Returned Value: * none * * Inputs: * none * * Outputs: * none * * Special Considerations: * none * *********************************************************************** */ void Reborder(Time mytime) { TwmWindow *tmp; /* temp twm window structure */ int scrnum; ScreenInfo *savedScreen; /* Its better to avoid coredumps */ /* put a border back around all windows */ XGrabServer(dpy); savedScreen = Scr; for(scrnum = 0; scrnum < NumScreens; scrnum++) { if((Scr = ScreenList[scrnum]) == NULL) { continue; } InstallColormaps(0, &Scr->RootColormaps); /* force reinstall */ for(tmp = Scr->FirstWindow; tmp != NULL; tmp = tmp->next) { RestoreWithdrawnLocation(tmp); XMapWindow(dpy, tmp->w); } } Scr = savedScreen; XUngrabServer(dpy); SetFocus(NULL, mytime); } SIGNAL_T Done(int signum) { #ifdef SOUNDS play_exit_sound(); #endif Reborder(CurrentTime); #ifdef EWMH EwmhTerminate(); #endif /* EWMH */ XDeleteProperty(dpy, Scr->Root, XA_WM_WORKSPACESLIST); if(CLarg.is_captive) { RemoveFromCaptiveList(Scr->captivename); } XCloseDisplay(dpy); exit(0); } SIGNAL_T Crash(int signum) { Reborder(CurrentTime); XDeleteProperty(dpy, Scr->Root, XA_WM_WORKSPACESLIST); if(CLarg.is_captive) { RemoveFromCaptiveList(Scr->captivename); } XCloseDisplay(dpy); fprintf(stderr, "\nCongratulations, you have found a bug in ctwm\n"); fprintf(stderr, "If a core file was generated in your directory,\n"); fprintf(stderr, "can you please try extract the stack trace,\n"); fprintf(stderr, "and mail the results, and a description of what you were doing,\n"); fprintf(stderr, "to ctwm@ctwm.org. Thank you for your support.\n"); fprintf(stderr, "...exiting ctwm now.\n\n"); abort(); } SIGNAL_T Restart(int signum) { fprintf(stderr, "%s: setting restart flag\n", ProgramName); RestartFlag = true; } void DoRestart(Time t) { RestartFlag = false; StopAnimation(); XSync(dpy, 0); Reborder(t); XSync(dpy, 0); if(smcConn) { SmcCloseConnection(smcConn, 0, NULL); } fprintf(stderr, "%s: restarting: %s\n", ProgramName, *Argv); execvp(*Argv, Argv); fprintf(stderr, "%s: unable to restart: %s\n", ProgramName, *Argv); } #ifdef __WAIT_FOR_CHILDS /* * Handler for SIGCHLD. Needed to avoid zombies when an .xinitrc * execs ctwm as the last client. (All processes forked off from * within .xinitrc have been inherited by ctwm during the exec.) * Jens Schweikhardt */ SIGNAL_T ChildExit(int signum) { int Errno = errno; signal(SIGCHLD, ChildExit); /* reestablish because we're a one-shot */ waitpid(-1, NULL, WNOHANG); /* reap dead child, ignore status */ errno = Errno; /* restore errno for interrupted sys calls */ } #endif /* * Error Handlers. If a client dies, we'll get a BadWindow error (except for * GetGeometry which returns BadDrawable) for most operations that we do before * manipulating the client's window. */ static XErrorEvent LastErrorEvent; static int TwmErrorHandler(Display *display, XErrorEvent *event) { LastErrorEvent = *event; if(CLarg.PrintErrorMessages && /* don't be too obnoxious */ event->error_code != BadWindow && /* watch for dead puppies */ (event->request_code != X_GetGeometry && /* of all styles */ event->error_code != BadDrawable)) { XmuPrintDefaultErrorMessage(display, event, stderr); } return 0; } /* ARGSUSED*/ static int CatchRedirectError(Display *display, XErrorEvent *event) { RedirectError = true; LastErrorEvent = *event; return 0; } /* * XA_MIT_PRIORITY_COLORS Create priority colors if necessary. * XA_WM_END_OF_ANIMATION Used to throttle animation. */ Atom XCTWMAtom[NUM_CTWM_XATOMS]; void InternUsefulAtoms(void) { XInternAtoms(dpy, XCTWMAtomNames, NUM_CTWM_XATOMS, False, XCTWMAtom); } static Window CreateCaptiveRootWindow(int x, int y, unsigned int width, unsigned int height) { int scrnum; Window ret; XWMHints wmhints; scrnum = DefaultScreen(dpy); ret = XCreateSimpleWindow(dpy, RootWindow(dpy, scrnum), x, y, width, height, 2, WhitePixel(dpy, scrnum), BlackPixel(dpy, scrnum)); wmhints.initial_state = NormalState; wmhints.input = True; wmhints.flags = InputHint | StateHint; XmbSetWMProperties(dpy, ret, "Captive ctwm", NULL, NULL, 0, NULL, &wmhints, NULL); XChangeProperty(dpy, ret, XA_WM_CTWM_ROOT, XA_WINDOW, 32, PropModeReplace, (unsigned char *) &ret, 1); XSelectInput(dpy, ret, StructureNotifyMask); XMapWindow(dpy, ret); return (ret); } /* * Return true if a window is not set to override_redirect ("Hey! WM! * Leave those wins alone!"), and isn't unmapped. Used during startup to * fake mapping for wins that should be up. */ static bool MappedNotOverride(Window w) { XWindowAttributes wa; XGetWindowAttributes(dpy, w, &wa); return ((wa.map_state != IsUnmapped) && (wa.override_redirect != True)); }