diff options
Diffstat (limited to 'xorg-server/hw/xwin/winmultiwindowwm.c')
| -rw-r--r-- | xorg-server/hw/xwin/winmultiwindowwm.c | 1440 |
1 files changed, 1440 insertions, 0 deletions
diff --git a/xorg-server/hw/xwin/winmultiwindowwm.c b/xorg-server/hw/xwin/winmultiwindowwm.c new file mode 100644 index 000000000..5401ecdee --- /dev/null +++ b/xorg-server/hw/xwin/winmultiwindowwm.c @@ -0,0 +1,1440 @@ +/* + *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved. + * + *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 XFREE86 PROJECT 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. + * + *Except as contained in this notice, the name of the XFree86 Project + *shall not be used in advertising or otherwise to promote the sale, use + *or other dealings in this Software without prior written authorization + *from the XFree86 Project. + * + * Authors: Kensuke Matsuzaki + */ + +/* X headers */ +#ifdef HAVE_XWIN_CONFIG_H +#include <xwin-config.h> +#endif +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#ifdef __CYGWIN__ +#include <sys/select.h> +#endif +#include <fcntl.h> +#include <setjmp.h> +#define HANDLE void * +#include <pthread.h> +#undef HANDLE +#include <X11/X.h> +#include <X11/Xatom.h> +#include <X11/Xlib.h> +#include <X11/Xlocale.h> +#include <X11/Xproto.h> +#include <X11/Xutil.h> +#include <X11/cursorfont.h> + +/* Windows headers */ +#ifdef __CYGWIN__ +/* Fixups to prevent collisions between Windows and X headers */ +#define ATOM DWORD + +#include <windows.h> +#else +#include <Xwindows.h> +#endif + +/* Local headers */ +#include "objbase.h" +#include "ddraw.h" +#include "winwindow.h" +#ifdef XWIN_MULTIWINDOWEXTWM +#include "windowswmstr.h" +#endif + +extern void winDebug(const char *format, ...); + +#ifndef CYGDEBUG +#define CYGDEBUG NO +#endif + +/* + * Constant defines + */ + +#define WIN_CONNECT_RETRIES 5 +#define WIN_CONNECT_DELAY 5 +#ifdef HAS_DEVWINDOWS +# define WIN_MSG_QUEUE_FNAME "/dev/windows" +#endif +#define WIN_JMP_OKAY 0 +#define WIN_JMP_ERROR_IO 2 + + +/* + * Local structures + */ + +typedef struct _WMMsgNodeRec { + winWMMessageRec msg; + struct _WMMsgNodeRec *pNext; +} WMMsgNodeRec, *WMMsgNodePtr; + +typedef struct _WMMsgQueueRec { + struct _WMMsgNodeRec *pHead; + struct _WMMsgNodeRec *pTail; + pthread_mutex_t pmMutex; + pthread_cond_t pcNotEmpty; + int nQueueSize; +} WMMsgQueueRec, *WMMsgQueuePtr; + +typedef struct _WMInfo { + Display *pDisplay; + WMMsgQueueRec wmMsgQueue; + Atom atmWmProtos; + Atom atmWmDelete; + Atom atmPrivMap; + Bool fAllowOtherWM; +} WMInfoRec, *WMInfoPtr; + +typedef struct _WMProcArgRec { + DWORD dwScreen; + WMInfoPtr pWMInfo; + pthread_mutex_t *ppmServerStarted; +} WMProcArgRec, *WMProcArgPtr; + +typedef struct _XMsgProcArgRec { + Display *pDisplay; + DWORD dwScreen; + WMInfoPtr pWMInfo; + pthread_mutex_t *ppmServerStarted; + HWND hwndScreen; +} XMsgProcArgRec, *XMsgProcArgPtr; + + +/* + * References to external symbols + */ + +extern char *display; +extern void ErrorF (const char* /*f*/, ...); + + +/* + * Prototypes for local functions + */ + +static void +PushMessage (WMMsgQueuePtr pQueue, WMMsgNodePtr pNode); + +static WMMsgNodePtr +PopMessage (WMMsgQueuePtr pQueue, WMInfoPtr pWMInfo); + +static Bool +InitQueue (WMMsgQueuePtr pQueue); + +static void +GetWindowName (Display * pDpy, Window iWin, char **ppName); + +static int +SendXMessage (Display *pDisplay, Window iWin, Atom atmType, long nData); + +static void +UpdateName (WMInfoPtr pWMInfo, Window iWindow); + +static void* +winMultiWindowWMProc (void* pArg); + +static int +winMultiWindowWMErrorHandler (Display *pDisplay, XErrorEvent *pErr); + +static int +winMultiWindowWMIOErrorHandler (Display *pDisplay); + +static void * +winMultiWindowXMsgProc (void *pArg); + +static int +winMultiWindowXMsgProcErrorHandler (Display *pDisplay, XErrorEvent *pErr); + +static int +winMultiWindowXMsgProcIOErrorHandler (Display *pDisplay); + +static int +winRedirectErrorHandler (Display *pDisplay, XErrorEvent *pErr); + +static void +winInitMultiWindowWM (WMInfoPtr pWMInfo, WMProcArgPtr pProcArg); + +#if 0 +static void +PreserveWin32Stack(WMInfoPtr pWMInfo, Window iWindow, UINT direction); +#endif + +static Bool +CheckAnotherWindowManager (Display *pDisplay, DWORD dwScreen); + + +/* + * Local globals + */ + +static jmp_buf g_jmpWMEntry; +static jmp_buf g_jmpXMsgProcEntry; +static Bool g_shutdown = FALSE; +static Bool redirectError = FALSE; +static Bool g_fAnotherWMRunnig = FALSE; + +/* + * PushMessage - Push a message onto the queue + */ + +static void +PushMessage (WMMsgQueuePtr pQueue, WMMsgNodePtr pNode) +{ + + /* Lock the queue mutex */ + pthread_mutex_lock (&pQueue->pmMutex); + + pNode->pNext = NULL; + + if (pQueue->pTail != NULL) + { + pQueue->pTail->pNext = pNode; + } + pQueue->pTail = pNode; + + if (pQueue->pHead == NULL) + { + pQueue->pHead = pNode; + } + + +#if 0 + switch (pNode->msg.msg) + { + case WM_WM_MOVE: + ErrorF ("\tWM_WM_MOVE\n"); + break; + case WM_WM_SIZE: + ErrorF ("\tWM_WM_SIZE\n"); + break; + case WM_WM_RAISE: + ErrorF ("\tWM_WM_RAISE\n"); + break; + case WM_WM_LOWER: + ErrorF ("\tWM_WM_LOWER\n"); + break; + case WM_WM_MAP: + ErrorF ("\tWM_WM_MAP\n"); + break; + case WM_WM_UNMAP: + ErrorF ("\tWM_WM_UNMAP\n"); + break; + case WM_WM_KILL: + ErrorF ("\tWM_WM_KILL\n"); + break; + case WM_WM_ACTIVATE: + ErrorF ("\tWM_WM_ACTIVATE\n"); + break; + default: + ErrorF ("\tUnknown Message.\n"); + break; + } +#endif + + /* Increase the count of elements in the queue by one */ + ++(pQueue->nQueueSize); + + /* Release the queue mutex */ + pthread_mutex_unlock (&pQueue->pmMutex); + + /* Signal that the queue is not empty */ + pthread_cond_signal (&pQueue->pcNotEmpty); +} + + +#if CYGMULTIWINDOW_DEBUG +/* + * QueueSize - Return the size of the queue + */ + +static int +QueueSize (WMMsgQueuePtr pQueue) +{ + WMMsgNodePtr pNode; + int nSize = 0; + + /* Loop through all elements in the queue */ + for (pNode = pQueue->pHead; pNode != NULL; pNode = pNode->pNext) + ++nSize; + + return nSize; +} +#endif + + +/* + * PopMessage - Pop a message from the queue + */ + +static WMMsgNodePtr +PopMessage (WMMsgQueuePtr pQueue, WMInfoPtr pWMInfo) +{ + WMMsgNodePtr pNode; + + /* Lock the queue mutex */ + pthread_mutex_lock (&pQueue->pmMutex); + + /* Wait for --- */ + while (pQueue->pHead == NULL) + { + pthread_cond_wait (&pQueue->pcNotEmpty, &pQueue->pmMutex); + } + + pNode = pQueue->pHead; + if (pQueue->pHead != NULL) + { + pQueue->pHead = pQueue->pHead->pNext; + } + + if (pQueue->pTail == pNode) + { + pQueue->pTail = NULL; + } + + /* Drop the number of elements in the queue by one */ + --(pQueue->nQueueSize); + +#if CYGMULTIWINDOW_DEBUG + ErrorF ("Queue Size %d %d\n", pQueue->nQueueSize, QueueSize(pQueue)); +#endif + + /* Release the queue mutex */ + pthread_mutex_unlock (&pQueue->pmMutex); + + return pNode; +} + + +#if 0 +/* + * HaveMessage - + */ + +static Bool +HaveMessage (WMMsgQueuePtr pQueue, UINT msg, Window iWindow) +{ + WMMsgNodePtr pNode; + + for (pNode = pQueue->pHead; pNode != NULL; pNode = pNode->pNext) + { + if (pNode->msg.msg==msg && pNode->msg.iWindow==iWindow) + return True; + } + + return False; +} +#endif + + +/* + * InitQueue - Initialize the Window Manager message queue + */ + +static +Bool +InitQueue (WMMsgQueuePtr pQueue) +{ + /* Check if the pQueue pointer is NULL */ + if (pQueue == NULL) + { + ErrorF ("InitQueue - pQueue is NULL. Exiting.\n"); + return FALSE; + } + + /* Set the head and tail to NULL */ + pQueue->pHead = NULL; + pQueue->pTail = NULL; + + /* There are no elements initially */ + pQueue->nQueueSize = 0; + +#if CYGMULTIWINDOW_DEBUG + ErrorF ("InitQueue - Queue Size %d %d\n", pQueue->nQueueSize, + QueueSize(pQueue)); +#endif + + ErrorF ("InitQueue - Calling pthread_mutex_init\n"); + + /* Create synchronization objects */ + pthread_mutex_init (&pQueue->pmMutex, NULL); + + ErrorF ("InitQueue - pthread_mutex_init returned\n"); + ErrorF ("InitQueue - Calling pthread_cond_init\n"); + + pthread_cond_init (&pQueue->pcNotEmpty, NULL); + + ErrorF ("InitQueue - pthread_cond_init returned\n"); + + return TRUE; +} + + +/* + * GetWindowName - Retrieve the title of an X Window + */ + +static void +GetWindowName (Display *pDisplay, Window iWin, char **ppName) +{ + int nResult, nNum; + char **ppList; + XTextProperty xtpName; + +#if CYGMULTIWINDOW_DEBUG + ErrorF ("GetWindowName\n"); +#endif + + /* Intialize ppName to NULL */ + *ppName = NULL; + + /* Try to get --- */ + nResult = XGetWMName (pDisplay, iWin, &xtpName); + if (!nResult || !xtpName.value || !xtpName.nitems) + { +#if CYGMULTIWINDOW_DEBUG + ErrorF ("GetWindowName - XGetWMName failed. No name.\n"); +#endif + return; + } + + /* */ + if (xtpName.encoding == XA_STRING) + { + /* */ + if (xtpName.value) + { + int size = xtpName.nitems * (xtpName.format >> 3); + *ppName = malloc(size + 1); + strncpy(*ppName, xtpName.value, size); + (*ppName)[size] = 0; + XFree (xtpName.value); + } + +#if CYGMULTIWINDOW_DEBUG + ErrorF ("GetWindowName - XA_STRING %s\n", *ppName); +#endif + } + else + { + if (XmbTextPropertyToTextList (pDisplay, &xtpName, &ppList, &nNum) >= Success && nNum > 0 && *ppList) + { + *ppName = strdup (*ppList); + XFreeStringList (ppList); + } + XFree (xtpName.value); + +#if CYGMULTIWINDOW_DEBUG + ErrorF ("GetWindowName - %s %s\n", + XGetAtomName (pDisplay, xtpName.encoding), *ppName); +#endif + } + +#if CYGMULTIWINDOW_DEBUG + ErrorF ("GetWindowName - Returning\n"); +#endif +} + + +/* + * Send a message to the X server from the WM thread + */ + +static int +SendXMessage (Display *pDisplay, Window iWin, Atom atmType, long nData) +{ + XEvent e; + + /* Prepare the X event structure */ + e.type = ClientMessage; + e.xclient.window = iWin; + e.xclient.message_type = atmType; + e.xclient.format = 32; + e.xclient.data.l[0] = nData; + e.xclient.data.l[1] = CurrentTime; + + /* Send the event to X */ + return XSendEvent (pDisplay, iWin, False, NoEventMask, &e); +} + + +/* + * Updates the name of a HWND according to its X WM_NAME property + */ + +static void +UpdateName (WMInfoPtr pWMInfo, Window iWindow) +{ + char *pszName; + Atom atmType; + int fmtRet; + unsigned long items, remain; + HWND *retHwnd, hWnd; + XWindowAttributes attr; + + hWnd = 0; + + /* See if we can get the cached HWND for this window... */ + if (XGetWindowProperty (pWMInfo->pDisplay, + iWindow, + pWMInfo->atmPrivMap, + 0, + 1, + False, + XA_INTEGER,//pWMInfo->atmPrivMap, + &atmType, + &fmtRet, + &items, + &remain, + (unsigned char **) &retHwnd) == Success) + { + if (retHwnd) + { + hWnd = *retHwnd; + XFree (retHwnd); + } + } + + /* Some sanity checks */ + if (!hWnd) return; + if (!IsWindow (hWnd)) return; + + /* Set the Windows window name */ + GetWindowName (pWMInfo->pDisplay, iWindow, &pszName); + if (pszName) + { + /* Get the window attributes */ + XGetWindowAttributes (pWMInfo->pDisplay, + iWindow, + &attr); + if (!attr.override_redirect) + { + SetWindowText (hWnd, pszName); + winUpdateIcon (iWindow); + } + + free (pszName); + } +} + + +#if 0 +/* + * Fix up any differences between the X11 and Win32 window stacks + * starting at the window passed in + */ +static void +PreserveWin32Stack(WMInfoPtr pWMInfo, Window iWindow, UINT direction) +{ + Atom atmType; + int fmtRet; + unsigned long items, remain; + HWND hWnd, *retHwnd; + DWORD myWinProcID, winProcID; + Window xWindow; + WINDOWPLACEMENT wndPlace; + + hWnd = NULL; + /* See if we can get the cached HWND for this window... */ + if (XGetWindowProperty (pWMInfo->pDisplay, + iWindow, + pWMInfo->atmPrivMap, + 0, + 1, + False, + XA_INTEGER,//pWMInfo->atmPrivMap, + &atmType, + &fmtRet, + &items, + &remain, + (unsigned char **) &retHwnd) == Success) + { + if (retHwnd) + { + hWnd = *retHwnd; + XFree (retHwnd); + } + } + + if (!hWnd) return; + + GetWindowThreadProcessId (hWnd, &myWinProcID); + hWnd = GetNextWindow (hWnd, direction); + + while (hWnd) { + GetWindowThreadProcessId (hWnd, &winProcID); + if (winProcID == myWinProcID) + { + wndPlace.length = sizeof(WINDOWPLACEMENT); + GetWindowPlacement (hWnd, &wndPlace); + if ( !(wndPlace.showCmd==SW_HIDE || + wndPlace.showCmd==SW_MINIMIZE) ) + { + xWindow = (Window)GetProp (hWnd, WIN_WID_PROP); + if (xWindow) + { + if (direction==GW_HWNDPREV) + XRaiseWindow (pWMInfo->pDisplay, xWindow); + else + XLowerWindow (pWMInfo->pDisplay, xWindow); + } + } + } + hWnd = GetNextWindow(hWnd, direction); + } +} +#endif /* PreserveWin32Stack */ + + +/* + * winMultiWindowWMProc + */ + +static void * +winMultiWindowWMProc (void *pArg) +{ + WMProcArgPtr pProcArg = (WMProcArgPtr)pArg; + WMInfoPtr pWMInfo = pProcArg->pWMInfo; + + /* Initialize the Window Manager */ + winInitMultiWindowWM (pWMInfo, pProcArg); + +#if CYGMULTIWINDOW_DEBUG + ErrorF ("winMultiWindowWMProc ()\n"); +#endif + + /* Loop until we explicity break out */ + for (;;) + { + WMMsgNodePtr pNode; + + if(g_fAnotherWMRunnig)/* Another Window manager exists. */ + { + Sleep (1000); + continue; + } + + /* Pop a message off of our queue */ + pNode = PopMessage (&pWMInfo->wmMsgQueue, pWMInfo); + if (pNode == NULL) + { + /* Bail if PopMessage returns without a message */ + /* NOTE: Remember that PopMessage is a blocking function. */ + ErrorF ("winMultiWindowWMProc - Queue is Empty? Exiting.\n"); + pthread_exit (NULL); + } + +#if CYGMULTIWINDOW_DEBUG + ErrorF ("winMultiWindowWMProc - %d ms MSG: %d ID: %d\n", + GetTickCount (), (int)pNode->msg.msg, (int)pNode->msg.dwID); +#endif + + /* Branch on the message type */ + switch (pNode->msg.msg) + { +#if 0 + case WM_WM_MOVE: + ErrorF ("\tWM_WM_MOVE\n"); + break; + + case WM_WM_SIZE: + ErrorF ("\tWM_WM_SIZE\n"); + break; +#endif + + case WM_WM_RAISE: +#if CYGMULTIWINDOW_DEBUG + ErrorF ("\tWM_WM_RAISE\n"); +#endif + /* Raise the window */ + XRaiseWindow (pWMInfo->pDisplay, pNode->msg.iWindow); +#if 0 + PreserveWin32Stack (pWMInfo, pNode->msg.iWindow, GW_HWNDPREV); +#endif + break; + + case WM_WM_LOWER: +#if CYGMULTIWINDOW_DEBUG + ErrorF ("\tWM_WM_LOWER\n"); +#endif + + /* Lower the window */ + XLowerWindow (pWMInfo->pDisplay, pNode->msg.iWindow); + break; + + case WM_WM_MAP: +#if CYGMULTIWINDOW_DEBUG + ErrorF ("\tWM_WM_MAP\n"); +#endif + /* Put a note as to the HWND associated with this Window */ + XChangeProperty (pWMInfo->pDisplay, + pNode->msg.iWindow, + pWMInfo->atmPrivMap, + XA_INTEGER,//pWMInfo->atmPrivMap, + 32, + PropModeReplace, + (unsigned char *) &(pNode->msg.hwndWindow), + 1); + UpdateName (pWMInfo, pNode->msg.iWindow); + winUpdateIcon (pNode->msg.iWindow); +#if 0 + /* Handles the case where there are AOT windows above it in W32 */ + PreserveWin32Stack (pWMInfo, pNode->msg.iWindow, GW_HWNDPREV); +#endif + break; + + case WM_WM_UNMAP: +#if CYGMULTIWINDOW_DEBUG + ErrorF ("\tWM_WM_UNMAP\n"); +#endif + + /* Unmap the window */ + XUnmapWindow (pWMInfo->pDisplay, pNode->msg.iWindow); + break; + + case WM_WM_KILL: +#if CYGMULTIWINDOW_DEBUG + ErrorF ("\tWM_WM_KILL\n"); +#endif + { + int i, n, found = 0; + Atom *protocols; + + /* --- */ + if (XGetWMProtocols (pWMInfo->pDisplay, + pNode->msg.iWindow, + &protocols, + &n)) + { + for (i = 0; i < n; ++i) + if (protocols[i] == pWMInfo->atmWmDelete) + ++found; + + XFree (protocols); + } + + /* --- */ + if (found) + SendXMessage (pWMInfo->pDisplay, + pNode->msg.iWindow, + pWMInfo->atmWmProtos, + pWMInfo->atmWmDelete); + else + XKillClient (pWMInfo->pDisplay, + pNode->msg.iWindow); + } + break; + + case WM_WM_ACTIVATE: +#if CYGMULTIWINDOW_DEBUG + ErrorF ("\tWM_WM_ACTIVATE\n"); +#endif + + /* Set the input focus */ + XSetInputFocus (pWMInfo->pDisplay, + pNode->msg.iWindow, + RevertToPointerRoot, + CurrentTime); + break; + + case WM_WM_NAME_EVENT: + UpdateName (pWMInfo, pNode->msg.iWindow); + break; + + case WM_WM_HINTS_EVENT: + winUpdateIcon (pNode->msg.iWindow); + break; + + case WM_WM_CHANGE_STATE: + /* Minimize the window in Windows */ + winMinimizeWindow (pNode->msg.iWindow); + break; + + default: + ErrorF ("winMultiWindowWMProc - Unknown Message. Exiting.\n"); + pthread_exit (NULL); + break; + } + + /* Free the retrieved message */ + free (pNode); + + /* Flush any pending events on our display */ + XFlush (pWMInfo->pDisplay); + } + + /* Free the condition variable */ + pthread_cond_destroy (&pWMInfo->wmMsgQueue.pcNotEmpty); + + /* Free the mutex variable */ + pthread_mutex_destroy (&pWMInfo->wmMsgQueue.pmMutex); + + /* Free the passed-in argument */ + free (pProcArg); + +#if CYGMULTIWINDOW_DEBUG + ErrorF("-winMultiWindowWMProc ()\n"); +#endif +} + + +/* + * X message procedure + */ + +static void * +winMultiWindowXMsgProc (void *pArg) +{ + winWMMessageRec msg; + XMsgProcArgPtr pProcArg = (XMsgProcArgPtr) pArg; + char pszDisplay[512]; + int iRetries; + XEvent event; + Atom atmWmName; + Atom atmWmHints; + Atom atmWmChange; + int iReturn; + XIconSize *xis; + + ErrorF ("winMultiWindowXMsgProc - Hello\n"); + + /* Check that argument pointer is not invalid */ + if (pProcArg == NULL) + { + ErrorF ("winMultiWindowXMsgProc - pProcArg is NULL. Exiting.\n"); + pthread_exit (NULL); + } + + ErrorF ("winMultiWindowXMsgProc - Calling pthread_mutex_lock ()\n"); + + /* Grab the server started mutex - pause until we get it */ + iReturn = pthread_mutex_lock (pProcArg->ppmServerStarted); + if (iReturn != 0) + { + ErrorF ("winMultiWindowXMsgProc - pthread_mutex_lock () failed: %d. " + "Exiting.\n", + iReturn); + pthread_exit (NULL); + } + + ErrorF ("winMultiWindowXMsgProc - pthread_mutex_lock () returned.\n"); + + /* Allow multiple threads to access Xlib */ + if (XInitThreads () == 0) + { + ErrorF ("winMultiWindowXMsgProc - XInitThreads () failed. Exiting.\n"); + pthread_exit (NULL); + } + + /* See if X supports the current locale */ + if (XSupportsLocale () == False) + { + ErrorF ("winMultiWindowXMsgProc - Locale not supported by X. " + "Exiting.\n"); + pthread_exit (NULL); + } + + /* Release the server started mutex */ + pthread_mutex_unlock (pProcArg->ppmServerStarted); + + ErrorF ("winMultiWindowXMsgProc - pthread_mutex_unlock () returned.\n"); + + /* Set jump point for IO Error exits */ + iReturn = setjmp (g_jmpXMsgProcEntry); + + /* Check if we should continue operations */ + if (iReturn != WIN_JMP_ERROR_IO + && iReturn != WIN_JMP_OKAY) + { + /* setjmp returned an unknown value, exit */ + ErrorF ("winInitMultiWindowXMsgProc - setjmp returned: %d. Exiting.\n", + iReturn); + pthread_exit (NULL); + } + else if (iReturn == WIN_JMP_ERROR_IO) + { + ErrorF ("winInitMultiWindowXMsgProc - Caught IO Error. Exiting.\n"); + pthread_exit (NULL); + } + + /* Install our error handler */ + XSetErrorHandler (winMultiWindowXMsgProcErrorHandler); + XSetIOErrorHandler (winMultiWindowXMsgProcIOErrorHandler); + + /* Setup the display connection string x */ + snprintf (pszDisplay, + 512, "127.0.0.1:%s.%d", display, (int)pProcArg->dwScreen); + + /* Print the display connection string */ + ErrorF ("winMultiWindowXMsgProc - DISPLAY=%s\n", pszDisplay); + + /* Initialize retry count */ + iRetries = 0; + + /* Open the X display */ + do + { + /* Try to open the display */ + pProcArg->pDisplay = XOpenDisplay (pszDisplay); + if (pProcArg->pDisplay == NULL) + { + ErrorF ("winMultiWindowXMsgProc - Could not open display, try: %d, " + "sleeping: %d\n\f", + iRetries + 1, WIN_CONNECT_DELAY); + ++iRetries; + sleep (WIN_CONNECT_DELAY); + continue; + } + else + break; + } + while (pProcArg->pDisplay == NULL && iRetries < WIN_CONNECT_RETRIES); + + /* Make sure that the display opened */ + if (pProcArg->pDisplay == NULL) + { + ErrorF ("winMultiWindowXMsgProc - Failed opening the display. " + "Exiting.\n"); + pthread_exit (NULL); + } + + ErrorF ("winMultiWindowXMsgProc - XOpenDisplay () returned and " + "successfully opened the display.\n"); + + /* Check if another window manager is already running */ + if (pProcArg->pWMInfo->fAllowOtherWM) + { + g_fAnotherWMRunnig = CheckAnotherWindowManager (pProcArg->pDisplay, pProcArg->dwScreen); + } else { + redirectError = FALSE; + XSetErrorHandler (winRedirectErrorHandler); + XSelectInput(pProcArg->pDisplay, + RootWindow (pProcArg->pDisplay, pProcArg->dwScreen), + SubstructureNotifyMask | ButtonPressMask); + XSync (pProcArg->pDisplay, 0); + XSetErrorHandler (winMultiWindowXMsgProcErrorHandler); + if (redirectError) + { + ErrorF ("winMultiWindowXMsgProc - " + "another window manager is running. Exiting.\n"); + pthread_exit (NULL); + } + g_fAnotherWMRunnig = FALSE; + } + + /* Set up the supported icon sizes */ + xis = XAllocIconSize (); + if (xis) + { + xis->min_width = xis->min_height = 16; + xis->max_width = xis->max_height = 48; + xis->width_inc = xis->height_inc = 16; + XSetIconSizes (pProcArg->pDisplay, + RootWindow (pProcArg->pDisplay, pProcArg->dwScreen), + xis, + 1); + XFree (xis); + } + + atmWmName = XInternAtom (pProcArg->pDisplay, + "WM_NAME", + False); + atmWmHints = XInternAtom (pProcArg->pDisplay, + "WM_HINTS", + False); + atmWmChange = XInternAtom (pProcArg->pDisplay, + "WM_CHANGE_STATE", + False); + + /* Loop until we explicitly break out */ + while (1) + { + if (g_shutdown) + break; + + if (pProcArg->pWMInfo->fAllowOtherWM && !XPending (pProcArg->pDisplay)) + { + if (CheckAnotherWindowManager (pProcArg->pDisplay, pProcArg->dwScreen)) + { + if (!g_fAnotherWMRunnig) + { + g_fAnotherWMRunnig = TRUE; + SendMessage(*(HWND*)pProcArg->hwndScreen, WM_UNMANAGE, 0, 0); + } + } + else + { + if (g_fAnotherWMRunnig) + { + g_fAnotherWMRunnig = FALSE; + SendMessage(*(HWND*)pProcArg->hwndScreen, WM_MANAGE, 0, 0); + } + } + Sleep (500); + continue; + } + + /* Fetch next event */ + XNextEvent (pProcArg->pDisplay, &event); + + /* Branch on event type */ + if (event.type == CreateNotify) + { + XWindowAttributes attr; + + XSelectInput (pProcArg->pDisplay, + event.xcreatewindow.window, + PropertyChangeMask); + + /* Get the window attributes */ + XGetWindowAttributes (pProcArg->pDisplay, + event.xcreatewindow.window, + &attr); + + if (!attr.override_redirect) + XSetWindowBorderWidth(pProcArg->pDisplay, + event.xcreatewindow.window, + 0); + } + else if (event.type == PropertyNotify + && event.xproperty.atom == atmWmName) + { + memset (&msg, 0, sizeof (msg)); + + msg.msg = WM_WM_NAME_EVENT; + msg.iWindow = event.xproperty.window; + + /* Other fields ignored */ + winSendMessageToWM (pProcArg->pWMInfo, &msg); + } + else if (event.type == PropertyNotify + && event.xproperty.atom == atmWmHints) + { + memset (&msg, 0, sizeof (msg)); + + msg.msg = WM_WM_HINTS_EVENT; + msg.iWindow = event.xproperty.window; + + /* Other fields ignored */ + winSendMessageToWM (pProcArg->pWMInfo, &msg); + } + else if (event.type == ClientMessage + && event.xclient.message_type == atmWmChange + && event.xclient.data.l[0] == IconicState) + { + ErrorF ("winMultiWindowXMsgProc - WM_CHANGE_STATE - IconicState\n"); + + memset (&msg, 0, sizeof (msg)); + + msg.msg = WM_WM_CHANGE_STATE; + msg.iWindow = event.xclient.window; + + winSendMessageToWM (pProcArg->pWMInfo, &msg); + } + } + + XCloseDisplay (pProcArg->pDisplay); + pthread_exit (NULL); + +} + + +/* + * winInitWM - Entry point for the X server to spawn + * the Window Manager thread. Called from + * winscrinit.c/winFinishScreenInitFB (). + */ + +Bool +winInitWM (void **ppWMInfo, + pthread_t *ptWMProc, + pthread_t *ptXMsgProc, + pthread_mutex_t *ppmServerStarted, + int dwScreen, + HWND hwndScreen, + BOOL allowOtherWM) +{ + WMProcArgPtr pArg = (WMProcArgPtr) malloc (sizeof(WMProcArgRec)); + WMInfoPtr pWMInfo = (WMInfoPtr) malloc (sizeof(WMInfoRec)); + XMsgProcArgPtr pXMsgArg = (XMsgProcArgPtr) malloc (sizeof(XMsgProcArgRec)); + + /* Bail if the input parameters are bad */ + if (pArg == NULL || pWMInfo == NULL) + { + ErrorF ("winInitWM - malloc failed.\n"); + return FALSE; + } + + /* Zero the allocated memory */ + ZeroMemory (pArg, sizeof (WMProcArgRec)); + ZeroMemory (pWMInfo, sizeof (WMInfoRec)); + ZeroMemory (pXMsgArg, sizeof (XMsgProcArgRec)); + + /* Set a return pointer to the Window Manager info structure */ + *ppWMInfo = pWMInfo; + pWMInfo->fAllowOtherWM = allowOtherWM; + + /* Setup the argument structure for the thread function */ + pArg->dwScreen = dwScreen; + pArg->pWMInfo = pWMInfo; + pArg->ppmServerStarted = ppmServerStarted; + + /* Intialize the message queue */ + if (!InitQueue (&pWMInfo->wmMsgQueue)) + { + ErrorF ("winInitWM - InitQueue () failed.\n"); + return FALSE; + } + + /* Spawn a thread for the Window Manager */ + if (pthread_create (ptWMProc, NULL, winMultiWindowWMProc, pArg)) + { + /* Bail if thread creation failed */ + ErrorF ("winInitWM - pthread_create failed for Window Manager.\n"); + return FALSE; + } + + /* Spawn the XNextEvent thread, will send messages to WM */ + pXMsgArg->dwScreen = dwScreen; + pXMsgArg->pWMInfo = pWMInfo; + pXMsgArg->ppmServerStarted = ppmServerStarted; + pXMsgArg->hwndScreen = hwndScreen; + if (pthread_create (ptXMsgProc, NULL, winMultiWindowXMsgProc, pXMsgArg)) + { + /* Bail if thread creation failed */ + ErrorF ("winInitWM - pthread_create failed on XMSG.\n"); + return FALSE; + } + +#if CYGDEBUG || YES + winDebug ("winInitWM - Returning.\n"); +#endif + + return TRUE; +} + + +/* + * Window manager thread - setup + */ + +static void +winInitMultiWindowWM (WMInfoPtr pWMInfo, WMProcArgPtr pProcArg) +{ + int iRetries = 0; + char pszDisplay[512]; + int iReturn; + + ErrorF ("winInitMultiWindowWM - Hello\n"); + + /* Check that argument pointer is not invalid */ + if (pProcArg == NULL) + { + ErrorF ("winInitMultiWindowWM - pProcArg is NULL. Exiting.\n"); + pthread_exit (NULL); + } + + ErrorF ("winInitMultiWindowWM - Calling pthread_mutex_lock ()\n"); + + /* Grab our garbage mutex to satisfy pthread_cond_wait */ + iReturn = pthread_mutex_lock (pProcArg->ppmServerStarted); + if (iReturn != 0) + { + ErrorF ("winInitMultiWindowWM - pthread_mutex_lock () failed: %d. " + "Exiting.\n", + iReturn); + pthread_exit (NULL); + } + + ErrorF ("winInitMultiWindowWM - pthread_mutex_lock () returned.\n"); + + /* Allow multiple threads to access Xlib */ + if (XInitThreads () == 0) + { + ErrorF ("winInitMultiWindowWM - XInitThreads () failed. Exiting.\n"); + pthread_exit (NULL); + } + + /* See if X supports the current locale */ + if (XSupportsLocale () == False) + { + ErrorF ("winInitMultiWindowWM - Locale not supported by X. Exiting.\n"); + pthread_exit (NULL); + } + + /* Release the server started mutex */ + pthread_mutex_unlock (pProcArg->ppmServerStarted); + + ErrorF ("winInitMultiWindowWM - pthread_mutex_unlock () returned.\n"); + + /* Set jump point for IO Error exits */ + iReturn = setjmp (g_jmpWMEntry); + + /* Check if we should continue operations */ + if (iReturn != WIN_JMP_ERROR_IO + && iReturn != WIN_JMP_OKAY) + { + /* setjmp returned an unknown value, exit */ + ErrorF ("winInitMultiWindowWM - setjmp returned: %d. Exiting.\n", + iReturn); + pthread_exit (NULL); + } + else if (iReturn == WIN_JMP_ERROR_IO) + { + ErrorF ("winInitMultiWindowWM - Caught IO Error. Exiting.\n"); + pthread_exit (NULL); + } + + /* Install our error handler */ + XSetErrorHandler (winMultiWindowWMErrorHandler); + XSetIOErrorHandler (winMultiWindowWMIOErrorHandler); + + /* Setup the display connection string x */ + snprintf (pszDisplay, + 512, + "127.0.0.1:%s.%d", + display, + (int) pProcArg->dwScreen); + + /* Print the display connection string */ + ErrorF ("winInitMultiWindowWM - DISPLAY=%s\n", pszDisplay); + + /* Open the X display */ + do + { + /* Try to open the display */ + pWMInfo->pDisplay = XOpenDisplay (pszDisplay); + if (pWMInfo->pDisplay == NULL) + { + ErrorF ("winInitMultiWindowWM - Could not open display, try: %d, " + "sleeping: %d\n\f", + iRetries + 1, WIN_CONNECT_DELAY); + ++iRetries; + sleep (WIN_CONNECT_DELAY); + continue; + } + else + break; + } + while (pWMInfo->pDisplay == NULL && iRetries < WIN_CONNECT_RETRIES); + + /* Make sure that the display opened */ + if (pWMInfo->pDisplay == NULL) + { + ErrorF ("winInitMultiWindowWM - Failed opening the display. " + "Exiting.\n"); + pthread_exit (NULL); + } + + ErrorF ("winInitMultiWindowWM - XOpenDisplay () returned and " + "successfully opened the display.\n"); + + + /* Create some atoms */ + pWMInfo->atmWmProtos = XInternAtom (pWMInfo->pDisplay, + "WM_PROTOCOLS", + False); + pWMInfo->atmWmDelete = XInternAtom (pWMInfo->pDisplay, + "WM_DELETE_WINDOW", + False); +#ifdef XWIN_MULTIWINDOWEXTWM + pWMInfo->atmPrivMap = XInternAtom (pWMInfo->pDisplay, + WINDOWSWM_NATIVE_HWND, + False); +#endif + + + if (1) { + Cursor cursor = XCreateFontCursor (pWMInfo->pDisplay, XC_left_ptr); + if (cursor) + { + XDefineCursor (pWMInfo->pDisplay, DefaultRootWindow(pWMInfo->pDisplay), cursor); + XFreeCursor (pWMInfo->pDisplay, cursor); + } + } +} + + +/* + * winSendMessageToWM - Send a message from the X thread to the WM thread + */ + +void +winSendMessageToWM (void *pWMInfo, winWMMessagePtr pMsg) +{ + WMMsgNodePtr pNode; + +#if CYGMULTIWINDOW_DEBUG + ErrorF ("winSendMessageToWM ()\n"); +#endif + + pNode = (WMMsgNodePtr)malloc(sizeof(WMMsgNodeRec)); + if (pNode != NULL) + { + memcpy (&pNode->msg, pMsg, sizeof(winWMMessageRec)); + PushMessage (&((WMInfoPtr)pWMInfo)->wmMsgQueue, pNode); + } +} + + +/* + * Window manager error handler + */ + +static int +winMultiWindowWMErrorHandler (Display *pDisplay, XErrorEvent *pErr) +{ + char pszErrorMsg[100]; + + if (pErr->request_code == X_ChangeWindowAttributes + && pErr->error_code == BadAccess) + { + ErrorF ("winMultiWindowWMErrorHandler - ChangeWindowAttributes " + "BadAccess.\n"); + return 0; + } + + XGetErrorText (pDisplay, + pErr->error_code, + pszErrorMsg, + sizeof (pszErrorMsg)); + ErrorF ("winMultiWindowWMErrorHandler - ERROR: %s\n", pszErrorMsg); + + return 0; +} + + +/* + * Window manager IO error handler + */ + +static int +winMultiWindowWMIOErrorHandler (Display *pDisplay) +{ + ErrorF ("\nwinMultiWindowWMIOErrorHandler!\n\n"); + + if (g_shutdown) + pthread_exit(NULL); + + /* Restart at the main entry point */ + longjmp (g_jmpWMEntry, WIN_JMP_ERROR_IO); + + return 0; +} + + +/* + * X message procedure error handler + */ + +static int +winMultiWindowXMsgProcErrorHandler (Display *pDisplay, XErrorEvent *pErr) +{ + char pszErrorMsg[100]; + + XGetErrorText (pDisplay, + pErr->error_code, + pszErrorMsg, + sizeof (pszErrorMsg)); + ErrorF ("winMultiWindowXMsgProcErrorHandler - ERROR: %s\n", pszErrorMsg); + + return 0; +} + + +/* + * X message procedure IO error handler + */ + +static int +winMultiWindowXMsgProcIOErrorHandler (Display *pDisplay) +{ + ErrorF ("\nwinMultiWindowXMsgProcIOErrorHandler!\n\n"); + + /* Restart at the main entry point */ + longjmp (g_jmpXMsgProcEntry, WIN_JMP_ERROR_IO); + + return 0; +} + + +/* + * Catch RedirectError to detect other window manager running + */ + +static int +winRedirectErrorHandler (Display *pDisplay, XErrorEvent *pErr) +{ + redirectError = TRUE; + return 0; +} + + +/* + * Check if another window manager is running + */ + +static Bool +CheckAnotherWindowManager (Display *pDisplay, DWORD dwScreen) +{ + redirectError = FALSE; + XSetErrorHandler (winRedirectErrorHandler); + XSelectInput(pDisplay, RootWindow (pDisplay, dwScreen), + // SubstructureNotifyMask | ButtonPressMask + ColormapChangeMask | EnterWindowMask | PropertyChangeMask | + SubstructureRedirectMask | KeyPressMask | + ButtonPressMask | ButtonReleaseMask); + XSync (pDisplay, 0); + XSetErrorHandler (winMultiWindowXMsgProcErrorHandler); + XSelectInput(pDisplay, RootWindow (pDisplay, dwScreen), + SubstructureNotifyMask); + XSync (pDisplay, 0); + if (redirectError) + { + //ErrorF ("CheckAnotherWindowManager() - another window manager is running. Exiting.\n"); + return TRUE; + } + else + { + return FALSE; + } +} + +/* + * Notify the MWM thread we're exiting and not to reconnect + */ + +void +winDeinitMultiWindowWM () +{ + ErrorF ("winDeinitMultiWindowWM - Noting shutdown in progress\n"); + g_shutdown = TRUE; +} |