diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/xwin/winclipboardwrappers.c')
| -rwxr-xr-x | nx-X11/programs/Xserver/hw/xwin/winclipboardwrappers.c | 544 |
1 files changed, 0 insertions, 544 deletions
diff --git a/nx-X11/programs/Xserver/hw/xwin/winclipboardwrappers.c b/nx-X11/programs/Xserver/hw/xwin/winclipboardwrappers.c deleted file mode 100755 index 8801f6c42..000000000 --- a/nx-X11/programs/Xserver/hw/xwin/winclipboardwrappers.c +++ /dev/null @@ -1,544 +0,0 @@ -/* - *Copyright (C) 2003-2004 Harold L Hunt II 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 HAROLD L HUNT II 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 Harold L Hunt II - *shall not be used in advertising or otherwise to promote the sale, use - *or other dealings in this Software without prior written authorization - *from Harold L Hunt II. - * - * Authors: Harold L Hunt II - */ - -#ifdef HAVE_XWIN_CONFIG_H -#include <xwin-config.h> -#endif -#include "win.h" -#include "dixstruct.h" -#include <X11/Xatom.h> - - -/* - * Constants - */ - -#define CLIP_NUM_SELECTIONS 2 -#define CLIP_OWN_PRIMARY 0 -#define CLIP_OWN_CLIPBOARD 1 - - -/* - * Local function prototypes - */ - -DISPATCH_PROC(winProcEstablishConnection); -DISPATCH_PROC(winProcQueryTree); -DISPATCH_PROC(winProcSetSelectionOwner); - - -/* - * References to external symbols - */ - -extern Bool g_fUnicodeSupport; -extern int g_iNumScreens; -extern unsigned int g_uiAuthDataLen; -extern char *g_pAuthData; -extern Bool g_fXdmcpEnabled; -extern Bool g_fClipboardLaunched; -extern Bool g_fClipboardStarted; -extern Bool g_fClipboard; -extern Window g_iClipboardWindow; -extern Atom g_atomLastOwnedSelection; -extern HWND g_hwndClipboard; - -extern winDispatchProcPtr winProcEstablishConnectionOrig; -extern winDispatchProcPtr winProcQueryTreeOrig; -extern winDispatchProcPtr winProcSetSelectionOwnerOrig; - - -/* - * Wrapper for internal QueryTree function. - * Hides the clipboard client when it is the only client remaining. - */ - -int -winProcQueryTree (ClientPtr client) -{ - int iReturn; - - /* - * This procedure is only used for initialization. - * We can unwrap the original procedure at this point - * so that this function is no longer called until the - * server resets and the function is wrapped again. - */ - ProcVector[X_QueryTree] = winProcQueryTreeOrig; - - /* - * Call original function and bail if it fails. - * NOTE: We must do this first, since we need XdmcpOpenDisplay - * to be called before we initialize our clipboard client. - */ - iReturn = (*winProcQueryTreeOrig) (client); - if (iReturn != 0) - { - ErrorF ("winProcQueryTree - ProcQueryTree failed, bailing.\n"); - return iReturn; - } - - /* Make errors more obvious */ - winProcQueryTreeOrig = NULL; - - /* Do nothing if clipboard is not enabled */ - if (!g_fClipboard) - { - ErrorF ("winProcQueryTree - Clipboard is not enabled, " - "returning.\n"); - return iReturn; - } - - /* If the clipboard client has already been started, abort */ - if (g_fClipboardLaunched) - { - ErrorF ("winProcQueryTree - Clipboard client already " - "launched, returning.\n"); - return iReturn; - } - - /* Startup the clipboard client if clipboard mode is being used */ - if (g_fXdmcpEnabled && g_fClipboard) - { - /* - * NOTE: The clipboard client is started here for a reason: - * 1) Assume you are using XDMCP (e.g. XWin -query %hostname%) - * 2) If the clipboard client attaches during X Server startup, - * then it becomes the "magic client" that causes the X Server - * to reset if it exits. - * 3) XDMCP calls KillAllClients when it starts up. - * 4) The clipboard client is a client, so it is killed. - * 5) The clipboard client is the "magic client", so the X Server - * resets itself. - * 6) This repeats ad infinitum. - * 7) We avoid this by waiting until at least one client (could - * be XDM, could be another client) connects, which makes it - * almost certain that the clipboard client will not connect - * until after XDM when using XDMCP. - * 8) Unfortunately, there is another problem. - * 9) XDM walks the list of windows with XQueryTree, - * killing any client it finds with a window. - * 10)Thus, when using XDMCP we wait until the first call - * to ProcQueryTree before we startup the clipboard client. - * This should prevent XDM from finding the clipboard client, - * since it has not yet created a window. - * 11)Startup when not using XDMCP is handled in - * winProcEstablishConnection. - */ - - /* Create the clipboard client thread */ - if (!winInitClipboard ()) - { - ErrorF ("winProcQueryTree - winClipboardInit " - "failed.\n"); - return iReturn; - } - - ErrorF ("winProcQueryTree - winInitClipboard returned.\n"); - } - - /* Flag that clipboard client has been launched */ - g_fClipboardLaunched = TRUE; - - return iReturn; -} - - -/* - * Wrapper for internal EstablishConnection function. - * Initializes internal clients that must not be started until - * an external client has connected. - */ - -int -winProcEstablishConnection (ClientPtr client) -{ - int iReturn; - static int s_iCallCount = 0; - static unsigned long s_ulServerGeneration = 0; - - ErrorF ("winProcEstablishConnection - Hello\n"); - - /* Do nothing if clipboard is not enabled */ - if (!g_fClipboard) - { - ErrorF ("winProcEstablishConnection - Clipboard is not enabled, " - "returning.\n"); - - /* Unwrap the original function, call it, and return */ - InitialVector[2] = winProcEstablishConnectionOrig; - iReturn = (*winProcEstablishConnectionOrig) (client); - winProcEstablishConnectionOrig = NULL; - return iReturn; - } - - /* Watch for server reset */ - if (s_ulServerGeneration != serverGeneration) - { - /* Save new generation number */ - s_ulServerGeneration = serverGeneration; - - /* Reset call count */ - s_iCallCount = 0; - } - - /* Increment call count */ - ++s_iCallCount; - - /* Wait for second call when Xdmcp is enabled */ - if (g_fXdmcpEnabled - && !g_fClipboardLaunched - && s_iCallCount < 4) - { - ErrorF ("winProcEstablishConnection - Xdmcp enabled, waiting to " - "start clipboard client until fourth call.\n"); - return (*winProcEstablishConnectionOrig) (client); - } - - /* - * This procedure is only used for initialization. - * We can unwrap the original procedure at this point - * so that this function is no longer called until the - * server resets and the function is wrapped again. - */ - InitialVector[2] = winProcEstablishConnectionOrig; - - /* - * Call original function and bail if it fails. - * NOTE: We must do this first, since we need XdmcpOpenDisplay - * to be called before we initialize our clipboard client. - */ - iReturn = (*winProcEstablishConnectionOrig) (client); - if (iReturn != 0) - { - ErrorF ("winProcEstablishConnection - ProcEstablishConnection " - "failed, bailing.\n"); - return iReturn; - } - - /* Clear original function pointer */ - winProcEstablishConnectionOrig = NULL; - - /* If the clipboard client has already been started, abort */ - if (g_fClipboardLaunched) - { - ErrorF ("winProcEstablishConnection - Clipboard client already " - "launched, returning.\n"); - return iReturn; - } - - /* Startup the clipboard client if clipboard mode is being used */ - if (g_fClipboard) - { - /* - * NOTE: The clipboard client is started here for a reason: - * 1) Assume you are using XDMCP (e.g. XWin -query %hostname%) - * 2) If the clipboard client attaches during X Server startup, - * then it becomes the "magic client" that causes the X Server - * to reset if it exits. - * 3) XDMCP calls KillAllClients when it starts up. - * 4) The clipboard client is a client, so it is killed. - * 5) The clipboard client is the "magic client", so the X Server - * resets itself. - * 6) This repeats ad infinitum. - * 7) We avoid this by waiting until at least one client (could - * be XDM, could be another client) connects, which makes it - * almost certain that the clipboard client will not connect - * until after XDM when using XDMCP. - * 8) Unfortunately, there is another problem. - * 9) XDM walks the list of windows with XQueryTree, - * killing any client it finds with a window. - * 10)Thus, when using XDMCP we wait until the second call - * to ProcEstablishCeonnection before we startup the clipboard - * client. This should prevent XDM from finding the clipboard - * client, since it has not yet created a window. - */ - - /* Create the clipboard client thread */ - if (!winInitClipboard ()) - { - ErrorF ("winProcEstablishConnection - winClipboardInit " - "failed.\n"); - return iReturn; - } - - ErrorF ("winProcEstablishConnection - winInitClipboard returned.\n"); - } - - /* Flag that clipboard client has been launched */ - g_fClipboardLaunched = TRUE; - - return iReturn; -} - - -/* - * Wrapper for internal SetSelectionOwner function. - * Grabs ownership of Windows clipboard when X11 clipboard owner changes. - */ - -int -winProcSetSelectionOwner (ClientPtr client) -{ - int i; - DrawablePtr pDrawable; - WindowPtr pWindow = None; - Bool fOwnedToNotOwned = FALSE; - static Window s_iOwners[CLIP_NUM_SELECTIONS] = {None}; - static unsigned long s_ulServerGeneration = 0; - REQUEST(xSetSelectionOwnerReq); - - REQUEST_SIZE_MATCH(xSetSelectionOwnerReq); - -#if 0 - ErrorF ("winProcSetSelectionOwner - Hello.\n"); -#endif - - /* Watch for server reset */ - if (s_ulServerGeneration != serverGeneration) - { - /* Save new generation number */ - s_ulServerGeneration = serverGeneration; - - /* Initialize static variables */ - for (i = 0; i < CLIP_NUM_SELECTIONS; ++i) - s_iOwners[i] = None; - } - - /* Abort if clipboard not completely initialized yet */ - if (!g_fClipboardStarted) - { - ErrorF ("winProcSetSelectionOwner - Clipboard not yet started, " - "aborting.\n"); - goto winProcSetSelectionOwner_Done; - } - - /* Grab window if we have one */ - if (None != stuff->window) - { - /* Grab the Window from the request */ - pWindow = (WindowPtr) SecurityLookupWindow (stuff->window, client, - SecurityReadAccess); - if (!pWindow) - { - ErrorF ("winProcSetSelectionOwner - Found BadWindow, aborting.\n"); - goto winProcSetSelectionOwner_Done; - } - } - - /* Now we either have a valid window or None */ - - /* Save selection owners for monitored selections, ignore other selections */ - if (XA_PRIMARY == stuff->selection) - { - /* Look for owned -> not owned transition */ - if (None == stuff->window - && None != s_iOwners[CLIP_OWN_PRIMARY]) - { - fOwnedToNotOwned = TRUE; - -#if 0 - ErrorF ("winProcSetSelectionOwner - PRIMARY - Going from " - "owned to not owned.\n"); -#endif - - /* Adjust last owned selection */ - if (None != s_iOwners[CLIP_OWN_CLIPBOARD]) - g_atomLastOwnedSelection = MakeAtom ("CLIPBOARD", 9, TRUE); - else - g_atomLastOwnedSelection = None; - } - - /* Save new selection owner or None */ - s_iOwners[CLIP_OWN_PRIMARY] = stuff->window; - -#if 0 - ErrorF ("winProcSetSelectionOwner - PRIMARY - Now owned by: %d\n", - stuff->window); -#endif - } - else if (MakeAtom ("CLIPBOARD", 9, TRUE) == stuff->selection) - { - /* Look for owned -> not owned transition */ - if (None == stuff->window - && None != s_iOwners[CLIP_OWN_CLIPBOARD]) - { - fOwnedToNotOwned = TRUE; - -#if 0 - ErrorF ("winProcSetSelectionOwner - CLIPBOARD - Going from " - "owned to not owned.\n"); -#endif - - /* Adjust last owned selection */ - if (None != s_iOwners[CLIP_OWN_PRIMARY]) - g_atomLastOwnedSelection = XA_PRIMARY; - else - g_atomLastOwnedSelection = None; - } - - /* Save new selection owner or None */ - s_iOwners[CLIP_OWN_CLIPBOARD] = stuff->window; - -#if 0 - ErrorF ("winProcSetSelectionOwner - CLIPBOARD - Now owned by: %d\n", - stuff->window); -#endif - } - else - goto winProcSetSelectionOwner_Done; - - /* - * At this point, if one of the selections is still owned by the - * clipboard manager then it should be marked as unowned since - * we will be taking ownership of the Win32 clipboard. - */ - if (g_iClipboardWindow == s_iOwners[CLIP_OWN_PRIMARY]) - s_iOwners[CLIP_OWN_PRIMARY] = None; - if (g_iClipboardWindow == s_iOwners[CLIP_OWN_CLIPBOARD]) - s_iOwners[CLIP_OWN_CLIPBOARD] = None; - - /* - * Handle case when selection is being disowned, - * WM_DRAWCLIPBOARD did not do the disowning, - * both monitored selections are no longer owned, - * an owned to not owned transition was detected, - * and we currently own the Win32 clipboard. - */ - if (None == stuff->window - && g_iClipboardWindow != client->lastDrawableID - && (None == s_iOwners[CLIP_OWN_PRIMARY] - || g_iClipboardWindow == s_iOwners[CLIP_OWN_PRIMARY]) - && (None == s_iOwners[CLIP_OWN_CLIPBOARD] - || g_iClipboardWindow == s_iOwners[CLIP_OWN_CLIPBOARD]) - && fOwnedToNotOwned - && g_hwndClipboard != NULL - && g_hwndClipboard == GetClipboardOwner ()) - { -#if 0 - ErrorF ("winProcSetSelectionOwner - We currently own the " - "clipboard and neither the PRIMARY nor the CLIPBOARD " - "selections are owned, releasing ownership of Win32 " - "clipboard.\n"); -#endif - - /* Release ownership of the Windows clipboard */ - OpenClipboard (NULL); - EmptyClipboard (); - CloseClipboard (); - - /* Clear X selection ownership (might still be marked as us owning) */ - s_iOwners[CLIP_OWN_PRIMARY] = None; - s_iOwners[CLIP_OWN_CLIPBOARD] = None; - - goto winProcSetSelectionOwner_Done; - } - - /* Abort if no window at this point */ - if (None == stuff->window) - { -#if 0 - ErrorF ("winProcSetSelectionOwner - No window, returning.\n"); -#endif - goto winProcSetSelectionOwner_Done; - } - - /* Abort if invalid selection */ - if (!ValidAtom (stuff->selection)) - { - ErrorF ("winProcSetSelectionOwner - Found BadAtom, aborting.\n"); - goto winProcSetSelectionOwner_Done; - } - - /* Cast Window to Drawable */ - pDrawable = (DrawablePtr) pWindow; - - /* Abort if clipboard manager is owning the selection */ - if (pDrawable->id == g_iClipboardWindow) - { -#if 0 - ErrorF ("winProcSetSelectionOwner - We changed ownership, " - "aborting.\n"); -#endif - goto winProcSetSelectionOwner_Done; - } - - /* Abort if root window is taking ownership */ - if (pDrawable->id == 0) - { - ErrorF ("winProcSetSelectionOwner - Root window taking ownership, " - "aborting\n"); - goto winProcSetSelectionOwner_Done; - } - - /* Close clipboard if we have it open already */ - if (GetOpenClipboardWindow () == g_hwndClipboard) - { - CloseClipboard (); - } - - /* Access the Windows clipboard */ - if (!OpenClipboard (g_hwndClipboard)) - { - ErrorF ("winProcSetSelectionOwner - OpenClipboard () failed: %08x\n", - (int) GetLastError ()); - goto winProcSetSelectionOwner_Done; - } - - /* Take ownership of the Windows clipboard */ - if (!EmptyClipboard ()) - { - ErrorF ("winProcSetSelectionOwner - EmptyClipboard () failed: %08x\n", - (int) GetLastError ()); - goto winProcSetSelectionOwner_Done; - } - - /* Advertise Unicode if we support it */ - if (g_fUnicodeSupport) - SetClipboardData (CF_UNICODETEXT, NULL); - - /* Always advertise regular text */ - SetClipboardData (CF_TEXT, NULL); - - /* Save handle to last owned selection */ - g_atomLastOwnedSelection = stuff->selection; - - /* Release the clipboard */ - if (!CloseClipboard ()) - { - ErrorF ("winProcSetSelectionOwner - CloseClipboard () failed: " - "%08x\n", - (int) GetLastError ()); - goto winProcSetSelectionOwner_Done; - } - - winProcSetSelectionOwner_Done: - return (*winProcSetSelectionOwnerOrig) (client); -} |