diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/xwin/winclipboardwndproc.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/xwin/winclipboardwndproc.c | 585 |
1 files changed, 0 insertions, 585 deletions
diff --git a/nx-X11/programs/Xserver/hw/xwin/winclipboardwndproc.c b/nx-X11/programs/Xserver/hw/xwin/winclipboardwndproc.c deleted file mode 100644 index a006b46d3..000000000 --- a/nx-X11/programs/Xserver/hw/xwin/winclipboardwndproc.c +++ /dev/null @@ -1,585 +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 <sys/types.h> -#include <sys/time.h> -#include "winclipboard.h" - - -/* - * Constants - */ - -#define WIN_CLIPBOARD_PROP "cyg_clipboard_prop" -#define WIN_POLL_TIMEOUT 1 - - -/* - * References to external symbols - */ - -extern Bool g_fUseUnicode; -extern Bool g_fUnicodeSupport; -extern void *g_pClipboardDisplay; -extern Window g_iClipboardWindow; -extern Atom g_atomLastOwnedSelection; - - -/* - * Local function prototypes - */ - -static Bool -winProcessXEventsTimeout (HWND hwnd, int iWindow, Display *pDisplay, - Bool fUseUnicode, int iTimeoutSec); - - -/* - * Process X events up to specified timeout - */ - -static int -winProcessXEventsTimeout (HWND hwnd, int iWindow, Display *pDisplay, - Bool fUseUnicode, int iTimeoutSec) -{ - int iConnNumber; - struct timeval tv; - int iReturn; - DWORD dwStopTime = (GetTickCount () / 1000) + iTimeoutSec; - - /* We need to ensure that all pending events are processed */ - XSync (pDisplay, FALSE); - - /* Get our connection number */ - iConnNumber = ConnectionNumber (pDisplay); - - /* Loop for X events */ - while (1) - { - fd_set fdsRead; - - /* Setup the file descriptor set */ - FD_ZERO (&fdsRead); - FD_SET (iConnNumber, &fdsRead); - - /* Adjust timeout */ - tv.tv_sec = dwStopTime - (GetTickCount () / 1000); - tv.tv_usec = 0; - - /* Break out if no time left */ - if (tv.tv_sec < 0) - return WIN_XEVENTS_SUCCESS; - - /* Wait for a Windows event or an X event */ - iReturn = select (iConnNumber + 1,/* Highest fds number */ - &fdsRead, /* Read mask */ - NULL, /* No write mask */ - NULL, /* No exception mask */ - &tv); /* No timeout */ - if (iReturn <= 0) - { - ErrorF ("winProcessXEventsTimeout - Call to select () failed: %d. " - "Bailing.\n", iReturn); - break; - } - - /* Branch on which descriptor became active */ - if (FD_ISSET (iConnNumber, &fdsRead)) - { - /* Process X events */ - /* Exit when we see that server is shutting down */ - iReturn = winClipboardFlushXEvents (hwnd, - iWindow, - pDisplay, - fUseUnicode); - if (WIN_XEVENTS_NOTIFY == iReturn - || WIN_XEVENTS_CONVERT == iReturn) - { - /* Bail out if convert or notify processed */ - return iReturn; - } - } - } - - return WIN_XEVENTS_SUCCESS; -} - - -/* - * Process a given Windows message - */ - -LRESULT CALLBACK -winClipboardWindowProc (HWND hwnd, UINT message, - WPARAM wParam, LPARAM lParam) -{ - static HWND s_hwndNextViewer; - static Bool s_fCBCInitialized; - - /* Branch on message type */ - switch (message) - { - case WM_DESTROY: - { - winDebug ("winClipboardWindowProc - WM_DESTROY\n"); - - /* Remove ourselves from the clipboard chain */ - ChangeClipboardChain (hwnd, s_hwndNextViewer); - - s_hwndNextViewer = NULL; - - PostQuitMessage (0); - } - return 0; - - - case WM_CREATE: - { - winDebug ("winClipboardWindowProc - WM_CREATE\n"); - - /* Add ourselves to the clipboard viewer chain */ - s_hwndNextViewer = SetClipboardViewer (hwnd); - if (s_hwndNextViewer == hwnd) - { - s_hwndNextViewer = NULL; - winErrorFVerb (1, "winClipboardWindowProc - WM_CREATE: " - "attempted to set next window to ourselves."); - } - } - return 0; - - - case WM_CHANGECBCHAIN: - { - static Bool s_fProcessingChangeCBChain = FALSE; - winDebug ("winClipboardWindowProc - WM_CHANGECBCHAIN: wParam(%x) " - "lParam(%x) s_hwndNextViewer(%x)\n", - wParam, lParam, s_hwndNextViewer); - - - /* - * We've occasionally seen a loop in the clipboard chain. Break - * it on the first hint of recursion. - */ - if (! s_fProcessingChangeCBChain) - { - s_fProcessingChangeCBChain = TRUE; - } - else - { - winErrorFVerb (1, "winClipboardWindowProc - WM_CHANGECBCHAIN - " - "Nested calls detected. Bailing.\n"); - winDebug ("winClipboardWindowProc - WM_CHANGECBCHAIN: Exit\n"); - return 0; - } - - if ((HWND) wParam == s_hwndNextViewer) - { - s_hwndNextViewer = (HWND) lParam; - if (s_hwndNextViewer == hwnd) - { - s_hwndNextViewer = NULL; - winErrorFVerb (1, "winClipboardWindowProc - WM_CHANGECBCHAIN: " - "attempted to set next window to ourselves."); - } - } - else if (s_hwndNextViewer) - SendMessage (s_hwndNextViewer, message, - wParam, lParam); - - s_fProcessingChangeCBChain = FALSE; - } - winDebug ("winClipboardWindowProc - WM_CHANGECBCHAIN: Exit\n"); - return 0; - - case WM_WM_REINIT: - { - /* Ensure that we're in the clipboard chain. Some apps, - * WinXP's remote desktop for one, don't play nice with the - * chain. This message is called whenever we receive a - * WM_ACTIVATEAPP message to ensure that we continue to - * receive clipboard messages. - * - * It might be possible to detect if we're still in the chain - * by calling SendMessage (GetClipboardViewer(), - * WM_DRAWCLIPBOARD, 0, 0); and then seeing if we get the - * WM_DRAWCLIPBOARD message. That, however, might be more - * expensive than just putting ourselves back into the chain. - */ - - winDebug ("winClipboardWindowProc - WM_WM_REINIT: Enter\n"); - if (hwnd != GetClipboardViewer ()) - { - winDebug (" WM_WM_REINIT: Replacing us(%x) with %x at head " - "of chain\n", hwnd, s_hwndNextViewer); - s_fCBCInitialized = FALSE; - ChangeClipboardChain (hwnd, s_hwndNextViewer); - s_hwndNextViewer = NULL; - s_fCBCInitialized = FALSE; - winDebug (" WM_WM_REINIT: Putting us back at head of chain.\n"); - s_hwndNextViewer = SetClipboardViewer (hwnd); - if (s_hwndNextViewer == hwnd) - { - s_hwndNextViewer = NULL; - winErrorFVerb (1, "winClipboardWindowProc - WM_WM_REINIT: " - "attempted to set next window to ourselves.\n"); - } - } - else - { - winDebug (" WM_WM_REINIT: already at head of viewer chain.\n"); - } - } - winDebug ("winClipboardWindowProc - WM_WM_REINIT: Exit\n"); - return 0; - - - case WM_DRAWCLIPBOARD: - { - static Bool s_fProcessingDrawClipboard = FALSE; - Display *pDisplay = g_pClipboardDisplay; - Window iWindow = g_iClipboardWindow; - int iReturn; - - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD: Enter\n"); - - /* - * We've occasionally seen a loop in the clipboard chain. Break - * it on the first hint of recursion. - */ - if (! s_fProcessingDrawClipboard) - { - s_fProcessingDrawClipboard = TRUE; - } - else - { - winErrorFVerb (1, "winClipboardWindowProc - WM_DRAWCLIPBOARD - " - "Nested calls detected. Bailing.\n"); - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD: Exit\n"); - return 0; - } - - /* Pass the message on the next window in the clipboard viewer chain */ - if (s_hwndNextViewer) - SendMessage (s_hwndNextViewer, message, 0, 0); - - /* Bail on first message */ - if (!s_fCBCInitialized) - { - s_fCBCInitialized = TRUE; - s_fProcessingDrawClipboard = FALSE; - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD: Exit\n"); - return 0; - } - - /* - * NOTE: We cannot bail out when NULL == GetClipboardOwner () - * because some applications deal with the clipboard in a manner - * that causes the clipboard owner to be NULL when they are in - * fact taking ownership. One example of this is the Win32 - * native compile of emacs. - */ - - /* Bail when we still own the clipboard */ - if (hwnd == GetClipboardOwner ()) - { - - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD - " - "We own the clipboard, returning.\n"); - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD: Exit\n"); - s_fProcessingDrawClipboard = FALSE; - return 0; - } - - /* - * Do not take ownership of the X11 selections when something - * other than CF_TEXT or CF_UNICODETEXT has been copied - * into the Win32 clipboard. - */ - if (!IsClipboardFormatAvailable (CF_TEXT) - && !IsClipboardFormatAvailable (CF_UNICODETEXT)) - { - - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD - " - "Clipboard does not contain CF_TEXT nor " - "CF_UNICODETEXT.\n"); - - /* - * We need to make sure that the X Server has processed - * previous XSetSelectionOwner messages. - */ - XSync (pDisplay, FALSE); - - winDebug("winClipboardWindowProc - XSync done.\n"); - - /* Release PRIMARY selection if owned */ - iReturn = XGetSelectionOwner (pDisplay, XA_PRIMARY); - if (iReturn == g_iClipboardWindow) - { - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD - " - "PRIMARY selection is owned by us.\n"); - XSetSelectionOwner (pDisplay, - XA_PRIMARY, - None, - CurrentTime); - } - else if (BadWindow == iReturn || BadAtom == iReturn) - winErrorFVerb (1, "winClipboardWindowProc - WM_DRAWCLIPBOARD - " - "XGetSelection failed for PRIMARY: %d\n", iReturn); - - /* Release CLIPBOARD selection if owned */ - iReturn = XGetSelectionOwner (pDisplay, - XInternAtom (pDisplay, - "CLIPBOARD", - False)); - if (iReturn == g_iClipboardWindow) - { - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD - " - "CLIPBOARD selection is owned by us.\n"); - XSetSelectionOwner (pDisplay, - XInternAtom (pDisplay, - "CLIPBOARD", - False), - None, - CurrentTime); - } - else if (BadWindow == iReturn || BadAtom == iReturn) - winErrorFVerb (1, "winClipboardWindowProc - WM_DRAWCLIPBOARD - " - "XGetSelection failed for CLIPBOARD: %d\n", iReturn); - - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD: Exit\n"); - s_fProcessingDrawClipboard = FALSE; - return 0; - } - - /* Reassert ownership of PRIMARY */ - iReturn = XSetSelectionOwner (pDisplay, - XA_PRIMARY, - iWindow, - CurrentTime); - if (iReturn == BadAtom || iReturn == BadWindow) - { - winErrorFVerb (1, "winClipboardWindowProc - WM_DRAWCLIPBOARD - " - "Could not reassert ownership of PRIMARY\n"); - } - else - { - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD - " - "Reasserted ownership of PRIMARY\n"); - } - - /* Reassert ownership of the CLIPBOARD */ - iReturn = XSetSelectionOwner (pDisplay, - XInternAtom (pDisplay, - "CLIPBOARD", - False), - iWindow, - CurrentTime); - if (iReturn == BadAtom || iReturn == BadWindow) - { - winErrorFVerb (1, "winClipboardWindowProc - WM_DRAWCLIPBOARD - " - "Could not reassert ownership of CLIPBOARD\n"); - } - else - { - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD - " - "Reasserted ownership of CLIPBOARD\n"); - } - - /* Flush the pending SetSelectionOwner event now */ - XFlush (pDisplay); - - s_fProcessingDrawClipboard = FALSE; - } - winDebug ("winClipboardWindowProc - WM_DRAWCLIPBOARD: Exit\n"); - return 0; - - - case WM_DESTROYCLIPBOARD: - /* - * NOTE: Intentionally do nothing. - * Changes in the Win32 clipboard are handled by WM_DRAWCLIPBOARD - * above. We only process this message to conform to the specs - * for delayed clipboard rendering in Win32. You might think - * that we need to release ownership of the X11 selections, but - * we do not, because a WM_DRAWCLIPBOARD message will closely - * follow this message and reassert ownership of the X11 - * selections, handling the issue for us. - */ - return 0; - - - case WM_RENDERFORMAT: - case WM_RENDERALLFORMATS: - { - int iReturn; - Display *pDisplay = g_pClipboardDisplay; - Window iWindow = g_iClipboardWindow; - Bool fConvertToUnicode; - - winDebug ("winClipboardWindowProc - WM_RENDER*FORMAT - Hello.\n"); - - /* Flag whether to convert to Unicode or not */ - if (message == WM_RENDERALLFORMATS) - fConvertToUnicode = FALSE; - else - fConvertToUnicode = g_fUnicodeSupport && (CF_UNICODETEXT == wParam); - - /* Request the selection contents */ - iReturn = XConvertSelection (pDisplay, - g_atomLastOwnedSelection, - XInternAtom (pDisplay, - "COMPOUND_TEXT", False), - XInternAtom (pDisplay, - "CYGX_CUT_BUFFER", False), - iWindow, - CurrentTime); - if (iReturn == BadAtom || iReturn == BadWindow) - { - winErrorFVerb (1, "winClipboardWindowProc - WM_RENDER*FORMAT - " - "XConvertSelection () failed\n"); - break; - } - - /* Special handling for WM_RENDERALLFORMATS */ - if (message == WM_RENDERALLFORMATS) - { - /* We must open and empty the clipboard */ - - /* Close clipboard if we have it open already */ - if (GetOpenClipboardWindow () == hwnd) - { - CloseClipboard (); - } - - if (!OpenClipboard (hwnd)) - { - winErrorFVerb (1, "winClipboardWindowProc - WM_RENDER*FORMATS - " - "OpenClipboard () failed: %08x\n", - GetLastError ()); - break; - } - - if (!EmptyClipboard ()) - { - winErrorFVerb (1, "winClipboardWindowProc - WM_RENDER*FORMATS - " - "EmptyClipboard () failed: %08x\n", - GetLastError ()); - break; - } - } - - /* Process the SelectionNotify event */ - iReturn = winProcessXEventsTimeout (hwnd, - iWindow, - pDisplay, - fConvertToUnicode, - WIN_POLL_TIMEOUT); - if (WIN_XEVENTS_CONVERT == iReturn) - { - /* - * The selection was offered for conversion first, so we have - * to process a second SelectionNotify event to get the actual - * data in the selection. - */ - iReturn = winProcessXEventsTimeout (hwnd, - iWindow, - pDisplay, - fConvertToUnicode, - WIN_POLL_TIMEOUT); - } - - /* - * The last of the up-to two calls to winProcessXEventsTimeout - * from above had better have seen a notify event, or else we - * are dealing with a buggy or old X11 app. In these cases we - * have to paste some fake data to the Win32 clipboard to - * satisfy the requirement that we write something to it. - */ - if (WIN_XEVENTS_NOTIFY != iReturn) - { - /* Paste no data, to satisfy required call to SetClipboardData */ - if (g_fUnicodeSupport) - SetClipboardData (CF_UNICODETEXT, NULL); - SetClipboardData (CF_TEXT, NULL); - } - - /* Special handling for WM_RENDERALLFORMATS */ - if (message == WM_RENDERALLFORMATS) - { - /* We must close the clipboard */ - - if (!CloseClipboard ()) - { - winErrorFVerb (1, "winClipboardWindowProc - WM_RENDERALLFORMATS - " - "CloseClipboard () failed: %08x\n", - GetLastError ()); - break; - } - } - - winDebug ("winClipboardWindowProc - WM_RENDER*FORMAT - Returning.\n"); - return 0; - } - } - - /* Let Windows perform default processing for unhandled messages */ - return DefWindowProc (hwnd, message, wParam, lParam); -} - - -/* - * Process any pending Windows messages - */ - -BOOL -winClipboardFlushWindowsMessageQueue (HWND hwnd) -{ - MSG msg; - - /* Flush the messaging window queue */ - /* NOTE: Do not pass the hwnd of our messaging window to PeekMessage, - * as this will filter out many non-window-specific messages that - * are sent to our thread, such as WM_QUIT. - */ - while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) - { - /* Dispatch the message if not WM_QUIT */ - if (msg.message == WM_QUIT) - return FALSE; - else - DispatchMessage (&msg); - } - - return TRUE; -} |