xenocara/xserver/hw/xwin/winclipboard/xevents.c

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/*
*Copyright (C) 2003-2004 Harold L Hunt II All Rights Reserved.
*Copyright (C) Colin Harrison 2005-2008
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*
*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 the copyright holder(s)
*and author(s) 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 copyright holder(s) and author(s).
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*
* Authors: Harold L Hunt II
* Colin Harrison
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*/
#ifdef HAVE_XWIN_CONFIG_H
#include <xwin-config.h>
#endif
/*
* Including any server header might define the macro _XSERVER64 on 64 bit machines.
* That macro must _NOT_ be defined for Xlib client code, otherwise bad things happen.
* So let's undef that macro if necessary.
*/
#ifdef _XSERVER64
#undef _XSERVER64
#endif
#include <limits.h>
#include <wchar.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/extensions/Xfixes.h>
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#include "winclipboard.h"
#include "internal.h"
/*
* Constants
*/
#define CLIP_NUM_SELECTIONS 2
#define CLIP_OWN_NONE -1
#define CLIP_OWN_PRIMARY 0
#define CLIP_OWN_CLIPBOARD 1
/*
* Global variables
*/
extern int xfixes_event_base;
Bool fPrimarySelection = TRUE;
/*
* Local variables
*/
static Window s_iOwners[CLIP_NUM_SELECTIONS] = { None, None };
static const char *szSelectionNames[CLIP_NUM_SELECTIONS] =
{ "PRIMARY", "CLIPBOARD" };
static unsigned int lastOwnedSelectionIndex = CLIP_OWN_NONE;
static void
MonitorSelection(XFixesSelectionNotifyEvent * e, unsigned int i)
{
/* Look for owned -> not owned transition */
if (None == e->owner && None != s_iOwners[i]) {
unsigned int other_index;
winDebug("MonitorSelection - %s - Going from owned to not owned.\n",
szSelectionNames[i]);
/* If this selection is not owned, the other monitored selection must be the most
recently owned, if it is owned at all */
if (i == CLIP_OWN_PRIMARY)
other_index = CLIP_OWN_CLIPBOARD;
if (i == CLIP_OWN_CLIPBOARD)
other_index = CLIP_OWN_PRIMARY;
if (None != s_iOwners[other_index])
lastOwnedSelectionIndex = other_index;
else
lastOwnedSelectionIndex = CLIP_OWN_NONE;
}
/* Save last owned selection */
if (None != e->owner) {
lastOwnedSelectionIndex = i;
}
/* Save new selection owner or None */
s_iOwners[i] = e->owner;
winDebug("MonitorSelection - %s - Now owned by XID %lx\n",
szSelectionNames[i], e->owner);
}
Atom
winClipboardGetLastOwnedSelectionAtom(ClipboardAtoms *atoms)
{
if (lastOwnedSelectionIndex == CLIP_OWN_NONE)
return None;
if (lastOwnedSelectionIndex == CLIP_OWN_PRIMARY)
return XA_PRIMARY;
if (lastOwnedSelectionIndex == CLIP_OWN_CLIPBOARD)
return atoms->atomClipboard;
return None;
}
void
winClipboardInitMonitoredSelections(void)
{
/* Initialize static variables */
int i;
for (i = 0; i < CLIP_NUM_SELECTIONS; ++i)
s_iOwners[i] = None;
lastOwnedSelectionIndex = CLIP_OWN_NONE;
}
static int
winClipboardSelectionNotifyTargets(HWND hwnd, Window iWindow, Display *pDisplay, ClipboardConversionData *data, ClipboardAtoms *atoms)
{
Atom type;
int format;
unsigned long nitems;
unsigned long after;
Atom *prop;
/* Retrieve the selection data and delete the property */
int iReturn = XGetWindowProperty(pDisplay,
iWindow,
atoms->atomLocalProperty,
0,
INT_MAX,
True,
AnyPropertyType,
&type,
&format,
&nitems,
&after,
(unsigned char **)&prop);
if (iReturn != Success) {
ErrorF("winClipboardFlushXEvents - SelectionNotify - "
"XGetWindowProperty () failed, aborting: %d\n", iReturn);
} else {
int i;
data->targetList = malloc((nitems+1)*sizeof(Atom));
for (i = 0; i < nitems; i++)
{
Atom atom = prop[i];
char *pszAtomName = XGetAtomName(pDisplay, atom);
data->targetList[i] = atom;
winDebug("winClipboardFlushXEvents - SelectionNotify - target[%d] %ld = %s\n", i, atom, pszAtomName);
XFree(pszAtomName);
}
data->targetList[nitems] = 0;
XFree(prop);
}
return WIN_XEVENTS_NOTIFY_TARGETS;
}
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/*
* Process any pending X events
*/
int
winClipboardFlushXEvents(HWND hwnd,
Window iWindow, Display * pDisplay, ClipboardConversionData *data, ClipboardAtoms *atoms)
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{
Atom atomClipboard = atoms->atomClipboard;
Atom atomLocalProperty = atoms->atomLocalProperty;
Atom atomUTF8String = atoms->atomUTF8String;
Atom atomCompoundText = atoms->atomCompoundText;
Atom atomTargets = atoms->atomTargets;
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/* Process all pending events */
while (XPending(pDisplay)) {
XTextProperty xtpText = { 0 };
XEvent event;
XSelectionEvent eventSelection;
unsigned long ulReturnBytesLeft;
char *pszReturnData = NULL;
char *pszGlobalData = NULL;
int iReturn;
HGLOBAL hGlobal = NULL;
XICCEncodingStyle xiccesStyle;
char *pszConvertData = NULL;
char *pszTextList[2] = { NULL };
int iCount;
char **ppszTextList = NULL;
wchar_t *pwszUnicodeStr = NULL;
Bool fAbort = FALSE;
Bool fCloseClipboard = FALSE;
Bool fSetClipboardData = TRUE;
/* Get the next event - will not block because one is ready */
XNextEvent(pDisplay, &event);
/* Branch on the event type */
switch (event.type) {
/*
* SelectionRequest
*/
case SelectionRequest:
{
char *pszAtomName = NULL;
winDebug("SelectionRequest - target %ld\n",
event.xselectionrequest.target);
pszAtomName = XGetAtomName(pDisplay,
event.xselectionrequest.target);
winDebug("SelectionRequest - Target atom name %s\n", pszAtomName);
XFree(pszAtomName);
pszAtomName = NULL;
}
/* Abort if invalid target type */
if (event.xselectionrequest.target != XA_STRING
&& event.xselectionrequest.target != atomUTF8String
&& event.xselectionrequest.target != atomCompoundText
&& event.xselectionrequest.target != atomTargets) {
/* Abort */
fAbort = TRUE;
goto winClipboardFlushXEvents_SelectionRequest_Done;
}
/* Handle targets type of request */
if (event.xselectionrequest.target == atomTargets) {
Atom atomTargetArr[] = { atomTargets,
atomCompoundText,
atomUTF8String,
XA_STRING
};
/* Try to change the property */
iReturn = XChangeProperty(pDisplay,
event.xselectionrequest.requestor,
event.xselectionrequest.property,
XA_ATOM,
32,
PropModeReplace,
(unsigned char *) atomTargetArr,
ARRAY_SIZE(atomTargetArr));
if (iReturn == BadAlloc
|| iReturn == BadAtom
|| iReturn == BadMatch
|| iReturn == BadValue || iReturn == BadWindow) {
ErrorF("winClipboardFlushXEvents - SelectionRequest - "
"XChangeProperty failed: %d\n", iReturn);
}
/* Setup selection notify xevent */
eventSelection.type = SelectionNotify;
eventSelection.send_event = True;
eventSelection.display = pDisplay;
eventSelection.requestor = event.xselectionrequest.requestor;
eventSelection.selection = event.xselectionrequest.selection;
eventSelection.target = event.xselectionrequest.target;
eventSelection.property = event.xselectionrequest.property;
eventSelection.time = event.xselectionrequest.time;
/*
* Notify the requesting window that
* the operation has completed
*/
iReturn = XSendEvent(pDisplay,
eventSelection.requestor,
False, 0L, (XEvent *) &eventSelection);
if (iReturn == BadValue || iReturn == BadWindow) {
ErrorF("winClipboardFlushXEvents - SelectionRequest - "
"XSendEvent () failed\n");
}
break;
}
/* Close clipboard if we have it open already */
if (GetOpenClipboardWindow() == hwnd) {
CloseClipboard();
}
/* Access the clipboard */
if (!OpenClipboard(hwnd)) {
ErrorF("winClipboardFlushXEvents - SelectionRequest - "
"OpenClipboard () failed: %08x\n", (unsigned int)GetLastError());
/* Abort */
fAbort = TRUE;
goto winClipboardFlushXEvents_SelectionRequest_Done;
}
/* Indicate that clipboard was opened */
fCloseClipboard = TRUE;
/* Check that clipboard format is available */
if (data->fUseUnicode && !IsClipboardFormatAvailable(CF_UNICODETEXT)) {
static int count; /* Hack to stop acroread spamming the log */
static HWND lasthwnd; /* I've not seen any other client get here repeatedly? */
if (hwnd != lasthwnd)
count = 0;
count++;
if (count < 6)
ErrorF("winClipboardFlushXEvents - CF_UNICODETEXT is not "
"available from Win32 clipboard. Aborting %d.\n",
count);
lasthwnd = hwnd;
/* Abort */
fAbort = TRUE;
goto winClipboardFlushXEvents_SelectionRequest_Done;
}
else if (!data->fUseUnicode && !IsClipboardFormatAvailable(CF_TEXT)) {
ErrorF("winClipboardFlushXEvents - CF_TEXT is not "
"available from Win32 clipboard. Aborting.\n");
/* Abort */
fAbort = TRUE;
goto winClipboardFlushXEvents_SelectionRequest_Done;
}
/* Setup the string style */
if (event.xselectionrequest.target == XA_STRING)
xiccesStyle = XStringStyle;
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#ifdef X_HAVE_UTF8_STRING
else if (event.xselectionrequest.target == atomUTF8String)
xiccesStyle = XUTF8StringStyle;
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#endif
else if (event.xselectionrequest.target == atomCompoundText)
xiccesStyle = XCompoundTextStyle;
else
xiccesStyle = XStringStyle;
/* Get a pointer to the clipboard text, in desired format */
if (data->fUseUnicode) {
/* Retrieve clipboard data */
hGlobal = GetClipboardData(CF_UNICODETEXT);
}
else {
/* Retrieve clipboard data */
hGlobal = GetClipboardData(CF_TEXT);
}
if (!hGlobal) {
ErrorF("winClipboardFlushXEvents - SelectionRequest - "
"GetClipboardData () failed: %08x\n", (unsigned int)GetLastError());
/* Abort */
fAbort = TRUE;
goto winClipboardFlushXEvents_SelectionRequest_Done;
}
pszGlobalData = (char *) GlobalLock(hGlobal);
/* Convert the Unicode string to UTF8 (MBCS) */
if (data->fUseUnicode) {
int iConvertDataLen = WideCharToMultiByte(CP_UTF8,
0,
(LPCWSTR) pszGlobalData,
-1, NULL, 0, NULL, NULL);
/* NOTE: iConvertDataLen includes space for null terminator */
pszConvertData = malloc(iConvertDataLen);
WideCharToMultiByte(CP_UTF8,
0,
(LPCWSTR) pszGlobalData,
-1,
pszConvertData,
iConvertDataLen, NULL, NULL);
}
else {
pszConvertData = strdup(pszGlobalData);
}
/* Convert DOS string to UNIX string */
winClipboardDOStoUNIX(pszConvertData, strlen(pszConvertData));
/* Setup our text list */
pszTextList[0] = pszConvertData;
pszTextList[1] = NULL;
/* Initialize the text property */
xtpText.value = NULL;
xtpText.nitems = 0;
/* Create the text property from the text list */
if (data->fUseUnicode) {
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#ifdef X_HAVE_UTF8_STRING
iReturn = Xutf8TextListToTextProperty(pDisplay,
pszTextList,
1, xiccesStyle, &xtpText);
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#endif
}
else {
iReturn = XmbTextListToTextProperty(pDisplay,
pszTextList,
1, xiccesStyle, &xtpText);
}
if (iReturn == XNoMemory || iReturn == XLocaleNotSupported) {
ErrorF("winClipboardFlushXEvents - SelectionRequest - "
"X*TextListToTextProperty failed: %d\n", iReturn);
/* Abort */
fAbort = TRUE;
goto winClipboardFlushXEvents_SelectionRequest_Done;
}
/* Free the converted string */
free(pszConvertData);
pszConvertData = NULL;
/* Copy the clipboard text to the requesting window */
iReturn = XChangeProperty(pDisplay,
event.xselectionrequest.requestor,
event.xselectionrequest.property,
event.xselectionrequest.target,
8,
PropModeReplace,
xtpText.value, xtpText.nitems);
if (iReturn == BadAlloc || iReturn == BadAtom
|| iReturn == BadMatch || iReturn == BadValue
|| iReturn == BadWindow) {
ErrorF("winClipboardFlushXEvents - SelectionRequest - "
"XChangeProperty failed: %d\n", iReturn);
/* Abort */
fAbort = TRUE;
goto winClipboardFlushXEvents_SelectionRequest_Done;
}
/* Release the clipboard data */
GlobalUnlock(hGlobal);
pszGlobalData = NULL;
fCloseClipboard = FALSE;
CloseClipboard();
/* Clean up */
XFree(xtpText.value);
xtpText.value = NULL;
xtpText.nitems = 0;
/* Setup selection notify event */
eventSelection.type = SelectionNotify;
eventSelection.send_event = True;
eventSelection.display = pDisplay;
eventSelection.requestor = event.xselectionrequest.requestor;
eventSelection.selection = event.xselectionrequest.selection;
eventSelection.target = event.xselectionrequest.target;
eventSelection.property = event.xselectionrequest.property;
eventSelection.time = event.xselectionrequest.time;
/* Notify the requesting window that the operation has completed */
iReturn = XSendEvent(pDisplay,
eventSelection.requestor,
False, 0L, (XEvent *) &eventSelection);
if (iReturn == BadValue || iReturn == BadWindow) {
ErrorF("winClipboardFlushXEvents - SelectionRequest - "
"XSendEvent () failed\n");
/* Abort */
fAbort = TRUE;
goto winClipboardFlushXEvents_SelectionRequest_Done;
}
winClipboardFlushXEvents_SelectionRequest_Done:
/* Free allocated resources */
if (xtpText.value) {
XFree(xtpText.value);
xtpText.value = NULL;
xtpText.nitems = 0;
}
free(pszConvertData);
if (hGlobal && pszGlobalData)
GlobalUnlock(hGlobal);
/*
* Send a SelectionNotify event to the requesting
* client when we abort.
*/
if (fAbort) {
/* Setup selection notify event */
eventSelection.type = SelectionNotify;
eventSelection.send_event = True;
eventSelection.display = pDisplay;
eventSelection.requestor = event.xselectionrequest.requestor;
eventSelection.selection = event.xselectionrequest.selection;
eventSelection.target = event.xselectionrequest.target;
eventSelection.property = None;
eventSelection.time = event.xselectionrequest.time;
/* Notify the requesting window that the operation is complete */
iReturn = XSendEvent(pDisplay,
eventSelection.requestor,
False, 0L, (XEvent *) &eventSelection);
if (iReturn == BadValue || iReturn == BadWindow) {
/*
* Should not be a problem if XSendEvent fails because
* the client may simply have exited.
*/
ErrorF("winClipboardFlushXEvents - SelectionRequest - "
"XSendEvent () failed for abort event.\n");
}
}
/* Close clipboard if it was opened */
if (fCloseClipboard) {
fCloseClipboard = FALSE;
CloseClipboard();
}
break;
/*
* SelectionNotify
*/
case SelectionNotify:
winDebug("winClipboardFlushXEvents - SelectionNotify\n");
{
char *pszAtomName;
pszAtomName = XGetAtomName(pDisplay,
event.xselection.selection);
winDebug
("winClipboardFlushXEvents - SelectionNotify - ATOM: %s\n",
pszAtomName);
XFree(pszAtomName);
}
/*
SelectionNotify with property of None indicates either:
(i) Generated by the X server if no owner for the specified selection exists
(perhaps it's disappeared on us mid-transaction), or
(ii) Sent by the selection owner when the requested selection conversion could
not be performed or server errors prevented the conversion data being returned
*/
if (event.xselection.property == None) {
ErrorF("winClipboardFlushXEvents - SelectionNotify - "
"Conversion to format %ld refused.\n",
event.xselection.target);
return WIN_XEVENTS_FAILED;
}
if (event.xselection.target == atomTargets) {
return winClipboardSelectionNotifyTargets(hwnd, iWindow, pDisplay, data, atoms);
}
/* Retrieve the selection data and delete the property */
iReturn = XGetWindowProperty(pDisplay,
iWindow,
atomLocalProperty,
0,
INT_MAX,
True,
AnyPropertyType,
&xtpText.encoding,
&xtpText.format,
&xtpText.nitems,
&ulReturnBytesLeft, &xtpText.value);
if (iReturn != Success) {
ErrorF("winClipboardFlushXEvents - SelectionNotify - "
"XGetWindowProperty () failed, aborting: %d\n", iReturn);
goto winClipboardFlushXEvents_SelectionNotify_Done;
}
{
char *pszAtomName = NULL;
winDebug("SelectionNotify - returned data %lu left %lu\n",
xtpText.nitems, ulReturnBytesLeft);
pszAtomName = XGetAtomName(pDisplay, xtpText.encoding);
winDebug("Notify atom name %s\n", pszAtomName);
XFree(pszAtomName);
pszAtomName = NULL;
}
if (data->fUseUnicode) {
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#ifdef X_HAVE_UTF8_STRING
/* Convert the text property to a text list */
iReturn = Xutf8TextPropertyToTextList(pDisplay,
&xtpText,
&ppszTextList, &iCount);
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#endif
}
else {
iReturn = XmbTextPropertyToTextList(pDisplay,
&xtpText,
&ppszTextList, &iCount);
}
if (iReturn == Success || iReturn > 0) {
/* Conversion succeeded or some unconvertible characters */
if (ppszTextList != NULL) {
int i;
int iReturnDataLen = 0;
for (i = 0; i < iCount; i++) {
iReturnDataLen += strlen(ppszTextList[i]);
}
pszReturnData = malloc(iReturnDataLen + 1);
pszReturnData[0] = '\0';
for (i = 0; i < iCount; i++) {
strcat(pszReturnData, ppszTextList[i]);
}
}
else {
ErrorF("winClipboardFlushXEvents - SelectionNotify - "
"X*TextPropertyToTextList list_return is NULL.\n");
pszReturnData = malloc(1);
pszReturnData[0] = '\0';
}
}
else {
ErrorF("winClipboardFlushXEvents - SelectionNotify - "
"X*TextPropertyToTextList returned: ");
switch (iReturn) {
case XNoMemory:
ErrorF("XNoMemory\n");
break;
case XLocaleNotSupported:
ErrorF("XLocaleNotSupported\n");
break;
case XConverterNotFound:
ErrorF("XConverterNotFound\n");
break;
default:
ErrorF("%d\n", iReturn);
break;
}
pszReturnData = malloc(1);
pszReturnData[0] = '\0';
}
/* Free the data returned from XGetWindowProperty */
if (ppszTextList)
XFreeStringList(ppszTextList);
ppszTextList = NULL;
XFree(xtpText.value);
xtpText.value = NULL;
xtpText.nitems = 0;
/* Convert the X clipboard string to DOS format */
winClipboardUNIXtoDOS(&pszReturnData, strlen(pszReturnData));
if (data->fUseUnicode) {
/* Find out how much space needed to convert MBCS to Unicode */
int iUnicodeLen = MultiByteToWideChar(CP_UTF8,
0,
pszReturnData, -1, NULL, 0);
/* NOTE: iUnicodeLen includes space for null terminator */
pwszUnicodeStr = malloc(sizeof(wchar_t) * iUnicodeLen);
if (!pwszUnicodeStr) {
ErrorF("winClipboardFlushXEvents - SelectionNotify "
"malloc failed for pwszUnicodeStr, aborting.\n");
/* Abort */
fAbort = TRUE;
goto winClipboardFlushXEvents_SelectionNotify_Done;
}
/* Do the actual conversion */
MultiByteToWideChar(CP_UTF8,
0,
pszReturnData,
-1, pwszUnicodeStr, iUnicodeLen);
/* Allocate global memory for the X clipboard data */
hGlobal = GlobalAlloc(GMEM_MOVEABLE,
sizeof(wchar_t) * iUnicodeLen);
}
else {
int iConvertDataLen = 0;
pszConvertData = strdup(pszReturnData);
iConvertDataLen = strlen(pszConvertData) + 1;
/* Allocate global memory for the X clipboard data */
hGlobal = GlobalAlloc(GMEM_MOVEABLE, iConvertDataLen);
}
free(pszReturnData);
/* Check that global memory was allocated */
if (!hGlobal) {
ErrorF("winClipboardFlushXEvents - SelectionNotify "
"GlobalAlloc failed, aborting: %08x\n", (unsigned int)GetLastError());
/* Abort */
fAbort = TRUE;
goto winClipboardFlushXEvents_SelectionNotify_Done;
}
/* Obtain a pointer to the global memory */
pszGlobalData = GlobalLock(hGlobal);
if (pszGlobalData == NULL) {
ErrorF("winClipboardFlushXEvents - Could not lock global "
"memory for clipboard transfer\n");
/* Abort */
fAbort = TRUE;
goto winClipboardFlushXEvents_SelectionNotify_Done;
}
/* Copy the returned string into the global memory */
if (data->fUseUnicode) {
wcscpy((wchar_t *)pszGlobalData, pwszUnicodeStr);
free(pwszUnicodeStr);
pwszUnicodeStr = NULL;
}
else {
strcpy(pszGlobalData, pszConvertData);
free(pszConvertData);
pszConvertData = NULL;
}
/* Release the pointer to the global memory */
GlobalUnlock(hGlobal);
pszGlobalData = NULL;
/* Push the selection data to the Windows clipboard */
if (data->fUseUnicode)
SetClipboardData(CF_UNICODETEXT, hGlobal);
else
SetClipboardData(CF_TEXT, hGlobal);
/* Flag that SetClipboardData has been called */
fSetClipboardData = FALSE;
/*
* NOTE: Do not try to free pszGlobalData, it is owned by
* Windows after the call to SetClipboardData ().
*/
winClipboardFlushXEvents_SelectionNotify_Done:
/* Free allocated resources */
if (ppszTextList)
XFreeStringList(ppszTextList);
if (xtpText.value) {
XFree(xtpText.value);
xtpText.value = NULL;
xtpText.nitems = 0;
}
free(pszConvertData);
free(pwszUnicodeStr);
if (hGlobal && pszGlobalData)
GlobalUnlock(hGlobal);
if (fSetClipboardData) {
SetClipboardData(CF_UNICODETEXT, NULL);
SetClipboardData(CF_TEXT, NULL);
}
return WIN_XEVENTS_NOTIFY_DATA;
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case SelectionClear:
winDebug("SelectionClear - doing nothing\n");
break;
case PropertyNotify:
break;
case MappingNotify:
break;
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default:
if (event.type == XFixesSetSelectionOwnerNotify + xfixes_event_base) {
XFixesSelectionNotifyEvent *e =
(XFixesSelectionNotifyEvent *) & event;
winDebug("winClipboardFlushXEvents - XFixesSetSelectionOwnerNotify\n");
/* Save selection owners for monitored selections, ignore other selections */
if ((e->selection == XA_PRIMARY) && fPrimarySelection) {
MonitorSelection(e, CLIP_OWN_PRIMARY);
}
else if (e->selection == atomClipboard) {
MonitorSelection(e, CLIP_OWN_CLIPBOARD);
}
else
break;
/* Selection is being disowned */
if (e->owner == None) {
winDebug
("winClipboardFlushXEvents - No window, returning.\n");
break;
}
/*
XXX: there are all kinds of wacky edge cases we might need here:
- we own windows clipboard, but neither PRIMARY nor CLIPBOARD have an owner, so we should disown it?
- root window is taking ownership?
*/
/* If we are the owner of the most recently owned selection, don't go all recursive :) */
if ((lastOwnedSelectionIndex != CLIP_OWN_NONE) &&
(s_iOwners[lastOwnedSelectionIndex] == iWindow)) {
winDebug("winClipboardFlushXEvents - Ownership changed to us, aborting.\n");
break;
}
/* Close clipboard if we have it open already (possible? correct??) */
if (GetOpenClipboardWindow() == hwnd) {
CloseClipboard();
}
/* Access the Windows clipboard */
if (!OpenClipboard(hwnd)) {
ErrorF("winClipboardFlushXEvents - OpenClipboard () failed: %08x\n",
(int) GetLastError());
break;
}
/* Take ownership of the Windows clipboard */
if (!EmptyClipboard()) {
ErrorF("winClipboardFlushXEvents - EmptyClipboard () failed: %08x\n",
(int) GetLastError());
break;
}
/* Advertise regular text and unicode */
SetClipboardData(CF_UNICODETEXT, NULL);
SetClipboardData(CF_TEXT, NULL);
/* Release the clipboard */
if (!CloseClipboard()) {
ErrorF("winClipboardFlushXEvents - CloseClipboard () failed: %08x\n",
(int) GetLastError());
break;
}
}
/* XFixesSelectionWindowDestroyNotifyMask */
/* XFixesSelectionClientCloseNotifyMask */
else {
ErrorF("winClipboardFlushXEvents - unexpected event type %d\n",
event.type);
}
break;
}
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}
return WIN_XEVENTS_SUCCESS;
2006-11-26 11:13:41 -07:00
}