/**************************************************************************** ** ** Implementation of TQClipboard class for X11 ** ** Created : 960430 ** ** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. ** ** This file is part of the kernel module of the TQt GUI Toolkit. ** ** This file may be used under the terms of the GNU General ** Public License versions 2.0 or 3.0 as published by the Free ** Software Foundation and appearing in the files LICENSE.GPL2 ** and LICENSE.GPL3 included in the packaging of this file. ** Alternatively you may (at your option) use any later version ** of the GNU General Public License if such license has been ** publicly approved by Trolltech ASA (or its successors, if any) ** and the KDE Free TQt Foundation. ** ** Please review the following information to ensure GNU General ** Public Licensing requirements will be met: ** http://trolltech.com/products/qt/licenses/licensing/opensource/. ** If you are unsure which license is appropriate for your use, please ** review the following information: ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview ** or contact the sales department at sales@trolltech.com. ** ** This file may be used under the terms of the Q Public License as ** defined by Trolltech ASA and appearing in the file LICENSE.TQPL ** included in the packaging of this file. Licensees holding valid TQt ** Commercial licenses may use this file in accordance with the TQt ** Commercial License Agreement provided with the Software. ** ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted ** herein. ** **********************************************************************/ // #define TQCLIPBOARD_DEBUG // #define TQCLIPBOARD_DEBUG_VERBOSE #ifdef TQCLIPBOARD_DEBUG # define TQDEBUG qDebug #else # define TQDEBUG if (FALSE) qDebug #endif #ifdef TQCLIPBOARD_DEBUG_VERBOSE # define VTQDEBUG qDebug #else # define VTQDEBUG if (FALSE) qDebug #endif #include "qplatformdefs.h" // POSIX Large File Support redefines open -> open64 #if defined(open) # undef open #endif #include "ntqclipboard.h" #ifndef QT_NO_CLIPBOARD #include "ntqapplication.h" #include "ntqeventloop.h" #include "ntqbitmap.h" #include "ntqdatetime.h" #include "ntqdragobject.h" #include "ntqbuffer.h" #include "ntqtextcodec.h" #include "ntqvaluelist.h" #include "ntqmap.h" #include "qt_x11_p.h" #include "qapplication_p.h" // REVISED: arnt /***************************************************************************** Internal TQClipboard functions for X11. *****************************************************************************/ // from qapplication_x11.cpp typedef int (*QX11EventFilter) (XEvent*); extern QX11EventFilter qt_set_x11_event_filter (QX11EventFilter filter); extern Time qt_x_time; // def. in qapplication_x11.cpp extern Time qt_x_incr; // def. in qapplication_x11.cpp extern Atom qt_xa_clipboard; extern Atom qt_selection_property; extern Atom qt_clipboard_sentinel; extern Atom qt_selection_sentinel; extern Atom qt_utf8_string; // from qdnd_x11.cpp extern Atom* qt_xdnd_str_to_atom( const char *mimeType ); extern const char* qt_xdnd_atom_to_str( Atom ); static int clipboard_timeout = 5000; // 5s timeout on clipboard operations static TQWidget * owner = 0; static TQWidget *requestor = 0; static bool inSelectionMode_obsolete = FALSE; // ### remove 4.0 static bool timer_event_clear = FALSE; static int timer_id = 0; static int pending_timer_id = 0; static bool pending_clipboard_changed = FALSE; static bool pending_selection_changed = FALSE; Q_EXPORT bool qt_qclipboard_bailout_hack = false; // event capture mechanism for qt_xclb_wait_for_event static bool waiting_for_data = FALSE; static bool has_captured_event = FALSE; static Window capture_event_win = None; static int capture_event_type = -1; static XEvent captured_event; class TQClipboardWatcher; // forward decl static TQClipboardWatcher *selection_watcher = 0; static TQClipboardWatcher *clipboard_watcher = 0; static void cleanup() { delete owner; delete requestor; owner = 0; requestor = 0; } static void setupOwner() { if ( owner ) return; owner = new TQWidget( 0, "internal clipboard owner" ); requestor = new TQWidget(0, "internal clipboard requestor"); qAddPostRoutine( cleanup ); } static int sizeof_format(int format) { int sz; switch (format) { default: case 8: sz = sizeof( char); break; case 16: sz = sizeof(short); break; case 32: sz = sizeof( long); break; } return sz; } class TQClipboardWatcher : public TQMimeSource { public: TQClipboardWatcher( TQClipboard::Mode mode ); ~TQClipboardWatcher(); bool empty() const; const char* format( int n ) const; TQByteArray encodedData( const char* fmt ) const; TQByteArray getDataInFormat(Atom fmtatom) const; Atom atom; TQValueList formatList; }; class TQClipboardData { public: TQClipboardData(); ~TQClipboardData(); void setSource(TQMimeSource* s) { clear(TRUE); src = s; } TQMimeSource *source() const { return src; } void addTransferredPixmap(TQPixmap pm) { /* TODO: queue them */ transferred[tindex] = pm; tindex=(tindex+1)%2; } void clearTransfers() { transferred[0] = TQPixmap(); transferred[1] = TQPixmap(); } void clear(bool destruct=TRUE); TQMimeSource *src; Time timestamp; TQPixmap transferred[2]; int tindex; }; TQClipboardData::TQClipboardData() { src = 0; timestamp = CurrentTime; tindex=0; } TQClipboardData::~TQClipboardData() { clear(); } void TQClipboardData::clear(bool destruct) { if(destruct) delete src; src = 0; timestamp = CurrentTime; } static TQClipboardData *internalCbData = 0; static TQClipboardData *internalSelData = 0; static void cleanupClipboardData() { delete internalCbData; internalCbData = 0; } static TQClipboardData *clipboardData() { if ( internalCbData == 0 ) { internalCbData = new TQClipboardData; TQ_CHECK_PTR( internalCbData ); qAddPostRoutine( cleanupClipboardData ); } return internalCbData; } void qt_clipboard_cleanup_mime_source(TQMimeSource *src) { if(internalCbData && internalCbData->source() == src) internalCbData->clear(FALSE); } static void cleanupSelectionData() { delete internalSelData; internalSelData = 0; } static TQClipboardData *selectionData() { if (internalSelData == 0) { internalSelData = new TQClipboardData; TQ_CHECK_PTR(internalSelData); qAddPostRoutine(cleanupSelectionData); } return internalSelData; } class TQClipboardINCRTransaction { public: TQClipboardINCRTransaction(Window w, Atom p, Atom t, int f, TQByteArray d, unsigned int i); ~TQClipboardINCRTransaction(void); int x11Event(XEvent *event); Window window; Atom property, target; int format; TQByteArray data; unsigned int increment; unsigned int offset; }; typedef TQMap TransactionMap; static TransactionMap *transactions = 0; static QX11EventFilter prev_x11_event_filter = 0; static int incr_timer_id = 0; static int qt_xclb_transation_event_handler(XEvent *event) { TransactionMap::Iterator it = transactions->find(event->xany.window); if (it != transactions->end()) { if ((*it)->x11Event(event) != 0) return 1; } if (prev_x11_event_filter) return prev_x11_event_filter(event); return 0; } /* called when no INCR activity has happened for 'clipboard_timeout' milliseconds... we assume that all unfinished transactions have timed out and remove everything from the transaction map */ static void qt_xclb_incr_timeout(void) { qWarning("TQClipboard: timed out while sending data"); while (transactions) delete *transactions->begin(); } TQClipboardINCRTransaction::TQClipboardINCRTransaction(Window w, Atom p, Atom t, int f, TQByteArray d, unsigned int i) : window(w), property(p), target(t), format(f), data(d), increment(i), offset(0u) { TQDEBUG("TQClipboard: sending %d bytes (INCR transaction %p)", d.size(), this); XSelectInput(TQPaintDevice::x11AppDisplay(), window, PropertyChangeMask); if (! transactions) { VTQDEBUG("TQClipboard: created INCR transaction map"); transactions = new TransactionMap; prev_x11_event_filter = qt_set_x11_event_filter(qt_xclb_transation_event_handler); incr_timer_id = TQApplication::clipboard()->startTimer(clipboard_timeout); } transactions->insert(window, this); } TQClipboardINCRTransaction::~TQClipboardINCRTransaction(void) { VTQDEBUG("TQClipboard: destroyed INCR transacton %p", this); XSelectInput(TQPaintDevice::x11AppDisplay(), window, NoEventMask); transactions->remove(window); if (transactions->isEmpty()) { VTQDEBUG("TQClipboard: no more INCR transations"); delete transactions; transactions = 0; (void)qt_set_x11_event_filter(prev_x11_event_filter); if (incr_timer_id != 0) { TQApplication::clipboard()->killTimer(incr_timer_id); incr_timer_id = 0; } } } int TQClipboardINCRTransaction::x11Event(XEvent *event) { if (event->type != PropertyNotify || (event->xproperty.state != PropertyDelete || event->xproperty.atom != property)) return 0; // restart the INCR timer if (incr_timer_id) TQApplication::clipboard()->killTimer(incr_timer_id); incr_timer_id = TQApplication::clipboard()->startTimer(clipboard_timeout); unsigned int bytes_left = data.size() - offset; if (bytes_left > 0) { unsigned int xfer = TQMIN(increment, bytes_left); VTQDEBUG("TQClipboard: sending %d bytes, %d remaining (INCR transaction %p)", xfer, bytes_left - xfer, this); XChangeProperty(TQPaintDevice::x11AppDisplay(), window, property, target, format, PropModeReplace, (uchar *) data.data() + offset, xfer); offset += xfer; } else { // INCR transaction finished... XChangeProperty(TQPaintDevice::x11AppDisplay(), window, property, target, format, PropModeReplace, (uchar *) data.data(), 0); delete this; } return 1; } /***************************************************************************** TQClipboard member functions for X11. *****************************************************************************/ void TQClipboard::clear( Mode mode ) { setData(0, mode); } /*! Returns TRUE if the clipboard supports mouse selection; otherwise returns FALSE. */ bool TQClipboard::supportsSelection() const { return TRUE; } /*! Returns TRUE if this clipboard object owns the mouse selection data; otherwise returns FALSE. */ bool TQClipboard::ownsSelection() const { return selectionData()->timestamp != CurrentTime; } /*! Returns TRUE if this clipboard object owns the clipboard data; otherwise returns FALSE. */ bool TQClipboard::ownsClipboard() const { return clipboardData()->timestamp != CurrentTime; } /*! \obsolete Use the TQClipboard::data(), TQClipboard::setData() and related functions which take a TQClipboard::Mode argument. Sets the clipboard selection mode. If \a enable is TRUE, then subsequent calls to TQClipboard::setData() and other functions which put data into the clipboard will put the data into the mouse selection, otherwise the data will be put into the clipboard. \sa supportsSelection(), selectionModeEnabled() */ void TQClipboard::setSelectionMode(bool enable) { inSelectionMode_obsolete = enable; } /*! \obsolete Use the TQClipboard::data(), TQClipboard::setData() and related functions which take a TQClipboard::Mode argument. Returns the selection mode. \sa setSelectionMode(), supportsSelection() */ bool TQClipboard::selectionModeEnabled() const { return inSelectionMode_obsolete; } // event filter function... captures interesting events while // qt_xclb_wait_for_event is running the event loop static int qt_xclb_event_filter(XEvent *event) { if (event->xany.type == capture_event_type && event->xany.window == capture_event_win) { VTQDEBUG( "TQClipboard: event_filter(): caught event type %d", event->type ); has_captured_event = TRUE; captured_event = *event; return 1; } return 0; } static Bool checkForClipboardEvents(Display *, XEvent *e, XPointer) { return ((e->type == SelectionRequest && (e->xselectionrequest.selection == XA_PRIMARY || e->xselectionrequest.selection == qt_xa_clipboard)) || (e->type == SelectionClear && (e->xselectionclear.selection == XA_PRIMARY || e->xselectionclear.selection == qt_xa_clipboard))); } static bool selection_request_pending = false; static Bool check_selection_request_pending( Display*, XEvent* e, XPointer ) { if( e->type == SelectionRequest && e->xselectionrequest.owner == owner->winId()) selection_request_pending = true; return False; } bool qt_xclb_wait_for_event( Display *dpy, Window win, int type, XEvent *event, int timeout ) { TQTime started = TQTime::currentTime(); TQTime now = started; if (qApp->eventLoop()->inherits("TQMotif")) { // yes yes, evil hack, we know if ( waiting_for_data ) qFatal( "TQClipboard: internal error, qt_xclb_wait_for_event recursed" ); waiting_for_data = TRUE; has_captured_event = FALSE; capture_event_win = win; capture_event_type = type; QX11EventFilter old_event_filter = qt_set_x11_event_filter(qt_xclb_event_filter); do { if ( XCheckTypedWindowEvent(dpy,win,type,event) ) { waiting_for_data = FALSE; qt_set_x11_event_filter(old_event_filter); return TRUE; } now = TQTime::currentTime(); if ( started > now ) // crossed midnight started = now; // 0x08 == ExcludeTimers for X11 only qApp->eventLoop()->processEvents( TQEventLoop::ExcludeUserInput | TQEventLoop::ExcludeSocketNotifiers | TQEventLoop::WaitForMore | 0x08 ); if ( has_captured_event ) { waiting_for_data = FALSE; *event = captured_event; qt_set_x11_event_filter(old_event_filter); return TRUE; } } while ( started.msecsTo(now) < timeout ); waiting_for_data = FALSE; qt_set_x11_event_filter(old_event_filter); return FALSE; } bool flushed = FALSE; do { if ( XCheckTypedWindowEvent(dpy,win,type,event) ) return TRUE; if( qt_qclipboard_bailout_hack ) { XEvent dummy; selection_request_pending = false; if ( owner != NULL ) XCheckIfEvent(dpy,&dummy,check_selection_request_pending,NULL); if( selection_request_pending ) return TRUE; } // process other clipboard events, since someone is probably requesting data from us XEvent e; if (XCheckIfEvent(dpy, &e, checkForClipboardEvents, 0)) qApp->x11ProcessEvent(&e); now = TQTime::currentTime(); if ( started > now ) // crossed midnight started = now; if(!flushed) { XFlush( dpy ); flushed = TRUE; } // sleep 50ms, so we don't use up CPU cycles all the time. struct timeval usleep_tv; usleep_tv.tv_sec = 0; usleep_tv.tv_usec = 50000; select(0, 0, 0, 0, &usleep_tv); } while ( started.msecsTo(now) < timeout ); return FALSE; } static inline int maxSelectionIncr( Display *dpy ) { return XMaxRequestSize(dpy) > 65536 ? 65536*4 : XMaxRequestSize(dpy)*4 - 100; } // uglyhack: externed into qt_xdnd.cpp. qt is really not designed for // single-platform, multi-purpose blocks of code... bool qt_xclb_read_property( Display *dpy, Window win, Atom property, bool deleteProperty, TQByteArray *buffer, int *size, Atom *type, int *format, bool nullterm ) { int maxsize = maxSelectionIncr(dpy); ulong bytes_left; // bytes_after ulong length; // nitems uchar *data; Atom dummy_type; int dummy_format; int r; if ( !type ) // allow null args type = &dummy_type; if ( !format ) format = &dummy_format; // Don't read anything, just get the size of the property data r = XGetWindowProperty( dpy, win, property, 0, 0, False, AnyPropertyType, type, format, &length, &bytes_left, &data ); if (r != Success || (type && *type == None)) { buffer->resize( 0 ); return FALSE; } XFree( (char*)data ); int offset = 0, buffer_offset = 0, format_inc = 1, proplen = bytes_left; VTQDEBUG("TQClipboard: read_property(): initial property length: %d", proplen); switch (*format) { case 8: default: format_inc = sizeof(char) / 1; break; case 16: format_inc = sizeof(short) / 2; proplen *= sizeof(short) / 2; break; case 32: format_inc = sizeof(long) / 4; proplen *= sizeof(long) / 4; break; } bool ok = buffer->resize( proplen + (nullterm ? 1 : 0) ); VTQDEBUG("TQClipboard: read_property(): buffer resized to %d", buffer->size()); if ( ok ) { // could allocate buffer while ( bytes_left ) { // more to read... r = XGetWindowProperty( dpy, win, property, offset, maxsize/4, False, AnyPropertyType, type, format, &length, &bytes_left, &data ); if (r != Success || (type && *type == None)) break; offset += length / (32 / *format); length *= format_inc * (*format) / 8; // Here we check if we get a buffer overflow and tries to // recover -- this shouldn't normally happen, but it doesn't // hurt to be defensive if (buffer_offset + length > buffer->size()) { length = buffer->size() - buffer_offset; // escape loop bytes_left = 0; } memcpy(buffer->data() + buffer_offset, data, length); buffer_offset += length; XFree( (char*)data ); } static Atom xa_compound_text = *qt_xdnd_str_to_atom( "COMPOUND_TEXT" ); if ( *format == 8 && *type == xa_compound_text ) { // convert COMPOUND_TEXT to a multibyte string XTextProperty textprop; textprop.encoding = *type; textprop.format = *format; textprop.nitems = length; textprop.value = (unsigned char *) buffer->data(); char **list_ret = 0; int count; if ( XmbTextPropertyToTextList( dpy, &textprop, &list_ret, &count ) == Success && count && list_ret ) { offset = strlen( list_ret[0] ); buffer->resize( offset + ( nullterm ? 1 : 0 ) ); memcpy( buffer->data(), list_ret[0], offset ); } if (list_ret) XFreeStringList(list_ret); } // zero-terminate (for text) if (nullterm) buffer->at(buffer_offset) = '\0'; } // correct size, not 0-term. if ( size ) *size = buffer_offset; VTQDEBUG("TQClipboard: read_property(): buffer size %d, buffer offset %d, offset %d", buffer->size(), buffer_offset, offset); if ( deleteProperty ) XDeleteProperty( dpy, win, property ); XFlush( dpy ); return ok; } // this is externed into qt_xdnd.cpp too. TQByteArray qt_xclb_read_incremental_property( Display *dpy, Window win, Atom property, int nbytes, bool nullterm ) { XEvent event; TQByteArray buf; TQByteArray tmp_buf; bool alloc_error = FALSE; int length; int offset = 0; if ( nbytes > 0 ) { // Reserve buffer + zero-terminator (for text data) // We want to complete the INCR transfer even if we cannot // allocate more memory alloc_error = !buf.resize(nbytes+1); } for (;;) { XFlush( dpy ); if ( !qt_xclb_wait_for_event(dpy,win,PropertyNotify,&event,clipboard_timeout) ) break; if ( event.xproperty.atom != property || event.xproperty.state != PropertyNewValue ) continue; if ( qt_xclb_read_property(dpy, win, property, TRUE, &tmp_buf, &length,0, 0, FALSE) ) { if ( length == 0 ) { // no more data, we're done if ( nullterm ) { buf.resize( offset+1 ); buf.at( offset ) = '\0'; } else { buf.resize(offset); } return buf; } else if ( !alloc_error ) { if ( offset+length > (int)buf.size() ) { if ( !buf.resize(offset+length+65535) ) { alloc_error = TRUE; length = buf.size() - offset; } } memcpy( buf.data()+offset, tmp_buf.data(), length ); tmp_buf.resize( 0 ); offset += length; } } else { break; } } // timed out ... create a new requestor window, otherwise the requestor // could consider next request to be still part of this timed out request delete requestor; requestor = new TQWidget( 0, "internal clipboard requestor" ); return TQByteArray(); } static Atom send_selection(TQClipboardData *d, Atom target, Window window, Atom property, int format = 0, TQByteArray data = TQByteArray()); static Atom send_targets_selection(TQClipboardData *d, Window window, Atom property) { int atoms = 0; while (d->source()->format(atoms)) atoms++; if (d->source()->provides("image/ppm")) atoms++; if (d->source()->provides("image/pbm")) atoms++; if (d->source()->provides("text/plain")) atoms+=4; VTQDEBUG("TQClipboard: send_targets_selection(): %d provided types", atoms); // for 64 bit cleanness... XChangeProperty expects long* for data with format == 32 TQByteArray data((atoms+3) * sizeof(long)); // plus TARGETS, MULTIPLE and TIMESTAMP long *atarget = (long *) data.data(); const char *fmt; int n = 0; while ((fmt=d->source()->format(n)) && n < atoms) atarget[n++] = *qt_xdnd_str_to_atom(fmt); static Atom xa_text = *qt_xdnd_str_to_atom("TEXT"); static Atom xa_compound_text = *qt_xdnd_str_to_atom("COMPOUND_TEXT"); static Atom xa_targets = *qt_xdnd_str_to_atom("TARGETS"); static Atom xa_multiple = *qt_xdnd_str_to_atom("MULTIPLE"); static Atom xa_timestamp = *qt_xdnd_str_to_atom("TIMESTAMP"); if (d->source()->provides("image/ppm")) atarget[n++] = XA_PIXMAP; if (d->source()->provides("image/pbm")) atarget[n++] = XA_BITMAP; if (d->source()->provides("text/plain")) { atarget[n++] = qt_utf8_string; atarget[n++] = xa_text; atarget[n++] = xa_compound_text; atarget[n++] = XA_STRING; } atarget[n++] = xa_targets; atarget[n++] = xa_multiple; atarget[n++] = xa_timestamp; #if defined(TQCLIPBOARD_DEBUG_VERBOSE) for (int index = 0; index < n; index++) { VTQDEBUG(" atom %d: 0x%lx (%s)", index, atarget[index], qt_xdnd_atom_to_str(atarget[index])); } #endif XChangeProperty(TQPaintDevice::x11AppDisplay(), window, property, XA_ATOM, 32, PropModeReplace, (uchar *) data.data(), n); return property; } static Atom send_string_selection(TQClipboardData *d, Atom target, Window window, Atom property) { static Atom xa_text = *qt_xdnd_str_to_atom("TEXT"); static Atom xa_compound_text = *qt_xdnd_str_to_atom("COMPOUND_TEXT"); TQDEBUG("TQClipboard: send_string_selection():\n" " property type %lx\n" " property name '%s'", target, qt_xdnd_atom_to_str(target)); if (target == xa_text || target == xa_compound_text) { // the ICCCM states that TEXT and COMPOUND_TEXT are in the // encoding of choice, so we choose the encoding of the locale TQByteArray data = d->source()->encodedData("text/plain"); if(data.resize(data.size() + 1)) data[int(data.size() - 1)] = '\0'; char *list[] = { data.data(), NULL }; XICCEncodingStyle style = (target == xa_compound_text) ? XCompoundTextStyle : XStdICCTextStyle; XTextProperty textprop; if (list[0] != NULL && XmbTextListToTextProperty(TQPaintDevice::x11AppDisplay(), list, 1, style, &textprop) == Success) { TQDEBUG(" textprop type %lx\n" " textprop name '%s'\n" " format %d\n" " %ld items", textprop.encoding, qt_xdnd_atom_to_str(textprop.encoding), textprop.format, textprop.nitems); int sz = sizeof_format(textprop.format); data.duplicate((const char *) textprop.value, textprop.nitems * sz); XFree(textprop.value); return send_selection(d, textprop.encoding, window, property, textprop.format, data); } return None; } Atom xtarget = None; const char *fmt = 0; if (target == XA_STRING || (target == xa_text && TQTextCodec::codecForLocale()->mibEnum() == 4)) { // the ICCCM states that STRING is latin1 plus newline and tab // see section 2.6.2 fmt = "text/plain;charset=ISO-8859-1"; xtarget = XA_STRING; } else if (target == qt_utf8_string) { // proposed UTF8_STRING conversion type fmt = "text/plain;charset=UTF-8"; xtarget = qt_utf8_string; } if (xtarget == None) // should not happen return None; TQByteArray data = d->source()->encodedData(fmt); TQDEBUG(" format 8\n %d bytes", data.size()); return send_selection(d, xtarget, window, property, 8, data); } static Atom send_pixmap_selection(TQClipboardData *d, Atom target, Window window, Atom property) { TQPixmap pm; if ( target == XA_PIXMAP ) { TQByteArray data = d->source()->encodedData("image/ppm"); pm.loadFromData(data); } else if ( target == XA_BITMAP ) { TQByteArray data = d->source()->encodedData("image/pbm"); TQImage img; img.loadFromData(data); if ( img.depth() != 1 ) img = img.convertDepth(1); } if (pm.isNull()) // should never happen return None; Pixmap handle = pm.handle(); XChangeProperty(TQPaintDevice::x11AppDisplay(), window, property, target, 32, PropModeReplace, (uchar *) &handle, 1); d->addTransferredPixmap(pm); return property; } static Atom send_selection(TQClipboardData *d, Atom target, Window window, Atom property, int format, TQByteArray data) { if (format == 0) format = 8; if (data.isEmpty()) { const char *fmt = qt_xdnd_atom_to_str(target); TQDEBUG("TQClipboard: send_selection(): converting to type '%s'", fmt); if (fmt && !d->source()->provides(fmt)) // Not a MIME type we can produce return None; data = d->source()->encodedData(fmt); } TQDEBUG("TQClipboard: send_selection():\n" " property type %lx\n" " property name '%s'\n" " format %d\n" " %d bytes", target, qt_xdnd_atom_to_str(target), format, data.size()); // don't allow INCR transfers when using MULTIPLE or to // Motif clients (since Motif doesn't support INCR) static Atom motif_clip_temporary = *qt_xdnd_str_to_atom("CLIP_TEMPORARY"); bool allow_incr = property != motif_clip_temporary; // X_ChangeProperty protocol request is 24 bytes const unsigned int increment = (XMaxRequestSize(TQPaintDevice::x11AppDisplay()) * 4) - 24; if (data.size() > increment && allow_incr) { long bytes = data.size(); XChangeProperty(TQPaintDevice::x11AppDisplay(), window, property, qt_x_incr, 32, PropModeReplace, (uchar *) &bytes, 1); (void)new TQClipboardINCRTransaction(window, property, target, format, data, increment); return qt_x_incr; } // make sure we can perform the XChangeProperty in a single request if (data.size() > increment) return None; // ### perhaps use several XChangeProperty calls w/ PropModeAppend? // use a single request to transfer data XChangeProperty(TQPaintDevice::x11AppDisplay(), window, property, target, format, PropModeReplace, (uchar *) data.data(), data.size() / sizeof_format(format)); return property; } /*! \internal Internal cleanup for Windows. */ void TQClipboard::ownerDestroyed() { } /*! \internal Internal optimization for Windows. */ void TQClipboard::connectNotify( const char * ) { } /*! \reimp */ bool TQClipboard::event( TQEvent *e ) { if ( e->type() == TQEvent::Timer ) { TQTimerEvent *te = (TQTimerEvent *) e; if ( waiting_for_data ) // should never happen return FALSE; if (te->timerId() == timer_id) { killTimer(timer_id); timer_id = 0; timer_event_clear = TRUE; if ( selection_watcher ) // clear selection selectionData()->clear(); if ( clipboard_watcher ) // clear clipboard clipboardData()->clear(); timer_event_clear = FALSE; return TRUE; } else if ( te->timerId() == pending_timer_id ) { // I hate klipper killTimer( pending_timer_id ); pending_timer_id = 0; if ( pending_clipboard_changed ) { pending_clipboard_changed = FALSE; clipboardData()->clear(); emit dataChanged(); } if ( pending_selection_changed ) { pending_selection_changed = FALSE; selectionData()->clear(); emit selectionChanged(); } return TRUE; } else if (te->timerId() == incr_timer_id) { killTimer(incr_timer_id); incr_timer_id = 0; qt_xclb_incr_timeout(); return TRUE; } else { return TQObject::event( e ); } } else if ( e->type() != TQEvent::Clipboard ) { return TQObject::event( e ); } XEvent *xevent = (XEvent *)(((TQCustomEvent *)e)->data()); Display *dpy = TQPaintDevice::x11AppDisplay(); if ( !xevent ) return TRUE; switch ( xevent->type ) { case SelectionClear: // new selection owner if (xevent->xselectionclear.selection == XA_PRIMARY) { TQClipboardData *d = selectionData(); // ignore the event if it was generated before we gained selection ownership if (d->timestamp != CurrentTime && xevent->xselectionclear.time < d->timestamp) break; TQDEBUG("TQClipboard: new selection owner 0x%lx at time %lx (ours %lx)", XGetSelectionOwner(dpy, XA_PRIMARY), xevent->xselectionclear.time, d->timestamp); if ( ! waiting_for_data ) { d->clear(); emit selectionChanged(); } else { pending_selection_changed = TRUE; if ( ! pending_timer_id ) pending_timer_id = TQApplication::clipboard()->startTimer( 0 ); } } else if (xevent->xselectionclear.selection == qt_xa_clipboard) { TQClipboardData *d = clipboardData(); // ignore the event if it was generated before we gained selection ownership if (d->timestamp != CurrentTime && xevent->xselectionclear.time < d->timestamp) break; TQDEBUG("TQClipboard: new clipboard owner 0x%lx at time %lx (%lx)", XGetSelectionOwner(dpy, qt_xa_clipboard), xevent->xselectionclear.time, d->timestamp); if ( ! waiting_for_data ) { d->clear(); emit dataChanged(); } else { pending_clipboard_changed = TRUE; if ( ! pending_timer_id ) pending_timer_id = TQApplication::clipboard()->startTimer( 0 ); } } else { #ifdef QT_CHECK_STATE qWarning("TQClipboard: Unknown SelectionClear event received."); #endif return FALSE; } break; case SelectionNotify: /* Something has delivered data to us, but this was not caught by TQClipboardWatcher::getDataInFormat() Just skip the event to prevent Bad Things (tm) from happening later on... */ break; case SelectionRequest: { // someone wants our data XSelectionRequestEvent *req = &xevent->xselectionrequest; if (requestor && req->requestor == requestor->winId()) break; XEvent event; event.xselection.type = SelectionNotify; event.xselection.display = req->display; event.xselection.requestor = req->requestor; event.xselection.selection = req->selection; event.xselection.target = req->target; event.xselection.property = None; event.xselection.time = req->time; TQDEBUG("TQClipboard: SelectionRequest from %lx\n" " selection 0x%lx (%s) target 0x%lx (%s)", req->requestor, req->selection, qt_xdnd_atom_to_str(req->selection), req->target, qt_xdnd_atom_to_str(req->target)); TQClipboardData *d; if ( req->selection == XA_PRIMARY ) { d = selectionData(); } else if ( req->selection == qt_xa_clipboard ) { d = clipboardData(); } else { #ifdef QT_CHECK_RANGE qWarning("TQClipboard: unknown selection '%lx'", req->selection); #endif // QT_CHECK_RANGE XSendEvent(dpy, req->requestor, False, NoEventMask, &event); break; } if (! d->source()) { #ifdef QT_CHECK_STATE qWarning("TQClipboard: cannot transfer data, no data available"); #endif // QT_CHECK_STATE XSendEvent(dpy, req->requestor, False, NoEventMask, &event); break; } TQDEBUG("TQClipboard: SelectionRequest at time %lx (ours %lx)", req->time, d->timestamp); if (d->timestamp == CurrentTime // we don't own the selection anymore || (req->time != CurrentTime && req->time < d->timestamp)) { TQDEBUG("TQClipboard: SelectionRequest too old"); XSendEvent(dpy, req->requestor, False, NoEventMask, &event); break; } static Atom xa_text = *qt_xdnd_str_to_atom("TEXT"); static Atom xa_compound_text = *qt_xdnd_str_to_atom("COMPOUND_TEXT"); static Atom xa_targets = *qt_xdnd_str_to_atom("TARGETS"); static Atom xa_multiple = *qt_xdnd_str_to_atom("MULTIPLE"); static Atom xa_timestamp = *qt_xdnd_str_to_atom("TIMESTAMP"); struct AtomPair { Atom target; Atom property; } *multi = 0; Atom multi_type = None; int multi_format = 0; int nmulti = 0; int imulti = -1; bool multi_writeback = FALSE; if ( req->target == xa_multiple ) { TQByteArray multi_data; if (req->property == None || !qt_xclb_read_property(dpy, req->requestor, req->property, FALSE, &multi_data, 0, &multi_type, &multi_format, 0) || multi_format != 32) { // MULTIPLE property not formatted correctly XSendEvent(dpy, req->requestor, False, NoEventMask, &event); break; } nmulti = multi_data.size()/sizeof(*multi); multi = new AtomPair[nmulti]; memcpy(multi,multi_data.data(),multi_data.size()); imulti = 0; } for (; imulti < nmulti; ++imulti) { Atom target; Atom property; if ( multi ) { target = multi[imulti].target; property = multi[imulti].property; } else { target = req->target; property = req->property; if (property == None) // obsolete client property = target; } Atom ret = None; if (target == None || property == None) { ; } else if (target == xa_timestamp) { if (d->timestamp != CurrentTime) { XChangeProperty(dpy, req->requestor, property, xa_timestamp, 32, PropModeReplace, (uchar *) &d->timestamp, 1); ret = property; } else { #ifdef QT_CHECK_STATE qWarning("TQClipboard: invalid data timestamp"); #endif // QT_CHECK_STATE } } else if (target == xa_targets) { ret = send_targets_selection(d, req->requestor, property); } else if (target == XA_STRING || target == xa_text || target == xa_compound_text || target == qt_utf8_string) { ret = send_string_selection(d, target, req->requestor, property); } else if (target == XA_PIXMAP || target == XA_BITMAP) { ret = send_pixmap_selection(d, target, req->requestor, property); } else { ret = send_selection(d, target, req->requestor, property); } if (nmulti > 0) { if (ret == None) { multi[imulti].property = None; multi_writeback = TRUE; } } else { event.xselection.property = ret; break; } } if (nmulti > 0) { if (multi_writeback) { // according to ICCCM 2.6.2 says to put None back // into the original property on the requestor window XChangeProperty(dpy, req->requestor, req->property, multi_type, 32, PropModeReplace, (uchar *) multi, nmulti * 2); } delete [] multi; event.xselection.property = req->property; } // send selection notify to requestor XSendEvent(dpy, req->requestor, False, NoEventMask, &event); TQDEBUG("TQClipboard: SelectionNotify to 0x%lx\n" " property 0x%lx (%s)", req->requestor, event.xselection.property, qt_xdnd_atom_to_str(event.xselection.property)); } break; } return TRUE; } TQClipboardWatcher::TQClipboardWatcher( TQClipboard::Mode mode ) { switch ( mode ) { case TQClipboard::Selection: atom = XA_PRIMARY; break; case TQClipboard::Clipboard: atom = qt_xa_clipboard; break; #ifdef QT_CHECK_RANGE default: qWarning( "TQClipboardWatcher: internal error, unknown clipboard mode" ); break; #endif // QT_CHECK_RANGE } setupOwner(); } TQClipboardWatcher::~TQClipboardWatcher() { if( selection_watcher == this ) selection_watcher = 0; if( clipboard_watcher == this ) clipboard_watcher = 0; } bool TQClipboardWatcher::empty() const { Display *dpy = TQPaintDevice::x11AppDisplay(); Window win = XGetSelectionOwner( dpy, atom ); #ifdef QT_CHECK_STATE if( win == requestor->winId()) { qWarning( "TQClipboardWatcher::empty: internal error, app owns the selection" ); return TRUE; } #endif // QT_CHECK_STATE return win == None; } const char* TQClipboardWatcher::format( int n ) const { if ( empty() ) return 0; if (! formatList.count()) { // get the list of targets from the current clipboard owner - we do this // once so that multiple calls to this function don't require multiple // server round trips... static Atom xa_targets = *qt_xdnd_str_to_atom( "TARGETS" ); TQClipboardWatcher *that = (TQClipboardWatcher *) this; TQByteArray ba = getDataInFormat(xa_targets); if (ba.size() > 0) { Atom *unsorted_target = (Atom *) ba.data(); static Atom xa_text = *qt_xdnd_str_to_atom( "TEXT" ); static Atom xa_compound_text = *qt_xdnd_str_to_atom( "COMPOUND_TEXT" ); int i, size = ba.size() / sizeof(Atom); // sort TARGETS to prefer some types over others. some apps // will report XA_STRING before COMPOUND_TEXT, and we want the // latter, not the former (if it is present). Atom* target = new Atom[size+4]; memset( target, 0, (size+4) * sizeof(Atom) ); for ( i = 0; i < size; ++i ) { if ( unsorted_target[i] == qt_utf8_string ) target[0] = unsorted_target[i]; else if ( unsorted_target[i] == xa_compound_text ) target[1] = unsorted_target[i]; else if ( unsorted_target[i] == xa_text ) target[2] = unsorted_target[i]; else if ( unsorted_target[i] == XA_STRING ) target[3] = unsorted_target[i]; else target[i + 4] = unsorted_target[i]; } for (i = 0; i < size + 4; ++i) { if ( target[i] == 0 ) continue; VTQDEBUG(" format: %s", qt_xdnd_atom_to_str(target[i])); if ( target[i] == XA_PIXMAP ) that->formatList.append("image/ppm"); else if ( target[i] == XA_STRING ) that->formatList.append( "text/plain;charset=ISO-8859-1" ); else if ( target[i] == qt_utf8_string ) that->formatList.append( "text/plain;charset=UTF-8" ); else if ( target[i] == xa_text || target[i] == xa_compound_text ) that->formatList.append( "text/plain" ); else that->formatList.append(qt_xdnd_atom_to_str(target[i])); } delete []target; TQDEBUG("TQClipboardWatcher::format: %d formats available", int(that->formatList.count())); } } if (n >= 0 && n < (signed) formatList.count()) return formatList[n]; if (n == 0) return "text/plain"; return 0; } TQByteArray TQClipboardWatcher::encodedData( const char* fmt ) const { if ( !fmt || empty() ) return TQByteArray( 0 ); TQDEBUG("TQClipboardWatcher::encodedData: fetching format '%s'", fmt); Atom fmtatom = 0; if ( 0==qstricmp(fmt,"text/plain;charset=iso-8859-1") ) { // ICCCM section 2.6.2 says STRING is latin1 text fmtatom = XA_STRING; } else if ( 0==qstricmp(fmt,"text/plain;charset=utf-8") ) { // proprosed UTF8_STRING conversion type fmtatom = *qt_xdnd_str_to_atom( "UTF8_STRING" ); } else if ( 0==qstrcmp(fmt,"text/plain") ) { fmtatom = *qt_xdnd_str_to_atom( "COMPOUND_TEXT" ); } else if ( 0==qstrcmp(fmt,"image/ppm") ) { fmtatom = XA_PIXMAP; TQByteArray pmd = getDataInFormat(fmtatom); if ( pmd.size() == sizeof(Pixmap) ) { Pixmap xpm = *((Pixmap*)pmd.data()); Display *dpy = TQPaintDevice::x11AppDisplay(); Window r; int x,y; uint w,h,bw,d; if ( ! xpm ) return TQByteArray( 0 ); XGetGeometry(dpy,xpm, &r,&x,&y,&w,&h,&bw,&d); TQImageIO iio; GC gc = XCreateGC( dpy, xpm, 0, 0 ); if ( d == 1 ) { TQBitmap qbm(w,h); XCopyArea(dpy,xpm,qbm.handle(),gc,0,0,w,h,0,0); iio.setFormat("PBMRAW"); iio.setImage(qbm.convertToImage()); } else { TQPixmap qpm(w,h); XCopyArea(dpy,xpm,qpm.handle(),gc,0,0,w,h,0,0); iio.setFormat("PPMRAW"); iio.setImage(qpm.convertToImage()); } XFreeGC(dpy,gc); TQBuffer buf; buf.open(IO_WriteOnly); iio.setIODevice(&buf); iio.write(); return buf.buffer(); } else { fmtatom = *qt_xdnd_str_to_atom(fmt); } } else { fmtatom = *qt_xdnd_str_to_atom(fmt); } return getDataInFormat(fmtatom); } TQByteArray TQClipboardWatcher::getDataInFormat(Atom fmtatom) const { TQByteArray buf; Display *dpy = TQPaintDevice::x11AppDisplay(); Window win = requestor->winId(); TQDEBUG("TQClipboardWatcher::getDataInFormat: selection '%s' format '%s'", qt_xdnd_atom_to_str(atom), qt_xdnd_atom_to_str(fmtatom)); XSelectInput(dpy, win, NoEventMask); // don't listen for any events XDeleteProperty(dpy, win, qt_selection_property); XConvertSelection(dpy, atom, fmtatom, qt_selection_property, win, qt_x_time); XSync(dpy, FALSE); VTQDEBUG("TQClipboardWatcher::getDataInFormat: waiting for SelectionNotify event"); XEvent xevent; if ( !qt_xclb_wait_for_event(dpy,win,SelectionNotify,&xevent,clipboard_timeout) || xevent.xselection.property == None ) { TQDEBUG("TQClipboardWatcher::getDataInFormat: format not available"); return buf; } VTQDEBUG("TQClipboardWatcher::getDataInFormat: fetching data..."); Atom type; XSelectInput(dpy, win, PropertyChangeMask); if ( qt_xclb_read_property(dpy,win,qt_selection_property,TRUE, &buf,0,&type,0,FALSE) ) { if ( type == qt_x_incr ) { int nbytes = buf.size() >= 4 ? *((int*)buf.data()) : 0; buf = qt_xclb_read_incremental_property( dpy, win, qt_selection_property, nbytes, FALSE ); } } XSelectInput(dpy, win, NoEventMask); TQDEBUG("TQClipboardWatcher::getDataInFormat: %d bytes received", buf.size()); return buf; } TQMimeSource* TQClipboard::data( Mode mode ) const { TQClipboardData *d; switch ( mode ) { case Selection: d = selectionData(); break; case Clipboard: d = clipboardData(); break; default: #ifdef QT_CHECK_RANGE qWarning( "TQClipboard::data: invalid mode '%d'", mode ); #endif // QT_CHECK_RANGE return 0; } if ( ! d->source() && ! timer_event_clear ) { if ( mode == Selection ) { if ( ! selection_watcher ) selection_watcher = new TQClipboardWatcher( mode ); d->setSource( selection_watcher ); } else { if ( ! clipboard_watcher ) clipboard_watcher = new TQClipboardWatcher( mode ); d->setSource( clipboard_watcher ); } if (! timer_id) { // start a zero timer - we will clear cached data when the timer // times out, which will be the next time we hit the event loop... // that way, the data is cached long enough for calls within a single // loop/function, but the data doesn't linger around in case the selection // changes TQClipboard *that = ((TQClipboard *) this); timer_id = that->startTimer(0); } } return d->source(); } void TQClipboard::setData( TQMimeSource* src, Mode mode ) { Atom atom, sentinel_atom; TQClipboardData *d; switch ( mode ) { case Selection: atom = XA_PRIMARY; sentinel_atom = qt_selection_sentinel; d = selectionData(); break; case Clipboard: atom = qt_xa_clipboard; sentinel_atom = qt_clipboard_sentinel; d = clipboardData(); break; default: #ifdef QT_CHECK_RANGE qWarning( "TQClipboard::data: invalid mode '%d'", mode ); #endif // QT_CHECK_RANGE return; } Display *dpy = TQPaintDevice::x11AppDisplay(); Window newOwner; if (! src) { // no data, clear clipboard contents newOwner = None; d->clear(); } else { setupOwner(); newOwner = owner->winId(); d->setSource(src); d->timestamp = qt_x_time; } Window prevOwner = XGetSelectionOwner( dpy, atom ); // use qt_x_time, since d->timestamp == CurrentTime when clearing XSetSelectionOwner(dpy, atom, newOwner, qt_x_time); if ( mode == Selection ) emit selectionChanged(); else emit dataChanged(); if (XGetSelectionOwner(dpy, atom) != newOwner) { #ifdef QT_CHECK_STATE qWarning("TQClipboard::setData: Cannot set X11 selection owner for %s", qt_xdnd_atom_to_str(atom)); #endif // QT_CHECK_STATE d->clear(); return; } // Signal to other TQt processes that the selection has changed Window owners[2]; owners[0] = newOwner; owners[1] = prevOwner; XChangeProperty( dpy, TQApplication::desktop()->screen(0)->winId(), sentinel_atom, XA_WINDOW, 32, PropModeReplace, (unsigned char*)&owners, 2 ); } /* Called by the main event loop in qapplication_x11.cpp when the _QT_SELECTION_SENTINEL property has been changed (i.e. when some TQt process has performed TQClipboard::setData(). If it returns TRUE, the TQClipBoard dataChanged() signal should be emitted. */ bool qt_check_selection_sentinel() { bool doIt = TRUE; if ( owner ) { /* Since the X selection mechanism cannot give any signal when the selection has changed, we emulate it (for TQt processes) here. The notification should be ignored in case of either a) This is the process that did setData (because setData() then has already emitted dataChanged()) b) This is the process that owned the selection when dataChanged() was called (because we have then received a SelectionClear event, and have already emitted dataChanged() as a result of that) */ Window* owners; Atom actualType; int actualFormat; ulong nitems; ulong bytesLeft; if (XGetWindowProperty(TQPaintDevice::x11AppDisplay(), TQApplication::desktop()->screen(0)->winId(), qt_selection_sentinel, 0, 2, False, XA_WINDOW, &actualType, &actualFormat, &nitems, &bytesLeft, (unsigned char**)&owners) == Success) { if ( actualType == XA_WINDOW && actualFormat == 32 && nitems == 2 ) { Window win = owner->winId(); if ( owners[0] == win || owners[1] == win ) doIt = FALSE; } XFree( owners ); } } if (doIt) { if ( waiting_for_data ) { pending_selection_changed = TRUE; if ( ! pending_timer_id ) pending_timer_id = TQApplication::clipboard()->startTimer( 0 ); doIt = FALSE; } else { selectionData()->clear(); } } return doIt; } bool qt_check_clipboard_sentinel() { bool doIt = TRUE; if (owner) { Window *owners; Atom actualType; int actualFormat; unsigned long nitems, bytesLeft; if (XGetWindowProperty(TQPaintDevice::x11AppDisplay(), TQApplication::desktop()->screen(0)->winId(), qt_clipboard_sentinel, 0, 2, False, XA_WINDOW, &actualType, &actualFormat, &nitems, &bytesLeft, (unsigned char **) &owners) == Success) { if (actualType == XA_WINDOW && actualFormat == 32 && nitems == 2) { Window win = owner->winId(); if (owners[0] == win || owners[1] == win) doIt = FALSE; } XFree(owners); } } if (doIt) { if ( waiting_for_data ) { pending_clipboard_changed = TRUE; if ( ! pending_timer_id ) pending_timer_id = TQApplication::clipboard()->startTimer( 0 ); doIt = FALSE; } else { clipboardData()->clear(); } } return doIt; } #endif // QT_NO_CLIPBOARD