diff options
Diffstat (limited to 'src/plugins/platforms/xlib/qxlibclipboard.cpp')
| -rw-r--r-- | src/plugins/platforms/xlib/qxlibclipboard.cpp | 676 |
1 files changed, 0 insertions, 676 deletions
diff --git a/src/plugins/platforms/xlib/qxlibclipboard.cpp b/src/plugins/platforms/xlib/qxlibclipboard.cpp deleted file mode 100644 index 69a0f20777..0000000000 --- a/src/plugins/platforms/xlib/qxlibclipboard.cpp +++ /dev/null @@ -1,676 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the plugins of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <private/qguiapplication_p.h> - -#include "qxlibclipboard.h" - -#include "qxlibscreen.h" -#include "qxlibmime.h" -#include "qxlibdisplay.h" - -#include <QtCore/QDebug> - -class QXlibClipboardMime : public QXlibMime -{ - Q_OBJECT -public: - QXlibClipboardMime(QClipboard::Mode mode, QXlibClipboard *clipboard) - : QXlibMime() - , m_clipboard(clipboard) - { - switch (mode) { - case QClipboard::Selection: - modeAtom = XA_PRIMARY; - break; - - case QClipboard::Clipboard: - modeAtom = QXlibStatic::atom(QXlibStatic::CLIPBOARD); - break; - - default: - qWarning("QTestLiteMime: Internal error: Unsupported clipboard mode"); - break; - } - } - -protected: - QStringList formats_sys() const - { - if (empty()) - return QStringList(); - - if (!formatList.count()) { - QXlibClipboardMime *that = const_cast<QXlibClipboardMime *>(this); - // 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... - that->format_atoms = m_clipboard->getDataInFormat(modeAtom,QXlibStatic::atom(QXlibStatic::TARGETS)); - - if (format_atoms.size() > 0) { - Atom *targets = (Atom *) format_atoms.data(); - int size = format_atoms.size() / sizeof(Atom); - - for (int i = 0; i < size; ++i) { - if (targets[i] == 0) - continue; - - QStringList formatsForAtom = mimeFormatsForAtom(m_clipboard->screen()->display()->nativeDisplay(),targets[i]); - for (int j = 0; j < formatsForAtom.size(); ++j) { - if (!formatList.contains(formatsForAtom.at(j))) - that->formatList.append(formatsForAtom.at(j)); - } - } - } - } - - return formatList; - } - - bool hasFormat_sys(const QString &format) const - { - QStringList list = formats(); - return list.contains(format); - } - - QVariant retrieveData_sys(const QString &fmt, QVariant::Type requestedType) const - { - if (fmt.isEmpty() || empty()) - return QByteArray(); - - (void)formats(); // trigger update of format list - - QList<Atom> atoms; - Atom *targets = (Atom *) format_atoms.data(); - int size = format_atoms.size() / sizeof(Atom); - for (int i = 0; i < size; ++i) - atoms.append(targets[i]); - - QByteArray encoding; - Atom fmtatom = mimeAtomForFormat(m_clipboard->screen()->display()->nativeDisplay(),fmt, requestedType, atoms, &encoding); - - if (fmtatom == 0) - return QVariant(); - - return mimeConvertToFormat(m_clipboard->screen()->display()->nativeDisplay(),fmtatom, m_clipboard->getDataInFormat(modeAtom,fmtatom), fmt, requestedType, encoding); - } -private: - bool empty() const - { - Window win = XGetSelectionOwner(m_clipboard->screen()->display()->nativeDisplay(), modeAtom); - - return win == XNone; - } - - - Atom modeAtom; - QXlibClipboard *m_clipboard; - QStringList formatList; - QByteArray format_atoms; -}; - -const int QXlibClipboard::clipboard_timeout = 5000; - -QXlibClipboard::QXlibClipboard(QXlibScreen *screen) - : QPlatformClipboard() - , m_screen(screen) - , m_xClipboard(0) - , m_clientClipboard(0) - , m_xSelection(0) - , m_clientSelection(0) - , m_requestor(XNone) - , m_owner(XNone) -{ -} - -QMimeData * QXlibClipboard::mimeData(QClipboard::Mode mode) -{ - if (mode == QClipboard::Clipboard) { - if (!m_xClipboard) { - m_xClipboard = new QXlibClipboardMime(mode, this); - } - Window clipboardOwner = XGetSelectionOwner(screen()->display()->nativeDisplay(),QXlibStatic::atom(QXlibStatic::CLIPBOARD)); - if (clipboardOwner == owner()) { - return m_clientClipboard; - } else { - return m_xClipboard; - } - } else if (mode == QClipboard::Selection) { - if (!m_xSelection) { - m_xSelection = new QXlibClipboardMime(mode, this); - } - Window clipboardOwner = XGetSelectionOwner(screen()->display()->nativeDisplay(),XA_PRIMARY); - if (clipboardOwner == owner()) { - return m_clientSelection; - } else { - return m_xSelection; - } - } - return 0; -} - -void QXlibClipboard::setMimeData(QMimeData *data, QClipboard::Mode mode) -{ - Atom modeAtom; - QMimeData **d; - switch (mode) { - case QClipboard::Selection: - modeAtom = XA_PRIMARY; - d = &m_clientSelection; - break; - - case QClipboard::Clipboard: - modeAtom = QXlibStatic::atom(QXlibStatic::CLIPBOARD); - d = &m_clientClipboard; - break; - - default: - qWarning("QClipboard::setMimeData: unsupported mode '%d'", mode); - return; - } - - Window newOwner; - - if (! data) { // no data, clear clipboard contents - newOwner = XNone; - } else { - newOwner = owner(); - - *d = data; - } - - XSetSelectionOwner(m_screen->display()->nativeDisplay(), modeAtom, newOwner, CurrentTime); - - if (XGetSelectionOwner(m_screen->display()->nativeDisplay(), modeAtom) != newOwner) { - qWarning("QClipboard::setData: Cannot set X11 selection owner"); - } - - emitChanged(mode); -} - -bool QXlibClipboard::supportsMode(QClipboard::Mode mode) const -{ - if (mode == QClipboard::Clipboard || mode == QClipboard::Selection) - return true; - return false; -} - - -QXlibScreen * QXlibClipboard::screen() const -{ - return m_screen; -} - -Window QXlibClipboard::requestor() const -{ - if (!m_requestor) { - int x = 0, y = 0, w = 3, h = 3; - QXlibClipboard *that = const_cast<QXlibClipboard *>(this); - Window window = XCreateSimpleWindow(m_screen->display()->nativeDisplay(), m_screen->rootWindow(), - x, y, w, h, 0 /*border_width*/, - m_screen->blackPixel(), m_screen->whitePixel()); - that->setRequestor(window); - } - return m_requestor; -} - -void QXlibClipboard::setRequestor(Window window) -{ - if (m_requestor != XNone) { - XDestroyWindow(m_screen->display()->nativeDisplay(),m_requestor); - } - m_requestor = window; -} - -Window QXlibClipboard::owner() const -{ - if (!m_owner) { - int x = 0, y = 0, w = 3, h = 3; - QXlibClipboard *that = const_cast<QXlibClipboard *>(this); - Window window = XCreateSimpleWindow(m_screen->display()->nativeDisplay(), m_screen->rootWindow(), - x, y, w, h, 0 /*border_width*/, - m_screen->blackPixel(), m_screen->whitePixel()); - that->setOwner(window); - } - return m_owner; -} - -void QXlibClipboard::setOwner(Window window) -{ - if (m_owner != XNone){ - XDestroyWindow(m_screen->display()->nativeDisplay(),m_owner); - } - m_owner = window; -} - -Atom QXlibClipboard::sendTargetsSelection(QMimeData *d, Window window, Atom property) -{ - QVector<Atom> types; - QStringList formats = QInternalMimeData::formatsHelper(d); - for (int i = 0; i < formats.size(); ++i) { - QList<Atom> atoms = QXlibMime::mimeAtomsForFormat(screen()->display()->nativeDisplay(),formats.at(i)); - for (int j = 0; j < atoms.size(); ++j) { - if (!types.contains(atoms.at(j))) - types.append(atoms.at(j)); - } - } - types.append(QXlibStatic::atom(QXlibStatic::TARGETS)); - types.append(QXlibStatic::atom(QXlibStatic::MULTIPLE)); - types.append(QXlibStatic::atom(QXlibStatic::TIMESTAMP)); - types.append(QXlibStatic::atom(QXlibStatic::SAVE_TARGETS)); - - XChangeProperty(screen()->display()->nativeDisplay(), window, property, XA_ATOM, 32, - PropModeReplace, (uchar *) types.data(), types.size()); - return property; -} - -Atom QXlibClipboard::sendSelection(QMimeData *d, Atom target, Window window, Atom property) -{ - Atom atomFormat = target; - int dataFormat = 0; - QByteArray data; - - QString fmt = QXlibMime::mimeAtomToString(screen()->display()->nativeDisplay(), target); - if (fmt.isEmpty()) { // Not a MIME type we have - qDebug() << "QClipboard: send_selection(): converting to type '%s' is not supported" << fmt.data(); - return XNone; - } - qDebug() << "QClipboard: send_selection(): converting to type '%s'" << fmt.data(); - - if (QXlibMime::mimeDataForAtom(screen()->display()->nativeDisplay(),target, d, &data, &atomFormat, &dataFormat)) { - - // don't allow INCR transfers when using MULTIPLE or to - // Motif clients (since Motif doesn't support INCR) - static Atom motif_clip_temporary = QXlibStatic::atom(QXlibStatic::CLIP_TEMPORARY); - bool allow_incr = property != motif_clip_temporary; - - // X_ChangeProperty protocol request is 24 bytes - const int increment = (XMaxRequestSize(screen()->display()->nativeDisplay()) * 4) - 24; - if (data.size() > increment && allow_incr) { - long bytes = data.size(); - XChangeProperty(screen()->display()->nativeDisplay(), window, property, - QXlibStatic::atom(QXlibStatic::INCR), 32, PropModeReplace, (uchar *) &bytes, 1); - -// (void)new QClipboardINCRTransaction(window, property, atomFormat, dataFormat, data, increment); - qDebug() << "not implemented INCRT just YET!"; - return property; - } - - // make sure we can perform the XChangeProperty in a single request - if (data.size() > increment) - return XNone; // ### perhaps use several XChangeProperty calls w/ PropModeAppend? - int dataSize = data.size() / (dataFormat / 8); - // use a single request to transfer data - XChangeProperty(screen()->display()->nativeDisplay(), window, property, atomFormat, - dataFormat, PropModeReplace, (uchar *) data.data(), - dataSize); - } - return property; -} - -void QXlibClipboard::handleSelectionRequest(XEvent *xevent) -{ - XSelectionRequestEvent *req = &xevent->xselectionrequest; - - if (requestor() && req->requestor == requestor()) { - qDebug() << "This should be caught before"; - return; - } - - 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 = XNone; - event.xselection.time = req->time; - - QMimeData *d; - if (req->selection == XA_PRIMARY) { - d = m_clientSelection; - } else if (req->selection == QXlibStatic::atom(QXlibStatic::CLIPBOARD)) { - d = m_clientClipboard; - } else { - qWarning("QClipboard: Unknown selection '%lx'", req->selection); - XSendEvent(screen()->display()->nativeDisplay(), req->requestor, False, NoEventMask, &event); - return; - } - - if (!d) { - qWarning("QClipboard: Cannot transfer data, no data available"); - XSendEvent(screen()->display()->nativeDisplay(), req->requestor, False, NoEventMask, &event); - return; - } - - Atom xa_targets = QXlibStatic::atom(QXlibStatic::TARGETS); - Atom xa_multiple = QXlibStatic::atom(QXlibStatic::MULTIPLE); - Atom xa_timestamp = QXlibStatic::atom(QXlibStatic::TIMESTAMP); - - struct AtomPair { Atom target; Atom property; } *multi = 0; - Atom multi_type = XNone; - int multi_format = 0; - int nmulti = 0; - int imulti = -1; - bool multi_writeback = false; - - if (req->target == xa_multiple) { - QByteArray multi_data; - if (req->property == XNone - || !clipboardReadProperty(req->requestor, req->property, false, &multi_data, - 0, &multi_type, &multi_format) - || multi_format != 32) { - // MULTIPLE property not formatted correctly - XSendEvent(screen()->display()->nativeDisplay(), req->requestor, False, NoEventMask, &event); - return; - } - 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 == XNone) // obsolete client - property = target; - } - - Atom ret = XNone; - if (target == XNone || property == XNone) { - ; - } else if (target == xa_timestamp) { -// if (d->timestamp != CurrentTime) { -// XChangeProperty(screen()->display()->nativeDisplay(), req->requestor, property, XA_INTEGER, 32, -// PropModeReplace, CurrentTime, 1); -// ret = property; -// } else { -// qWarning("QClipboard: Invalid data timestamp"); -// } - } else if (target == xa_targets) { - ret = sendTargetsSelection(d, req->requestor, property); - } else { - ret = sendSelection(d, target, req->requestor, property); - } - - if (nmulti > 0) { - if (ret == XNone) { - multi[imulti].property = XNone; - 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(screen()->display()->nativeDisplay(), 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(screen()->display()->nativeDisplay(), req->requestor, False, NoEventMask, &event); -} - -static inline int maxSelectionIncr(Display *dpy) -{ return XMaxRequestSize(dpy) > 65536 ? 65536*4 : XMaxRequestSize(dpy)*4 - 100; } - -bool QXlibClipboard::clipboardReadProperty(Window win, Atom property, bool deleteProperty, QByteArray *buffer, int *size, Atom *type, int *format) const -{ - int maxsize = maxSelectionIncr(screen()->display()->nativeDisplay()); - 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(screen()->display()->nativeDisplay(), win, property, 0, 0, False, - AnyPropertyType, type, format, - &length, &bytes_left, &data); - if (r != Success || (type && *type == XNone)) { - buffer->resize(0); - return false; - } - XFree((char*)data); - - int offset = 0, buffer_offset = 0, format_inc = 1, proplen = bytes_left; - - 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; - } - - int newSize = proplen; - buffer->resize(newSize); - - bool ok = (buffer->size() == newSize); - - if (ok && newSize) { - // could allocate buffer - - while (bytes_left) { - // more to read... - - r = XGetWindowProperty(screen()->display()->nativeDisplay(), win, property, offset, maxsize/4, - False, AnyPropertyType, type, format, - &length, &bytes_left, &data); - if (r != Success || (type && *type == XNone)) - 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 ((int)(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); - } - - if (*format == 8 && *type == QXlibStatic::atom(QXlibStatic::COMPOUND_TEXT)) { - // convert COMPOUND_TEXT to a multibyte string - XTextProperty textprop; - textprop.encoding = *type; - textprop.format = *format; - textprop.nitems = buffer_offset; - textprop.value = (unsigned char *) buffer->data(); - - char **list_ret = 0; - int count; - if (XmbTextPropertyToTextList(screen()->display()->nativeDisplay(), &textprop, &list_ret, - &count) == Success && count && list_ret) { - offset = buffer_offset = strlen(list_ret[0]); - buffer->resize(offset); - memcpy(buffer->data(), list_ret[0], offset); - } - if (list_ret) XFreeStringList(list_ret); - } - } - - // correct size, not 0-term. - if (size) - *size = buffer_offset; - - if (deleteProperty) - XDeleteProperty(screen()->display()->nativeDisplay(), win, property); - - screen()->display()->flush(); - - return ok; -} - -QByteArray QXlibClipboard::clipboardReadIncrementalProperty(Window win, Atom property, int nbytes, bool nullterm) -{ - XEvent event; - - QByteArray buf; - QByteArray 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 - buf.resize(nbytes+1); - alloc_error = buf.size() != nbytes+1; - } - - for (;;) { - screen()->display()->flush(); - if (!screen()->waitForClipboardEvent(win,PropertyNotify,&event,clipboard_timeout)) - break; - if (event.xproperty.atom != property || - event.xproperty.state != PropertyNewValue) - continue; - if (clipboardReadProperty(win, property, true, &tmp_buf, &length, 0, 0)) { - if (length == 0) { // no more data, we're done - if (nullterm) { - buf.resize(offset+1); - buf[offset] = '\0'; - } else { - buf.resize(offset); - } - return buf; - } else if (!alloc_error) { - if (offset+length > (int)buf.size()) { - buf.resize(offset+length+65535); - if (buf.size() != offset+length+65535) { - alloc_error = true; - length = buf.size() - offset; - } - } - memcpy(buf.data()+offset, tmp_buf.constData(), 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 - setRequestor(0); - - return QByteArray(); -} - -QByteArray QXlibClipboard::getDataInFormat(Atom modeAtom, Atom fmtatom) -{ - QByteArray buf; - - Window win = requestor(); - - XSelectInput(screen()->display()->nativeDisplay(), win, NoEventMask); // don't listen for any events - - XDeleteProperty(screen()->display()->nativeDisplay(), win, QXlibStatic::atom(QXlibStatic::_QT_SELECTION)); - XConvertSelection(screen()->display()->nativeDisplay(), modeAtom, fmtatom, QXlibStatic::atom(QXlibStatic::_QT_SELECTION), win, CurrentTime); - screen()->display()->sync(); - - XEvent xevent; - if (!screen()->waitForClipboardEvent(win,SelectionNotify,&xevent,clipboard_timeout) || - xevent.xselection.property == XNone) { - return buf; - } - - Atom type; - XSelectInput(screen()->display()->nativeDisplay(), win, PropertyChangeMask); - - if (clipboardReadProperty(win, QXlibStatic::atom(QXlibStatic::_QT_SELECTION), true, &buf, 0, &type, 0)) { - if (type == QXlibStatic::atom(QXlibStatic::INCR)) { - int nbytes = buf.size() >= 4 ? *((int*)buf.data()) : 0; - buf = clipboardReadIncrementalProperty(win, QXlibStatic::atom(QXlibStatic::_QT_SELECTION), nbytes, false); - } - } - - XSelectInput(screen()->display()->nativeDisplay(), win, NoEventMask); - - - return buf; -} - -#include "qxlibclipboard.moc" |