diff options
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbdrag.cpp')
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbdrag.cpp | 1332 |
1 files changed, 1332 insertions, 0 deletions
diff --git a/src/plugins/platforms/xcb/qxcbdrag.cpp b/src/plugins/platforms/xcb/qxcbdrag.cpp new file mode 100644 index 0000000000..8a6fd29986 --- /dev/null +++ b/src/plugins/platforms/xcb/qxcbdrag.cpp @@ -0,0 +1,1332 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module 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 "qxcbdrag.h" +#include <xcb/xcb.h> +#include "qxcbconnection.h" +#include "qxcbclipboard.h" +#include "qxcbmime.h" +#include "qxcbwindow.h" +#include "qxcbscreen.h" +#include "qwindow.h" +#include <private/qdnd_p.h> +#include <qdebug.h> +#include <qevent.h> +#include <qguiapplication.h> +#include <qrect.h> + +QT_BEGIN_NAMESPACE + +//#define DND_DEBUG +#ifdef DND_DEBUG +#define DEBUG qDebug +#else +#define DEBUG if(0) qDebug +#endif + +#ifdef DND_DEBUG +#define DNDDEBUG qDebug() +#else +#define DNDDEBUG if(0) qDebug() +#endif + +const int xdnd_version = 5; + +static inline xcb_window_t xcb_window(QWindow *w) +{ + return static_cast<QXcbWindow *>(w->handle())->xcb_window(); +} + + +static xcb_window_t xdndProxy(QXcbConnection *c, xcb_window_t w) +{ + xcb_window_t proxy = XCB_NONE; + + xcb_get_property_cookie_t cookie = Q_XCB_CALL2(xcb_get_property(c->xcb_connection(), false, w, c->atom(QXcbAtom::XdndProxy), + XCB_ATOM_WINDOW, 0, 1), c); + xcb_get_property_reply_t *reply = xcb_get_property_reply(c->xcb_connection(), cookie, 0); + + if (reply && reply->type == XCB_ATOM_WINDOW) + proxy = *((xcb_window_t *)xcb_get_property_value(reply)); + free(reply); + + if (proxy == XCB_NONE) + return proxy; + + // exists and is real? + cookie = Q_XCB_CALL2(xcb_get_property(c->xcb_connection(), false, proxy, c->atom(QXcbAtom::XdndProxy), + XCB_ATOM_WINDOW, 0, 1), c); + reply = xcb_get_property_reply(c->xcb_connection(), cookie, 0); + + if (reply && reply->type == XCB_ATOM_WINDOW) { + xcb_window_t p = *((xcb_window_t *)xcb_get_property_value(reply)); + if (proxy != p) + proxy = 0; + } else { + proxy = 0; + } + + free(reply); + + return proxy; +} + + +class QDropData : public QXcbMime +{ +public: + QDropData(QXcbDrag *d); + ~QDropData(); + +protected: + bool hasFormat_sys(const QString &mimeType) const; + QStringList formats_sys() const; + QVariant retrieveData_sys(const QString &mimeType, QVariant::Type type) const; + + QVariant xdndObtainData(const QByteArray &format, QVariant::Type requestedType) const; + + QXcbDrag *drag; +}; + + +QXcbDrag::QXcbDrag(QXcbConnection *c) + : QXcbObject(c) +{ + dropData = new QDropData(this); + + init(); + heartbeat = -1; + + transaction_expiry_timer = -1; +} + +QXcbDrag::~QXcbDrag() +{ + delete dropData; +} + +void QXcbDrag::init() +{ + currentWindow.clear(); + + xdnd_dragsource = XCB_NONE; + last_target_accepted_action = Qt::IgnoreAction; + + waiting_for_status = false; + current_target = XCB_NONE; + current_proxy_target = XCB_NONE; + xdnd_dragging = false; + + source_time = XCB_CURRENT_TIME; + target_time = XCB_CURRENT_TIME; + + current_screen = 0; + drag_types.clear(); +} + +QMimeData *QXcbDrag::platformDropData() +{ + return dropData; +} + +void QXcbDrag::startDrag() +{ + init(); + + heartbeat = startTimer(200); + xdnd_dragging = true; + + xcb_set_selection_owner(xcb_connection(), connection()->clipboard()->owner(), + atom(QXcbAtom::XdndSelection), connection()->time()); + + QDragManager *manager = QDragManager::self(); + QStringList fmts = QXcbMime::formatsHelper(manager->dropData()); + for (int i = 0; i < fmts.size(); ++i) { + QList<xcb_atom_t> atoms = QXcbMime::mimeAtomsForFormat(connection(), fmts.at(i)); + for (int j = 0; j < atoms.size(); ++j) { + if (!drag_types.contains(atoms.at(j))) + drag_types.append(atoms.at(j)); + } + } + if (drag_types.size() > 3) + xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, connection()->clipboard()->owner(), + atom(QXcbAtom::XdndTypelist), + XCB_ATOM_ATOM, 32, drag_types.size(), (const void *)drag_types.constData()); + + QPointF pos = QCursor::pos(); + QMouseEvent me(QEvent::MouseMove, pos, pos, pos, Qt::LeftButton, + QGuiApplication::mouseButtons(), QGuiApplication::keyboardModifiers()); + move(&me); + +// if (!QWidget::mouseGrabber()) +// manager->shapedPixmapWindow->grabMouse(); +} + +void QXcbDrag::endDrag() +{ + Q_ASSERT(heartbeat != -1); + killTimer(heartbeat); + heartbeat = -1; + + xdnd_dragging = false; +} + +static xcb_translate_coordinates_reply_t * +translateCoordinates(QXcbConnection *c, xcb_window_t from, xcb_window_t to, int x, int y) +{ + xcb_translate_coordinates_cookie_t cookie = + xcb_translate_coordinates(c->xcb_connection(), from, to, x, y); + return xcb_translate_coordinates_reply(c->xcb_connection(), cookie, 0); +} + +void QXcbDrag::move(const QMouseEvent *me) +{ + DEBUG() << "QDragManager::move enter"; + + // ### + QPoint globalPos = me->globalPos(); + + if (source_sameanswer.contains(globalPos) && source_sameanswer.isValid()) + return; + + const QList<QXcbScreen *> &screens = connection()->screens(); + QXcbScreen *screen = screens.at(connection()->primaryScreen()); + for (int i = 0; i < screens.size(); ++i) { + if (screens.at(i)->geometry().contains(globalPos)) { + screen = screens.at(i); + break; + } + } + if (screen != current_screen) { + // ### need to recreate the shaped pixmap window? +// int screen = QCursor::x11Screen(); +// if ((qt_xdnd_current_screen == -1 && screen != X11->defaultScreen) || (screen != qt_xdnd_current_screen)) { +// // recreate the pixmap on the new screen... +// delete xdnd_data.deco; +// QWidget* parent = object->source()->window()->x11Info().screen() == screen +// ? object->source()->window() : QApplication::desktop()->screen(screen); +// xdnd_data.deco = new QShapedPixmapWidget(parent); +// if (!QWidget::mouseGrabber()) { +// updatePixmap(); +// xdnd_data.deco->grabMouse(); +// } +// } +// xdnd_data.deco->move(QCursor::pos() - xdnd_data.deco->pm_hot); + current_screen = screen; + } + + +// qt_xdnd_current_screen = screen; + xcb_window_t rootwin = current_screen->root(); + xcb_translate_coordinates_reply_t *translate = + ::translateCoordinates(connection(), rootwin, rootwin, globalPos.x(), globalPos.y()); + if (!translate) + return; + xcb_window_t target = translate->child; + int lx = translate->dst_x; + int ly = translate->dst_y; + free (translate); + + if (target == rootwin) { + // Ok. + } else if (target) { + //me + xcb_window_t src = rootwin; + while (target != 0) { + DNDDEBUG << "checking target for XdndAware" << target; + + // translate coordinates + translate = ::translateCoordinates(connection(), src, target, lx, ly); + if (!translate) { + target = 0; + break; + } + lx = translate->dst_x; + ly = translate->dst_y; + src = translate->child; + free(translate); + + // check if it has XdndAware + xcb_get_property_cookie_t cookie = Q_XCB_CALL(xcb_get_property(xcb_connection(), false, target, + atom(QXcbAtom::XdndAware), XCB_GET_PROPERTY_TYPE_ANY, 0, 0)); + xcb_get_property_reply_t *reply = xcb_get_property_reply(xcb_connection(), cookie, 0); + bool aware = reply && reply->type != XCB_NONE; + free(reply); + if (aware) { + DNDDEBUG << "Found XdndAware on " << target; + break; + } + + // find child at the coordinates + translate = ::translateCoordinates(connection(), src, src, lx, ly); + if (!translate) { + target = 0; + break; + } + target = translate->child; + free(translate); + } + // #### +// if (xdnd_data.deco && (!target || target == xdnd_data.deco->effectiveWinId())) { +// DNDDEBUG << "need to find real window"; +// target = findRealWindow(globalPos, rootwin, 6); +// DNDDEBUG << "real window found" << QWidget::find(target) << target; +// } + } + + QXcbWindow *w = 0; + if (target) { + w = connection()->platformWindowFromId(target); + if (w && (w->window()->windowType() == Qt::Desktop) /*&& !w->acceptDrops()*/) + w = 0; + } else { + w = 0; + target = rootwin; + } + + DNDDEBUG << "and the final target is " << target; + DNDDEBUG << "the widget w is" << (w ? w->window() : 0); + + xcb_window_t proxy_target = xdndProxy(connection(), target); + if (!proxy_target) + proxy_target = target; + int target_version = 1; + + if (proxy_target) { + xcb_get_property_cookie_t cookie = xcb_get_property(xcb_connection(), false, target, + atom(QXcbAtom::XdndAware), XCB_GET_PROPERTY_TYPE_ANY, 0, 1); + xcb_get_property_reply_t *reply = xcb_get_property_reply(xcb_connection(), cookie, 0); + if (!reply || reply->type == XCB_NONE) + target = 0; + target_version = xcb_get_property_value_length(reply) == 1 ? *(uint32_t *)xcb_get_property_value(reply) : 1; + if (target_version > xdnd_version) + target_version = xdnd_version; + + free(reply); + } + + DEBUG() << "target=" << target << "current_target=" << current_target; + if (target != current_target) { + if (current_target) + send_leave(); + + current_target = target; + current_proxy_target = proxy_target; + if (target) { + int flags = target_version << 24; + if (drag_types.size() > 3) + flags |= 0x0001; + + xcb_client_message_event_t enter; + enter.response_type = XCB_CLIENT_MESSAGE; + enter.window = target; + enter.format = 32; + enter.type = atom(QXcbAtom::XdndEnter); + enter.data.data32[0] = connection()->clipboard()->owner(); + enter.data.data32[1] = flags; + enter.data.data32[2] = drag_types.size()>0 ? drag_types.at(0) : 0; + enter.data.data32[3] = drag_types.size()>1 ? drag_types.at(1) : 0; + enter.data.data32[4] = drag_types.size()>2 ? drag_types.at(2) : 0; + // provisionally set the rectangle to 5x5 pixels... + source_sameanswer = QRect(globalPos.x() - 2, globalPos.y() -2 , 5, 5); + + DEBUG() << "sending Xdnd enter source=" << enter.data.data32[0]; + if (w) + handleEnter(w->window(), &enter); + else if (target) + xcb_send_event(xcb_connection(), false, proxy_target, XCB_EVENT_MASK_NO_EVENT, (const char *)&enter); + waiting_for_status = false; + } + } + if (waiting_for_status) + return; + + QDragManager *m = QDragManager::self(); + + if (target) { + waiting_for_status = true; + + xcb_client_message_event_t move; + move.response_type = XCB_CLIENT_MESSAGE; + move.window = target; + move.format = 32; + move.type = atom(QXcbAtom::XdndPosition); + move.window = target; + move.data.data32[0] = connection()->clipboard()->owner(); + move.data.data32[1] = 0; // flags + move.data.data32[2] = (globalPos.x() << 16) + globalPos.y(); + move.data.data32[3] = connection()->time(); + move.data.data32[4] = toXdndAction(m->defaultAction(m->dragPrivate()->possible_actions, QGuiApplication::keyboardModifiers())); + DEBUG() << "sending Xdnd position source=" << move.data.data32[0] << "target=" << move.window; + + source_time = connection()->time(); + + if (w) + handle_xdnd_position(w->window(), &move, false); + else + xcb_send_event(xcb_connection(), false, proxy_target, XCB_EVENT_MASK_NO_EVENT, (const char *)&move); + } else { + if (m->willDrop) { + m->willDrop = false; + m->updateCursor(); + } + } + DEBUG() << "QDragManager::move leave"; +} + +void QXcbDrag::drop(const QMouseEvent *) +{ + endDrag(); + + if (!current_target) + return; + + xcb_client_message_event_t drop; + drop.response_type = XCB_CLIENT_MESSAGE; + drop.window = current_target; + drop.format = 32; + drop.type = atom(QXcbAtom::XdndDrop); + drop.data.data32[0] = connection()->clipboard()->owner(); + drop.data.data32[1] = 0; // flags + drop.data.data32[2] = connection()->time(); + + drop.data.data32[3] = 0; + drop.data.data32[4] = 0; + + QXcbWindow *w = connection()->platformWindowFromId(current_proxy_target); + + if (w && (w->window()->windowType() == Qt::Desktop) /*&& !w->acceptDrops()*/) + w = 0; + + QDragManager *manager = QDragManager::self(); + + Transaction t = { + connection()->time(), + current_target, + current_proxy_target, + (w ? w->window() : 0), +// current_embedding_widget, + manager->object + }; + transactions.append(t); + restartDropExpiryTimer(); + + if (w) + handleDrop(w->window(), &drop, false); + else + xcb_send_event(xcb_connection(), false, current_proxy_target, XCB_EVENT_MASK_NO_EVENT, (const char *)&drop); + + current_target = 0; + current_proxy_target = 0; + source_time = 0; +// current_embedding_widget = 0; + manager->object = 0; +} + +Qt::DropAction QXcbDrag::toDropAction(xcb_atom_t a) const +{ + if (a == atom(QXcbAtom::XdndActionCopy) || a == 0) + return Qt::CopyAction; + if (a == atom(QXcbAtom::XdndActionLink)) + return Qt::LinkAction; + if (a == atom(QXcbAtom::XdndActionMove)) + return Qt::MoveAction; + return Qt::CopyAction; +} + +xcb_atom_t QXcbDrag::toXdndAction(Qt::DropAction a) const +{ + switch (a) { + case Qt::CopyAction: + return atom(QXcbAtom::XdndActionCopy); + case Qt::LinkAction: + return atom(QXcbAtom::XdndActionLink); + case Qt::MoveAction: + case Qt::TargetMoveAction: + return atom(QXcbAtom::XdndActionMove); + case Qt::IgnoreAction: + return XCB_NONE; + default: + return atom(QXcbAtom::XdndActionCopy); + } +} + +// timer used to discard old XdndDrop transactions +enum { XdndDropTransactionTimeout = 5000 }; // 5 seconds + +void QXcbDrag::restartDropExpiryTimer() +{ + if (transaction_expiry_timer != -1) + killTimer(transaction_expiry_timer); + transaction_expiry_timer = startTimer(XdndDropTransactionTimeout); +} + +int QXcbDrag::findTransactionByWindow(xcb_window_t window) +{ + int at = -1; + for (int i = 0; i < transactions.count(); ++i) { + const Transaction &t = transactions.at(i); + if (t.target == window || t.proxy_target == window) { + at = i; + break; + } + } + return at; +} + +int QXcbDrag::findTransactionByTime(xcb_timestamp_t timestamp) +{ + int at = -1; + for (int i = 0; i < transactions.count(); ++i) { + const Transaction &t = transactions.at(i); + if (t.timestamp == timestamp) { + at = i; + break; + } + } + return at; +} + +#if 0 + +// find an ancestor with XdndAware on it +static Window findXdndAwareParent(Window window) +{ + Window target = 0; + forever { + // check if window has XdndAware + Atom type = 0; + int f; + unsigned long n, a; + unsigned char *data = 0; + if (XGetWindowProperty(X11->display, window, ATOM(XdndAware), 0, 0, False, + AnyPropertyType, &type, &f,&n,&a,&data) == Success) { + if (data) + XFree(data); + if (type) { + target = window; + break; + } + } + + // try window's parent + Window root; + Window parent; + Window *children; + uint unused; + if (!XQueryTree(X11->display, window, &root, &parent, &children, &unused)) + break; + if (children) + XFree(children); + if (window == root) + break; + window = parent; + } + return target; +} + + +// for embedding only +static QWidget* current_embedding_widget = 0; +static xcb_client_message_event_t last_enter_event; + + +static bool checkEmbedded(QWidget* w, const XEvent* xe) +{ + if (!w) + return false; + + if (current_embedding_widget != 0 && current_embedding_widget != w) { + current_target = ((QExtraWidget*)current_embedding_widget)->extraData()->xDndProxy; + current_proxy_target = current_target; + qt_xdnd_send_leave(); + current_target = 0; + current_proxy_target = 0; + current_embedding_widget = 0; + } + + QWExtra* extra = ((QExtraWidget*)w)->extraData(); + if (extra && extra->xDndProxy != 0) { + + if (current_embedding_widget != w) { + + last_enter_event.xany.window = extra->xDndProxy; + XSendEvent(X11->display, extra->xDndProxy, False, NoEventMask, &last_enter_event); + current_embedding_widget = w; + } + + ((XEvent*)xe)->xany.window = extra->xDndProxy; + XSendEvent(X11->display, extra->xDndProxy, False, NoEventMask, (XEvent*)xe); + if (currentWindow != w) { + currentWindow = w; + } + return true; + } + current_embedding_widget = 0; + return false; +} +#endif + + +void QXcbDrag::handleEnter(QWindow *window, const xcb_client_message_event_t *event) +{ + Q_UNUSED(window); + DEBUG() << "handleEnter" << window; + + xdnd_types.clear(); +// motifdnd_active = false; +// last_enter_event.xclient = xe->xclient; + + int version = (int)(event->data.data32[1] >> 24); + if (version > xdnd_version) + return; + + xdnd_dragsource = event->data.data32[0]; + + if (event->data.data32[1] & 1) { + // get the types from XdndTypeList + xcb_get_property_cookie_t cookie = xcb_get_property(xcb_connection(), false, xdnd_dragsource, + atom(QXcbAtom::XdndTypelist), XCB_ATOM_ATOM, + 0, xdnd_max_type); + xcb_get_property_reply_t *reply = xcb_get_property_reply(xcb_connection(), cookie, 0); + if (reply && reply->type != XCB_NONE && reply->format == 32) { + int length = xcb_get_property_value_length(reply) / 4; + if (length > xdnd_max_type) + length = xdnd_max_type; + + xcb_atom_t *atoms = (xcb_atom_t *)xcb_get_property_value(reply); + for (int i = 0; i < length; ++i) + xdnd_types.append(atoms[i]); + } + free(reply); + } else { + // get the types from the message + for(int i = 2; i < 5; i++) { + if (event->data.data32[i]) + xdnd_types.append(event->data.data32[i]); + } + } + for(int i = 0; i < xdnd_types.length(); ++i) + DEBUG() << " " << connection()->atomName(xdnd_types.at(i)); +} + +void QXcbDrag::handle_xdnd_position(QWindow *w, const xcb_client_message_event_t *e, bool passive) +{ + QPoint p((e->data.data32[2] & 0xffff0000) >> 16, e->data.data32[2] & 0x0000ffff); + Q_ASSERT(w); + QRect geometry = w->geometry(); + + p -= geometry.topLeft(); + + // #### +// if (!passive && checkEmbedded(w, e)) +// return; + + if (!w || (/*!w->acceptDrops() &&*/ (w->windowType() == Qt::Desktop))) + return; + + if (e->data.data32[0] != xdnd_dragsource) { + DEBUG("xdnd drag position from unexpected source (%x not %x)", e->data.data32[0], xdnd_dragsource); + return; + } + + // timestamp from the source + if (e->data.data32[3] != XCB_NONE) + target_time /*= X11->userTime*/ = e->data.data32[3]; + + QDragManager *manager = QDragManager::self(); + QMimeData *dropData = manager->dropData(); + + xcb_client_message_event_t response; + response.response_type = XCB_CLIENT_MESSAGE; + response.window = xdnd_dragsource; + response.format = 32; + response.type = atom(QXcbAtom::XdndStatus); + response.data.data32[0] = xcb_window(w); + response.data.data32[1] = 0; // flags + response.data.data32[2] = 0; // x, y + response.data.data32[3] = 0; // w, h + response.data.data32[4] = 0; // action + + if (!passive) { // otherwise just reject + QRect answerRect(p + geometry.topLeft(), QSize(1,1)); + + if (manager->object) { + manager->possible_actions = manager->dragPrivate()->possible_actions; + } else { + manager->possible_actions = Qt::DropActions(toDropAction(e->data.data32[4])); + } + QDragMoveEvent me(p, manager->possible_actions, dropData, + QGuiApplication::mouseButtons(), QGuiApplication::keyboardModifiers()); + + Qt::DropAction accepted_action = Qt::IgnoreAction; + + currentPosition = p; + + if (w != currentWindow.data()) { + if (currentWindow) { + QDragLeaveEvent e; + QGuiApplication::sendEvent(currentWindow.data(), &e); + } + currentWindow = w; + + last_target_accepted_action = Qt::IgnoreAction; + QDragEnterEvent de(p, manager->possible_actions, dropData, + QGuiApplication::mouseButtons(), QGuiApplication::keyboardModifiers()); + QGuiApplication::sendEvent(w, &de); + if (de.isAccepted() && de.dropAction() != Qt::IgnoreAction) + last_target_accepted_action = de.dropAction(); + } + + DEBUG() << "qt_handle_xdnd_position action=" << connection()->atomName(e->data.data32[4]); + + if (last_target_accepted_action != Qt::IgnoreAction) { + me.setDropAction(last_target_accepted_action); + me.accept(); + } + QGuiApplication::sendEvent(w, &me); + if (me.isAccepted()) { + response.data.data32[1] = 1; // yes + accepted_action = me.dropAction(); + last_target_accepted_action = accepted_action; + } else { + response.data.data32[0] = 0; + last_target_accepted_action = Qt::IgnoreAction; + } + answerRect = me.answerRect().translated(geometry.topLeft()).intersected(geometry); + + if (answerRect.left() < 0) + answerRect.setLeft(0); + if (answerRect.right() > 4096) + answerRect.setRight(4096); + if (answerRect.top() < 0) + answerRect.setTop(0); + if (answerRect.bottom() > 4096) + answerRect.setBottom(4096); + if (answerRect.width() < 0) + answerRect.setWidth(0); + if (answerRect.height() < 0) + answerRect.setHeight(0); + +// response.data.data32[2] = (answerRect.x() << 16) + answerRect.y(); +// response.data.data32[3] = (answerRect.width() << 16) + answerRect.height(); + response.data.data32[4] = toXdndAction(accepted_action); + } + + // reset + target_time = XCB_CURRENT_TIME; + + DEBUG() << "sending XdndStatus" << (xdnd_dragsource == connection()->clipboard()->owner()) << xdnd_dragsource + << response.data.data32[1] << connection()->atomName(response.data.data32[4]); + if (xdnd_dragsource == connection()->clipboard()->owner()) + handle_xdnd_status(&response, passive); + else + Q_XCB_CALL(xcb_send_event(xcb_connection(), false, xdnd_dragsource, + XCB_EVENT_MASK_NO_EVENT, (const char *)&response)); +} + +namespace +{ + class ClientMessageScanner { + public: + ClientMessageScanner(xcb_atom_t a) : atom(a) {} + xcb_atom_t atom; + bool check(xcb_generic_event_t *event) const { + if (!event) + return false; + if ((event->response_type & 0x7f) != XCB_CLIENT_MESSAGE) + return false; + return ((xcb_client_message_event_t *)event)->type == atom; + } + }; +} + +void QXcbDrag::handlePosition(QWindow * w, const xcb_client_message_event_t *event, bool passive) +{ + xcb_client_message_event_t *lastEvent = const_cast<xcb_client_message_event_t *>(event); + xcb_generic_event_t *nextEvent; + ClientMessageScanner scanner(atom(QXcbAtom::XdndPosition)); + while ((nextEvent = connection()->checkEvent(scanner))) { + if (lastEvent != event) + free(lastEvent); + lastEvent = (xcb_client_message_event_t *)nextEvent; + } + + handle_xdnd_position(w, lastEvent, passive); + if (lastEvent != event) + free(lastEvent); +} + +void QXcbDrag::handle_xdnd_status(const xcb_client_message_event_t *event, bool) +{ + DEBUG("xdndHandleStatus"); + // ignore late status messages + if (event->data.data32[0] && event->data.data32[0] != current_proxy_target) + return; + + Qt::DropAction newAction = (event->data.data32[1] & 0x1) ? toDropAction(event->data.data32[4]) : Qt::IgnoreAction; + + if ((event->data.data32[1] & 2) == 0) { + QPoint p((event->data.data32[2] & 0xffff0000) >> 16, event->data.data32[2] & 0x0000ffff); + QSize s((event->data.data32[3] & 0xffff0000) >> 16, event->data.data32[3] & 0x0000ffff); + source_sameanswer = QRect(p, s); + } else { + source_sameanswer = QRect(); + } + QDragManager *manager = QDragManager::self(); + manager->willDrop = (event->data.data32[1] & 0x1); + if (manager->global_accepted_action != newAction) { + manager->global_accepted_action = newAction; + manager->emitActionChanged(newAction); + } + DEBUG() << "willDrop=" << manager->willDrop << "action=" << newAction; + manager->updateCursor(); + waiting_for_status = false; +} + +void QXcbDrag::handleStatus(const xcb_client_message_event_t *event, bool passive) +{ + if (event->window != connection()->clipboard()->owner()) + return; + + xcb_client_message_event_t *lastEvent = const_cast<xcb_client_message_event_t *>(event); + qDebug() << "handleStatus" << lastEvent->window << lastEvent->data.data32[0]; + xcb_generic_event_t *nextEvent; + ClientMessageScanner scanner(atom(QXcbAtom::XdndStatus)); + while ((nextEvent = connection()->checkEvent(scanner))) { + if (lastEvent != event) + free(lastEvent); + lastEvent = (xcb_client_message_event_t *)nextEvent; + } + + handle_xdnd_status(lastEvent, passive); + if (lastEvent != event) + free(lastEvent); + DEBUG("xdndHandleStatus end"); +} + +void QXcbDrag::handleLeave(QWindow *w, const xcb_client_message_event_t *event, bool /*passive*/) +{ + DEBUG("xdnd leave"); + if (!currentWindow || w != currentWindow.data()) + return; // sanity + + // ### +// if (checkEmbedded(current_embedding_widget, event)) { +// current_embedding_widget = 0; +// currentWindow.clear(); +// return; +// } + + if (event->data.data32[0] != xdnd_dragsource) { + // This often happens - leave other-process window quickly + DEBUG("xdnd drag leave from unexpected source (%x not %x", event->data.data32[0], xdnd_dragsource); + } + + QDragLeaveEvent e; + QGuiApplication::sendEvent(currentWindow.data(), &e); + + xdnd_dragsource = 0; + xdnd_types.clear(); + currentWindow.clear(); +} + +void QXcbDrag::send_leave() +{ + if (!current_target) + return; + + QDragManager *manager = QDragManager::self(); + + xcb_client_message_event_t leave; + leave.response_type = XCB_CLIENT_MESSAGE; + leave.window = current_target; + leave.format = 32; + leave.type = atom(QXcbAtom::XdndLeave); + leave.data.data32[0] = connection()->clipboard()->owner(); + leave.data.data32[1] = 0; // flags + leave.data.data32[2] = 0; // x, y + leave.data.data32[3] = 0; // w, h + leave.data.data32[4] = 0; // just null + + QXcbWindow *w = connection()->platformWindowFromId(current_proxy_target); + + if (w && (w->window()->windowType() == Qt::Desktop) /*&& !w->acceptDrops()*/) + w = 0; + + if (w) + handleLeave(w->window(), (const xcb_client_message_event_t *)&leave, false); + else + xcb_send_event(xcb_connection(), false,current_proxy_target, + XCB_EVENT_MASK_NO_EVENT, (const char *)&leave); + + // reset the drag manager state + manager->willDrop = false; + if (manager->global_accepted_action != Qt::IgnoreAction) + manager->emitActionChanged(Qt::IgnoreAction); + manager->global_accepted_action = Qt::IgnoreAction; + manager->updateCursor(); + current_target = 0; + current_proxy_target = 0; + source_time = XCB_CURRENT_TIME; + waiting_for_status = false; +} + +void QXcbDrag::handleDrop(QWindow *, const xcb_client_message_event_t *event, bool passive) +{ + DEBUG("xdndHandleDrop"); + if (!currentWindow) { + xdnd_dragsource = 0; + return; // sanity + } + + // ### +// if (!passive && checkEmbedded(currentWindow, xe)){ +// current_embedding_widget = 0; +// xdnd_dragsource = 0; +// currentWindow = 0; +// return; +// } + const uint32_t *l = event->data.data32; + + QDragManager *manager = QDragManager::self(); + DEBUG("xdnd drop"); + + if (l[0] != xdnd_dragsource) { + DEBUG("xdnd drop from unexpected source (%x not %x", l[0], xdnd_dragsource); + return; + } + + // update the "user time" from the timestamp in the event. + if (l[2] != 0) + target_time = /*X11->userTime =*/ l[2]; + + if (!passive) { + // this could be a same-application drop, just proxied due to + // some XEMBEDding, so try to find the real QMimeData used + // based on the timestamp for this drop. + QMimeData *dropData = 0; + // ### +// int at = findXdndDropTransactionByTime(target_time); +// if (at != -1) +// dropData = QDragManager::dragPrivate(X11->dndDropTransactions.at(at).object)->data; + // if we can't find it, then use the data in the drag manager + if (!dropData) + dropData = manager->dropData(); + + // Drop coming from another app? Update keyboard modifiers. +// if (!qt_xdnd_dragging) { +// QApplicationPrivate::modifier_buttons = currentKeyboardModifiers(); +// } + + QDropEvent de(currentPosition, manager->possible_actions, dropData, + QGuiApplication::mouseButtons(), QGuiApplication::keyboardModifiers()); + QGuiApplication::sendEvent(currentWindow.data(), &de); + if (!de.isAccepted()) { + // Ignore a failed drag + manager->global_accepted_action = Qt::IgnoreAction; + } else { + manager->global_accepted_action = de.dropAction(); + } + xcb_client_message_event_t finished; + finished.response_type = XCB_CLIENT_MESSAGE; + finished.window = xdnd_dragsource; + finished.format = 32; + finished.type = atom(QXcbAtom::XdndFinished); + DNDDEBUG << "xdndHandleDrop" + << "currentWindow" << currentWindow.data() + << (currentWindow ? xcb_window(currentWindow.data()) : 0); + finished.data.data32[0] = currentWindow ? xcb_window(currentWindow.data()) : XCB_NONE; + finished.data.data32[1] = de.isAccepted() ? 1 : 0; // flags + finished.data.data32[2] = toXdndAction(manager->global_accepted_action); + Q_XCB_CALL(xcb_send_event(xcb_connection(), false, xdnd_dragsource, + XCB_EVENT_MASK_NO_EVENT, (char *)&finished)); + } else { + QDragLeaveEvent e; + QGuiApplication::sendEvent(currentWindow.data(), &e); + } + xdnd_dragsource = 0; + currentWindow.clear(); + waiting_for_status = false; + + // reset + target_time = XCB_CURRENT_TIME; +} + + +void QXcbDrag::handleFinished(const xcb_client_message_event_t *event, bool) +{ + DEBUG("xdndHandleFinished"); + if (event->window != connection()->clipboard()->owner()) + return; + + const unsigned long *l = (const unsigned long *)event->data.data32; + + DNDDEBUG << "xdndHandleFinished, l[0]" << l[0] + << "current_target" << current_target + << "qt_xdnd_current_proxy_targe" << current_proxy_target; + + if (l[0]) { + int at = findTransactionByWindow(l[0]); + if (at != -1) { + restartDropExpiryTimer(); + + Transaction t = transactions.takeAt(at); +// QDragManager *manager = QDragManager::self(); + +// Window target = current_target; +// Window proxy_target = current_proxy_target; +// QWidget *embedding_widget = current_embedding_widget; +// QDrag *currentObject = manager->object; + +// current_target = t.target; +// current_proxy_target = t.proxy_target; +// current_embedding_widget = t.embedding_widget; +// manager->object = t.object; + +// if (!passive) +// (void) checkEmbedded(currentWindow, xe); + +// current_embedding_widget = 0; +// current_target = 0; +// current_proxy_target = 0; + + if (t.object) + t.object->deleteLater(); + +// current_target = target; +// current_proxy_target = proxy_target; +// current_embedding_widget = embedding_widget; +// manager->object = currentObject; + } + } + waiting_for_status = false; +} + + +void QXcbDrag::timerEvent(QTimerEvent* e) +{ + if (e->timerId() == heartbeat && source_sameanswer.isNull()) { + QPointF pos = QCursor::pos(); + QMouseEvent me(QEvent::MouseMove, pos, pos, pos, Qt::LeftButton, + QGuiApplication::mouseButtons(), QGuiApplication::keyboardModifiers()); + move(&me); + } else if (e->timerId() == transaction_expiry_timer) { + for (int i = 0; i < transactions.count(); ++i) { + const Transaction &t = transactions.at(i); + if (t.targetWindow) { + // dnd within the same process, don't delete these + continue; + } + t.object->deleteLater(); + transactions.removeAt(i--); + } + + killTimer(transaction_expiry_timer); + transaction_expiry_timer = -1; + } +} + +void QXcbDrag::cancel() +{ + DEBUG("QXcbDrag::cancel"); + endDrag(); + + if (current_target) + send_leave(); + + current_target = 0; +} + +#if 0 + +static +Window findRealWindow(const QPoint & pos, Window w, int md) +{ + if (xdnd_data.deco && w == xdnd_data.deco->effectiveWinId()) + return 0; + + if (md) { + X11->ignoreBadwindow(); + XWindowAttributes attr; + XGetWindowAttributes(X11->display, w, &attr); + if (X11->badwindow()) + return 0; + + if (attr.map_state == IsViewable + && QRect(attr.x,attr.y,attr.width,attr.height).contains(pos)) { + { + Atom type = XNone; + int f; + unsigned long n, a; + unsigned char *data; + + XGetWindowProperty(X11->display, w, ATOM(XdndAware), 0, 0, False, + AnyPropertyType, &type, &f,&n,&a,&data); + if (data) XFree(data); + if (type) + return w; + } + + Window r, p; + Window* c; + uint nc; + if (XQueryTree(X11->display, w, &r, &p, &c, &nc)) { + r=0; + for (uint i=nc; !r && i--;) { + r = findRealWindow(pos-QPoint(attr.x,attr.y), + c[i], md-1); + } + XFree(c); + if (r) + return r; + + // We didn't find a client window! Just use the + // innermost window. + } + + // No children! + return w; + } + } + return 0; +} +#endif + +void QXcbDrag::handleSelectionRequest(const xcb_selection_request_event_t *event) +{ + xcb_selection_notify_event_t notify; + notify.response_type = XCB_SELECTION_NOTIFY; + notify.requestor = event->requestor; + notify.selection = event->selection; + notify.target = XCB_NONE; + notify.property = XCB_NONE; + notify.time = event->time; + + QDragManager *manager = QDragManager::self(); + QDrag *currentObject = manager->object; + + // which transaction do we use? (note: -2 means use current manager->object) + int at = -1; + + // figure out which data the requestor is really interested in + if (manager->object && event->time == source_time) { + // requestor wants the current drag data + at = -2; + } else { + // if someone has requested data in response to XdndDrop, find the corresponding transaction. the + // spec says to call XConvertSelection() using the timestamp from the XdndDrop + at = findTransactionByTime(event->time); + if (at == -1) { + // no dice, perhaps the client was nice enough to use the same window id in XConvertSelection() + // that we sent the XdndDrop event to. + at = findTransactionByWindow(event->requestor); + } +// if (at == -1 && event->time == XCB_CURRENT_TIME) { +// // previous Qt versions always requested the data on a child of the target window +// // using CurrentTime... but it could be asking for either drop data or the current drag's data +// Window target = findXdndAwareParent(event->requestor); +// if (target) { +// if (current_target && current_target == target) +// at = -2; +// else +// at = findXdndDropTransactionByWindow(target); +// } +// } + } + if (at >= 0) { + restartDropExpiryTimer(); + + // use the drag object from an XdndDrop tansaction + manager->object = transactions.at(at).object; + } else if (at != -2) { + // no transaction found, we'll have to reject the request + manager->object = 0; + } + if (manager->object) { + xcb_atom_t atomFormat = event->target; + int dataFormat = 0; + QByteArray data; + if (QXcbMime::mimeDataForAtom(connection(), event->target, manager->dragPrivate()->data, + &data, &atomFormat, &dataFormat)) { + int dataSize = data.size() / (dataFormat / 8); + xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, event->requestor, event->property, + atomFormat, dataFormat, dataSize, (const void *)data.constData()); + notify.property = event->property; + notify.target = atomFormat; + } + } + + // reset manager->object in case we modified it above + manager->object = currentObject; + + xcb_send_event(xcb_connection(), false, event->requestor, XCB_EVENT_MASK_NO_EVENT, (const char *)¬ify); +} + + +bool QXcbDrag::dndEnable(QXcbWindow *w, bool on) +{ + DNDDEBUG << "xdndEnable" << w << on; + if (on) { + QXcbWindow *xdnd_widget = 0; + if ((w->window()->windowType() == Qt::Desktop)) { + if (desktop_proxy) // *WE* already have one. + return false; + + xcb_grab_server(xcb_connection()); + + // As per Xdnd4, use XdndProxy + xcb_window_t proxy_id = xdndProxy(connection(), w->xcb_window()); + + if (!proxy_id) { + desktop_proxy = new QWindow; + xdnd_widget = static_cast<QXcbWindow *>(desktop_proxy->handle()); + proxy_id = xdnd_widget->xcb_window(); + xcb_atom_t xdnd_proxy = atom(QXcbAtom::XdndProxy); + xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, w->xcb_window(), xdnd_proxy, + XCB_ATOM_WINDOW, 32, 1, &proxy_id); + xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, proxy_id, xdnd_proxy, + XCB_ATOM_WINDOW, 32, 1, &proxy_id); + } + + xcb_ungrab_server(xcb_connection()); + } else { + xdnd_widget = w; + } + if (xdnd_widget) { + DNDDEBUG << "setting XdndAware for" << xdnd_widget << xdnd_widget->xcb_window(); + xcb_atom_t atm = xdnd_version; + xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, xdnd_widget->xcb_window(), + atom(QXcbAtom::XdndAware), XCB_ATOM_ATOM, 32, 1, &atm); + return true; + } else { + return false; + } + } else { + if ((w->window()->windowType() == Qt::Desktop)) { + xcb_delete_property(xcb_connection(), w->xcb_window(), atom(QXcbAtom::XdndProxy)); + delete desktop_proxy; + desktop_proxy = 0; + } else { + DNDDEBUG << "not deleting XDndAware"; + } + return true; + } +} + + + + +QDropData::QDropData(QXcbDrag *d) + : QXcbMime(), + drag(d) +{ +} + +QDropData::~QDropData() +{ +} + +QVariant QDropData::retrieveData_sys(const QString &mimetype, QVariant::Type requestedType) const +{ + QByteArray mime = mimetype.toLatin1(); + QVariant data = /*X11->motifdnd_active + ? X11->motifdndObtainData(mime) + :*/ xdndObtainData(mime, requestedType); + return data; +} + +QVariant QDropData::xdndObtainData(const QByteArray &format, QVariant::Type requestedType) const +{ + QByteArray result; + + QDragManager *manager = QDragManager::self(); + QXcbConnection *c = drag->connection(); + QXcbWindow *xcb_window = c->platformWindowFromId(drag->xdnd_dragsource); + if (xcb_window && manager->object && xcb_window->window()->windowType() != Qt::Desktop) { + QDragPrivate *o = manager->dragPrivate(); + if (o->data->hasFormat(QLatin1String(format))) + result = o->data->data(QLatin1String(format)); + return result; + } + + QList<xcb_atom_t> atoms = drag->xdnd_types; + QByteArray encoding; + xcb_atom_t a = mimeAtomForFormat(c, QLatin1String(format), requestedType, atoms, &encoding); + if (a == XCB_NONE) + return result; + + if (c->clipboard()->getSelectionOwner(drag->atom(QXcbAtom::XdndSelection)) == XCB_NONE) + return result; // should never happen? + + xcb_atom_t xdnd_selection = c->atom(QXcbAtom::XdndSelection); + result = c->clipboard()->getSelection(xdnd_selection, a, xdnd_selection); + + return mimeConvertToFormat(c, a, result, QLatin1String(format), requestedType, encoding); +} + + +bool QDropData::hasFormat_sys(const QString &format) const +{ + return formats().contains(format); +} + +QStringList QDropData::formats_sys() const +{ + QStringList formats; +// if (X11->motifdnd_active) { +// int i = 0; +// QByteArray fmt; +// while (!(fmt = X11->motifdndFormat(i)).isEmpty()) { +// formats.append(QLatin1String(fmt)); +// ++i; +// } +// } else { + for (int i = 0; i < drag->xdnd_types.size(); ++i) { + QString f = mimeAtomToString(drag->connection(), drag->xdnd_types.at(i)); + if (!formats.contains(f)) + formats.append(f); + } +// } + return formats; +} + +QT_END_NAMESPACE |