src/plugins/platforms/xcb/qxcbwindow.cpp

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  22 ** Alternatively, this file may be used under the terms of the GNU General
  23 ** Public License version 3.0 as published by the Free Software Foundation
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  41
  42 #include "qxcbwindow.h"
  43
  44 #include <QtDebug>
  45 #include <QScreen>
  46 #include <QtGui/QIcon>
  47 #include <QtGui/QRegion>
  48
  49 #include "qxcbconnection.h"
  50 #include "qxcbscreen.h"
  51 #include "qxcbdrag.h"
  52 #include "qxcbkeyboard.h"
  53 #include "qxcbwmsupport.h"
  54 #include "qxcbimage.h"
  55
  56 #include <qpa/qplatformintegration.h>
  57
  58 #ifdef XCB_USE_DRI2
  59 #include "qdri2context.h"
  60 #endif
  61
  62 // FIXME This workaround can be removed for xcb-icccm > 3.8
  63 #define class class_name
  64 #include <xcb/xcb_icccm.h>
  65 #undef class
  66 #include <xcb/xfixes.h>
  67
  68 // xcb-icccm 3.8 support
  69 #ifdef XCB_ICCCM_NUM_WM_SIZE_HINTS_ELEMENTS
  70 #define xcb_get_wm_hints_reply xcb_icccm_get_wm_hints_reply
  71 #define xcb_get_wm_hints xcb_icccm_get_wm_hints
  72 #define xcb_get_wm_hints_unchecked xcb_icccm_get_wm_hints_unchecked
  73 #define xcb_set_wm_hints xcb_icccm_set_wm_hints
  74 #define xcb_set_wm_normal_hints xcb_icccm_set_wm_normal_hints
  75 #define xcb_size_hints_set_base_size xcb_icccm_size_hints_set_base_size
  76 #define xcb_size_hints_set_max_size xcb_icccm_size_hints_set_max_size
  77 #define xcb_size_hints_set_min_size xcb_icccm_size_hints_set_min_size
  78 #define xcb_size_hints_set_position xcb_icccm_size_hints_set_position
  79 #define xcb_size_hints_set_resize_inc xcb_icccm_size_hints_set_resize_inc
  80 #define xcb_size_hints_set_size xcb_icccm_size_hints_set_size
  81 #define xcb_size_hints_set_win_gravity xcb_icccm_size_hints_set_win_gravity
  82 #define xcb_wm_hints_set_iconic xcb_icccm_wm_hints_set_iconic
  83 #define xcb_wm_hints_set_normal xcb_icccm_wm_hints_set_normal
  84 #define xcb_wm_hints_set_input xcb_icccm_wm_hints_set_input
  85 #define xcb_wm_hints_t xcb_icccm_wm_hints_t
  86 #define XCB_WM_STATE_ICONIC XCB_ICCCM_WM_STATE_ICONIC
  87 #define XCB_WM_STATE_WITHDRAWN XCB_ICCCM_WM_STATE_WITHDRAWN
  88 #endif
  89
  90 #include <private/qguiapplication_p.h>
  91 #include <private/qwindow_p.h>
  92
  93 #include <qpa/qplatformbackingstore.h>
  94 #include <qpa/qwindowsysteminterface.h>
  95
  96 #include <stdio.h>
  97
  98 #ifdef XCB_USE_XLIB
  99 #include <X11/Xlib.h>
 100 #include <X11/Xutil.h>
 101 #ifndef QT_NO_SHAPE
 102 #  include <X11/extensions/shape.h>
 103 #endif // QT_NO_SHAPE
 104 #endif
 105
 106 #if defined(XCB_USE_XINPUT2_MAEMO) || defined(XCB_USE_XINPUT2)
 107 #include <X11/extensions/XInput2.h>
 108 #endif
 109
 110 #if defined(XCB_USE_GLX)
 111 #include "qglxintegration.h"
 112 #include <QtPlatformSupport/private/qglxconvenience_p.h>
 113 #elif defined(XCB_USE_EGL)
 114 #include "qxcbeglsurface.h"
 115 #include <QtPlatformSupport/private/qeglconvenience_p.h>
 116 #include <QtPlatformSupport/private/qxlibeglintegration_p.h>
 117 #endif
 118
 119 #define XCOORD_MAX 16383
 120
 121 //#ifdef NET_WM_STATE_DEBUG
 122
 123 QT_BEGIN_NAMESPACE
 124
 125 // Returns true if we should set WM_TRANSIENT_FOR on \a w
 126 static inline bool isTransient(const QWindow *w)
 127 {
 128     return w->windowType() == Qt::Dialog
 129            || w->windowType() == Qt::Sheet
 130            || w->windowType() == Qt::Tool
 131            || w->windowType() == Qt::SplashScreen
 132            || w->windowType() == Qt::ToolTip
 133            || w->windowType() == Qt::Drawer
 134            || w->windowType() == Qt::Popup;
 135 }
 136
 137 static inline QImage::Format imageFormatForDepth(int depth)
 138 {
 139     switch (depth) {
 140         case 32: return QImage::Format_ARGB32_Premultiplied;
 141         case 24: return QImage::Format_RGB32;
 142         case 16: return QImage::Format_RGB16;
 143         default: return QImage::Format_Invalid;
 144     }
 145 }
 146
 147 static inline bool positionIncludesFrame(QWindow *w)
 148 {
 149     return qt_window_private(w)->positionPolicy == QWindowPrivate::WindowFrameInclusive;
 150 }
 151
 152 QXcbWindow::QXcbWindow(QWindow *window)
 153     : QPlatformWindow(window)
 154     , m_window(0)
 155     , m_syncCounter(0)
 156     , m_gravity(XCB_GRAVITY_STATIC)
 157     , m_mapped(false)
 158     , m_transparent(false)
 159     , m_deferredActivation(false)
 160     , m_netWmUserTimeWindow(XCB_NONE)
 161     , m_dirtyFrameMargins(false)
 162 #if defined(XCB_USE_EGL)
 163     , m_eglSurface(0)
 164 #endif
 165     , m_lastWindowStateEvent(-1)
 166 {
 167     m_screen = static_cast<QXcbScreen *>(window->screen()->handle());
 168
 169     setConnection(m_screen->connection());
 170
 171     create();
 172 }
 173
 174 void QXcbWindow::create()
 175 {
 176     destroy();
 177
 178     m_deferredExpose = false;
 179     m_configureNotifyPending = true;
 180     m_windowState = Qt::WindowNoState;
 181
 182     Qt::WindowType type = window()->windowType();
 183
 184     if (type == Qt::Desktop) {
 185         m_window = m_screen->root();
 186         m_depth = m_screen->screen()->root_depth;
 187         m_imageFormat = imageFormatForDepth(m_depth);
 188         connection()->addWindow(m_window, this);
 189         return;
 190     }
 191
 192     // Determine gravity from initial position. Do not change
 193     // later as it will cause the window to move uncontrollably.
 194     m_gravity = positionIncludesFrame(window()) ?
 195                 XCB_GRAVITY_NORTH_WEST : XCB_GRAVITY_STATIC;
 196
 197     const quint32 mask = XCB_CW_BACK_PIXMAP | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_SAVE_UNDER | XCB_CW_EVENT_MASK;
 198     const quint32 values[] = {
 199         // XCB_CW_BACK_PIXMAP
 200         XCB_NONE,
 201         // XCB_CW_OVERRIDE_REDIRECT
 202         type == Qt::Popup || type == Qt::ToolTip,
 203         // XCB_CW_SAVE_UNDER
 204         type == Qt::Popup || type == Qt::Tool || type == Qt::SplashScreen || type == Qt::ToolTip || type == Qt::Drawer,
 205         // XCB_CW_EVENT_MASK
 206         XCB_EVENT_MASK_EXPOSURE
 207         | XCB_EVENT_MASK_STRUCTURE_NOTIFY
 208         | XCB_EVENT_MASK_KEY_PRESS
 209         | XCB_EVENT_MASK_KEY_RELEASE
 210         | XCB_EVENT_MASK_BUTTON_PRESS
 211         | XCB_EVENT_MASK_BUTTON_RELEASE
 212         | XCB_EVENT_MASK_BUTTON_MOTION
 213         | XCB_EVENT_MASK_ENTER_WINDOW
 214         | XCB_EVENT_MASK_LEAVE_WINDOW
 215         | XCB_EVENT_MASK_POINTER_MOTION
 216         | XCB_EVENT_MASK_PROPERTY_CHANGE
 217         | XCB_EVENT_MASK_FOCUS_CHANGE
 218     };
 219
 220     // Parameters to XCreateWindow() are frame corner + inner size.
 221     // This fits in case position policy is frame inclusive. There is
 222     // currently no way to implement it for frame-exclusive geometries.
 223     QRect rect = window()->geometry();
 224     QPlatformWindow::setGeometry(rect);
 225
 226     rect.setWidth(qBound(1, rect.width(), XCOORD_MAX));
 227     rect.setHeight(qBound(1, rect.height(), XCOORD_MAX));
 228
 229     xcb_window_t xcb_parent_id = m_screen->root();
 230     if (parent())
 231         xcb_parent_id = static_cast<QXcbWindow *>(parent())->xcb_window();
 232
 233     m_format = window()->requestedFormat();
 234
 235 #if (defined(XCB_USE_GLX) || defined(XCB_USE_EGL)) && defined(XCB_USE_XLIB)
 236     if (QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::OpenGL)
 237         || m_format.hasAlpha())
 238     {
 239 #if defined(XCB_USE_GLX)
 240         XVisualInfo *visualInfo = qglx_findVisualInfo(DISPLAY_FROM_XCB(m_screen), m_screen->screenNumber(), &m_format);
 241         if (!visualInfo)
 242             qFatal("Could not initialize GLX");
 243 #elif defined(XCB_USE_EGL)
 244         EGLDisplay eglDisplay = connection()->egl_display();
 245         EGLConfig eglConfig = q_configFromGLFormat(eglDisplay, m_format, true);
 246         m_format = q_glFormatFromConfig(eglDisplay, eglConfig);
 247
 248         VisualID id = QXlibEglIntegration::getCompatibleVisualId(DISPLAY_FROM_XCB(this), eglDisplay, eglConfig);
 249
 250         XVisualInfo visualInfoTemplate;
 251         memset(&visualInfoTemplate, 0, sizeof(XVisualInfo));
 252         visualInfoTemplate.visualid = id;
 253
 254         XVisualInfo *visualInfo;
 255         int matchingCount = 0;
 256         visualInfo = XGetVisualInfo(DISPLAY_FROM_XCB(this), VisualIDMask, &visualInfoTemplate, &matchingCount);
 257         if (!visualInfo)
 258             qFatal("Could not initialize EGL");
 259 #endif //XCB_USE_GLX
 260         m_depth = visualInfo->depth;
 261         m_imageFormat = imageFormatForDepth(m_depth);
 262         Colormap cmap = XCreateColormap(DISPLAY_FROM_XCB(this), xcb_parent_id, visualInfo->visual, AllocNone);
 263
 264         XSetWindowAttributes a;
 265         a.background_pixel = WhitePixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 266         a.border_pixel = BlackPixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 267         a.colormap = cmap;
 268
 269         m_visualId = visualInfo->visualid;
 270
 271         m_window = XCreateWindow(DISPLAY_FROM_XCB(this), xcb_parent_id, rect.x(), rect.y(), rect.width(), rect.height(),
 272                                   0, visualInfo->depth, InputOutput, visualInfo->visual,
 273                                   CWBackPixel|CWBorderPixel|CWColormap, &a);
 274
 275         XFree(visualInfo);
 276     } else
 277 #endif //defined(XCB_USE_GLX) || defined(XCB_USE_EGL)
 278     {
 279         m_window = xcb_generate_id(xcb_connection());
 280         m_depth = m_screen->screen()->root_depth;
 281         m_imageFormat = imageFormatForDepth(m_depth);
 282         m_visualId = m_screen->screen()->root_visual;
 283
 284         Q_XCB_CALL(xcb_create_window(xcb_connection(),
 285                                      XCB_COPY_FROM_PARENT,            // depth -- same as root
 286                                      m_window,                        // window id
 287                                      xcb_parent_id,                   // parent window id
 288                                      rect.x(),
 289                                      rect.y(),
 290                                      rect.width(),
 291                                      rect.height(),
 292                                      0,                               // border width
 293                                      XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
 294                                      m_visualId,                      // visual
 295                                      0,                               // value mask
 296                                      0));                             // value list
 297     }
 298
 299     connection()->addWindow(m_window, this);
 300
 301     Q_XCB_CALL(xcb_change_window_attributes(xcb_connection(), m_window, mask, values));
 302
 303     propagateSizeHints();
 304
 305     xcb_atom_t properties[4];
 306     int propertyCount = 0;
 307     properties[propertyCount++] = atom(QXcbAtom::WM_DELETE_WINDOW);
 308     properties[propertyCount++] = atom(QXcbAtom::WM_TAKE_FOCUS);
 309     properties[propertyCount++] = atom(QXcbAtom::_NET_WM_PING);
 310
 311     if (m_screen->syncRequestSupported())
 312         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_SYNC_REQUEST);
 313
 314     if (window()->windowFlags() & Qt::WindowContextHelpButtonHint)
 315         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_CONTEXT_HELP);
 316
 317     Q_XCB_CALL(xcb_change_property(xcb_connection(),
 318                                    XCB_PROP_MODE_REPLACE,
 319                                    m_window,
 320                                    atom(QXcbAtom::WM_PROTOCOLS),
 321                                    XCB_ATOM_ATOM,
 322                                    32,
 323                                    propertyCount,
 324                                    properties));
 325     m_syncValue.hi = 0;
 326     m_syncValue.lo = 0;
 327
 328     if (m_screen->syncRequestSupported()) {
 329         m_syncCounter = xcb_generate_id(xcb_connection());
 330         Q_XCB_CALL(xcb_sync_create_counter(xcb_connection(), m_syncCounter, m_syncValue));
 331
 332         Q_XCB_CALL(xcb_change_property(xcb_connection(),
 333                                        XCB_PROP_MODE_REPLACE,
 334                                        m_window,
 335                                        atom(QXcbAtom::_NET_WM_SYNC_REQUEST_COUNTER),
 336                                        XCB_ATOM_CARDINAL,
 337                                        32,
 338                                        1,
 339                                        &m_syncCounter));
 340     }
 341
 342     // set the PID to let the WM kill the application if unresponsive
 343     long pid = getpid();
 344     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 345                                    atom(QXcbAtom::_NET_WM_PID), XCB_ATOM_CARDINAL, 32,
 346                                    1, &pid));
 347
 348     xcb_wm_hints_t hints;
 349     memset(&hints, 0, sizeof(hints));
 350     xcb_wm_hints_set_normal(&hints);
 351
 352     xcb_wm_hints_set_input(&hints, !(window()->windowFlags() & Qt::WindowDoesNotAcceptFocus));
 353
 354     xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 355
 356     xcb_window_t leader = m_screen->clientLeader();
 357     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 358                                    atom(QXcbAtom::WM_CLIENT_LEADER), XCB_ATOM_WINDOW, 32,
 359                                    1, &leader));
 360
 361 #ifdef XCB_USE_XINPUT2_MAEMO
 362     if (connection()->isUsingXInput2Maemo()) {
 363         XIEventMask xieventmask;
 364         uchar bitmask[2] = { 0, 0 };
 365
 366         xieventmask.deviceid = XIAllMasterDevices;
 367         xieventmask.mask = bitmask;
 368         xieventmask.mask_len = sizeof(bitmask);
 369
 370         XISetMask(bitmask, XI_ButtonPress);
 371         XISetMask(bitmask, XI_ButtonRelease);
 372         XISetMask(bitmask, XI_Motion);
 373
 374         XISelectEvents(DISPLAY_FROM_XCB(this), m_window, &xieventmask, 1);
 375     }
 376 #elif defined(XCB_USE_XINPUT2)
 377     connection()->xi2Select(m_window);
 378 #endif
 379
 380     setWindowFlags(window()->windowFlags());
 381     setWindowTitle(window()->windowTitle());
 382     setWindowState(window()->windowState());
 383
 384     if (window()->windowFlags() & Qt::WindowTransparentForInput)
 385         setTransparentForMouseEvents(true);
 386
 387 #ifndef QT_NO_DRAGANDDROP
 388     connection()->drag()->dndEnable(this, true);
 389 #endif
 390 }
 391
 392 QXcbWindow::~QXcbWindow()
 393 {
 394     destroy();
 395 }
 396
 397 void QXcbWindow::destroy()
 398 {
 399     if (m_syncCounter && m_screen->syncRequestSupported())
 400         Q_XCB_CALL(xcb_sync_destroy_counter(xcb_connection(), m_syncCounter));
 401     if (m_window) {
 402         if (m_netWmUserTimeWindow) {
 403             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
 404             // Some window managers, like metacity, do XSelectInput on the _NET_WM_USER_TIME_WINDOW window,
 405             // without trapping BadWindow (which crashes when the user time window is destroyed).
 406             connection()->sync();
 407             xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow);
 408             m_netWmUserTimeWindow = XCB_NONE;
 409         }
 410         connection()->removeWindow(m_window);
 411         Q_XCB_CALL(xcb_destroy_window(xcb_connection(), m_window));
 412     }
 413     m_mapped = false;
 414
 415 #if defined(XCB_USE_EGL)
 416     delete m_eglSurface;
 417     m_eglSurface = 0;
 418 #endif
 419 }
 420
 421 void QXcbWindow::setGeometry(const QRect &rect)
 422 {
 423     QPlatformWindow::setGeometry(rect);
 424
 425     propagateSizeHints();
 426     const QRect wmGeometry = windowToWmGeometry(rect);
 427
 428     const quint32 mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
 429     const qint32 values[] = {
 430         qBound<qint32>(-XCOORD_MAX, wmGeometry.x(),      XCOORD_MAX),
 431         qBound<qint32>(-XCOORD_MAX, wmGeometry.y(),      XCOORD_MAX),
 432         qBound<qint32>(1,           wmGeometry.width(),  XCOORD_MAX),
 433         qBound<qint32>(1,           wmGeometry.height(), XCOORD_MAX),
 434     };
 435
 436     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, reinterpret_cast<const quint32*>(values)));
 437
 438     xcb_flush(xcb_connection());
 439 }
 440
 441 QMargins QXcbWindow::frameMargins() const
 442 {
 443     if (m_dirtyFrameMargins) {
 444         xcb_window_t window = m_window;
 445         xcb_window_t parent = m_window;
 446
 447         bool foundRoot = false;
 448
 449         const QVector<xcb_window_t> &virtualRoots =
 450             connection()->wmSupport()->virtualRoots();
 451
 452         while (!foundRoot) {
 453             xcb_query_tree_cookie_t cookie = xcb_query_tree_unchecked(xcb_connection(), parent);
 454
 455             xcb_query_tree_reply_t *reply = xcb_query_tree_reply(xcb_connection(), cookie, NULL);
 456             if (reply) {
 457                 if (reply->root == reply->parent || virtualRoots.indexOf(reply->parent) != -1) {
 458                     foundRoot = true;
 459                 } else {
 460                     window = parent;
 461                     parent = reply->parent;
 462                 }
 463
 464                 free(reply);
 465             } else {
 466                 m_dirtyFrameMargins = false;
 467                 m_frameMargins = QMargins();
 468                 return m_frameMargins;
 469             }
 470         }
 471
 472         QPoint offset;
 473
 474         xcb_translate_coordinates_reply_t *reply =
 475             xcb_translate_coordinates_reply(
 476                 xcb_connection(),
 477                 xcb_translate_coordinates(xcb_connection(), window, parent, 0, 0),
 478                 NULL);
 479
 480         if (reply) {
 481             offset = QPoint(reply->dst_x, reply->dst_y);
 482             free(reply);
 483         }
 484
 485         xcb_get_geometry_reply_t *geom =
 486             xcb_get_geometry_reply(
 487                 xcb_connection(),
 488                 xcb_get_geometry(xcb_connection(), parent),
 489                 NULL);
 490
 491         if (geom) {
 492             // --
 493             // add the border_width for the window managers frame... some window managers
 494             // do not use a border_width of zero for their frames, and if we the left and
 495             // top strut, we ensure that pos() is absolutely correct.  frameGeometry()
 496             // will still be incorrect though... perhaps i should have foffset as well, to
 497             // indicate the frame offset (equal to the border_width on X).
 498             // - Brad
 499             // -- copied from qwidget_x11.cpp
 500
 501             int left = offset.x() + geom->border_width;
 502             int top = offset.y() + geom->border_width;
 503             int right = geom->width + geom->border_width - geometry().width() - offset.x();
 504             int bottom = geom->height + geom->border_width - geometry().height() - offset.y();
 505
 506             m_frameMargins = QMargins(left, top, right, bottom);
 507
 508             free(geom);
 509         }
 510
 511         m_dirtyFrameMargins = false;
 512     }
 513
 514     return m_frameMargins;
 515 }
 516
 517 void QXcbWindow::setVisible(bool visible)
 518 {
 519     if (visible)
 520         show();
 521     else
 522         hide();
 523 }
 524
 525 void QXcbWindow::show()
 526 {
 527     if (window()->isTopLevel()) {
 528         xcb_get_property_cookie_t cookie = xcb_get_wm_hints_unchecked(xcb_connection(), m_window);
 529
 530         xcb_wm_hints_t hints;
 531         xcb_get_wm_hints_reply(xcb_connection(), cookie, &hints, NULL);
 532
 533         if (window()->windowState() & Qt::WindowMinimized)
 534             xcb_wm_hints_set_iconic(&hints);
 535         else
 536             xcb_wm_hints_set_normal(&hints);
 537
 538         xcb_wm_hints_set_input(&hints, !(window()->windowFlags() & Qt::WindowDoesNotAcceptFocus));
 539
 540         xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 541
 542         // update WM_NORMAL_HINTS
 543         propagateSizeHints();
 544
 545         // update WM_TRANSIENT_FOR
 546         if (window()->transientParent() && isTransient(window())) {
 547             QXcbWindow *transientXcbParent = static_cast<QXcbWindow *>(window()->transientParent()->handle());
 548             if (transientXcbParent) {
 549                 // ICCCM 4.1.2.6
 550                 xcb_window_t parentWindow = transientXcbParent->xcb_window();
 551
 552                 // todo: set transient for group (wm_client_leader) if no parent, a la qwidget_x11.cpp
 553                 Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 554                                                XCB_ATOM_WM_TRANSIENT_FOR, XCB_ATOM_WINDOW, 32,
 555                                                1, &parentWindow));
 556             }
 557         }
 558
 559         // update _MOTIF_WM_HINTS
 560         updateMotifWmHintsBeforeMap();
 561
 562         // update _NET_WM_STATE
 563         updateNetWmStateBeforeMap();
 564     }
 565
 566     if (connection()->time() != XCB_TIME_CURRENT_TIME)
 567         updateNetWmUserTime(connection()->time());
 568
 569     Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 570     xcb_flush(xcb_connection());
 571
 572     connection()->sync();
 573 }
 574
 575 void QXcbWindow::hide()
 576 {
 577     Q_XCB_CALL(xcb_unmap_window(xcb_connection(), m_window));
 578
 579     // send synthetic UnmapNotify event according to icccm 4.1.4
 580     xcb_unmap_notify_event_t event;
 581     event.response_type = XCB_UNMAP_NOTIFY;
 582     event.event = m_screen->root();
 583     event.window = m_window;
 584     event.from_configure = false;
 585     Q_XCB_CALL(xcb_send_event(xcb_connection(), false, m_screen->root(),
 586                               XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event));
 587
 588     xcb_flush(xcb_connection());
 589
 590     m_mapped = false;
 591 }
 592
 593 struct QtMotifWmHints {
 594     quint32 flags, functions, decorations;
 595     qint32 input_mode;
 596     quint32 status;
 597 };
 598
 599 enum {
 600     MWM_HINTS_FUNCTIONS   = (1L << 0),
 601
 602     MWM_FUNC_ALL      = (1L << 0),
 603     MWM_FUNC_RESIZE   = (1L << 1),
 604     MWM_FUNC_MOVE     = (1L << 2),
 605     MWM_FUNC_MINIMIZE = (1L << 3),
 606     MWM_FUNC_MAXIMIZE = (1L << 4),
 607     MWM_FUNC_CLOSE    = (1L << 5),
 608
 609     MWM_HINTS_DECORATIONS = (1L << 1),
 610
 611     MWM_DECOR_ALL      = (1L << 0),
 612     MWM_DECOR_BORDER   = (1L << 1),
 613     MWM_DECOR_RESIZEH  = (1L << 2),
 614     MWM_DECOR_TITLE    = (1L << 3),
 615     MWM_DECOR_MENU     = (1L << 4),
 616     MWM_DECOR_MINIMIZE = (1L << 5),
 617     MWM_DECOR_MAXIMIZE = (1L << 6),
 618
 619     MWM_HINTS_INPUT_MODE = (1L << 2),
 620
 621     MWM_INPUT_MODELESS                  = 0L,
 622     MWM_INPUT_PRIMARY_APPLICATION_MODAL = 1L,
 623     MWM_INPUT_FULL_APPLICATION_MODAL    = 3L
 624 };
 625
 626 static QtMotifWmHints getMotifWmHints(QXcbConnection *c, xcb_window_t window)
 627 {
 628     QtMotifWmHints hints;
 629
 630     xcb_get_property_cookie_t get_cookie =
 631         xcb_get_property_unchecked(c->xcb_connection(), 0, window, c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 632                          c->atom(QXcbAtom::_MOTIF_WM_HINTS), 0, 20);
 633
 634     xcb_get_property_reply_t *reply =
 635         xcb_get_property_reply(c->xcb_connection(), get_cookie, NULL);
 636
 637     if (reply && reply->format == 32 && reply->type == c->atom(QXcbAtom::_MOTIF_WM_HINTS)) {
 638         hints = *((QtMotifWmHints *)xcb_get_property_value(reply));
 639     } else {
 640         hints.flags = 0L;
 641         hints.functions = MWM_FUNC_ALL;
 642         hints.decorations = MWM_DECOR_ALL;
 643         hints.input_mode = 0L;
 644         hints.status = 0L;
 645     }
 646
 647     free(reply);
 648
 649     return hints;
 650 }
 651
 652 static void setMotifWmHints(QXcbConnection *c, xcb_window_t window, const QtMotifWmHints &hints)
 653 {
 654     if (hints.flags != 0l) {
 655         Q_XCB_CALL2(xcb_change_property(c->xcb_connection(),
 656                                        XCB_PROP_MODE_REPLACE,
 657                                        window,
 658                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 659                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 660                                        32,
 661                                        5,
 662                                        &hints), c);
 663     } else {
 664         Q_XCB_CALL2(xcb_delete_property(c->xcb_connection(), window, c->atom(QXcbAtom::_MOTIF_WM_HINTS)), c);
 665     }
 666 }
 667
 668 QXcbWindow::NetWmStates QXcbWindow::netWmStates()
 669 {
 670     NetWmStates result(0);
 671
 672     xcb_get_property_cookie_t get_cookie =
 673         xcb_get_property_unchecked(xcb_connection(), 0, m_window, atom(QXcbAtom::_NET_WM_STATE),
 674                          XCB_ATOM_ATOM, 0, 1024);
 675
 676     xcb_get_property_reply_t *reply =
 677         xcb_get_property_reply(xcb_connection(), get_cookie, NULL);
 678
 679     if (reply && reply->format == 32 && reply->type == XCB_ATOM_ATOM) {
 680         const xcb_atom_t *states = static_cast<const xcb_atom_t *>(xcb_get_property_value(reply));
 681         const xcb_atom_t *statesEnd = states + reply->length;
 682         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_ABOVE)))
 683             result |= NetWmStateAbove;
 684         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_BELOW)))
 685             result |= NetWmStateBelow;
 686         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN)))
 687             result |= NetWmStateFullScreen;
 688         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ)))
 689             result |= NetWmStateMaximizedHorz;
 690         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT)))
 691             result |= NetWmStateMaximizedVert;
 692         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MODAL)))
 693             result |= NetWmStateModal;
 694         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP)))
 695             result |= NetWmStateStaysOnTop;
 696         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_DEMANDS_ATTENTION)))
 697             result |= NetWmStateDemandsAttention;
 698         free(reply);
 699     } else {
 700 #ifdef NET_WM_STATE_DEBUG
 701         printf("getting net wm state (%x), empty\n", m_window);
 702 #endif
 703     }
 704
 705     return result;
 706 }
 707
 708 void QXcbWindow::setNetWmStates(NetWmStates states)
 709 {
 710     QVector<xcb_atom_t> atoms;
 711     if (states & NetWmStateAbove)
 712         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_ABOVE));
 713     if (states & NetWmStateBelow)
 714         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_BELOW));
 715     if (states & NetWmStateFullScreen)
 716         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 717     if (states & NetWmStateMaximizedHorz)
 718         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ));
 719     if (states & NetWmStateMaximizedVert)
 720         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 721     if (states & NetWmStateModal)
 722         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MODAL));
 723     if (states & NetWmStateStaysOnTop)
 724         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP));
 725     if (states & NetWmStateDemandsAttention)
 726         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_DEMANDS_ATTENTION));
 727
 728     if (atoms.isEmpty()) {
 729         Q_XCB_CALL(xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_STATE)));
 730     } else {
 731         Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 732                                        atom(QXcbAtom::_NET_WM_STATE), XCB_ATOM_ATOM, 32,
 733                                        atoms.count(), atoms.constData()));
 734     }
 735     xcb_flush(xcb_connection());
 736 }
 737
 738 Qt::WindowFlags QXcbWindow::setWindowFlags(Qt::WindowFlags flags)
 739 {
 740     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 741
 742     if (type == Qt::ToolTip)
 743         flags |= Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint;
 744     if (type == Qt::Popup)
 745         flags |= Qt::X11BypassWindowManagerHint;
 746
 747     if (flags & Qt::WindowTransparentForInput) {
 748         uint32_t mask = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_VISIBILITY_CHANGE
 749                  | XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_RESIZE_REDIRECT
 750                 | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT
 751                 | XCB_EVENT_MASK_FOCUS_CHANGE  | XCB_EVENT_MASK_PROPERTY_CHANGE
 752                 | XCB_EVENT_MASK_COLOR_MAP_CHANGE | XCB_EVENT_MASK_OWNER_GRAB_BUTTON;
 753         xcb_change_window_attributes(xcb_connection(), xcb_window(), XCB_CW_EVENT_MASK, &mask);
 754     }
 755
 756     setNetWmWindowFlags(flags);
 757     setMotifWindowFlags(flags);
 758
 759     setTransparentForMouseEvents(flags & Qt::WindowTransparentForInput);
 760     updateDoesNotAcceptFocus(flags & Qt::WindowDoesNotAcceptFocus);
 761
 762     return flags;
 763 }
 764
 765 void QXcbWindow::setMotifWindowFlags(Qt::WindowFlags flags)
 766 {
 767     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 768
 769     QtMotifWmHints mwmhints;
 770     mwmhints.flags = 0L;
 771     mwmhints.functions = 0L;
 772     mwmhints.decorations = 0;
 773     mwmhints.input_mode = 0L;
 774     mwmhints.status = 0L;
 775
 776     if (type != Qt::SplashScreen) {
 777         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 778
 779         bool customize = flags & Qt::CustomizeWindowHint;
 780         if (!(flags & Qt::FramelessWindowHint) && !(customize && !(flags & Qt::WindowTitleHint))) {
 781             mwmhints.decorations |= MWM_DECOR_BORDER;
 782             mwmhints.decorations |= MWM_DECOR_RESIZEH;
 783
 784             if (flags & Qt::WindowTitleHint)
 785                 mwmhints.decorations |= MWM_DECOR_TITLE;
 786
 787             if (flags & Qt::WindowSystemMenuHint)
 788                 mwmhints.decorations |= MWM_DECOR_MENU;
 789
 790             if (flags & Qt::WindowMinimizeButtonHint) {
 791                 mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 792                 mwmhints.functions |= MWM_FUNC_MINIMIZE;
 793             }
 794
 795             if (flags & Qt::WindowMaximizeButtonHint) {
 796                 mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 797                 mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 798             }
 799
 800             if (flags & Qt::WindowCloseButtonHint)
 801                 mwmhints.functions |= MWM_FUNC_CLOSE;
 802         }
 803     } else {
 804         // if type == Qt::SplashScreen
 805         mwmhints.decorations = MWM_DECOR_ALL;
 806     }
 807
 808     if (mwmhints.functions != 0) {
 809         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 810         mwmhints.functions |= MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 811     } else {
 812         mwmhints.functions = MWM_FUNC_ALL;
 813     }
 814
 815     if (!(flags & Qt::FramelessWindowHint)
 816         && flags & Qt::CustomizeWindowHint
 817         && flags & Qt::WindowTitleHint
 818         && !(flags &
 819              (Qt::WindowMinimizeButtonHint
 820               | Qt::WindowMaximizeButtonHint
 821               | Qt::WindowCloseButtonHint)))
 822     {
 823         // a special case - only the titlebar without any button
 824         mwmhints.flags = MWM_HINTS_FUNCTIONS;
 825         mwmhints.functions = MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 826         mwmhints.decorations = 0;
 827     }
 828
 829     setMotifWmHints(connection(), m_window, mwmhints);
 830 }
 831
 832 void QXcbWindow::changeNetWmState(bool set, xcb_atom_t one, xcb_atom_t two)
 833 {
 834     xcb_client_message_event_t event;
 835
 836     event.response_type = XCB_CLIENT_MESSAGE;
 837     event.format = 32;
 838     event.window = m_window;
 839     event.type = atom(QXcbAtom::_NET_WM_STATE);
 840     event.data.data32[0] = set ? 1 : 0;
 841     event.data.data32[1] = one;
 842     event.data.data32[2] = two;
 843     event.data.data32[3] = 0;
 844     event.data.data32[4] = 0;
 845
 846     Q_XCB_CALL(xcb_send_event(xcb_connection(), 0, m_screen->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event));
 847 }
 848
 849 Qt::WindowState QXcbWindow::setWindowState(Qt::WindowState state)
 850 {
 851     if (state == m_windowState)
 852         return state;
 853
 854     // unset old state
 855     switch (m_windowState) {
 856     case Qt::WindowMinimized:
 857         Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 858         break;
 859     case Qt::WindowMaximized:
 860         changeNetWmState(false,
 861                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 862                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 863         break;
 864     case Qt::WindowFullScreen:
 865         changeNetWmState(false, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 866         break;
 867     default:
 868         break;
 869     }
 870
 871     // set new state
 872     switch (state) {
 873     case Qt::WindowMinimized:
 874         {
 875             xcb_client_message_event_t event;
 876
 877             event.response_type = XCB_CLIENT_MESSAGE;
 878             event.format = 32;
 879             event.window = m_window;
 880             event.type = atom(QXcbAtom::WM_CHANGE_STATE);
 881             event.data.data32[0] = XCB_WM_STATE_ICONIC;
 882             event.data.data32[1] = 0;
 883             event.data.data32[2] = 0;
 884             event.data.data32[3] = 0;
 885             event.data.data32[4] = 0;
 886
 887             Q_XCB_CALL(xcb_send_event(xcb_connection(), 0, m_screen->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event));
 888         }
 889         break;
 890     case Qt::WindowMaximized:
 891         changeNetWmState(true,
 892                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 893                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 894         break;
 895     case Qt::WindowFullScreen:
 896         changeNetWmState(true, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 897         break;
 898     case Qt::WindowNoState:
 899         break;
 900     default:
 901         break;
 902     }
 903
 904     connection()->sync();
 905
 906     m_windowState = state;
 907     return m_windowState;
 908 }
 909
 910 void QXcbWindow::setNetWmWindowFlags(Qt::WindowFlags flags)
 911 {
 912     // in order of decreasing priority
 913     QVector<uint> windowTypes;
 914
 915     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 916
 917     switch (type) {
 918     case Qt::Dialog:
 919     case Qt::Sheet:
 920         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DIALOG));
 921         break;
 922     case Qt::Tool:
 923     case Qt::Drawer:
 924         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_UTILITY));
 925         break;
 926     case Qt::ToolTip:
 927         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_TOOLTIP));
 928         break;
 929     case Qt::SplashScreen:
 930         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_SPLASH));
 931         break;
 932     default:
 933         break;
 934     }
 935
 936     if (flags & Qt::FramelessWindowHint)
 937         windowTypes.append(atom(QXcbAtom::_KDE_NET_WM_WINDOW_TYPE_OVERRIDE));
 938
 939     windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_NORMAL));
 940
 941     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 942                                    atom(QXcbAtom::_NET_WM_WINDOW_TYPE), XCB_ATOM_ATOM, 32,
 943                                    windowTypes.count(), windowTypes.constData()));
 944 }
 945
 946 void QXcbWindow::updateMotifWmHintsBeforeMap()
 947 {
 948     QtMotifWmHints mwmhints = getMotifWmHints(connection(), m_window);
 949
 950     if (window()->windowModality() != Qt::NonModal) {
 951         switch (window()->windowModality()) {
 952         case Qt::WindowModal:
 953             mwmhints.input_mode = MWM_INPUT_PRIMARY_APPLICATION_MODAL;
 954             break;
 955         case Qt::ApplicationModal:
 956         default:
 957             mwmhints.input_mode = MWM_INPUT_FULL_APPLICATION_MODAL;
 958             break;
 959         }
 960         mwmhints.flags |= MWM_HINTS_INPUT_MODE;
 961     } else {
 962         mwmhints.input_mode = MWM_INPUT_MODELESS;
 963         mwmhints.flags &= ~MWM_HINTS_INPUT_MODE;
 964     }
 965
 966     if (window()->minimumSize() == window()->maximumSize()) {
 967         // fixed size, remove the resize handle (since mwm/dtwm
 968         // isn't smart enough to do it itself)
 969         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 970         if (mwmhints.functions == MWM_FUNC_ALL) {
 971             mwmhints.functions = MWM_FUNC_MOVE;
 972         } else {
 973             mwmhints.functions &= ~MWM_FUNC_RESIZE;
 974         }
 975
 976         if (mwmhints.decorations == MWM_DECOR_ALL) {
 977             mwmhints.flags |= MWM_HINTS_DECORATIONS;
 978             mwmhints.decorations = (MWM_DECOR_BORDER
 979                                     | MWM_DECOR_TITLE
 980                                     | MWM_DECOR_MENU);
 981         } else {
 982             mwmhints.decorations &= ~MWM_DECOR_RESIZEH;
 983         }
 984     }
 985
 986     if (window()->windowFlags() & Qt::WindowMinimizeButtonHint) {
 987         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 988         mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 989         mwmhints.functions |= MWM_FUNC_MINIMIZE;
 990     }
 991     if (window()->windowFlags() & Qt::WindowMaximizeButtonHint) {
 992         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 993         mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 994         mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 995     }
 996     if (window()->windowFlags() & Qt::WindowCloseButtonHint)
 997         mwmhints.functions |= MWM_FUNC_CLOSE;
 998
 999     setMotifWmHints(connection(), m_window, mwmhints);
1000 }
1001
1002 void QXcbWindow::updateNetWmStateBeforeMap()
1003 {
1004     NetWmStates states(0);
1005
1006     const Qt::WindowFlags flags = window()->windowFlags();
1007     if (flags & Qt::WindowStaysOnTopHint) {
1008         states |= NetWmStateAbove;
1009         states |= NetWmStateStaysOnTop;
1010     } else if (flags & Qt::WindowStaysOnBottomHint) {
1011         states |= NetWmStateBelow;
1012     }
1013
1014     if (window()->windowState() & Qt::WindowFullScreen)
1015         states |= NetWmStateFullScreen;
1016
1017     if (window()->windowState() & Qt::WindowMaximized) {
1018         states |= NetWmStateMaximizedHorz;
1019         states |= NetWmStateMaximizedVert;
1020     }
1021
1022     if (window()->windowModality() != Qt::NonModal)
1023         states |= NetWmStateModal;
1024
1025     setNetWmStates(states);
1026 }
1027
1028 void QXcbWindow::updateNetWmUserTime(xcb_timestamp_t timestamp)
1029 {
1030     xcb_window_t wid = m_window;
1031
1032     const bool isSupportedByWM = connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
1033     if (m_netWmUserTimeWindow || isSupportedByWM) {
1034         if (!m_netWmUserTimeWindow) {
1035             m_netWmUserTimeWindow = xcb_generate_id(xcb_connection());
1036             Q_XCB_CALL(xcb_create_window(xcb_connection(),
1037                                          XCB_COPY_FROM_PARENT,            // depth -- same as root
1038                                          m_netWmUserTimeWindow,                        // window id
1039                                          m_window,                   // parent window id
1040                                          -1, -1, 1, 1,
1041                                          0,                               // border width
1042                                          XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
1043                                          m_visualId,                      // visual
1044                                          0,                               // value mask
1045                                          0));                             // value list
1046             wid = m_netWmUserTimeWindow;
1047             xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW),
1048                                 XCB_ATOM_WINDOW, 32, 1, &m_netWmUserTimeWindow);
1049             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME));
1050         } else if (!isSupportedByWM) {
1051             // WM no longer supports it, then we should remove the
1052             // _NET_WM_USER_TIME_WINDOW atom.
1053             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
1054             xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow);
1055             m_netWmUserTimeWindow = XCB_NONE;
1056         } else {
1057             wid = m_netWmUserTimeWindow;
1058         }
1059     }
1060     xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, wid, atom(QXcbAtom::_NET_WM_USER_TIME),
1061                         XCB_ATOM_CARDINAL, 32, 1, &timestamp);
1062 }
1063
1064 void QXcbWindow::setTransparentForMouseEvents(bool transparent)
1065 {
1066     if (transparent == m_transparent)
1067         return;
1068
1069     xcb_rectangle_t rectangle;
1070
1071     xcb_rectangle_t *rect = 0;
1072     int nrect = 0;
1073
1074     if (!transparent) {
1075         rectangle.x = 0;
1076         rectangle.y = 0;
1077         rectangle.width = geometry().width();
1078         rectangle.height = geometry().height();
1079         rect = &rectangle;
1080         nrect = 1;
1081     }
1082
1083     xcb_xfixes_region_t region = xcb_generate_id(xcb_connection());
1084     xcb_xfixes_create_region(xcb_connection(), region, nrect, rect);
1085     xcb_xfixes_set_window_shape_region_checked(xcb_connection(), m_window, XCB_SHAPE_SK_INPUT, 0, 0, region);
1086     xcb_xfixes_destroy_region(xcb_connection(), region);
1087
1088     m_transparent = transparent;
1089 }
1090
1091 void QXcbWindow::updateDoesNotAcceptFocus(bool doesNotAcceptFocus)
1092 {
1093     xcb_get_property_cookie_t cookie = xcb_get_wm_hints_unchecked(xcb_connection(), m_window);
1094
1095     xcb_wm_hints_t hints;
1096     if (!xcb_get_wm_hints_reply(xcb_connection(), cookie, &hints, NULL)) {
1097         return;
1098     }
1099
1100     xcb_wm_hints_set_input(&hints, !doesNotAcceptFocus);
1101     xcb_set_wm_hints(xcb_connection(), m_window, &hints);
1102 }
1103
1104 WId QXcbWindow::winId() const
1105 {
1106     return m_window;
1107 }
1108
1109 void QXcbWindow::setParent(const QPlatformWindow *parent)
1110 {
1111     // re-create for compatibility
1112     create();
1113
1114     QPoint topLeft = geometry().topLeft();
1115
1116     xcb_window_t xcb_parent_id = parent ? static_cast<const QXcbWindow *>(parent)->xcb_window() : m_screen->root();
1117     Q_XCB_CALL(xcb_reparent_window(xcb_connection(), xcb_window(), xcb_parent_id, topLeft.x(), topLeft.y()));
1118 }
1119
1120 void QXcbWindow::setWindowTitle(const QString &title)
1121 {
1122     QByteArray ba = title.toUtf8();
1123     Q_XCB_CALL(xcb_change_property(xcb_connection(),
1124                                    XCB_PROP_MODE_REPLACE,
1125                                    m_window,
1126                                    atom(QXcbAtom::_NET_WM_NAME),
1127                                    atom(QXcbAtom::UTF8_STRING),
1128                                    8,
1129                                    ba.length(),
1130                                    ba.constData()));
1131 }
1132
1133 void QXcbWindow::setWindowIcon(const QIcon &icon)
1134 {
1135     QVector<quint32> icon_data;
1136
1137     if (!icon.isNull()) {
1138         QList<QSize> availableSizes = icon.availableSizes();
1139         if (availableSizes.isEmpty()) {
1140             // try to use default sizes since the icon can be a scalable image like svg.
1141             availableSizes.push_back(QSize(16,16));
1142             availableSizes.push_back(QSize(32,32));
1143             availableSizes.push_back(QSize(64,64));
1144             availableSizes.push_back(QSize(128,128));
1145         }
1146         for (int i = 0; i < availableSizes.size(); ++i) {
1147             QSize size = availableSizes.at(i);
1148             QPixmap pixmap = icon.pixmap(size);
1149             if (!pixmap.isNull()) {
1150                 QImage image = pixmap.toImage().convertToFormat(QImage::Format_ARGB32);
1151                 int pos = icon_data.size();
1152                 icon_data.resize(pos + 2 + image.width()*image.height());
1153                 icon_data[pos++] = image.width();
1154                 icon_data[pos++] = image.height();
1155                 memcpy(icon_data.data() + pos, image.bits(), image.width()*image.height()*4);
1156             }
1157         }
1158     }
1159
1160     if (!icon_data.isEmpty()) {
1161         Q_XCB_CALL(xcb_change_property(xcb_connection(),
1162                                        XCB_PROP_MODE_REPLACE,
1163                                        m_window,
1164                                        atom(QXcbAtom::_NET_WM_ICON),
1165                                        atom(QXcbAtom::CARDINAL),
1166                                        32,
1167                                        icon_data.size(),
1168                                        (unsigned char *) icon_data.data()));
1169     } else {
1170         Q_XCB_CALL(xcb_delete_property(xcb_connection(),
1171                                        m_window,
1172                                        atom(QXcbAtom::_NET_WM_ICON)));
1173     }
1174 }
1175
1176 void QXcbWindow::raise()
1177 {
1178     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
1179     const quint32 values[] = { XCB_STACK_MODE_ABOVE };
1180     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
1181 }
1182
1183 void QXcbWindow::lower()
1184 {
1185     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
1186     const quint32 values[] = { XCB_STACK_MODE_BELOW };
1187     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
1188 }
1189
1190 // Adapt the geometry to match the WM expection with regards
1191 // to gravity.
1192 QRect QXcbWindow::windowToWmGeometry(QRect r) const
1193 {
1194     if (m_dirtyFrameMargins || m_frameMargins.isNull())
1195         return r;
1196     const bool frameInclusive = positionIncludesFrame(window());
1197     // XCB_GRAVITY_STATIC requires the inner geometry, whereas
1198     // XCB_GRAVITY_NORTH_WEST requires the frame geometry
1199     if (frameInclusive && m_gravity == XCB_GRAVITY_STATIC) {
1200         r.translate(m_frameMargins.left(), m_frameMargins.top());
1201     } else if (!frameInclusive && m_gravity == XCB_GRAVITY_NORTH_WEST) {
1202         r.translate(-m_frameMargins.left(), -m_frameMargins.top());
1203     }
1204     return r;
1205 }
1206
1207 void QXcbWindow::propagateSizeHints()
1208 {
1209     // update WM_NORMAL_HINTS
1210     xcb_size_hints_t hints;
1211     memset(&hints, 0, sizeof(hints));
1212
1213     const QRect rect = windowToWmGeometry(geometry());
1214
1215     QWindow *win = window();
1216
1217     xcb_size_hints_set_position(&hints, true, rect.x(), rect.y());
1218     xcb_size_hints_set_size(&hints, true, rect.width(), rect.height());
1219     xcb_size_hints_set_win_gravity(&hints, m_gravity);
1220
1221     QSize minimumSize = win->minimumSize();
1222     QSize maximumSize = win->maximumSize();
1223     QSize baseSize = win->baseSize();
1224     QSize sizeIncrement = win->sizeIncrement();
1225
1226     if (minimumSize.width() > 0 || minimumSize.height() > 0)
1227         xcb_size_hints_set_min_size(&hints, minimumSize.width(), minimumSize.height());
1228
1229     if (maximumSize.width() < QWINDOWSIZE_MAX || maximumSize.height() < QWINDOWSIZE_MAX)
1230         xcb_size_hints_set_max_size(&hints,
1231                                     qMin(XCOORD_MAX, maximumSize.width()),
1232                                     qMin(XCOORD_MAX, maximumSize.height()));
1233
1234     if (sizeIncrement.width() > 0 || sizeIncrement.height() > 0) {
1235         xcb_size_hints_set_base_size(&hints, baseSize.width(), baseSize.height());
1236         xcb_size_hints_set_resize_inc(&hints, sizeIncrement.width(), sizeIncrement.height());
1237     }
1238
1239     xcb_set_wm_normal_hints(xcb_connection(), m_window, &hints);
1240 }
1241
1242 void QXcbWindow::requestActivateWindow()
1243 {
1244     if (!m_mapped) {
1245         m_deferredActivation = true;
1246         return;
1247     }
1248     m_deferredActivation = false;
1249
1250     updateNetWmUserTime(connection()->time());
1251
1252     if (window()->isTopLevel()
1253         && connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_ACTIVE_WINDOW))) {
1254         xcb_client_message_event_t event;
1255
1256         event.response_type = XCB_CLIENT_MESSAGE;
1257         event.format = 32;
1258         event.window = m_window;
1259         event.type = atom(QXcbAtom::_NET_ACTIVE_WINDOW);
1260         event.data.data32[0] = 1;
1261         event.data.data32[1] = connection()->time();
1262         QWindow *focusWindow = QGuiApplication::focusWindow();
1263         event.data.data32[2] = focusWindow ? focusWindow->winId() : XCB_NONE;
1264         event.data.data32[3] = 0;
1265         event.data.data32[4] = 0;
1266
1267         Q_XCB_CALL(xcb_send_event(xcb_connection(), 0, m_screen->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event));
1268     } else {
1269         Q_XCB_CALL(xcb_set_input_focus(xcb_connection(), XCB_INPUT_FOCUS_PARENT, m_window, connection()->time()));
1270     }
1271
1272     connection()->sync();
1273 }
1274
1275 #if XCB_USE_MAEMO_WINDOW_PROPERTIES
1276 void QXcbWindow::handleContentOrientationChange(Qt::ScreenOrientation orientation)
1277 {
1278     int angle = 0;
1279     switch (orientation) {
1280         case Qt::PortraitOrientation: angle = 270; break;
1281         case Qt::LandscapeOrientation: angle = 0; break;
1282         case Qt::InvertedPortraitOrientation: angle = 90; break;
1283         case Qt::InvertedLandscapeOrientation: angle = 180; break;
1284         case Qt::PrimaryOrientation: break;
1285     }
1286     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
1287                                    atom(QXcbAtom::MeegoTouchOrientationAngle), XCB_ATOM_CARDINAL, 32,
1288                                    1, &angle));
1289 }
1290 #endif
1291
1292 QSurfaceFormat QXcbWindow::format() const
1293 {
1294     // ### return actual format
1295     return m_format;
1296 }
1297
1298 #if defined(XCB_USE_EGL)
1299 QXcbEGLSurface *QXcbWindow::eglSurface() const
1300 {
1301     if (!m_eglSurface) {
1302         EGLDisplay display = connection()->egl_display();
1303         EGLConfig config = q_configFromGLFormat(display, window()->requestedFormat(), true);
1304         EGLSurface surface = eglCreateWindowSurface(display, config, (EGLNativeWindowType)m_window, 0);
1305
1306         m_eglSurface = new QXcbEGLSurface(display, surface);
1307     }
1308
1309     return m_eglSurface;
1310 }
1311 #endif
1312
1313 void QXcbWindow::handleExposeEvent(const xcb_expose_event_t *event)
1314 {
1315     QRect rect(event->x, event->y, event->width, event->height);
1316
1317     if (m_exposeRegion.isEmpty())
1318         m_exposeRegion = rect;
1319     else
1320         m_exposeRegion |= rect;
1321
1322     // if count is non-zero there are more expose events pending
1323     if (event->count == 0) {
1324         QWindowSystemInterface::handleExposeEvent(window(), m_exposeRegion);
1325         m_exposeRegion = QRegion();
1326     }
1327 }
1328
1329 void QXcbWindow::handleClientMessageEvent(const xcb_client_message_event_t *event)
1330 {
1331     if (event->format != 32)
1332         return;
1333
1334     if (event->type == atom(QXcbAtom::WM_PROTOCOLS)) {
1335         if (event->data.data32[0] == atom(QXcbAtom::WM_DELETE_WINDOW)) {
1336             QWindowSystemInterface::handleCloseEvent(window());
1337         } else if (event->data.data32[0] == atom(QXcbAtom::WM_TAKE_FOCUS)) {
1338             connection()->setTime(event->data.data32[1]);
1339         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_PING)) {
1340             xcb_client_message_event_t reply = *event;
1341
1342             reply.response_type = XCB_CLIENT_MESSAGE;
1343             reply.window = m_screen->root();
1344
1345             xcb_send_event(xcb_connection(), 0, m_screen->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&reply);
1346             xcb_flush(xcb_connection());
1347         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_SYNC_REQUEST)) {
1348             connection()->setTime(event->data.data32[1]);
1349             m_syncValue.lo = event->data.data32[2];
1350             m_syncValue.hi = event->data.data32[3];
1351         } else {
1352             qWarning() << "QXcbWindow: Unhandled WM_PROTOCOLS message:" << connection()->atomName(event->data.data32[0]);
1353         }
1354 #ifndef QT_NO_DRAGANDDROP
1355     } else if (event->type == atom(QXcbAtom::XdndEnter)) {
1356         connection()->drag()->handleEnter(window(), event);
1357     } else if (event->type == atom(QXcbAtom::XdndPosition)) {
1358         connection()->drag()->handlePosition(window(), event);
1359     } else if (event->type == atom(QXcbAtom::XdndLeave)) {
1360         connection()->drag()->handleLeave(window(), event);
1361     } else if (event->type == atom(QXcbAtom::XdndDrop)) {
1362         connection()->drag()->handleDrop(window(), event);
1363 #endif
1364     } else if (event->type == atom(QXcbAtom::_XEMBED)) { // QSystemTrayIcon
1365     } else {
1366         qWarning() << "QXcbWindow: Unhandled client message:" << connection()->atomName(event->type);
1367     }
1368 }
1369
1370 void QXcbWindow::handleConfigureNotifyEvent(const xcb_configure_notify_event_t *event)
1371 {
1372     bool fromSendEvent = (event->response_type & 0x80);
1373     QPoint pos(event->x, event->y);
1374     if (!parent() && !fromSendEvent) {
1375         // Do not trust the position, query it instead.
1376         xcb_translate_coordinates_cookie_t cookie = xcb_translate_coordinates(xcb_connection(), xcb_window(),
1377                                                                               m_screen->root(), 0, 0);
1378         xcb_translate_coordinates_reply_t *reply = xcb_translate_coordinates_reply(xcb_connection(), cookie, NULL);
1379         if (reply) {
1380             pos.setX(reply->dst_x);
1381             pos.setY(reply->dst_y);
1382             free(reply);
1383         }
1384     }
1385
1386     QRect rect(pos, QSize(event->width, event->height));
1387
1388     QPlatformWindow::setGeometry(rect);
1389     QWindowSystemInterface::handleGeometryChange(window(), rect);
1390
1391     m_configureNotifyPending = false;
1392
1393     if (m_deferredExpose) {
1394         m_deferredExpose = false;
1395         QWindowSystemInterface::handleExposeEvent(window(), QRect(QPoint(), geometry().size()));
1396     }
1397
1398     m_dirtyFrameMargins = true;
1399
1400 #if XCB_USE_DRI2
1401     if (m_context)
1402         static_cast<QDri2Context *>(m_context)->resize(rect.size());
1403 #endif
1404 }
1405
1406 bool QXcbWindow::isExposed() const
1407 {
1408     return m_mapped;
1409 }
1410
1411 void QXcbWindow::handleMapNotifyEvent(const xcb_map_notify_event_t *event)
1412 {
1413     if (event->window == m_window) {
1414         m_mapped = true;
1415         if (m_deferredActivation)
1416             requestActivateWindow();
1417         if (m_configureNotifyPending)
1418             m_deferredExpose = true;
1419         else
1420             QWindowSystemInterface::handleExposeEvent(window(), QRect(QPoint(), geometry().size()));
1421     }
1422 }
1423
1424 void QXcbWindow::handleUnmapNotifyEvent(const xcb_unmap_notify_event_t *event)
1425 {
1426     if (event->window == m_window) {
1427         m_mapped = false;
1428         QWindowSystemInterface::handleExposeEvent(window(), QRegion());
1429     }
1430 }
1431
1432 static Qt::MouseButtons translateMouseButtons(int s)
1433 {
1434     Qt::MouseButtons ret = 0;
1435     if (s & XCB_BUTTON_MASK_1)
1436         ret |= Qt::LeftButton;
1437     if (s & XCB_BUTTON_MASK_2)
1438         ret |= Qt::MidButton;
1439     if (s & XCB_BUTTON_MASK_3)
1440         ret |= Qt::RightButton;
1441     return ret;
1442 }
1443
1444 static Qt::MouseButton translateMouseButton(xcb_button_t s)
1445 {
1446     switch (s) {
1447     case 1: return Qt::LeftButton;
1448     case 2: return Qt::MidButton;
1449     case 3: return Qt::RightButton;
1450     // Button values 4-7 were already handled as Wheel events, and won't occur here.
1451     case 8: return Qt::BackButton;      // Also known as Qt::ExtraButton1
1452     case 9: return Qt::ForwardButton;   // Also known as Qt::ExtraButton2
1453     case 10: return Qt::ExtraButton3;
1454     case 11: return Qt::ExtraButton4;
1455     case 12: return Qt::ExtraButton5;
1456     case 13: return Qt::ExtraButton6;
1457     case 14: return Qt::ExtraButton7;
1458     case 15: return Qt::ExtraButton8;
1459     case 16: return Qt::ExtraButton9;
1460     case 17: return Qt::ExtraButton10;
1461     case 18: return Qt::ExtraButton11;
1462     case 19: return Qt::ExtraButton12;
1463     case 20: return Qt::ExtraButton13;
1464     case 21: return Qt::ExtraButton14;
1465     case 22: return Qt::ExtraButton15;
1466     case 23: return Qt::ExtraButton16;
1467     case 24: return Qt::ExtraButton17;
1468     case 25: return Qt::ExtraButton18;
1469     case 26: return Qt::ExtraButton19;
1470     case 27: return Qt::ExtraButton20;
1471     case 28: return Qt::ExtraButton21;
1472     case 29: return Qt::ExtraButton22;
1473     case 30: return Qt::ExtraButton23;
1474     case 31: return Qt::ExtraButton24;
1475     default: return Qt::NoButton;
1476     }
1477 }
1478
1479 void QXcbWindow::handleButtonPressEvent(const xcb_button_press_event_t *event)
1480 {
1481     updateNetWmUserTime(event->time);
1482
1483     QPoint local(event->event_x, event->event_y);
1484     QPoint global(event->root_x, event->root_y);
1485
1486     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1487
1488     if (event->detail >= 4 && event->detail <= 7) {
1489         // Logic borrowed from qapplication_x11.cpp
1490         int delta = 120 * ((event->detail == 4 || event->detail == 6) ? 1 : -1);
1491         bool hor = (((event->detail == 4 || event->detail == 5)
1492                      && (modifiers & Qt::AltModifier))
1493                     || (event->detail == 6 || event->detail == 7));
1494
1495         QWindowSystemInterface::handleWheelEvent(window(), event->time,
1496                                                  local, global, delta, hor ? Qt::Horizontal : Qt::Vertical, modifiers);
1497         return;
1498     }
1499
1500     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1501 }
1502
1503 void QXcbWindow::handleButtonReleaseEvent(const xcb_button_release_event_t *event)
1504 {
1505     QPoint local(event->event_x, event->event_y);
1506     QPoint global(event->root_x, event->root_y);
1507     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1508
1509     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1510 }
1511
1512 void QXcbWindow::handleMotionNotifyEvent(const xcb_motion_notify_event_t *event)
1513 {
1514     QPoint local(event->event_x, event->event_y);
1515     QPoint global(event->root_x, event->root_y);
1516     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1517
1518     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1519 }
1520
1521 void QXcbWindow::handleMouseEvent(xcb_button_t detail, uint16_t state, xcb_timestamp_t time, const QPoint &local, const QPoint &global, Qt::KeyboardModifiers modifiers)
1522 {
1523     connection()->setTime(time);
1524
1525     Qt::MouseButtons buttons = translateMouseButtons(state);
1526     Qt::MouseButton button = translateMouseButton(detail);
1527
1528     buttons ^= button; // X event uses state *before*, Qt uses state *after*
1529
1530     QWindowSystemInterface::handleMouseEvent(window(), time, local, global, buttons, modifiers);
1531 }
1532
1533 void QXcbWindow::handleEnterNotifyEvent(const xcb_enter_notify_event_t *event)
1534 {
1535     connection()->setTime(event->time);
1536
1537     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1538         || event->detail == XCB_NOTIFY_DETAIL_VIRTUAL
1539         || event->detail == XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL)
1540     {
1541         return;
1542     }
1543
1544     QWindowSystemInterface::handleEnterEvent(window());
1545 }
1546
1547 void QXcbWindow::handleLeaveNotifyEvent(const xcb_leave_notify_event_t *event)
1548 {
1549     connection()->setTime(event->time);
1550
1551     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1552         || event->detail == XCB_NOTIFY_DETAIL_INFERIOR)
1553     {
1554         return;
1555     }
1556
1557     QWindowSystemInterface::handleLeaveEvent(window());
1558 }
1559
1560 void QXcbWindow::handlePropertyNotifyEvent(const xcb_property_notify_event_t *event)
1561 {
1562     connection()->setTime(event->time);
1563
1564     const bool propertyDeleted = event->state == XCB_PROPERTY_DELETE;
1565     const xcb_atom_t netWmStateAtom = atom(QXcbAtom::_NET_WM_STATE);
1566     const xcb_atom_t wmStateAtom = atom(QXcbAtom::WM_STATE);
1567
1568     if (event->atom == netWmStateAtom || event->atom == wmStateAtom) {
1569         if (propertyDeleted)
1570             return;
1571
1572         Qt::WindowState newState = Qt::WindowNoState;
1573         if (event->atom == wmStateAtom) { // WM_STATE: Quick check for 'Minimize'.
1574             const xcb_get_property_cookie_t get_cookie =
1575                 xcb_get_property(xcb_connection(), 0, m_window, wmStateAtom,
1576                                  XCB_ATOM_ANY, 0, 1024);
1577
1578             xcb_get_property_reply_t *reply =
1579                 xcb_get_property_reply(xcb_connection(), get_cookie, NULL);
1580
1581             if (reply && reply->format == 32 && reply->type == wmStateAtom) {
1582                 const long *data = (const long *)xcb_get_property_value(reply);
1583                 if (reply->length != 0 && XCB_WM_STATE_ICONIC == data[0])
1584                     newState = Qt::WindowMinimized;
1585                 free(reply);
1586             }
1587         } // WM_STATE: Quick check for 'Minimize'.
1588         if (newState != Qt::WindowMinimized) { // Something else changed, get _NET_WM_STATE.
1589             const NetWmStates states = netWmStates();
1590             if ((states & NetWmStateMaximizedHorz) && (states & NetWmStateMaximizedVert))
1591                 newState = Qt::WindowMaximized;
1592             else if (states & NetWmStateFullScreen)
1593                 newState = Qt::WindowFullScreen;
1594         }
1595         // Send Window state, compress events in case other flags (modality, etc) are changed.
1596         if (m_lastWindowStateEvent != newState) {
1597             QWindowSystemInterface::handleWindowStateChanged(window(), newState);
1598             m_lastWindowStateEvent = newState;
1599         }
1600     }
1601 }
1602
1603 void QXcbWindow::handleFocusInEvent(const xcb_focus_in_event_t *)
1604 {
1605     QWindowSystemInterface::handleWindowActivated(window());
1606 }
1607
1608 static bool focusInPeeker(xcb_generic_event_t *event)
1609 {
1610     if (!event) {
1611         // FocusIn event is not in the queue, proceed with FocusOut normally.
1612         QWindowSystemInterface::handleWindowActivated(0);
1613         return true;
1614     }
1615     uint response_type = event->response_type & ~0x80;
1616     return response_type == XCB_FOCUS_IN;
1617 }
1618
1619 void QXcbWindow::handleFocusOutEvent(const xcb_focus_out_event_t *)
1620 {
1621     // Do not set the active window to 0 if there is a FocusIn coming.
1622     // There is however no equivalent for XPutBackEvent so register a
1623     // callback for QXcbConnection instead.
1624     connection()->addPeekFunc(focusInPeeker);
1625 }
1626
1627 void QXcbWindow::updateSyncRequestCounter()
1628 {
1629     if (m_screen->syncRequestSupported() && (m_syncValue.lo != 0 || m_syncValue.hi != 0)) {
1630         Q_XCB_CALL(xcb_sync_set_counter(xcb_connection(), m_syncCounter, m_syncValue));
1631         xcb_flush(xcb_connection());
1632         connection()->sync();
1633
1634         m_syncValue.lo = 0;
1635         m_syncValue.hi = 0;
1636     }
1637 }
1638
1639 bool QXcbWindow::setKeyboardGrabEnabled(bool grab)
1640 {
1641     if (!grab) {
1642         xcb_ungrab_keyboard(xcb_connection(), XCB_TIME_CURRENT_TIME);
1643         return true;
1644     }
1645     xcb_grab_keyboard_cookie_t cookie = xcb_grab_keyboard(xcb_connection(), false,
1646                                                           m_window, XCB_TIME_CURRENT_TIME,
1647                                                           XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
1648     xcb_grab_keyboard_reply_t *reply = xcb_grab_keyboard_reply(xcb_connection(), cookie, NULL);
1649     bool result = !(!reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1650     free(reply);
1651     return result;
1652 }
1653
1654 bool QXcbWindow::setMouseGrabEnabled(bool grab)
1655 {
1656     if (!grab) {
1657         xcb_ungrab_pointer(xcb_connection(), XCB_TIME_CURRENT_TIME);
1658         return true;
1659     }
1660     xcb_grab_pointer_cookie_t cookie = xcb_grab_pointer(xcb_connection(), false, m_window,
1661                                                         (XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE
1662                                                          | XCB_EVENT_MASK_BUTTON_MOTION | XCB_EVENT_MASK_ENTER_WINDOW
1663                                                          | XCB_EVENT_MASK_LEAVE_WINDOW | XCB_EVENT_MASK_POINTER_MOTION),
1664                                                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC,
1665                                                         XCB_WINDOW_NONE, XCB_CURSOR_NONE,
1666                                                         XCB_TIME_CURRENT_TIME);
1667     xcb_grab_pointer_reply_t *reply = xcb_grab_pointer_reply(xcb_connection(), cookie, NULL);
1668     bool result = !(!reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1669     free(reply);
1670     return result;
1671 }
1672
1673 void QXcbWindow::setCursor(xcb_cursor_t cursor)
1674 {
1675     xcb_change_window_attributes(xcb_connection(), m_window, XCB_CW_CURSOR, &cursor);
1676     xcb_flush(xcb_connection());
1677 }
1678
1679 bool QXcbWindow::startSystemResize(const QPoint &pos, Qt::Corner corner)
1680 {
1681     const xcb_atom_t moveResize = connection()->atom(QXcbAtom::_NET_WM_MOVERESIZE);
1682     if (!connection()->wmSupport()->isSupportedByWM(moveResize))
1683         return false;
1684     xcb_client_message_event_t xev;
1685     xev.response_type = XCB_CLIENT_MESSAGE;
1686     xev.type = moveResize;
1687     xev.window = xcb_window();
1688     xev.format = 32;
1689     const QPoint globalPos = window()->mapToGlobal(pos);
1690     xev.data.data32[0] = globalPos.x();
1691     xev.data.data32[1] = globalPos.y();
1692     const bool bottom = corner == Qt::BottomRightCorner || corner == Qt::BottomLeftCorner;
1693     const bool left = corner == Qt::BottomLeftCorner || corner == Qt::TopLeftCorner;
1694     if (bottom)
1695         xev.data.data32[2] = left ? 6 : 4; // bottomleft/bottomright
1696     else
1697         xev.data.data32[2] = left ? 0 : 2; // topleft/topright
1698     xev.data.data32[3] = XCB_BUTTON_INDEX_1;
1699     xev.data.data32[4] = 0;
1700     xcb_ungrab_pointer(connection()->xcb_connection(), XCB_CURRENT_TIME);
1701     xcb_send_event(connection()->xcb_connection(), false, m_screen->root(),
1702                    XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY,
1703                    (const char *)&xev);
1704     return true;
1705 }
1706
1707 #if defined(XCB_USE_XLIB) && !defined(QT_NO_SHAPE)
1708
1709 static inline XRectangle qRectToX11Rectangle(const QRect &r)
1710 {
1711     XRectangle result;
1712     result.x = qMax(SHRT_MIN, r.x());
1713     result.y = qMax(SHRT_MIN, r.y());
1714     result.width = qMin((int)USHRT_MAX, r.width());
1715     result.height = qMin((int)USHRT_MAX, r.height());
1716     return result;
1717 }
1718
1719 static inline Region qRegionToX11Region(const QRegion &region)
1720 {
1721     if (region.isEmpty())
1722         return None;
1723     Region result = XCreateRegion();
1724     if (!result)
1725         return None;
1726     const QVector<QRect> rects = region.rects();
1727     if (rects.size() == 1) {
1728         XRectangle xrect = qRectToX11Rectangle(region.boundingRect());
1729         XUnionRectWithRegion(&xrect, result, result);
1730     } else {
1731         foreach (const QRect &r, rects) {
1732             XRectangle xrect = qRectToX11Rectangle(r);
1733             XUnionRectWithRegion(&xrect, result, result);
1734         }
1735     }
1736     return result;
1737 }
1738
1739
1740 void QXcbWindow::setMask(const QRegion &region)
1741 {
1742
1743     Display *display = (Display *)connection()->xlib_display();
1744     if (region.isEmpty()) {
1745         XShapeCombineMask(display, xcb_window(),
1746                           ShapeBounding, 0, 0,
1747                           None, ShapeSet);
1748     } else {
1749         XShapeCombineRegion(display, xcb_window(),
1750                             ShapeBounding, 0, 0,
1751                             qRegionToX11Region(region), ShapeSet);
1752     }
1753 }
1754
1755 #endif // XCB_USE_XLIB && !QT_NO_SHAPE
1756
1757 QT_END_NAMESPACE