src/plugins/platforms/xcb/qxcbwindow.cpp

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  41
  42 #include "qxcbwindow.h"
  43
  44 #include <QtDebug>
  45 #include <QScreen>
  46
  47 #include "qxcbconnection.h"
  48 #include "qxcbscreen.h"
  49 #include "qxcbdrag.h"
  50 #include "qxcbwmsupport.h"
  51
  52 #ifdef XCB_USE_DRI2
  53 #include "qdri2context.h"
  54 #endif
  55
  56 #include <xcb/xcb_icccm.h>
  57
  58 #include <private/qguiapplication_p.h>
  59 #include <private/qwindow_p.h>
  60
  61 #include <QtGui/QPlatformBackingStore>
  62 #include <QtGui/QWindowSystemInterface>
  63
  64 #include <stdio.h>
  65
  66 #ifdef XCB_USE_XLIB
  67 #include <X11/Xlib.h>
  68 #include <X11/Xutil.h>
  69 #endif
  70
  71 #if defined(XCB_USE_GLX)
  72 #include "qglxintegration.h"
  73 #include <QtPlatformSupport/private/qglxconvenience_p.h>
  74 #elif defined(XCB_USE_EGL)
  75 #include "qxcbeglsurface.h"
  76 #include <QtPlatformSupport/private/qeglconvenience_p.h>
  77 #include <QtPlatformSupport/private/qxlibeglintegration_p.h>
  78 #endif
  79
  80 #define XCOORD_MAX 16383
  81
  82 //#ifdef NET_WM_STATE_DEBUG
  83
  84 // Returns true if we should set WM_TRANSIENT_FOR on \a w
  85 static inline bool isTransient(const QWindow *w)
  86 {
  87     return w->windowType() == Qt::Dialog
  88            || w->windowType() == Qt::Sheet
  89            || w->windowType() == Qt::Tool
  90            || w->windowType() == Qt::SplashScreen
  91            || w->windowType() == Qt::ToolTip
  92            || w->windowType() == Qt::Drawer
  93            || w->windowType() == Qt::Popup;
  94 }
  95
  96 QXcbWindow::QXcbWindow(QWindow *window)
  97     : QPlatformWindow(window)
  98     , m_window(0)
  99     , m_syncCounter(0)
 100     , m_mapped(false)
 101     , m_netWmUserTimeWindow(XCB_NONE)
 102 #if defined(XCB_USE_EGL)
 103     , m_eglSurface(0)
 104 #endif
 105 {
 106     m_screen = static_cast<QXcbScreen *>(window->screen()->handle());
 107
 108     setConnection(m_screen->connection());
 109
 110     create();
 111 }
 112
 113 void QXcbWindow::create()
 114 {
 115     bool wasCreated = (m_window != 0);
 116     destroy();
 117
 118     m_windowState = Qt::WindowNoState;
 119     m_hasReceivedSyncRequest = false;
 120     m_dirtyFrameMargins = true;
 121
 122     Qt::WindowType type = window()->windowType();
 123
 124     if (type == Qt::Desktop) {
 125         m_window = m_screen->root();
 126         m_depth = m_screen->screen()->root_depth;
 127         m_imageFormat = (m_depth == 32) ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32;
 128         connection()->addWindow(m_window, this);
 129         return;
 130     }
 131
 132     const quint32 mask = XCB_CW_BACK_PIXMAP | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_SAVE_UNDER | XCB_CW_EVENT_MASK;
 133     const quint32 values[] = {
 134         // XCB_CW_BACK_PIXMAP
 135         XCB_NONE,
 136         // XCB_CW_OVERRIDE_REDIRECT
 137         type == Qt::Popup || type == Qt::ToolTip,
 138         // XCB_CW_SAVE_UNDER
 139         type == Qt::Popup || type == Qt::Tool || type == Qt::SplashScreen || type == Qt::ToolTip || type == Qt::Drawer,
 140         // XCB_CW_EVENT_MASK
 141         XCB_EVENT_MASK_EXPOSURE
 142         | XCB_EVENT_MASK_STRUCTURE_NOTIFY
 143         | XCB_EVENT_MASK_KEY_PRESS
 144         | XCB_EVENT_MASK_KEY_RELEASE
 145         | XCB_EVENT_MASK_BUTTON_PRESS
 146         | XCB_EVENT_MASK_BUTTON_RELEASE
 147         | XCB_EVENT_MASK_BUTTON_MOTION
 148         | XCB_EVENT_MASK_ENTER_WINDOW
 149         | XCB_EVENT_MASK_LEAVE_WINDOW
 150         | XCB_EVENT_MASK_POINTER_MOTION
 151         | XCB_EVENT_MASK_PROPERTY_CHANGE
 152         | XCB_EVENT_MASK_FOCUS_CHANGE
 153     };
 154
 155     QRect rect = window()->geometry();
 156     QPlatformWindow::setGeometry(rect);
 157
 158     xcb_window_t xcb_parent_id = m_screen->root();
 159     if (parent())
 160         xcb_parent_id = static_cast<QXcbWindow *>(parent())->xcb_window();
 161
 162     m_requestedFormat = window()->format();
 163
 164 #if defined(XCB_USE_GLX) || defined(XCB_USE_EGL)
 165     if (QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::OpenGL)
 166         || window()->format().hasAlpha())
 167     {
 168 #if defined(XCB_USE_GLX)
 169         XVisualInfo *visualInfo = qglx_findVisualInfo(DISPLAY_FROM_XCB(m_screen),m_screen->screenNumber(), window()->format());
 170
 171 #elif defined(XCB_USE_EGL)
 172         EGLDisplay eglDisplay = connection()->egl_display();
 173         EGLConfig eglConfig = q_configFromGLFormat(eglDisplay, window()->format(), true);
 174         VisualID id = QXlibEglIntegration::getCompatibleVisualId(DISPLAY_FROM_XCB(this), eglDisplay, eglConfig);
 175
 176         XVisualInfo visualInfoTemplate;
 177         memset(&visualInfoTemplate, 0, sizeof(XVisualInfo));
 178         visualInfoTemplate.visualid = id;
 179
 180         XVisualInfo *visualInfo;
 181         int matchingCount = 0;
 182         visualInfo = XGetVisualInfo(DISPLAY_FROM_XCB(this), VisualIDMask, &visualInfoTemplate, &matchingCount);
 183 #endif //XCB_USE_GLX
 184         if (visualInfo) {
 185             m_depth = visualInfo->depth;
 186             m_imageFormat = (m_depth == 32) ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32;
 187             Colormap cmap = XCreateColormap(DISPLAY_FROM_XCB(this), xcb_parent_id, visualInfo->visual, AllocNone);
 188
 189             XSetWindowAttributes a;
 190             a.background_pixel = WhitePixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 191             a.border_pixel = BlackPixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 192             a.colormap = cmap;
 193             m_window = XCreateWindow(DISPLAY_FROM_XCB(this), xcb_parent_id, rect.x(), rect.y(), rect.width(), rect.height(),
 194                                       0, visualInfo->depth, InputOutput, visualInfo->visual,
 195                                       CWBackPixel|CWBorderPixel|CWColormap, &a);
 196         } else {
 197             qFatal("no window!");
 198         }
 199     } else
 200 #endif //defined(XCB_USE_GLX) || defined(XCB_USE_EGL)
 201     {
 202         m_window = xcb_generate_id(xcb_connection());
 203         m_depth = m_screen->screen()->root_depth;
 204         m_imageFormat = (m_depth == 32) ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32;
 205
 206         Q_XCB_CALL(xcb_create_window(xcb_connection(),
 207                                      XCB_COPY_FROM_PARENT,            // depth -- same as root
 208                                      m_window,                        // window id
 209                                      xcb_parent_id,                   // parent window id
 210                                      rect.x(),
 211                                      rect.y(),
 212                                      rect.width(),
 213                                      rect.height(),
 214                                      0,                               // border width
 215                                      XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
 216                                      m_screen->screen()->root_visual, // visual
 217                                      0,                               // value mask
 218                                      0));                             // value list
 219     }
 220
 221     connection()->addWindow(m_window, this);
 222
 223     Q_XCB_CALL(xcb_change_window_attributes(xcb_connection(), m_window, mask, values));
 224
 225     xcb_atom_t properties[4];
 226     int propertyCount = 0;
 227     properties[propertyCount++] = atom(QXcbAtom::WM_DELETE_WINDOW);
 228     properties[propertyCount++] = atom(QXcbAtom::WM_TAKE_FOCUS);
 229     properties[propertyCount++] = atom(QXcbAtom::_NET_WM_PING);
 230
 231     if (m_screen->syncRequestSupported())
 232         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_SYNC_REQUEST);
 233
 234     if (window()->windowFlags() & Qt::WindowContextHelpButtonHint)
 235         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_CONTEXT_HELP);
 236
 237     Q_XCB_CALL(xcb_change_property(xcb_connection(),
 238                                    XCB_PROP_MODE_REPLACE,
 239                                    m_window,
 240                                    atom(QXcbAtom::WM_PROTOCOLS),
 241                                    XCB_ATOM_ATOM,
 242                                    32,
 243                                    propertyCount,
 244                                    properties));
 245     m_syncValue.hi = 0;
 246     m_syncValue.lo = 0;
 247
 248     if (m_screen->syncRequestSupported()) {
 249         m_syncCounter = xcb_generate_id(xcb_connection());
 250         Q_XCB_CALL(xcb_sync_create_counter(xcb_connection(), m_syncCounter, m_syncValue));
 251
 252         Q_XCB_CALL(xcb_change_property(xcb_connection(),
 253                                        XCB_PROP_MODE_REPLACE,
 254                                        m_window,
 255                                        atom(QXcbAtom::_NET_WM_SYNC_REQUEST_COUNTER),
 256                                        XCB_ATOM_CARDINAL,
 257                                        32,
 258                                        1,
 259                                        &m_syncCounter));
 260     }
 261
 262     // set the PID to let the WM kill the application if unresponsive
 263     long pid = getpid();
 264     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 265                                    atom(QXcbAtom::_NET_WM_PID), XCB_ATOM_CARDINAL, 32,
 266                                    1, &pid));
 267
 268     xcb_wm_hints_t hints;
 269     memset(&hints, 0, sizeof(hints));
 270     xcb_wm_hints_set_normal(&hints);
 271
 272     xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 273
 274     xcb_window_t leader = m_screen->clientLeader();
 275     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 276                                    atom(QXcbAtom::WM_CLIENT_LEADER), XCB_ATOM_WINDOW, 32,
 277                                    1, &leader));
 278
 279     setWindowFlags(window()->windowFlags());
 280     setWindowTitle(window()->windowTitle());
 281     setWindowState(window()->windowState());
 282
 283     connection()->drag()->dndEnable(this, true);
 284 }
 285
 286 QXcbWindow::~QXcbWindow()
 287 {
 288     destroy();
 289 }
 290
 291 void QXcbWindow::destroy()
 292 {
 293     if (m_syncCounter && m_screen->syncRequestSupported())
 294         Q_XCB_CALL(xcb_sync_destroy_counter(xcb_connection(), m_syncCounter));
 295     if (m_window) {
 296         connection()->removeWindow(m_window);
 297         Q_XCB_CALL(xcb_destroy_window(xcb_connection(), m_window));
 298     }
 299     m_mapped = false;
 300
 301 #if defined(XCB_USE_EGL)
 302     delete m_eglSurface;
 303     m_eglSurface = 0;
 304 #endif
 305 }
 306
 307 void QXcbWindow::setGeometry(const QRect &rect)
 308 {
 309     QPlatformWindow::setGeometry(rect);
 310
 311     const quint32 mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
 312     const quint32 values[] = { rect.x(),
 313                                rect.y(),
 314                                qBound(1, rect.width(), XCOORD_MAX),
 315                                qBound(1, rect.height(), XCOORD_MAX) };
 316
 317     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
 318 }
 319
 320 QMargins QXcbWindow::frameMargins() const
 321 {
 322     if (m_dirtyFrameMargins) {
 323         xcb_window_t window = m_window;
 324         xcb_window_t parent = m_window;
 325
 326         bool foundRoot = false;
 327
 328         const QVector<xcb_window_t> &virtualRoots =
 329             connection()->wmSupport()->virtualRoots();
 330
 331         while (!foundRoot) {
 332             xcb_query_tree_cookie_t cookie = xcb_query_tree(xcb_connection(), parent);
 333
 334             xcb_generic_error_t *error;
 335             xcb_query_tree_reply_t *reply = xcb_query_tree_reply(xcb_connection(), cookie, &error);
 336             if (reply) {
 337                 if (reply->root == reply->parent || virtualRoots.indexOf(reply->parent) != -1) {
 338                     foundRoot = true;
 339                 } else {
 340                     window = parent;
 341                     parent = reply->parent;
 342                 }
 343
 344                 free(reply);
 345             } else {
 346                 if (error) {
 347                     connection()->handleXcbError(error);
 348                     free(error);
 349                 }
 350
 351                 m_dirtyFrameMargins = false;
 352                 m_frameMargins = QMargins();
 353                 return m_frameMargins;
 354             }
 355         }
 356
 357         QPoint offset;
 358
 359         xcb_generic_error_t *error;
 360         xcb_translate_coordinates_reply_t *reply =
 361             xcb_translate_coordinates_reply(
 362                 xcb_connection(),
 363                 xcb_translate_coordinates(xcb_connection(), window, parent, 0, 0),
 364                 &error);
 365
 366         if (reply) {
 367             offset = QPoint(reply->dst_x, reply->dst_y);
 368             free(reply);
 369         } else if (error) {
 370             free(error);
 371         }
 372
 373         xcb_get_geometry_reply_t *geom =
 374             xcb_get_geometry_reply(
 375                 xcb_connection(),
 376                 xcb_get_geometry(xcb_connection(), parent),
 377                 &error);
 378
 379         if (geom) {
 380             // --
 381             // add the border_width for the window managers frame... some window managers
 382             // do not use a border_width of zero for their frames, and if we the left and
 383             // top strut, we ensure that pos() is absolutely correct.  frameGeometry()
 384             // will still be incorrect though... perhaps i should have foffset as well, to
 385             // indicate the frame offset (equal to the border_width on X).
 386             // - Brad
 387             // -- copied from qwidget_x11.cpp
 388
 389             int left = offset.x() + geom->border_width;
 390             int top = offset.y() + geom->border_width;
 391             int right = geom->width + geom->border_width - geometry().width() - offset.x();
 392             int bottom = geom->height + geom->border_width - geometry().height() - offset.y();
 393
 394             m_frameMargins = QMargins(left, top, right, bottom);
 395
 396             free(geom);
 397         } else if (error) {
 398             free(error);
 399         }
 400
 401         m_dirtyFrameMargins = false;
 402     }
 403
 404     return m_frameMargins;
 405 }
 406
 407 void QXcbWindow::setVisible(bool visible)
 408 {
 409     if (visible)
 410         show();
 411     else
 412         hide();
 413 }
 414
 415 void QXcbWindow::show()
 416 {
 417     if (window()->isTopLevel()) {
 418         xcb_get_property_cookie_t cookie = xcb_get_wm_hints(xcb_connection(), m_window);
 419
 420         xcb_generic_error_t *error;
 421
 422         xcb_wm_hints_t hints;
 423         xcb_get_wm_hints_reply(xcb_connection(), cookie, &hints, &error);
 424
 425         if (error) {
 426             connection()->handleXcbError(error);
 427             free(error);
 428         }
 429
 430         m_dirtyFrameMargins = true;
 431
 432         if (window()->windowState() & Qt::WindowMinimized)
 433             xcb_wm_hints_set_iconic(&hints);
 434         else
 435             xcb_wm_hints_set_normal(&hints);
 436
 437         xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 438
 439         // update WM_NORMAL_HINTS
 440         propagateSizeHints();
 441
 442         // update WM_TRANSIENT_FOR
 443         if (window()->transientParent() && isTransient(window())) {
 444             QXcbWindow *transientXcbParent = static_cast<QXcbWindow *>(window()->transientParent()->handle());
 445             if (transientXcbParent) {
 446                 // ICCCM 4.1.2.6
 447                 xcb_window_t parentWindow = transientXcbParent->xcb_window();
 448
 449                 // todo: set transient for group (wm_client_leader) if no parent, a la qwidget_x11.cpp
 450                 Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 451                                                XCB_ATOM_WM_TRANSIENT_FOR, XCB_ATOM_WINDOW, 32,
 452                                                1, &parentWindow));
 453             }
 454         }
 455
 456         // update _MOTIF_WM_HINTS
 457         updateMotifWmHintsBeforeMap();
 458
 459         // update _NET_WM_STATE
 460         updateNetWmStateBeforeMap();
 461     }
 462
 463     Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 464     xcb_flush(xcb_connection());
 465
 466     connection()->sync();
 467 }
 468
 469 void QXcbWindow::hide()
 470 {
 471     Q_XCB_CALL(xcb_unmap_window(xcb_connection(), m_window));
 472
 473     // send synthetic UnmapNotify event according to icccm 4.1.4
 474     xcb_unmap_notify_event_t event;
 475     event.response_type = XCB_UNMAP_NOTIFY;
 476     event.event = m_screen->root();
 477     event.window = m_window;
 478     event.from_configure = false;
 479     Q_XCB_CALL(xcb_send_event(xcb_connection(), false, m_screen->root(),
 480                               XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event));
 481
 482     xcb_flush(xcb_connection());
 483
 484     m_mapped = false;
 485 }
 486
 487 struct QtMotifWmHints {
 488     quint32 flags, functions, decorations;
 489     qint32 input_mode;
 490     quint32 status;
 491 };
 492
 493 enum {
 494     MWM_HINTS_FUNCTIONS   = (1L << 0),
 495
 496     MWM_FUNC_ALL      = (1L << 0),
 497     MWM_FUNC_RESIZE   = (1L << 1),
 498     MWM_FUNC_MOVE     = (1L << 2),
 499     MWM_FUNC_MINIMIZE = (1L << 3),
 500     MWM_FUNC_MAXIMIZE = (1L << 4),
 501     MWM_FUNC_CLOSE    = (1L << 5),
 502
 503     MWM_HINTS_DECORATIONS = (1L << 1),
 504
 505     MWM_DECOR_ALL      = (1L << 0),
 506     MWM_DECOR_BORDER   = (1L << 1),
 507     MWM_DECOR_RESIZEH  = (1L << 2),
 508     MWM_DECOR_TITLE    = (1L << 3),
 509     MWM_DECOR_MENU     = (1L << 4),
 510     MWM_DECOR_MINIMIZE = (1L << 5),
 511     MWM_DECOR_MAXIMIZE = (1L << 6),
 512
 513     MWM_HINTS_INPUT_MODE = (1L << 2),
 514
 515     MWM_INPUT_MODELESS                  = 0L,
 516     MWM_INPUT_PRIMARY_APPLICATION_MODAL = 1L,
 517     MWM_INPUT_FULL_APPLICATION_MODAL    = 3L
 518 };
 519
 520 static QtMotifWmHints getMotifWmHints(QXcbConnection *c, xcb_window_t window)
 521 {
 522     QtMotifWmHints hints;
 523
 524     xcb_get_property_cookie_t get_cookie =
 525         xcb_get_property(c->xcb_connection(), 0, window, c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 526                          c->atom(QXcbAtom::_MOTIF_WM_HINTS), 0, 20);
 527
 528     xcb_generic_error_t *error;
 529
 530     xcb_get_property_reply_t *reply =
 531         xcb_get_property_reply(c->xcb_connection(), get_cookie, &error);
 532
 533     if (reply && reply->format == 32 && reply->type == c->atom(QXcbAtom::_MOTIF_WM_HINTS)) {
 534         hints = *((QtMotifWmHints *)xcb_get_property_value(reply));
 535     } else if (error) {
 536         c->handleXcbError(error);
 537         free(error);
 538
 539         hints.flags = 0L;
 540         hints.functions = MWM_FUNC_ALL;
 541         hints.decorations = MWM_DECOR_ALL;
 542         hints.input_mode = 0L;
 543         hints.status = 0L;
 544     }
 545
 546     free(reply);
 547
 548     return hints;
 549 }
 550
 551 static void setMotifWmHints(QXcbConnection *c, xcb_window_t window, const QtMotifWmHints &hints)
 552 {
 553     if (hints.flags != 0l) {
 554         Q_XCB_CALL2(xcb_change_property(c->xcb_connection(),
 555                                        XCB_PROP_MODE_REPLACE,
 556                                        window,
 557                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 558                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 559                                        32,
 560                                        5,
 561                                        &hints), c);
 562     } else {
 563         Q_XCB_CALL2(xcb_delete_property(c->xcb_connection(), window, c->atom(QXcbAtom::_MOTIF_WM_HINTS)), c);
 564     }
 565 }
 566
 567 void QXcbWindow::printNetWmState(const QVector<xcb_atom_t> &state)
 568 {
 569     printf("_NET_WM_STATE (%d): ", state.size());
 570     for (int i = 0; i < state.size(); ++i) {
 571 #define CHECK_WM_STATE(state_atom) \
 572         if (state.at(i) == atom(QXcbAtom::state_atom))\
 573             printf(#state_atom " ");
 574         CHECK_WM_STATE(_NET_WM_STATE_ABOVE)
 575         CHECK_WM_STATE(_NET_WM_STATE_BELOW)
 576         CHECK_WM_STATE(_NET_WM_STATE_FULLSCREEN)
 577         CHECK_WM_STATE(_NET_WM_STATE_MAXIMIZED_HORZ)
 578         CHECK_WM_STATE(_NET_WM_STATE_MAXIMIZED_VERT)
 579         CHECK_WM_STATE(_NET_WM_STATE_MODAL)
 580         CHECK_WM_STATE(_NET_WM_STATE_STAYS_ON_TOP)
 581         CHECK_WM_STATE(_NET_WM_STATE_DEMANDS_ATTENTION)
 582 #undef CHECK_WM_STATE
 583     }
 584     printf("\n");
 585 }
 586
 587 QVector<xcb_atom_t> QXcbWindow::getNetWmState()
 588 {
 589     QVector<xcb_atom_t> result;
 590
 591     xcb_get_property_cookie_t get_cookie =
 592         xcb_get_property(xcb_connection(), 0, m_window, atom(QXcbAtom::_NET_WM_STATE),
 593                          XCB_ATOM_ATOM, 0, 1024);
 594
 595     xcb_generic_error_t *error;
 596
 597     xcb_get_property_reply_t *reply =
 598         xcb_get_property_reply(xcb_connection(), get_cookie, &error);
 599
 600     if (reply && reply->format == 32 && reply->type == XCB_ATOM_ATOM) {
 601         result.resize(reply->length);
 602
 603         memcpy(result.data(), xcb_get_property_value(reply), reply->length * sizeof(xcb_atom_t));
 604
 605 #ifdef NET_WM_STATE_DEBUG
 606         printf("getting net wm state (%x)\n", m_window);
 607         printNetWmState(result);
 608 #endif
 609
 610         free(reply);
 611     } else if (error) {
 612         connection()->handleXcbError(error);
 613         free(error);
 614     } else {
 615 #ifdef NET_WM_STATE_DEBUG
 616         printf("getting net wm state (%x), empty\n", m_window);
 617 #endif
 618     }
 619
 620     return result;
 621 }
 622
 623 void QXcbWindow::setNetWmState(const QVector<xcb_atom_t> &atoms)
 624 {
 625     if (atoms.isEmpty()) {
 626         Q_XCB_CALL(xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_STATE)));
 627     } else {
 628         Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 629                                        atom(QXcbAtom::_NET_WM_STATE), XCB_ATOM_ATOM, 32,
 630                                        atoms.count(), atoms.constData()));
 631     }
 632     xcb_flush(xcb_connection());
 633 }
 634
 635
 636 Qt::WindowFlags QXcbWindow::setWindowFlags(Qt::WindowFlags flags)
 637 {
 638     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 639
 640     if (type == Qt::ToolTip)
 641         flags |= Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint;
 642     if (type == Qt::Popup)
 643         flags |= Qt::X11BypassWindowManagerHint;
 644
 645     setNetWmWindowFlags(flags);
 646     setMotifWindowFlags(flags);
 647
 648     return flags;
 649 }
 650
 651 void QXcbWindow::setMotifWindowFlags(Qt::WindowFlags flags)
 652 {
 653     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 654
 655     QtMotifWmHints mwmhints;
 656     mwmhints.flags = 0L;
 657     mwmhints.functions = 0L;
 658     mwmhints.decorations = 0;
 659     mwmhints.input_mode = 0L;
 660     mwmhints.status = 0L;
 661
 662     if (type != Qt::SplashScreen) {
 663         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 664
 665         bool customize = flags & Qt::CustomizeWindowHint;
 666         if (!(flags & Qt::FramelessWindowHint) && !(customize && !(flags & Qt::WindowTitleHint))) {
 667             mwmhints.decorations |= MWM_DECOR_BORDER;
 668             mwmhints.decorations |= MWM_DECOR_RESIZEH;
 669
 670             if (flags & Qt::WindowTitleHint)
 671                 mwmhints.decorations |= MWM_DECOR_TITLE;
 672
 673             if (flags & Qt::WindowSystemMenuHint)
 674                 mwmhints.decorations |= MWM_DECOR_MENU;
 675
 676             if (flags & Qt::WindowMinimizeButtonHint) {
 677                 mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 678                 mwmhints.functions |= MWM_FUNC_MINIMIZE;
 679             }
 680
 681             if (flags & Qt::WindowMaximizeButtonHint) {
 682                 mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 683                 mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 684             }
 685
 686             if (flags & Qt::WindowCloseButtonHint)
 687                 mwmhints.functions |= MWM_FUNC_CLOSE;
 688         }
 689     } else {
 690         // if type == Qt::SplashScreen
 691         mwmhints.decorations = MWM_DECOR_ALL;
 692     }
 693
 694     if (mwmhints.functions != 0) {
 695         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 696         mwmhints.functions |= MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 697     } else {
 698         mwmhints.functions = MWM_FUNC_ALL;
 699     }
 700
 701     if (!(flags & Qt::FramelessWindowHint)
 702         && flags & Qt::CustomizeWindowHint
 703         && flags & Qt::WindowTitleHint
 704         && !(flags &
 705              (Qt::WindowMinimizeButtonHint
 706               | Qt::WindowMaximizeButtonHint
 707               | Qt::WindowCloseButtonHint)))
 708     {
 709         // a special case - only the titlebar without any button
 710         mwmhints.flags = MWM_HINTS_FUNCTIONS;
 711         mwmhints.functions = MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 712         mwmhints.decorations = 0;
 713     }
 714
 715     setMotifWmHints(connection(), m_window, mwmhints);
 716 }
 717
 718 void QXcbWindow::changeNetWmState(bool set, xcb_atom_t one, xcb_atom_t two)
 719 {
 720     xcb_client_message_event_t event;
 721
 722     event.response_type = XCB_CLIENT_MESSAGE;
 723     event.format = 32;
 724     event.window = m_window;
 725     event.type = atom(QXcbAtom::_NET_WM_STATE);
 726     event.data.data32[0] = set ? 1 : 0;
 727     event.data.data32[1] = one;
 728     event.data.data32[2] = two;
 729     event.data.data32[3] = 0;
 730     event.data.data32[4] = 0;
 731
 732     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));
 733 }
 734
 735 Qt::WindowState QXcbWindow::setWindowState(Qt::WindowState state)
 736 {
 737     if (state == m_windowState)
 738         return state;
 739
 740     m_dirtyFrameMargins = true;
 741
 742     // unset old state
 743     switch (m_windowState) {
 744     case Qt::WindowMinimized:
 745         Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 746         break;
 747     case Qt::WindowMaximized:
 748         changeNetWmState(false,
 749                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 750                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 751         break;
 752     case Qt::WindowFullScreen:
 753         changeNetWmState(false, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 754         break;
 755     default:
 756         break;
 757     }
 758
 759     // set new state
 760     switch (state) {
 761     case Qt::WindowMinimized:
 762         {
 763             xcb_client_message_event_t event;
 764
 765             event.response_type = XCB_CLIENT_MESSAGE;
 766             event.format = 32;
 767             event.window = m_window;
 768             event.type = atom(QXcbAtom::WM_CHANGE_STATE);
 769             event.data.data32[0] = XCB_WM_STATE_ICONIC;
 770             event.data.data32[1] = 0;
 771             event.data.data32[2] = 0;
 772             event.data.data32[3] = 0;
 773             event.data.data32[4] = 0;
 774
 775             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));
 776         }
 777         break;
 778     case Qt::WindowMaximized:
 779         changeNetWmState(true,
 780                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 781                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 782         break;
 783     case Qt::WindowFullScreen:
 784         changeNetWmState(true, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 785         break;
 786     case Qt::WindowNoState:
 787         break;
 788     default:
 789         break;
 790     }
 791
 792     connection()->sync();
 793
 794     m_windowState = state;
 795     return m_windowState;
 796 }
 797
 798 void QXcbWindow::setNetWmWindowFlags(Qt::WindowFlags flags)
 799 {
 800     // in order of decreasing priority
 801     QVector<uint> windowTypes;
 802
 803     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 804
 805     switch (type) {
 806     case Qt::Dialog:
 807     case Qt::Sheet:
 808         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DIALOG));
 809         break;
 810     case Qt::Tool:
 811     case Qt::Drawer:
 812         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_UTILITY));
 813         break;
 814     case Qt::ToolTip:
 815         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_TOOLTIP));
 816         break;
 817     case Qt::SplashScreen:
 818         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_SPLASH));
 819         break;
 820     default:
 821         break;
 822     }
 823
 824     if (flags & Qt::FramelessWindowHint)
 825         windowTypes.append(atom(QXcbAtom::_KDE_NET_WM_WINDOW_TYPE_OVERRIDE));
 826
 827     windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_NORMAL));
 828
 829     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 830                                    atom(QXcbAtom::_NET_WM_WINDOW_TYPE), XCB_ATOM_ATOM, 32,
 831                                    windowTypes.count(), windowTypes.constData()));
 832 }
 833
 834 void QXcbWindow::updateMotifWmHintsBeforeMap()
 835 {
 836     QtMotifWmHints mwmhints = getMotifWmHints(connection(), m_window);
 837
 838     if (window()->windowModality() != Qt::NonModal) {
 839         switch (window()->windowModality()) {
 840         case Qt::WindowModal:
 841             mwmhints.input_mode = MWM_INPUT_PRIMARY_APPLICATION_MODAL;
 842             break;
 843         case Qt::ApplicationModal:
 844         default:
 845             mwmhints.input_mode = MWM_INPUT_FULL_APPLICATION_MODAL;
 846             break;
 847         }
 848         mwmhints.flags |= MWM_HINTS_INPUT_MODE;
 849     } else {
 850         mwmhints.input_mode = MWM_INPUT_MODELESS;
 851         mwmhints.flags &= ~MWM_HINTS_INPUT_MODE;
 852     }
 853
 854     if (window()->minimumSize() == window()->maximumSize()) {
 855         // fixed size, remove the resize handle (since mwm/dtwm
 856         // isn't smart enough to do it itself)
 857         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 858         if (mwmhints.functions == MWM_FUNC_ALL) {
 859             mwmhints.functions = MWM_FUNC_MOVE;
 860         } else {
 861             mwmhints.functions &= ~MWM_FUNC_RESIZE;
 862         }
 863
 864         if (mwmhints.decorations == MWM_DECOR_ALL) {
 865             mwmhints.flags |= MWM_HINTS_DECORATIONS;
 866             mwmhints.decorations = (MWM_DECOR_BORDER
 867                                     | MWM_DECOR_TITLE
 868                                     | MWM_DECOR_MENU);
 869         } else {
 870             mwmhints.decorations &= ~MWM_DECOR_RESIZEH;
 871         }
 872     }
 873
 874     if (window()->windowFlags() & Qt::WindowMinimizeButtonHint) {
 875         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 876         mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 877         mwmhints.functions |= MWM_FUNC_MINIMIZE;
 878     }
 879     if (window()->windowFlags() & Qt::WindowMaximizeButtonHint) {
 880         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 881         mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 882         mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 883     }
 884     if (window()->windowFlags() & Qt::WindowCloseButtonHint)
 885         mwmhints.functions |= MWM_FUNC_CLOSE;
 886
 887     setMotifWmHints(connection(), m_window, mwmhints);
 888 }
 889
 890 void QXcbWindow::updateNetWmStateBeforeMap()
 891 {
 892     QVector<xcb_atom_t> netWmState;
 893
 894     Qt::WindowFlags flags = window()->windowFlags();
 895     if (flags & Qt::WindowStaysOnTopHint) {
 896         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_ABOVE));
 897         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP));
 898     } else if (flags & Qt::WindowStaysOnBottomHint) {
 899         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_BELOW));
 900     }
 901
 902     if (window()->windowState() & Qt::WindowFullScreen) {
 903         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 904     }
 905
 906     if (window()->windowState() & Qt::WindowMaximized) {
 907         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ));
 908         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 909     }
 910
 911     if (window()->windowModality() != Qt::NonModal) {
 912         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_MODAL));
 913     }
 914
 915     setNetWmState(netWmState);
 916 }
 917
 918 void QXcbWindow::updateNetWmUserTime(xcb_timestamp_t timestamp)
 919 {
 920     xcb_window_t wid = m_window;
 921
 922     const bool isSupportedByWM = connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
 923     if (m_netWmUserTimeWindow || isSupportedByWM) {
 924         if (!m_netWmUserTimeWindow) {
 925             m_netWmUserTimeWindow = xcb_generate_id(xcb_connection());
 926             Q_XCB_CALL(xcb_create_window(xcb_connection(),
 927                                          XCB_COPY_FROM_PARENT,            // depth -- same as root
 928                                          m_netWmUserTimeWindow,                        // window id
 929                                          m_window,                   // parent window id
 930                                          -1, -1, 1, 1,
 931                                          0,                               // border width
 932                                          XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
 933                                          m_screen->screen()->root_visual, // visual
 934                                          0,                               // value mask
 935                                          0));                             // value list
 936             wid = m_netWmUserTimeWindow;
 937             xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW),
 938                                 XCB_ATOM_WINDOW, 32, 1, &m_netWmUserTimeWindow);
 939             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME));
 940         } else if (!isSupportedByWM) {
 941             // WM no longer supports it, then we should remove the
 942             // _NET_WM_USER_TIME_WINDOW atom.
 943             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
 944             xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow);
 945             m_netWmUserTimeWindow = XCB_NONE;
 946         } else {
 947             wid = m_netWmUserTimeWindow;
 948         }
 949     }
 950     xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, wid, atom(QXcbAtom::_NET_WM_USER_TIME),
 951                         XCB_ATOM_CARDINAL, 32, 1, &timestamp);
 952 }
 953
 954
 955 WId QXcbWindow::winId() const
 956 {
 957     return m_window;
 958 }
 959
 960 void QXcbWindow::setParent(const QPlatformWindow *parent)
 961 {
 962     // re-create for compatibility
 963     create();
 964
 965     QPoint topLeft = geometry().topLeft();
 966
 967     xcb_window_t xcb_parent_id = parent ? static_cast<const QXcbWindow *>(parent)->xcb_window() : m_screen->root();
 968     Q_XCB_CALL(xcb_reparent_window(xcb_connection(), xcb_window(), xcb_parent_id, topLeft.x(), topLeft.y()));
 969 }
 970
 971 void QXcbWindow::setWindowTitle(const QString &title)
 972 {
 973     QByteArray ba = title.toUtf8();
 974     Q_XCB_CALL(xcb_change_property(xcb_connection(),
 975                                    XCB_PROP_MODE_REPLACE,
 976                                    m_window,
 977                                    atom(QXcbAtom::_NET_WM_NAME),
 978                                    atom(QXcbAtom::UTF8_STRING),
 979                                    8,
 980                                    ba.length(),
 981                                    ba.constData()));
 982 }
 983
 984 void QXcbWindow::raise()
 985 {
 986     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
 987     const quint32 values[] = { XCB_STACK_MODE_ABOVE };
 988     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
 989 }
 990
 991 void QXcbWindow::lower()
 992 {
 993     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
 994     const quint32 values[] = { XCB_STACK_MODE_BELOW };
 995     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
 996 }
 997
 998 void QXcbWindow::propagateSizeHints()
 999 {
1000     // update WM_NORMAL_HINTS
1001     xcb_size_hints_t hints;
1002     memset(&hints, 0, sizeof(hints));
1003
1004     QRect rect = geometry();
1005
1006     xcb_size_hints_set_position(&hints, true, rect.x(), rect.y());
1007     xcb_size_hints_set_size(&hints, true, rect.width(), rect.height());
1008     xcb_size_hints_set_win_gravity(&hints, XCB_GRAVITY_STATIC);
1009
1010     QWindow *win = window();
1011
1012     QSize minimumSize = win->minimumSize();
1013     QSize maximumSize = win->maximumSize();
1014     QSize baseSize = win->baseSize();
1015     QSize sizeIncrement = win->sizeIncrement();
1016
1017     if (minimumSize.width() > 0 || minimumSize.height() > 0)
1018         xcb_size_hints_set_min_size(&hints, minimumSize.width(), minimumSize.height());
1019
1020     if (maximumSize.width() < QWINDOWSIZE_MAX || maximumSize.height() < QWINDOWSIZE_MAX)
1021         xcb_size_hints_set_max_size(&hints,
1022                                     qMin(XCOORD_MAX, maximumSize.width()),
1023                                     qMin(XCOORD_MAX, maximumSize.height()));
1024
1025     if (sizeIncrement.width() > 0 || sizeIncrement.height() > 0) {
1026         xcb_size_hints_set_base_size(&hints, baseSize.width(), baseSize.height());
1027         xcb_size_hints_set_resize_inc(&hints, sizeIncrement.width(), sizeIncrement.height());
1028     }
1029
1030     xcb_set_wm_normal_hints(xcb_connection(), m_window, &hints);
1031 }
1032
1033 void QXcbWindow::requestActivateWindow()
1034 {
1035     if (m_mapped){
1036         updateNetWmUserTime(connection()->time());
1037         Q_XCB_CALL(xcb_set_input_focus(xcb_connection(), XCB_INPUT_FOCUS_PARENT, m_window, connection()->time()));
1038     }
1039     connection()->sync();
1040 }
1041
1042 QSurfaceFormat QXcbWindow::format() const
1043 {
1044     // ### return actual format
1045     return m_requestedFormat;
1046 }
1047
1048 #if defined(XCB_USE_EGL)
1049 QXcbEGLSurface *QXcbWindow::eglSurface() const
1050 {
1051     if (!m_eglSurface) {
1052         EGLDisplay display = connection()->egl_display();
1053         EGLConfig config = q_configFromGLFormat(display, window()->format(), true);
1054         EGLSurface surface = eglCreateWindowSurface(display, config, (EGLNativeWindowType)m_window, 0);
1055
1056         m_eglSurface = new QXcbEGLSurface(display, surface);
1057     }
1058
1059     return m_eglSurface;
1060 }
1061 #endif
1062
1063 void QXcbWindow::handleExposeEvent(const xcb_expose_event_t *event)
1064 {
1065     QRect rect(event->x, event->y, event->width, event->height);
1066     QWindowSystemInterface::handleExposeEvent(window(), rect);
1067 }
1068
1069 void QXcbWindow::handleClientMessageEvent(const xcb_client_message_event_t *event)
1070 {
1071     if (event->format != 32)
1072         return;
1073
1074     if (event->type == atom(QXcbAtom::WM_PROTOCOLS)) {
1075         if (event->data.data32[0] == atom(QXcbAtom::WM_DELETE_WINDOW)) {
1076             QWindowSystemInterface::handleCloseEvent(window());
1077         } else if (event->data.data32[0] == atom(QXcbAtom::WM_TAKE_FOCUS)) {
1078             connection()->setTime(event->data.data32[1]);
1079         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_PING)) {
1080             xcb_client_message_event_t reply = *event;
1081
1082             reply.response_type = XCB_CLIENT_MESSAGE;
1083             reply.window = m_screen->root();
1084
1085             xcb_send_event(xcb_connection(), 0, m_screen->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&reply);
1086             xcb_flush(xcb_connection());
1087         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_SYNC_REQUEST)) {
1088             connection()->setTime(event->data.data32[1]);
1089             if (!m_hasReceivedSyncRequest) {
1090                 m_hasReceivedSyncRequest = true;
1091                 printf("Window manager supports _NET_WM_SYNC_REQUEST, syncing resizes\n");
1092             }
1093             m_syncValue.lo = event->data.data32[2];
1094             m_syncValue.hi = event->data.data32[3];
1095         } else {
1096             qWarning() << "unhandled WM_PROTOCOLS message:" << connection()->atomName(event->data.data32[0]);
1097         }
1098     } else if (event->type == atom(QXcbAtom::XdndEnter)) {
1099         connection()->drag()->handleEnter(window(), event);
1100     } else if (event->type == atom(QXcbAtom::XdndPosition)) {
1101         connection()->drag()->handlePosition(window(), event, false);
1102     } else if (event->type == atom(QXcbAtom::XdndLeave)) {
1103         connection()->drag()->handleLeave(window(), event, false);
1104     } else if (event->type == atom(QXcbAtom::XdndDrop)) {
1105         connection()->drag()->handleDrop(window(), event, false);
1106     } else {
1107         qWarning() << "unhandled client message:" << connection()->atomName(event->type);
1108     }
1109 }
1110
1111 void QXcbWindow::handleConfigureNotifyEvent(const xcb_configure_notify_event_t *event)
1112 {
1113     int xpos = geometry().x();
1114     int ypos = geometry().y();
1115
1116     if ((event->width == geometry().width() && event->height == geometry().height()) || event->x != 0 || event->y != 0) {
1117         xpos = event->x;
1118         ypos = event->y;
1119     }
1120
1121     QRect rect(xpos, ypos, event->width, event->height);
1122
1123     if (rect == geometry())
1124         return;
1125
1126     QPlatformWindow::setGeometry(rect);
1127     QWindowSystemInterface::handleGeometryChange(window(), rect);
1128
1129 #if XCB_USE_DRI2
1130     if (m_context)
1131         static_cast<QDri2Context *>(m_context)->resize(rect.size());
1132 #endif
1133 }
1134
1135 void QXcbWindow::handleMapNotifyEvent(const xcb_map_notify_event_t *event)
1136 {
1137     if (event->window == m_window) {
1138         m_mapped = true;
1139         QWindowSystemInterface::handleMapEvent(window());
1140     }
1141 }
1142
1143 void QXcbWindow::handleUnmapNotifyEvent(const xcb_unmap_notify_event_t *event)
1144 {
1145     if (event->window == m_window) {
1146         m_mapped = false;
1147         QWindowSystemInterface::handleUnmapEvent(window());
1148     }
1149 }
1150
1151 static Qt::MouseButtons translateMouseButtons(int s)
1152 {
1153     Qt::MouseButtons ret = 0;
1154     if (s & XCB_BUTTON_MASK_1)
1155         ret |= Qt::LeftButton;
1156     if (s & XCB_BUTTON_MASK_2)
1157         ret |= Qt::MidButton;
1158     if (s & XCB_BUTTON_MASK_3)
1159         ret |= Qt::RightButton;
1160     return ret;
1161 }
1162
1163 static Qt::MouseButton translateMouseButton(xcb_button_t s)
1164 {
1165     switch (s) {
1166     case 1:
1167         return Qt::LeftButton;
1168     case 2:
1169         return Qt::MidButton;
1170     case 3:
1171         return Qt::RightButton;
1172     default:
1173         return Qt::NoButton;
1174     }
1175 }
1176
1177 void QXcbWindow::handleButtonPressEvent(const xcb_button_press_event_t *event)
1178 {
1179     updateNetWmUserTime(event->time);
1180
1181     QPoint local(event->event_x, event->event_y);
1182     QPoint global(event->root_x, event->root_y);
1183
1184     Qt::KeyboardModifiers modifiers = Qt::NoModifier;
1185
1186     if (event->detail >= 4 && event->detail <= 7) {
1187         //logic borrowed from qapplication_x11.cpp
1188         int delta = 120 * ((event->detail == 4 || event->detail == 6) ? 1 : -1);
1189         bool hor = (((event->detail == 4 || event->detail == 5)
1190                      && (modifiers & Qt::AltModifier))
1191                     || (event->detail == 6 || event->detail == 7));
1192
1193         QWindowSystemInterface::handleWheelEvent(window(), event->time,
1194                                                  local, global, delta, hor ? Qt::Horizontal : Qt::Vertical);
1195         return;
1196     }
1197
1198     handleMouseEvent(event->detail, event->state, event->time, local, global);
1199 }
1200
1201 void QXcbWindow::handleButtonReleaseEvent(const xcb_button_release_event_t *event)
1202 {
1203     QPoint local(event->event_x, event->event_y);
1204     QPoint global(event->root_x, event->root_y);
1205
1206     handleMouseEvent(event->detail, event->state, event->time, local, global);
1207 }
1208
1209 void QXcbWindow::handleMotionNotifyEvent(const xcb_motion_notify_event_t *event)
1210 {
1211     QPoint local(event->event_x, event->event_y);
1212     QPoint global(event->root_x, event->root_y);
1213
1214     handleMouseEvent(event->detail, event->state, event->time, local, global);
1215 }
1216
1217 void QXcbWindow::handleMouseEvent(xcb_button_t detail, uint16_t state, xcb_timestamp_t time, const QPoint &local, const QPoint &global)
1218 {
1219     connection()->setTime(time);
1220
1221     Qt::MouseButtons buttons = translateMouseButtons(state);
1222     Qt::MouseButton button = translateMouseButton(detail);
1223
1224     buttons ^= button; // X event uses state *before*, Qt uses state *after*
1225
1226     QWindowSystemInterface::handleMouseEvent(window(), time, local, global, buttons);
1227 }
1228
1229 void QXcbWindow::handleEnterNotifyEvent(const xcb_enter_notify_event_t *event)
1230 {
1231     connection()->setTime(event->time);
1232
1233     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1234         || event->detail == XCB_NOTIFY_DETAIL_VIRTUAL
1235         || event->detail == XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL)
1236     {
1237         return;
1238     }
1239
1240     QWindowSystemInterface::handleEnterEvent(window());
1241 }
1242
1243 void QXcbWindow::handleLeaveNotifyEvent(const xcb_leave_notify_event_t *event)
1244 {
1245     connection()->setTime(event->time);
1246
1247     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1248         || event->detail == XCB_NOTIFY_DETAIL_INFERIOR)
1249     {
1250         return;
1251     }
1252
1253     QWindowSystemInterface::handleLeaveEvent(window());
1254 }
1255
1256 void QXcbWindow::handleFocusInEvent(const xcb_focus_in_event_t *)
1257 {
1258     QWindowSystemInterface::handleWindowActivated(window());
1259 }
1260
1261 static bool focusInPeeker(xcb_generic_event_t *event)
1262 {
1263     if (!event) {
1264         // FocusIn event is not in the queue, proceed with FocusOut normally.
1265         QWindowSystemInterface::handleWindowActivated(0);
1266         return true;
1267     }
1268     uint response_type = event->response_type & ~0x80;
1269     return response_type == XCB_FOCUS_IN;
1270 }
1271
1272 void QXcbWindow::handleFocusOutEvent(const xcb_focus_out_event_t *)
1273 {
1274     // Do not set the active window to 0 if there is a FocusIn coming.
1275     // There is however no equivalent for XPutBackEvent so register a
1276     // callback for QXcbConnection instead.
1277     connection()->addPeekFunc(focusInPeeker);
1278 }
1279
1280 void QXcbWindow::updateSyncRequestCounter()
1281 {
1282     if (m_screen->syncRequestSupported() && (m_syncValue.lo != 0 || m_syncValue.hi != 0)) {
1283         Q_XCB_CALL(xcb_sync_set_counter(xcb_connection(), m_syncCounter, m_syncValue));
1284         xcb_flush(xcb_connection());
1285         connection()->sync();
1286
1287         m_syncValue.lo = 0;
1288         m_syncValue.hi = 0;
1289     }
1290 }
1291
1292 bool QXcbWindow::setKeyboardGrabEnabled(bool grab)
1293 {
1294     if (!grab) {
1295         xcb_ungrab_keyboard(xcb_connection(), XCB_TIME_CURRENT_TIME);
1296         return true;
1297     }
1298     xcb_grab_keyboard_cookie_t cookie = xcb_grab_keyboard(xcb_connection(), false,
1299                                                           m_window, XCB_TIME_CURRENT_TIME,
1300                                                           GrabModeAsync, GrabModeAsync);
1301     xcb_generic_error_t *err;
1302     xcb_grab_keyboard_reply_t *reply = xcb_grab_keyboard_reply(xcb_connection(), cookie, &err);
1303     bool result = !(err || !reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1304     free(reply);
1305     free(err);
1306     return result;
1307 }
1308
1309 bool QXcbWindow::setMouseGrabEnabled(bool grab)
1310 {
1311     if (!grab) {
1312         xcb_ungrab_pointer(xcb_connection(), XCB_TIME_CURRENT_TIME);
1313         return true;
1314     }
1315     xcb_grab_pointer_cookie_t cookie = xcb_grab_pointer(xcb_connection(), false, m_window,
1316                                                         (ButtonPressMask | ButtonReleaseMask | ButtonMotionMask
1317                                                          | EnterWindowMask | LeaveWindowMask | PointerMotionMask),
1318                                                         GrabModeAsync, GrabModeAsync,
1319                                                         XCB_WINDOW_NONE, XCB_CURSOR_NONE,
1320                                                         XCB_TIME_CURRENT_TIME);
1321     xcb_generic_error_t *err;
1322     xcb_grab_pointer_reply_t *reply = xcb_grab_pointer_reply(xcb_connection(), cookie, &err);
1323     bool result = !(err || !reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1324     free(reply);
1325     free(err);
1326     return result;
1327 }
1328
1329 void QXcbWindow::setCursor(xcb_cursor_t cursor)
1330 {
1331     xcb_change_window_attributes(xcb_connection(), m_window, XCB_CW_CURSOR, &cursor);
1332     xcb_flush(xcb_connection());
1333 }