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