src/plugins/platforms/xcb/qxcbwindow.cpp

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  41
  42 #include "qxcbwindow.h"
  43
  44 #include <QtDebug>
  45 #include <QScreen>
  46 #include <QtGui/QIcon>
  47 #include <QtGui/QRegion>
  48
  49 #include "qxcbconnection.h"
  50 #include "qxcbscreen.h"
  51 #include "qxcbdrag.h"
  52 #include "qxcbkeyboard.h"
  53 #include "qxcbwmsupport.h"
  54 #include "qxcbimage.h"
  55
  56 #include <qpa/qplatformintegration.h>
  57
  58 // FIXME This workaround can be removed for xcb-icccm > 3.8
  59 #define class class_name
  60 #include <xcb/xcb_icccm.h>
  61 #undef class
  62 #include <xcb/xfixes.h>
  63 #ifndef QT_NO_SHAPE
  64 #  include <xcb/shape.h>
  65 #endif // QT_NO_SHAPE
  66
  67 // xcb-icccm 3.8 support
  68 #ifdef XCB_ICCCM_NUM_WM_SIZE_HINTS_ELEMENTS
  69 #define xcb_get_wm_hints_reply xcb_icccm_get_wm_hints_reply
  70 #define xcb_get_wm_hints xcb_icccm_get_wm_hints
  71 #define xcb_get_wm_hints_unchecked xcb_icccm_get_wm_hints_unchecked
  72 #define xcb_set_wm_hints xcb_icccm_set_wm_hints
  73 #define xcb_set_wm_normal_hints xcb_icccm_set_wm_normal_hints
  74 #define xcb_size_hints_set_base_size xcb_icccm_size_hints_set_base_size
  75 #define xcb_size_hints_set_max_size xcb_icccm_size_hints_set_max_size
  76 #define xcb_size_hints_set_min_size xcb_icccm_size_hints_set_min_size
  77 #define xcb_size_hints_set_position xcb_icccm_size_hints_set_position
  78 #define xcb_size_hints_set_resize_inc xcb_icccm_size_hints_set_resize_inc
  79 #define xcb_size_hints_set_size xcb_icccm_size_hints_set_size
  80 #define xcb_size_hints_set_win_gravity xcb_icccm_size_hints_set_win_gravity
  81 #define xcb_wm_hints_set_iconic xcb_icccm_wm_hints_set_iconic
  82 #define xcb_wm_hints_set_normal xcb_icccm_wm_hints_set_normal
  83 #define xcb_wm_hints_set_input xcb_icccm_wm_hints_set_input
  84 #define xcb_wm_hints_t xcb_icccm_wm_hints_t
  85 #define XCB_WM_STATE_ICONIC XCB_ICCCM_WM_STATE_ICONIC
  86 #define XCB_WM_STATE_WITHDRAWN XCB_ICCCM_WM_STATE_WITHDRAWN
  87 #endif
  88
  89 #include <private/qguiapplication_p.h>
  90 #include <private/qwindow_p.h>
  91
  92 #include <qpa/qplatformbackingstore.h>
  93 #include <qpa/qwindowsysteminterface.h>
  94
  95 #include <stdio.h>
  96
  97 #ifdef XCB_USE_XLIB
  98 #include <X11/Xlib.h>
  99 #include <X11/Xutil.h>
 100 #endif
 101
 102 #if defined(XCB_USE_XINPUT2_MAEMO) || defined(XCB_USE_XINPUT2)
 103 #include <X11/extensions/XInput2.h>
 104 #endif
 105
 106 #if defined(XCB_USE_GLX)
 107 #include "qglxintegration.h"
 108 #include <QtPlatformSupport/private/qglxconvenience_p.h>
 109 #elif defined(XCB_USE_EGL)
 110 #include "qxcbeglsurface.h"
 111 #include <QtPlatformSupport/private/qeglconvenience_p.h>
 112 #include <QtPlatformSupport/private/qxlibeglintegration_p.h>
 113 #endif
 114
 115 #define XCOORD_MAX 16383
 116
 117 //#ifdef NET_WM_STATE_DEBUG
 118
 119 QT_BEGIN_NAMESPACE
 120
 121 // Returns true if we should set WM_TRANSIENT_FOR on \a w
 122 static inline bool isTransient(const QWindow *w)
 123 {
 124     return w->type() == Qt::Dialog
 125            || w->type() == Qt::Sheet
 126            || w->type() == Qt::Tool
 127            || w->type() == Qt::SplashScreen
 128            || w->type() == Qt::ToolTip
 129            || w->type() == Qt::Drawer
 130            || w->type() == Qt::Popup;
 131 }
 132
 133 static inline QImage::Format imageFormatForDepth(int depth)
 134 {
 135     switch (depth) {
 136         case 32: return QImage::Format_ARGB32_Premultiplied;
 137         case 24: return QImage::Format_RGB32;
 138         case 16: return QImage::Format_RGB16;
 139         default: return QImage::Format_Invalid;
 140     }
 141 }
 142
 143 static inline bool positionIncludesFrame(QWindow *w)
 144 {
 145     return qt_window_private(w)->positionPolicy == QWindowPrivate::WindowFrameInclusive;
 146 }
 147
 148 QXcbWindow::QXcbWindow(QWindow *window)
 149     : QPlatformWindow(window)
 150     , m_window(0)
 151     , m_syncCounter(0)
 152     , m_gravity(XCB_GRAVITY_STATIC)
 153     , m_mapped(false)
 154     , m_transparent(false)
 155     , m_deferredActivation(false)
 156     , m_netWmUserTimeWindow(XCB_NONE)
 157     , m_dirtyFrameMargins(false)
 158 #if defined(XCB_USE_EGL)
 159     , m_eglSurface(0)
 160 #endif
 161     , m_lastWindowStateEvent(-1)
 162 {
 163     m_screen = static_cast<QXcbScreen *>(window->screen()->handle());
 164
 165     setConnection(m_screen->connection());
 166
 167     create();
 168 }
 169
 170 void QXcbWindow::create()
 171 {
 172     destroy();
 173
 174     m_deferredExpose = false;
 175     m_configureNotifyPending = true;
 176     m_windowState = Qt::WindowNoState;
 177
 178     Qt::WindowType type = window()->type();
 179
 180     if (type == Qt::Desktop) {
 181         m_window = m_screen->root();
 182         m_depth = m_screen->screen()->root_depth;
 183         m_imageFormat = imageFormatForDepth(m_depth);
 184         connection()->addWindow(m_window, this);
 185         return;
 186     }
 187
 188     // Determine gravity from initial position. Do not change
 189     // later as it will cause the window to move uncontrollably.
 190     m_gravity = positionIncludesFrame(window()) ?
 191                 XCB_GRAVITY_NORTH_WEST : XCB_GRAVITY_STATIC;
 192
 193     const quint32 mask = XCB_CW_BACK_PIXMAP | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_SAVE_UNDER | XCB_CW_EVENT_MASK;
 194     const quint32 values[] = {
 195         // XCB_CW_BACK_PIXMAP
 196         XCB_NONE,
 197         // XCB_CW_OVERRIDE_REDIRECT
 198         type == Qt::Popup || type == Qt::ToolTip,
 199         // XCB_CW_SAVE_UNDER
 200         type == Qt::Popup || type == Qt::Tool || type == Qt::SplashScreen || type == Qt::ToolTip || type == Qt::Drawer,
 201         // XCB_CW_EVENT_MASK
 202         XCB_EVENT_MASK_EXPOSURE
 203         | XCB_EVENT_MASK_STRUCTURE_NOTIFY
 204         | XCB_EVENT_MASK_KEY_PRESS
 205         | XCB_EVENT_MASK_KEY_RELEASE
 206         | XCB_EVENT_MASK_BUTTON_PRESS
 207         | XCB_EVENT_MASK_BUTTON_RELEASE
 208         | XCB_EVENT_MASK_BUTTON_MOTION
 209         | XCB_EVENT_MASK_ENTER_WINDOW
 210         | XCB_EVENT_MASK_LEAVE_WINDOW
 211         | XCB_EVENT_MASK_POINTER_MOTION
 212         | XCB_EVENT_MASK_PROPERTY_CHANGE
 213         | XCB_EVENT_MASK_FOCUS_CHANGE
 214     };
 215
 216     // Parameters to XCreateWindow() are frame corner + inner size.
 217     // This fits in case position policy is frame inclusive. There is
 218     // currently no way to implement it for frame-exclusive geometries.
 219     QRect rect = window()->geometry();
 220     QPlatformWindow::setGeometry(rect);
 221
 222     rect.setWidth(qBound(1, rect.width(), XCOORD_MAX));
 223     rect.setHeight(qBound(1, rect.height(), XCOORD_MAX));
 224
 225     xcb_window_t xcb_parent_id = m_screen->root();
 226     if (parent())
 227         xcb_parent_id = static_cast<QXcbWindow *>(parent())->xcb_window();
 228
 229     m_format = window()->requestedFormat();
 230
 231 #if (defined(XCB_USE_GLX) || defined(XCB_USE_EGL)) && defined(XCB_USE_XLIB)
 232     if (QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::OpenGL)) {
 233 #if defined(XCB_USE_GLX)
 234         XVisualInfo *visualInfo = qglx_findVisualInfo(DISPLAY_FROM_XCB(m_screen), m_screen->screenNumber(), &m_format);
 235         if (!visualInfo && window()->surfaceType() == QSurface::OpenGLSurface)
 236             qFatal("Could not initialize GLX");
 237 #elif defined(XCB_USE_EGL)
 238         EGLDisplay eglDisplay = connection()->egl_display();
 239         EGLConfig eglConfig = q_configFromGLFormat(eglDisplay, m_format, true);
 240         m_format = q_glFormatFromConfig(eglDisplay, eglConfig);
 241
 242         VisualID id = QXlibEglIntegration::getCompatibleVisualId(DISPLAY_FROM_XCB(this), eglDisplay, eglConfig);
 243
 244         XVisualInfo visualInfoTemplate;
 245         memset(&visualInfoTemplate, 0, sizeof(XVisualInfo));
 246         visualInfoTemplate.visualid = id;
 247
 248         XVisualInfo *visualInfo;
 249         int matchingCount = 0;
 250         visualInfo = XGetVisualInfo(DISPLAY_FROM_XCB(this), VisualIDMask, &visualInfoTemplate, &matchingCount);
 251         if (!visualInfo && window()->surfaceType() == QSurface::OpenGLSurface)
 252             qFatal("Could not initialize EGL");
 253 #endif //XCB_USE_GLX
 254         if (visualInfo) {
 255             m_depth = visualInfo->depth;
 256             m_imageFormat = imageFormatForDepth(m_depth);
 257             Colormap cmap = XCreateColormap(DISPLAY_FROM_XCB(this), xcb_parent_id, visualInfo->visual, AllocNone);
 258
 259             XSetWindowAttributes a;
 260             a.background_pixel = WhitePixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 261             a.border_pixel = BlackPixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 262             a.colormap = cmap;
 263
 264             m_visualId = visualInfo->visualid;
 265
 266             m_window = XCreateWindow(DISPLAY_FROM_XCB(this), xcb_parent_id, rect.x(), rect.y(), rect.width(), rect.height(),
 267                                       0, visualInfo->depth, InputOutput, visualInfo->visual,
 268                                       CWBackPixel|CWBorderPixel|CWColormap, &a);
 269
 270             XFree(visualInfo);
 271         }
 272     }
 273
 274     if (!m_window)
 275 #endif //defined(XCB_USE_GLX) || defined(XCB_USE_EGL)
 276     {
 277         m_window = xcb_generate_id(xcb_connection());
 278         m_depth = m_screen->screen()->root_depth;
 279         m_imageFormat = imageFormatForDepth(m_depth);
 280         m_visualId = m_screen->screen()->root_visual;
 281
 282         Q_XCB_CALL(xcb_create_window(xcb_connection(),
 283                                      XCB_COPY_FROM_PARENT,            // depth -- same as root
 284                                      m_window,                        // window id
 285                                      xcb_parent_id,                   // parent window id
 286                                      rect.x(),
 287                                      rect.y(),
 288                                      rect.width(),
 289                                      rect.height(),
 290                                      0,                               // border width
 291                                      XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
 292                                      m_visualId,                      // visual
 293                                      0,                               // value mask
 294                                      0));                             // value list
 295     }
 296
 297     connection()->addWindow(m_window, this);
 298
 299     Q_XCB_CALL(xcb_change_window_attributes(xcb_connection(), m_window, mask, values));
 300
 301     propagateSizeHints();
 302
 303     xcb_atom_t properties[5];
 304     int propertyCount = 0;
 305     properties[propertyCount++] = atom(QXcbAtom::WM_DELETE_WINDOW);
 306     properties[propertyCount++] = atom(QXcbAtom::WM_TAKE_FOCUS);
 307     properties[propertyCount++] = atom(QXcbAtom::_NET_WM_PING);
 308
 309     if (m_screen->syncRequestSupported())
 310         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_SYNC_REQUEST);
 311
 312     if (window()->flags() & Qt::WindowContextHelpButtonHint)
 313         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_CONTEXT_HELP);
 314
 315     Q_XCB_CALL(xcb_change_property(xcb_connection(),
 316                                    XCB_PROP_MODE_REPLACE,
 317                                    m_window,
 318                                    atom(QXcbAtom::WM_PROTOCOLS),
 319                                    XCB_ATOM_ATOM,
 320                                    32,
 321                                    propertyCount,
 322                                    properties));
 323     m_syncValue.hi = 0;
 324     m_syncValue.lo = 0;
 325
 326     if (m_screen->syncRequestSupported()) {
 327         m_syncCounter = xcb_generate_id(xcb_connection());
 328         Q_XCB_CALL(xcb_sync_create_counter(xcb_connection(), m_syncCounter, m_syncValue));
 329
 330         Q_XCB_CALL(xcb_change_property(xcb_connection(),
 331                                        XCB_PROP_MODE_REPLACE,
 332                                        m_window,
 333                                        atom(QXcbAtom::_NET_WM_SYNC_REQUEST_COUNTER),
 334                                        XCB_ATOM_CARDINAL,
 335                                        32,
 336                                        1,
 337                                        &m_syncCounter));
 338     }
 339
 340     // set the PID to let the WM kill the application if unresponsive
 341     long pid = getpid();
 342     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 343                                    atom(QXcbAtom::_NET_WM_PID), XCB_ATOM_CARDINAL, 32,
 344                                    1, &pid));
 345
 346     xcb_wm_hints_t hints;
 347     memset(&hints, 0, sizeof(hints));
 348     xcb_wm_hints_set_normal(&hints);
 349
 350     xcb_wm_hints_set_input(&hints, !(window()->flags() & Qt::WindowDoesNotAcceptFocus));
 351
 352     xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 353
 354     xcb_window_t leader = m_screen->clientLeader();
 355     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 356                                    atom(QXcbAtom::WM_CLIENT_LEADER), XCB_ATOM_WINDOW, 32,
 357                                    1, &leader));
 358
 359 #ifdef XCB_USE_XINPUT2_MAEMO
 360     if (connection()->isUsingXInput2Maemo()) {
 361         XIEventMask xieventmask;
 362         uchar bitmask[2] = { 0, 0 };
 363
 364         xieventmask.deviceid = XIAllMasterDevices;
 365         xieventmask.mask = bitmask;
 366         xieventmask.mask_len = sizeof(bitmask);
 367
 368         XISetMask(bitmask, XI_ButtonPress);
 369         XISetMask(bitmask, XI_ButtonRelease);
 370         XISetMask(bitmask, XI_Motion);
 371
 372         XISelectEvents(DISPLAY_FROM_XCB(this), m_window, &xieventmask, 1);
 373     }
 374 #elif defined(XCB_USE_XINPUT2)
 375     connection()->xi2Select(m_window);
 376 #endif
 377
 378     setWindowState(window()->windowState());
 379     setWindowFlags(window()->flags());
 380     setWindowTitle(window()->title());
 381
 382     if (window()->flags() & Qt::WindowTransparentForInput)
 383         setTransparentForMouseEvents(true);
 384
 385 #ifndef QT_NO_DRAGANDDROP
 386     connection()->drag()->dndEnable(this, true);
 387 #endif
 388 }
 389
 390 QXcbWindow::~QXcbWindow()
 391 {
 392     destroy();
 393 }
 394
 395 void QXcbWindow::destroy()
 396 {
 397     if (m_syncCounter && m_screen->syncRequestSupported())
 398         Q_XCB_CALL(xcb_sync_destroy_counter(xcb_connection(), m_syncCounter));
 399     if (m_window) {
 400         if (m_netWmUserTimeWindow) {
 401             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
 402             // Some window managers, like metacity, do XSelectInput on the _NET_WM_USER_TIME_WINDOW window,
 403             // without trapping BadWindow (which crashes when the user time window is destroyed).
 404             connection()->sync();
 405             xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow);
 406             m_netWmUserTimeWindow = XCB_NONE;
 407         }
 408         connection()->removeWindow(m_window);
 409         Q_XCB_CALL(xcb_destroy_window(xcb_connection(), m_window));
 410         m_window = 0;
 411     }
 412     m_mapped = false;
 413
 414 #if defined(XCB_USE_EGL)
 415     delete m_eglSurface;
 416     m_eglSurface = 0;
 417 #endif
 418 }
 419
 420 void QXcbWindow::setGeometry(const QRect &rect)
 421 {
 422     QPlatformWindow::setGeometry(rect);
 423
 424     propagateSizeHints();
 425     const QRect wmGeometry = windowToWmGeometry(rect);
 426
 427     const quint32 mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
 428     const qint32 values[] = {
 429         qBound<qint32>(-XCOORD_MAX, wmGeometry.x(),      XCOORD_MAX),
 430         qBound<qint32>(-XCOORD_MAX, wmGeometry.y(),      XCOORD_MAX),
 431         qBound<qint32>(1,           wmGeometry.width(),  XCOORD_MAX),
 432         qBound<qint32>(1,           wmGeometry.height(), XCOORD_MAX),
 433     };
 434
 435     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, reinterpret_cast<const quint32*>(values)));
 436
 437     xcb_flush(xcb_connection());
 438 }
 439
 440 QMargins QXcbWindow::frameMargins() const
 441 {
 442     if (m_dirtyFrameMargins) {
 443         xcb_window_t window = m_window;
 444         xcb_window_t parent = m_window;
 445
 446         bool foundRoot = false;
 447
 448         const QVector<xcb_window_t> &virtualRoots =
 449             connection()->wmSupport()->virtualRoots();
 450
 451         while (!foundRoot) {
 452             xcb_query_tree_cookie_t cookie = xcb_query_tree_unchecked(xcb_connection(), parent);
 453
 454             xcb_query_tree_reply_t *reply = xcb_query_tree_reply(xcb_connection(), cookie, NULL);
 455             if (reply) {
 456                 if (reply->root == reply->parent || virtualRoots.indexOf(reply->parent) != -1) {
 457                     foundRoot = true;
 458                 } else {
 459                     window = parent;
 460                     parent = reply->parent;
 461                 }
 462
 463                 free(reply);
 464             } else {
 465                 m_dirtyFrameMargins = false;
 466                 m_frameMargins = QMargins();
 467                 return m_frameMargins;
 468             }
 469         }
 470
 471         QPoint offset;
 472
 473         xcb_translate_coordinates_reply_t *reply =
 474             xcb_translate_coordinates_reply(
 475                 xcb_connection(),
 476                 xcb_translate_coordinates(xcb_connection(), window, parent, 0, 0),
 477                 NULL);
 478
 479         if (reply) {
 480             offset = QPoint(reply->dst_x, reply->dst_y);
 481             free(reply);
 482         }
 483
 484         xcb_get_geometry_reply_t *geom =
 485             xcb_get_geometry_reply(
 486                 xcb_connection(),
 487                 xcb_get_geometry(xcb_connection(), parent),
 488                 NULL);
 489
 490         if (geom) {
 491             // --
 492             // add the border_width for the window managers frame... some window managers
 493             // do not use a border_width of zero for their frames, and if we the left and
 494             // top strut, we ensure that pos() is absolutely correct.  frameGeometry()
 495             // will still be incorrect though... perhaps i should have foffset as well, to
 496             // indicate the frame offset (equal to the border_width on X).
 497             // - Brad
 498             // -- copied from qwidget_x11.cpp
 499
 500             int left = offset.x() + geom->border_width;
 501             int top = offset.y() + geom->border_width;
 502             int right = geom->width + geom->border_width - geometry().width() - offset.x();
 503             int bottom = geom->height + geom->border_width - geometry().height() - offset.y();
 504
 505             m_frameMargins = QMargins(left, top, right, bottom);
 506
 507             free(geom);
 508         }
 509
 510         m_dirtyFrameMargins = false;
 511     }
 512
 513     return m_frameMargins;
 514 }
 515
 516 void QXcbWindow::setVisible(bool visible)
 517 {
 518     if (visible)
 519         show();
 520     else
 521         hide();
 522 }
 523
 524 void QXcbWindow::show()
 525 {
 526     if (window()->isTopLevel()) {
 527         xcb_get_property_cookie_t cookie = xcb_get_wm_hints_unchecked(xcb_connection(), m_window);
 528
 529         xcb_wm_hints_t hints;
 530         xcb_get_wm_hints_reply(xcb_connection(), cookie, &hints, NULL);
 531
 532         if (window()->windowState() & Qt::WindowMinimized)
 533             xcb_wm_hints_set_iconic(&hints);
 534         else
 535             xcb_wm_hints_set_normal(&hints);
 536
 537         xcb_wm_hints_set_input(&hints, !(window()->flags() & Qt::WindowDoesNotAcceptFocus));
 538
 539         xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 540
 541         // update WM_NORMAL_HINTS
 542         propagateSizeHints();
 543
 544         // update WM_TRANSIENT_FOR
 545         if (isTransient(window())) {
 546             xcb_window_t transientXcbParent = 0;
 547             if (const QWindow *tp = window()->transientParent())
 548                 transientXcbParent = static_cast<const QXcbWindow *>(tp->handle())->winId();
 549             // Default to client leader if there is no transient parent, else modal dialogs can
 550             // be hidden by their parents.
 551             if (!transientXcbParent)
 552                 transientXcbParent = static_cast<QXcbScreen *>(screen())->clientLeader();
 553             if (transientXcbParent) { // ICCCM 4.1.2.6
 554                 Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 555                                                XCB_ATOM_WM_TRANSIENT_FOR, XCB_ATOM_WINDOW, 32,
 556                                                1, &transientXcbParent));
 557             }
 558         }
 559
 560         // update _MOTIF_WM_HINTS
 561         updateMotifWmHintsBeforeMap();
 562
 563         // update _NET_WM_STATE
 564         updateNetWmStateBeforeMap();
 565     }
 566
 567     if (connection()->time() != XCB_TIME_CURRENT_TIME)
 568         updateNetWmUserTime(connection()->time());
 569
 570     Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 571     xcb_flush(xcb_connection());
 572
 573     connection()->sync();
 574 }
 575
 576 void QXcbWindow::hide()
 577 {
 578     Q_XCB_CALL(xcb_unmap_window(xcb_connection(), m_window));
 579
 580     // send synthetic UnmapNotify event according to icccm 4.1.4
 581     xcb_unmap_notify_event_t event;
 582     event.response_type = XCB_UNMAP_NOTIFY;
 583     event.event = m_screen->root();
 584     event.window = m_window;
 585     event.from_configure = false;
 586     Q_XCB_CALL(xcb_send_event(xcb_connection(), false, m_screen->root(),
 587                               XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event));
 588
 589     xcb_flush(xcb_connection());
 590
 591     m_mapped = false;
 592 }
 593
 594 struct QtMotifWmHints {
 595     quint32 flags, functions, decorations;
 596     qint32 input_mode;
 597     quint32 status;
 598 };
 599
 600 enum {
 601     MWM_HINTS_FUNCTIONS   = (1L << 0),
 602
 603     MWM_FUNC_ALL      = (1L << 0),
 604     MWM_FUNC_RESIZE   = (1L << 1),
 605     MWM_FUNC_MOVE     = (1L << 2),
 606     MWM_FUNC_MINIMIZE = (1L << 3),
 607     MWM_FUNC_MAXIMIZE = (1L << 4),
 608     MWM_FUNC_CLOSE    = (1L << 5),
 609
 610     MWM_HINTS_DECORATIONS = (1L << 1),
 611
 612     MWM_DECOR_ALL      = (1L << 0),
 613     MWM_DECOR_BORDER   = (1L << 1),
 614     MWM_DECOR_RESIZEH  = (1L << 2),
 615     MWM_DECOR_TITLE    = (1L << 3),
 616     MWM_DECOR_MENU     = (1L << 4),
 617     MWM_DECOR_MINIMIZE = (1L << 5),
 618     MWM_DECOR_MAXIMIZE = (1L << 6),
 619
 620     MWM_HINTS_INPUT_MODE = (1L << 2),
 621
 622     MWM_INPUT_MODELESS                  = 0L,
 623     MWM_INPUT_PRIMARY_APPLICATION_MODAL = 1L,
 624     MWM_INPUT_FULL_APPLICATION_MODAL    = 3L
 625 };
 626
 627 static QtMotifWmHints getMotifWmHints(QXcbConnection *c, xcb_window_t window)
 628 {
 629     QtMotifWmHints hints;
 630
 631     xcb_get_property_cookie_t get_cookie =
 632         xcb_get_property_unchecked(c->xcb_connection(), 0, window, c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 633                          c->atom(QXcbAtom::_MOTIF_WM_HINTS), 0, 20);
 634
 635     xcb_get_property_reply_t *reply =
 636         xcb_get_property_reply(c->xcb_connection(), get_cookie, NULL);
 637
 638     if (reply && reply->format == 32 && reply->type == c->atom(QXcbAtom::_MOTIF_WM_HINTS)) {
 639         hints = *((QtMotifWmHints *)xcb_get_property_value(reply));
 640     } else {
 641         hints.flags = 0L;
 642         hints.functions = MWM_FUNC_ALL;
 643         hints.decorations = MWM_DECOR_ALL;
 644         hints.input_mode = 0L;
 645         hints.status = 0L;
 646     }
 647
 648     free(reply);
 649
 650     return hints;
 651 }
 652
 653 static void setMotifWmHints(QXcbConnection *c, xcb_window_t window, const QtMotifWmHints &hints)
 654 {
 655     if (hints.flags != 0l) {
 656         Q_XCB_CALL2(xcb_change_property(c->xcb_connection(),
 657                                        XCB_PROP_MODE_REPLACE,
 658                                        window,
 659                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 660                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 661                                        32,
 662                                        5,
 663                                        &hints), c);
 664     } else {
 665         Q_XCB_CALL2(xcb_delete_property(c->xcb_connection(), window, c->atom(QXcbAtom::_MOTIF_WM_HINTS)), c);
 666     }
 667 }
 668
 669 QXcbWindow::NetWmStates QXcbWindow::netWmStates()
 670 {
 671     NetWmStates result(0);
 672
 673     xcb_get_property_cookie_t get_cookie =
 674         xcb_get_property_unchecked(xcb_connection(), 0, m_window, atom(QXcbAtom::_NET_WM_STATE),
 675                          XCB_ATOM_ATOM, 0, 1024);
 676
 677     xcb_get_property_reply_t *reply =
 678         xcb_get_property_reply(xcb_connection(), get_cookie, NULL);
 679
 680     if (reply && reply->format == 32 && reply->type == XCB_ATOM_ATOM) {
 681         const xcb_atom_t *states = static_cast<const xcb_atom_t *>(xcb_get_property_value(reply));
 682         const xcb_atom_t *statesEnd = states + reply->length;
 683         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_ABOVE)))
 684             result |= NetWmStateAbove;
 685         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_BELOW)))
 686             result |= NetWmStateBelow;
 687         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN)))
 688             result |= NetWmStateFullScreen;
 689         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ)))
 690             result |= NetWmStateMaximizedHorz;
 691         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT)))
 692             result |= NetWmStateMaximizedVert;
 693         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MODAL)))
 694             result |= NetWmStateModal;
 695         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP)))
 696             result |= NetWmStateStaysOnTop;
 697         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_DEMANDS_ATTENTION)))
 698             result |= NetWmStateDemandsAttention;
 699         free(reply);
 700     } else {
 701 #ifdef NET_WM_STATE_DEBUG
 702         printf("getting net wm state (%x), empty\n", m_window);
 703 #endif
 704     }
 705
 706     return result;
 707 }
 708
 709 void QXcbWindow::setNetWmStates(NetWmStates states)
 710 {
 711     QVector<xcb_atom_t> atoms;
 712     if (states & NetWmStateAbove)
 713         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_ABOVE));
 714     if (states & NetWmStateBelow)
 715         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_BELOW));
 716     if (states & NetWmStateFullScreen)
 717         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 718     if (states & NetWmStateMaximizedHorz)
 719         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ));
 720     if (states & NetWmStateMaximizedVert)
 721         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 722     if (states & NetWmStateModal)
 723         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MODAL));
 724     if (states & NetWmStateStaysOnTop)
 725         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP));
 726     if (states & NetWmStateDemandsAttention)
 727         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_DEMANDS_ATTENTION));
 728
 729     if (atoms.isEmpty()) {
 730         Q_XCB_CALL(xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_STATE)));
 731     } else {
 732         Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 733                                        atom(QXcbAtom::_NET_WM_STATE), XCB_ATOM_ATOM, 32,
 734                                        atoms.count(), atoms.constData()));
 735     }
 736     xcb_flush(xcb_connection());
 737 }
 738
 739 void QXcbWindow::setWindowFlags(Qt::WindowFlags flags)
 740 {
 741     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 742
 743     if (type == Qt::ToolTip)
 744         flags |= Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint;
 745     if (type == Qt::Popup)
 746         flags |= Qt::X11BypassWindowManagerHint;
 747
 748     if (flags & Qt::WindowTransparentForInput) {
 749         uint32_t mask = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_VISIBILITY_CHANGE
 750                  | XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_RESIZE_REDIRECT
 751                 | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT
 752                 | XCB_EVENT_MASK_FOCUS_CHANGE  | XCB_EVENT_MASK_PROPERTY_CHANGE
 753                 | XCB_EVENT_MASK_COLOR_MAP_CHANGE | XCB_EVENT_MASK_OWNER_GRAB_BUTTON;
 754         xcb_change_window_attributes(xcb_connection(), xcb_window(), XCB_CW_EVENT_MASK, &mask);
 755     }
 756
 757     setNetWmWindowFlags(flags);
 758     setMotifWindowFlags(flags);
 759
 760     setTransparentForMouseEvents(flags & Qt::WindowTransparentForInput);
 761     updateDoesNotAcceptFocus(flags & Qt::WindowDoesNotAcceptFocus);
 762 }
 763
 764 void QXcbWindow::setMotifWindowFlags(Qt::WindowFlags flags)
 765 {
 766     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 767
 768     QtMotifWmHints mwmhints;
 769     mwmhints.flags = 0L;
 770     mwmhints.functions = 0L;
 771     mwmhints.decorations = 0;
 772     mwmhints.input_mode = 0L;
 773     mwmhints.status = 0L;
 774
 775     if (type != Qt::SplashScreen) {
 776         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 777
 778         bool customize = flags & Qt::CustomizeWindowHint;
 779         if (!(flags & Qt::FramelessWindowHint) && !(customize && !(flags & Qt::WindowTitleHint))) {
 780             mwmhints.decorations |= MWM_DECOR_BORDER;
 781             mwmhints.decorations |= MWM_DECOR_RESIZEH;
 782             mwmhints.decorations |= MWM_DECOR_TITLE;
 783
 784             if (flags & Qt::WindowSystemMenuHint)
 785                 mwmhints.decorations |= MWM_DECOR_MENU;
 786
 787             if (flags & Qt::WindowMinimizeButtonHint) {
 788                 mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 789                 mwmhints.functions |= MWM_FUNC_MINIMIZE;
 790             }
 791
 792             if (flags & Qt::WindowMaximizeButtonHint) {
 793                 mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 794                 mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 795             }
 796
 797             if (flags & Qt::WindowCloseButtonHint)
 798                 mwmhints.functions |= MWM_FUNC_CLOSE;
 799         }
 800     } else {
 801         // if type == Qt::SplashScreen
 802         mwmhints.decorations = MWM_DECOR_ALL;
 803     }
 804
 805     if (mwmhints.functions != 0) {
 806         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 807         mwmhints.functions |= MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 808     } else {
 809         mwmhints.functions = MWM_FUNC_ALL;
 810     }
 811
 812     if (!(flags & Qt::FramelessWindowHint)
 813         && flags & Qt::CustomizeWindowHint
 814         && flags & Qt::WindowTitleHint
 815         && !(flags &
 816              (Qt::WindowMinimizeButtonHint
 817               | Qt::WindowMaximizeButtonHint
 818               | Qt::WindowCloseButtonHint)))
 819     {
 820         // a special case - only the titlebar without any button
 821         mwmhints.flags = MWM_HINTS_FUNCTIONS;
 822         mwmhints.functions = MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 823         mwmhints.decorations = 0;
 824     }
 825
 826     setMotifWmHints(connection(), m_window, mwmhints);
 827 }
 828
 829 void QXcbWindow::changeNetWmState(bool set, xcb_atom_t one, xcb_atom_t two)
 830 {
 831     xcb_client_message_event_t event;
 832
 833     event.response_type = XCB_CLIENT_MESSAGE;
 834     event.format = 32;
 835     event.window = m_window;
 836     event.type = atom(QXcbAtom::_NET_WM_STATE);
 837     event.data.data32[0] = set ? 1 : 0;
 838     event.data.data32[1] = one;
 839     event.data.data32[2] = two;
 840     event.data.data32[3] = 0;
 841     event.data.data32[4] = 0;
 842
 843     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));
 844 }
 845
 846 void QXcbWindow::setWindowState(Qt::WindowState state)
 847 {
 848     if (state == m_windowState)
 849         return;
 850
 851     // unset old state
 852     switch (m_windowState) {
 853     case Qt::WindowMinimized:
 854         Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 855         break;
 856     case Qt::WindowMaximized:
 857         changeNetWmState(false,
 858                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 859                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 860         break;
 861     case Qt::WindowFullScreen:
 862         changeNetWmState(false, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 863         break;
 864     default:
 865         break;
 866     }
 867
 868     // set new state
 869     switch (state) {
 870     case Qt::WindowMinimized:
 871         {
 872             xcb_client_message_event_t event;
 873
 874             event.response_type = XCB_CLIENT_MESSAGE;
 875             event.format = 32;
 876             event.window = m_window;
 877             event.type = atom(QXcbAtom::WM_CHANGE_STATE);
 878             event.data.data32[0] = XCB_WM_STATE_ICONIC;
 879             event.data.data32[1] = 0;
 880             event.data.data32[2] = 0;
 881             event.data.data32[3] = 0;
 882             event.data.data32[4] = 0;
 883
 884             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));
 885         }
 886         break;
 887     case Qt::WindowMaximized:
 888         changeNetWmState(true,
 889                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 890                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 891         break;
 892     case Qt::WindowFullScreen:
 893         changeNetWmState(true, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 894         break;
 895     case Qt::WindowNoState:
 896         break;
 897     default:
 898         break;
 899     }
 900
 901     connection()->sync();
 902
 903     m_windowState = state;
 904 }
 905
 906 void QXcbWindow::setNetWmWindowFlags(Qt::WindowFlags flags)
 907 {
 908     // in order of decreasing priority
 909     QVector<uint> windowTypes;
 910
 911     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 912
 913     switch (type) {
 914     case Qt::Dialog:
 915     case Qt::Sheet:
 916         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DIALOG));
 917         break;
 918     case Qt::Tool:
 919     case Qt::Drawer:
 920         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_UTILITY));
 921         break;
 922     case Qt::ToolTip:
 923         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_TOOLTIP));
 924         break;
 925     case Qt::SplashScreen:
 926         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_SPLASH));
 927         break;
 928     default:
 929         break;
 930     }
 931
 932     if (flags & Qt::FramelessWindowHint)
 933         windowTypes.append(atom(QXcbAtom::_KDE_NET_WM_WINDOW_TYPE_OVERRIDE));
 934
 935     windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_NORMAL));
 936
 937     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 938                                    atom(QXcbAtom::_NET_WM_WINDOW_TYPE), XCB_ATOM_ATOM, 32,
 939                                    windowTypes.count(), windowTypes.constData()));
 940 }
 941
 942 void QXcbWindow::updateMotifWmHintsBeforeMap()
 943 {
 944     QtMotifWmHints mwmhints = getMotifWmHints(connection(), m_window);
 945
 946     if (window()->modality() != Qt::NonModal) {
 947         switch (window()->modality()) {
 948         case Qt::WindowModal:
 949             mwmhints.input_mode = MWM_INPUT_PRIMARY_APPLICATION_MODAL;
 950             break;
 951         case Qt::ApplicationModal:
 952         default:
 953             mwmhints.input_mode = MWM_INPUT_FULL_APPLICATION_MODAL;
 954             break;
 955         }
 956         mwmhints.flags |= MWM_HINTS_INPUT_MODE;
 957     } else {
 958         mwmhints.input_mode = MWM_INPUT_MODELESS;
 959         mwmhints.flags &= ~MWM_HINTS_INPUT_MODE;
 960     }
 961
 962     if (window()->minimumSize() == window()->maximumSize()) {
 963         // fixed size, remove the resize handle (since mwm/dtwm
 964         // isn't smart enough to do it itself)
 965         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 966         if (mwmhints.functions == MWM_FUNC_ALL) {
 967             mwmhints.functions = MWM_FUNC_MOVE;
 968         } else {
 969             mwmhints.functions &= ~MWM_FUNC_RESIZE;
 970         }
 971
 972         if (mwmhints.decorations == MWM_DECOR_ALL) {
 973             mwmhints.flags |= MWM_HINTS_DECORATIONS;
 974             mwmhints.decorations = (MWM_DECOR_BORDER
 975                                     | MWM_DECOR_TITLE
 976                                     | MWM_DECOR_MENU);
 977         } else {
 978             mwmhints.decorations &= ~MWM_DECOR_RESIZEH;
 979         }
 980     }
 981
 982     if (window()->flags() & Qt::WindowMinimizeButtonHint) {
 983         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 984         mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 985         mwmhints.functions |= MWM_FUNC_MINIMIZE;
 986     }
 987     if (window()->flags() & Qt::WindowMaximizeButtonHint) {
 988         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 989         mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 990         mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 991     }
 992     if (window()->flags() & Qt::WindowCloseButtonHint)
 993         mwmhints.functions |= MWM_FUNC_CLOSE;
 994
 995     setMotifWmHints(connection(), m_window, mwmhints);
 996 }
 997
 998 void QXcbWindow::updateNetWmStateBeforeMap()
 999 {
1000     NetWmStates states(0);
1001
1002     const Qt::WindowFlags flags = window()->flags();
1003     if (flags & Qt::WindowStaysOnTopHint) {
1004         states |= NetWmStateAbove;
1005         states |= NetWmStateStaysOnTop;
1006     } else if (flags & Qt::WindowStaysOnBottomHint) {
1007         states |= NetWmStateBelow;
1008     }
1009
1010     if (window()->windowState() & Qt::WindowFullScreen)
1011         states |= NetWmStateFullScreen;
1012
1013     if (window()->windowState() & Qt::WindowMaximized) {
1014         states |= NetWmStateMaximizedHorz;
1015         states |= NetWmStateMaximizedVert;
1016     }
1017
1018     if (window()->modality() != Qt::NonModal)
1019         states |= NetWmStateModal;
1020
1021     setNetWmStates(states);
1022 }
1023
1024 void QXcbWindow::updateNetWmUserTime(xcb_timestamp_t timestamp)
1025 {
1026     xcb_window_t wid = m_window;
1027
1028     const bool isSupportedByWM = connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
1029     if (m_netWmUserTimeWindow || isSupportedByWM) {
1030         if (!m_netWmUserTimeWindow) {
1031             m_netWmUserTimeWindow = xcb_generate_id(xcb_connection());
1032             Q_XCB_CALL(xcb_create_window(xcb_connection(),
1033                                          XCB_COPY_FROM_PARENT,            // depth -- same as root
1034                                          m_netWmUserTimeWindow,                        // window id
1035                                          m_window,                   // parent window id
1036                                          -1, -1, 1, 1,
1037                                          0,                               // border width
1038                                          XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
1039                                          m_visualId,                      // visual
1040                                          0,                               // value mask
1041                                          0));                             // value list
1042             wid = m_netWmUserTimeWindow;
1043             xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW),
1044                                 XCB_ATOM_WINDOW, 32, 1, &m_netWmUserTimeWindow);
1045             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME));
1046         } else if (!isSupportedByWM) {
1047             // WM no longer supports it, then we should remove the
1048             // _NET_WM_USER_TIME_WINDOW atom.
1049             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
1050             xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow);
1051             m_netWmUserTimeWindow = XCB_NONE;
1052         } else {
1053             wid = m_netWmUserTimeWindow;
1054         }
1055     }
1056     xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, wid, atom(QXcbAtom::_NET_WM_USER_TIME),
1057                         XCB_ATOM_CARDINAL, 32, 1, &timestamp);
1058 }
1059
1060 void QXcbWindow::setTransparentForMouseEvents(bool transparent)
1061 {
1062     if (transparent == m_transparent)
1063         return;
1064
1065     xcb_rectangle_t rectangle;
1066
1067     xcb_rectangle_t *rect = 0;
1068     int nrect = 0;
1069
1070     if (!transparent) {
1071         rectangle.x = 0;
1072         rectangle.y = 0;
1073         rectangle.width = geometry().width();
1074         rectangle.height = geometry().height();
1075         rect = &rectangle;
1076         nrect = 1;
1077     }
1078
1079     xcb_xfixes_region_t region = xcb_generate_id(xcb_connection());
1080     xcb_xfixes_create_region(xcb_connection(), region, nrect, rect);
1081     xcb_xfixes_set_window_shape_region_checked(xcb_connection(), m_window, XCB_SHAPE_SK_INPUT, 0, 0, region);
1082     xcb_xfixes_destroy_region(xcb_connection(), region);
1083
1084     m_transparent = transparent;
1085 }
1086
1087 void QXcbWindow::updateDoesNotAcceptFocus(bool doesNotAcceptFocus)
1088 {
1089     xcb_get_property_cookie_t cookie = xcb_get_wm_hints_unchecked(xcb_connection(), m_window);
1090
1091     xcb_wm_hints_t hints;
1092     if (!xcb_get_wm_hints_reply(xcb_connection(), cookie, &hints, NULL)) {
1093         return;
1094     }
1095
1096     xcb_wm_hints_set_input(&hints, !doesNotAcceptFocus);
1097     xcb_set_wm_hints(xcb_connection(), m_window, &hints);
1098 }
1099
1100 WId QXcbWindow::winId() const
1101 {
1102     return m_window;
1103 }
1104
1105 void QXcbWindow::setParent(const QPlatformWindow *parent)
1106 {
1107     QPoint topLeft = geometry().topLeft();
1108
1109     xcb_window_t xcb_parent_id = parent ? static_cast<const QXcbWindow *>(parent)->xcb_window() : m_screen->root();
1110     Q_XCB_CALL(xcb_reparent_window(xcb_connection(), xcb_window(), xcb_parent_id, topLeft.x(), topLeft.y()));
1111 }
1112
1113 void QXcbWindow::setWindowTitle(const QString &title)
1114 {
1115     QByteArray ba = title.toUtf8();
1116     Q_XCB_CALL(xcb_change_property(xcb_connection(),
1117                                    XCB_PROP_MODE_REPLACE,
1118                                    m_window,
1119                                    atom(QXcbAtom::_NET_WM_NAME),
1120                                    atom(QXcbAtom::UTF8_STRING),
1121                                    8,
1122                                    ba.length(),
1123                                    ba.constData()));
1124 }
1125
1126 void QXcbWindow::setWindowIcon(const QIcon &icon)
1127 {
1128     QVector<quint32> icon_data;
1129
1130     if (!icon.isNull()) {
1131         QList<QSize> availableSizes = icon.availableSizes();
1132         if (availableSizes.isEmpty()) {
1133             // try to use default sizes since the icon can be a scalable image like svg.
1134             availableSizes.push_back(QSize(16,16));
1135             availableSizes.push_back(QSize(32,32));
1136             availableSizes.push_back(QSize(64,64));
1137             availableSizes.push_back(QSize(128,128));
1138         }
1139         for (int i = 0; i < availableSizes.size(); ++i) {
1140             QSize size = availableSizes.at(i);
1141             QPixmap pixmap = icon.pixmap(size);
1142             if (!pixmap.isNull()) {
1143                 QImage image = pixmap.toImage().convertToFormat(QImage::Format_ARGB32);
1144                 int pos = icon_data.size();
1145                 icon_data.resize(pos + 2 + image.width()*image.height());
1146                 icon_data[pos++] = image.width();
1147                 icon_data[pos++] = image.height();
1148                 memcpy(icon_data.data() + pos, image.bits(), image.width()*image.height()*4);
1149             }
1150         }
1151     }
1152
1153     if (!icon_data.isEmpty()) {
1154         Q_XCB_CALL(xcb_change_property(xcb_connection(),
1155                                        XCB_PROP_MODE_REPLACE,
1156                                        m_window,
1157                                        atom(QXcbAtom::_NET_WM_ICON),
1158                                        atom(QXcbAtom::CARDINAL),
1159                                        32,
1160                                        icon_data.size(),
1161                                        (unsigned char *) icon_data.data()));
1162     } else {
1163         Q_XCB_CALL(xcb_delete_property(xcb_connection(),
1164                                        m_window,
1165                                        atom(QXcbAtom::_NET_WM_ICON)));
1166     }
1167 }
1168
1169 void QXcbWindow::raise()
1170 {
1171     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
1172     const quint32 values[] = { XCB_STACK_MODE_ABOVE };
1173     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
1174 }
1175
1176 void QXcbWindow::lower()
1177 {
1178     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
1179     const quint32 values[] = { XCB_STACK_MODE_BELOW };
1180     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
1181 }
1182
1183 // Adapt the geometry to match the WM expection with regards
1184 // to gravity.
1185 QRect QXcbWindow::windowToWmGeometry(QRect r) const
1186 {
1187     if (m_dirtyFrameMargins || m_frameMargins.isNull())
1188         return r;
1189     const bool frameInclusive = positionIncludesFrame(window());
1190     // XCB_GRAVITY_STATIC requires the inner geometry, whereas
1191     // XCB_GRAVITY_NORTH_WEST requires the frame geometry
1192     if (frameInclusive && m_gravity == XCB_GRAVITY_STATIC) {
1193         r.translate(m_frameMargins.left(), m_frameMargins.top());
1194     } else if (!frameInclusive && m_gravity == XCB_GRAVITY_NORTH_WEST) {
1195         r.translate(-m_frameMargins.left(), -m_frameMargins.top());
1196     }
1197     return r;
1198 }
1199
1200 void QXcbWindow::propagateSizeHints()
1201 {
1202     // update WM_NORMAL_HINTS
1203     xcb_size_hints_t hints;
1204     memset(&hints, 0, sizeof(hints));
1205
1206     const QRect rect = windowToWmGeometry(geometry());
1207
1208     QWindow *win = window();
1209
1210     xcb_size_hints_set_position(&hints, true, rect.x(), rect.y());
1211     xcb_size_hints_set_size(&hints, true, rect.width(), rect.height());
1212     xcb_size_hints_set_win_gravity(&hints, m_gravity);
1213
1214     QSize minimumSize = win->minimumSize();
1215     QSize maximumSize = win->maximumSize();
1216     QSize baseSize = win->baseSize();
1217     QSize sizeIncrement = win->sizeIncrement();
1218
1219     if (minimumSize.width() > 0 || minimumSize.height() > 0)
1220         xcb_size_hints_set_min_size(&hints, minimumSize.width(), minimumSize.height());
1221
1222     if (maximumSize.width() < QWINDOWSIZE_MAX || maximumSize.height() < QWINDOWSIZE_MAX)
1223         xcb_size_hints_set_max_size(&hints,
1224                                     qMin(XCOORD_MAX, maximumSize.width()),
1225                                     qMin(XCOORD_MAX, maximumSize.height()));
1226
1227     if (sizeIncrement.width() > 0 || sizeIncrement.height() > 0) {
1228         xcb_size_hints_set_base_size(&hints, baseSize.width(), baseSize.height());
1229         xcb_size_hints_set_resize_inc(&hints, sizeIncrement.width(), sizeIncrement.height());
1230     }
1231
1232     xcb_set_wm_normal_hints(xcb_connection(), m_window, &hints);
1233 }
1234
1235 void QXcbWindow::requestActivateWindow()
1236 {
1237     if (!m_mapped) {
1238         m_deferredActivation = true;
1239         return;
1240     }
1241     m_deferredActivation = false;
1242
1243     updateNetWmUserTime(connection()->time());
1244
1245     if (window()->isTopLevel()
1246         && connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_ACTIVE_WINDOW))) {
1247         xcb_client_message_event_t event;
1248
1249         event.response_type = XCB_CLIENT_MESSAGE;
1250         event.format = 32;
1251         event.window = m_window;
1252         event.type = atom(QXcbAtom::_NET_ACTIVE_WINDOW);
1253         event.data.data32[0] = 1;
1254         event.data.data32[1] = connection()->time();
1255         QWindow *focusWindow = QGuiApplication::focusWindow();
1256         event.data.data32[2] = focusWindow ? focusWindow->winId() : XCB_NONE;
1257         event.data.data32[3] = 0;
1258         event.data.data32[4] = 0;
1259
1260         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));
1261     } else {
1262         Q_XCB_CALL(xcb_set_input_focus(xcb_connection(), XCB_INPUT_FOCUS_PARENT, m_window, connection()->time()));
1263     }
1264
1265     connection()->sync();
1266 }
1267
1268 #if XCB_USE_MAEMO_WINDOW_PROPERTIES
1269 void QXcbWindow::handleContentOrientationChange(Qt::ScreenOrientation orientation)
1270 {
1271     int angle = 0;
1272     switch (orientation) {
1273         case Qt::PortraitOrientation: angle = 270; break;
1274         case Qt::LandscapeOrientation: angle = 0; break;
1275         case Qt::InvertedPortraitOrientation: angle = 90; break;
1276         case Qt::InvertedLandscapeOrientation: angle = 180; break;
1277         case Qt::PrimaryOrientation: break;
1278     }
1279     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
1280                                    atom(QXcbAtom::MeegoTouchOrientationAngle), XCB_ATOM_CARDINAL, 32,
1281                                    1, &angle));
1282 }
1283 #endif
1284
1285 QSurfaceFormat QXcbWindow::format() const
1286 {
1287     // ### return actual format
1288     return m_format;
1289 }
1290
1291 #if defined(XCB_USE_EGL)
1292 QXcbEGLSurface *QXcbWindow::eglSurface() const
1293 {
1294     if (!m_eglSurface) {
1295         EGLDisplay display = connection()->egl_display();
1296         EGLConfig config = q_configFromGLFormat(display, window()->requestedFormat(), true);
1297         EGLSurface surface = eglCreateWindowSurface(display, config, (EGLNativeWindowType)m_window, 0);
1298
1299         m_eglSurface = new QXcbEGLSurface(display, surface);
1300     }
1301
1302     return m_eglSurface;
1303 }
1304 #endif
1305
1306 class ExposeCompressor
1307 {
1308 public:
1309     ExposeCompressor(xcb_window_t window, QRegion *region)
1310         : m_window(window)
1311         , m_region(region)
1312         , m_pending(true)
1313     {
1314     }
1315
1316     bool checkEvent(xcb_generic_event_t *event)
1317     {
1318         if (!event)
1319             return false;
1320         if ((event->response_type & ~0x80) != XCB_EXPOSE)
1321             return false;
1322         xcb_expose_event_t *expose = (xcb_expose_event_t *)event;
1323         if (expose->window != m_window)
1324             return false;
1325         if (expose->count == 0)
1326             m_pending = false;
1327         *m_region |= QRect(expose->x, expose->y, expose->width, expose->height);
1328         return true;
1329     }
1330
1331     bool pending() const
1332     {
1333         return m_pending;
1334     }
1335
1336 private:
1337     xcb_window_t m_window;
1338     QRegion *m_region;
1339     bool m_pending;
1340 };
1341
1342 void QXcbWindow::handleExposeEvent(const xcb_expose_event_t *event)
1343 {
1344     QRect rect(event->x, event->y, event->width, event->height);
1345
1346     if (m_exposeRegion.isEmpty())
1347         m_exposeRegion = rect;
1348     else
1349         m_exposeRegion |= rect;
1350
1351     ExposeCompressor compressor(m_window, &m_exposeRegion);
1352     xcb_generic_event_t *filter = 0;
1353     do {
1354         filter = connection()->checkEvent(compressor);
1355         free(filter);
1356     } while (filter);
1357
1358     // if count is non-zero there are more expose events pending
1359     if (event->count == 0 || !compressor.pending()) {
1360         QWindowSystemInterface::handleExposeEvent(window(), m_exposeRegion);
1361         m_exposeRegion = QRegion();
1362     }
1363 }
1364
1365 void QXcbWindow::handleClientMessageEvent(const xcb_client_message_event_t *event)
1366 {
1367     if (event->format != 32)
1368         return;
1369
1370     if (event->type == atom(QXcbAtom::WM_PROTOCOLS)) {
1371         if (event->data.data32[0] == atom(QXcbAtom::WM_DELETE_WINDOW)) {
1372             QWindowSystemInterface::handleCloseEvent(window());
1373         } else if (event->data.data32[0] == atom(QXcbAtom::WM_TAKE_FOCUS)) {
1374             connection()->setTime(event->data.data32[1]);
1375         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_PING)) {
1376             xcb_client_message_event_t reply = *event;
1377
1378             reply.response_type = XCB_CLIENT_MESSAGE;
1379             reply.window = m_screen->root();
1380
1381             xcb_send_event(xcb_connection(), 0, m_screen->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&reply);
1382             xcb_flush(xcb_connection());
1383         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_SYNC_REQUEST)) {
1384             connection()->setTime(event->data.data32[1]);
1385             m_syncValue.lo = event->data.data32[2];
1386             m_syncValue.hi = event->data.data32[3];
1387         } else {
1388             qWarning() << "QXcbWindow: Unhandled WM_PROTOCOLS message:" << connection()->atomName(event->data.data32[0]);
1389         }
1390 #ifndef QT_NO_DRAGANDDROP
1391     } else if (event->type == atom(QXcbAtom::XdndEnter)) {
1392         connection()->drag()->handleEnter(window(), event);
1393     } else if (event->type == atom(QXcbAtom::XdndPosition)) {
1394         connection()->drag()->handlePosition(window(), event);
1395     } else if (event->type == atom(QXcbAtom::XdndLeave)) {
1396         connection()->drag()->handleLeave(window(), event);
1397     } else if (event->type == atom(QXcbAtom::XdndDrop)) {
1398         connection()->drag()->handleDrop(window(), event);
1399 #endif
1400     } else if (event->type == atom(QXcbAtom::_XEMBED)) { // QSystemTrayIcon
1401     } else {
1402         qWarning() << "QXcbWindow: Unhandled client message:" << connection()->atomName(event->type);
1403     }
1404 }
1405
1406 void QXcbWindow::handleConfigureNotifyEvent(const xcb_configure_notify_event_t *event)
1407 {
1408     bool fromSendEvent = (event->response_type & 0x80);
1409     QPoint pos(event->x, event->y);
1410     if (!parent() && !fromSendEvent) {
1411         // Do not trust the position, query it instead.
1412         xcb_translate_coordinates_cookie_t cookie = xcb_translate_coordinates(xcb_connection(), xcb_window(),
1413                                                                               m_screen->root(), 0, 0);
1414         xcb_translate_coordinates_reply_t *reply = xcb_translate_coordinates_reply(xcb_connection(), cookie, NULL);
1415         if (reply) {
1416             pos.setX(reply->dst_x);
1417             pos.setY(reply->dst_y);
1418             free(reply);
1419         }
1420     }
1421
1422     QRect rect(pos, QSize(event->width, event->height));
1423
1424     QPlatformWindow::setGeometry(rect);
1425     QWindowSystemInterface::handleGeometryChange(window(), rect);
1426
1427     m_configureNotifyPending = false;
1428
1429     if (m_deferredExpose) {
1430         m_deferredExpose = false;
1431         QWindowSystemInterface::handleExposeEvent(window(), QRect(QPoint(), geometry().size()));
1432     }
1433
1434     m_dirtyFrameMargins = true;
1435 }
1436
1437 bool QXcbWindow::isExposed() const
1438 {
1439     return m_mapped;
1440 }
1441
1442 void QXcbWindow::handleMapNotifyEvent(const xcb_map_notify_event_t *event)
1443 {
1444     if (event->window == m_window) {
1445         m_mapped = true;
1446         if (m_deferredActivation)
1447             requestActivateWindow();
1448         if (m_configureNotifyPending)
1449             m_deferredExpose = true;
1450         else
1451             QWindowSystemInterface::handleExposeEvent(window(), QRect(QPoint(), geometry().size()));
1452     }
1453 }
1454
1455 void QXcbWindow::handleUnmapNotifyEvent(const xcb_unmap_notify_event_t *event)
1456 {
1457     if (event->window == m_window) {
1458         m_mapped = false;
1459         QWindowSystemInterface::handleExposeEvent(window(), QRegion());
1460     }
1461 }
1462
1463 static Qt::MouseButtons translateMouseButtons(int s)
1464 {
1465     Qt::MouseButtons ret = 0;
1466     if (s & XCB_BUTTON_MASK_1)
1467         ret |= Qt::LeftButton;
1468     if (s & XCB_BUTTON_MASK_2)
1469         ret |= Qt::MidButton;
1470     if (s & XCB_BUTTON_MASK_3)
1471         ret |= Qt::RightButton;
1472     return ret;
1473 }
1474
1475 static Qt::MouseButton translateMouseButton(xcb_button_t s)
1476 {
1477     switch (s) {
1478     case 1: return Qt::LeftButton;
1479     case 2: return Qt::MidButton;
1480     case 3: return Qt::RightButton;
1481     // Button values 4-7 were already handled as Wheel events, and won't occur here.
1482     case 8: return Qt::BackButton;      // Also known as Qt::ExtraButton1
1483     case 9: return Qt::ForwardButton;   // Also known as Qt::ExtraButton2
1484     case 10: return Qt::ExtraButton3;
1485     case 11: return Qt::ExtraButton4;
1486     case 12: return Qt::ExtraButton5;
1487     case 13: return Qt::ExtraButton6;
1488     case 14: return Qt::ExtraButton7;
1489     case 15: return Qt::ExtraButton8;
1490     case 16: return Qt::ExtraButton9;
1491     case 17: return Qt::ExtraButton10;
1492     case 18: return Qt::ExtraButton11;
1493     case 19: return Qt::ExtraButton12;
1494     case 20: return Qt::ExtraButton13;
1495     case 21: return Qt::ExtraButton14;
1496     case 22: return Qt::ExtraButton15;
1497     case 23: return Qt::ExtraButton16;
1498     case 24: return Qt::ExtraButton17;
1499     case 25: return Qt::ExtraButton18;
1500     case 26: return Qt::ExtraButton19;
1501     case 27: return Qt::ExtraButton20;
1502     case 28: return Qt::ExtraButton21;
1503     case 29: return Qt::ExtraButton22;
1504     case 30: return Qt::ExtraButton23;
1505     case 31: return Qt::ExtraButton24;
1506     default: return Qt::NoButton;
1507     }
1508 }
1509
1510 void QXcbWindow::handleButtonPressEvent(const xcb_button_press_event_t *event)
1511 {
1512     updateNetWmUserTime(event->time);
1513
1514     QPoint local(event->event_x, event->event_y);
1515     QPoint global(event->root_x, event->root_y);
1516
1517     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1518
1519     if (event->detail >= 4 && event->detail <= 7) {
1520         // Logic borrowed from qapplication_x11.cpp
1521         int delta = 120 * ((event->detail == 4 || event->detail == 6) ? 1 : -1);
1522         bool hor = (((event->detail == 4 || event->detail == 5)
1523                      && (modifiers & Qt::AltModifier))
1524                     || (event->detail == 6 || event->detail == 7));
1525
1526         QWindowSystemInterface::handleWheelEvent(window(), event->time,
1527                                                  local, global, delta, hor ? Qt::Horizontal : Qt::Vertical, modifiers);
1528         return;
1529     }
1530
1531     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1532 }
1533
1534 void QXcbWindow::handleButtonReleaseEvent(const xcb_button_release_event_t *event)
1535 {
1536     QPoint local(event->event_x, event->event_y);
1537     QPoint global(event->root_x, event->root_y);
1538     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1539
1540     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1541 }
1542
1543 void QXcbWindow::handleMotionNotifyEvent(const xcb_motion_notify_event_t *event)
1544 {
1545     QPoint local(event->event_x, event->event_y);
1546     QPoint global(event->root_x, event->root_y);
1547     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1548
1549     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1550 }
1551
1552 void QXcbWindow::handleMouseEvent(xcb_button_t detail, uint16_t state, xcb_timestamp_t time, const QPoint &local, const QPoint &global, Qt::KeyboardModifiers modifiers)
1553 {
1554     connection()->setTime(time);
1555
1556     Qt::MouseButtons buttons = translateMouseButtons(state);
1557     Qt::MouseButton button = translateMouseButton(detail);
1558
1559     buttons ^= button; // X event uses state *before*, Qt uses state *after*
1560
1561     QWindowSystemInterface::handleMouseEvent(window(), time, local, global, buttons, modifiers);
1562 }
1563
1564 class EnterEventChecker
1565 {
1566 public:
1567     bool checkEvent(xcb_generic_event_t *event)
1568     {
1569         if (!event)
1570             return false;
1571         if ((event->response_type & ~0x80) != XCB_ENTER_NOTIFY)
1572             return false;
1573
1574         xcb_enter_notify_event_t *enter = (xcb_enter_notify_event_t *)event;
1575
1576         if ((enter->mode != XCB_NOTIFY_MODE_NORMAL && enter->mode != XCB_NOTIFY_MODE_UNGRAB)
1577             || enter->detail == XCB_NOTIFY_DETAIL_VIRTUAL
1578             || enter->detail == XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL)
1579         {
1580             return false;
1581         }
1582
1583         return true;
1584     }
1585 };
1586
1587 void QXcbWindow::handleEnterNotifyEvent(const xcb_enter_notify_event_t *event)
1588 {
1589     connection()->setTime(event->time);
1590
1591     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1592         || event->detail == XCB_NOTIFY_DETAIL_VIRTUAL
1593         || event->detail == XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL)
1594     {
1595         return;
1596     }
1597
1598     const QPoint local(event->event_x, event->event_y);
1599     const QPoint global(event->root_x, event->root_y);
1600     QWindowSystemInterface::handleEnterEvent(window(), local, global);
1601 }
1602
1603 void QXcbWindow::handleLeaveNotifyEvent(const xcb_leave_notify_event_t *event)
1604 {
1605     connection()->setTime(event->time);
1606
1607     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1608         || event->detail == XCB_NOTIFY_DETAIL_VIRTUAL
1609         || event->detail == XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL)
1610     {
1611         return;
1612     }
1613
1614     EnterEventChecker checker;
1615     xcb_enter_notify_event_t *enter = (xcb_enter_notify_event_t *)connection()->checkEvent(checker);
1616     QXcbWindow *enterWindow = enter ? connection()->platformWindowFromId(enter->event) : 0;
1617
1618     if (enterWindow) {
1619         QPoint local(enter->event_x, enter->event_y);
1620         QPoint global(enter->root_x, enter->root_y);
1621
1622         QWindowSystemInterface::handleEnterLeaveEvent(enterWindow->window(), window(), local, global);
1623     } else {
1624         QWindowSystemInterface::handleLeaveEvent(window());
1625     }
1626
1627     free(enter);
1628 }
1629
1630 void QXcbWindow::handlePropertyNotifyEvent(const xcb_property_notify_event_t *event)
1631 {
1632     connection()->setTime(event->time);
1633
1634     const bool propertyDeleted = event->state == XCB_PROPERTY_DELETE;
1635     const xcb_atom_t netWmStateAtom = atom(QXcbAtom::_NET_WM_STATE);
1636     const xcb_atom_t wmStateAtom = atom(QXcbAtom::WM_STATE);
1637
1638     if (event->atom == netWmStateAtom || event->atom == wmStateAtom) {
1639         if (propertyDeleted)
1640             return;
1641
1642         Qt::WindowState newState = Qt::WindowNoState;
1643         if (event->atom == wmStateAtom) { // WM_STATE: Quick check for 'Minimize'.
1644             const xcb_get_property_cookie_t get_cookie =
1645                 xcb_get_property(xcb_connection(), 0, m_window, wmStateAtom,
1646                                  XCB_ATOM_ANY, 0, 1024);
1647
1648             xcb_get_property_reply_t *reply =
1649                 xcb_get_property_reply(xcb_connection(), get_cookie, NULL);
1650
1651             if (reply && reply->format == 32 && reply->type == wmStateAtom) {
1652                 const long *data = (const long *)xcb_get_property_value(reply);
1653                 if (reply->length != 0 && XCB_WM_STATE_ICONIC == data[0])
1654                     newState = Qt::WindowMinimized;
1655             }
1656             free(reply);
1657         } // WM_STATE: Quick check for 'Minimize'.
1658         if (newState != Qt::WindowMinimized) { // Something else changed, get _NET_WM_STATE.
1659             const NetWmStates states = netWmStates();
1660             if ((states & NetWmStateMaximizedHorz) && (states & NetWmStateMaximizedVert))
1661                 newState = Qt::WindowMaximized;
1662             else if (states & NetWmStateFullScreen)
1663                 newState = Qt::WindowFullScreen;
1664         }
1665         // Send Window state, compress events in case other flags (modality, etc) are changed.
1666         if (m_lastWindowStateEvent != newState) {
1667             QWindowSystemInterface::handleWindowStateChanged(window(), newState);
1668             m_lastWindowStateEvent = newState;
1669         }
1670     }
1671 }
1672
1673 void QXcbWindow::handleFocusInEvent(const xcb_focus_in_event_t *)
1674 {
1675     QWindowSystemInterface::handleWindowActivated(window());
1676 }
1677
1678 static bool focusInPeeker(xcb_generic_event_t *event)
1679 {
1680     if (!event) {
1681         // FocusIn event is not in the queue, proceed with FocusOut normally.
1682         QWindowSystemInterface::handleWindowActivated(0);
1683         return true;
1684     }
1685     uint response_type = event->response_type & ~0x80;
1686     return response_type == XCB_FOCUS_IN;
1687 }
1688
1689 void QXcbWindow::handleFocusOutEvent(const xcb_focus_out_event_t *)
1690 {
1691     // Do not set the active window to 0 if there is a FocusIn coming.
1692     // There is however no equivalent for XPutBackEvent so register a
1693     // callback for QXcbConnection instead.
1694     connection()->addPeekFunc(focusInPeeker);
1695 }
1696
1697 void QXcbWindow::updateSyncRequestCounter()
1698 {
1699     if (m_screen->syncRequestSupported() && (m_syncValue.lo != 0 || m_syncValue.hi != 0)) {
1700         Q_XCB_CALL(xcb_sync_set_counter(xcb_connection(), m_syncCounter, m_syncValue));
1701         xcb_flush(xcb_connection());
1702         connection()->sync();
1703
1704         m_syncValue.lo = 0;
1705         m_syncValue.hi = 0;
1706     }
1707 }
1708
1709 bool QXcbWindow::setKeyboardGrabEnabled(bool grab)
1710 {
1711     if (!grab) {
1712         xcb_ungrab_keyboard(xcb_connection(), XCB_TIME_CURRENT_TIME);
1713         return true;
1714     }
1715     xcb_grab_keyboard_cookie_t cookie = xcb_grab_keyboard(xcb_connection(), false,
1716                                                           m_window, XCB_TIME_CURRENT_TIME,
1717                                                           XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
1718     xcb_grab_keyboard_reply_t *reply = xcb_grab_keyboard_reply(xcb_connection(), cookie, NULL);
1719     bool result = !(!reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1720     free(reply);
1721     return result;
1722 }
1723
1724 bool QXcbWindow::setMouseGrabEnabled(bool grab)
1725 {
1726     if (!grab) {
1727         xcb_ungrab_pointer(xcb_connection(), XCB_TIME_CURRENT_TIME);
1728         return true;
1729     }
1730     xcb_grab_pointer_cookie_t cookie = xcb_grab_pointer(xcb_connection(), false, m_window,
1731                                                         (XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE
1732                                                          | XCB_EVENT_MASK_BUTTON_MOTION | XCB_EVENT_MASK_ENTER_WINDOW
1733                                                          | XCB_EVENT_MASK_LEAVE_WINDOW | XCB_EVENT_MASK_POINTER_MOTION),
1734                                                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC,
1735                                                         XCB_WINDOW_NONE, XCB_CURSOR_NONE,
1736                                                         XCB_TIME_CURRENT_TIME);
1737     xcb_grab_pointer_reply_t *reply = xcb_grab_pointer_reply(xcb_connection(), cookie, NULL);
1738     bool result = !(!reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1739     free(reply);
1740     return result;
1741 }
1742
1743 void QXcbWindow::setCursor(xcb_cursor_t cursor)
1744 {
1745     xcb_change_window_attributes(xcb_connection(), m_window, XCB_CW_CURSOR, &cursor);
1746     xcb_flush(xcb_connection());
1747 }
1748
1749 bool QXcbWindow::startSystemResize(const QPoint &pos, Qt::Corner corner)
1750 {
1751     const xcb_atom_t moveResize = connection()->atom(QXcbAtom::_NET_WM_MOVERESIZE);
1752     if (!connection()->wmSupport()->isSupportedByWM(moveResize))
1753         return false;
1754     xcb_client_message_event_t xev;
1755     xev.response_type = XCB_CLIENT_MESSAGE;
1756     xev.type = moveResize;
1757     xev.window = xcb_window();
1758     xev.format = 32;
1759     const QPoint globalPos = window()->mapToGlobal(pos);
1760     xev.data.data32[0] = globalPos.x();
1761     xev.data.data32[1] = globalPos.y();
1762     const bool bottom = corner == Qt::BottomRightCorner || corner == Qt::BottomLeftCorner;
1763     const bool left = corner == Qt::BottomLeftCorner || corner == Qt::TopLeftCorner;
1764     if (bottom)
1765         xev.data.data32[2] = left ? 6 : 4; // bottomleft/bottomright
1766     else
1767         xev.data.data32[2] = left ? 0 : 2; // topleft/topright
1768     xev.data.data32[3] = XCB_BUTTON_INDEX_1;
1769     xev.data.data32[4] = 0;
1770     xcb_ungrab_pointer(connection()->xcb_connection(), XCB_CURRENT_TIME);
1771     xcb_send_event(connection()->xcb_connection(), false, m_screen->root(),
1772                    XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY,
1773                    (const char *)&xev);
1774     return true;
1775 }
1776
1777 #if !defined(QT_NO_SHAPE)
1778
1779 static inline xcb_rectangle_t qRectToXCBRectangle(const QRect &r)
1780 {
1781     xcb_rectangle_t result;
1782     result.x = qMax(SHRT_MIN, r.x());
1783     result.y = qMax(SHRT_MIN, r.y());
1784     result.width = qMin((int)USHRT_MAX, r.width());
1785     result.height = qMin((int)USHRT_MAX, r.height());
1786     return result;
1787 }
1788
1789 void QXcbWindow::setOpacity(qreal level)
1790 {
1791     if (!m_window)
1792         return;
1793
1794     quint32 value = qRound64(qBound(qreal(0), level, qreal(1)) * 0xffffffff);
1795
1796     Q_XCB_CALL(xcb_change_property(xcb_connection(),
1797                                    XCB_PROP_MODE_REPLACE,
1798                                    m_window,
1799                                    atom(QXcbAtom::_NET_WM_WINDOW_OPACITY),
1800                                    XCB_ATOM_CARDINAL,
1801                                    32,
1802                                    1,
1803                                    (uchar *)&value));
1804 }
1805
1806 void QXcbWindow::setMask(const QRegion &region)
1807 {
1808     if (!connection()->hasXShape())
1809         return;
1810     if (region.isEmpty()) {
1811         xcb_shape_mask(connection()->xcb_connection(), XCB_SHAPE_SO_SET,
1812                        XCB_SHAPE_SK_BOUNDING, xcb_window(), 0, 0, XCB_NONE);
1813     } else {
1814         QVector<xcb_rectangle_t> rects;
1815         foreach (const QRect &r, region.rects())
1816             rects.push_back(qRectToXCBRectangle(r));
1817         xcb_shape_rectangles(connection()->xcb_connection(), XCB_SHAPE_SO_SET,
1818                              XCB_SHAPE_SK_BOUNDING, XCB_CLIP_ORDERING_UNSORTED,
1819                              xcb_window(), 0, 0, rects.size(), &rects[0]);
1820     }
1821 }
1822
1823 #endif // !QT_NO_SHAPE
1824
1825 QT_END_NAMESPACE