src/plugins/platforms/xcb/qxcbwindow.cpp

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  22 ** Alternatively, this file may be used under the terms of the GNU General
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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 "qxcbkeyboard.h"
  51 #include "qxcbwmsupport.h"
  52
  53 #include <qplatformintegration_qpa.h>
  54
  55 #ifdef XCB_USE_DRI2
  56 #include "qdri2context.h"
  57 #endif
  58
  59 // FIXME This workaround can be removed for xcb-icccm > 3.8
  60 #define class class_name
  61 #include <xcb/xcb_icccm.h>
  62 #undef class
  63 #include <xcb/xfixes.h>
  64
  65 // xcb-icccm 3.8 support
  66 #ifdef XCB_ICCCM_NUM_WM_SIZE_HINTS_ELEMENTS
  67 #define xcb_get_wm_hints_reply xcb_icccm_get_wm_hints_reply
  68 #define xcb_get_wm_hints xcb_icccm_get_wm_hints
  69 #define xcb_set_wm_hints xcb_icccm_set_wm_hints
  70 #define xcb_set_wm_normal_hints xcb_icccm_set_wm_normal_hints
  71 #define xcb_size_hints_set_base_size xcb_icccm_size_hints_set_base_size
  72 #define xcb_size_hints_set_max_size xcb_icccm_size_hints_set_max_size
  73 #define xcb_size_hints_set_min_size xcb_icccm_size_hints_set_min_size
  74 #define xcb_size_hints_set_position xcb_icccm_size_hints_set_position
  75 #define xcb_size_hints_set_resize_inc xcb_icccm_size_hints_set_resize_inc
  76 #define xcb_size_hints_set_size xcb_icccm_size_hints_set_size
  77 #define xcb_size_hints_set_win_gravity xcb_icccm_size_hints_set_win_gravity
  78 #define xcb_wm_hints_set_iconic xcb_icccm_wm_hints_set_iconic
  79 #define xcb_wm_hints_set_normal xcb_icccm_wm_hints_set_normal
  80 #define xcb_wm_hints_set_input xcb_icccm_wm_hints_set_input
  81 #define xcb_wm_hints_t xcb_icccm_wm_hints_t
  82 #define XCB_WM_STATE_ICONIC XCB_ICCCM_WM_STATE_ICONIC
  83 #define XCB_WM_STATE_WITHDRAWN XCB_ICCCM_WM_STATE_WITHDRAWN
  84 #endif
  85
  86 #include <private/qguiapplication_p.h>
  87 #include <private/qwindow_p.h>
  88
  89 #include <QtGui/QPlatformBackingStore>
  90 #include <QtGui/QWindowSystemInterface>
  91
  92 #include <stdio.h>
  93
  94 #ifdef XCB_USE_XLIB
  95 #include <X11/Xlib.h>
  96 #include <X11/Xutil.h>
  97 #endif
  98
  99 #ifdef XCB_USE_XINPUT2_MAEMO
 100 #include <X11/extensions/XInput2.h>
 101 #endif
 102
 103 #if defined(XCB_USE_GLX)
 104 #include "qglxintegration.h"
 105 #include <QtPlatformSupport/private/qglxconvenience_p.h>
 106 #elif defined(XCB_USE_EGL)
 107 #include "qxcbeglsurface.h"
 108 #include <QtPlatformSupport/private/qeglconvenience_p.h>
 109 #include <QtPlatformSupport/private/qxlibeglintegration_p.h>
 110 #endif
 111
 112 #define XCOORD_MAX 16383
 113
 114 //#ifdef NET_WM_STATE_DEBUG
 115
 116 QT_BEGIN_NAMESPACE
 117
 118 // Returns true if we should set WM_TRANSIENT_FOR on \a w
 119 static inline bool isTransient(const QWindow *w)
 120 {
 121     return w->windowType() == Qt::Dialog
 122            || w->windowType() == Qt::Sheet
 123            || w->windowType() == Qt::Tool
 124            || w->windowType() == Qt::SplashScreen
 125            || w->windowType() == Qt::ToolTip
 126            || w->windowType() == Qt::Drawer
 127            || w->windowType() == Qt::Popup;
 128 }
 129
 130 static inline QImage::Format imageFormatForDepth(int depth)
 131 {
 132     switch (depth) {
 133         case 32: return QImage::Format_ARGB32_Premultiplied;
 134         case 24: return QImage::Format_RGB32;
 135         case 16: return QImage::Format_RGB16;
 136         default: return QImage::Format_Invalid;
 137     }
 138 }
 139
 140 QXcbWindow::QXcbWindow(QWindow *window)
 141     : QPlatformWindow(window)
 142     , m_window(0)
 143     , m_syncCounter(0)
 144     , m_mapped(false)
 145     , m_transparent(false)
 146     , m_deferredActivation(false)
 147     , m_netWmUserTimeWindow(XCB_NONE)
 148 #if defined(XCB_USE_EGL)
 149     , m_eglSurface(0)
 150 #endif
 151 {
 152     m_screen = static_cast<QXcbScreen *>(window->screen()->handle());
 153
 154     setConnection(m_screen->connection());
 155
 156     create();
 157 }
 158
 159 void QXcbWindow::create()
 160 {
 161     destroy();
 162
 163     m_windowState = Qt::WindowNoState;
 164
 165     Qt::WindowType type = window()->windowType();
 166
 167     if (type == Qt::Desktop) {
 168         m_window = m_screen->root();
 169         m_depth = m_screen->screen()->root_depth;
 170         m_imageFormat = imageFormatForDepth(m_depth);
 171         connection()->addWindow(m_window, this);
 172         return;
 173     }
 174
 175     const quint32 mask = XCB_CW_BACK_PIXMAP | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_SAVE_UNDER | XCB_CW_EVENT_MASK;
 176     const quint32 values[] = {
 177         // XCB_CW_BACK_PIXMAP
 178         XCB_NONE,
 179         // XCB_CW_OVERRIDE_REDIRECT
 180         type == Qt::Popup || type == Qt::ToolTip,
 181         // XCB_CW_SAVE_UNDER
 182         type == Qt::Popup || type == Qt::Tool || type == Qt::SplashScreen || type == Qt::ToolTip || type == Qt::Drawer,
 183         // XCB_CW_EVENT_MASK
 184         XCB_EVENT_MASK_EXPOSURE
 185         | XCB_EVENT_MASK_STRUCTURE_NOTIFY
 186         | XCB_EVENT_MASK_KEY_PRESS
 187         | XCB_EVENT_MASK_KEY_RELEASE
 188         | XCB_EVENT_MASK_BUTTON_PRESS
 189         | XCB_EVENT_MASK_BUTTON_RELEASE
 190         | XCB_EVENT_MASK_BUTTON_MOTION
 191         | XCB_EVENT_MASK_ENTER_WINDOW
 192         | XCB_EVENT_MASK_LEAVE_WINDOW
 193         | XCB_EVENT_MASK_POINTER_MOTION
 194         | XCB_EVENT_MASK_PROPERTY_CHANGE
 195         | XCB_EVENT_MASK_FOCUS_CHANGE
 196     };
 197
 198     QRect rect = window()->geometry();
 199     QPlatformWindow::setGeometry(rect);
 200
 201     rect.setWidth(qBound(1, rect.width(), XCOORD_MAX));
 202     rect.setHeight(qBound(1, rect.height(), XCOORD_MAX));
 203
 204     xcb_window_t xcb_parent_id = m_screen->root();
 205     if (parent())
 206         xcb_parent_id = static_cast<QXcbWindow *>(parent())->xcb_window();
 207
 208     m_format = window()->requestedFormat();
 209
 210 #if (defined(XCB_USE_GLX) || defined(XCB_USE_EGL)) && defined(XCB_USE_XLIB)
 211     if (QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::OpenGL)
 212         || m_format.hasAlpha())
 213     {
 214 #if defined(XCB_USE_GLX)
 215         XVisualInfo *visualInfo = qglx_findVisualInfo(DISPLAY_FROM_XCB(m_screen), m_screen->screenNumber(), &m_format);
 216         if (!visualInfo)
 217             qFatal("Could not initialize GLX");
 218 #elif defined(XCB_USE_EGL)
 219         EGLDisplay eglDisplay = connection()->egl_display();
 220         EGLConfig eglConfig = q_configFromGLFormat(eglDisplay, m_format, true);
 221         m_format = q_glFormatFromConfig(eglDisplay, eglConfig);
 222
 223         VisualID id = QXlibEglIntegration::getCompatibleVisualId(DISPLAY_FROM_XCB(this), eglDisplay, eglConfig);
 224
 225         XVisualInfo visualInfoTemplate;
 226         memset(&visualInfoTemplate, 0, sizeof(XVisualInfo));
 227         visualInfoTemplate.visualid = id;
 228
 229         XVisualInfo *visualInfo;
 230         int matchingCount = 0;
 231         visualInfo = XGetVisualInfo(DISPLAY_FROM_XCB(this), VisualIDMask, &visualInfoTemplate, &matchingCount);
 232         if (!visualInfo)
 233             qFatal("Could not initialize EGL");
 234 #endif //XCB_USE_GLX
 235         m_depth = visualInfo->depth;
 236         m_imageFormat = imageFormatForDepth(m_depth);
 237         Colormap cmap = XCreateColormap(DISPLAY_FROM_XCB(this), xcb_parent_id, visualInfo->visual, AllocNone);
 238
 239         XSetWindowAttributes a;
 240         a.background_pixel = WhitePixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 241         a.border_pixel = BlackPixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 242         a.colormap = cmap;
 243
 244         m_visualId = visualInfo->visualid;
 245
 246         m_window = XCreateWindow(DISPLAY_FROM_XCB(this), xcb_parent_id, rect.x(), rect.y(), rect.width(), rect.height(),
 247                                   0, visualInfo->depth, InputOutput, visualInfo->visual,
 248                                   CWBackPixel|CWBorderPixel|CWColormap, &a);
 249
 250         XFree(visualInfo);
 251     } else
 252 #endif //defined(XCB_USE_GLX) || defined(XCB_USE_EGL)
 253     {
 254         m_window = xcb_generate_id(xcb_connection());
 255         m_depth = m_screen->screen()->root_depth;
 256         m_imageFormat = imageFormatForDepth(m_depth);
 257         m_visualId = m_screen->screen()->root_visual;
 258
 259         Q_XCB_CALL(xcb_create_window(xcb_connection(),
 260                                      XCB_COPY_FROM_PARENT,            // depth -- same as root
 261                                      m_window,                        // window id
 262                                      xcb_parent_id,                   // parent window id
 263                                      rect.x(),
 264                                      rect.y(),
 265                                      rect.width(),
 266                                      rect.height(),
 267                                      0,                               // border width
 268                                      XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
 269                                      m_visualId,                      // visual
 270                                      0,                               // value mask
 271                                      0));                             // value list
 272     }
 273
 274     connection()->addWindow(m_window, this);
 275
 276     Q_XCB_CALL(xcb_change_window_attributes(xcb_connection(), m_window, mask, values));
 277
 278     propagateSizeHints();
 279
 280     xcb_atom_t properties[4];
 281     int propertyCount = 0;
 282     properties[propertyCount++] = atom(QXcbAtom::WM_DELETE_WINDOW);
 283     properties[propertyCount++] = atom(QXcbAtom::WM_TAKE_FOCUS);
 284     properties[propertyCount++] = atom(QXcbAtom::_NET_WM_PING);
 285
 286     if (m_screen->syncRequestSupported())
 287         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_SYNC_REQUEST);
 288
 289     if (window()->windowFlags() & Qt::WindowContextHelpButtonHint)
 290         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_CONTEXT_HELP);
 291
 292     Q_XCB_CALL(xcb_change_property(xcb_connection(),
 293                                    XCB_PROP_MODE_REPLACE,
 294                                    m_window,
 295                                    atom(QXcbAtom::WM_PROTOCOLS),
 296                                    XCB_ATOM_ATOM,
 297                                    32,
 298                                    propertyCount,
 299                                    properties));
 300     m_syncValue.hi = 0;
 301     m_syncValue.lo = 0;
 302
 303     if (m_screen->syncRequestSupported()) {
 304         m_syncCounter = xcb_generate_id(xcb_connection());
 305         Q_XCB_CALL(xcb_sync_create_counter(xcb_connection(), m_syncCounter, m_syncValue));
 306
 307         Q_XCB_CALL(xcb_change_property(xcb_connection(),
 308                                        XCB_PROP_MODE_REPLACE,
 309                                        m_window,
 310                                        atom(QXcbAtom::_NET_WM_SYNC_REQUEST_COUNTER),
 311                                        XCB_ATOM_CARDINAL,
 312                                        32,
 313                                        1,
 314                                        &m_syncCounter));
 315     }
 316
 317     // set the PID to let the WM kill the application if unresponsive
 318     long pid = getpid();
 319     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 320                                    atom(QXcbAtom::_NET_WM_PID), XCB_ATOM_CARDINAL, 32,
 321                                    1, &pid));
 322
 323     xcb_wm_hints_t hints;
 324     memset(&hints, 0, sizeof(hints));
 325     xcb_wm_hints_set_normal(&hints);
 326
 327     xcb_wm_hints_set_input(&hints, !(window()->windowFlags() & Qt::WindowDoesNotAcceptFocus));
 328
 329     xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 330
 331     xcb_window_t leader = m_screen->clientLeader();
 332     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 333                                    atom(QXcbAtom::WM_CLIENT_LEADER), XCB_ATOM_WINDOW, 32,
 334                                    1, &leader));
 335
 336 #ifdef XCB_USE_XINPUT2_MAEMO
 337     if (connection()->isUsingXInput2()) {
 338         XIEventMask xieventmask;
 339         uchar bitmask[2] = { 0, 0 };
 340
 341         xieventmask.deviceid = XIAllMasterDevices;
 342         xieventmask.mask = bitmask;
 343         xieventmask.mask_len = sizeof(bitmask);
 344
 345         XISetMask(bitmask, XI_ButtonPress);
 346         XISetMask(bitmask, XI_ButtonRelease);
 347         XISetMask(bitmask, XI_Motion);
 348
 349         XISelectEvents(DISPLAY_FROM_XCB(this), m_window, &xieventmask, 1);
 350     }
 351 #endif
 352
 353     setWindowFlags(window()->windowFlags());
 354     setWindowTitle(window()->windowTitle());
 355     setWindowState(window()->windowState());
 356
 357     if (window()->windowFlags() & Qt::WindowTransparentForInput)
 358         setTransparentForMouseEvents(true);
 359
 360     connection()->drag()->dndEnable(this, true);
 361 }
 362
 363 QXcbWindow::~QXcbWindow()
 364 {
 365     destroy();
 366 }
 367
 368 void QXcbWindow::destroy()
 369 {
 370     if (m_syncCounter && m_screen->syncRequestSupported())
 371         Q_XCB_CALL(xcb_sync_destroy_counter(xcb_connection(), m_syncCounter));
 372     if (m_window) {
 373         if (m_netWmUserTimeWindow) {
 374             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
 375             // Some window managers, like metacity, do XSelectInput on the _NET_WM_USER_TIME_WINDOW window,
 376             // without trapping BadWindow (which crashes when the user time window is destroyed).
 377             connection()->sync();
 378             xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow);
 379             m_netWmUserTimeWindow = XCB_NONE;
 380         }
 381         connection()->removeWindow(m_window);
 382         Q_XCB_CALL(xcb_destroy_window(xcb_connection(), m_window));
 383     }
 384     m_mapped = false;
 385
 386 #if defined(XCB_USE_EGL)
 387     delete m_eglSurface;
 388     m_eglSurface = 0;
 389 #endif
 390 }
 391
 392 void QXcbWindow::setGeometry(const QRect &rect)
 393 {
 394     QPlatformWindow::setGeometry(rect);
 395
 396     propagateSizeHints();
 397
 398     const quint32 mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
 399     const qint32 values[] = {
 400         qBound<qint32>(-XCOORD_MAX, rect.x(),      XCOORD_MAX),
 401         qBound<qint32>(-XCOORD_MAX, rect.y(),      XCOORD_MAX),
 402         qBound<qint32>(1,           rect.width(),  XCOORD_MAX),
 403         qBound<qint32>(1,           rect.height(), XCOORD_MAX),
 404     };
 405
 406     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, reinterpret_cast<const quint32*>(values)));
 407
 408     xcb_flush(xcb_connection());
 409 }
 410
 411 QMargins QXcbWindow::frameMargins() const
 412 {
 413     if (m_dirtyFrameMargins) {
 414         xcb_window_t window = m_window;
 415         xcb_window_t parent = m_window;
 416
 417         bool foundRoot = false;
 418
 419         const QVector<xcb_window_t> &virtualRoots =
 420             connection()->wmSupport()->virtualRoots();
 421
 422         while (!foundRoot) {
 423             xcb_query_tree_cookie_t cookie = xcb_query_tree(xcb_connection(), parent);
 424
 425             xcb_generic_error_t *error;
 426             xcb_query_tree_reply_t *reply = xcb_query_tree_reply(xcb_connection(), cookie, &error);
 427             if (reply) {
 428                 if (reply->root == reply->parent || virtualRoots.indexOf(reply->parent) != -1) {
 429                     foundRoot = true;
 430                 } else {
 431                     window = parent;
 432                     parent = reply->parent;
 433                 }
 434
 435                 free(reply);
 436             } else {
 437                 if (error) {
 438                     connection()->handleXcbError(error);
 439                     free(error);
 440                 }
 441
 442                 m_dirtyFrameMargins = false;
 443                 m_frameMargins = QMargins();
 444                 return m_frameMargins;
 445             }
 446         }
 447
 448         QPoint offset;
 449
 450         xcb_generic_error_t *error;
 451         xcb_translate_coordinates_reply_t *reply =
 452             xcb_translate_coordinates_reply(
 453                 xcb_connection(),
 454                 xcb_translate_coordinates(xcb_connection(), window, parent, 0, 0),
 455                 &error);
 456
 457         if (reply) {
 458             offset = QPoint(reply->dst_x, reply->dst_y);
 459             free(reply);
 460         } else if (error) {
 461             free(error);
 462         }
 463
 464         xcb_get_geometry_reply_t *geom =
 465             xcb_get_geometry_reply(
 466                 xcb_connection(),
 467                 xcb_get_geometry(xcb_connection(), parent),
 468                 &error);
 469
 470         if (geom) {
 471             // --
 472             // add the border_width for the window managers frame... some window managers
 473             // do not use a border_width of zero for their frames, and if we the left and
 474             // top strut, we ensure that pos() is absolutely correct.  frameGeometry()
 475             // will still be incorrect though... perhaps i should have foffset as well, to
 476             // indicate the frame offset (equal to the border_width on X).
 477             // - Brad
 478             // -- copied from qwidget_x11.cpp
 479
 480             int left = offset.x() + geom->border_width;
 481             int top = offset.y() + geom->border_width;
 482             int right = geom->width + geom->border_width - geometry().width() - offset.x();
 483             int bottom = geom->height + geom->border_width - geometry().height() - offset.y();
 484
 485             m_frameMargins = QMargins(left, top, right, bottom);
 486
 487             free(geom);
 488         } else if (error) {
 489             free(error);
 490         }
 491
 492         m_dirtyFrameMargins = false;
 493     }
 494
 495     return m_frameMargins;
 496 }
 497
 498 void QXcbWindow::setVisible(bool visible)
 499 {
 500     if (visible)
 501         show();
 502     else
 503         hide();
 504 }
 505
 506 void QXcbWindow::show()
 507 {
 508     if (window()->isTopLevel()) {
 509         xcb_get_property_cookie_t cookie = xcb_get_wm_hints(xcb_connection(), m_window);
 510
 511         xcb_generic_error_t *error;
 512
 513         xcb_wm_hints_t hints;
 514         xcb_get_wm_hints_reply(xcb_connection(), cookie, &hints, &error);
 515
 516         if (error) {
 517             connection()->handleXcbError(error);
 518             free(error);
 519         }
 520
 521         if (window()->windowState() & Qt::WindowMinimized)
 522             xcb_wm_hints_set_iconic(&hints);
 523         else
 524             xcb_wm_hints_set_normal(&hints);
 525
 526         xcb_wm_hints_set_input(&hints, !(window()->windowFlags() & Qt::WindowDoesNotAcceptFocus));
 527
 528         xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 529
 530         // update WM_NORMAL_HINTS
 531         propagateSizeHints();
 532
 533         // update WM_TRANSIENT_FOR
 534         if (window()->transientParent() && isTransient(window())) {
 535             QXcbWindow *transientXcbParent = static_cast<QXcbWindow *>(window()->transientParent()->handle());
 536             if (transientXcbParent) {
 537                 // ICCCM 4.1.2.6
 538                 xcb_window_t parentWindow = transientXcbParent->xcb_window();
 539
 540                 // todo: set transient for group (wm_client_leader) if no parent, a la qwidget_x11.cpp
 541                 Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 542                                                XCB_ATOM_WM_TRANSIENT_FOR, XCB_ATOM_WINDOW, 32,
 543                                                1, &parentWindow));
 544             }
 545         }
 546
 547         // update _MOTIF_WM_HINTS
 548         updateMotifWmHintsBeforeMap();
 549
 550         // update _NET_WM_STATE
 551         updateNetWmStateBeforeMap();
 552     }
 553
 554     if (connection()->time() != XCB_TIME_CURRENT_TIME)
 555         updateNetWmUserTime(connection()->time());
 556
 557     Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 558     xcb_flush(xcb_connection());
 559
 560     connection()->sync();
 561 }
 562
 563 void QXcbWindow::hide()
 564 {
 565     Q_XCB_CALL(xcb_unmap_window(xcb_connection(), m_window));
 566
 567     // send synthetic UnmapNotify event according to icccm 4.1.4
 568     xcb_unmap_notify_event_t event;
 569     event.response_type = XCB_UNMAP_NOTIFY;
 570     event.event = m_screen->root();
 571     event.window = m_window;
 572     event.from_configure = false;
 573     Q_XCB_CALL(xcb_send_event(xcb_connection(), false, m_screen->root(),
 574                               XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event));
 575
 576     xcb_flush(xcb_connection());
 577
 578     m_mapped = false;
 579 }
 580
 581 struct QtMotifWmHints {
 582     quint32 flags, functions, decorations;
 583     qint32 input_mode;
 584     quint32 status;
 585 };
 586
 587 enum {
 588     MWM_HINTS_FUNCTIONS   = (1L << 0),
 589
 590     MWM_FUNC_ALL      = (1L << 0),
 591     MWM_FUNC_RESIZE   = (1L << 1),
 592     MWM_FUNC_MOVE     = (1L << 2),
 593     MWM_FUNC_MINIMIZE = (1L << 3),
 594     MWM_FUNC_MAXIMIZE = (1L << 4),
 595     MWM_FUNC_CLOSE    = (1L << 5),
 596
 597     MWM_HINTS_DECORATIONS = (1L << 1),
 598
 599     MWM_DECOR_ALL      = (1L << 0),
 600     MWM_DECOR_BORDER   = (1L << 1),
 601     MWM_DECOR_RESIZEH  = (1L << 2),
 602     MWM_DECOR_TITLE    = (1L << 3),
 603     MWM_DECOR_MENU     = (1L << 4),
 604     MWM_DECOR_MINIMIZE = (1L << 5),
 605     MWM_DECOR_MAXIMIZE = (1L << 6),
 606
 607     MWM_HINTS_INPUT_MODE = (1L << 2),
 608
 609     MWM_INPUT_MODELESS                  = 0L,
 610     MWM_INPUT_PRIMARY_APPLICATION_MODAL = 1L,
 611     MWM_INPUT_FULL_APPLICATION_MODAL    = 3L
 612 };
 613
 614 static QtMotifWmHints getMotifWmHints(QXcbConnection *c, xcb_window_t window)
 615 {
 616     QtMotifWmHints hints;
 617
 618     xcb_get_property_cookie_t get_cookie =
 619         xcb_get_property(c->xcb_connection(), 0, window, c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 620                          c->atom(QXcbAtom::_MOTIF_WM_HINTS), 0, 20);
 621
 622     xcb_generic_error_t *error;
 623
 624     xcb_get_property_reply_t *reply =
 625         xcb_get_property_reply(c->xcb_connection(), get_cookie, &error);
 626
 627     if (reply && reply->format == 32 && reply->type == c->atom(QXcbAtom::_MOTIF_WM_HINTS)) {
 628         hints = *((QtMotifWmHints *)xcb_get_property_value(reply));
 629     } else if (error) {
 630         c->handleXcbError(error);
 631         free(error);
 632
 633         hints.flags = 0L;
 634         hints.functions = MWM_FUNC_ALL;
 635         hints.decorations = MWM_DECOR_ALL;
 636         hints.input_mode = 0L;
 637         hints.status = 0L;
 638     }
 639
 640     free(reply);
 641
 642     return hints;
 643 }
 644
 645 static void setMotifWmHints(QXcbConnection *c, xcb_window_t window, const QtMotifWmHints &hints)
 646 {
 647     if (hints.flags != 0l) {
 648         Q_XCB_CALL2(xcb_change_property(c->xcb_connection(),
 649                                        XCB_PROP_MODE_REPLACE,
 650                                        window,
 651                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 652                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 653                                        32,
 654                                        5,
 655                                        &hints), c);
 656     } else {
 657         Q_XCB_CALL2(xcb_delete_property(c->xcb_connection(), window, c->atom(QXcbAtom::_MOTIF_WM_HINTS)), c);
 658     }
 659 }
 660
 661 void QXcbWindow::printNetWmState(const QVector<xcb_atom_t> &state)
 662 {
 663     printf("_NET_WM_STATE (%d): ", state.size());
 664     for (int i = 0; i < state.size(); ++i) {
 665 #define CHECK_WM_STATE(state_atom) \
 666         if (state.at(i) == atom(QXcbAtom::state_atom))\
 667             printf(#state_atom " ");
 668         CHECK_WM_STATE(_NET_WM_STATE_ABOVE)
 669         CHECK_WM_STATE(_NET_WM_STATE_BELOW)
 670         CHECK_WM_STATE(_NET_WM_STATE_FULLSCREEN)
 671         CHECK_WM_STATE(_NET_WM_STATE_MAXIMIZED_HORZ)
 672         CHECK_WM_STATE(_NET_WM_STATE_MAXIMIZED_VERT)
 673         CHECK_WM_STATE(_NET_WM_STATE_MODAL)
 674         CHECK_WM_STATE(_NET_WM_STATE_STAYS_ON_TOP)
 675         CHECK_WM_STATE(_NET_WM_STATE_DEMANDS_ATTENTION)
 676 #undef CHECK_WM_STATE
 677     }
 678     printf("\n");
 679 }
 680
 681 QVector<xcb_atom_t> QXcbWindow::getNetWmState()
 682 {
 683     QVector<xcb_atom_t> result;
 684
 685     xcb_get_property_cookie_t get_cookie =
 686         xcb_get_property(xcb_connection(), 0, m_window, atom(QXcbAtom::_NET_WM_STATE),
 687                          XCB_ATOM_ATOM, 0, 1024);
 688
 689     xcb_generic_error_t *error;
 690
 691     xcb_get_property_reply_t *reply =
 692         xcb_get_property_reply(xcb_connection(), get_cookie, &error);
 693
 694     if (reply && reply->format == 32 && reply->type == XCB_ATOM_ATOM) {
 695         result.resize(reply->length);
 696
 697         memcpy(result.data(), xcb_get_property_value(reply), reply->length * sizeof(xcb_atom_t));
 698
 699 #ifdef NET_WM_STATE_DEBUG
 700         printf("getting net wm state (%x)\n", m_window);
 701         printNetWmState(result);
 702 #endif
 703
 704         free(reply);
 705     } else if (error) {
 706         connection()->handleXcbError(error);
 707         free(error);
 708     } else {
 709 #ifdef NET_WM_STATE_DEBUG
 710         printf("getting net wm state (%x), empty\n", m_window);
 711 #endif
 712     }
 713
 714     return result;
 715 }
 716
 717 void QXcbWindow::setNetWmState(const QVector<xcb_atom_t> &atoms)
 718 {
 719     if (atoms.isEmpty()) {
 720         Q_XCB_CALL(xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_STATE)));
 721     } else {
 722         Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 723                                        atom(QXcbAtom::_NET_WM_STATE), XCB_ATOM_ATOM, 32,
 724                                        atoms.count(), atoms.constData()));
 725     }
 726     xcb_flush(xcb_connection());
 727 }
 728
 729
 730 Qt::WindowFlags QXcbWindow::setWindowFlags(Qt::WindowFlags flags)
 731 {
 732     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 733
 734     if (type == Qt::ToolTip)
 735         flags |= Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint;
 736     if (type == Qt::Popup)
 737         flags |= Qt::X11BypassWindowManagerHint;
 738
 739     if (flags & Qt::WindowTransparentForInput) {
 740         uint32_t mask = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_VISIBILITY_CHANGE
 741                  | XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_RESIZE_REDIRECT
 742                 | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT
 743                 | XCB_EVENT_MASK_FOCUS_CHANGE  | XCB_EVENT_MASK_PROPERTY_CHANGE
 744                 | XCB_EVENT_MASK_COLOR_MAP_CHANGE | XCB_EVENT_MASK_OWNER_GRAB_BUTTON;
 745         xcb_change_window_attributes(xcb_connection(), xcb_window(), XCB_CW_EVENT_MASK, &mask);
 746     }
 747
 748     setNetWmWindowFlags(flags);
 749     setMotifWindowFlags(flags);
 750
 751     setTransparentForMouseEvents(flags & Qt::WindowTransparentForInput);
 752     updateDoesNotAcceptFocus(flags & Qt::WindowDoesNotAcceptFocus);
 753
 754     return flags;
 755 }
 756
 757 void QXcbWindow::setMotifWindowFlags(Qt::WindowFlags flags)
 758 {
 759     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 760
 761     QtMotifWmHints mwmhints;
 762     mwmhints.flags = 0L;
 763     mwmhints.functions = 0L;
 764     mwmhints.decorations = 0;
 765     mwmhints.input_mode = 0L;
 766     mwmhints.status = 0L;
 767
 768     if (type != Qt::SplashScreen) {
 769         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 770
 771         bool customize = flags & Qt::CustomizeWindowHint;
 772         if (!(flags & Qt::FramelessWindowHint) && !(customize && !(flags & Qt::WindowTitleHint))) {
 773             mwmhints.decorations |= MWM_DECOR_BORDER;
 774             mwmhints.decorations |= MWM_DECOR_RESIZEH;
 775
 776             if (flags & Qt::WindowTitleHint)
 777                 mwmhints.decorations |= MWM_DECOR_TITLE;
 778
 779             if (flags & Qt::WindowSystemMenuHint)
 780                 mwmhints.decorations |= MWM_DECOR_MENU;
 781
 782             if (flags & Qt::WindowMinimizeButtonHint) {
 783                 mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 784                 mwmhints.functions |= MWM_FUNC_MINIMIZE;
 785             }
 786
 787             if (flags & Qt::WindowMaximizeButtonHint) {
 788                 mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 789                 mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 790             }
 791
 792             if (flags & Qt::WindowCloseButtonHint)
 793                 mwmhints.functions |= MWM_FUNC_CLOSE;
 794         }
 795     } else {
 796         // if type == Qt::SplashScreen
 797         mwmhints.decorations = MWM_DECOR_ALL;
 798     }
 799
 800     if (mwmhints.functions != 0) {
 801         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 802         mwmhints.functions |= MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 803     } else {
 804         mwmhints.functions = MWM_FUNC_ALL;
 805     }
 806
 807     if (!(flags & Qt::FramelessWindowHint)
 808         && flags & Qt::CustomizeWindowHint
 809         && flags & Qt::WindowTitleHint
 810         && !(flags &
 811              (Qt::WindowMinimizeButtonHint
 812               | Qt::WindowMaximizeButtonHint
 813               | Qt::WindowCloseButtonHint)))
 814     {
 815         // a special case - only the titlebar without any button
 816         mwmhints.flags = MWM_HINTS_FUNCTIONS;
 817         mwmhints.functions = MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 818         mwmhints.decorations = 0;
 819     }
 820
 821     setMotifWmHints(connection(), m_window, mwmhints);
 822 }
 823
 824 void QXcbWindow::changeNetWmState(bool set, xcb_atom_t one, xcb_atom_t two)
 825 {
 826     xcb_client_message_event_t event;
 827
 828     event.response_type = XCB_CLIENT_MESSAGE;
 829     event.format = 32;
 830     event.window = m_window;
 831     event.type = atom(QXcbAtom::_NET_WM_STATE);
 832     event.data.data32[0] = set ? 1 : 0;
 833     event.data.data32[1] = one;
 834     event.data.data32[2] = two;
 835     event.data.data32[3] = 0;
 836     event.data.data32[4] = 0;
 837
 838     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));
 839 }
 840
 841 Qt::WindowState QXcbWindow::setWindowState(Qt::WindowState state)
 842 {
 843     if (state == m_windowState)
 844         return state;
 845
 846     // unset old state
 847     switch (m_windowState) {
 848     case Qt::WindowMinimized:
 849         Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 850         break;
 851     case Qt::WindowMaximized:
 852         changeNetWmState(false,
 853                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 854                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 855         break;
 856     case Qt::WindowFullScreen:
 857         changeNetWmState(false, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 858         break;
 859     default:
 860         break;
 861     }
 862
 863     // set new state
 864     switch (state) {
 865     case Qt::WindowMinimized:
 866         {
 867             xcb_client_message_event_t event;
 868
 869             event.response_type = XCB_CLIENT_MESSAGE;
 870             event.format = 32;
 871             event.window = m_window;
 872             event.type = atom(QXcbAtom::WM_CHANGE_STATE);
 873             event.data.data32[0] = XCB_WM_STATE_ICONIC;
 874             event.data.data32[1] = 0;
 875             event.data.data32[2] = 0;
 876             event.data.data32[3] = 0;
 877             event.data.data32[4] = 0;
 878
 879             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));
 880         }
 881         break;
 882     case Qt::WindowMaximized:
 883         changeNetWmState(true,
 884                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 885                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 886         break;
 887     case Qt::WindowFullScreen:
 888         changeNetWmState(true, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 889         break;
 890     case Qt::WindowNoState:
 891         break;
 892     default:
 893         break;
 894     }
 895
 896     connection()->sync();
 897
 898     m_windowState = state;
 899     return m_windowState;
 900 }
 901
 902 void QXcbWindow::setNetWmWindowFlags(Qt::WindowFlags flags)
 903 {
 904     // in order of decreasing priority
 905     QVector<uint> windowTypes;
 906
 907     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 908
 909     switch (type) {
 910     case Qt::Dialog:
 911     case Qt::Sheet:
 912         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DIALOG));
 913         break;
 914     case Qt::Tool:
 915     case Qt::Drawer:
 916         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_UTILITY));
 917         break;
 918     case Qt::ToolTip:
 919         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_TOOLTIP));
 920         break;
 921     case Qt::SplashScreen:
 922         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_SPLASH));
 923         break;
 924     default:
 925         break;
 926     }
 927
 928     if (flags & Qt::FramelessWindowHint)
 929         windowTypes.append(atom(QXcbAtom::_KDE_NET_WM_WINDOW_TYPE_OVERRIDE));
 930
 931     windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_NORMAL));
 932
 933     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 934                                    atom(QXcbAtom::_NET_WM_WINDOW_TYPE), XCB_ATOM_ATOM, 32,
 935                                    windowTypes.count(), windowTypes.constData()));
 936 }
 937
 938 void QXcbWindow::updateMotifWmHintsBeforeMap()
 939 {
 940     QtMotifWmHints mwmhints = getMotifWmHints(connection(), m_window);
 941
 942     if (window()->windowModality() != Qt::NonModal) {
 943         switch (window()->windowModality()) {
 944         case Qt::WindowModal:
 945             mwmhints.input_mode = MWM_INPUT_PRIMARY_APPLICATION_MODAL;
 946             break;
 947         case Qt::ApplicationModal:
 948         default:
 949             mwmhints.input_mode = MWM_INPUT_FULL_APPLICATION_MODAL;
 950             break;
 951         }
 952         mwmhints.flags |= MWM_HINTS_INPUT_MODE;
 953     } else {
 954         mwmhints.input_mode = MWM_INPUT_MODELESS;
 955         mwmhints.flags &= ~MWM_HINTS_INPUT_MODE;
 956     }
 957
 958     if (window()->minimumSize() == window()->maximumSize()) {
 959         // fixed size, remove the resize handle (since mwm/dtwm
 960         // isn't smart enough to do it itself)
 961         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 962         if (mwmhints.functions == MWM_FUNC_ALL) {
 963             mwmhints.functions = MWM_FUNC_MOVE;
 964         } else {
 965             mwmhints.functions &= ~MWM_FUNC_RESIZE;
 966         }
 967
 968         if (mwmhints.decorations == MWM_DECOR_ALL) {
 969             mwmhints.flags |= MWM_HINTS_DECORATIONS;
 970             mwmhints.decorations = (MWM_DECOR_BORDER
 971                                     | MWM_DECOR_TITLE
 972                                     | MWM_DECOR_MENU);
 973         } else {
 974             mwmhints.decorations &= ~MWM_DECOR_RESIZEH;
 975         }
 976     }
 977
 978     if (window()->windowFlags() & Qt::WindowMinimizeButtonHint) {
 979         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 980         mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 981         mwmhints.functions |= MWM_FUNC_MINIMIZE;
 982     }
 983     if (window()->windowFlags() & Qt::WindowMaximizeButtonHint) {
 984         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 985         mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 986         mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 987     }
 988     if (window()->windowFlags() & Qt::WindowCloseButtonHint)
 989         mwmhints.functions |= MWM_FUNC_CLOSE;
 990
 991     setMotifWmHints(connection(), m_window, mwmhints);
 992 }
 993
 994 void QXcbWindow::updateNetWmStateBeforeMap()
 995 {
 996     QVector<xcb_atom_t> netWmState;
 997
 998     Qt::WindowFlags flags = window()->windowFlags();
 999     if (flags & Qt::WindowStaysOnTopHint) {
1000         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_ABOVE));
1001         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP));
1002     } else if (flags & Qt::WindowStaysOnBottomHint) {
1003         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_BELOW));
1004     }
1005
1006     if (window()->windowState() & Qt::WindowFullScreen) {
1007         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
1008     }
1009
1010     if (window()->windowState() & Qt::WindowMaximized) {
1011         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ));
1012         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
1013     }
1014
1015     if (window()->windowModality() != Qt::NonModal) {
1016         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_MODAL));
1017     }
1018
1019     setNetWmState(netWmState);
1020 }
1021
1022 void QXcbWindow::updateNetWmUserTime(xcb_timestamp_t timestamp)
1023 {
1024     xcb_window_t wid = m_window;
1025
1026     const bool isSupportedByWM = connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
1027     if (m_netWmUserTimeWindow || isSupportedByWM) {
1028         if (!m_netWmUserTimeWindow) {
1029             m_netWmUserTimeWindow = xcb_generate_id(xcb_connection());
1030             Q_XCB_CALL(xcb_create_window(xcb_connection(),
1031                                          XCB_COPY_FROM_PARENT,            // depth -- same as root
1032                                          m_netWmUserTimeWindow,                        // window id
1033                                          m_window,                   // parent window id
1034                                          -1, -1, 1, 1,
1035                                          0,                               // border width
1036                                          XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
1037                                          m_visualId,                      // visual
1038                                          0,                               // value mask
1039                                          0));                             // value list
1040             wid = m_netWmUserTimeWindow;
1041             xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW),
1042                                 XCB_ATOM_WINDOW, 32, 1, &m_netWmUserTimeWindow);
1043             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME));
1044         } else if (!isSupportedByWM) {
1045             // WM no longer supports it, then we should remove the
1046             // _NET_WM_USER_TIME_WINDOW atom.
1047             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
1048             xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow);
1049             m_netWmUserTimeWindow = XCB_NONE;
1050         } else {
1051             wid = m_netWmUserTimeWindow;
1052         }
1053     }
1054     xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, wid, atom(QXcbAtom::_NET_WM_USER_TIME),
1055                         XCB_ATOM_CARDINAL, 32, 1, &timestamp);
1056 }
1057
1058 void QXcbWindow::setTransparentForMouseEvents(bool transparent)
1059 {
1060     if (transparent == m_transparent)
1061         return;
1062
1063     xcb_rectangle_t rectangle;
1064
1065     xcb_rectangle_t *rect = 0;
1066     int nrect = 0;
1067
1068     if (!transparent) {
1069         rectangle.x = 0;
1070         rectangle.y = 0;
1071         rectangle.width = geometry().width();
1072         rectangle.height = geometry().height();
1073         rect = &rectangle;
1074         nrect = 1;
1075     }
1076
1077     xcb_xfixes_region_t region = xcb_generate_id(xcb_connection());
1078     xcb_xfixes_create_region(xcb_connection(), region, nrect, rect);
1079     xcb_xfixes_set_window_shape_region_checked(xcb_connection(), m_window, XCB_SHAPE_SK_INPUT, 0, 0, region);
1080     xcb_xfixes_destroy_region(xcb_connection(), region);
1081
1082     m_transparent = transparent;
1083 }
1084
1085 void QXcbWindow::updateDoesNotAcceptFocus(bool doesNotAcceptFocus)
1086 {
1087     xcb_get_property_cookie_t cookie = xcb_get_wm_hints(xcb_connection(), m_window);
1088
1089     xcb_generic_error_t *error;
1090
1091     xcb_wm_hints_t hints;
1092     xcb_get_wm_hints_reply(xcb_connection(), cookie, &hints, &error);
1093
1094     if (error) {
1095         connection()->handleXcbError(error);
1096         free(error);
1097         return;
1098     }
1099
1100     xcb_wm_hints_set_input(&hints, !doesNotAcceptFocus);
1101     xcb_set_wm_hints(xcb_connection(), m_window, &hints);
1102 }
1103
1104 WId QXcbWindow::winId() const
1105 {
1106     return m_window;
1107 }
1108
1109 void QXcbWindow::setParent(const QPlatformWindow *parent)
1110 {
1111     // re-create for compatibility
1112     create();
1113
1114     QPoint topLeft = geometry().topLeft();
1115
1116     xcb_window_t xcb_parent_id = parent ? static_cast<const QXcbWindow *>(parent)->xcb_window() : m_screen->root();
1117     Q_XCB_CALL(xcb_reparent_window(xcb_connection(), xcb_window(), xcb_parent_id, topLeft.x(), topLeft.y()));
1118 }
1119
1120 void QXcbWindow::setWindowTitle(const QString &title)
1121 {
1122     QByteArray ba = title.toUtf8();
1123     Q_XCB_CALL(xcb_change_property(xcb_connection(),
1124                                    XCB_PROP_MODE_REPLACE,
1125                                    m_window,
1126                                    atom(QXcbAtom::_NET_WM_NAME),
1127                                    atom(QXcbAtom::UTF8_STRING),
1128                                    8,
1129                                    ba.length(),
1130                                    ba.constData()));
1131 }
1132
1133 void QXcbWindow::raise()
1134 {
1135     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
1136     const quint32 values[] = { XCB_STACK_MODE_ABOVE };
1137     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
1138 }
1139
1140 void QXcbWindow::lower()
1141 {
1142     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
1143     const quint32 values[] = { XCB_STACK_MODE_BELOW };
1144     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
1145 }
1146
1147 void QXcbWindow::propagateSizeHints()
1148 {
1149     // update WM_NORMAL_HINTS
1150     xcb_size_hints_t hints;
1151     memset(&hints, 0, sizeof(hints));
1152
1153     QRect rect = geometry();
1154
1155     QWindow *win = window();
1156
1157     xcb_size_hints_set_position(&hints, true, rect.x(), rect.y());
1158     xcb_size_hints_set_size(&hints, true, rect.width(), rect.height());
1159     xcb_size_hints_set_win_gravity(&hints, qt_window_private(win)->positionPolicy == QWindowPrivate::WindowFrameInclusive
1160                                            ? XCB_GRAVITY_NORTH_WEST : XCB_GRAVITY_STATIC);
1161
1162     QSize minimumSize = win->minimumSize();
1163     QSize maximumSize = win->maximumSize();
1164     QSize baseSize = win->baseSize();
1165     QSize sizeIncrement = win->sizeIncrement();
1166
1167     if (minimumSize.width() > 0 || minimumSize.height() > 0)
1168         xcb_size_hints_set_min_size(&hints, minimumSize.width(), minimumSize.height());
1169
1170     if (maximumSize.width() < QWINDOWSIZE_MAX || maximumSize.height() < QWINDOWSIZE_MAX)
1171         xcb_size_hints_set_max_size(&hints,
1172                                     qMin(XCOORD_MAX, maximumSize.width()),
1173                                     qMin(XCOORD_MAX, maximumSize.height()));
1174
1175     if (sizeIncrement.width() > 0 || sizeIncrement.height() > 0) {
1176         xcb_size_hints_set_base_size(&hints, baseSize.width(), baseSize.height());
1177         xcb_size_hints_set_resize_inc(&hints, sizeIncrement.width(), sizeIncrement.height());
1178     }
1179
1180     xcb_set_wm_normal_hints(xcb_connection(), m_window, &hints);
1181 }
1182
1183 void QXcbWindow::requestActivateWindow()
1184 {
1185     if (!m_mapped) {
1186         m_deferredActivation = true;
1187         return;
1188     }
1189     m_deferredActivation = false;
1190
1191     updateNetWmUserTime(connection()->time());
1192
1193     if (window()->isTopLevel()
1194         && connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_ACTIVE_WINDOW))) {
1195         xcb_client_message_event_t event;
1196
1197         event.response_type = XCB_CLIENT_MESSAGE;
1198         event.format = 32;
1199         event.window = m_window;
1200         event.type = atom(QXcbAtom::_NET_ACTIVE_WINDOW);
1201         event.data.data32[0] = 1;
1202         event.data.data32[1] = connection()->time();
1203         QWindow *focusWindow = QGuiApplication::focusWindow();
1204         event.data.data32[2] = focusWindow ? focusWindow->winId() : XCB_NONE;
1205         event.data.data32[3] = 0;
1206         event.data.data32[4] = 0;
1207
1208         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));
1209     } else {
1210         Q_XCB_CALL(xcb_set_input_focus(xcb_connection(), XCB_INPUT_FOCUS_PARENT, m_window, connection()->time()));
1211     }
1212
1213     connection()->sync();
1214 }
1215
1216 #if XCB_USE_MAEMO_WINDOW_PROPERTIES
1217 void QXcbWindow::setOrientation(Qt::ScreenOrientation orientation)
1218 {
1219     int angle = 0;
1220     switch (orientation) {
1221         case Qt::PortraitOrientation: angle = 270; break;
1222         case Qt::LandscapeOrientation: angle = 0; break;
1223         case Qt::InvertedPortraitOrientation: angle = 90; break;
1224         case Qt::InvertedLandscapeOrientation: angle = 180; break;
1225         case Qt::PrimaryOrientation: break;
1226     }
1227     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
1228                                    atom(QXcbAtom::MeegoTouchOrientationAngle), XCB_ATOM_CARDINAL, 32,
1229                                    1, &angle));
1230 }
1231 #endif
1232
1233 QSurfaceFormat QXcbWindow::format() const
1234 {
1235     // ### return actual format
1236     return m_format;
1237 }
1238
1239 #if defined(XCB_USE_EGL)
1240 QXcbEGLSurface *QXcbWindow::eglSurface() const
1241 {
1242     if (!m_eglSurface) {
1243         EGLDisplay display = connection()->egl_display();
1244         EGLConfig config = q_configFromGLFormat(display, window()->requestedFormat(), true);
1245         EGLSurface surface = eglCreateWindowSurface(display, config, (EGLNativeWindowType)m_window, 0);
1246
1247         m_eglSurface = new QXcbEGLSurface(display, surface);
1248     }
1249
1250     return m_eglSurface;
1251 }
1252 #endif
1253
1254 void QXcbWindow::handleExposeEvent(const xcb_expose_event_t *event)
1255 {
1256     QRect rect(event->x, event->y, event->width, event->height);
1257
1258     if (m_exposeRegion.isEmpty())
1259         m_exposeRegion = rect;
1260     else
1261         m_exposeRegion |= rect;
1262
1263     // if count is non-zero there are more expose events pending
1264     if (event->count == 0) {
1265         QWindowSystemInterface::handleSynchronousExposeEvent(window(), m_exposeRegion);
1266         m_exposeRegion = QRegion();
1267     }
1268 }
1269
1270 void QXcbWindow::handleClientMessageEvent(const xcb_client_message_event_t *event)
1271 {
1272     if (event->format != 32)
1273         return;
1274
1275     if (event->type == atom(QXcbAtom::WM_PROTOCOLS)) {
1276         if (event->data.data32[0] == atom(QXcbAtom::WM_DELETE_WINDOW)) {
1277             QWindowSystemInterface::handleCloseEvent(window());
1278         } else if (event->data.data32[0] == atom(QXcbAtom::WM_TAKE_FOCUS)) {
1279             connection()->setTime(event->data.data32[1]);
1280         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_PING)) {
1281             xcb_client_message_event_t reply = *event;
1282
1283             reply.response_type = XCB_CLIENT_MESSAGE;
1284             reply.window = m_screen->root();
1285
1286             xcb_send_event(xcb_connection(), 0, m_screen->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&reply);
1287             xcb_flush(xcb_connection());
1288         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_SYNC_REQUEST)) {
1289             connection()->setTime(event->data.data32[1]);
1290             m_syncValue.lo = event->data.data32[2];
1291             m_syncValue.hi = event->data.data32[3];
1292         } else {
1293             qWarning() << "QXcbWindow: Unhandled WM_PROTOCOLS message:" << connection()->atomName(event->data.data32[0]);
1294         }
1295     } else if (event->type == atom(QXcbAtom::XdndEnter)) {
1296         connection()->drag()->handleEnter(window(), event);
1297     } else if (event->type == atom(QXcbAtom::XdndPosition)) {
1298         connection()->drag()->handlePosition(window(), event);
1299     } else if (event->type == atom(QXcbAtom::XdndLeave)) {
1300         connection()->drag()->handleLeave(window(), event);
1301     } else if (event->type == atom(QXcbAtom::XdndDrop)) {
1302         connection()->drag()->handleDrop(window(), event);
1303     } else if (event->type == atom(QXcbAtom::_XEMBED)) { // QSystemTrayIcon
1304     } else {
1305         qWarning() << "QXcbWindow: Unhandled client message:" << connection()->atomName(event->type);
1306     }
1307 }
1308
1309 void QXcbWindow::handleConfigureNotifyEvent(const xcb_configure_notify_event_t *event)
1310 {
1311     bool fromSendEvent = (event->response_type & 0x80);
1312     QPoint pos(event->x, event->y);
1313     if (!parent() && !fromSendEvent) {
1314         // Do not trust the position, query it instead.
1315         xcb_translate_coordinates_cookie_t cookie = xcb_translate_coordinates(xcb_connection(), xcb_window(),
1316                                                                               m_screen->root(), 0, 0);
1317         xcb_generic_error_t *error;
1318         xcb_translate_coordinates_reply_t *reply = xcb_translate_coordinates_reply(xcb_connection(), cookie, &error);
1319         if (reply) {
1320             pos.setX(reply->dst_x);
1321             pos.setY(reply->dst_y);
1322             free(reply);
1323         } else if (error) {
1324             free(error);
1325         }
1326     }
1327
1328     QRect rect(pos, QSize(event->width, event->height));
1329
1330     QPlatformWindow::setGeometry(rect);
1331     QWindowSystemInterface::handleGeometryChange(window(), rect);
1332
1333     m_dirtyFrameMargins = true;
1334
1335 #if XCB_USE_DRI2
1336     if (m_context)
1337         static_cast<QDri2Context *>(m_context)->resize(rect.size());
1338 #endif
1339 }
1340
1341 void QXcbWindow::handleMapNotifyEvent(const xcb_map_notify_event_t *event)
1342 {
1343     if (event->window == m_window) {
1344         m_mapped = true;
1345         if (m_deferredActivation)
1346             requestActivateWindow();
1347         QWindowSystemInterface::handleMapEvent(window());
1348     }
1349 }
1350
1351 void QXcbWindow::handleUnmapNotifyEvent(const xcb_unmap_notify_event_t *event)
1352 {
1353     if (event->window == m_window) {
1354         m_mapped = false;
1355         QWindowSystemInterface::handleUnmapEvent(window());
1356     }
1357 }
1358
1359 static Qt::MouseButtons translateMouseButtons(int s)
1360 {
1361     Qt::MouseButtons ret = 0;
1362     if (s & XCB_BUTTON_MASK_1)
1363         ret |= Qt::LeftButton;
1364     if (s & XCB_BUTTON_MASK_2)
1365         ret |= Qt::MidButton;
1366     if (s & XCB_BUTTON_MASK_3)
1367         ret |= Qt::RightButton;
1368     return ret;
1369 }
1370
1371 static Qt::MouseButton translateMouseButton(xcb_button_t s)
1372 {
1373     switch (s) {
1374     case 1: return Qt::LeftButton;
1375     case 2: return Qt::MidButton;
1376     case 3: return Qt::RightButton;
1377     // Button values 4-7 were already handled as Wheel events, and won't occur here.
1378     case 8: return Qt::BackButton;      // Also known as Qt::ExtraButton1
1379     case 9: return Qt::ForwardButton;   // Also known as Qt::ExtraButton2
1380     case 10: return Qt::ExtraButton3;
1381     case 11: return Qt::ExtraButton4;
1382     case 12: return Qt::ExtraButton5;
1383     case 13: return Qt::ExtraButton6;
1384     case 14: return Qt::ExtraButton7;
1385     case 15: return Qt::ExtraButton8;
1386     case 16: return Qt::ExtraButton9;
1387     case 17: return Qt::ExtraButton10;
1388     case 18: return Qt::ExtraButton11;
1389     case 19: return Qt::ExtraButton12;
1390     case 20: return Qt::ExtraButton13;
1391     case 21: return Qt::ExtraButton14;
1392     case 22: return Qt::ExtraButton15;
1393     case 23: return Qt::ExtraButton16;
1394     case 24: return Qt::ExtraButton17;
1395     case 25: return Qt::ExtraButton18;
1396     case 26: return Qt::ExtraButton19;
1397     case 27: return Qt::ExtraButton20;
1398     case 28: return Qt::ExtraButton21;
1399     case 29: return Qt::ExtraButton22;
1400     case 30: return Qt::ExtraButton23;
1401     case 31: return Qt::ExtraButton24;
1402     default: return Qt::NoButton;
1403     }
1404 }
1405
1406 void QXcbWindow::handleButtonPressEvent(const xcb_button_press_event_t *event)
1407 {
1408     updateNetWmUserTime(event->time);
1409
1410     QPoint local(event->event_x, event->event_y);
1411     QPoint global(event->root_x, event->root_y);
1412
1413     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1414
1415     if (event->detail >= 4 && event->detail <= 7) {
1416         // Logic borrowed from qapplication_x11.cpp
1417         int delta = 120 * ((event->detail == 4 || event->detail == 6) ? 1 : -1);
1418         bool hor = (((event->detail == 4 || event->detail == 5)
1419                      && (modifiers & Qt::AltModifier))
1420                     || (event->detail == 6 || event->detail == 7));
1421
1422         QWindowSystemInterface::handleWheelEvent(window(), event->time,
1423                                                  local, global, delta, hor ? Qt::Horizontal : Qt::Vertical, modifiers);
1424         return;
1425     }
1426
1427     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1428 }
1429
1430 void QXcbWindow::handleButtonReleaseEvent(const xcb_button_release_event_t *event)
1431 {
1432     QPoint local(event->event_x, event->event_y);
1433     QPoint global(event->root_x, event->root_y);
1434     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1435
1436     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1437 }
1438
1439 void QXcbWindow::handleMotionNotifyEvent(const xcb_motion_notify_event_t *event)
1440 {
1441     QPoint local(event->event_x, event->event_y);
1442     QPoint global(event->root_x, event->root_y);
1443     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1444
1445     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1446 }
1447
1448 void QXcbWindow::handleMouseEvent(xcb_button_t detail, uint16_t state, xcb_timestamp_t time, const QPoint &local, const QPoint &global, Qt::KeyboardModifiers modifiers)
1449 {
1450     connection()->setTime(time);
1451
1452     Qt::MouseButtons buttons = translateMouseButtons(state);
1453     Qt::MouseButton button = translateMouseButton(detail);
1454
1455     buttons ^= button; // X event uses state *before*, Qt uses state *after*
1456
1457     QWindowSystemInterface::handleMouseEvent(window(), time, local, global, buttons, modifiers);
1458 }
1459
1460 void QXcbWindow::handleEnterNotifyEvent(const xcb_enter_notify_event_t *event)
1461 {
1462     connection()->setTime(event->time);
1463
1464     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1465         || event->detail == XCB_NOTIFY_DETAIL_VIRTUAL
1466         || event->detail == XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL)
1467     {
1468         return;
1469     }
1470
1471     QWindowSystemInterface::handleEnterEvent(window());
1472 }
1473
1474 void QXcbWindow::handleLeaveNotifyEvent(const xcb_leave_notify_event_t *event)
1475 {
1476     connection()->setTime(event->time);
1477
1478     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1479         || event->detail == XCB_NOTIFY_DETAIL_INFERIOR)
1480     {
1481         return;
1482     }
1483
1484     QWindowSystemInterface::handleLeaveEvent(window());
1485 }
1486
1487 void QXcbWindow::handlePropertyNotifyEvent(const xcb_property_notify_event_t *event)
1488 {
1489     connection()->setTime(event->time);
1490
1491     bool propertyDeleted = event->state == XCB_PROPERTY_DELETE;
1492
1493     if (event->atom == atom(QXcbAtom::_NET_WM_STATE) || event->atom == atom(QXcbAtom::WM_STATE)) {
1494         if (propertyDeleted)
1495             return;
1496
1497         xcb_get_property_cookie_t get_cookie =
1498             xcb_get_property(xcb_connection(), 0, m_window, atom(QXcbAtom::WM_STATE),
1499                              XCB_ATOM_ANY, 0, 1024);
1500
1501         xcb_generic_error_t *error;
1502
1503         xcb_get_property_reply_t *reply =
1504             xcb_get_property_reply(xcb_connection(), get_cookie, &error);
1505
1506         xcb_atom_t wm_state = XCB_WM_STATE_WITHDRAWN;
1507         if (reply && reply->format == 32 && reply->type == atom(QXcbAtom::WM_STATE)) {
1508             if (reply->length != 0)
1509                 wm_state = ((long *)xcb_get_property_value(reply))[0];
1510             free(reply);
1511         } else if (error) {
1512             connection()->handleXcbError(error);
1513             free(error);
1514         }
1515
1516         QVector<xcb_atom_t> netWmState = getNetWmState();
1517
1518         bool maximized = netWmState.contains(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ))
1519             && netWmState.contains(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
1520         bool fullscreen = netWmState.contains(atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
1521
1522         Qt::WindowState state = Qt::WindowNoState;
1523         if (wm_state == XCB_WM_STATE_ICONIC)
1524             state = Qt::WindowMinimized;
1525         else if (maximized)
1526             state = Qt::WindowMaximized;
1527         else if (fullscreen)
1528             state = Qt::WindowFullScreen;
1529
1530         QWindowSystemInterface::handleWindowStateChanged(window(), state);
1531     }
1532 }
1533
1534 void QXcbWindow::handleFocusInEvent(const xcb_focus_in_event_t *)
1535 {
1536     QWindowSystemInterface::handleWindowActivated(window());
1537 }
1538
1539 static bool focusInPeeker(xcb_generic_event_t *event)
1540 {
1541     if (!event) {
1542         // FocusIn event is not in the queue, proceed with FocusOut normally.
1543         QWindowSystemInterface::handleWindowActivated(0);
1544         return true;
1545     }
1546     uint response_type = event->response_type & ~0x80;
1547     return response_type == XCB_FOCUS_IN;
1548 }
1549
1550 void QXcbWindow::handleFocusOutEvent(const xcb_focus_out_event_t *)
1551 {
1552     // Do not set the active window to 0 if there is a FocusIn coming.
1553     // There is however no equivalent for XPutBackEvent so register a
1554     // callback for QXcbConnection instead.
1555     connection()->addPeekFunc(focusInPeeker);
1556 }
1557
1558 void QXcbWindow::updateSyncRequestCounter()
1559 {
1560     if (m_screen->syncRequestSupported() && (m_syncValue.lo != 0 || m_syncValue.hi != 0)) {
1561         Q_XCB_CALL(xcb_sync_set_counter(xcb_connection(), m_syncCounter, m_syncValue));
1562         xcb_flush(xcb_connection());
1563         connection()->sync();
1564
1565         m_syncValue.lo = 0;
1566         m_syncValue.hi = 0;
1567     }
1568 }
1569
1570 bool QXcbWindow::setKeyboardGrabEnabled(bool grab)
1571 {
1572     if (!grab) {
1573         xcb_ungrab_keyboard(xcb_connection(), XCB_TIME_CURRENT_TIME);
1574         return true;
1575     }
1576     xcb_grab_keyboard_cookie_t cookie = xcb_grab_keyboard(xcb_connection(), false,
1577                                                           m_window, XCB_TIME_CURRENT_TIME,
1578                                                           XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
1579     xcb_generic_error_t *err;
1580     xcb_grab_keyboard_reply_t *reply = xcb_grab_keyboard_reply(xcb_connection(), cookie, &err);
1581     bool result = !(err || !reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1582     free(reply);
1583     free(err);
1584     return result;
1585 }
1586
1587 bool QXcbWindow::setMouseGrabEnabled(bool grab)
1588 {
1589     if (!grab) {
1590         xcb_ungrab_pointer(xcb_connection(), XCB_TIME_CURRENT_TIME);
1591         return true;
1592     }
1593     xcb_grab_pointer_cookie_t cookie = xcb_grab_pointer(xcb_connection(), false, m_window,
1594                                                         (XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE
1595                                                          | XCB_EVENT_MASK_BUTTON_MOTION | XCB_EVENT_MASK_ENTER_WINDOW
1596                                                          | XCB_EVENT_MASK_LEAVE_WINDOW | XCB_EVENT_MASK_POINTER_MOTION),
1597                                                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC,
1598                                                         XCB_WINDOW_NONE, XCB_CURSOR_NONE,
1599                                                         XCB_TIME_CURRENT_TIME);
1600     xcb_generic_error_t *err;
1601     xcb_grab_pointer_reply_t *reply = xcb_grab_pointer_reply(xcb_connection(), cookie, &err);
1602     bool result = !(err || !reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1603     free(reply);
1604     free(err);
1605     return result;
1606 }
1607
1608 void QXcbWindow::setCursor(xcb_cursor_t cursor)
1609 {
1610     xcb_change_window_attributes(xcb_connection(), m_window, XCB_CW_CURSOR, &cursor);
1611     xcb_flush(xcb_connection());
1612 }
1613
1614 QT_END_NAMESPACE