src/plugins/platforms/xcb/qxcbwindow.cpp

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  41
  42 #include "qxcbwindow.h"
  43
  44 #include <QtDebug>
  45 #include <QScreen>
  46
  47 #include "qxcbconnection.h"
  48 #include "qxcbscreen.h"
  49 #include "qxcbdrag.h"
  50 #include "qxcbwmsupport.h"
  51
  52 #ifdef XCB_USE_DRI2
  53 #include "qdri2context.h"
  54 #endif
  55
  56 // FIXME This workaround can be removed for xcb-icccm > 3.8
  57 #define class class_name
  58 #include <xcb/xcb_icccm.h>
  59 #undef class
  60 #include <xcb/xfixes.h>
  61
  62 // xcb-icccm 3.8 support
  63 #ifdef XCB_ICCCM_NUM_WM_SIZE_HINTS_ELEMENTS
  64 #define xcb_get_wm_hints_reply xcb_icccm_get_wm_hints_reply
  65 #define xcb_get_wm_hints xcb_icccm_get_wm_hints
  66 #define xcb_set_wm_hints xcb_icccm_set_wm_hints
  67 #define xcb_set_wm_normal_hints xcb_icccm_set_wm_normal_hints
  68 #define xcb_size_hints_set_base_size xcb_icccm_size_hints_set_base_size
  69 #define xcb_size_hints_set_max_size xcb_icccm_size_hints_set_max_size
  70 #define xcb_size_hints_set_min_size xcb_icccm_size_hints_set_min_size
  71 #define xcb_size_hints_set_position xcb_icccm_size_hints_set_position
  72 #define xcb_size_hints_set_resize_inc xcb_icccm_size_hints_set_resize_inc
  73 #define xcb_size_hints_set_size xcb_icccm_size_hints_set_size
  74 #define xcb_size_hints_set_win_gravity xcb_icccm_size_hints_set_win_gravity
  75 #define xcb_wm_hints_set_iconic xcb_icccm_wm_hints_set_iconic
  76 #define xcb_wm_hints_set_normal xcb_icccm_wm_hints_set_normal
  77 #define xcb_wm_hints_t xcb_icccm_wm_hints_t
  78 #define XCB_WM_STATE_ICONIC XCB_ICCCM_WM_STATE_ICONIC
  79 #endif
  80
  81 #include <private/qguiapplication_p.h>
  82 #include <private/qwindow_p.h>
  83
  84 #include <QtGui/QPlatformBackingStore>
  85 #include <QtGui/QWindowSystemInterface>
  86
  87 #include <stdio.h>
  88
  89 #ifdef XCB_USE_XLIB
  90 #include <X11/Xlib.h>
  91 #include <X11/Xutil.h>
  92 #endif
  93
  94 #if defined(XCB_USE_GLX)
  95 #include "qglxintegration.h"
  96 #include <QtPlatformSupport/private/qglxconvenience_p.h>
  97 #elif defined(XCB_USE_EGL)
  98 #include "qxcbeglsurface.h"
  99 #include <QtPlatformSupport/private/qeglconvenience_p.h>
 100 #include <QtPlatformSupport/private/qxlibeglintegration_p.h>
 101 #endif
 102
 103 #define XCOORD_MAX 16383
 104
 105 //#ifdef NET_WM_STATE_DEBUG
 106
 107 QT_BEGIN_NAMESPACE
 108
 109 // Returns true if we should set WM_TRANSIENT_FOR on \a w
 110 static inline bool isTransient(const QWindow *w)
 111 {
 112     return w->windowType() == Qt::Dialog
 113            || w->windowType() == Qt::Sheet
 114            || w->windowType() == Qt::Tool
 115            || w->windowType() == Qt::SplashScreen
 116            || w->windowType() == Qt::ToolTip
 117            || w->windowType() == Qt::Drawer
 118            || w->windowType() == Qt::Popup;
 119 }
 120
 121 QXcbWindow::QXcbWindow(QWindow *window)
 122     : QPlatformWindow(window)
 123     , m_window(0)
 124     , m_syncCounter(0)
 125     , m_mapped(false)
 126     , m_transparent(false)
 127     , m_netWmUserTimeWindow(XCB_NONE)
 128 #if defined(XCB_USE_EGL)
 129     , m_eglSurface(0)
 130 #endif
 131 {
 132     m_screen = static_cast<QXcbScreen *>(window->screen()->handle());
 133
 134     setConnection(m_screen->connection());
 135
 136     create();
 137 }
 138
 139 void QXcbWindow::create()
 140 {
 141     destroy();
 142
 143     m_windowState = Qt::WindowNoState;
 144
 145     Qt::WindowType type = window()->windowType();
 146
 147     if (type == Qt::Desktop) {
 148         m_window = m_screen->root();
 149         m_depth = m_screen->screen()->root_depth;
 150         m_imageFormat = (m_depth == 32) ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32;
 151         connection()->addWindow(m_window, this);
 152         return;
 153     }
 154
 155     const quint32 mask = XCB_CW_BACK_PIXMAP | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_SAVE_UNDER | XCB_CW_EVENT_MASK;
 156     const quint32 values[] = {
 157         // XCB_CW_BACK_PIXMAP
 158         XCB_NONE,
 159         // XCB_CW_OVERRIDE_REDIRECT
 160         type == Qt::Popup || type == Qt::ToolTip,
 161         // XCB_CW_SAVE_UNDER
 162         type == Qt::Popup || type == Qt::Tool || type == Qt::SplashScreen || type == Qt::ToolTip || type == Qt::Drawer,
 163         // XCB_CW_EVENT_MASK
 164         XCB_EVENT_MASK_EXPOSURE
 165         | XCB_EVENT_MASK_STRUCTURE_NOTIFY
 166         | XCB_EVENT_MASK_KEY_PRESS
 167         | XCB_EVENT_MASK_KEY_RELEASE
 168         | XCB_EVENT_MASK_BUTTON_PRESS
 169         | XCB_EVENT_MASK_BUTTON_RELEASE
 170         | XCB_EVENT_MASK_BUTTON_MOTION
 171         | XCB_EVENT_MASK_ENTER_WINDOW
 172         | XCB_EVENT_MASK_LEAVE_WINDOW
 173         | XCB_EVENT_MASK_POINTER_MOTION
 174         | XCB_EVENT_MASK_PROPERTY_CHANGE
 175         | XCB_EVENT_MASK_FOCUS_CHANGE
 176     };
 177
 178     QRect rect = window()->geometry();
 179     QPlatformWindow::setGeometry(rect);
 180
 181     rect.setWidth(qBound(1, rect.width(), XCOORD_MAX));
 182     rect.setHeight(qBound(1, rect.height(), XCOORD_MAX));
 183
 184     xcb_window_t xcb_parent_id = m_screen->root();
 185     if (parent())
 186         xcb_parent_id = static_cast<QXcbWindow *>(parent())->xcb_window();
 187
 188     m_requestedFormat = window()->format();
 189
 190 #if (defined(XCB_USE_GLX) || defined(XCB_USE_EGL)) && defined(XCB_USE_XLIB)
 191     if (QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::OpenGL)
 192         || window()->format().hasAlpha())
 193     {
 194 #if defined(XCB_USE_GLX)
 195         XVisualInfo *visualInfo = qglx_findVisualInfo(DISPLAY_FROM_XCB(m_screen),m_screen->screenNumber(), window()->format());
 196
 197 #elif defined(XCB_USE_EGL)
 198         EGLDisplay eglDisplay = connection()->egl_display();
 199         EGLConfig eglConfig = q_configFromGLFormat(eglDisplay, window()->format(), true);
 200         VisualID id = QXlibEglIntegration::getCompatibleVisualId(DISPLAY_FROM_XCB(this), eglDisplay, eglConfig);
 201
 202         XVisualInfo visualInfoTemplate;
 203         memset(&visualInfoTemplate, 0, sizeof(XVisualInfo));
 204         visualInfoTemplate.visualid = id;
 205
 206         XVisualInfo *visualInfo;
 207         int matchingCount = 0;
 208         visualInfo = XGetVisualInfo(DISPLAY_FROM_XCB(this), VisualIDMask, &visualInfoTemplate, &matchingCount);
 209 #endif //XCB_USE_GLX
 210         if (visualInfo) {
 211             m_depth = visualInfo->depth;
 212             m_imageFormat = (m_depth == 32) ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32;
 213             Colormap cmap = XCreateColormap(DISPLAY_FROM_XCB(this), xcb_parent_id, visualInfo->visual, AllocNone);
 214
 215             XSetWindowAttributes a;
 216             a.background_pixel = WhitePixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 217             a.border_pixel = BlackPixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 218             a.colormap = cmap;
 219             m_window = XCreateWindow(DISPLAY_FROM_XCB(this), xcb_parent_id, rect.x(), rect.y(), rect.width(), rect.height(),
 220                                       0, visualInfo->depth, InputOutput, visualInfo->visual,
 221                                       CWBackPixel|CWBorderPixel|CWColormap, &a);
 222         } else {
 223             qFatal("no window!");
 224         }
 225     } else
 226 #endif //defined(XCB_USE_GLX) || defined(XCB_USE_EGL)
 227     {
 228         m_window = xcb_generate_id(xcb_connection());
 229         m_depth = m_screen->screen()->root_depth;
 230         m_imageFormat = (m_depth == 32) ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32;
 231
 232         Q_XCB_CALL(xcb_create_window(xcb_connection(),
 233                                      XCB_COPY_FROM_PARENT,            // depth -- same as root
 234                                      m_window,                        // window id
 235                                      xcb_parent_id,                   // parent window id
 236                                      rect.x(),
 237                                      rect.y(),
 238                                      rect.width(),
 239                                      rect.height(),
 240                                      0,                               // border width
 241                                      XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
 242                                      m_screen->screen()->root_visual, // visual
 243                                      0,                               // value mask
 244                                      0));                             // value list
 245     }
 246
 247     connection()->addWindow(m_window, this);
 248
 249     Q_XCB_CALL(xcb_change_window_attributes(xcb_connection(), m_window, mask, values));
 250
 251     propagateSizeHints();
 252
 253     xcb_atom_t properties[4];
 254     int propertyCount = 0;
 255     properties[propertyCount++] = atom(QXcbAtom::WM_DELETE_WINDOW);
 256     properties[propertyCount++] = atom(QXcbAtom::WM_TAKE_FOCUS);
 257     properties[propertyCount++] = atom(QXcbAtom::_NET_WM_PING);
 258
 259     if (m_screen->syncRequestSupported())
 260         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_SYNC_REQUEST);
 261
 262     if (window()->windowFlags() & Qt::WindowContextHelpButtonHint)
 263         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_CONTEXT_HELP);
 264
 265     Q_XCB_CALL(xcb_change_property(xcb_connection(),
 266                                    XCB_PROP_MODE_REPLACE,
 267                                    m_window,
 268                                    atom(QXcbAtom::WM_PROTOCOLS),
 269                                    XCB_ATOM_ATOM,
 270                                    32,
 271                                    propertyCount,
 272                                    properties));
 273     m_syncValue.hi = 0;
 274     m_syncValue.lo = 0;
 275
 276     if (m_screen->syncRequestSupported()) {
 277         m_syncCounter = xcb_generate_id(xcb_connection());
 278         Q_XCB_CALL(xcb_sync_create_counter(xcb_connection(), m_syncCounter, m_syncValue));
 279
 280         Q_XCB_CALL(xcb_change_property(xcb_connection(),
 281                                        XCB_PROP_MODE_REPLACE,
 282                                        m_window,
 283                                        atom(QXcbAtom::_NET_WM_SYNC_REQUEST_COUNTER),
 284                                        XCB_ATOM_CARDINAL,
 285                                        32,
 286                                        1,
 287                                        &m_syncCounter));
 288     }
 289
 290     // set the PID to let the WM kill the application if unresponsive
 291     long pid = getpid();
 292     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 293                                    atom(QXcbAtom::_NET_WM_PID), XCB_ATOM_CARDINAL, 32,
 294                                    1, &pid));
 295
 296     xcb_wm_hints_t hints;
 297     memset(&hints, 0, sizeof(hints));
 298     xcb_wm_hints_set_normal(&hints);
 299
 300     xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 301
 302     xcb_window_t leader = m_screen->clientLeader();
 303     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 304                                    atom(QXcbAtom::WM_CLIENT_LEADER), XCB_ATOM_WINDOW, 32,
 305                                    1, &leader));
 306
 307     setWindowFlags(window()->windowFlags());
 308     setWindowTitle(window()->windowTitle());
 309     setWindowState(window()->windowState());
 310
 311     if (window()->windowFlags() & Qt::WindowTransparentForInput)
 312         setTransparentForMouseEvents(true);
 313
 314     connection()->drag()->dndEnable(this, true);
 315 }
 316
 317 QXcbWindow::~QXcbWindow()
 318 {
 319     destroy();
 320 }
 321
 322 void QXcbWindow::destroy()
 323 {
 324     if (m_syncCounter && m_screen->syncRequestSupported())
 325         Q_XCB_CALL(xcb_sync_destroy_counter(xcb_connection(), m_syncCounter));
 326     if (m_window) {
 327         connection()->removeWindow(m_window);
 328         Q_XCB_CALL(xcb_destroy_window(xcb_connection(), m_window));
 329     }
 330     m_mapped = false;
 331
 332 #if defined(XCB_USE_EGL)
 333     delete m_eglSurface;
 334     m_eglSurface = 0;
 335 #endif
 336 }
 337
 338 void QXcbWindow::setGeometry(const QRect &rect)
 339 {
 340     QPlatformWindow::setGeometry(rect);
 341
 342     propagateSizeHints();
 343
 344     const quint32 mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
 345     const quint32 values[] = { rect.x(),
 346                                rect.y(),
 347                                qBound(1, rect.width(), XCOORD_MAX),
 348                                qBound(1, rect.height(), XCOORD_MAX) };
 349
 350     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
 351
 352     xcb_flush(xcb_connection());
 353 }
 354
 355 QMargins QXcbWindow::frameMargins() const
 356 {
 357     if (m_dirtyFrameMargins) {
 358         xcb_window_t window = m_window;
 359         xcb_window_t parent = m_window;
 360
 361         bool foundRoot = false;
 362
 363         const QVector<xcb_window_t> &virtualRoots =
 364             connection()->wmSupport()->virtualRoots();
 365
 366         while (!foundRoot) {
 367             xcb_query_tree_cookie_t cookie = xcb_query_tree(xcb_connection(), parent);
 368
 369             xcb_generic_error_t *error;
 370             xcb_query_tree_reply_t *reply = xcb_query_tree_reply(xcb_connection(), cookie, &error);
 371             if (reply) {
 372                 if (reply->root == reply->parent || virtualRoots.indexOf(reply->parent) != -1) {
 373                     foundRoot = true;
 374                 } else {
 375                     window = parent;
 376                     parent = reply->parent;
 377                 }
 378
 379                 free(reply);
 380             } else {
 381                 if (error) {
 382                     connection()->handleXcbError(error);
 383                     free(error);
 384                 }
 385
 386                 m_dirtyFrameMargins = false;
 387                 m_frameMargins = QMargins();
 388                 return m_frameMargins;
 389             }
 390         }
 391
 392         QPoint offset;
 393
 394         xcb_generic_error_t *error;
 395         xcb_translate_coordinates_reply_t *reply =
 396             xcb_translate_coordinates_reply(
 397                 xcb_connection(),
 398                 xcb_translate_coordinates(xcb_connection(), window, parent, 0, 0),
 399                 &error);
 400
 401         if (reply) {
 402             offset = QPoint(reply->dst_x, reply->dst_y);
 403             free(reply);
 404         } else if (error) {
 405             free(error);
 406         }
 407
 408         xcb_get_geometry_reply_t *geom =
 409             xcb_get_geometry_reply(
 410                 xcb_connection(),
 411                 xcb_get_geometry(xcb_connection(), parent),
 412                 &error);
 413
 414         if (geom) {
 415             // --
 416             // add the border_width for the window managers frame... some window managers
 417             // do not use a border_width of zero for their frames, and if we the left and
 418             // top strut, we ensure that pos() is absolutely correct.  frameGeometry()
 419             // will still be incorrect though... perhaps i should have foffset as well, to
 420             // indicate the frame offset (equal to the border_width on X).
 421             // - Brad
 422             // -- copied from qwidget_x11.cpp
 423
 424             int left = offset.x() + geom->border_width;
 425             int top = offset.y() + geom->border_width;
 426             int right = geom->width + geom->border_width - geometry().width() - offset.x();
 427             int bottom = geom->height + geom->border_width - geometry().height() - offset.y();
 428
 429             m_frameMargins = QMargins(left, top, right, bottom);
 430
 431             free(geom);
 432         } else if (error) {
 433             free(error);
 434         }
 435
 436         m_dirtyFrameMargins = false;
 437     }
 438
 439     return m_frameMargins;
 440 }
 441
 442 void QXcbWindow::setVisible(bool visible)
 443 {
 444     if (visible)
 445         show();
 446     else
 447         hide();
 448 }
 449
 450 void QXcbWindow::show()
 451 {
 452     if (window()->isTopLevel()) {
 453         xcb_get_property_cookie_t cookie = xcb_get_wm_hints(xcb_connection(), m_window);
 454
 455         xcb_generic_error_t *error;
 456
 457         xcb_wm_hints_t hints;
 458         xcb_get_wm_hints_reply(xcb_connection(), cookie, &hints, &error);
 459
 460         if (error) {
 461             connection()->handleXcbError(error);
 462             free(error);
 463         }
 464
 465         if (window()->windowState() & Qt::WindowMinimized)
 466             xcb_wm_hints_set_iconic(&hints);
 467         else
 468             xcb_wm_hints_set_normal(&hints);
 469
 470         xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 471
 472         // update WM_NORMAL_HINTS
 473         propagateSizeHints();
 474
 475         // update WM_TRANSIENT_FOR
 476         if (window()->transientParent() && isTransient(window())) {
 477             QXcbWindow *transientXcbParent = static_cast<QXcbWindow *>(window()->transientParent()->handle());
 478             if (transientXcbParent) {
 479                 // ICCCM 4.1.2.6
 480                 xcb_window_t parentWindow = transientXcbParent->xcb_window();
 481
 482                 // todo: set transient for group (wm_client_leader) if no parent, a la qwidget_x11.cpp
 483                 Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 484                                                XCB_ATOM_WM_TRANSIENT_FOR, XCB_ATOM_WINDOW, 32,
 485                                                1, &parentWindow));
 486             }
 487         }
 488
 489         // update _MOTIF_WM_HINTS
 490         updateMotifWmHintsBeforeMap();
 491
 492         // update _NET_WM_STATE
 493         updateNetWmStateBeforeMap();
 494     }
 495
 496     Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 497     xcb_flush(xcb_connection());
 498
 499     connection()->sync();
 500 }
 501
 502 void QXcbWindow::hide()
 503 {
 504     Q_XCB_CALL(xcb_unmap_window(xcb_connection(), m_window));
 505
 506     // send synthetic UnmapNotify event according to icccm 4.1.4
 507     xcb_unmap_notify_event_t event;
 508     event.response_type = XCB_UNMAP_NOTIFY;
 509     event.event = m_screen->root();
 510     event.window = m_window;
 511     event.from_configure = false;
 512     Q_XCB_CALL(xcb_send_event(xcb_connection(), false, m_screen->root(),
 513                               XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event));
 514
 515     xcb_flush(xcb_connection());
 516
 517     m_mapped = false;
 518 }
 519
 520 struct QtMotifWmHints {
 521     quint32 flags, functions, decorations;
 522     qint32 input_mode;
 523     quint32 status;
 524 };
 525
 526 enum {
 527     MWM_HINTS_FUNCTIONS   = (1L << 0),
 528
 529     MWM_FUNC_ALL      = (1L << 0),
 530     MWM_FUNC_RESIZE   = (1L << 1),
 531     MWM_FUNC_MOVE     = (1L << 2),
 532     MWM_FUNC_MINIMIZE = (1L << 3),
 533     MWM_FUNC_MAXIMIZE = (1L << 4),
 534     MWM_FUNC_CLOSE    = (1L << 5),
 535
 536     MWM_HINTS_DECORATIONS = (1L << 1),
 537
 538     MWM_DECOR_ALL      = (1L << 0),
 539     MWM_DECOR_BORDER   = (1L << 1),
 540     MWM_DECOR_RESIZEH  = (1L << 2),
 541     MWM_DECOR_TITLE    = (1L << 3),
 542     MWM_DECOR_MENU     = (1L << 4),
 543     MWM_DECOR_MINIMIZE = (1L << 5),
 544     MWM_DECOR_MAXIMIZE = (1L << 6),
 545
 546     MWM_HINTS_INPUT_MODE = (1L << 2),
 547
 548     MWM_INPUT_MODELESS                  = 0L,
 549     MWM_INPUT_PRIMARY_APPLICATION_MODAL = 1L,
 550     MWM_INPUT_FULL_APPLICATION_MODAL    = 3L
 551 };
 552
 553 static QtMotifWmHints getMotifWmHints(QXcbConnection *c, xcb_window_t window)
 554 {
 555     QtMotifWmHints hints;
 556
 557     xcb_get_property_cookie_t get_cookie =
 558         xcb_get_property(c->xcb_connection(), 0, window, c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 559                          c->atom(QXcbAtom::_MOTIF_WM_HINTS), 0, 20);
 560
 561     xcb_generic_error_t *error;
 562
 563     xcb_get_property_reply_t *reply =
 564         xcb_get_property_reply(c->xcb_connection(), get_cookie, &error);
 565
 566     if (reply && reply->format == 32 && reply->type == c->atom(QXcbAtom::_MOTIF_WM_HINTS)) {
 567         hints = *((QtMotifWmHints *)xcb_get_property_value(reply));
 568     } else if (error) {
 569         c->handleXcbError(error);
 570         free(error);
 571
 572         hints.flags = 0L;
 573         hints.functions = MWM_FUNC_ALL;
 574         hints.decorations = MWM_DECOR_ALL;
 575         hints.input_mode = 0L;
 576         hints.status = 0L;
 577     }
 578
 579     free(reply);
 580
 581     return hints;
 582 }
 583
 584 static void setMotifWmHints(QXcbConnection *c, xcb_window_t window, const QtMotifWmHints &hints)
 585 {
 586     if (hints.flags != 0l) {
 587         Q_XCB_CALL2(xcb_change_property(c->xcb_connection(),
 588                                        XCB_PROP_MODE_REPLACE,
 589                                        window,
 590                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 591                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 592                                        32,
 593                                        5,
 594                                        &hints), c);
 595     } else {
 596         Q_XCB_CALL2(xcb_delete_property(c->xcb_connection(), window, c->atom(QXcbAtom::_MOTIF_WM_HINTS)), c);
 597     }
 598 }
 599
 600 void QXcbWindow::printNetWmState(const QVector<xcb_atom_t> &state)
 601 {
 602     printf("_NET_WM_STATE (%d): ", state.size());
 603     for (int i = 0; i < state.size(); ++i) {
 604 #define CHECK_WM_STATE(state_atom) \
 605         if (state.at(i) == atom(QXcbAtom::state_atom))\
 606             printf(#state_atom " ");
 607         CHECK_WM_STATE(_NET_WM_STATE_ABOVE)
 608         CHECK_WM_STATE(_NET_WM_STATE_BELOW)
 609         CHECK_WM_STATE(_NET_WM_STATE_FULLSCREEN)
 610         CHECK_WM_STATE(_NET_WM_STATE_MAXIMIZED_HORZ)
 611         CHECK_WM_STATE(_NET_WM_STATE_MAXIMIZED_VERT)
 612         CHECK_WM_STATE(_NET_WM_STATE_MODAL)
 613         CHECK_WM_STATE(_NET_WM_STATE_STAYS_ON_TOP)
 614         CHECK_WM_STATE(_NET_WM_STATE_DEMANDS_ATTENTION)
 615 #undef CHECK_WM_STATE
 616     }
 617     printf("\n");
 618 }
 619
 620 QVector<xcb_atom_t> QXcbWindow::getNetWmState()
 621 {
 622     QVector<xcb_atom_t> result;
 623
 624     xcb_get_property_cookie_t get_cookie =
 625         xcb_get_property(xcb_connection(), 0, m_window, atom(QXcbAtom::_NET_WM_STATE),
 626                          XCB_ATOM_ATOM, 0, 1024);
 627
 628     xcb_generic_error_t *error;
 629
 630     xcb_get_property_reply_t *reply =
 631         xcb_get_property_reply(xcb_connection(), get_cookie, &error);
 632
 633     if (reply && reply->format == 32 && reply->type == XCB_ATOM_ATOM) {
 634         result.resize(reply->length);
 635
 636         memcpy(result.data(), xcb_get_property_value(reply), reply->length * sizeof(xcb_atom_t));
 637
 638 #ifdef NET_WM_STATE_DEBUG
 639         printf("getting net wm state (%x)\n", m_window);
 640         printNetWmState(result);
 641 #endif
 642
 643         free(reply);
 644     } else if (error) {
 645         connection()->handleXcbError(error);
 646         free(error);
 647     } else {
 648 #ifdef NET_WM_STATE_DEBUG
 649         printf("getting net wm state (%x), empty\n", m_window);
 650 #endif
 651     }
 652
 653     return result;
 654 }
 655
 656 void QXcbWindow::setNetWmState(const QVector<xcb_atom_t> &atoms)
 657 {
 658     if (atoms.isEmpty()) {
 659         Q_XCB_CALL(xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_STATE)));
 660     } else {
 661         Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 662                                        atom(QXcbAtom::_NET_WM_STATE), XCB_ATOM_ATOM, 32,
 663                                        atoms.count(), atoms.constData()));
 664     }
 665     xcb_flush(xcb_connection());
 666 }
 667
 668
 669 Qt::WindowFlags QXcbWindow::setWindowFlags(Qt::WindowFlags flags)
 670 {
 671     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 672
 673     if (type == Qt::ToolTip)
 674         flags |= Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint;
 675     if (type == Qt::Popup)
 676         flags |= Qt::X11BypassWindowManagerHint;
 677
 678     if (flags & Qt::WindowTransparentForInput) {
 679         uint32_t mask = XCB_EVENT_MASK_NO_EVENT;
 680         xcb_change_window_attributes(xcb_connection(), xcb_window(), XCB_CW_EVENT_MASK, &mask);
 681     }
 682
 683     setNetWmWindowFlags(flags);
 684     setMotifWindowFlags(flags);
 685
 686     setTransparentForMouseEvents(flags & Qt::WindowTransparentForInput);
 687
 688     return flags;
 689 }
 690
 691 void QXcbWindow::setMotifWindowFlags(Qt::WindowFlags flags)
 692 {
 693     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 694
 695     QtMotifWmHints mwmhints;
 696     mwmhints.flags = 0L;
 697     mwmhints.functions = 0L;
 698     mwmhints.decorations = 0;
 699     mwmhints.input_mode = 0L;
 700     mwmhints.status = 0L;
 701
 702     if (type != Qt::SplashScreen) {
 703         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 704
 705         bool customize = flags & Qt::CustomizeWindowHint;
 706         if (!(flags & Qt::FramelessWindowHint) && !(customize && !(flags & Qt::WindowTitleHint))) {
 707             mwmhints.decorations |= MWM_DECOR_BORDER;
 708             mwmhints.decorations |= MWM_DECOR_RESIZEH;
 709
 710             if (flags & Qt::WindowTitleHint)
 711                 mwmhints.decorations |= MWM_DECOR_TITLE;
 712
 713             if (flags & Qt::WindowSystemMenuHint)
 714                 mwmhints.decorations |= MWM_DECOR_MENU;
 715
 716             if (flags & Qt::WindowMinimizeButtonHint) {
 717                 mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 718                 mwmhints.functions |= MWM_FUNC_MINIMIZE;
 719             }
 720
 721             if (flags & Qt::WindowMaximizeButtonHint) {
 722                 mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 723                 mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 724             }
 725
 726             if (flags & Qt::WindowCloseButtonHint)
 727                 mwmhints.functions |= MWM_FUNC_CLOSE;
 728         }
 729     } else {
 730         // if type == Qt::SplashScreen
 731         mwmhints.decorations = MWM_DECOR_ALL;
 732     }
 733
 734     if (mwmhints.functions != 0) {
 735         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 736         mwmhints.functions |= MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 737     } else {
 738         mwmhints.functions = MWM_FUNC_ALL;
 739     }
 740
 741     if (!(flags & Qt::FramelessWindowHint)
 742         && flags & Qt::CustomizeWindowHint
 743         && flags & Qt::WindowTitleHint
 744         && !(flags &
 745              (Qt::WindowMinimizeButtonHint
 746               | Qt::WindowMaximizeButtonHint
 747               | Qt::WindowCloseButtonHint)))
 748     {
 749         // a special case - only the titlebar without any button
 750         mwmhints.flags = MWM_HINTS_FUNCTIONS;
 751         mwmhints.functions = MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 752         mwmhints.decorations = 0;
 753     }
 754
 755     setMotifWmHints(connection(), m_window, mwmhints);
 756 }
 757
 758 void QXcbWindow::changeNetWmState(bool set, xcb_atom_t one, xcb_atom_t two)
 759 {
 760     xcb_client_message_event_t event;
 761
 762     event.response_type = XCB_CLIENT_MESSAGE;
 763     event.format = 32;
 764     event.window = m_window;
 765     event.type = atom(QXcbAtom::_NET_WM_STATE);
 766     event.data.data32[0] = set ? 1 : 0;
 767     event.data.data32[1] = one;
 768     event.data.data32[2] = two;
 769     event.data.data32[3] = 0;
 770     event.data.data32[4] = 0;
 771
 772     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));
 773 }
 774
 775 Qt::WindowState QXcbWindow::setWindowState(Qt::WindowState state)
 776 {
 777     if (state == m_windowState)
 778         return state;
 779
 780     // unset old state
 781     switch (m_windowState) {
 782     case Qt::WindowMinimized:
 783         Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 784         break;
 785     case Qt::WindowMaximized:
 786         changeNetWmState(false,
 787                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 788                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 789         break;
 790     case Qt::WindowFullScreen:
 791         changeNetWmState(false, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 792         break;
 793     default:
 794         break;
 795     }
 796
 797     // set new state
 798     switch (state) {
 799     case Qt::WindowMinimized:
 800         {
 801             xcb_client_message_event_t event;
 802
 803             event.response_type = XCB_CLIENT_MESSAGE;
 804             event.format = 32;
 805             event.window = m_window;
 806             event.type = atom(QXcbAtom::WM_CHANGE_STATE);
 807             event.data.data32[0] = XCB_WM_STATE_ICONIC;
 808             event.data.data32[1] = 0;
 809             event.data.data32[2] = 0;
 810             event.data.data32[3] = 0;
 811             event.data.data32[4] = 0;
 812
 813             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));
 814         }
 815         break;
 816     case Qt::WindowMaximized:
 817         changeNetWmState(true,
 818                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 819                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 820         break;
 821     case Qt::WindowFullScreen:
 822         changeNetWmState(true, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 823         break;
 824     case Qt::WindowNoState:
 825         break;
 826     default:
 827         break;
 828     }
 829
 830     connection()->sync();
 831
 832     m_windowState = state;
 833     return m_windowState;
 834 }
 835
 836 void QXcbWindow::setNetWmWindowFlags(Qt::WindowFlags flags)
 837 {
 838     // in order of decreasing priority
 839     QVector<uint> windowTypes;
 840
 841     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 842
 843     switch (type) {
 844     case Qt::Dialog:
 845     case Qt::Sheet:
 846         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DIALOG));
 847         break;
 848     case Qt::Tool:
 849     case Qt::Drawer:
 850         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_UTILITY));
 851         break;
 852     case Qt::ToolTip:
 853         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_TOOLTIP));
 854         break;
 855     case Qt::SplashScreen:
 856         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_SPLASH));
 857         break;
 858     default:
 859         break;
 860     }
 861
 862     if (flags & Qt::FramelessWindowHint)
 863         windowTypes.append(atom(QXcbAtom::_KDE_NET_WM_WINDOW_TYPE_OVERRIDE));
 864
 865     windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_NORMAL));
 866
 867     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 868                                    atom(QXcbAtom::_NET_WM_WINDOW_TYPE), XCB_ATOM_ATOM, 32,
 869                                    windowTypes.count(), windowTypes.constData()));
 870 }
 871
 872 void QXcbWindow::updateMotifWmHintsBeforeMap()
 873 {
 874     QtMotifWmHints mwmhints = getMotifWmHints(connection(), m_window);
 875
 876     if (window()->windowModality() != Qt::NonModal) {
 877         switch (window()->windowModality()) {
 878         case Qt::WindowModal:
 879             mwmhints.input_mode = MWM_INPUT_PRIMARY_APPLICATION_MODAL;
 880             break;
 881         case Qt::ApplicationModal:
 882         default:
 883             mwmhints.input_mode = MWM_INPUT_FULL_APPLICATION_MODAL;
 884             break;
 885         }
 886         mwmhints.flags |= MWM_HINTS_INPUT_MODE;
 887     } else {
 888         mwmhints.input_mode = MWM_INPUT_MODELESS;
 889         mwmhints.flags &= ~MWM_HINTS_INPUT_MODE;
 890     }
 891
 892     if (window()->minimumSize() == window()->maximumSize()) {
 893         // fixed size, remove the resize handle (since mwm/dtwm
 894         // isn't smart enough to do it itself)
 895         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 896         if (mwmhints.functions == MWM_FUNC_ALL) {
 897             mwmhints.functions = MWM_FUNC_MOVE;
 898         } else {
 899             mwmhints.functions &= ~MWM_FUNC_RESIZE;
 900         }
 901
 902         if (mwmhints.decorations == MWM_DECOR_ALL) {
 903             mwmhints.flags |= MWM_HINTS_DECORATIONS;
 904             mwmhints.decorations = (MWM_DECOR_BORDER
 905                                     | MWM_DECOR_TITLE
 906                                     | MWM_DECOR_MENU);
 907         } else {
 908             mwmhints.decorations &= ~MWM_DECOR_RESIZEH;
 909         }
 910     }
 911
 912     if (window()->windowFlags() & Qt::WindowMinimizeButtonHint) {
 913         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 914         mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 915         mwmhints.functions |= MWM_FUNC_MINIMIZE;
 916     }
 917     if (window()->windowFlags() & Qt::WindowMaximizeButtonHint) {
 918         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 919         mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 920         mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 921     }
 922     if (window()->windowFlags() & Qt::WindowCloseButtonHint)
 923         mwmhints.functions |= MWM_FUNC_CLOSE;
 924
 925     setMotifWmHints(connection(), m_window, mwmhints);
 926 }
 927
 928 void QXcbWindow::updateNetWmStateBeforeMap()
 929 {
 930     QVector<xcb_atom_t> netWmState;
 931
 932     Qt::WindowFlags flags = window()->windowFlags();
 933     if (flags & Qt::WindowStaysOnTopHint) {
 934         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_ABOVE));
 935         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP));
 936     } else if (flags & Qt::WindowStaysOnBottomHint) {
 937         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_BELOW));
 938     }
 939
 940     if (window()->windowState() & Qt::WindowFullScreen) {
 941         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 942     }
 943
 944     if (window()->windowState() & Qt::WindowMaximized) {
 945         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ));
 946         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 947     }
 948
 949     if (window()->windowModality() != Qt::NonModal) {
 950         netWmState.append(atom(QXcbAtom::_NET_WM_STATE_MODAL));
 951     }
 952
 953     setNetWmState(netWmState);
 954 }
 955
 956 void QXcbWindow::updateNetWmUserTime(xcb_timestamp_t timestamp)
 957 {
 958     xcb_window_t wid = m_window;
 959
 960     const bool isSupportedByWM = connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
 961     if (m_netWmUserTimeWindow || isSupportedByWM) {
 962         if (!m_netWmUserTimeWindow) {
 963             m_netWmUserTimeWindow = xcb_generate_id(xcb_connection());
 964             Q_XCB_CALL(xcb_create_window(xcb_connection(),
 965                                          XCB_COPY_FROM_PARENT,            // depth -- same as root
 966                                          m_netWmUserTimeWindow,                        // window id
 967                                          m_window,                   // parent window id
 968                                          -1, -1, 1, 1,
 969                                          0,                               // border width
 970                                          XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
 971                                          m_screen->screen()->root_visual, // visual
 972                                          0,                               // value mask
 973                                          0));                             // value list
 974             wid = m_netWmUserTimeWindow;
 975             xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW),
 976                                 XCB_ATOM_WINDOW, 32, 1, &m_netWmUserTimeWindow);
 977             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME));
 978         } else if (!isSupportedByWM) {
 979             // WM no longer supports it, then we should remove the
 980             // _NET_WM_USER_TIME_WINDOW atom.
 981             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
 982             xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow);
 983             m_netWmUserTimeWindow = XCB_NONE;
 984         } else {
 985             wid = m_netWmUserTimeWindow;
 986         }
 987     }
 988     xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, wid, atom(QXcbAtom::_NET_WM_USER_TIME),
 989                         XCB_ATOM_CARDINAL, 32, 1, &timestamp);
 990 }
 991
 992 void QXcbWindow::setTransparentForMouseEvents(bool transparent)
 993 {
 994     if (transparent == m_transparent)
 995         return;
 996
 997     xcb_rectangle_t rectangle;
 998
 999     xcb_rectangle_t *rect = 0;
1000     int nrect = 0;
1001
1002     if (!transparent) {
1003         rectangle.x = 0;
1004         rectangle.y = 0;
1005         rectangle.width = geometry().width();
1006         rectangle.height = geometry().height();
1007         rect = &rectangle;
1008         nrect = 1;
1009     }
1010
1011     xcb_xfixes_region_t region = xcb_generate_id(xcb_connection());
1012     xcb_xfixes_create_region(xcb_connection(), region, nrect, rect);
1013     xcb_xfixes_set_window_shape_region_checked(xcb_connection(), m_window, XCB_SHAPE_SK_INPUT, 0, 0, region);
1014     xcb_xfixes_destroy_region(xcb_connection(), region);
1015
1016     m_transparent = transparent;
1017 }
1018
1019
1020 WId QXcbWindow::winId() const
1021 {
1022     return m_window;
1023 }
1024
1025 void QXcbWindow::setParent(const QPlatformWindow *parent)
1026 {
1027     // re-create for compatibility
1028     create();
1029
1030     QPoint topLeft = geometry().topLeft();
1031
1032     xcb_window_t xcb_parent_id = parent ? static_cast<const QXcbWindow *>(parent)->xcb_window() : m_screen->root();
1033     Q_XCB_CALL(xcb_reparent_window(xcb_connection(), xcb_window(), xcb_parent_id, topLeft.x(), topLeft.y()));
1034 }
1035
1036 void QXcbWindow::setWindowTitle(const QString &title)
1037 {
1038     QByteArray ba = title.toUtf8();
1039     Q_XCB_CALL(xcb_change_property(xcb_connection(),
1040                                    XCB_PROP_MODE_REPLACE,
1041                                    m_window,
1042                                    atom(QXcbAtom::_NET_WM_NAME),
1043                                    atom(QXcbAtom::UTF8_STRING),
1044                                    8,
1045                                    ba.length(),
1046                                    ba.constData()));
1047 }
1048
1049 void QXcbWindow::raise()
1050 {
1051     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
1052     const quint32 values[] = { XCB_STACK_MODE_ABOVE };
1053     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
1054 }
1055
1056 void QXcbWindow::lower()
1057 {
1058     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
1059     const quint32 values[] = { XCB_STACK_MODE_BELOW };
1060     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
1061 }
1062
1063 void QXcbWindow::propagateSizeHints()
1064 {
1065     // update WM_NORMAL_HINTS
1066     xcb_size_hints_t hints;
1067     memset(&hints, 0, sizeof(hints));
1068
1069     QRect rect = geometry();
1070
1071     QWindow *win = window();
1072
1073     xcb_size_hints_set_position(&hints, true, rect.x(), rect.y());
1074     xcb_size_hints_set_size(&hints, true, rect.width(), rect.height());
1075     xcb_size_hints_set_win_gravity(&hints, qt_window_private(win)->positionPolicy == QWindowPrivate::WindowFrameInclusive
1076                                            ? XCB_GRAVITY_NORTH_WEST : XCB_GRAVITY_STATIC);
1077
1078     QSize minimumSize = win->minimumSize();
1079     QSize maximumSize = win->maximumSize();
1080     QSize baseSize = win->baseSize();
1081     QSize sizeIncrement = win->sizeIncrement();
1082
1083     if (minimumSize.width() > 0 || minimumSize.height() > 0)
1084         xcb_size_hints_set_min_size(&hints, minimumSize.width(), minimumSize.height());
1085
1086     if (maximumSize.width() < QWINDOWSIZE_MAX || maximumSize.height() < QWINDOWSIZE_MAX)
1087         xcb_size_hints_set_max_size(&hints,
1088                                     qMin(XCOORD_MAX, maximumSize.width()),
1089                                     qMin(XCOORD_MAX, maximumSize.height()));
1090
1091     if (sizeIncrement.width() > 0 || sizeIncrement.height() > 0) {
1092         xcb_size_hints_set_base_size(&hints, baseSize.width(), baseSize.height());
1093         xcb_size_hints_set_resize_inc(&hints, sizeIncrement.width(), sizeIncrement.height());
1094     }
1095
1096     xcb_set_wm_normal_hints(xcb_connection(), m_window, &hints);
1097 }
1098
1099 void QXcbWindow::requestActivateWindow()
1100 {
1101     if (m_mapped){
1102         updateNetWmUserTime(connection()->time());
1103         Q_XCB_CALL(xcb_set_input_focus(xcb_connection(), XCB_INPUT_FOCUS_PARENT, m_window, connection()->time()));
1104     }
1105     connection()->sync();
1106 }
1107
1108 QSurfaceFormat QXcbWindow::format() const
1109 {
1110     // ### return actual format
1111     return m_requestedFormat;
1112 }
1113
1114 #if defined(XCB_USE_EGL)
1115 QXcbEGLSurface *QXcbWindow::eglSurface() const
1116 {
1117     if (!m_eglSurface) {
1118         EGLDisplay display = connection()->egl_display();
1119         EGLConfig config = q_configFromGLFormat(display, window()->format(), true);
1120         EGLSurface surface = eglCreateWindowSurface(display, config, (EGLNativeWindowType)m_window, 0);
1121
1122         m_eglSurface = new QXcbEGLSurface(display, surface);
1123     }
1124
1125     return m_eglSurface;
1126 }
1127 #endif
1128
1129 void QXcbWindow::handleExposeEvent(const xcb_expose_event_t *event)
1130 {
1131     QRect rect(event->x, event->y, event->width, event->height);
1132
1133     if (m_exposeRegion.isEmpty())
1134         m_exposeRegion = rect;
1135     else
1136         m_exposeRegion |= rect;
1137
1138     // if count is non-zero there are more expose events pending
1139     if (event->count == 0) {
1140         QWindowSystemInterface::handleSynchronousExposeEvent(window(), m_exposeRegion);
1141         m_exposeRegion = QRegion();
1142     }
1143 }
1144
1145 void QXcbWindow::handleClientMessageEvent(const xcb_client_message_event_t *event)
1146 {
1147     if (event->format != 32)
1148         return;
1149
1150     if (event->type == atom(QXcbAtom::WM_PROTOCOLS)) {
1151         if (event->data.data32[0] == atom(QXcbAtom::WM_DELETE_WINDOW)) {
1152             QWindowSystemInterface::handleCloseEvent(window());
1153         } else if (event->data.data32[0] == atom(QXcbAtom::WM_TAKE_FOCUS)) {
1154             connection()->setTime(event->data.data32[1]);
1155         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_PING)) {
1156             xcb_client_message_event_t reply = *event;
1157
1158             reply.response_type = XCB_CLIENT_MESSAGE;
1159             reply.window = m_screen->root();
1160
1161             xcb_send_event(xcb_connection(), 0, m_screen->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&reply);
1162             xcb_flush(xcb_connection());
1163         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_SYNC_REQUEST)) {
1164             connection()->setTime(event->data.data32[1]);
1165             m_syncValue.lo = event->data.data32[2];
1166             m_syncValue.hi = event->data.data32[3];
1167         } else {
1168             qWarning() << "unhandled WM_PROTOCOLS message:" << connection()->atomName(event->data.data32[0]);
1169         }
1170     } else if (event->type == atom(QXcbAtom::XdndEnter)) {
1171         connection()->drag()->handleEnter(window(), event);
1172     } else if (event->type == atom(QXcbAtom::XdndPosition)) {
1173         connection()->drag()->handlePosition(window(), event, false);
1174     } else if (event->type == atom(QXcbAtom::XdndLeave)) {
1175         connection()->drag()->handleLeave(window(), event, false);
1176     } else if (event->type == atom(QXcbAtom::XdndDrop)) {
1177         connection()->drag()->handleDrop(window(), event, false);
1178     } else {
1179         qWarning() << "unhandled client message:" << connection()->atomName(event->type);
1180     }
1181 }
1182
1183 void QXcbWindow::handleConfigureNotifyEvent(const xcb_configure_notify_event_t *event)
1184 {
1185     QRect rect(event->x, event->y, event->width, event->height);
1186
1187     QPlatformWindow::setGeometry(rect);
1188     QWindowSystemInterface::handleGeometryChange(window(), rect);
1189
1190     m_dirtyFrameMargins = true;
1191
1192 #if XCB_USE_DRI2
1193     if (m_context)
1194         static_cast<QDri2Context *>(m_context)->resize(rect.size());
1195 #endif
1196 }
1197
1198 void QXcbWindow::handleMapNotifyEvent(const xcb_map_notify_event_t *event)
1199 {
1200     if (event->window == m_window) {
1201         m_mapped = true;
1202         QWindowSystemInterface::handleMapEvent(window());
1203     }
1204 }
1205
1206 void QXcbWindow::handleUnmapNotifyEvent(const xcb_unmap_notify_event_t *event)
1207 {
1208     if (event->window == m_window) {
1209         m_mapped = false;
1210         QWindowSystemInterface::handleUnmapEvent(window());
1211     }
1212 }
1213
1214 static Qt::MouseButtons translateMouseButtons(int s)
1215 {
1216     Qt::MouseButtons ret = 0;
1217     if (s & XCB_BUTTON_MASK_1)
1218         ret |= Qt::LeftButton;
1219     if (s & XCB_BUTTON_MASK_2)
1220         ret |= Qt::MidButton;
1221     if (s & XCB_BUTTON_MASK_3)
1222         ret |= Qt::RightButton;
1223     return ret;
1224 }
1225
1226 static Qt::MouseButton translateMouseButton(xcb_button_t s)
1227 {
1228     switch (s) {
1229     case 1:
1230         return Qt::LeftButton;
1231     case 2:
1232         return Qt::MidButton;
1233     case 3:
1234         return Qt::RightButton;
1235     default:
1236         return Qt::NoButton;
1237     }
1238 }
1239
1240 void QXcbWindow::handleButtonPressEvent(const xcb_button_press_event_t *event)
1241 {
1242     updateNetWmUserTime(event->time);
1243
1244     QPoint local(event->event_x, event->event_y);
1245     QPoint global(event->root_x, event->root_y);
1246
1247     Qt::KeyboardModifiers modifiers = Qt::NoModifier;
1248
1249     if (event->detail >= 4 && event->detail <= 7) {
1250         //logic borrowed from qapplication_x11.cpp
1251         int delta = 120 * ((event->detail == 4 || event->detail == 6) ? 1 : -1);
1252         bool hor = (((event->detail == 4 || event->detail == 5)
1253                      && (modifiers & Qt::AltModifier))
1254                     || (event->detail == 6 || event->detail == 7));
1255
1256         QWindowSystemInterface::handleWheelEvent(window(), event->time,
1257                                                  local, global, delta, hor ? Qt::Horizontal : Qt::Vertical);
1258         return;
1259     }
1260
1261     handleMouseEvent(event->detail, event->state, event->time, local, global);
1262 }
1263
1264 void QXcbWindow::handleButtonReleaseEvent(const xcb_button_release_event_t *event)
1265 {
1266     QPoint local(event->event_x, event->event_y);
1267     QPoint global(event->root_x, event->root_y);
1268
1269     handleMouseEvent(event->detail, event->state, event->time, local, global);
1270 }
1271
1272 void QXcbWindow::handleMotionNotifyEvent(const xcb_motion_notify_event_t *event)
1273 {
1274     QPoint local(event->event_x, event->event_y);
1275     QPoint global(event->root_x, event->root_y);
1276
1277     handleMouseEvent(event->detail, event->state, event->time, local, global);
1278 }
1279
1280 void QXcbWindow::handleMouseEvent(xcb_button_t detail, uint16_t state, xcb_timestamp_t time, const QPoint &local, const QPoint &global)
1281 {
1282     connection()->setTime(time);
1283
1284     Qt::MouseButtons buttons = translateMouseButtons(state);
1285     Qt::MouseButton button = translateMouseButton(detail);
1286
1287     buttons ^= button; // X event uses state *before*, Qt uses state *after*
1288
1289     QWindowSystemInterface::handleMouseEvent(window(), time, local, global, buttons);
1290 }
1291
1292 void QXcbWindow::handleEnterNotifyEvent(const xcb_enter_notify_event_t *event)
1293 {
1294     connection()->setTime(event->time);
1295
1296     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1297         || event->detail == XCB_NOTIFY_DETAIL_VIRTUAL
1298         || event->detail == XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL)
1299     {
1300         return;
1301     }
1302
1303     QWindowSystemInterface::handleEnterEvent(window());
1304 }
1305
1306 void QXcbWindow::handleLeaveNotifyEvent(const xcb_leave_notify_event_t *event)
1307 {
1308     connection()->setTime(event->time);
1309
1310     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1311         || event->detail == XCB_NOTIFY_DETAIL_INFERIOR)
1312     {
1313         return;
1314     }
1315
1316     QWindowSystemInterface::handleLeaveEvent(window());
1317 }
1318
1319 void QXcbWindow::handleFocusInEvent(const xcb_focus_in_event_t *)
1320 {
1321     QWindowSystemInterface::handleWindowActivated(window());
1322 }
1323
1324 static bool focusInPeeker(xcb_generic_event_t *event)
1325 {
1326     if (!event) {
1327         // FocusIn event is not in the queue, proceed with FocusOut normally.
1328         QWindowSystemInterface::handleWindowActivated(0);
1329         return true;
1330     }
1331     uint response_type = event->response_type & ~0x80;
1332     return response_type == XCB_FOCUS_IN;
1333 }
1334
1335 void QXcbWindow::handleFocusOutEvent(const xcb_focus_out_event_t *)
1336 {
1337     // Do not set the active window to 0 if there is a FocusIn coming.
1338     // There is however no equivalent for XPutBackEvent so register a
1339     // callback for QXcbConnection instead.
1340     connection()->addPeekFunc(focusInPeeker);
1341 }
1342
1343 void QXcbWindow::updateSyncRequestCounter()
1344 {
1345     if (m_screen->syncRequestSupported() && (m_syncValue.lo != 0 || m_syncValue.hi != 0)) {
1346         Q_XCB_CALL(xcb_sync_set_counter(xcb_connection(), m_syncCounter, m_syncValue));
1347         xcb_flush(xcb_connection());
1348         connection()->sync();
1349
1350         m_syncValue.lo = 0;
1351         m_syncValue.hi = 0;
1352     }
1353 }
1354
1355 bool QXcbWindow::setKeyboardGrabEnabled(bool grab)
1356 {
1357     if (!grab) {
1358         xcb_ungrab_keyboard(xcb_connection(), XCB_TIME_CURRENT_TIME);
1359         return true;
1360     }
1361     xcb_grab_keyboard_cookie_t cookie = xcb_grab_keyboard(xcb_connection(), false,
1362                                                           m_window, XCB_TIME_CURRENT_TIME,
1363                                                           XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
1364     xcb_generic_error_t *err;
1365     xcb_grab_keyboard_reply_t *reply = xcb_grab_keyboard_reply(xcb_connection(), cookie, &err);
1366     bool result = !(err || !reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1367     free(reply);
1368     free(err);
1369     return result;
1370 }
1371
1372 bool QXcbWindow::setMouseGrabEnabled(bool grab)
1373 {
1374     if (!grab) {
1375         xcb_ungrab_pointer(xcb_connection(), XCB_TIME_CURRENT_TIME);
1376         return true;
1377     }
1378     xcb_grab_pointer_cookie_t cookie = xcb_grab_pointer(xcb_connection(), false, m_window,
1379                                                         (XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE
1380                                                          | XCB_EVENT_MASK_BUTTON_MOTION | XCB_EVENT_MASK_ENTER_WINDOW
1381                                                          | XCB_EVENT_MASK_LEAVE_WINDOW | XCB_EVENT_MASK_POINTER_MOTION),
1382                                                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC,
1383                                                         XCB_WINDOW_NONE, XCB_CURSOR_NONE,
1384                                                         XCB_TIME_CURRENT_TIME);
1385     xcb_generic_error_t *err;
1386     xcb_grab_pointer_reply_t *reply = xcb_grab_pointer_reply(xcb_connection(), cookie, &err);
1387     bool result = !(err || !reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1388     free(reply);
1389     free(err);
1390     return result;
1391 }
1392
1393 void QXcbWindow::setCursor(xcb_cursor_t cursor)
1394 {
1395     xcb_change_window_attributes(xcb_connection(), m_window, XCB_CW_CURSOR, &cursor);
1396     xcb_flush(xcb_connection());
1397 }
1398
1399 QT_END_NAMESPACE