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