src/plugins/platforms/xcb/qxcbwindow.cpp

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  22 ** Alternatively, this file may be used under the terms of the GNU General
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  41
  42 #include "qxcbwindow.h"
  43
  44 #include <QtDebug>
  45 #include <QScreen>
  46
  47 #include "qxcbconnection.h"
  48 #include "qxcbscreen.h"
  49 #include "qxcbdrag.h"
  50 #include "qxcbkeyboard.h"
  51 #include "qxcbwmsupport.h"
  52
  53 #include <qplatformintegration_qpa.h>
  54
  55 #ifdef XCB_USE_DRI2
  56 #include "qdri2context.h"
  57 #endif
  58
  59 // FIXME This workaround can be removed for xcb-icccm > 3.8
  60 #define class class_name
  61 #include <xcb/xcb_icccm.h>
  62 #undef class
  63 #include <xcb/xfixes.h>
  64
  65 // xcb-icccm 3.8 support
  66 #ifdef XCB_ICCCM_NUM_WM_SIZE_HINTS_ELEMENTS
  67 #define xcb_get_wm_hints_reply xcb_icccm_get_wm_hints_reply
  68 #define xcb_get_wm_hints xcb_icccm_get_wm_hints
  69 #define xcb_get_wm_hints_unchecked xcb_icccm_get_wm_hints_unchecked
  70 #define xcb_set_wm_hints xcb_icccm_set_wm_hints
  71 #define xcb_set_wm_normal_hints xcb_icccm_set_wm_normal_hints
  72 #define xcb_size_hints_set_base_size xcb_icccm_size_hints_set_base_size
  73 #define xcb_size_hints_set_max_size xcb_icccm_size_hints_set_max_size
  74 #define xcb_size_hints_set_min_size xcb_icccm_size_hints_set_min_size
  75 #define xcb_size_hints_set_position xcb_icccm_size_hints_set_position
  76 #define xcb_size_hints_set_resize_inc xcb_icccm_size_hints_set_resize_inc
  77 #define xcb_size_hints_set_size xcb_icccm_size_hints_set_size
  78 #define xcb_size_hints_set_win_gravity xcb_icccm_size_hints_set_win_gravity
  79 #define xcb_wm_hints_set_iconic xcb_icccm_wm_hints_set_iconic
  80 #define xcb_wm_hints_set_normal xcb_icccm_wm_hints_set_normal
  81 #define xcb_wm_hints_set_input xcb_icccm_wm_hints_set_input
  82 #define xcb_wm_hints_t xcb_icccm_wm_hints_t
  83 #define XCB_WM_STATE_ICONIC XCB_ICCCM_WM_STATE_ICONIC
  84 #define XCB_WM_STATE_WITHDRAWN XCB_ICCCM_WM_STATE_WITHDRAWN
  85 #endif
  86
  87 #include <private/qguiapplication_p.h>
  88 #include <private/qwindow_p.h>
  89
  90 #include <QtGui/QPlatformBackingStore>
  91 #include <QtGui/QWindowSystemInterface>
  92
  93 #include <stdio.h>
  94
  95 #ifdef XCB_USE_XLIB
  96 #include <X11/Xlib.h>
  97 #include <X11/Xutil.h>
  98 #endif
  99
 100 #ifdef XCB_USE_XINPUT2_MAEMO
 101 #include <X11/extensions/XInput2.h>
 102 #endif
 103
 104 #if defined(XCB_USE_GLX)
 105 #include "qglxintegration.h"
 106 #include <QtPlatformSupport/private/qglxconvenience_p.h>
 107 #elif defined(XCB_USE_EGL)
 108 #include "qxcbeglsurface.h"
 109 #include <QtPlatformSupport/private/qeglconvenience_p.h>
 110 #include <QtPlatformSupport/private/qxlibeglintegration_p.h>
 111 #endif
 112
 113 #define XCOORD_MAX 16383
 114
 115 //#ifdef NET_WM_STATE_DEBUG
 116
 117 QT_BEGIN_NAMESPACE
 118
 119 // Returns true if we should set WM_TRANSIENT_FOR on \a w
 120 static inline bool isTransient(const QWindow *w)
 121 {
 122     return w->windowType() == Qt::Dialog
 123            || w->windowType() == Qt::Sheet
 124            || w->windowType() == Qt::Tool
 125            || w->windowType() == Qt::SplashScreen
 126            || w->windowType() == Qt::ToolTip
 127            || w->windowType() == Qt::Drawer
 128            || w->windowType() == Qt::Popup;
 129 }
 130
 131 static inline QImage::Format imageFormatForDepth(int depth)
 132 {
 133     switch (depth) {
 134         case 32: return QImage::Format_ARGB32_Premultiplied;
 135         case 24: return QImage::Format_RGB32;
 136         case 16: return QImage::Format_RGB16;
 137         default: return QImage::Format_Invalid;
 138     }
 139 }
 140
 141 QXcbWindow::QXcbWindow(QWindow *window)
 142     : QPlatformWindow(window)
 143     , m_window(0)
 144     , m_syncCounter(0)
 145     , m_mapped(false)
 146     , m_transparent(false)
 147     , m_deferredActivation(false)
 148     , m_netWmUserTimeWindow(XCB_NONE)
 149 #if defined(XCB_USE_EGL)
 150     , m_eglSurface(0)
 151 #endif
 152     , m_lastWindowStateEvent(-1)
 153 {
 154     m_screen = static_cast<QXcbScreen *>(window->screen()->handle());
 155
 156     setConnection(m_screen->connection());
 157
 158     create();
 159 }
 160
 161 void QXcbWindow::create()
 162 {
 163     destroy();
 164
 165     m_windowState = Qt::WindowNoState;
 166
 167     Qt::WindowType type = window()->windowType();
 168
 169     if (type == Qt::Desktop) {
 170         m_window = m_screen->root();
 171         m_depth = m_screen->screen()->root_depth;
 172         m_imageFormat = imageFormatForDepth(m_depth);
 173         connection()->addWindow(m_window, this);
 174         return;
 175     }
 176
 177     const quint32 mask = XCB_CW_BACK_PIXMAP | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_SAVE_UNDER | XCB_CW_EVENT_MASK;
 178     const quint32 values[] = {
 179         // XCB_CW_BACK_PIXMAP
 180         XCB_NONE,
 181         // XCB_CW_OVERRIDE_REDIRECT
 182         type == Qt::Popup || type == Qt::ToolTip,
 183         // XCB_CW_SAVE_UNDER
 184         type == Qt::Popup || type == Qt::Tool || type == Qt::SplashScreen || type == Qt::ToolTip || type == Qt::Drawer,
 185         // XCB_CW_EVENT_MASK
 186         XCB_EVENT_MASK_EXPOSURE
 187         | XCB_EVENT_MASK_STRUCTURE_NOTIFY
 188         | XCB_EVENT_MASK_KEY_PRESS
 189         | XCB_EVENT_MASK_KEY_RELEASE
 190         | XCB_EVENT_MASK_BUTTON_PRESS
 191         | XCB_EVENT_MASK_BUTTON_RELEASE
 192         | XCB_EVENT_MASK_BUTTON_MOTION
 193         | XCB_EVENT_MASK_ENTER_WINDOW
 194         | XCB_EVENT_MASK_LEAVE_WINDOW
 195         | XCB_EVENT_MASK_POINTER_MOTION
 196         | XCB_EVENT_MASK_PROPERTY_CHANGE
 197         | XCB_EVENT_MASK_FOCUS_CHANGE
 198     };
 199
 200     QRect rect = window()->geometry();
 201     QPlatformWindow::setGeometry(rect);
 202
 203     rect.setWidth(qBound(1, rect.width(), XCOORD_MAX));
 204     rect.setHeight(qBound(1, rect.height(), XCOORD_MAX));
 205
 206     xcb_window_t xcb_parent_id = m_screen->root();
 207     if (parent())
 208         xcb_parent_id = static_cast<QXcbWindow *>(parent())->xcb_window();
 209
 210     m_format = window()->requestedFormat();
 211
 212 #if (defined(XCB_USE_GLX) || defined(XCB_USE_EGL)) && defined(XCB_USE_XLIB)
 213     if (QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::OpenGL)
 214         || m_format.hasAlpha())
 215     {
 216 #if defined(XCB_USE_GLX)
 217         XVisualInfo *visualInfo = qglx_findVisualInfo(DISPLAY_FROM_XCB(m_screen), m_screen->screenNumber(), &m_format);
 218         if (!visualInfo)
 219             qFatal("Could not initialize GLX");
 220 #elif defined(XCB_USE_EGL)
 221         EGLDisplay eglDisplay = connection()->egl_display();
 222         EGLConfig eglConfig = q_configFromGLFormat(eglDisplay, m_format, true);
 223         m_format = q_glFormatFromConfig(eglDisplay, eglConfig);
 224
 225         VisualID id = QXlibEglIntegration::getCompatibleVisualId(DISPLAY_FROM_XCB(this), eglDisplay, eglConfig);
 226
 227         XVisualInfo visualInfoTemplate;
 228         memset(&visualInfoTemplate, 0, sizeof(XVisualInfo));
 229         visualInfoTemplate.visualid = id;
 230
 231         XVisualInfo *visualInfo;
 232         int matchingCount = 0;
 233         visualInfo = XGetVisualInfo(DISPLAY_FROM_XCB(this), VisualIDMask, &visualInfoTemplate, &matchingCount);
 234         if (!visualInfo)
 235             qFatal("Could not initialize EGL");
 236 #endif //XCB_USE_GLX
 237         m_depth = visualInfo->depth;
 238         m_imageFormat = imageFormatForDepth(m_depth);
 239         Colormap cmap = XCreateColormap(DISPLAY_FROM_XCB(this), xcb_parent_id, visualInfo->visual, AllocNone);
 240
 241         XSetWindowAttributes a;
 242         a.background_pixel = WhitePixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 243         a.border_pixel = BlackPixel(DISPLAY_FROM_XCB(this), m_screen->screenNumber());
 244         a.colormap = cmap;
 245
 246         m_visualId = visualInfo->visualid;
 247
 248         m_window = XCreateWindow(DISPLAY_FROM_XCB(this), xcb_parent_id, rect.x(), rect.y(), rect.width(), rect.height(),
 249                                   0, visualInfo->depth, InputOutput, visualInfo->visual,
 250                                   CWBackPixel|CWBorderPixel|CWColormap, &a);
 251
 252         XFree(visualInfo);
 253     } else
 254 #endif //defined(XCB_USE_GLX) || defined(XCB_USE_EGL)
 255     {
 256         m_window = xcb_generate_id(xcb_connection());
 257         m_depth = m_screen->screen()->root_depth;
 258         m_imageFormat = imageFormatForDepth(m_depth);
 259         m_visualId = m_screen->screen()->root_visual;
 260
 261         Q_XCB_CALL(xcb_create_window(xcb_connection(),
 262                                      XCB_COPY_FROM_PARENT,            // depth -- same as root
 263                                      m_window,                        // window id
 264                                      xcb_parent_id,                   // parent window id
 265                                      rect.x(),
 266                                      rect.y(),
 267                                      rect.width(),
 268                                      rect.height(),
 269                                      0,                               // border width
 270                                      XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
 271                                      m_visualId,                      // visual
 272                                      0,                               // value mask
 273                                      0));                             // value list
 274     }
 275
 276     connection()->addWindow(m_window, this);
 277
 278     Q_XCB_CALL(xcb_change_window_attributes(xcb_connection(), m_window, mask, values));
 279
 280     propagateSizeHints();
 281
 282     xcb_atom_t properties[4];
 283     int propertyCount = 0;
 284     properties[propertyCount++] = atom(QXcbAtom::WM_DELETE_WINDOW);
 285     properties[propertyCount++] = atom(QXcbAtom::WM_TAKE_FOCUS);
 286     properties[propertyCount++] = atom(QXcbAtom::_NET_WM_PING);
 287
 288     if (m_screen->syncRequestSupported())
 289         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_SYNC_REQUEST);
 290
 291     if (window()->windowFlags() & Qt::WindowContextHelpButtonHint)
 292         properties[propertyCount++] = atom(QXcbAtom::_NET_WM_CONTEXT_HELP);
 293
 294     Q_XCB_CALL(xcb_change_property(xcb_connection(),
 295                                    XCB_PROP_MODE_REPLACE,
 296                                    m_window,
 297                                    atom(QXcbAtom::WM_PROTOCOLS),
 298                                    XCB_ATOM_ATOM,
 299                                    32,
 300                                    propertyCount,
 301                                    properties));
 302     m_syncValue.hi = 0;
 303     m_syncValue.lo = 0;
 304
 305     if (m_screen->syncRequestSupported()) {
 306         m_syncCounter = xcb_generate_id(xcb_connection());
 307         Q_XCB_CALL(xcb_sync_create_counter(xcb_connection(), m_syncCounter, m_syncValue));
 308
 309         Q_XCB_CALL(xcb_change_property(xcb_connection(),
 310                                        XCB_PROP_MODE_REPLACE,
 311                                        m_window,
 312                                        atom(QXcbAtom::_NET_WM_SYNC_REQUEST_COUNTER),
 313                                        XCB_ATOM_CARDINAL,
 314                                        32,
 315                                        1,
 316                                        &m_syncCounter));
 317     }
 318
 319     // set the PID to let the WM kill the application if unresponsive
 320     long pid = getpid();
 321     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 322                                    atom(QXcbAtom::_NET_WM_PID), XCB_ATOM_CARDINAL, 32,
 323                                    1, &pid));
 324
 325     xcb_wm_hints_t hints;
 326     memset(&hints, 0, sizeof(hints));
 327     xcb_wm_hints_set_normal(&hints);
 328
 329     xcb_wm_hints_set_input(&hints, !(window()->windowFlags() & Qt::WindowDoesNotAcceptFocus));
 330
 331     xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 332
 333     xcb_window_t leader = m_screen->clientLeader();
 334     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 335                                    atom(QXcbAtom::WM_CLIENT_LEADER), XCB_ATOM_WINDOW, 32,
 336                                    1, &leader));
 337
 338 #ifdef XCB_USE_XINPUT2_MAEMO
 339     if (connection()->isUsingXInput2()) {
 340         XIEventMask xieventmask;
 341         uchar bitmask[2] = { 0, 0 };
 342
 343         xieventmask.deviceid = XIAllMasterDevices;
 344         xieventmask.mask = bitmask;
 345         xieventmask.mask_len = sizeof(bitmask);
 346
 347         XISetMask(bitmask, XI_ButtonPress);
 348         XISetMask(bitmask, XI_ButtonRelease);
 349         XISetMask(bitmask, XI_Motion);
 350
 351         XISelectEvents(DISPLAY_FROM_XCB(this), m_window, &xieventmask, 1);
 352     }
 353 #endif
 354
 355     setWindowFlags(window()->windowFlags());
 356     setWindowTitle(window()->windowTitle());
 357     setWindowState(window()->windowState());
 358
 359     if (window()->windowFlags() & Qt::WindowTransparentForInput)
 360         setTransparentForMouseEvents(true);
 361
 362     connection()->drag()->dndEnable(this, true);
 363 }
 364
 365 QXcbWindow::~QXcbWindow()
 366 {
 367     destroy();
 368 }
 369
 370 void QXcbWindow::destroy()
 371 {
 372     if (m_syncCounter && m_screen->syncRequestSupported())
 373         Q_XCB_CALL(xcb_sync_destroy_counter(xcb_connection(), m_syncCounter));
 374     if (m_window) {
 375         if (m_netWmUserTimeWindow) {
 376             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
 377             // Some window managers, like metacity, do XSelectInput on the _NET_WM_USER_TIME_WINDOW window,
 378             // without trapping BadWindow (which crashes when the user time window is destroyed).
 379             connection()->sync();
 380             xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow);
 381             m_netWmUserTimeWindow = XCB_NONE;
 382         }
 383         connection()->removeWindow(m_window);
 384         Q_XCB_CALL(xcb_destroy_window(xcb_connection(), m_window));
 385     }
 386     m_mapped = false;
 387
 388 #if defined(XCB_USE_EGL)
 389     delete m_eglSurface;
 390     m_eglSurface = 0;
 391 #endif
 392 }
 393
 394 void QXcbWindow::setGeometry(const QRect &rect)
 395 {
 396     QPlatformWindow::setGeometry(rect);
 397
 398     propagateSizeHints();
 399
 400     const quint32 mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
 401     const qint32 values[] = {
 402         qBound<qint32>(-XCOORD_MAX, rect.x(),      XCOORD_MAX),
 403         qBound<qint32>(-XCOORD_MAX, rect.y(),      XCOORD_MAX),
 404         qBound<qint32>(1,           rect.width(),  XCOORD_MAX),
 405         qBound<qint32>(1,           rect.height(), XCOORD_MAX),
 406     };
 407
 408     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, reinterpret_cast<const quint32*>(values)));
 409
 410     xcb_flush(xcb_connection());
 411 }
 412
 413 QMargins QXcbWindow::frameMargins() const
 414 {
 415     if (m_dirtyFrameMargins) {
 416         xcb_window_t window = m_window;
 417         xcb_window_t parent = m_window;
 418
 419         bool foundRoot = false;
 420
 421         const QVector<xcb_window_t> &virtualRoots =
 422             connection()->wmSupport()->virtualRoots();
 423
 424         while (!foundRoot) {
 425             xcb_query_tree_cookie_t cookie = xcb_query_tree_unchecked(xcb_connection(), parent);
 426
 427             xcb_query_tree_reply_t *reply = xcb_query_tree_reply(xcb_connection(), cookie, NULL);
 428             if (reply) {
 429                 if (reply->root == reply->parent || virtualRoots.indexOf(reply->parent) != -1) {
 430                     foundRoot = true;
 431                 } else {
 432                     window = parent;
 433                     parent = reply->parent;
 434                 }
 435
 436                 free(reply);
 437             } else {
 438                 m_dirtyFrameMargins = false;
 439                 m_frameMargins = QMargins();
 440                 return m_frameMargins;
 441             }
 442         }
 443
 444         QPoint offset;
 445
 446         xcb_translate_coordinates_reply_t *reply =
 447             xcb_translate_coordinates_reply(
 448                 xcb_connection(),
 449                 xcb_translate_coordinates(xcb_connection(), window, parent, 0, 0),
 450                 NULL);
 451
 452         if (reply) {
 453             offset = QPoint(reply->dst_x, reply->dst_y);
 454             free(reply);
 455         }
 456
 457         xcb_get_geometry_reply_t *geom =
 458             xcb_get_geometry_reply(
 459                 xcb_connection(),
 460                 xcb_get_geometry(xcb_connection(), parent),
 461                 NULL);
 462
 463         if (geom) {
 464             // --
 465             // add the border_width for the window managers frame... some window managers
 466             // do not use a border_width of zero for their frames, and if we the left and
 467             // top strut, we ensure that pos() is absolutely correct.  frameGeometry()
 468             // will still be incorrect though... perhaps i should have foffset as well, to
 469             // indicate the frame offset (equal to the border_width on X).
 470             // - Brad
 471             // -- copied from qwidget_x11.cpp
 472
 473             int left = offset.x() + geom->border_width;
 474             int top = offset.y() + geom->border_width;
 475             int right = geom->width + geom->border_width - geometry().width() - offset.x();
 476             int bottom = geom->height + geom->border_width - geometry().height() - offset.y();
 477
 478             m_frameMargins = QMargins(left, top, right, bottom);
 479
 480             free(geom);
 481         }
 482
 483         m_dirtyFrameMargins = false;
 484     }
 485
 486     return m_frameMargins;
 487 }
 488
 489 void QXcbWindow::setVisible(bool visible)
 490 {
 491     if (visible)
 492         show();
 493     else
 494         hide();
 495 }
 496
 497 void QXcbWindow::show()
 498 {
 499     if (window()->isTopLevel()) {
 500         xcb_get_property_cookie_t cookie = xcb_get_wm_hints_unchecked(xcb_connection(), m_window);
 501
 502         xcb_wm_hints_t hints;
 503         xcb_get_wm_hints_reply(xcb_connection(), cookie, &hints, NULL);
 504
 505         if (window()->windowState() & Qt::WindowMinimized)
 506             xcb_wm_hints_set_iconic(&hints);
 507         else
 508             xcb_wm_hints_set_normal(&hints);
 509
 510         xcb_wm_hints_set_input(&hints, !(window()->windowFlags() & Qt::WindowDoesNotAcceptFocus));
 511
 512         xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 513
 514         // update WM_NORMAL_HINTS
 515         propagateSizeHints();
 516
 517         // update WM_TRANSIENT_FOR
 518         if (window()->transientParent() && isTransient(window())) {
 519             QXcbWindow *transientXcbParent = static_cast<QXcbWindow *>(window()->transientParent()->handle());
 520             if (transientXcbParent) {
 521                 // ICCCM 4.1.2.6
 522                 xcb_window_t parentWindow = transientXcbParent->xcb_window();
 523
 524                 // todo: set transient for group (wm_client_leader) if no parent, a la qwidget_x11.cpp
 525                 Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 526                                                XCB_ATOM_WM_TRANSIENT_FOR, XCB_ATOM_WINDOW, 32,
 527                                                1, &parentWindow));
 528             }
 529         }
 530
 531         // update _MOTIF_WM_HINTS
 532         updateMotifWmHintsBeforeMap();
 533
 534         // update _NET_WM_STATE
 535         updateNetWmStateBeforeMap();
 536     }
 537
 538     if (connection()->time() != XCB_TIME_CURRENT_TIME)
 539         updateNetWmUserTime(connection()->time());
 540
 541     Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 542     xcb_flush(xcb_connection());
 543
 544     connection()->sync();
 545 }
 546
 547 void QXcbWindow::hide()
 548 {
 549     Q_XCB_CALL(xcb_unmap_window(xcb_connection(), m_window));
 550
 551     // send synthetic UnmapNotify event according to icccm 4.1.4
 552     xcb_unmap_notify_event_t event;
 553     event.response_type = XCB_UNMAP_NOTIFY;
 554     event.event = m_screen->root();
 555     event.window = m_window;
 556     event.from_configure = false;
 557     Q_XCB_CALL(xcb_send_event(xcb_connection(), false, m_screen->root(),
 558                               XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&event));
 559
 560     xcb_flush(xcb_connection());
 561
 562     m_mapped = false;
 563 }
 564
 565 struct QtMotifWmHints {
 566     quint32 flags, functions, decorations;
 567     qint32 input_mode;
 568     quint32 status;
 569 };
 570
 571 enum {
 572     MWM_HINTS_FUNCTIONS   = (1L << 0),
 573
 574     MWM_FUNC_ALL      = (1L << 0),
 575     MWM_FUNC_RESIZE   = (1L << 1),
 576     MWM_FUNC_MOVE     = (1L << 2),
 577     MWM_FUNC_MINIMIZE = (1L << 3),
 578     MWM_FUNC_MAXIMIZE = (1L << 4),
 579     MWM_FUNC_CLOSE    = (1L << 5),
 580
 581     MWM_HINTS_DECORATIONS = (1L << 1),
 582
 583     MWM_DECOR_ALL      = (1L << 0),
 584     MWM_DECOR_BORDER   = (1L << 1),
 585     MWM_DECOR_RESIZEH  = (1L << 2),
 586     MWM_DECOR_TITLE    = (1L << 3),
 587     MWM_DECOR_MENU     = (1L << 4),
 588     MWM_DECOR_MINIMIZE = (1L << 5),
 589     MWM_DECOR_MAXIMIZE = (1L << 6),
 590
 591     MWM_HINTS_INPUT_MODE = (1L << 2),
 592
 593     MWM_INPUT_MODELESS                  = 0L,
 594     MWM_INPUT_PRIMARY_APPLICATION_MODAL = 1L,
 595     MWM_INPUT_FULL_APPLICATION_MODAL    = 3L
 596 };
 597
 598 static QtMotifWmHints getMotifWmHints(QXcbConnection *c, xcb_window_t window)
 599 {
 600     QtMotifWmHints hints;
 601
 602     xcb_get_property_cookie_t get_cookie =
 603         xcb_get_property_unchecked(c->xcb_connection(), 0, window, c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 604                          c->atom(QXcbAtom::_MOTIF_WM_HINTS), 0, 20);
 605
 606     xcb_get_property_reply_t *reply =
 607         xcb_get_property_reply(c->xcb_connection(), get_cookie, NULL);
 608
 609     if (reply && reply->format == 32 && reply->type == c->atom(QXcbAtom::_MOTIF_WM_HINTS)) {
 610         hints = *((QtMotifWmHints *)xcb_get_property_value(reply));
 611     } else {
 612         hints.flags = 0L;
 613         hints.functions = MWM_FUNC_ALL;
 614         hints.decorations = MWM_DECOR_ALL;
 615         hints.input_mode = 0L;
 616         hints.status = 0L;
 617     }
 618
 619     free(reply);
 620
 621     return hints;
 622 }
 623
 624 static void setMotifWmHints(QXcbConnection *c, xcb_window_t window, const QtMotifWmHints &hints)
 625 {
 626     if (hints.flags != 0l) {
 627         Q_XCB_CALL2(xcb_change_property(c->xcb_connection(),
 628                                        XCB_PROP_MODE_REPLACE,
 629                                        window,
 630                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 631                                        c->atom(QXcbAtom::_MOTIF_WM_HINTS),
 632                                        32,
 633                                        5,
 634                                        &hints), c);
 635     } else {
 636         Q_XCB_CALL2(xcb_delete_property(c->xcb_connection(), window, c->atom(QXcbAtom::_MOTIF_WM_HINTS)), c);
 637     }
 638 }
 639
 640 QXcbWindow::NetWmStates QXcbWindow::netWmStates()
 641 {
 642     NetWmStates result(0);
 643
 644     xcb_get_property_cookie_t get_cookie =
 645         xcb_get_property_unchecked(xcb_connection(), 0, m_window, atom(QXcbAtom::_NET_WM_STATE),
 646                          XCB_ATOM_ATOM, 0, 1024);
 647
 648     xcb_get_property_reply_t *reply =
 649         xcb_get_property_reply(xcb_connection(), get_cookie, NULL);
 650
 651     if (reply && reply->format == 32 && reply->type == XCB_ATOM_ATOM) {
 652         const xcb_atom_t *states = static_cast<const xcb_atom_t *>(xcb_get_property_value(reply));
 653         const xcb_atom_t *statesEnd = states + reply->length;
 654         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_ABOVE)))
 655             result |= NetWmStateAbove;
 656         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_BELOW)))
 657             result |= NetWmStateBelow;
 658         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN)))
 659             result |= NetWmStateFullScreen;
 660         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ)))
 661             result |= NetWmStateMaximizedHorz;
 662         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT)))
 663             result |= NetWmStateMaximizedVert;
 664         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_MODAL)))
 665             result |= NetWmStateModal;
 666         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP)))
 667             result |= NetWmStateStaysOnTop;
 668         if (statesEnd != qFind(states, statesEnd, atom(QXcbAtom::_NET_WM_STATE_DEMANDS_ATTENTION)))
 669             result |= NetWmStateDemandsAttention;
 670         free(reply);
 671     } else {
 672 #ifdef NET_WM_STATE_DEBUG
 673         printf("getting net wm state (%x), empty\n", m_window);
 674 #endif
 675     }
 676
 677     return result;
 678 }
 679
 680 void QXcbWindow::setNetWmStates(NetWmStates states)
 681 {
 682     QVector<xcb_atom_t> atoms;
 683     if (states & NetWmStateAbove)
 684         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_ABOVE));
 685     if (states & NetWmStateBelow)
 686         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_BELOW));
 687     if (states & NetWmStateFullScreen)
 688         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 689     if (states & NetWmStateMaximizedHorz)
 690         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ));
 691     if (states & NetWmStateMaximizedVert)
 692         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 693     if (states & NetWmStateModal)
 694         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_MODAL));
 695     if (states & NetWmStateStaysOnTop)
 696         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_STAYS_ON_TOP));
 697     if (states & NetWmStateDemandsAttention)
 698         atoms.push_back(atom(QXcbAtom::_NET_WM_STATE_DEMANDS_ATTENTION));
 699
 700     if (atoms.isEmpty()) {
 701         Q_XCB_CALL(xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_STATE)));
 702     } else {
 703         Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 704                                        atom(QXcbAtom::_NET_WM_STATE), XCB_ATOM_ATOM, 32,
 705                                        atoms.count(), atoms.constData()));
 706     }
 707     xcb_flush(xcb_connection());
 708 }
 709
 710 Qt::WindowFlags QXcbWindow::setWindowFlags(Qt::WindowFlags flags)
 711 {
 712     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 713
 714     if (type == Qt::ToolTip)
 715         flags |= Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint;
 716     if (type == Qt::Popup)
 717         flags |= Qt::X11BypassWindowManagerHint;
 718
 719     if (flags & Qt::WindowTransparentForInput) {
 720         uint32_t mask = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_VISIBILITY_CHANGE
 721                  | XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_RESIZE_REDIRECT
 722                 | XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT
 723                 | XCB_EVENT_MASK_FOCUS_CHANGE  | XCB_EVENT_MASK_PROPERTY_CHANGE
 724                 | XCB_EVENT_MASK_COLOR_MAP_CHANGE | XCB_EVENT_MASK_OWNER_GRAB_BUTTON;
 725         xcb_change_window_attributes(xcb_connection(), xcb_window(), XCB_CW_EVENT_MASK, &mask);
 726     }
 727
 728     setNetWmWindowFlags(flags);
 729     setMotifWindowFlags(flags);
 730
 731     setTransparentForMouseEvents(flags & Qt::WindowTransparentForInput);
 732     updateDoesNotAcceptFocus(flags & Qt::WindowDoesNotAcceptFocus);
 733
 734     return flags;
 735 }
 736
 737 void QXcbWindow::setMotifWindowFlags(Qt::WindowFlags flags)
 738 {
 739     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 740
 741     QtMotifWmHints mwmhints;
 742     mwmhints.flags = 0L;
 743     mwmhints.functions = 0L;
 744     mwmhints.decorations = 0;
 745     mwmhints.input_mode = 0L;
 746     mwmhints.status = 0L;
 747
 748     if (type != Qt::SplashScreen) {
 749         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 750
 751         bool customize = flags & Qt::CustomizeWindowHint;
 752         if (!(flags & Qt::FramelessWindowHint) && !(customize && !(flags & Qt::WindowTitleHint))) {
 753             mwmhints.decorations |= MWM_DECOR_BORDER;
 754             mwmhints.decorations |= MWM_DECOR_RESIZEH;
 755
 756             if (flags & Qt::WindowTitleHint)
 757                 mwmhints.decorations |= MWM_DECOR_TITLE;
 758
 759             if (flags & Qt::WindowSystemMenuHint)
 760                 mwmhints.decorations |= MWM_DECOR_MENU;
 761
 762             if (flags & Qt::WindowMinimizeButtonHint) {
 763                 mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 764                 mwmhints.functions |= MWM_FUNC_MINIMIZE;
 765             }
 766
 767             if (flags & Qt::WindowMaximizeButtonHint) {
 768                 mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 769                 mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 770             }
 771
 772             if (flags & Qt::WindowCloseButtonHint)
 773                 mwmhints.functions |= MWM_FUNC_CLOSE;
 774         }
 775     } else {
 776         // if type == Qt::SplashScreen
 777         mwmhints.decorations = MWM_DECOR_ALL;
 778     }
 779
 780     if (mwmhints.functions != 0) {
 781         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 782         mwmhints.functions |= MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 783     } else {
 784         mwmhints.functions = MWM_FUNC_ALL;
 785     }
 786
 787     if (!(flags & Qt::FramelessWindowHint)
 788         && flags & Qt::CustomizeWindowHint
 789         && flags & Qt::WindowTitleHint
 790         && !(flags &
 791              (Qt::WindowMinimizeButtonHint
 792               | Qt::WindowMaximizeButtonHint
 793               | Qt::WindowCloseButtonHint)))
 794     {
 795         // a special case - only the titlebar without any button
 796         mwmhints.flags = MWM_HINTS_FUNCTIONS;
 797         mwmhints.functions = MWM_FUNC_MOVE | MWM_FUNC_RESIZE;
 798         mwmhints.decorations = 0;
 799     }
 800
 801     setMotifWmHints(connection(), m_window, mwmhints);
 802 }
 803
 804 void QXcbWindow::changeNetWmState(bool set, xcb_atom_t one, xcb_atom_t two)
 805 {
 806     xcb_client_message_event_t event;
 807
 808     event.response_type = XCB_CLIENT_MESSAGE;
 809     event.format = 32;
 810     event.window = m_window;
 811     event.type = atom(QXcbAtom::_NET_WM_STATE);
 812     event.data.data32[0] = set ? 1 : 0;
 813     event.data.data32[1] = one;
 814     event.data.data32[2] = two;
 815     event.data.data32[3] = 0;
 816     event.data.data32[4] = 0;
 817
 818     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));
 819 }
 820
 821 Qt::WindowState QXcbWindow::setWindowState(Qt::WindowState state)
 822 {
 823     if (state == m_windowState)
 824         return state;
 825
 826     // unset old state
 827     switch (m_windowState) {
 828     case Qt::WindowMinimized:
 829         Q_XCB_CALL(xcb_map_window(xcb_connection(), m_window));
 830         break;
 831     case Qt::WindowMaximized:
 832         changeNetWmState(false,
 833                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 834                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 835         break;
 836     case Qt::WindowFullScreen:
 837         changeNetWmState(false, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 838         break;
 839     default:
 840         break;
 841     }
 842
 843     // set new state
 844     switch (state) {
 845     case Qt::WindowMinimized:
 846         {
 847             xcb_client_message_event_t event;
 848
 849             event.response_type = XCB_CLIENT_MESSAGE;
 850             event.format = 32;
 851             event.window = m_window;
 852             event.type = atom(QXcbAtom::WM_CHANGE_STATE);
 853             event.data.data32[0] = XCB_WM_STATE_ICONIC;
 854             event.data.data32[1] = 0;
 855             event.data.data32[2] = 0;
 856             event.data.data32[3] = 0;
 857             event.data.data32[4] = 0;
 858
 859             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));
 860         }
 861         break;
 862     case Qt::WindowMaximized:
 863         changeNetWmState(true,
 864                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_HORZ),
 865                          atom(QXcbAtom::_NET_WM_STATE_MAXIMIZED_VERT));
 866         break;
 867     case Qt::WindowFullScreen:
 868         changeNetWmState(true, atom(QXcbAtom::_NET_WM_STATE_FULLSCREEN));
 869         break;
 870     case Qt::WindowNoState:
 871         break;
 872     default:
 873         break;
 874     }
 875
 876     connection()->sync();
 877
 878     m_windowState = state;
 879     return m_windowState;
 880 }
 881
 882 void QXcbWindow::setNetWmWindowFlags(Qt::WindowFlags flags)
 883 {
 884     // in order of decreasing priority
 885     QVector<uint> windowTypes;
 886
 887     Qt::WindowType type = static_cast<Qt::WindowType>(int(flags & Qt::WindowType_Mask));
 888
 889     switch (type) {
 890     case Qt::Dialog:
 891     case Qt::Sheet:
 892         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_DIALOG));
 893         break;
 894     case Qt::Tool:
 895     case Qt::Drawer:
 896         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_UTILITY));
 897         break;
 898     case Qt::ToolTip:
 899         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_TOOLTIP));
 900         break;
 901     case Qt::SplashScreen:
 902         windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_SPLASH));
 903         break;
 904     default:
 905         break;
 906     }
 907
 908     if (flags & Qt::FramelessWindowHint)
 909         windowTypes.append(atom(QXcbAtom::_KDE_NET_WM_WINDOW_TYPE_OVERRIDE));
 910
 911     windowTypes.append(atom(QXcbAtom::_NET_WM_WINDOW_TYPE_NORMAL));
 912
 913     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
 914                                    atom(QXcbAtom::_NET_WM_WINDOW_TYPE), XCB_ATOM_ATOM, 32,
 915                                    windowTypes.count(), windowTypes.constData()));
 916 }
 917
 918 void QXcbWindow::updateMotifWmHintsBeforeMap()
 919 {
 920     QtMotifWmHints mwmhints = getMotifWmHints(connection(), m_window);
 921
 922     if (window()->windowModality() != Qt::NonModal) {
 923         switch (window()->windowModality()) {
 924         case Qt::WindowModal:
 925             mwmhints.input_mode = MWM_INPUT_PRIMARY_APPLICATION_MODAL;
 926             break;
 927         case Qt::ApplicationModal:
 928         default:
 929             mwmhints.input_mode = MWM_INPUT_FULL_APPLICATION_MODAL;
 930             break;
 931         }
 932         mwmhints.flags |= MWM_HINTS_INPUT_MODE;
 933     } else {
 934         mwmhints.input_mode = MWM_INPUT_MODELESS;
 935         mwmhints.flags &= ~MWM_HINTS_INPUT_MODE;
 936     }
 937
 938     if (window()->minimumSize() == window()->maximumSize()) {
 939         // fixed size, remove the resize handle (since mwm/dtwm
 940         // isn't smart enough to do it itself)
 941         mwmhints.flags |= MWM_HINTS_FUNCTIONS;
 942         if (mwmhints.functions == MWM_FUNC_ALL) {
 943             mwmhints.functions = MWM_FUNC_MOVE;
 944         } else {
 945             mwmhints.functions &= ~MWM_FUNC_RESIZE;
 946         }
 947
 948         if (mwmhints.decorations == MWM_DECOR_ALL) {
 949             mwmhints.flags |= MWM_HINTS_DECORATIONS;
 950             mwmhints.decorations = (MWM_DECOR_BORDER
 951                                     | MWM_DECOR_TITLE
 952                                     | MWM_DECOR_MENU);
 953         } else {
 954             mwmhints.decorations &= ~MWM_DECOR_RESIZEH;
 955         }
 956     }
 957
 958     if (window()->windowFlags() & Qt::WindowMinimizeButtonHint) {
 959         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 960         mwmhints.decorations |= MWM_DECOR_MINIMIZE;
 961         mwmhints.functions |= MWM_FUNC_MINIMIZE;
 962     }
 963     if (window()->windowFlags() & Qt::WindowMaximizeButtonHint) {
 964         mwmhints.flags |= MWM_HINTS_DECORATIONS;
 965         mwmhints.decorations |= MWM_DECOR_MAXIMIZE;
 966         mwmhints.functions |= MWM_FUNC_MAXIMIZE;
 967     }
 968     if (window()->windowFlags() & Qt::WindowCloseButtonHint)
 969         mwmhints.functions |= MWM_FUNC_CLOSE;
 970
 971     setMotifWmHints(connection(), m_window, mwmhints);
 972 }
 973
 974 void QXcbWindow::updateNetWmStateBeforeMap()
 975 {
 976     NetWmStates states(0);
 977
 978     const Qt::WindowFlags flags = window()->windowFlags();
 979     if (flags & Qt::WindowStaysOnTopHint) {
 980         states |= NetWmStateAbove;
 981         states |= NetWmStateStaysOnTop;
 982     } else if (flags & Qt::WindowStaysOnBottomHint) {
 983         states |= NetWmStateBelow;
 984     }
 985
 986     if (window()->windowState() & Qt::WindowFullScreen)
 987         states |= NetWmStateFullScreen;
 988
 989     if (window()->windowState() & Qt::WindowMaximized) {
 990         states |= NetWmStateMaximizedHorz;
 991         states |= NetWmStateMaximizedVert;
 992     }
 993
 994     if (window()->windowModality() != Qt::NonModal)
 995         states |= NetWmStateModal;
 996
 997     setNetWmStates(states);
 998 }
 999
1000 void QXcbWindow::updateNetWmUserTime(xcb_timestamp_t timestamp)
1001 {
1002     xcb_window_t wid = m_window;
1003
1004     const bool isSupportedByWM = connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
1005     if (m_netWmUserTimeWindow || isSupportedByWM) {
1006         if (!m_netWmUserTimeWindow) {
1007             m_netWmUserTimeWindow = xcb_generate_id(xcb_connection());
1008             Q_XCB_CALL(xcb_create_window(xcb_connection(),
1009                                          XCB_COPY_FROM_PARENT,            // depth -- same as root
1010                                          m_netWmUserTimeWindow,                        // window id
1011                                          m_window,                   // parent window id
1012                                          -1, -1, 1, 1,
1013                                          0,                               // border width
1014                                          XCB_WINDOW_CLASS_INPUT_OUTPUT,   // window class
1015                                          m_visualId,                      // visual
1016                                          0,                               // value mask
1017                                          0));                             // value list
1018             wid = m_netWmUserTimeWindow;
1019             xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW),
1020                                 XCB_ATOM_WINDOW, 32, 1, &m_netWmUserTimeWindow);
1021             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME));
1022         } else if (!isSupportedByWM) {
1023             // WM no longer supports it, then we should remove the
1024             // _NET_WM_USER_TIME_WINDOW atom.
1025             xcb_delete_property(xcb_connection(), m_window, atom(QXcbAtom::_NET_WM_USER_TIME_WINDOW));
1026             xcb_destroy_window(xcb_connection(), m_netWmUserTimeWindow);
1027             m_netWmUserTimeWindow = XCB_NONE;
1028         } else {
1029             wid = m_netWmUserTimeWindow;
1030         }
1031     }
1032     xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, wid, atom(QXcbAtom::_NET_WM_USER_TIME),
1033                         XCB_ATOM_CARDINAL, 32, 1, &timestamp);
1034 }
1035
1036 void QXcbWindow::setTransparentForMouseEvents(bool transparent)
1037 {
1038     if (transparent == m_transparent)
1039         return;
1040
1041     xcb_rectangle_t rectangle;
1042
1043     xcb_rectangle_t *rect = 0;
1044     int nrect = 0;
1045
1046     if (!transparent) {
1047         rectangle.x = 0;
1048         rectangle.y = 0;
1049         rectangle.width = geometry().width();
1050         rectangle.height = geometry().height();
1051         rect = &rectangle;
1052         nrect = 1;
1053     }
1054
1055     xcb_xfixes_region_t region = xcb_generate_id(xcb_connection());
1056     xcb_xfixes_create_region(xcb_connection(), region, nrect, rect);
1057     xcb_xfixes_set_window_shape_region_checked(xcb_connection(), m_window, XCB_SHAPE_SK_INPUT, 0, 0, region);
1058     xcb_xfixes_destroy_region(xcb_connection(), region);
1059
1060     m_transparent = transparent;
1061 }
1062
1063 void QXcbWindow::updateDoesNotAcceptFocus(bool doesNotAcceptFocus)
1064 {
1065     xcb_get_property_cookie_t cookie = xcb_get_wm_hints_unchecked(xcb_connection(), m_window);
1066
1067     xcb_wm_hints_t hints;
1068     if (!xcb_get_wm_hints_reply(xcb_connection(), cookie, &hints, NULL)) {
1069         return;
1070     }
1071
1072     xcb_wm_hints_set_input(&hints, !doesNotAcceptFocus);
1073     xcb_set_wm_hints(xcb_connection(), m_window, &hints);
1074 }
1075
1076 WId QXcbWindow::winId() const
1077 {
1078     return m_window;
1079 }
1080
1081 void QXcbWindow::setParent(const QPlatformWindow *parent)
1082 {
1083     // re-create for compatibility
1084     create();
1085
1086     QPoint topLeft = geometry().topLeft();
1087
1088     xcb_window_t xcb_parent_id = parent ? static_cast<const QXcbWindow *>(parent)->xcb_window() : m_screen->root();
1089     Q_XCB_CALL(xcb_reparent_window(xcb_connection(), xcb_window(), xcb_parent_id, topLeft.x(), topLeft.y()));
1090 }
1091
1092 void QXcbWindow::setWindowTitle(const QString &title)
1093 {
1094     QByteArray ba = title.toUtf8();
1095     Q_XCB_CALL(xcb_change_property(xcb_connection(),
1096                                    XCB_PROP_MODE_REPLACE,
1097                                    m_window,
1098                                    atom(QXcbAtom::_NET_WM_NAME),
1099                                    atom(QXcbAtom::UTF8_STRING),
1100                                    8,
1101                                    ba.length(),
1102                                    ba.constData()));
1103 }
1104
1105 void QXcbWindow::raise()
1106 {
1107     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
1108     const quint32 values[] = { XCB_STACK_MODE_ABOVE };
1109     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
1110 }
1111
1112 void QXcbWindow::lower()
1113 {
1114     const quint32 mask = XCB_CONFIG_WINDOW_STACK_MODE;
1115     const quint32 values[] = { XCB_STACK_MODE_BELOW };
1116     Q_XCB_CALL(xcb_configure_window(xcb_connection(), m_window, mask, values));
1117 }
1118
1119 void QXcbWindow::propagateSizeHints()
1120 {
1121     // update WM_NORMAL_HINTS
1122     xcb_size_hints_t hints;
1123     memset(&hints, 0, sizeof(hints));
1124
1125     QRect rect = geometry();
1126
1127     QWindow *win = window();
1128
1129     xcb_size_hints_set_position(&hints, true, rect.x(), rect.y());
1130     xcb_size_hints_set_size(&hints, true, rect.width(), rect.height());
1131     xcb_size_hints_set_win_gravity(&hints, qt_window_private(win)->positionPolicy == QWindowPrivate::WindowFrameInclusive
1132                                            ? XCB_GRAVITY_NORTH_WEST : XCB_GRAVITY_STATIC);
1133
1134     QSize minimumSize = win->minimumSize();
1135     QSize maximumSize = win->maximumSize();
1136     QSize baseSize = win->baseSize();
1137     QSize sizeIncrement = win->sizeIncrement();
1138
1139     if (minimumSize.width() > 0 || minimumSize.height() > 0)
1140         xcb_size_hints_set_min_size(&hints, minimumSize.width(), minimumSize.height());
1141
1142     if (maximumSize.width() < QWINDOWSIZE_MAX || maximumSize.height() < QWINDOWSIZE_MAX)
1143         xcb_size_hints_set_max_size(&hints,
1144                                     qMin(XCOORD_MAX, maximumSize.width()),
1145                                     qMin(XCOORD_MAX, maximumSize.height()));
1146
1147     if (sizeIncrement.width() > 0 || sizeIncrement.height() > 0) {
1148         xcb_size_hints_set_base_size(&hints, baseSize.width(), baseSize.height());
1149         xcb_size_hints_set_resize_inc(&hints, sizeIncrement.width(), sizeIncrement.height());
1150     }
1151
1152     xcb_set_wm_normal_hints(xcb_connection(), m_window, &hints);
1153 }
1154
1155 void QXcbWindow::requestActivateWindow()
1156 {
1157     if (!m_mapped) {
1158         m_deferredActivation = true;
1159         return;
1160     }
1161     m_deferredActivation = false;
1162
1163     updateNetWmUserTime(connection()->time());
1164
1165     if (window()->isTopLevel()
1166         && connection()->wmSupport()->isSupportedByWM(atom(QXcbAtom::_NET_ACTIVE_WINDOW))) {
1167         xcb_client_message_event_t event;
1168
1169         event.response_type = XCB_CLIENT_MESSAGE;
1170         event.format = 32;
1171         event.window = m_window;
1172         event.type = atom(QXcbAtom::_NET_ACTIVE_WINDOW);
1173         event.data.data32[0] = 1;
1174         event.data.data32[1] = connection()->time();
1175         QWindow *focusWindow = QGuiApplication::focusWindow();
1176         event.data.data32[2] = focusWindow ? focusWindow->winId() : XCB_NONE;
1177         event.data.data32[3] = 0;
1178         event.data.data32[4] = 0;
1179
1180         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));
1181     } else {
1182         Q_XCB_CALL(xcb_set_input_focus(xcb_connection(), XCB_INPUT_FOCUS_PARENT, m_window, connection()->time()));
1183     }
1184
1185     connection()->sync();
1186 }
1187
1188 #if XCB_USE_MAEMO_WINDOW_PROPERTIES
1189 void QXcbWindow::setOrientation(Qt::ScreenOrientation orientation)
1190 {
1191     int angle = 0;
1192     switch (orientation) {
1193         case Qt::PortraitOrientation: angle = 270; break;
1194         case Qt::LandscapeOrientation: angle = 0; break;
1195         case Qt::InvertedPortraitOrientation: angle = 90; break;
1196         case Qt::InvertedLandscapeOrientation: angle = 180; break;
1197         case Qt::PrimaryOrientation: break;
1198     }
1199     Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
1200                                    atom(QXcbAtom::MeegoTouchOrientationAngle), XCB_ATOM_CARDINAL, 32,
1201                                    1, &angle));
1202 }
1203 #endif
1204
1205 QSurfaceFormat QXcbWindow::format() const
1206 {
1207     // ### return actual format
1208     return m_format;
1209 }
1210
1211 #if defined(XCB_USE_EGL)
1212 QXcbEGLSurface *QXcbWindow::eglSurface() const
1213 {
1214     if (!m_eglSurface) {
1215         EGLDisplay display = connection()->egl_display();
1216         EGLConfig config = q_configFromGLFormat(display, window()->requestedFormat(), true);
1217         EGLSurface surface = eglCreateWindowSurface(display, config, (EGLNativeWindowType)m_window, 0);
1218
1219         m_eglSurface = new QXcbEGLSurface(display, surface);
1220     }
1221
1222     return m_eglSurface;
1223 }
1224 #endif
1225
1226 void QXcbWindow::handleExposeEvent(const xcb_expose_event_t *event)
1227 {
1228     QRect rect(event->x, event->y, event->width, event->height);
1229
1230     if (m_exposeRegion.isEmpty())
1231         m_exposeRegion = rect;
1232     else
1233         m_exposeRegion |= rect;
1234
1235     // if count is non-zero there are more expose events pending
1236     if (event->count == 0) {
1237         QWindowSystemInterface::handleSynchronousExposeEvent(window(), m_exposeRegion);
1238         m_exposeRegion = QRegion();
1239     }
1240 }
1241
1242 void QXcbWindow::handleClientMessageEvent(const xcb_client_message_event_t *event)
1243 {
1244     if (event->format != 32)
1245         return;
1246
1247     if (event->type == atom(QXcbAtom::WM_PROTOCOLS)) {
1248         if (event->data.data32[0] == atom(QXcbAtom::WM_DELETE_WINDOW)) {
1249             QWindowSystemInterface::handleCloseEvent(window());
1250         } else if (event->data.data32[0] == atom(QXcbAtom::WM_TAKE_FOCUS)) {
1251             connection()->setTime(event->data.data32[1]);
1252         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_PING)) {
1253             xcb_client_message_event_t reply = *event;
1254
1255             reply.response_type = XCB_CLIENT_MESSAGE;
1256             reply.window = m_screen->root();
1257
1258             xcb_send_event(xcb_connection(), 0, m_screen->root(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *)&reply);
1259             xcb_flush(xcb_connection());
1260         } else if (event->data.data32[0] == atom(QXcbAtom::_NET_WM_SYNC_REQUEST)) {
1261             connection()->setTime(event->data.data32[1]);
1262             m_syncValue.lo = event->data.data32[2];
1263             m_syncValue.hi = event->data.data32[3];
1264         } else {
1265             qWarning() << "QXcbWindow: Unhandled WM_PROTOCOLS message:" << connection()->atomName(event->data.data32[0]);
1266         }
1267     } else if (event->type == atom(QXcbAtom::XdndEnter)) {
1268         connection()->drag()->handleEnter(window(), event);
1269     } else if (event->type == atom(QXcbAtom::XdndPosition)) {
1270         connection()->drag()->handlePosition(window(), event);
1271     } else if (event->type == atom(QXcbAtom::XdndLeave)) {
1272         connection()->drag()->handleLeave(window(), event);
1273     } else if (event->type == atom(QXcbAtom::XdndDrop)) {
1274         connection()->drag()->handleDrop(window(), event);
1275     } else if (event->type == atom(QXcbAtom::_XEMBED)) { // QSystemTrayIcon
1276     } else {
1277         qWarning() << "QXcbWindow: Unhandled client message:" << connection()->atomName(event->type);
1278     }
1279 }
1280
1281 void QXcbWindow::handleConfigureNotifyEvent(const xcb_configure_notify_event_t *event)
1282 {
1283     bool fromSendEvent = (event->response_type & 0x80);
1284     QPoint pos(event->x, event->y);
1285     if (!parent() && !fromSendEvent) {
1286         // Do not trust the position, query it instead.
1287         xcb_translate_coordinates_cookie_t cookie = xcb_translate_coordinates(xcb_connection(), xcb_window(),
1288                                                                               m_screen->root(), 0, 0);
1289         xcb_translate_coordinates_reply_t *reply = xcb_translate_coordinates_reply(xcb_connection(), cookie, NULL);
1290         if (reply) {
1291             pos.setX(reply->dst_x);
1292             pos.setY(reply->dst_y);
1293             free(reply);
1294         }
1295     }
1296
1297     QRect rect(pos, QSize(event->width, event->height));
1298
1299     QPlatformWindow::setGeometry(rect);
1300     QWindowSystemInterface::handleGeometryChange(window(), rect);
1301
1302     m_dirtyFrameMargins = true;
1303
1304 #if XCB_USE_DRI2
1305     if (m_context)
1306         static_cast<QDri2Context *>(m_context)->resize(rect.size());
1307 #endif
1308 }
1309
1310 void QXcbWindow::handleMapNotifyEvent(const xcb_map_notify_event_t *event)
1311 {
1312     if (event->window == m_window) {
1313         m_mapped = true;
1314         if (m_deferredActivation)
1315             requestActivateWindow();
1316         QWindowSystemInterface::handleMapEvent(window());
1317     }
1318 }
1319
1320 void QXcbWindow::handleUnmapNotifyEvent(const xcb_unmap_notify_event_t *event)
1321 {
1322     if (event->window == m_window) {
1323         m_mapped = false;
1324         QWindowSystemInterface::handleUnmapEvent(window());
1325     }
1326 }
1327
1328 static Qt::MouseButtons translateMouseButtons(int s)
1329 {
1330     Qt::MouseButtons ret = 0;
1331     if (s & XCB_BUTTON_MASK_1)
1332         ret |= Qt::LeftButton;
1333     if (s & XCB_BUTTON_MASK_2)
1334         ret |= Qt::MidButton;
1335     if (s & XCB_BUTTON_MASK_3)
1336         ret |= Qt::RightButton;
1337     return ret;
1338 }
1339
1340 static Qt::MouseButton translateMouseButton(xcb_button_t s)
1341 {
1342     switch (s) {
1343     case 1: return Qt::LeftButton;
1344     case 2: return Qt::MidButton;
1345     case 3: return Qt::RightButton;
1346     // Button values 4-7 were already handled as Wheel events, and won't occur here.
1347     case 8: return Qt::BackButton;      // Also known as Qt::ExtraButton1
1348     case 9: return Qt::ForwardButton;   // Also known as Qt::ExtraButton2
1349     case 10: return Qt::ExtraButton3;
1350     case 11: return Qt::ExtraButton4;
1351     case 12: return Qt::ExtraButton5;
1352     case 13: return Qt::ExtraButton6;
1353     case 14: return Qt::ExtraButton7;
1354     case 15: return Qt::ExtraButton8;
1355     case 16: return Qt::ExtraButton9;
1356     case 17: return Qt::ExtraButton10;
1357     case 18: return Qt::ExtraButton11;
1358     case 19: return Qt::ExtraButton12;
1359     case 20: return Qt::ExtraButton13;
1360     case 21: return Qt::ExtraButton14;
1361     case 22: return Qt::ExtraButton15;
1362     case 23: return Qt::ExtraButton16;
1363     case 24: return Qt::ExtraButton17;
1364     case 25: return Qt::ExtraButton18;
1365     case 26: return Qt::ExtraButton19;
1366     case 27: return Qt::ExtraButton20;
1367     case 28: return Qt::ExtraButton21;
1368     case 29: return Qt::ExtraButton22;
1369     case 30: return Qt::ExtraButton23;
1370     case 31: return Qt::ExtraButton24;
1371     default: return Qt::NoButton;
1372     }
1373 }
1374
1375 void QXcbWindow::handleButtonPressEvent(const xcb_button_press_event_t *event)
1376 {
1377     updateNetWmUserTime(event->time);
1378
1379     QPoint local(event->event_x, event->event_y);
1380     QPoint global(event->root_x, event->root_y);
1381
1382     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1383
1384     if (event->detail >= 4 && event->detail <= 7) {
1385         // Logic borrowed from qapplication_x11.cpp
1386         int delta = 120 * ((event->detail == 4 || event->detail == 6) ? 1 : -1);
1387         bool hor = (((event->detail == 4 || event->detail == 5)
1388                      && (modifiers & Qt::AltModifier))
1389                     || (event->detail == 6 || event->detail == 7));
1390
1391         QWindowSystemInterface::handleWheelEvent(window(), event->time,
1392                                                  local, global, delta, hor ? Qt::Horizontal : Qt::Vertical, modifiers);
1393         return;
1394     }
1395
1396     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1397 }
1398
1399 void QXcbWindow::handleButtonReleaseEvent(const xcb_button_release_event_t *event)
1400 {
1401     QPoint local(event->event_x, event->event_y);
1402     QPoint global(event->root_x, event->root_y);
1403     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1404
1405     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1406 }
1407
1408 void QXcbWindow::handleMotionNotifyEvent(const xcb_motion_notify_event_t *event)
1409 {
1410     QPoint local(event->event_x, event->event_y);
1411     QPoint global(event->root_x, event->root_y);
1412     Qt::KeyboardModifiers modifiers = connection()->keyboard()->translateModifiers(event->state);
1413
1414     handleMouseEvent(event->detail, event->state, event->time, local, global, modifiers);
1415 }
1416
1417 void QXcbWindow::handleMouseEvent(xcb_button_t detail, uint16_t state, xcb_timestamp_t time, const QPoint &local, const QPoint &global, Qt::KeyboardModifiers modifiers)
1418 {
1419     connection()->setTime(time);
1420
1421     Qt::MouseButtons buttons = translateMouseButtons(state);
1422     Qt::MouseButton button = translateMouseButton(detail);
1423
1424     buttons ^= button; // X event uses state *before*, Qt uses state *after*
1425
1426     QWindowSystemInterface::handleMouseEvent(window(), time, local, global, buttons, modifiers);
1427 }
1428
1429 void QXcbWindow::handleEnterNotifyEvent(const xcb_enter_notify_event_t *event)
1430 {
1431     connection()->setTime(event->time);
1432
1433     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1434         || event->detail == XCB_NOTIFY_DETAIL_VIRTUAL
1435         || event->detail == XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL)
1436     {
1437         return;
1438     }
1439
1440     QWindowSystemInterface::handleEnterEvent(window());
1441 }
1442
1443 void QXcbWindow::handleLeaveNotifyEvent(const xcb_leave_notify_event_t *event)
1444 {
1445     connection()->setTime(event->time);
1446
1447     if ((event->mode != XCB_NOTIFY_MODE_NORMAL && event->mode != XCB_NOTIFY_MODE_UNGRAB)
1448         || event->detail == XCB_NOTIFY_DETAIL_INFERIOR)
1449     {
1450         return;
1451     }
1452
1453     QWindowSystemInterface::handleLeaveEvent(window());
1454 }
1455
1456 void QXcbWindow::handlePropertyNotifyEvent(const xcb_property_notify_event_t *event)
1457 {
1458     connection()->setTime(event->time);
1459
1460     const bool propertyDeleted = event->state == XCB_PROPERTY_DELETE;
1461     const xcb_atom_t netWmStateAtom = atom(QXcbAtom::_NET_WM_STATE);
1462     const xcb_atom_t wmStateAtom = atom(QXcbAtom::WM_STATE);
1463
1464     if (event->atom == netWmStateAtom || event->atom == wmStateAtom) {
1465         if (propertyDeleted)
1466             return;
1467
1468         Qt::WindowState newState = Qt::WindowNoState;
1469         if (event->atom == wmStateAtom) { // WM_STATE: Quick check for 'Minimize'.
1470             const xcb_get_property_cookie_t get_cookie =
1471                 xcb_get_property(xcb_connection(), 0, m_window, wmStateAtom,
1472                                  XCB_ATOM_ANY, 0, 1024);
1473
1474             xcb_get_property_reply_t *reply =
1475                 xcb_get_property_reply(xcb_connection(), get_cookie, NULL);
1476
1477             if (reply && reply->format == 32 && reply->type == wmStateAtom) {
1478                 const long *data = (const long *)xcb_get_property_value(reply);
1479                 if (reply->length != 0 && XCB_WM_STATE_ICONIC == data[0])
1480                     newState = Qt::WindowMinimized;
1481                 free(reply);
1482             }
1483         } // WM_STATE: Quick check for 'Minimize'.
1484         if (newState != Qt::WindowMinimized) { // Something else changed, get _NET_WM_STATE.
1485             const NetWmStates states = netWmStates();
1486             if ((states & NetWmStateMaximizedHorz) && (states & NetWmStateMaximizedVert))
1487                 newState = Qt::WindowMaximized;
1488             else if (states & NetWmStateFullScreen)
1489                 newState = Qt::WindowFullScreen;
1490         }
1491         // Send Window state, compress events in case other flags (modality, etc) are changed.
1492         if (m_lastWindowStateEvent != newState) {
1493             QWindowSystemInterface::handleWindowStateChanged(window(), newState);
1494             m_lastWindowStateEvent = newState;
1495         }
1496     }
1497 }
1498
1499 void QXcbWindow::handleFocusInEvent(const xcb_focus_in_event_t *)
1500 {
1501     QWindowSystemInterface::handleWindowActivated(window());
1502 }
1503
1504 static bool focusInPeeker(xcb_generic_event_t *event)
1505 {
1506     if (!event) {
1507         // FocusIn event is not in the queue, proceed with FocusOut normally.
1508         QWindowSystemInterface::handleWindowActivated(0);
1509         return true;
1510     }
1511     uint response_type = event->response_type & ~0x80;
1512     return response_type == XCB_FOCUS_IN;
1513 }
1514
1515 void QXcbWindow::handleFocusOutEvent(const xcb_focus_out_event_t *)
1516 {
1517     // Do not set the active window to 0 if there is a FocusIn coming.
1518     // There is however no equivalent for XPutBackEvent so register a
1519     // callback for QXcbConnection instead.
1520     connection()->addPeekFunc(focusInPeeker);
1521 }
1522
1523 void QXcbWindow::updateSyncRequestCounter()
1524 {
1525     if (m_screen->syncRequestSupported() && (m_syncValue.lo != 0 || m_syncValue.hi != 0)) {
1526         Q_XCB_CALL(xcb_sync_set_counter(xcb_connection(), m_syncCounter, m_syncValue));
1527         xcb_flush(xcb_connection());
1528         connection()->sync();
1529
1530         m_syncValue.lo = 0;
1531         m_syncValue.hi = 0;
1532     }
1533 }
1534
1535 bool QXcbWindow::setKeyboardGrabEnabled(bool grab)
1536 {
1537     if (!grab) {
1538         xcb_ungrab_keyboard(xcb_connection(), XCB_TIME_CURRENT_TIME);
1539         return true;
1540     }
1541     xcb_grab_keyboard_cookie_t cookie = xcb_grab_keyboard(xcb_connection(), false,
1542                                                           m_window, XCB_TIME_CURRENT_TIME,
1543                                                           XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
1544     xcb_grab_keyboard_reply_t *reply = xcb_grab_keyboard_reply(xcb_connection(), cookie, NULL);
1545     bool result = !(!reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1546     free(reply);
1547     return result;
1548 }
1549
1550 bool QXcbWindow::setMouseGrabEnabled(bool grab)
1551 {
1552     if (!grab) {
1553         xcb_ungrab_pointer(xcb_connection(), XCB_TIME_CURRENT_TIME);
1554         return true;
1555     }
1556     xcb_grab_pointer_cookie_t cookie = xcb_grab_pointer(xcb_connection(), false, m_window,
1557                                                         (XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE
1558                                                          | XCB_EVENT_MASK_BUTTON_MOTION | XCB_EVENT_MASK_ENTER_WINDOW
1559                                                          | XCB_EVENT_MASK_LEAVE_WINDOW | XCB_EVENT_MASK_POINTER_MOTION),
1560                                                         XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC,
1561                                                         XCB_WINDOW_NONE, XCB_CURSOR_NONE,
1562                                                         XCB_TIME_CURRENT_TIME);
1563     xcb_grab_pointer_reply_t *reply = xcb_grab_pointer_reply(xcb_connection(), cookie, NULL);
1564     bool result = !(!reply || reply->status != XCB_GRAB_STATUS_SUCCESS);
1565     free(reply);
1566     return result;
1567 }
1568
1569 void QXcbWindow::setCursor(xcb_cursor_t cursor)
1570 {
1571     xcb_change_window_attributes(xcb_connection(), m_window, XCB_CW_CURSOR, &cursor);
1572     xcb_flush(xcb_connection());
1573 }
1574
1575 QT_END_NAMESPACE