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