src/plugins/platforms/xcb/qxcbwindow.cpp

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