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