src/widgets/kernel/qwidget_qpa.cpp

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  22 ** Alternatively, this file may be used under the terms of the GNU General
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  41
  42 #include "QtWidgets/qwidget.h"
  43 #include "QtGui/qevent.h"
  44 #include "QtWidgets/qapplication.h"
  45 #include "private/qwidgetbackingstore_p.h"
  46 #include "private/qwidget_p.h"
  47 #include "private/qwidgetwindow_qpa_p.h"
  48 #include "private/qapplication_p.h"
  49 #include "QtWidgets/qdesktopwidget.h"
  50 #include <qpa/qplatformwindow.h>
  51 #include "QtGui/qsurfaceformat.h"
  52 #include <qpa/qplatformopenglcontext.h>
  53 #include "QtGui/private/qwindow_p.h"
  54
  55 #include <qpa/qplatformcursor.h>
  56 #include <QtGui/QGuiApplication>
  57 #include <QtGui/QScreen>
  58 #include <QtCore/QMargins>
  59
  60 QT_BEGIN_NAMESPACE
  61
  62 void q_createNativeChildrenAndSetParent(QWindow *parentWindow, const QWidget *parentWidget)
  63 {
  64     QObjectList children = parentWidget->children();
  65     for (int i = 0; i < children.size(); i++) {
  66         if (children.at(i)->isWidgetType()) {
  67             const QWidget *childWidget = qobject_cast<const QWidget *>(children.at(i));
  68             if (childWidget) { // should not be necessary
  69                 if (childWidget->testAttribute(Qt::WA_NativeWindow)) {
  70                     if (!childWidget->windowHandle())
  71                         childWidget->winId();
  72                     if (childWidget->windowHandle()) {
  73                         if (childWidget->isTopLevel())
  74                             childWidget->windowHandle()->setTransientParent(parentWindow);
  75                         else
  76                             childWidget->windowHandle()->setParent(parentWindow);
  77                     }
  78                 } else {
  79                     q_createNativeChildrenAndSetParent(parentWindow,childWidget);
  80                 }
  81             }
  82         }
  83     }
  84
  85 }
  86
  87 void QWidgetPrivate::create_sys(WId window, bool initializeWindow, bool destroyOldWindow)
  88 {
  89     Q_Q(QWidget);
  90
  91     Q_UNUSED(window);
  92     Q_UNUSED(initializeWindow);
  93     Q_UNUSED(destroyOldWindow);
  94
  95     Qt::WindowFlags flags = data.window_flags;
  96
  97     if (!q->testAttribute(Qt::WA_NativeWindow) && !q->isWindow())
  98         return; // we only care about real toplevels
  99
 100     QWindow *win = topData()->window;
 101     // topData() ensures the extra is created but does not ensure 'window' is non-null
 102     // in case the extra was already valid.
 103     if (!win) {
 104         createTLSysExtra();
 105         win = topData()->window;
 106     }
 107
 108     win->setWindowFlags(data.window_flags);
 109     fixPosIncludesFrame();
 110     win->setGeometry(q->geometry());
 111     win->setScreen(QGuiApplication::screens().value(topData()->screenIndex, 0));
 112
 113     if (q->testAttribute(Qt::WA_TranslucentBackground)) {
 114         QSurfaceFormat format;
 115         format.setAlphaBufferSize(8);
 116         win->setFormat(format);
 117     }
 118
 119     if (QWidget *nativeParent = q->nativeParentWidget()) {
 120         if (nativeParent->windowHandle()) {
 121             if (flags & Qt::Window) {
 122                 win->setTransientParent(nativeParent->windowHandle());
 123                 win->setParent(0);
 124             } else {
 125                 win->setTransientParent(0);
 126                 win->setParent(nativeParent->windowHandle());
 127             }
 128         }
 129     }
 130
 131     qt_window_private(win)->positionPolicy = topData()->posIncludesFrame ?
 132         QWindowPrivate::WindowFrameInclusive : QWindowPrivate::WindowFrameExclusive;
 133     win->create();
 134
 135     data.window_flags = win->windowFlags();
 136
 137     QBackingStore *store = q->backingStore();
 138
 139     if (!store) {
 140         if (win && q->windowType() != Qt::Desktop)
 141             q->setBackingStore(new QBackingStore(win));
 142         else
 143             q->setAttribute(Qt::WA_PaintOnScreen, true);
 144     }
 145
 146     setWindowModified_helper();
 147     setWinId(win->winId());
 148
 149     // Check children and create windows for them if necessary
 150     q_createNativeChildrenAndSetParent(q->windowHandle(), q);
 151
 152     // If widget is already shown, set window visible, too
 153     if (q->isVisible())
 154         win->setVisible(true);
 155 }
 156
 157 void QWidget::destroy(bool destroyWindow, bool destroySubWindows)
 158 {
 159     Q_D(QWidget);
 160
 161     d->aboutToDestroy();
 162     if (!isWindow() && parentWidget())
 163         parentWidget()->d_func()->invalidateBuffer(d->effectiveRectFor(geometry()));
 164     d->deactivateWidgetCleanup();
 165
 166     if ((windowType() == Qt::Popup))
 167         qApp->d_func()->closePopup(this);
 168
 169     if (this == QApplicationPrivate::active_window)
 170         QApplication::setActiveWindow(0);
 171
 172     setAttribute(Qt::WA_WState_Created, false);
 173
 174     if (windowType() != Qt::Desktop) {
 175         if (destroySubWindows) {
 176             QObjectList childList(children());
 177             for (int i = 0; i < childList.size(); i++) {
 178                 QWidget *widget = qobject_cast<QWidget *>(childList.at(i));
 179                 if (widget && widget->testAttribute(Qt::WA_NativeWindow)) {
 180                     if (widget->windowHandle()) {
 181                         widget->destroy();
 182                     }
 183                 }
 184             }
 185         }
 186         if (destroyWindow) {
 187             d->deleteTLSysExtra();
 188         } else {
 189             if (parentWidget() && parentWidget()->testAttribute(Qt::WA_WState_Created)) {
 190                 d->hide_sys();
 191             }
 192         }
 193
 194         d->setWinId(0);
 195     }
 196 }
 197
 198 void QWidgetPrivate::setParent_sys(QWidget *newparent, Qt::WindowFlags f)
 199 {
 200     Q_Q(QWidget);
 201
 202     Qt::WindowFlags oldFlags = data.window_flags;
 203     bool wasCreated = q->testAttribute(Qt::WA_WState_Created);
 204
 205     int targetScreen = -1;
 206     // Handle a request to move the widget to a particular screen
 207     if (newparent && newparent->windowType() == Qt::Desktop) {
 208         // make sure the widget is created on the same screen as the
 209         // programmer specified desktop widget
 210
 211         // get the desktop's screen number
 212         targetScreen = newparent->window()->d_func()->topData()->screenIndex;
 213         newparent = 0;
 214     }
 215
 216     setWinId(0);
 217
 218     if (parent != newparent) {
 219         QObjectPrivate::setParent_helper(newparent); //### why does this have to be done in the _sys function???
 220         if (q->windowHandle()) {
 221             q->windowHandle()->setWindowFlags(f);
 222             QWidget *parentWithWindow =
 223                 newparent ? (newparent->windowHandle() ? newparent : newparent->nativeParentWidget()) : 0;
 224             if (parentWithWindow) {
 225                 if (f & Qt::Window) {
 226                     q->windowHandle()->setTransientParent(parentWithWindow->windowHandle());
 227                     q->windowHandle()->setParent(0);
 228                 } else {
 229                     q->windowHandle()->setTransientParent(0);
 230                     q->windowHandle()->setParent(parentWithWindow->windowHandle());
 231                 }
 232             } else {
 233                 q->windowHandle()->setTransientParent(0);
 234                 q->windowHandle()->setParent(0);
 235             }
 236         }
 237     }
 238
 239     if (!newparent) {
 240         f |= Qt::Window;
 241         if (targetScreen == -1) {
 242             if (parent)
 243                 targetScreen = q->parentWidget()->window()->d_func()->topData()->screenIndex;
 244         }
 245     }
 246
 247     bool explicitlyHidden = q->testAttribute(Qt::WA_WState_Hidden) && q->testAttribute(Qt::WA_WState_ExplicitShowHide);
 248
 249     // Reparenting toplevel to child
 250     if (!(f&Qt::Window) && (oldFlags&Qt::Window) && !q->testAttribute(Qt::WA_NativeWindow)) {
 251         //qDebug() << "setParent_sys() change from toplevel";
 252         q->destroy();
 253     } else if (newparent && wasCreated) {
 254         q->createWinId();
 255     }
 256
 257     adjustFlags(f, q);
 258     data.window_flags = f;
 259     q->setAttribute(Qt::WA_WState_Created, false);
 260     q->setAttribute(Qt::WA_WState_Visible, false);
 261     q->setAttribute(Qt::WA_WState_Hidden, false);
 262
 263     if (q->isWindow() || (!newparent || newparent->isVisible()) || explicitlyHidden)
 264         q->setAttribute(Qt::WA_WState_Hidden);
 265     q->setAttribute(Qt::WA_WState_ExplicitShowHide, explicitlyHidden);
 266
 267     // move the window to the selected screen
 268     if (!newparent && targetScreen != -1) {
 269         if (maybeTopData())
 270             maybeTopData()->screenIndex = targetScreen;
 271         // only if it is already created
 272         if (q->testAttribute(Qt::WA_WState_Created)) {
 273             q->windowHandle()->setScreen(QGuiApplication::screens().value(targetScreen, 0));
 274         }
 275     }
 276 }
 277
 278 QPoint QWidget::mapToGlobal(const QPoint &pos) const
 279 {
 280     int x = pos.x(), y = pos.y();
 281     const QWidget *w = this;
 282     while (w) {
 283         x += w->data->crect.x();
 284         y += w->data->crect.y();
 285         w = w->isWindow() ? 0 : w->parentWidget();
 286     }
 287     return QPoint(x, y);
 288 }
 289
 290 QPoint QWidget::mapFromGlobal(const QPoint &pos) const
 291 {
 292     int x = pos.x(), y = pos.y();
 293     const QWidget *w = this;
 294     while (w) {
 295         x -= w->data->crect.x();
 296         y -= w->data->crect.y();
 297         w = w->isWindow() ? 0 : w->parentWidget();
 298     }
 299     return QPoint(x, y);
 300 }
 301
 302 void QWidgetPrivate::updateSystemBackground() {}
 303
 304 #ifndef QT_NO_CURSOR
 305 void QWidgetPrivate::setCursor_sys(const QCursor &cursor)
 306 {
 307     Q_UNUSED(cursor);
 308     Q_Q(QWidget);
 309     qt_qpa_set_cursor(q, false);
 310 }
 311
 312 void QWidgetPrivate::unsetCursor_sys()
 313 {
 314     Q_Q(QWidget);
 315     qt_qpa_set_cursor(q, false);
 316 }
 317
 318 #endif //QT_NO_CURSOR
 319
 320 void QWidgetPrivate::setWindowTitle_sys(const QString &caption)
 321 {
 322     Q_Q(QWidget);
 323     if (!q->isWindow())
 324         return;
 325
 326     if (QWindow *window = q->windowHandle())
 327         window->setWindowTitle(caption);
 328
 329 }
 330
 331 void QWidgetPrivate::setWindowIcon_sys(bool /*forceReset*/)
 332 {
 333 }
 334
 335 void QWidgetPrivate::setWindowIconText_sys(const QString &iconText)
 336 {
 337     Q_UNUSED(iconText);
 338 }
 339
 340 QWidget *qt_pressGrab = 0;
 341 QWidget *qt_mouseGrb = 0;
 342 static QWidget *keyboardGrb = 0;
 343
 344 void QWidget::grabMouse()
 345 {
 346     if (qt_mouseGrb)
 347         qt_mouseGrb->releaseMouse();
 348
 349     if (windowHandle())
 350         windowHandle()->setMouseGrabEnabled(true);
 351
 352     qt_mouseGrb = this;
 353     qt_pressGrab = 0;
 354 }
 355
 356 #ifndef QT_NO_CURSOR
 357 void QWidget::grabMouse(const QCursor &cursor)
 358 {
 359     Q_UNUSED(cursor);
 360
 361     if (qt_mouseGrb)
 362         qt_mouseGrb->releaseMouse();
 363
 364     if (windowHandle())
 365         windowHandle()->setMouseGrabEnabled(true);
 366
 367     qt_mouseGrb = this;
 368     qt_pressGrab = 0;
 369 }
 370 #endif
 371
 372 bool QWidgetPrivate::stealMouseGrab(bool grab)
 373 {
 374     // This is like a combination of grab/releaseMouse() but with error checking
 375     // and it has no effect on the result of mouseGrabber().
 376     Q_Q(QWidget);
 377     return q->windowHandle() ? q->windowHandle()->setMouseGrabEnabled(grab) : false;
 378 }
 379
 380 void QWidget::releaseMouse()
 381 {
 382     if (qt_mouseGrb == this) {
 383         if (windowHandle())
 384             windowHandle()->setMouseGrabEnabled(false);
 385         qt_mouseGrb = 0;
 386     }
 387 }
 388
 389 void QWidget::grabKeyboard()
 390 {
 391     if (keyboardGrb)
 392         keyboardGrb->releaseKeyboard();
 393     if (windowHandle())
 394         windowHandle()->setKeyboardGrabEnabled(true);
 395     keyboardGrb = this;
 396 }
 397
 398 bool QWidgetPrivate::stealKeyboardGrab(bool grab)
 399 {
 400     // This is like a combination of grab/releaseKeyboard() but with error
 401     // checking and it has no effect on the result of keyboardGrabber().
 402     Q_Q(QWidget);
 403     return q->windowHandle() ? q->windowHandle()->setKeyboardGrabEnabled(grab) : false;
 404 }
 405
 406 void QWidget::releaseKeyboard()
 407 {
 408     if (keyboardGrb == this) {
 409         if (windowHandle())
 410             windowHandle()->setKeyboardGrabEnabled(false);
 411         keyboardGrb = 0;
 412     }
 413 }
 414
 415 QWidget *QWidget::mouseGrabber()
 416 {
 417     if (qt_mouseGrb)
 418         return qt_mouseGrb;
 419     return qt_pressGrab;
 420 }
 421
 422 QWidget *QWidget::keyboardGrabber()
 423 {
 424     return keyboardGrb;
 425 }
 426
 427 void QWidget::activateWindow()
 428 {
 429     if (windowHandle())
 430         windowHandle()->requestActivateWindow();
 431 }
 432
 433 // Position top level windows at the center, avoid showing
 434 // Windows at the default 0,0 position excluding the frame.
 435 static inline QRect positionTopLevelWindow(QRect geometry, const QScreen *screen)
 436 {
 437     if (screen && geometry.x() == 0 && geometry.y() == 0) {
 438        const QRect availableGeometry = screen->availableGeometry();
 439         if (availableGeometry.width() > geometry.width()
 440             && availableGeometry.height() > geometry.height())
 441             geometry.moveCenter(availableGeometry.center());
 442     }
 443     return geometry;
 444 }
 445
 446 // move() was invoked with Qt::WA_WState_Created not set (frame geometry
 447 // unknown), that is, crect has a position including the frame.
 448 // If we can determine the frame strut, fix that and clear the flag.
 449 void QWidgetPrivate::fixPosIncludesFrame()
 450 {
 451     Q_Q(QWidget);
 452     if (QTLWExtra *te = maybeTopData()) {
 453         if (te->posIncludesFrame) {
 454             // For Qt::WA_DontShowOnScreen, assume a frame of 0 (for
 455             // example, in QGraphicsProxyWidget).
 456             if (q->testAttribute(Qt::WA_DontShowOnScreen)) {
 457                 te->posIncludesFrame = 0;
 458             } else {
 459                 if (q->windowHandle()) {
 460                     updateFrameStrut();
 461                     if (!q->data->fstrut_dirty) {
 462                         data.crect.translate(te->frameStrut.x(), te->frameStrut.y());
 463                         te->posIncludesFrame = 0;
 464                     }
 465                 } // windowHandle()
 466             } // !WA_DontShowOnScreen
 467         } // posIncludesFrame
 468     } // QTLWExtra
 469 }
 470
 471 void QWidgetPrivate::show_sys()
 472 {
 473     Q_Q(QWidget);
 474
 475     QWindow *window = q->windowHandle();
 476
 477     if (q->testAttribute(Qt::WA_DontShowOnScreen)) {
 478         invalidateBuffer(q->rect());
 479         q->setAttribute(Qt::WA_Mapped);
 480         if (q->isWindow() && q->windowModality() != Qt::NonModal && window) {
 481             // add our window to the modal window list
 482             QGuiApplicationPrivate::showModalWindow(window);
 483         }
 484         return;
 485     }
 486
 487     QApplication::postEvent(q, new QUpdateLaterEvent(q->rect()));
 488
 489     if (!q->isWindow() && !q->testAttribute(Qt::WA_NativeWindow))
 490         return;
 491
 492     if (window) {
 493         if (q->isWindow())
 494             fixPosIncludesFrame();
 495         QRect geomRect = q->geometry();
 496         if (q->isWindow()) {
 497             if (!q->testAttribute(Qt::WA_Moved))
 498                 geomRect = positionTopLevelWindow(geomRect, window->screen());
 499         } else {
 500             QPoint topLeftOfWindow = q->mapTo(q->nativeParentWidget(),QPoint());
 501             geomRect.moveTopLeft(topLeftOfWindow);
 502         }
 503         const QRect windowRect = window->geometry();
 504         if (windowRect != geomRect) {
 505             window->setGeometry(geomRect);
 506         }
 507
 508         if (QBackingStore *store = q->backingStore()) {
 509             if (store->size() != geomRect.size()) {
 510                 store->resize(geomRect.size());
 511             }
 512         }
 513
 514         invalidateBuffer(q->rect());
 515         window->setVisible(true);
 516     }
 517 }
 518
 519
 520 void QWidgetPrivate::hide_sys()
 521 {
 522     Q_Q(QWidget);
 523
 524     QWindow *window = q->windowHandle();
 525
 526     if (q->testAttribute(Qt::WA_DontShowOnScreen)) {
 527         q->setAttribute(Qt::WA_Mapped, false);
 528         if (q->isWindow() && q->windowModality() != Qt::NonModal && window) {
 529             // remove our window from the modal window list
 530             QGuiApplicationPrivate::hideModalWindow(window);
 531         }
 532         // do not return here, if window non-zero, we must hide it
 533     }
 534
 535     deactivateWidgetCleanup();
 536
 537     if (!q->isWindow()) {
 538         QWidget *p = q->parentWidget();
 539         if (p &&p->isVisible()) {
 540             invalidateBuffer(q->rect());
 541         }
 542         return;
 543     }
 544
 545     invalidateBuffer(q->rect());
 546
 547     if (window)
 548         window->setVisible(false);
 549 }
 550
 551 void QWidgetPrivate::setMaxWindowState_helper()
 552 {
 553     Q_Q(QWidget);
 554
 555     const uint old_state = data.in_set_window_state;
 556     data.in_set_window_state = 1;
 557
 558     const QRect desktop = qApp->desktop()->availableGeometry(qApp->desktop()->screenNumber(q));
 559     q->setGeometry(desktop);
 560
 561     data.in_set_window_state = old_state;
 562 }
 563
 564 void QWidgetPrivate::setFullScreenSize_helper()
 565 {
 566     Q_Q(QWidget);
 567
 568     const uint old_state = data.in_set_window_state;
 569     data.in_set_window_state = 1;
 570
 571     const QRect screen = qApp->desktop()->screenGeometry(qApp->desktop()->screenNumber(q));
 572     q->move(screen.topLeft());
 573     q->resize(screen.size());
 574
 575     data.in_set_window_state = old_state;
 576 }
 577
 578 Qt::WindowState effectiveState(Qt::WindowStates state)
 579  {
 580      if (state & Qt::WindowMinimized)
 581          return Qt::WindowMinimized;
 582      else if (state & Qt::WindowFullScreen)
 583          return Qt::WindowFullScreen;
 584      else if (state & Qt::WindowMaximized)
 585          return Qt::WindowMaximized;
 586      return Qt::WindowNoState;
 587  }
 588
 589 void QWidget::setWindowState(Qt::WindowStates newstate)
 590 {
 591     Q_D(QWidget);
 592     Qt::WindowStates oldstate = windowState();
 593     if (oldstate == newstate)
 594         return;
 595     if (isWindow() && !testAttribute(Qt::WA_WState_Created))
 596         create();
 597
 598     data->window_state = newstate;
 599     data->in_set_window_state = 1;
 600     bool needShow = false;
 601     Qt::WindowState newEffectiveState = effectiveState(newstate);
 602     Qt::WindowState oldEffectiveState = effectiveState(oldstate);
 603     if (isWindow() && newEffectiveState != oldEffectiveState) {
 604         d->createTLExtra();
 605         if (oldEffectiveState == Qt::WindowNoState)
 606             d->topData()->normalGeometry = geometry();
 607
 608         Q_ASSERT(windowHandle());
 609         windowHandle()->setWindowState(newEffectiveState);
 610         bool supported = windowHandle()->windowState() == newEffectiveState;
 611
 612         if (!supported) {
 613             // undo the effects of the old emulated state
 614             if (oldEffectiveState == Qt::WindowFullScreen) {
 615                 setParent(0, d->topData()->savedFlags);
 616                 needShow = true;
 617             } else if (oldEffectiveState == Qt::WindowMinimized) {
 618                 needShow = true;
 619             }
 620
 621             // emulate the new window state
 622             if (newEffectiveState == Qt::WindowMinimized) {
 623                 //### not ideal...
 624                 hide();
 625                 needShow = false;
 626             } else if (newEffectiveState == Qt::WindowFullScreen) {
 627                 d->topData()->savedFlags = windowFlags();
 628                 setParent(0, Qt::FramelessWindowHint | (windowFlags() & Qt::WindowStaysOnTopHint));
 629                 d->setFullScreenSize_helper();
 630                 raise();
 631                 needShow = true;
 632             } else if (newEffectiveState == Qt::WindowMaximized) {
 633                 createWinId();
 634                 d->setMaxWindowState_helper();
 635             } else if (newEffectiveState == Qt::WindowNoState) {
 636                 // reset old geometry
 637                 QRect r = d->topData()->normalGeometry;
 638                 if (r.width() >= 0) {
 639                     d->topData()->normalGeometry = QRect(0,0,-1,-1);
 640                     setGeometry(r);
 641                 }
 642             }
 643         }
 644     }
 645     data->in_set_window_state = 0;
 646
 647     if (needShow)
 648         show();
 649
 650     if (newstate & Qt::WindowActive)
 651         activateWindow();
 652
 653     QWindowStateChangeEvent e(oldstate);
 654     QApplication::sendEvent(this, &e);
 655 }
 656
 657 void QWidgetPrivate::setFocus_sys()
 658 {
 659
 660 }
 661
 662 void QWidgetPrivate::raise_sys()
 663 {
 664     Q_Q(QWidget);
 665     if (q->isWindow()) {
 666         q->windowHandle()->raise();
 667     }
 668 }
 669
 670 void QWidgetPrivate::lower_sys()
 671 {
 672     Q_Q(QWidget);
 673     if (q->isWindow()) {
 674         Q_ASSERT(q->testAttribute(Qt::WA_WState_Created));
 675         q->windowHandle()->lower();
 676     } else if (QWidget *p = q->parentWidget()) {
 677         setDirtyOpaqueRegion();
 678         p->d_func()->invalidateBuffer(effectiveRectFor(q->geometry()));
 679     }
 680 }
 681
 682 void QWidgetPrivate::stackUnder_sys(QWidget*)
 683 {
 684     Q_Q(QWidget);
 685     if (QWidget *p = q->parentWidget()) {
 686         setDirtyOpaqueRegion();
 687         p->d_func()->invalidateBuffer(effectiveRectFor(q->geometry()));
 688     }
 689 }
 690
 691 void QWidgetPrivate::setGeometry_sys(int x, int y, int w, int h, bool isMove)
 692 {
 693     Q_Q(QWidget);
 694     if (extra) {                                // any size restrictions?
 695         w = qMin(w,extra->maxw);
 696         h = qMin(h,extra->maxh);
 697         w = qMax(w,extra->minw);
 698         h = qMax(h,extra->minh);
 699     }
 700
 701     QPoint oldp = q->geometry().topLeft();
 702     QSize olds = q->size();
 703     QRect r(x, y, w, h);
 704
 705     bool isResize = olds != r.size();
 706     isMove = oldp != r.topLeft(); //### why do we have isMove as a parameter?
 707
 708
 709     // We only care about stuff that changes the geometry, or may
 710     // cause the window manager to change its state
 711     if (r.size() == olds && oldp == r.topLeft())
 712         return;
 713
 714     if (!data.in_set_window_state) {
 715         q->data->window_state &= ~Qt::WindowMaximized;
 716         q->data->window_state &= ~Qt::WindowFullScreen;
 717         if (q->isWindow())
 718             topData()->normalGeometry = QRect(0, 0, -1, -1);
 719     }
 720
 721     QPoint oldPos = q->pos();
 722     data.crect = r;
 723
 724     bool needsShow = false;
 725
 726     if (w == 0 || h == 0) {
 727         q->setAttribute(Qt::WA_OutsideWSRange, true);
 728         if (q->isVisible() && q->testAttribute(Qt::WA_Mapped))
 729             hide_sys();
 730         data.crect = QRect(x, y, w, h);
 731     } else if (q->isVisible() && q->testAttribute(Qt::WA_OutsideWSRange)) {
 732         q->setAttribute(Qt::WA_OutsideWSRange, false);
 733         needsShow = true;
 734     }
 735
 736     if (q->isVisible()) {
 737         if (!q->testAttribute(Qt::WA_DontShowOnScreen) && !q->testAttribute(Qt::WA_OutsideWSRange)) {
 738             if (q->windowHandle()) {
 739                 if (q->isWindow()) {
 740                     q->windowHandle()->setGeometry(q->geometry());
 741                 } else {
 742                     QPoint posInNativeParent =  q->mapTo(q->nativeParentWidget(),QPoint());
 743                     q->windowHandle()->setGeometry(QRect(posInNativeParent,r.size()));
 744                 }
 745                 const QWidgetBackingStore *bs = maybeBackingStore();
 746                 if (bs->store) {
 747                     if (isResize)
 748                         bs->store->resize(r.size());
 749                 }
 750
 751                 if (needsShow)
 752                     show_sys();
 753             } else {
 754                 if (isMove && !isResize)
 755                     moveRect(QRect(oldPos, olds), x - oldPos.x(), y - oldPos.y());
 756                 else
 757                     invalidateBuffer_resizeHelper(oldPos, olds);
 758             }
 759         }
 760
 761         if (isMove) {
 762             QMoveEvent e(q->pos(), oldPos);
 763             QApplication::sendEvent(q, &e);
 764         }
 765         if (isResize) {
 766             QResizeEvent e(r.size(), olds);
 767             QApplication::sendEvent(q, &e);
 768             if (q->windowHandle())
 769                 q->update();
 770         }
 771     } else { // not visible
 772         if (isMove && q->pos() != oldPos)
 773             q->setAttribute(Qt::WA_PendingMoveEvent, true);
 774         if (isResize)
 775             q->setAttribute(Qt::WA_PendingResizeEvent, true);
 776     }
 777
 778 }
 779
 780 void QWidgetPrivate::setConstraints_sys()
 781 {
 782     Q_Q(QWidget);
 783     if (extra && q->windowHandle()) {
 784         QWindow *win = q->windowHandle();
 785         QWindowPrivate *winp = qt_window_private(win);
 786
 787         winp->minimumSize = QSize(extra->minw, extra->minh);
 788         winp->maximumSize = QSize(extra->maxw, extra->maxh);
 789
 790         if (extra->topextra) {
 791             winp->baseSize = QSize(extra->topextra->basew, extra->topextra->baseh);
 792             winp->sizeIncrement = QSize(extra->topextra->incw, extra->topextra->inch);
 793         }
 794
 795         if (winp->platformWindow) {
 796             fixPosIncludesFrame();
 797             winp->platformWindow->propagateSizeHints();
 798         }
 799     }
 800 }
 801
 802 void QWidgetPrivate::scroll_sys(int dx, int dy)
 803 {
 804     Q_Q(QWidget);
 805     scrollChildren(dx, dy);
 806     scrollRect(q->rect(), dx, dy);
 807 }
 808
 809 void QWidgetPrivate::scroll_sys(int dx, int dy, const QRect &r)
 810 {
 811     scrollRect(r, dx, dy);
 812 }
 813
 814 int QWidget::metric(PaintDeviceMetric m) const
 815 {
 816     Q_D(const QWidget);
 817
 818     QScreen *screen = 0;
 819     if (QWidget *topLevel = window())
 820         if (QWindow *topLevelWindow = topLevel->windowHandle()) {
 821             QPlatformScreen *platformScreen = QPlatformScreen::platformScreenForWindow(topLevelWindow);
 822             if (platformScreen)
 823                 screen = platformScreen->screen();
 824         }
 825     if (!screen && QGuiApplication::primaryScreen())
 826         screen = QGuiApplication::primaryScreen();
 827
 828     if (!screen) {
 829         if (m == PdmDpiX || m == PdmDpiY)
 830               return 72;
 831         return QPaintDevice::metric(m);
 832     }
 833     int val;
 834     if (m == PdmWidth) {
 835         val = data->crect.width();
 836     } else if (m == PdmWidthMM) {
 837         val = data->crect.width() * screen->physicalSize().width() / screen->geometry().width();
 838     } else if (m == PdmHeight) {
 839         val = data->crect.height();
 840     } else if (m == PdmHeightMM) {
 841         val = data->crect.height() * screen->physicalSize().height() / screen->geometry().height();
 842     } else if (m == PdmDepth) {
 843         return screen->depth();
 844     } else if (m == PdmDpiX) {
 845         if (d->extra && d->extra->customDpiX)
 846             return d->extra->customDpiX;
 847         else if (d->parent)
 848             return static_cast<QWidget *>(d->parent)->metric(m);
 849         return qRound(screen->logicalDotsPerInchX());
 850     } else if (m == PdmDpiY) {
 851         if (d->extra && d->extra->customDpiY)
 852             return d->extra->customDpiY;
 853         else if (d->parent)
 854             return static_cast<QWidget *>(d->parent)->metric(m);
 855         return qRound(screen->logicalDotsPerInchY());
 856     } else if (m == PdmPhysicalDpiX) {
 857         return qRound(screen->physicalDotsPerInchX());
 858     } else if (m == PdmPhysicalDpiY) {
 859         return qRound(screen->physicalDotsPerInchY());
 860     } else {
 861         val = QPaintDevice::metric(m);// XXX
 862     }
 863     return val;
 864 }
 865
 866 /*!
 867     \preliminary
 868
 869     Returns the QPlatformWindow this widget will be drawn into.
 870 */
 871 QWindow *QWidget::windowHandle() const
 872 {
 873     Q_D(const QWidget);
 874     QTLWExtra *extra = d->maybeTopData();
 875     if (extra)
 876         return extra->window;
 877
 878     return 0;
 879 }
 880
 881 void QWidgetPrivate::createSysExtra()
 882 {
 883 }
 884
 885 void QWidgetPrivate::deleteSysExtra()
 886 {
 887
 888 }
 889
 890 void QWidgetPrivate::createTLSysExtra()
 891 {
 892     Q_Q(QWidget);
 893     extra->topextra->screenIndex = 0;
 894     extra->topextra->window = 0;
 895     if (q->testAttribute(Qt::WA_NativeWindow) || q->isWindow())
 896         extra->topextra->window = new QWidgetWindow(q);
 897 }
 898
 899 void QWidgetPrivate::deleteTLSysExtra()
 900 {
 901     if (extra && extra->topextra) {
 902         //the toplevel might have a context with a "qglcontext associated with it. We need to
 903         //delete the qglcontext before we delete the qplatformopenglcontext.
 904         //One unfortunate thing about this is that we potentially create a glContext just to
 905         //delete it straight afterwards.
 906         if (extra->topextra->window) {
 907             extra->topextra->window->destroy();
 908         }
 909         setWinId(0);
 910         //hmmm. should we delete window..
 911         delete extra->topextra->window;
 912         extra->topextra->window = 0;
 913     }
 914 }
 915
 916 void QWidgetPrivate::registerDropSite(bool on)
 917 {
 918     Q_UNUSED(on);
 919 }
 920
 921 void QWidgetPrivate::setMask_sys(const QRegion &region)
 922 {
 923     Q_UNUSED(region);
 924     // XXX
 925 }
 926
 927 void QWidgetPrivate::updateFrameStrut()
 928 {
 929     Q_Q(QWidget);
 930     if (q->data->fstrut_dirty) {
 931         if (QTLWExtra *te = maybeTopData()) {
 932             if (te->window) {
 933                 if (const QPlatformWindow *pw = te->window->handle()) {
 934                     const QMargins margins = pw->frameMargins();
 935                     if (!margins.isNull()) {
 936                         te->frameStrut.setCoords(margins.left(), margins.top(), margins.right(), margins.bottom());
 937                         q->data->fstrut_dirty = false;
 938                     }
 939                 }
 940             }
 941         }
 942     }
 943 }
 944
 945 void QWidgetPrivate::setWindowOpacity_sys(qreal level)
 946 {
 947     Q_Q(QWidget);
 948     if (q->windowHandle())
 949         q->windowHandle()->setOpacity(level);
 950 }
 951
 952 void QWidgetPrivate::setWSGeometry(bool dontShow, const QRect &oldRect)
 953 {
 954     Q_UNUSED(dontShow);
 955     Q_UNUSED(oldRect);
 956     // XXX
 957 }
 958
 959 QPaintEngine *QWidget::paintEngine() const
 960 {
 961     qWarning("QWidget::paintEngine: Should no longer be called");
 962     return 0; //##### @@@
 963 }
 964
 965 void QWidgetPrivate::setModal_sys()
 966 {
 967     Q_Q(QWidget);
 968     if (q->windowHandle())
 969         q->windowHandle()->setWindowModality(q->windowModality());
 970 }
 971
 972 #ifndef QT_NO_CURSOR
 973 static inline void applyCursor(QWidget *w, QCursor c)
 974 {
 975     if (QWindow *window = w->windowHandle())
 976         if (const QScreen *screen = window->screen())
 977             if (QPlatformCursor *cursor = screen->handle()->cursor())
 978                 cursor->changeCursor(&c, window);
 979 }
 980
 981 void qt_qpa_set_cursor(QWidget *w, bool force)
 982 {
 983     if (!w->testAttribute(Qt::WA_WState_Created))
 984         return;
 985
 986     static QPointer<QWidget> lastUnderMouse = 0;
 987     if (force) {
 988         lastUnderMouse = w;
 989     } else if (lastUnderMouse && lastUnderMouse->effectiveWinId() == w->effectiveWinId()) {
 990         w = lastUnderMouse;
 991     } else if (!w->internalWinId()) {
 992         return; // The mouse is not under this widget, and it's not native, so don't change it.
 993     }
 994
 995     while (!w->internalWinId() && w->parentWidget() && !w->isWindow()
 996            && !w->testAttribute(Qt::WA_SetCursor))
 997         w = w->parentWidget();
 998
 999     QWidget *nativeParent = w;
1000     if (!w->internalWinId())
1001         nativeParent = w->nativeParentWidget();
1002     if (!nativeParent || !nativeParent->internalWinId())
1003         return;
1004
1005     if (w->isWindow() || w->testAttribute(Qt::WA_SetCursor)) {
1006         QCursor *oc = QApplication::overrideCursor();
1007         if (oc)
1008             applyCursor(nativeParent, *oc);
1009         else if (w->isEnabled())
1010             applyCursor(nativeParent, w->cursor());
1011         else
1012             // Enforce the windows behavior of clearing the cursor on
1013             // disabled widgets.
1014             applyCursor(nativeParent, Qt::ArrowCursor);
1015     } else {
1016         applyCursor(nativeParent, Qt::ArrowCursor);
1017     }
1018 }
1019 #endif //QT_NO_CURSOR
1020
1021 QT_END_NAMESPACE