qlayoutitem.cpp

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5 ** -

6 ** This file is part of the QtWidgets module of the Qt Toolkit. -

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36 ** $QT_END_LICENSE$ -

37 ** -

38 ****************************************************************************/ -

39 -

40 #include "qlayout.h" -

41 -

42 #include "qapplication.h" -

43 #include "qlayoutengine_p.h" -

44 #include "qmenubar.h" -

45 #include "qtoolbar.h" -

46 #include "qevent.h" -

47 #include "qstyle.h" -

48 #include "qvariant.h" -

49 #include "qwidget_p.h" -

50 -

51 QT_BEGIN_NAMESPACE -

52 -

53 inline static QRect fromLayoutItemRect(QWidgetPrivate *priv, const QRect &rect) -

54 { -

return rect.adjusted(priv->leftLayoutItemMargin, priv->topLayoutItemMargin,

never executed:

return rect.adjusted(priv->leftLayoutItemMargin, priv->topLayoutItemMargin, -priv->rightLayoutItemMargin, -priv->bottomLayoutItemMargin);

-priv->rightLayoutItemMargin, -priv->bottomLayoutItemMargin);

never executed:

return rect.adjusted(priv->leftLayoutItemMargin, priv->topLayoutItemMargin, -priv->rightLayoutItemMargin, -priv->bottomLayoutItemMargin);

57 } -

58 -

59 inline static QSize fromLayoutItemSize(QWidgetPrivate *priv, const QSize &size) -

60 { -

return fromLayoutItemRect(priv, QRect(QPoint(0, 0), size)).size();

never executed: return fromLayoutItemRect(priv, QRect(QPoint(0, 0), size)).size();

62 } -

63 -

64 inline static QRect toLayoutItemRect(QWidgetPrivate *priv, const QRect &rect) -

65 { -

return rect.adjusted(-priv->leftLayoutItemMargin, -priv->topLayoutItemMargin,

never executed:

return rect.adjusted(-priv->leftLayoutItemMargin, -priv->topLayoutItemMargin, priv->rightLayoutItemMargin, priv->bottomLayoutItemMargin);

priv->rightLayoutItemMargin, priv->bottomLayoutItemMargin);

never executed:

return rect.adjusted(-priv->leftLayoutItemMargin, -priv->topLayoutItemMargin, priv->rightLayoutItemMargin, priv->bottomLayoutItemMargin);

68 } -

69 -

70 inline static QSize toLayoutItemSize(QWidgetPrivate *priv, const QSize &size) -

71 { -

return toLayoutItemRect(priv, QRect(QPoint(0, 0), size)).size();

never executed: return toLayoutItemRect(priv, QRect(QPoint(0, 0), size)).size();

73 } -

74 -

75 /*! -

76 \class QLayoutItem -

77 \brief The QLayoutItem class provides an abstract item that a -

78 QLayout manipulates. -

79 -

80 \ingroup geomanagement -

81 \inmodule QtWidgets -

82 -

83 This is used by custom layouts. -

84 -

85 Pure virtual functions are provided to return information about -

86 the layout, including, sizeHint(), minimumSize(), maximumSize() -

87 and expanding(). -

88 -

89 The layout's geometry can be set and retrieved with setGeometry() -

90 and geometry(), and its alignment with setAlignment() and -

91 alignment(). -

92 -

93 isEmpty() returns whether the layout item is empty. If the -

94 concrete item is a QWidget, it can be retrieved using widget(). -

95 Similarly for layout() and spacerItem(). -

96 -

97 Some layouts have width and height interdependencies. These can -

98 be expressed using hasHeightForWidth(), heightForWidth(), and -

99 minimumHeightForWidth(). For more explanation see the \e{Qt -

100 Quarterly} article -

101 \l{http://doc.qt.io/archives/qq/qq04-height-for-width.html}{Trading -

102 Height for Width}. -

103 -

104 \sa QLayout -

105 */ -

106 -

107 /*! -

108 \class QSpacerItem -

109 \ingroup geomanagement -

110 \brief The QSpacerItem class provides blank space in a layout. -

111 -

112 \inmodule QtWidgets -

113 -

114 Normally, you don't need to use this class directly. Qt's -

115 built-in layout managers provide the following functions for -

116 manipulating empty space in layouts: -

117 -

118 \table -

119 \header \li Class -

120 \li Functions -

121 \row \li QHBoxLayout -

122 \li \l{QBoxLayout::addSpacing()}{addSpacing()}, -

123 \l{QBoxLayout::addStretch()}{addStretch()}, -

124 \l{QBoxLayout::insertSpacing()}{insertSpacing()}, -

125 \l{QBoxLayout::insertStretch()}{insertStretch()} -

126 \row \li QGridLayout -

127 \li \l{QGridLayout::setRowMinimumHeight()}{setRowMinimumHeight()}, -

128 \l{QGridLayout::setRowStretch()}{setRowStretch()}, -

129 \l{QGridLayout::setColumnMinimumWidth()}{setColumnMinimumWidth()}, -

130 \l{QGridLayout::setColumnStretch()}{setColumnStretch()} -

131 \endtable -

132 -

133 \sa QLayout, QWidgetItem, QLayoutItem::spacerItem() -

134 */ -

135 -

136 /*! -

137 \class QWidgetItem -

138 \ingroup geomanagement -

139 \brief The QWidgetItem class is a layout item that represents a widget. -

140 -

141 \inmodule QtWidgets -

142 -

143 Normally, you don't need to use this class directly. Qt's -

144 built-in layout managers provide the following functions for -

145 manipulating widgets in layouts: -

146 -

147 \table -

148 \header \li Class -

149 \li Functions -

150 \row \li QBoxLayout -

151 \li \l{QBoxLayout::addWidget()}{addWidget()}, -

152 \l{QBoxLayout::insertWidget()}{insertWidget()}, -

153 \l{QBoxLayout::setStretchFactor()}{setStretchFactor()} -

154 \row \li QGridLayout -

155 \li \l{QGridLayout::addWidget()}{addWidget()} -

156 \row \li QStackedLayout -

157 \li \l{QStackedLayout::addWidget()}{addWidget()}, -

158 \l{QStackedLayout::insertWidget()}{insertWidget()}, -

159 \l{QStackedLayout::currentWidget()}{currentWidget()}, -

160 \l{QStackedLayout::setCurrentWidget()}{setCurrentWidget()}, -

161 \l{QStackedLayout::widget()}{widget()} -

162 \endtable -

163 -

164 \sa QLayout, QSpacerItem, QLayoutItem::widget() -

165 */ -

166 -

167 /*! -

168 \fn QLayoutItem::QLayoutItem(Qt::Alignment alignment) -

169 -

170 Constructs a layout item with an \a alignment. -

171 Not all subclasses support alignment. -

172 */ -

173 -

174 /*! -

175 \fn Qt::Alignment QLayoutItem::alignment() const -

176 -

177 Returns the alignment of this item. -

178 */ -

179 -

180 /*! -

181 Sets the alignment of this item to \a alignment. -

182 -

183 \b{Note:} Item alignment is only supported by QLayoutItem subclasses -

184 where it would have a visual effect. Except for QSpacerItem, which provides -

185 blank space for layouts, all public Qt classes that inherit QLayoutItem -

186 support item alignment. -

187 */ -

188 void QLayoutItem::setAlignment(Qt::Alignment alignment) -

189 { -

190 align = alignment; -

191

}

never executed: end of block

192 -

193 /*! -

194 \fn QSize QLayoutItem::maximumSize() const -

195 -

196 Implemented in subclasses to return the maximum size of this item. -

197 */ -

198 -

199 /*! -

200 \fn QSize QLayoutItem::minimumSize() const -

201 -

202 Implemented in subclasses to return the minimum size of this item. -

203 */ -

204 -

205 /*! -

206 \fn QSize QLayoutItem::sizeHint() const -

207 -

208 Implemented in subclasses to return the preferred size of this item. -

209 */ -

210 -

211 /*! -

212 \fn Qt::Orientations QLayoutItem::expandingDirections() const -

213 -

214 Returns whether this layout item can make use of more space than -

215 sizeHint(). A value of Qt::Vertical or Qt::Horizontal means that -

216 it wants to grow in only one dimension, whereas Qt::Vertical | -

217 Qt::Horizontal means that it wants to grow in both dimensions. -

218 */ -

219 -

220 /*! -

221 \fn void QLayoutItem::setGeometry(const QRect &r) -

222 -

223 Implemented in subclasses to set this item's geometry to \a r. -

224 -

225 \sa geometry() -

226 */ -

227 -

228 /*! -

229 \fn QRect QLayoutItem::geometry() const -

230 -

231 Returns the rectangle covered by this layout item. -

232 -

233 \sa setGeometry() -

234 */ -

235 -

236 /*! -

237 \fn virtual bool QLayoutItem::isEmpty() const -

238 -

239 Implemented in subclasses to return whether this item is empty, -

240 i.e. whether it contains any widgets. -

241 */ -

242 -

243 /*! -

244 \fn QSpacerItem::QSpacerItem(int w, int h, QSizePolicy::Policy hPolicy, QSizePolicy::Policy vPolicy) -

245 -

246 Constructs a spacer item with preferred width \a w, preferred -

247 height \a h, horizontal size policy \a hPolicy and vertical size -

248 policy \a vPolicy. -

249 -

250 The default values provide a gap that is able to stretch if -

251 nothing else wants the space. -

252 */ -

253 -

254 /*! -

255 Destructor. -

256 */ -

257 QSpacerItem::~QSpacerItem() {} -

258 -

259 /*! -

260 Changes this spacer item to have preferred width \a w, preferred -

261 height \a h, horizontal size policy \a hPolicy and vertical size -

262 policy \a vPolicy. -

263 -

264 The default values provide a gap that is able to stretch if -

265 nothing else wants the space. -

266 -

267 Note that if changeSize() is called after the spacer item has been added -

268 to a layout, it is necessary to invalidate the layout in order for the -

269 spacer item's new size to take effect. -

270 -

271 \sa QSpacerItem::invalidate() -

272 */ -

273 void QSpacerItem::changeSize(int w, int h, QSizePolicy::Policy hPolicy, -

274 QSizePolicy::Policy vPolicy) -

275 { -

276 width = w; -

277 height = h; -

278 sizeP = QSizePolicy(hPolicy, vPolicy); -

279

}

never executed: end of block

280 -

281 /*! -

282 \fn QWidgetItem::QWidgetItem(QWidget *widget) -

283 -

284 Creates an item containing the given \a widget. -

285 */ -

286 -

287 /*! -

288 Destructor. -

289 */ -

290 QWidgetItem::~QWidgetItem() {} -

291 -

292 /*! -

293 Destroys the QLayoutItem. -

294 */ -

295 QLayoutItem::~QLayoutItem() -

296 { -

297 } -

298 -

299 /*! -

300 Invalidates any cached information in this layout item. -

301 */ -

302 void QLayoutItem::invalidate() -

303 { -

304 } -

305 -

306 /*! -

307 If this item is a QLayout, it is returned as a QLayout; otherwise -

308 0 is returned. This function provides type-safe casting. -

309 -

310 \sa spacerItem(), widget() -

311 */ -

312 QLayout * QLayoutItem::layout() -

313 { -

314

return 0;

never executed: return 0;

315 } -

316 -

317 /*! -

318 If this item is a QSpacerItem, it is returned as a QSpacerItem; -

319 otherwise 0 is returned. This function provides type-safe casting. -

320 -

321 \sa layout(), widget() -

322 */ -

323 QSpacerItem * QLayoutItem::spacerItem() -

324 { -

325

return 0;

never executed: return 0;

326 } -

327 -

328 /*! -

329 \reimp -

330 */ -

331 QLayout * QLayout::layout() -

332 { -

333

return this;

never executed: return this;

334 } -

335 -

336 /*! -

337 Returns a pointer to this object. -

338 */ -

339 QSpacerItem * QSpacerItem::spacerItem() -

340 { -

341

return this;

never executed: return this;

342 } -

343 -

344 /*! -

345 \fn QSizePolicy QSpacerItem::sizePolicy() const -

346 \since 5.5 -

347 -

348 Returns the size policy of this item. -

349 */ -

350 -

351 /*! -

352 If this item manages a QWidget, returns that widget. Otherwise, -

353 \c nullptr is returned. -

354 -

355 \note While the functions layout() and spacerItem() perform casts, this -

356 function returns another object: QLayout and QSpacerItem inherit QLayoutItem, -

357 while QWidget does not. -

358 -

359 \sa layout(), spacerItem() -

360 */ -

361 QWidget * QLayoutItem::widget() -

362 { -

363

return 0;

never executed: return 0;

364 } -

365 -

366 /*! -

367 Returns the widget managed by this item. -

368 */ -

369 QWidget *QWidgetItem::widget() -

370 { -

371

return wid;

never executed: return wid;

372 } -

373 -

374 /*! -

375 Returns \c true if this layout's preferred height depends on its -

376 width; otherwise returns \c false. The default implementation returns -

377 false. -

378 -

379 Reimplement this function in layout managers that support height -

380 for width. -

381 -

382 \sa heightForWidth(), QWidget::heightForWidth() -

383 */ -

384 bool QLayoutItem::hasHeightForWidth() const -

385 { -

386

return false;

never executed: return false;

387 } -

388 -

389 /*! -

390 Returns the minimum height this widget needs for the given width, -

391 \a w. The default implementation simply returns heightForWidth(\a -

392 w). -

393 */ -

394 int QLayoutItem::minimumHeightForWidth(int w) const -

395 { -

396

return heightForWidth(w);

never executed: return heightForWidth(w);

397 } -

398 -

399 -

400 /*! -

401 Returns the preferred height for this layout item, given the width -

402 \a w. -

403 -

404 The default implementation returns -1, indicating that the -

405 preferred height is independent of the width of the item. Using -

406 the function hasHeightForWidth() will typically be much faster -

407 than calling this function and testing for -1. -

408 -

409 Reimplement this function in layout managers that support height -

410 for width. A typical implementation will look like this: -

411 \snippet code/src_gui_kernel_qlayoutitem.cpp 0 -

412 -

413 Caching is strongly recommended; without it layout will take -

414 exponential time. -

415 -

416 \sa hasHeightForWidth() -

417 */ -

418 int QLayoutItem::heightForWidth(int /* w */) const -

419 { -

420

return -1;

never executed: return -1;

421 } -

422 -

423 /*! -

424 Returns the control type(s) for the layout item. For a -

425 QWidgetItem, the control type comes from the widget's size -

426 policy; for a QLayoutItem, the control types is derived from the -

427 layout's contents. -

428 -

429 \sa QSizePolicy::controlType() -

430 */ -

431 QSizePolicy::ControlTypes QLayoutItem::controlTypes() const -

432 { -

433

return QSizePolicy::DefaultType;

never executed: return QSizePolicy::DefaultType;

434 } -

435 -

436 /*! -

437 \reimp -

438 */ -

439 void QSpacerItem::setGeometry(const QRect &r) -

440 { -

441 rect = r; -

442

}

never executed: end of block

443 -

444 /*! -

445 \reimp -

446 */ -

447 void QWidgetItem::setGeometry(const QRect &rect) -

448 { -

449

if (isEmpty())

isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

450

return;

never executed: return;

451 -

452

QRect r = !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect)

!wid->testAttr...sesWidgetRect)	Description
TRUE	never evaluated
FALSE	never evaluated

453 ? fromLayoutItemRect(wid->d_func(), rect) -

454 : rect; -

455 const QSize widgetRectSurplus = r.size() - rect.size(); -

456 -

457 /* -

458 For historical reasons, this code is done using widget rect -

459 coordinates, not layout item rect coordinates. However, -

460 QWidgetItem's sizeHint(), maximumSize(), and heightForWidth() -

461 all work in terms of layout item rect coordinates, so we have to -

462 add or subtract widgetRectSurplus here and there. The code could -

463 be much simpler if we did everything using layout item rect -

464 coordinates and did the conversion right before the call to -

465 QWidget::setGeometry(). -

466 */ -

467 -

468 QSize s = r.size().boundedTo(maximumSize() + widgetRectSurplus); -

469 int x = r.x(); -

470 int y = r.y(); -

471

if (align & (Qt::AlignHorizontal_Mask | Qt::AlignVertical_Mask)) {

align & (Qt::A...Vertical_Mask)	Description
TRUE	never evaluated
FALSE	never evaluated

472 QSize pref(sizeHint()); -

473 QSizePolicy sp = wid->sizePolicy(); -

474

if (sp.horizontalPolicy() == QSizePolicy::Ignored)

sp.horizontalP...olicy::Ignored	Description
TRUE	never evaluated
FALSE	never evaluated

475

pref.setWidth(wid->sizeHint().expandedTo(wid->minimumSize()).width());

never executed: pref.setWidth(wid->sizeHint().expandedTo(wid->minimumSize()).width());

476

if (sp.verticalPolicy() == QSizePolicy::Ignored)

sp.verticalPol...olicy::Ignored	Description
TRUE	never evaluated
FALSE	never evaluated

477

pref.setHeight(wid->sizeHint().expandedTo(wid->minimumSize()).height());

never executed: pref.setHeight(wid->sizeHint().expandedTo(wid->minimumSize()).height());

478 pref += widgetRectSurplus; -

479

if (align & Qt::AlignHorizontal_Mask)

align & Qt::Al...orizontal_Mask	Description
TRUE	never evaluated
FALSE	never evaluated

480

s.setWidth(qMin(s.width(), pref.width()));

never executed: s.setWidth(qMin(s.width(), pref.width()));

481

if (align & Qt::AlignVertical_Mask) {

align & Qt::AlignVertical_Mask	Description
TRUE	never evaluated
FALSE	never evaluated

482

if (hasHeightForWidth())

hasHeightForWidth()	Description
TRUE	never evaluated
FALSE	never evaluated

483

s.setHeight(qMin(s.height(),

never executed: s.setHeight(qMin(s.height(), heightForWidth(s.width() - widgetRectSurplus.width()) + widgetRectSurplus.height()));

484

heightForWidth(s.width() - widgetRectSurplus.width())

never executed: s.setHeight(qMin(s.height(), heightForWidth(s.width() - widgetRectSurplus.width()) + widgetRectSurplus.height()));

485

+ widgetRectSurplus.height()));

never executed: s.setHeight(qMin(s.height(), heightForWidth(s.width() - widgetRectSurplus.width()) + widgetRectSurplus.height()));

486 else -

487

s.setHeight(qMin(s.height(), pref.height()));

never executed: s.setHeight(qMin(s.height(), pref.height()));

488 } -

489

}

never executed: end of block

490 Qt::Alignment alignHoriz = QStyle::visualAlignment(wid->layoutDirection(), align); -

491

if (alignHoriz & Qt::AlignRight)

alignHoriz & Qt::AlignRight	Description
TRUE	never evaluated
FALSE	never evaluated

492

x = x + (r.width() - s.width());

never executed: x = x + (r.width() - s.width());

493

else if (!(alignHoriz & Qt::AlignLeft))

!(alignHoriz & Qt::AlignLeft)	Description
TRUE	never evaluated
FALSE	never evaluated

494

x = x + (r.width() - s.width()) / 2;

never executed: x = x + (r.width() - s.width()) / 2;

495 -

496

if (align & Qt::AlignBottom)

align & Qt::AlignBottom	Description
TRUE	never evaluated
FALSE	never evaluated

497

y = y + (r.height() - s.height());

never executed: y = y + (r.height() - s.height());

498

else if (!(align & Qt::AlignTop))

!(align & Qt::AlignTop)	Description
TRUE	never evaluated
FALSE	never evaluated

499

y = y + (r.height() - s.height()) / 2;

never executed: y = y + (r.height() - s.height()) / 2;

500 -

501 wid->setGeometry(x, y, s.width(), s.height()); -

502

}

never executed: end of block

503 -

504 /*! -

505 \reimp -

506 */ -

507 QRect QSpacerItem::geometry() const -

508 { -

509

return rect;

never executed: return rect;

510 } -

511 -

512 /*! -

513 \reimp -

514 */ -

515 QRect QWidgetItem::geometry() const -

516 { -

517

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect)

never executed:

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect) ? toLayoutItemRect(wid->d_func(), wid->geometry()) : wid->geometry();

518

? toLayoutItemRect(wid->d_func(), wid->geometry())

never executed:

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect) ? toLayoutItemRect(wid->d_func(), wid->geometry()) : wid->geometry();

519

: wid->geometry();

never executed:

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect) ? toLayoutItemRect(wid->d_func(), wid->geometry()) : wid->geometry();

520 } -

521 -

522 -

523 /*! -

524 \reimp -

525 */ -

526 bool QWidgetItem::hasHeightForWidth() const -

527 { -

528

if (isEmpty())

isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

529

return false;

never executed: return false;

530

return wid->hasHeightForWidth();

never executed: return wid->hasHeightForWidth();

531 } -

532 -

533 /*! -

534 \reimp -

535 */ -

536 int QWidgetItem::heightForWidth(int w) const -

537 { -

538

if (isEmpty())

isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

539

return -1;

never executed: return -1;

540 -

541

w = !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect)

!wid->testAttr...sesWidgetRect)	Description
TRUE	never evaluated
FALSE	never evaluated

542 ? fromLayoutItemSize(wid->d_func(), QSize(w, 0)).width() -

543 : w; -

544 -

545 int hfw; -

546

if (wid->layout())

wid->layout()	Description
TRUE	never evaluated
FALSE	never evaluated

547

hfw = wid->layout()->totalHeightForWidth(w);

never executed: hfw = wid->layout()->totalHeightForWidth(w);

548 else -

549

hfw = wid->heightForWidth(w);

never executed: hfw = wid->heightForWidth(w);

550 -

551

if (hfw > wid->maximumHeight())

hfw > wid->maximumHeight()	Description
TRUE	never evaluated
FALSE	never evaluated

552

hfw = wid->maximumHeight();

never executed: hfw = wid->maximumHeight();

553

if (hfw < wid->minimumHeight())

hfw < wid->minimumHeight()	Description
TRUE	never evaluated
FALSE	never evaluated

554

hfw = wid->minimumHeight();

never executed: hfw = wid->minimumHeight();

555 -

556

hfw = !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect)

!wid->testAttr...sesWidgetRect)	Description
TRUE	never evaluated
FALSE	never evaluated

557 ? toLayoutItemSize(wid->d_func(), QSize(0, hfw)).height() -

558 : hfw; -

559 -

560

if (hfw < 0)

hfw < 0	Description
TRUE	never evaluated
FALSE	never evaluated

561

hfw = 0;

never executed: hfw = 0;

562

return hfw;

never executed: return hfw;

563 } -

564 -

565 /*! -

566 \reimp -

567 */ -

568 Qt::Orientations QSpacerItem::expandingDirections() const -

569 { -

570

return sizeP.expandingDirections();

never executed: return sizeP.expandingDirections();

571 } -

572 -

573 /*! -

574 \reimp -

575 */ -

576 Qt::Orientations QWidgetItem::expandingDirections() const -

577 { -

578

if (isEmpty())

isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

579

return Qt::Orientations(0);

never executed: return Qt::Orientations(0);

580 -

581 Qt::Orientations e = wid->sizePolicy().expandingDirections(); -

582 /* -

583 If the layout is expanding, we make the widget expanding, even if -

584 its own size policy isn't expanding. -

585 */ -

586

if (wid->layout()) {

wid->layout()	Description
TRUE	never evaluated
FALSE	never evaluated

587

if (wid->sizePolicy().horizontalPolicy() & QSizePolicy::GrowFlag

wid->sizePolic...licy::GrowFlag	Description
TRUE	never evaluated
FALSE	never evaluated

588

&& (wid->layout()->expandingDirections() & Qt::Horizontal))

(wid->layout()...t::Horizontal)	Description
TRUE	never evaluated
FALSE	never evaluated

589

e |= Qt::Horizontal;

never executed: e |= Qt::Horizontal;

590

if (wid->sizePolicy().verticalPolicy() & QSizePolicy::GrowFlag

wid->sizePolic...licy::GrowFlag	Description
TRUE	never evaluated
FALSE	never evaluated

591

&& (wid->layout()->expandingDirections() & Qt::Vertical))

(wid->layout()... Qt::Vertical)	Description
TRUE	never evaluated
FALSE	never evaluated

592

e |= Qt::Vertical;

never executed: e |= Qt::Vertical;

593

}

never executed: end of block

594 -

595

if (align & Qt::AlignHorizontal_Mask)

align & Qt::Al...orizontal_Mask	Description
TRUE	never evaluated
FALSE	never evaluated

596

e &= ~Qt::Horizontal;

never executed: e &= ~Qt::Horizontal;

597

if (align & Qt::AlignVertical_Mask)

align & Qt::AlignVertical_Mask	Description
TRUE	never evaluated
FALSE	never evaluated

598

e &= ~Qt::Vertical;

never executed: e &= ~Qt::Vertical;

599

return e;

never executed: return e;

600 } -

601 -

602 /*! -

603 \reimp -

604 */ -

605 QSize QSpacerItem::minimumSize() const -

606 { -

607

return QSize(sizeP.horizontalPolicy() & QSizePolicy::ShrinkFlag ? 0 : width,

never executed:

return QSize(sizeP.horizontalPolicy() & QSizePolicy::ShrinkFlag ? 0 : width, sizeP.verticalPolicy() & QSizePolicy::ShrinkFlag ? 0 : height);

608

sizeP.verticalPolicy() & QSizePolicy::ShrinkFlag ? 0 : height);

never executed:

return QSize(sizeP.horizontalPolicy() & QSizePolicy::ShrinkFlag ? 0 : width, sizeP.verticalPolicy() & QSizePolicy::ShrinkFlag ? 0 : height);

609 } -

610 -

611 /*! -

612 \reimp -

613 */ -

614 QSize QWidgetItem::minimumSize() const -

615 { -

616

if (isEmpty())

isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

617

return QSize(0, 0);

never executed: return QSize(0, 0);

618

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect)

never executed:

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect) ? toLayoutItemSize(wid->d_func(), qSmartMinSize(this)) : qSmartMinSize(this);

619

? toLayoutItemSize(wid->d_func(), qSmartMinSize(this))

never executed:

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect) ? toLayoutItemSize(wid->d_func(), qSmartMinSize(this)) : qSmartMinSize(this);

620

: qSmartMinSize(this);

never executed:

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect) ? toLayoutItemSize(wid->d_func(), qSmartMinSize(this)) : qSmartMinSize(this);

621 } -

622 -

623 /*! -

624 \reimp -

625 */ -

626 QSize QSpacerItem::maximumSize() const -

627 { -

628

return QSize(sizeP.horizontalPolicy() & QSizePolicy::GrowFlag ? QLAYOUTSIZE_MAX : width,

never executed:

return QSize(sizeP.horizontalPolicy() & QSizePolicy::GrowFlag ? QLAYOUTSIZE_MAX : width, sizeP.verticalPolicy() & QSizePolicy::GrowFlag ? QLAYOUTSIZE_MAX : height);

629

sizeP.verticalPolicy() & QSizePolicy::GrowFlag ? QLAYOUTSIZE_MAX : height);

never executed:

return QSize(sizeP.horizontalPolicy() & QSizePolicy::GrowFlag ? QLAYOUTSIZE_MAX : width, sizeP.verticalPolicy() & QSizePolicy::GrowFlag ? QLAYOUTSIZE_MAX : height);

630 } -

631 -

632 /*! -

633 \reimp -

634 */ -

635 QSize QWidgetItem::maximumSize() const -

636 { -

637

if (isEmpty()) {

isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

638

return QSize(0, 0);

never executed: return QSize(0, 0);

639 } else { -

640

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect)

never executed:

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect) ? toLayoutItemSize(wid->d_func(), qSmartMaxSize(this, align)) : qSmartMaxSize(this, align);

641

? toLayoutItemSize(wid->d_func(), qSmartMaxSize(this, align))

never executed:

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect) ? toLayoutItemSize(wid->d_func(), qSmartMaxSize(this, align)) : qSmartMaxSize(this, align);

642

: qSmartMaxSize(this, align);

never executed:

return !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect) ? toLayoutItemSize(wid->d_func(), qSmartMaxSize(this, align)) : qSmartMaxSize(this, align);

643 } -

644 } -

645 -

646 /*! -

647 \reimp -

648 */ -

649 QSize QSpacerItem::sizeHint() const -

650 { -

651

return QSize(width, height);

never executed: return QSize(width, height);

652 } -

653 -

654 /*! -

655 \reimp -

656 */ -

657 QSize QWidgetItem::sizeHint() const -

658 { -

659 QSize s(0, 0); -

660

if (!isEmpty()) {

!isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

661 s = wid->sizeHint().expandedTo(wid->minimumSizeHint()); -

662 s = s.boundedTo(wid->maximumSize()) -

663 .expandedTo(wid->minimumSize()); -

664

s = !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect)

!wid->testAttr...sesWidgetRect)	Description
TRUE	never evaluated
FALSE	never evaluated

665 ? toLayoutItemSize(wid->d_func(), s) -

666 : s; -

667 -

668

if (wid->sizePolicy().horizontalPolicy() == QSizePolicy::Ignored)

wid->sizePolic...olicy::Ignored	Description
TRUE	never evaluated
FALSE	never evaluated

669

s.setWidth(0);

never executed: s.setWidth(0);

670

if (wid->sizePolicy().verticalPolicy() == QSizePolicy::Ignored)

wid->sizePolic...olicy::Ignored	Description
TRUE	never evaluated
FALSE	never evaluated

671

s.setHeight(0);

never executed: s.setHeight(0);

672

}

never executed: end of block

673

return s;

never executed: return s;

674 } -

675 -

676 /*! -

677 Returns \c true. -

678 */ -

679 bool QSpacerItem::isEmpty() const -

680 { -

681

return true;

never executed: return true;

682 } -

683 -

684 /*! -

685 Returns \c true if the widget is hidden; otherwise returns \c false. -

686 -

687 \sa QWidget::isHidden() -

688 */ -

689 bool QWidgetItem::isEmpty() const -

690 { -

691

return (wid->isHidden() && !wid->sizePolicy().retainSizeWhenHidden()) || wid->isWindow();

never executed: return (wid->isHidden() && !wid->sizePolicy().retainSizeWhenHidden()) || wid->isWindow();

692 } -

693 -

694 /*! -

695 Returns the control type associated with the widget for which -

696 this size policy applies. -

697 -

698 \sa QSizePolicy::controlType() -

699 */ -

700 QSizePolicy::ControlTypes QWidgetItem::controlTypes() const -

701 { -

702

return wid->sizePolicy().controlType();

never executed: return wid->sizePolicy().controlType();

703 } -

704 -

705 /*! -

706 \class QWidgetItemV2 -

707 \internal -

708 */ -

709 -

710 inline bool QWidgetItemV2::useSizeCache() const -

711 { -

712

return wid->d_func()->widgetItem == this;

never executed: return wid->d_func()->widgetItem == this;

713 } -

714 -

715 void QWidgetItemV2::updateCacheIfNecessary() const -

716 { -

717

if (q_cachedMinimumSize.width() != Dirty)

q_cachedMinimu...dth() != Dirty	Description
TRUE	never evaluated
FALSE	never evaluated

718

return;

never executed: return;

719 -

720 const QSize sizeHint(wid->sizeHint()); -

721 const QSize minimumSizeHint(wid->minimumSizeHint()); -

722 const QSize minimumSize(wid->minimumSize()); -

723 const QSize maximumSize(wid->maximumSize()); -

724 const QSizePolicy sizePolicy(wid->sizePolicy()); -

725 const QSize expandedSizeHint(sizeHint.expandedTo(minimumSizeHint)); -

726 -

727 const QSize smartMinSize(qSmartMinSize(sizeHint, minimumSizeHint, minimumSize, maximumSize, sizePolicy)); -

728 const QSize smartMaxSize(qSmartMaxSize(expandedSizeHint, minimumSize, maximumSize, sizePolicy, align)); -

729 -

730 const bool useLayoutItemRect = !wid->testAttribute(Qt::WA_LayoutUsesWidgetRect); -

731 -

732

q_cachedMinimumSize = useLayoutItemRect

useLayoutItemRect	Description
TRUE	never evaluated
FALSE	never evaluated

733 ? toLayoutItemSize(wid->d_func(), smartMinSize) -

734 : smartMinSize; -

735 -

736 q_cachedSizeHint = expandedSizeHint; -

737 q_cachedSizeHint = q_cachedSizeHint.boundedTo(maximumSize) -

738 .expandedTo(minimumSize); -

739

q_cachedSizeHint = useLayoutItemRect

useLayoutItemRect	Description
TRUE	never evaluated
FALSE	never evaluated

740 ? toLayoutItemSize(wid->d_func(), q_cachedSizeHint) -

741 : q_cachedSizeHint; -

742 -

743

if (wid->sizePolicy().horizontalPolicy() == QSizePolicy::Ignored)

wid->sizePolic...olicy::Ignored	Description
TRUE	never evaluated
FALSE	never evaluated

744

q_cachedSizeHint.setWidth(0);

never executed: q_cachedSizeHint.setWidth(0);

745

if (wid->sizePolicy().verticalPolicy() == QSizePolicy::Ignored)

wid->sizePolic...olicy::Ignored	Description
TRUE	never evaluated
FALSE	never evaluated

746

q_cachedSizeHint.setHeight(0);

never executed: q_cachedSizeHint.setHeight(0);

747 -

748

q_cachedMaximumSize = useLayoutItemRect

useLayoutItemRect	Description
TRUE	never evaluated
FALSE	never evaluated

749 ? toLayoutItemSize(wid->d_func(), smartMaxSize) -

750 : smartMaxSize; -

751

}

never executed: end of block

752 -

753 QWidgetItemV2::QWidgetItemV2(QWidget *widget) -

754 : QWidgetItem(widget), -

755 q_cachedMinimumSize(Dirty, Dirty), -

756 q_cachedSizeHint(Dirty, Dirty), -

757 q_cachedMaximumSize(Dirty, Dirty), -

758 q_firstCachedHfw(0), -

759 q_hfwCacheSize(0), -

760 d(0) -

761 { -

762 QWidgetPrivate *wd = wid->d_func(); -

763

if (!wd->widgetItem)

!wd->widgetItem	Description
TRUE	never evaluated
FALSE	never evaluated

764

wd->widgetItem = this;

never executed: wd->widgetItem = this;

765

}

never executed: end of block

766 -

767 QWidgetItemV2::~QWidgetItemV2() -

768 { -

769

if (wid) {

wid	Description
TRUE	never evaluated
FALSE	never evaluated

770 QWidgetPrivate *wd = wid->d_func(); -

771

if (wd->widgetItem == this)

wd->widgetItem == this	Description
TRUE	never evaluated
FALSE	never evaluated

772

wd->widgetItem = 0;

never executed: wd->widgetItem = 0;

773

}

never executed: end of block

774

}

never executed: end of block

775 -

776 QSize QWidgetItemV2::sizeHint() const -

777 { -

778

if (isEmpty())

isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

779

return QSize(0, 0);

never executed: return QSize(0, 0);

780 -

781

if (useSizeCache()) {

useSizeCache()	Description
TRUE	never evaluated
FALSE	never evaluated

782 updateCacheIfNecessary(); -

783

return q_cachedSizeHint;

never executed: return q_cachedSizeHint;

784 } else { -

785

return QWidgetItem::sizeHint();

never executed: return QWidgetItem::sizeHint();

786 } -

787 } -

788 -

789 QSize QWidgetItemV2::minimumSize() const -

790 { -

791

if (isEmpty())

isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

792

return QSize(0, 0);

never executed: return QSize(0, 0);

793 -

794

if (useSizeCache()) {

useSizeCache()	Description
TRUE	never evaluated
FALSE	never evaluated

795 updateCacheIfNecessary(); -

796

return q_cachedMinimumSize;

never executed: return q_cachedMinimumSize;

797 } else { -

798

return QWidgetItem::minimumSize();

never executed: return QWidgetItem::minimumSize();

799 } -

800 } -

801 -

802 QSize QWidgetItemV2::maximumSize() const -

803 { -

804

if (isEmpty())

isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

805

return QSize(0, 0);

never executed: return QSize(0, 0);

806 -

807

if (useSizeCache()) {

useSizeCache()	Description
TRUE	never evaluated
FALSE	never evaluated

808 updateCacheIfNecessary(); -

809

return q_cachedMaximumSize;

never executed: return q_cachedMaximumSize;

810 } else { -

811

return QWidgetItem::maximumSize();

never executed: return QWidgetItem::maximumSize();

812 } -

813 } -

814 -

815 /* -

816 The height-for-width cache is organized as a circular buffer. The entries -

817 -

818 q_hfwCachedHfws[q_firstCachedHfw], -

819 ..., -

820 q_hfwCachedHfws[(q_firstCachedHfw + q_hfwCacheSize - 1) % HfwCacheMaxSize] -

821 -

822 contain the last cached values. When the cache is full, the first entry to -

823 be erased is the entry before q_hfwCachedHfws[q_firstCachedHfw]. When -

824 values are looked up, we try to move q_firstCachedHfw to point to that new -

825 entry (unless the cache is not full, in which case it would leave the cache -

826 in a broken state), so that the most recently used entry is also the last -

827 to be erased. -

828 */ -

829 -

830 int QWidgetItemV2::heightForWidth(int width) const -

831 { -

832

if (isEmpty())

isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

833

return -1;

never executed: return -1;

834 -

835

for (int i = 0; i < q_hfwCacheSize; ++i) {

i < q_hfwCacheSize	Description
TRUE	never evaluated
FALSE	never evaluated

836 int offset = q_firstCachedHfw + i; -

837 const QSize &size = q_cachedHfws[offset % HfwCacheMaxSize]; -

838

if (size.width() == width) {

size.width() == width	Description
TRUE	never evaluated
FALSE	never evaluated

839

if (q_hfwCacheSize == HfwCacheMaxSize)

q_hfwCacheSize...fwCacheMaxSize	Description
TRUE	never evaluated
FALSE	never evaluated

840

q_firstCachedHfw = offset;

never executed: q_firstCachedHfw = offset;

841

return size.height();

never executed: return size.height();

842 } -

843

}

never executed: end of block

844 -

845

if (q_hfwCacheSize < HfwCacheMaxSize)

q_hfwCacheSize...fwCacheMaxSize	Description
TRUE	never evaluated
FALSE	never evaluated

846

++q_hfwCacheSize;

never executed: ++q_hfwCacheSize;

847 q_firstCachedHfw = (q_firstCachedHfw + HfwCacheMaxSize - 1) % HfwCacheMaxSize; -

848 -

849 int height = QWidgetItem::heightForWidth(width); -

850 q_cachedHfws[q_firstCachedHfw] = QSize(width, height); -

851

return height;

never executed: return height;

852 } -

853 -

854 QT_END_NAMESPACE -

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