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qpen.cpp

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39 #include "qpen.h" -

40 #include "qpen_p.h" -

41 #include "qdatastream.h" -

42 #include "qvariant.h" -

43 #include "qbrush.h" -

44 -

45 #include <qdebug.h> -

46 -

47 QT_BEGIN_NAMESPACE -

48 -

49 typedef QPenPrivate QPenData; -

50 -

51 /*! -

52 \class QPen -

53 \inmodule QtGui -

54 \ingroup painting -

55 \ingroup shared -

56 -

57 -

58 \brief The QPen class defines how a QPainter should draw lines and outlines -

59 of shapes. -

60 -

61 A pen has a style(), width(), brush(), capStyle() and joinStyle(). -

62 -

63 The pen style defines the line type. The brush is used to fill -

64 strokes generated with the pen. Use the QBrush class to specify -

65 fill styles. The cap style determines the line end caps that can -

66 be drawn using QPainter, while the join style describes how joins -

67 between two lines are drawn. The pen width can be specified in -

68 both integer (width()) and floating point (widthF()) precision. A -

69 line width of zero indicates a cosmetic pen. This means that the -

70 pen width is always drawn one pixel wide, independent of the \l -

71 {QPainter#Coordinate Transformations}{transformation} set on the -

72 painter. -

73 -

74 The various settings can easily be modified using the -

75 corresponding setStyle(), setWidth(), setBrush(), setCapStyle() -

76 and setJoinStyle() functions (note that the painter's pen must be -

77 reset when altering the pen's properties). -

78 -

79 For example: -

80 -

81 \snippet code/src_gui_painting_qpen.cpp 0 -

82 -

83 which is equivalent to -

84 -

85 \snippet code/src_gui_painting_qpen.cpp 1 -

86 -

87 The default pen is a solid black brush with 1 width, square -

88 cap style (Qt::SquareCap), and bevel join style (Qt::BevelJoin). -

89 -

90 In addition QPen provides the color() and setColor() -

91 convenience functions to extract and set the color of the pen's -

92 brush, respectively. Pens may also be compared and streamed. -

93 -

94 For more information about painting in general, see the \l{Paint -

95 System} documentation. -

96 -

97 \tableofcontents -

98 -

99 \section1 Pen Style -

100 -

101 Qt provides several built-in styles represented by the -

102 Qt::PenStyle enum: -

103 -

104 \table -

105 \row -

106 \li \inlineimage qpen-solid.png -

107 \li \inlineimage qpen-dash.png -

108 \li \inlineimage qpen-dot.png -

109 \row -

110 \li Qt::SolidLine -

111 \li Qt::DashLine -

112 \li Qt::DotLine -

113 \row -

114 \li \inlineimage qpen-dashdot.png -

115 \li \inlineimage qpen-dashdotdot.png -

116 \li \inlineimage qpen-custom.png -

117 \row -

118 \li Qt::DashDotLine -

119 \li Qt::DashDotDotLine -

120 \li Qt::CustomDashLine -

121 \endtable -

122 -

123 Simply use the setStyle() function to convert the pen style to -

124 either of the built-in styles, except the Qt::CustomDashLine style -

125 which we will come back to shortly. Setting the style to Qt::NoPen -

126 tells the painter to not draw lines or outlines. The default pen -

127 style is Qt::SolidLine. -

128 -

129 Since Qt 4.1 it is also possible to specify a custom dash pattern -

130 using the setDashPattern() function which implicitly converts the -

131 style of the pen to Qt::CustomDashLine. The pattern argument, a -

132 QVector, must be specified as an even number of \l qreal entries -

133 where the entries 1, 3, 5... are the dashes and 2, 4, 6... are the -

134 spaces. For example, the custom pattern shown above is created -

135 using the following code: -

136 -

137 \snippet code/src_gui_painting_qpen.cpp 2 -

138 -

139 Note that the dash pattern is specified in units of the pens -

140 width, e.g. a dash of length 5 in width 10 is 50 pixels long. -

141 -

142 The currently set dash pattern can be retrieved using the -

143 dashPattern() function. Use the isSolid() function to determine -

144 whether the pen has a solid fill, or not. -

145 -

146 \section1 Cap Style -

147 -

148 The cap style defines how the end points of lines are drawn using -

149 QPainter. The cap style only apply to wide lines, i.e. when the -

150 width is 1 or greater. The Qt::PenCapStyle enum provides the -

151 following styles: -

152 -

153 \table -

154 \row -

155 \li \inlineimage qpen-square.png -

156 \li \inlineimage qpen-flat.png -

157 \li \inlineimage qpen-roundcap.png -

158 \row -

159 \li Qt::SquareCap -

160 \li Qt::FlatCap -

161 \li Qt::RoundCap -

162 \endtable -

163 -

164 The Qt::SquareCap style is a square line end that covers the end -

165 point and extends beyond it by half the line width. The -

166 Qt::FlatCap style is a square line end that does not cover the end -

167 point of the line. And the Qt::RoundCap style is a rounded line -

168 end covering the end point. -

169 -

170 The default is Qt::SquareCap. -

171 -

172 Whether or not end points are drawn when the pen width is 0 or 1 -

173 depends on the cap style. Using Qt::SquareCap or Qt::RoundCap they -

174 are drawn, using Qt::FlatCap they are not drawn. -

175 -

176 \section1 Join Style -

177 -

178 The join style defines how joins between two connected lines can -

179 be drawn using QPainter. The join style only apply to wide lines, -

180 i.e. when the width is 1 or greater. The Qt::PenJoinStyle enum -

181 provides the following styles: -

182 -

183 \table -

184 \row -

185 \li \inlineimage qpen-bevel.png -

186 \li \inlineimage qpen-miter.png -

187 \li \inlineimage qpen-roundjoin.png -

188 \row -

189 \li Qt::BevelJoin -

190 \li Qt::MiterJoin -

191 \li Qt::RoundJoin -

192 \endtable -

193 -

194 The Qt::BevelJoin style fills the triangular notch between the two -

195 lines. The Qt::MiterJoin style extends the lines to meet at an -

196 angle. And the Qt::RoundJoin style fills a circular arc between -

197 the two lines. -

198 -

199 The default is Qt::BevelJoin. -

200 -

201 \image qpen-miterlimit.png -

202 -

203 When the Qt::MiterJoin style is applied, it is possible to use the -

204 setMiterLimit() function to specify how far the miter join can -

205 extend from the join point. The miterLimit() is used to reduce -

206 artifacts between line joins where the lines are close to -

207 parallel. -

208 -

209 The miterLimit() must be specified in units of the pens width, -

210 e.g. a miter limit of 5 in width 10 is 50 pixels long. The -

211 default miter limit is 2, i.e. twice the pen width in pixels. -

212 -

213 \table 100% -

214 \row -

215 \li \inlineimage qpen-demo.png -

216 \li \b {\l {painting/pathstroke}{The Path Stroking Example}} -

217 -

218 The Path Stroking example shows Qt's built-in dash patterns and shows -

219 how custom patterns can be used to extend the range of available -

220 patterns. -

221 \endtable -

222 -

223 \sa QPainter, QBrush, {painting/pathstroke}{Path Stroking Example}, -

224 {Scribble Example} -

225 */ -

226 -

227 /*! -

228 \internal -

229 */ -

230 inline QPenPrivate::QPenPrivate(const QBrush &_brush, qreal _width, Qt::PenStyle penStyle, -

231 Qt::PenCapStyle _capStyle, Qt::PenJoinStyle _joinStyle, bool _defaultWidth) -

232 : ref(1), dashOffset(0), miterLimit(2), -

233 cosmetic(false), defaultWidth(_defaultWidth) -

234 { -

235 width = _width; -

236 brush = _brush; -

237 style = penStyle; -

238 capStyle = _capStyle; -

239 joinStyle = _joinStyle; -

240

}

never executed: end of block

241 -

242 static const Qt::PenCapStyle qpen_default_cap = Qt::SquareCap; -

243 static const Qt::PenJoinStyle qpen_default_join = Qt::BevelJoin; -

244 -

245 class QPenDataHolder -

246 { -

247 public: -

248 QPenData *pen; -

249 QPenDataHolder(const QBrush &brush, qreal width, Qt::PenStyle penStyle, -

250 Qt::PenCapStyle penCapStyle, Qt::PenJoinStyle _joinStyle) -

251 : pen(new QPenData(brush, width, penStyle, penCapStyle, _joinStyle)) -

252

{ }

never executed: end of block

253 ~QPenDataHolder() -

254 { -

255

if (!pen->ref.deref())

!pen->ref.deref()	Description
TRUE	never evaluated
FALSE	never evaluated

256

delete pen;

never executed: delete pen;

257 pen = 0; -

258

}

never executed: end of block

259 }; -

260 -

261

Q_GLOBAL_STATIC_WITH_ARGS(QPenDataHolder, defaultPenInstance,

never executed: end of block

never executed: guard.store(QtGlobalStatic::Destroyed);

never executed: return &holder.value;

guard.load() =...c::Initialized	Description
TRUE	never evaluated
FALSE	never evaluated

262 (Qt::black, 1, Qt::SolidLine, qpen_default_cap, qpen_default_join)) -

263

Q_GLOBAL_STATIC_WITH_ARGS(QPenDataHolder, nullPenInstance,

never executed: end of block

never executed: guard.store(QtGlobalStatic::Destroyed);

never executed: return &holder.value;

guard.load() =...c::Initialized	Description
TRUE	never evaluated
FALSE	never evaluated

264 (Qt::black, 1, Qt::NoPen, qpen_default_cap, qpen_default_join)) -

265 -

266 /*! -

267 Constructs a default black solid line pen with 1 width. -

268 */ -

269 -

270 QPen::QPen() -

271 { -

272 d = defaultPenInstance()->pen; -

273 d->ref.ref(); -

274

}

never executed: end of block

275 -

276 /*! -

277 Constructs a black pen with 1 width and the given \a style. -

278 -

279 \sa setStyle() -

280 */ -

281 -

282 QPen::QPen(Qt::PenStyle style) -

283 { -

284

if (style == Qt::NoPen) {

style == Qt::NoPen	Description
TRUE	never evaluated
FALSE	never evaluated

285 d = nullPenInstance()->pen; -

286 d->ref.ref(); -

287

} else {

never executed: end of block

288 d = new QPenData(Qt::black, 1, style, qpen_default_cap, qpen_default_join); -

289

}

never executed: end of block

290 } -

291 -

292 -

293 /*! -

294 Constructs a solid line pen with 1 width and the given \a color. -

295 -

296 \sa setBrush(), setColor() -

297 */ -

298 -

299 QPen::QPen(const QColor &color) -

300 { -

301 d = new QPenData(color, 1, Qt::SolidLine, qpen_default_cap, qpen_default_join); -

302

}

never executed: end of block

303 -

304 -

305 /*! -

306 \fn QPen::QPen(const QBrush &brush, qreal width, Qt::PenStyle style, Qt::PenCapStyle cap, Qt::PenJoinStyle join) -

307 -

308 Constructs a pen with the specified \a brush, \a width, pen \a style, -

309 \a cap style and \a join style. -

310 -

311 \sa setBrush(), setWidth(), setStyle(), setCapStyle(), setJoinStyle() -

312 */ -

313 -

314 QPen::QPen(const QBrush &brush, qreal width, Qt::PenStyle s, Qt::PenCapStyle c, Qt::PenJoinStyle j) -

315 { -

316 d = new QPenData(brush, width, s, c, j, false); -

317

}

never executed: end of block

318 -

319 /*! -

320 \fn QPen::QPen(const QPen &pen) -

321 -

322 Constructs a pen that is a copy of the given \a pen. -

323 */ -

324 -

325 QPen::QPen(const QPen &p) Q_DECL_NOTHROW -

326 { -

327 d = p.d; -

328

if (d)

d	Description
TRUE	never evaluated
FALSE	never evaluated

329

d->ref.ref();

never executed: d->ref.ref();

330

}

never executed: end of block

331 -

332 -

333 /*! -

334 \fn QPen::QPen(QPen &&pen) -

335 \since 5.4 -

336 -

337 Constructs a pen that is moved from the given \a pen. -

338 -

339 The moved-from pen can only be assigned to, copied, or -

340 destroyed. Any other operation (prior to assignment) leads to -

341 undefined behavior. -

342 */ -

343 -

344 /*! -

345 Destroys the pen. -

346 */ -

347 -

348 QPen::~QPen() -

349 { -

350

if (d && !d->ref.deref())

d	Description
TRUE	never evaluated
FALSE	never evaluated

!d->ref.deref()	Description
TRUE	never evaluated
FALSE	never evaluated

351

delete d;

never executed: delete d;

352

}

never executed: end of block

353 -

354 /*! -

355 \fn void QPen::detach() -

356 Detaches from shared pen data to make sure that this pen is the -

357 only one referring the data. -

358 -

359 If multiple pens share common data, this pen dereferences the data -

360 and gets a copy of the data. Nothing is done if there is just a -

361 single reference. -

362 */ -

363 -

364 void QPen::detach() -

365 { -

366

if (d->ref.load() == 1)

d->ref.load() == 1	Description
TRUE	never evaluated
FALSE	never evaluated

367

return;

never executed: return;

368 -

369 QPenData *x = new QPenData(*static_cast<QPenData *>(d)); -

370

if (!d->ref.deref())

!d->ref.deref()	Description
TRUE	never evaluated
FALSE	never evaluated

371

delete d;

never executed: delete d;

372 x->ref.store(1); -

373 d = x; -

374

}

never executed: end of block

375 -

376 -

377 /*! -

378 \fn QPen &QPen::operator=(const QPen &pen) -

379 -

380 Assigns the given \a pen to this pen and returns a reference to -

381 this pen. -

382 */ -

383 -

384 QPen &QPen::operator=(const QPen &p) Q_DECL_NOTHROW -

385 { -

386 QPen(p).swap(*this); -

387

return *this;

never executed: return *this;

388 } -

389 -

390 /*! -

391 \fn QPen &QPen::operator=(QPen &&other) -

392 -

393 Move-assigns \a other to this QPen instance. -

394 -

395 \since 5.2 -

396 */ -

397 -

398 /*! -

399 \fn void QPen::swap(QPen &other) -

400 \since 4.8 -

401 -

402 Swaps pen \a other with this pen. This operation is very -

403 fast and never fails. -

404 */ -

405 -

406 /*! -

407 Returns the pen as a QVariant. -

408 */ -

409 QPen::operator QVariant() const -

410 { -

411

return QVariant(QVariant::Pen, this);

never executed: return QVariant(QVariant::Pen, this);

412 } -

413 -

414 /*! -

415 \fn Qt::PenStyle QPen::style() const -

416 -

417 Returns the pen style. -

418 -

419 \sa setStyle(), {QPen#Pen Style}{Pen Style} -

420 */ -

421 Qt::PenStyle QPen::style() const -

422 { -

423

return d->style;

never executed: return d->style;

424 } -

425 /*! -

426 \fn void QPen::setStyle(Qt::PenStyle style) -

427 -

428 Sets the pen style to the given \a style. -

429 -

430 See the \l Qt::PenStyle documentation for a list of the available -

431 styles. Since Qt 4.1 it is also possible to specify a custom dash -

432 pattern using the setDashPattern() function which implicitly -

433 converts the style of the pen to Qt::CustomDashLine. -

434 -

435 \note This function resets the dash offset to zero. -

436 -

437 \sa style(), {QPen#Pen Style}{Pen Style} -

438 */ -

439 -

440 void QPen::setStyle(Qt::PenStyle s) -

441 { -

442

if (d->style == s)

d->style == s	Description
TRUE	never evaluated
FALSE	never evaluated

443

return;

never executed: return;

444 detach(); -

445 d->style = s; -

446 QPenData *dd = static_cast<QPenData *>(d); -

447 dd->dashPattern.clear(); -

448 dd->dashOffset = 0; -

449

}

never executed: end of block

450 -

451 /*! -

452 Returns the dash pattern of this pen. -

453 -

454 \sa style(), isSolid() -

455 */ -

456 QVector<qreal> QPen::dashPattern() const -

457 { -

458 QPenData *dd = static_cast<QPenData *>(d); -

459

if (d->style == Qt::SolidLine || d->style == Qt::NoPen) {

d->style == Qt::SolidLine	Description
TRUE	never evaluated
FALSE	never evaluated

d->style == Qt::NoPen	Description
TRUE	never evaluated
FALSE	never evaluated

460

return QVector<qreal>();

never executed: return QVector<qreal>();

461

} else if (dd->dashPattern.isEmpty()) {

dd->dashPattern.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

462 const qreal space = 2; -

463 const qreal dot = 1; -

464 const qreal dash = 4; -

465 -

466 switch (d->style) { -

467

case Qt::DashLine:

never executed: case Qt::DashLine:

468 dd->dashPattern.reserve(2); -

469 dd->dashPattern << dash << space; -

470

break;

never executed: break;

471

case Qt::DotLine:

never executed: case Qt::DotLine:

472 dd->dashPattern.reserve(2); -

473 dd->dashPattern << dot << space; -

474

break;

never executed: break;

475

case Qt::DashDotLine:

never executed: case Qt::DashDotLine:

476 dd->dashPattern.reserve(4); -

477 dd->dashPattern << dash << space << dot << space; -

478

break;

never executed: break;

479

case Qt::DashDotDotLine:

never executed: case Qt::DashDotDotLine:

480 dd->dashPattern.reserve(6); -

481 dd->dashPattern << dash << space << dot << space << dot << space; -

482

break;

never executed: break;

483

default:

never executed: default:

484

break;

never executed: break;

485 } -

486 } -

487

return dd->dashPattern;

never executed: return dd->dashPattern;

488 } -

489 -

490 /*! -

491 Sets the dash pattern for this pen to the given \a pattern. This -

492 implicitly converts the style of the pen to Qt::CustomDashLine. -

493 -

494 The pattern must be specified as an even number of positive entries -

495 where the entries 1, 3, 5... are the dashes and 2, 4, 6... are the -

496 spaces. For example: -

497 -

498 \table 100% -

499 \row -

500 \li \inlineimage qpen-custom.png -

501 \li -

502 \snippet code/src_gui_painting_qpen.cpp 3 -

503 \endtable -

504 -

505 The dash pattern is specified in units of the pens width; e.g. a -

506 dash of length 5 in width 10 is 50 pixels long. Note that a pen -

507 with zero width is equivalent to a cosmetic pen with a width of 1 -

508 pixel. -

509 -

510 Each dash is also subject to cap styles so a dash of 1 with square -

511 cap set will extend 0.5 pixels out in each direction resulting in -

512 a total width of 2. -

513 -

514 Note that the default cap style is Qt::SquareCap, meaning that a -

515 square line end covers the end point and extends beyond it by half -

516 the line width. -

517 -

518 \sa setStyle(), dashPattern(), setCapStyle(), setCosmetic() -

519 */ -

520 void QPen::setDashPattern(const QVector<qreal> &pattern) -

521 { -

522

if (pattern.isEmpty())

pattern.isEmpty()	Description
TRUE	never evaluated
FALSE	never evaluated

523

return;

never executed: return;

524 detach(); -

525 -

526 QPenData *dd = static_cast<QPenData *>(d); -

527 dd->dashPattern = pattern; -

528 d->style = Qt::CustomDashLine; -

529 -

530

if ((dd->dashPattern.size() % 2) == 1) {

(dd->dashPatte...ze() % 2) == 1	Description
TRUE	never evaluated
FALSE	never evaluated

531 qWarning("QPen::setDashPattern: Pattern not of even length"); -

532 dd->dashPattern << 1; -

533

}

never executed: end of block

534

}

never executed: end of block

535 -

536 -

537 /*! -

538 Returns the dash offset for the pen. -

539 -

540 \sa setDashOffset() -

541 */ -

542 qreal QPen::dashOffset() const -

543 { -

544 QPenData *dd = static_cast<QPenData *>(d); -

545

return dd->dashOffset;

never executed: return dd->dashOffset;

546 } -

547 /*! -

548 Sets the dash offset (the starting point on the dash pattern) for this pen -

549 to the \a offset specified. The offset is measured in terms of the units used -

550 to specify the dash pattern. -

551 -

552 \table -

553 \row \li \inlineimage qpen-dashpattern.png -

554 \li For example, a pattern where each stroke is four units long, followed by a gap -

555 of two units, will begin with the stroke when drawn as a line. -

556 -

557 However, if the dash offset is set to 4.0, any line drawn will begin with the gap. -

558 Values of the offset up to 4.0 will cause part of the stroke to be drawn first, -

559 and values of the offset between 4.0 and 6.0 will cause the line to begin with -

560 part of the gap. -

561 \endtable -

562 -

563 \note This implicitly converts the style of the pen to Qt::CustomDashLine. -

564 */ -

565 void QPen::setDashOffset(qreal offset) -

566 { -

567

if (qFuzzyCompare(offset, static_cast<QPenData *>(d)->dashOffset))

qFuzzyCompare(...)->dashOffset)	Description
TRUE	never evaluated
FALSE	never evaluated

568

return;

never executed: return;

569 detach(); -

570 QPenData *dd = static_cast<QPenData *>(d); -

571 dd->dashOffset = offset; -

572

if (d->style != Qt::CustomDashLine) {

d->style != Qt::CustomDashLine	Description
TRUE	never evaluated
FALSE	never evaluated

573 dd->dashPattern = dashPattern(); -

574 d->style = Qt::CustomDashLine; -

575

}

never executed: end of block

576

}

never executed: end of block

577 -

578 /*! -

579 Returns the miter limit of the pen. The miter limit is only -

580 relevant when the join style is set to Qt::MiterJoin. -

581 -

582 \sa setMiterLimit(), {QPen#Join Style}{Join Style} -

583 */ -

584 qreal QPen::miterLimit() const -

585 { -

586 const QPenData *dd = static_cast<QPenData *>(d); -

587

return dd->miterLimit;

never executed: return dd->miterLimit;

588 } -

589 -

590 /*! -

591 Sets the miter limit of this pen to the given \a limit. -

592 -

593 \image qpen-miterlimit.png -

594 -

595 The miter limit describes how far a miter join can extend from the -

596 join point. This is used to reduce artifacts between line joins -

597 where the lines are close to parallel. -

598 -

599 This value does only have effect when the pen style is set to -

600 Qt::MiterJoin. The value is specified in units of the pen's width, -

601 e.g. a miter limit of 5 in width 10 is 50 pixels long. The default -

602 miter limit is 2, i.e. twice the pen width in pixels. -

603 -

604 \sa miterLimit(), setJoinStyle(), {QPen#Join Style}{Join Style} -

605 */ -

606 void QPen::setMiterLimit(qreal limit) -

607 { -

608 detach(); -

609 QPenData *dd = static_cast<QPenData *>(d); -

610 dd->miterLimit = limit; -

611

}

never executed: end of block

612 -

613 -

614 /*! -

615 \fn qreal QPen::width() const -

616 -

617 Returns the pen width with integer precision. -

618 -

619 \sa setWidth(), widthF() -

620 */ -

621 -

622 int QPen::width() const -

623 { -

624

return qRound(d->width);

never executed: return qRound(d->width);

625 } -

626 -

627 /*! -

628 \fn qreal QPen::widthF() const -

629 -

630 Returns the pen width with floating point precision. -

631 -

632 \sa setWidthF(), width() -

633 */ -

634 qreal QPen::widthF() const -

635 { -

636

return d->width;

never executed: return d->width;

637 } -

638 -

639 /*! -

640 \fn QPen::setWidth(int width) -

641 -

642 Sets the pen width to the given \a width in pixels with integer -

643 precision. -

644 -

645 A line width of zero indicates a cosmetic pen. This means that the -

646 pen width is always drawn one pixel wide, independent of the \l -

647 {QPainter#Coordinate Transformations}{transformation} set on the -

648 painter. -

649 -

650 Setting a pen width with a negative value is not supported. -

651 -

652 \sa setWidthF(), width() -

653 */ -

654 void QPen::setWidth(int width) -

655 { -

656

if (width < 0)

width < 0	Description
TRUE	never evaluated
FALSE	never evaluated

657

qWarning("QPen::setWidth: Setting a pen width with a negative value is not defined");

never executed:

QMessageLogger(__FILE__, 657, __PRETTY_FUNCTION__).warning("QPen::setWidth: Setting a pen width with a negative value is not defined");

658

if ((qreal)width == d->width)

(qreal)width == d->width	Description
TRUE	never evaluated
FALSE	never evaluated

659

return;

never executed: return;

660 detach(); -

661 d->width = width; -

662

}

never executed: end of block

663 -

664 /*! -

665 Sets the pen width to the given \a width in pixels with floating point -

666 precision. -

667 -

668 A line width of zero indicates a cosmetic pen. This means that the -

669 pen width is always drawn one pixel wide, independent of the \l -

670 {QPainter#Coordinate Transformations}{transformation} on the -

671 painter. -

672 -

673 Setting a pen width with a negative value is not supported. -

674 -

675 \sa setWidth(), widthF() -

676 */ -

677 -

678 void QPen::setWidthF(qreal width) -

679 { -

680

if (width < 0.f) {

width < 0.f	Description
TRUE	never evaluated
FALSE	never evaluated

681 qWarning("QPen::setWidthF: Setting a pen width with a negative value is not defined"); -

682

return;

never executed: return;

683 } -

684

if (qAbs(d->width - width) < 0.00000001f)

qAbs(d->width ... < 0.00000001f	Description
TRUE	never evaluated
FALSE	never evaluated

685

return;

never executed: return;

686 detach(); -

687 d->width = width; -

688 d->defaultWidth = false; -

689

}

never executed: end of block

690 -

691 -

692 /*! -

693 Returns the pen's cap style. -

694 -

695 \sa setCapStyle(), {QPen#Cap Style}{Cap Style} -

696 */ -

697 Qt::PenCapStyle QPen::capStyle() const -

698 { -

699

return d->capStyle;

never executed: return d->capStyle;

700 } -

701 -

702 /*! -

703 \fn void QPen::setCapStyle(Qt::PenCapStyle style) -

704 -

705 Sets the pen's cap style to the given \a style. The default value -

706 is Qt::SquareCap. -

707 -

708 \sa capStyle(), {QPen#Cap Style}{Cap Style} -

709 */ -

710 -

711 void QPen::setCapStyle(Qt::PenCapStyle c) -

712 { -

713

if (d->capStyle == c)

d->capStyle == c	Description
TRUE	never evaluated
FALSE	never evaluated

714

return;

never executed: return;

715 detach(); -

716 d->capStyle = c; -

717

}

never executed: end of block

718 -

719 /*! -

720 Returns the pen's join style. -

721 -

722 \sa setJoinStyle(), {QPen#Join Style}{Join Style} -

723 */ -

724 Qt::PenJoinStyle QPen::joinStyle() const -

725 { -

726

return d->joinStyle;

never executed: return d->joinStyle;

727 } -

728 -

729 /*! -

730 \fn void QPen::setJoinStyle(Qt::PenJoinStyle style) -

731 -

732 Sets the pen's join style to the given \a style. The default value -

733 is Qt::BevelJoin. -

734 -

735 \sa joinStyle(), {QPen#Join Style}{Join Style} -

736 */ -

737 -

738 void QPen::setJoinStyle(Qt::PenJoinStyle j) -

739 { -

740

if (d->joinStyle == j)

d->joinStyle == j	Description
TRUE	never evaluated
FALSE	never evaluated

741

return;

never executed: return;

742 detach(); -

743 d->joinStyle = j; -

744

}

never executed: end of block

745 -

746 /*! -

747 \fn const QColor &QPen::color() const -

748 -

749 Returns the color of this pen's brush. -

750 -

751 \sa brush(), setColor() -

752 */ -

753 QColor QPen::color() const -

754 { -

755

return d->brush.color();

never executed: return d->brush.color();

756 } -

757 -

758 /*! -

759 \fn void QPen::setColor(const QColor &color) -

760 -

761 Sets the color of this pen's brush to the given \a color. -

762 -

763 \sa setBrush(), color() -

764 */ -

765 -

766 void QPen::setColor(const QColor &c) -

767 { -

768 detach(); -

769 d->brush = QBrush(c); -

770

}

never executed: end of block

771 -

772 -

773 /*! -

774 Returns the brush used to fill strokes generated with this pen. -

775 */ -

776 QBrush QPen::brush() const -

777 { -

778

return d->brush;

never executed: return d->brush;

779 } -

780 -

781 /*! -

782 Sets the brush used to fill strokes generated with this pen to the given -

783 \a brush. -

784 -

785 \sa brush(), setColor() -

786 */ -

787 void QPen::setBrush(const QBrush &brush) -

788 { -

789 detach(); -

790 d->brush = brush; -

791

}

never executed: end of block

792 -

793 -

794 /*! -

795 Returns \c true if the pen has a solid fill, otherwise false. -

796 -

797 \sa style(), dashPattern() -

798 */ -

799 bool QPen::isSolid() const -

800 { -

801

return d->brush.style() == Qt::SolidPattern;

never executed: return d->brush.style() == Qt::SolidPattern;

802 } -

803 -

804 -

805 /*! -

806 Returns \c true if the pen is cosmetic; otherwise returns \c false. -

807 -

808 Cosmetic pens are used to draw strokes that have a constant width -

809 regardless of any transformations applied to the QPainter they are -

810 used with. Drawing a shape with a cosmetic pen ensures that its -

811 outline will have the same thickness at different scale factors. -

812 -

813 A zero width pen is cosmetic by default. -

814 -

815 \sa setCosmetic(), widthF() -

816 */ -

817 -

818 bool QPen::isCosmetic() const -

819 { -

820 QPenData *dd = static_cast<QPenData *>(d); -

821

return (dd->cosmetic == true) || d->width == 0;

never executed: return (dd->cosmetic == true) || d->width == 0;

822 } -

823 -

824 -

825 /*! -

826 Sets this pen to cosmetic or non-cosmetic, depending on the value of -

827 \a cosmetic. -

828 -

829 \sa isCosmetic() -

830 */ -

831 -

832 void QPen::setCosmetic(bool cosmetic) -

833 { -

834 detach(); -

835 QPenData *dd = static_cast<QPenData *>(d); -

836 dd->cosmetic = cosmetic; -

837

}

never executed: end of block

838 -

839 -

840 -

841 /*! -

842 \fn bool QPen::operator!=(const QPen &pen) const -

843 -

844 Returns \c true if the pen is different from the given \a pen; -

845 otherwise false. Two pens are different if they have different -

846 styles, widths or colors. -

847 -

848 \sa operator==() -

849 */ -

850 -

851 /*! -

852 \fn bool QPen::operator==(const QPen &pen) const -

853 -

854 Returns \c true if the pen is equal to the given \a pen; otherwise -

855 false. Two pens are equal if they have equal styles, widths and -

856 colors. -

857 -

858 \sa operator!=() -

859 */ -

860 -

861 bool QPen::operator==(const QPen &p) const -

862 { -

863 QPenData *dd = static_cast<QPenData *>(d); -

864 QPenData *pdd = static_cast<QPenData *>(p.d); -

865

return (p.d == d)

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

866

|| (p.d->style == d->style

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

867

&& p.d->capStyle == d->capStyle

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

868

&& p.d->joinStyle == d->joinStyle

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

869

&& p.d->width == d->width

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

870

&& pdd->miterLimit == dd->miterLimit

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

871

&& (d->style != Qt::CustomDashLine

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

872

|| (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) &&

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

873

pdd->dashPattern == dd->dashPattern))

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

874

&& p.d->brush == d->brush

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

875

&& pdd->cosmetic == dd->cosmetic

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

876

&& pdd->defaultWidth == dd->defaultWidth);

never executed:

return (p.d == d) || (p.d->style == d->style && p.d->capStyle == d->capStyle && p.d->joinStyle == d->joinStyle && p.d->width == d->width && pdd->miterLimit == dd->miterLimit && (d->style != Qt::CustomDashLine || (qFuzzyCompare(pdd->dashOffset, dd->dashOffset) && pdd->dashPattern == dd->dashPattern)) && p.d->brush == d->brush && pdd->cosmetic == dd->cosmetic && pdd->defaultWidth == dd->defaultWidth);

877 } -

878 -

879 -

880 /*! -

881 \fn bool QPen::isDetached() -

882 -

883 \internal -

884 */ -

885 -

886 bool QPen::isDetached() -

887 { -

888

return d->ref.load() == 1;

never executed: return d->ref.load() == 1;

889 } -

890 -

891 -

892 /***************************************************************************** -

893 QPen stream functions -

894 *****************************************************************************/ -

895 #ifndef QT_NO_DATASTREAM -

896 /*! -

897 \fn QDataStream &operator<<(QDataStream &stream, const QPen &pen) -

898 \relates QPen -

899 -

900 Writes the given \a pen to the given \a stream and returns a reference to -

901 the \a stream. -

902 -

903 \sa {Serializing Qt Data Types} -

904 */ -

905 -

906 QDataStream &operator<<(QDataStream &s, const QPen &p) -

907 { -

908 QPenData *dd = static_cast<QPenData *>(p.d); -

909

if (s.version() < 3) {

s.version() < 3	Description
TRUE	never evaluated
FALSE	never evaluated

910 s << (quint8)p.style(); -

911

} else if (s.version() < QDataStream::Qt_4_3) {

never executed: end of block

s.version() < ...Stream::Qt_4_3	Description
TRUE	never evaluated
FALSE	never evaluated

912 s << (quint8)(p.style() | p.capStyle() | p.joinStyle()); -

913

} else {

never executed: end of block

914 s << (quint16)(p.style() | p.capStyle() | p.joinStyle()); -

915 s << (bool)(dd->cosmetic); -

916

}

never executed: end of block

917 -

918

if (s.version() < 7) {

s.version() < 7	Description
TRUE	never evaluated
FALSE	never evaluated

919 s << (quint8)p.width(); -

920 s << p.color(); -

921

} else {

never executed: end of block

922 s << double(p.widthF()); -

923 s << p.brush(); -

924 s << double(p.miterLimit()); -

925

if (sizeof(qreal) == sizeof(double)) {

sizeof(qreal) ...sizeof(double)	Description
TRUE	never evaluated
FALSE	never evaluated

926 s << p.dashPattern(); -

927

} else {

never executed: end of block

928 // ensure that we write doubles here instead of streaming the pattern -

929 // directly; otherwise, platforms that redefine qreal might generate -

930 // data that cannot be read on other platforms. -

931 QVector<qreal> pattern = p.dashPattern(); -

932 s << quint32(pattern.size()); -

933

for (int i = 0; i < pattern.size(); ++i)

i < pattern.size()	Description
TRUE	never evaluated
FALSE	never evaluated

934

s << double(pattern.at(i));

never executed: s << double(pattern.at(i));

935

}

never executed: end of block

936

if (s.version() >= 9)

s.version() >= 9	Description
TRUE	never evaluated
FALSE	never evaluated

937

s << double(p.dashOffset());

never executed: s << double(p.dashOffset());

938

if (s.version() >= QDataStream::Qt_5_0)

s.version() >=...Stream::Qt_5_0	Description
TRUE	never evaluated
FALSE	never evaluated

939

s << bool(dd->defaultWidth);

never executed: s << bool(dd->defaultWidth);

940

}

never executed: end of block

941

return s;

never executed: return s;

942 } -

943 -

944 /*! -

945 \fn QDataStream &operator>>(QDataStream &stream, QPen &pen) -

946 \relates QPen -

947 -

948 Reads a pen from the given \a stream into the given \a pen and -

949 returns a reference to the \a stream. -

950 -

951 \sa {Serializing Qt Data Types} -

952 */ -

953 -

954 QDataStream &operator>>(QDataStream &s, QPen &p) -

955 { -

956 quint16 style; -

957 quint8 width8 = 0; -

958 double width = 0; -

959 QColor color; -

960 QBrush brush; -

961 double miterLimit = 2; -

962 QVector<qreal> dashPattern; -

963 double dashOffset = 0; -

964 bool cosmetic = false; -

965 bool defaultWidth = false; -

966

if (s.version() < QDataStream::Qt_4_3) {

s.version() < ...Stream::Qt_4_3	Description
TRUE	never evaluated
FALSE	never evaluated

967 quint8 style8; -

968 s >> style8; -

969 style = style8; -

970

} else {

never executed: end of block

971 s >> style; -

972 s >> cosmetic; -

973

}

never executed: end of block

974

if (s.version() < 7) {

s.version() < 7	Description
TRUE	never evaluated
FALSE	never evaluated

975 s >> width8; -

976 s >> color; -

977 brush = color; -

978 width = width8; -

979

} else {

never executed: end of block

980 s >> width; -

981 s >> brush; -

982 s >> miterLimit; -

983

if (sizeof(qreal) == sizeof(double)) {

sizeof(qreal) ...sizeof(double)	Description
TRUE	never evaluated
FALSE	never evaluated

984 s >> dashPattern; -

985

} else {

never executed: end of block

986 quint32 numDashes; -

987 s >> numDashes; -

988 double dash; -

989 dashPattern.reserve(numDashes); -

990

for (quint32 i = 0; i < numDashes; ++i) {

i < numDashes	Description
TRUE	never evaluated
FALSE	never evaluated

991 s >> dash; -

992 dashPattern << dash; -

993

}

never executed: end of block

994

}

never executed: end of block

995

if (s.version() >= 9)

s.version() >= 9	Description
TRUE	never evaluated
FALSE	never evaluated

996

s >> dashOffset;

never executed: s >> dashOffset;

997

}

never executed: end of block

998 -

999

if (s.version() >= QDataStream::Qt_5_0) {

s.version() >=...Stream::Qt_5_0	Description
TRUE	never evaluated
FALSE	never evaluated

1000 s >> defaultWidth; -

1001

} else {

never executed: end of block

1002 // best we can do for legacy pens -

1003 defaultWidth = qFuzzyIsNull(width); -

1004

}

never executed: end of block

1005 -

1006 p.detach(); -

1007 QPenData *dd = static_cast<QPenData *>(p.d); -

1008 dd->width = width; -

1009 dd->brush = brush; -

1010 dd->style = Qt::PenStyle(style & Qt::MPenStyle); -

1011 dd->capStyle = Qt::PenCapStyle(style & Qt::MPenCapStyle); -

1012 dd->joinStyle = Qt::PenJoinStyle(style & Qt::MPenJoinStyle); -

1013 dd->dashPattern = dashPattern; -

1014 dd->miterLimit = miterLimit; -

1015 dd->dashOffset = dashOffset; -

1016 dd->cosmetic = cosmetic; -

1017 dd->defaultWidth = defaultWidth; -

1018 -

1019

return s;

never executed: return s;

1020 } -

1021 #endif //QT_NO_DATASTREAM -

1022 -

1023 #ifndef QT_NO_DEBUG_STREAM -

1024 QDebug operator<<(QDebug dbg, const QPen &p) -

1025 { -

1026 const char *PEN_STYLES[] = { -

1027 "NoPen", -

1028 "SolidLine", -

1029 "DashLine", -

1030 "DotLine", -

1031 "DashDotLine", -

1032 "DashDotDotLine", -

1033 "CustomDashLine" -

1034 }; -

1035 -

1036 QDebugStateSaver saver(dbg); -

1037 dbg.nospace() << "QPen(" << p.width() << ',' << p.brush() -

1038 << ',' << PEN_STYLES[p.style()] << ',' << int(p.capStyle()) -

1039 << ',' << int(p.joinStyle()) << ',' << p.dashPattern() -

1040 << ',' << p.dashOffset() -

1041 << ',' << p.miterLimit() << ')'; -

1042

return dbg;

never executed: return dbg;

1043 } -

1044 #endif -

1045 -

1046 /*! -

1047 \fn DataPtr &QPen::data_ptr() -

1048 \internal -

1049 */ -

1050 -

1051 /*! -

1052 \typedef QPen::DataPtr -

1053 -

1054 \internal -

1055 */ -

1056 -

1057 QT_END_NAMESPACE -

1058 -

1059 #undef QT_COMPILING_QPEN -

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