Qt: qtbase/dist/changes-3.1.0-b1

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1 Qt 3.1 introduces many significant new features and many improvements 2 over the 3.0.x series. This file provides an overview of the main 3 changes since version 3.0.5. For further details see the online 4 documentation which is included in this distribution, and also 5 available at http://qt.nokia.com/doc/. 6 7 The Qt version 3.1 series is binary compatible with the 3.0.x series: 8 applications compiled for 3.0 will continue to run with 3.1. 9 10 11 **************************************************************************** 12 * General * 13 **************************************************************************** 14 15 Qt Script for Applications 16 -------------------------- 17 Qt 3.1 is the first Qt release that can be used with Qt Script for 18 Applications (QSA). QSA provides a scripting engine, an IDE for 19 creating and editing scripts and script forms, and bindings to the Qt 20 API. Script-enabling a Qt application is not difficult and the IDE 21 makes it easy for resellers and end-users to write their own scripts. 22 QSA is due for release after Qt 3.1. 23 24 25 Qt Designer 26 ----------- 27 Qt Designer, the visual GUI builder, has undergone several usability 28 improvements. A new dialog for creating and editing signals and slots 29 connections has been created: it is much easier to use and much faster 30 for setting up multiple connections. The widgets are now presented in 31 an easy-to-use toolbox rather than in toolbars (although you can still 32 have the toolbars if you want). The property editor now handles common 33 properties in multiple widgets simultaneously. By popular demand, 34 WYSIWYG support for QWidgetStack has been added. Rich text is now 35 supported with a rich text editor. And the code editor can be used for 36 ordinary member functions as well as for slots. 37 38 39 Qt Assistant 40 ------------ 41 Qt Assistant, the Qt documentation browser, can now be used with 42 custom documentation sets. This new functionality combined with the 43 new QAssistantClient class means that you can use Qt Assistant as a 44 help browser for your own applications. Qt Assistant has also been 45 enhanced by the addition of a fast full text search engine. 46 47 48 Motif 49 ----- 50 The general industry-wide move away from Motif is leaving more and 51 more companies in need of a migration solution. But converting large 52 legacy applications in one step is often impractical. To minimize 53 risks and to manage the workload companies often want to port code on 54 a module by module basis. Qt 3.1 includeds a completely new Motif 55 module that supports hybrid applications in which Qt code and Motif 56 code coexist. (This obsoletes the earlier rudimentary Qt Xt/Motif 57 extension.) 58 59 60 ActiveX 61 ------- 62 With the release of Qt 3.1, customers who use Qt for Microsoft Windows 63 development can now use Qt with ActiveX. The new ActiveQt module 64 provides a simple API for COM and ActiveX. The module can be used to 65 create applications which host ActiveX controls, and also to create 66 applications that serve ActiveX controls (e.g. Internet Explorer 67 plugins). 68 69 70 Qt/Mac 71 ------ 72 The introduction of Qt/Mac, a Mac OS X port of Qt, with Qt 3.0 has 73 proved a great success. This port has undergone many improvements in 74 Qt 3.1, especially with respect to Appearance Manager, anti-aliased 75 text and user settings. The Qt OpenGL support is greatly improved, and 76 uses the hardware-accelerated drivers. 77 78 79 Qt/Embedded 80 ----------- 81 Graphics, mouse and keyboard drivers can now be compiled as plugins. 82 83 84 Qt library 85 ---------- 86 In addition to the new additions and enhancements referred to above, 87 as with all major Qt releases, Qt 3.1 includes hundreds of 88 improvements in the existing class library. Here is a brief summary of 89 the most significant changes: 90 91 - QTextEdit has a new text format: LogText. This is a performance and 92 memory optimized format especially designed for the fast display of 93 large amounts of text. The format supports basic highlighting, 94 including bold and colored text. 95 96 - The new QSyntaxHighlighter class makes it both easy and efficient to 97 add syntax highlighting capabilities to a QTextEdit. 98 99 - QHttp and QFtp in earlier Qt's were implementations of the 100 QNetworkProtocol. Both have been extended to stand in their own 101 right. If you missed some flexibility in the network protocol 102 abstractions of earlier Qt's, the new QHttp and QFtp classes should 103 provide the solution. 104 105 - QAccel, used to handle keyboard shortcuts, now gracefully copes with 106 shortcut clashes. If a clash occurs, a new signal, 107 activatedAmbiguously(), is emitted. Classes that use QAccel, like 108 QButton and QPopupMenu, make use of this new functionality. 109 Futhermore QAccel can now handle multi-key sequences, for example, 110 Ctrl+X,Ctrl+F. 111 112 - QClipboard has been extended to simplify data exchange between 113 programs. 114 115 - Thread support: almost all methods in the tools classes have been 116 made reentrant. QApplication::postEvent() and a few other methods 117 are now thread-safe if Qt is compiled as a multi-threaded library. 118 (The documentation now states if a class or function is thread-safe 119 or reentrant.) 120 121 - A QMutexLocker class has been added to simplify the locking and 122 unlocking of mutexes. 123 124 - Input methods: A selectionLength() function has been added to 125 QIMEvent. Japanese compositions are now handled correctly. Support 126 for AIMM based input methods (those working on non-Asian versions of 127 Win95/98/Me) has been added. 128 129 - Large File support: Qt's internals have been modified to support 130 Large Files (> 2GB). QFileDialog will now correctly display and 131 select Large Files. 132 133 - SQL module: Support for prepared query execution and value binding 134 has been added. Among other benefits, this makes it possible to 135 write large BLOBs (> 2 KB) to Oracle databases, and to write Unicode 136 strings to SQL Server databases. 137 138 139 Build process 140 ------------- 141 The build process has been improved: 142 143 - The configure script does not need QTDIR to be set anymore. 144 145 146 **************************************************************************** 147 * Library * 148 **************************************************************************** 149 150 New classes 151 ================== 152 153 - QBackInsertIterator 154 - QEventLoop 155 - QIconFactory 156 - QMutexLocker 157 - QSyntaxHighlighter 158 159 160 QAction 161 ------------------ 162 New functions: 163 void setVisible( bool ) 164 bool isVisible() const 165 166 167 QCanvas 168 ------------------ 169 New functions: 170 void invalidate() 171 bool isValid() const 172 173 174 QColorDialog 175 ------------------ 176 New functions: 177 static void setStandardColor( int, QRgb ) 178 179 180 QAccel 181 ------------------ 182 New signals: 183 void activatedAmbiguously( int id ) 184 185 186 QApplication 187 ------------------ 188 The event loop has been moved to the QEventLoop class, making it 189 easier to integrate other toolkits with Qt. 190 191 New functions: 192 QEventLoop *eventLoop() const 193 void setEventLoop( QEventLoop * ) 194 QString sessionKey() const 195 196 197 QClipboard 198 ------------------ 199 New functions: 200 void clear( Mode mode ) 201 bool supportsSelection() const 202 bool ownsSelection() const 203 bool ownsClipboard() const 204 QString text( Mode mode ) const 205 QString text( QCString& subtype, Mode mode ) const 206 void setText( const QString &, Mode mode ) 207 QMimeSource *data( Mode mode ) const 208 void setData( QMimeSource*, Mode mode ) 209 QImage image( Mode mode ) const 210 QPixmap pixmap( Mode mode ) const 211 void setImage( const QImage &, Mode mode ) 212 void setPixmap( const QPixmap &, Mode mode ) 213 214 215 QDesktopWidget 216 ------------------ 217 New functions: 218 const QRect& screenGeometry( QWidget *widget ) const 219 const QRect& screenGeometry( const QPoint &point ) const 220 const QRect& availableGeometry( int screen ) const 221 const QRect& availableGeometry( QWidget *widget ) const 222 const QRect& availableGeometry( const QPoint &point ) const 223 224 225 QFileDialog 226 ------------------ 227 Large Files (> 2GB) are now correctly displayed and selected. 228 229 230 QFileInfo 231 ------------------ 232 QFileInfo now supports Large Files (> 2GB) internally. To maintain 233 binary compatibility the QFileInfo API cannot be adapted before Qt 4 234 and will truncate file sizes and offsets to 4 GB. 235 236 New functions: 237 bool isHidden() const 238 239 240 QFile 241 ------------------ 242 QFile now supports Large Files (> 2GB) internally. To maintain binary 243 compatibility the QFile API cannot be adapted before Qt 4 and will 244 truncate file sizes and offsets to 4 GB. 245 246 247 QDir 248 ------------------ 249 QDir now supports Large Files (> 2GB). 250 251 252 QImEvent 253 ------------------ 254 New functions: 255 in selectionLength() const 256 257 258 QIconSet 259 ------------------ 260 New functions: 261 void installIconFactory( QIconFactory *factory ) 262 263 264 QImage 265 ------------------ 266 New functions: 267 static QImage fromMimeSource( const QString& abs_name ) 268 269 270 QMetaObject 271 ------------------ 272 New functions: 273 QStrList enumeratorNames( bool super ) const 274 int numEnumerators( bool super ) const 275 static bool hasMetaObject( const char *class_name ) 276 277 278 QMenuData 279 ------------------ 280 New functions: 281 bool isItemVisible( int id ) const 282 void setItemVisible( int id, bool visible ) 283 Both functions are inherited by QMenuBar and QPopupMenu 284 285 286 QPaintDevice 287 ------------------ 288 New functions (x11 only): 289 static Qt::HANDLE x11AppRootWindow() 290 static int x11AppDepth( int screen ) 291 static int x11AppCells( int screen ) 292 static Qt::HANDLE x11AppRootWindow( int screen ) 293 static Qt::HANDLE x11AppColormap( int screen ) 294 static void *x11AppVisual( int screen ) 295 static bool x11AppDefaultColormap( int screen ) 296 static bool x11AppDefaultVisual( int screen ) 297 static int x11AppDpiX( int ) 298 static int x11AppDpiY( int ) 299 static void x11SetAppDpiX( int, int ) 300 static void x11SetAppDpiY( int, int ) 301 302 303 QPicture 304 ------------------ 305 New functions: 306 void setBoundingRect( const QRect &r ) 307 308 309 QPixmap 310 ------------------ 311 New functions: 312 bool hasAlpha() const 313 static QPixmap fromMimeSource( const QString& abs_name ) 314 315 316 QPrinter 317 ------------------ 318 New functions: 319 void setMargins( uint top, uint left, uint bottom, uint right ) 320 void margins( uint *top, uint *left, uint *bottom, uint *right ) const 321 322 Improvements: 323 Handle masked images and pixmaps correctly. Add code to handle 324 asymmetrical printer margins correctly. 325 326 327 QSessionManager 328 ------------------ 329 New functions: 330 QString sessionKey() const 331 332 333 QStyleOption 334 ------------------ 335 New functions: 336 QStyleOption( QCheckListItem* i ) 337 QCheckListItem* checkListItem() const 338 339 New enums values: 340 PE_CheckListController, PE_CheckListIndicator, 341 PE_CheckListExclusiveIndicator, PE_PanelGroupBox 342 CE_MenuBarEmptyArea 343 CE_DockWindowEmptyArea 344 PM_CheckListButtonSize 345 CT_TabBarTab, CT_Slider, CT_Header, CT_LineEdit 346 SH_GroupBox_TextLabelVerticalAlignment 347 348 349 QThread 350 ------------------ 351 New functions: 352 void terminate() 353 354 355 QTranslator 356 ------------------ 357 New functions: 358 bool load( const uchar *data, int len ) 359 360 361 QVariant 362 ------------------ 363 New functions: 364 QVariant( const QPen& ) 365 const QPen toPen() const 366 QPen& asPen() 367 bool isNull() const 368 369 New enum values: 370 KeySequence, Pen 371 372 373 QWidget 374 ------------------ 375 All top-level widgets will now try to find an appropriate application 376 icon when they're not given one, trying in this order 377 1. Parent widget's icon 378 2. Top-level widget's icon 379 3. Application main widget's icon 380 381 New functions: 382 bool isFullScreen() const 383 void setSizePolicy( QSizePolicy::SizeType hor, QSizePolicy::SizeType ver, bool hfw = FALSE ) 384 385 New enum values: 386 AncestorOrigin 387 388 389 QWMatrix 390 ------------------ 391 Two different transformation modes for painter transformations are now 392 available. See the QWMatrix documentation for details. 393 394 New functions: 395 QPointArray mapToPolygon( const QRect &r ) const 396 double det() const 397 static void setTransformationMode( QWMatrix::TransformationMode m ) 398 static TransformationMode transformationMode() 399 400 New enums: 401 TransformationMode { Points, Areas } 402 403 404 QFtp 405 ------------------ 406 While still remaining a subclass of QNetworkProtocol, QFtp can be now 407 used directly for more advanced FTP operations. The QFtp documentation 408 provides details of the extensions to the API. 409 410 411 QHttp 412 ------------------ 413 While still remaining a subclass of QNetworkProtocol, QHttp can be now 414 used directly for more advanced HTTP operations. The QHttp 415 documentation provides details of the extensions to the API. 416 417 Related new classes: 418 QHttpHeader 419 QHttpResponseHeader 420 QHttpRequestHeader 421 422 423 QSqlDriver 424 ------------------ 425 New enum values: 426 Unicode, PreparedQueries, OracleBindingStyle, ODBCBindingStyle 427 428 429 QSqlQuery 430 ------------------ 431 New functions: 432 bool isForwardOnly() const 433 void setForwardOnly( bool forward ) 434 bool exec() 435 bool prepare( const QString& query ) 436 void bindValue( const QString& placeholder, const QVariant& val ) 437 void bindValue( int pos, const QVariant& val ) 438 void addBindValue( const QVariant& val ) 439 440 441 QTableSelection 442 ------------------ 443 New functions: 444 QTableSelection( int start_row, int start_col, int end_row, int end_col ) 445 446 447 QTable 448 ------------------ 449 New properties: 450 int numSelections 451 452 New functions: 453 void selectCells( int start_row, int start_col, int end_row, int end_col ) 454 void selectRow( int row ) 455 void selectColumn( int col ) 456 void updateHeaderStates() 457 void setRowLabels( const QStringList &labels ) 458 void setColumnLabels( const QStringList &labels ) 459 460 461 QCString 462 ------------------ 463 New functions: 464 QCString &replace( char c, const char *after ) 465 QCString &replace( const char *, const char * ) 466 QCString &replace( char, char ) 467 468 New global functions: 469 QByteArray qCompress( const uchar* data, int nbytes ) 470 QByteArray qUncompress( const uchar* data, int nbytes ) 471 QByteArray qCompress( const QByteArray& data ) 472 QByteArray qUncompress( const QByteArray& data ) 473 Improvements: 474 Speed optimisations in lots of the old search and replace 475 functions. 476 477 478 QDate 479 ------------------ 480 New functions: 481 int weekNumber( int *yearNum = 0 ) const 482 static QDate currentDate( Qt::DateTimeSpec ) 483 484 485 QTime 486 ------------------ 487 New functions: 488 static QTime currentTime( Qt::DateTimeSpec ) 489 490 491 QDateTime 492 ------------------ 493 New functions: 494 static QDateTime currentDateTime( Qt::DateTimeSpec ) 495 496 497 QPtrList 498 ------------------ 499 New functions: 500 bool replace( uint i, const type *d ) 501 502 503 QRegExp 504 ------------------ 505 New functions: 506 QString errorString() 507 static QString escape( const QString& str ) 508 int numCaptures() const 509 510 511 QSettings 512 ------------------ 513 New functions: 514 QSettings( Format format ) 515 void setPath( const QString &domain, const QString &product, Scope = User ) 516 void beginGroup( const QString &group ) 517 void endGroup() 518 void resetGroup() 519 QString group() const 520 521 New enums: 522 Format { Native = 0, Ini } 523 Scope { User, Global } 524 525 526 QChar 527 ------------------ 528 Updated Unicode tables to Unicode-3.2 529 530 531 QString 532 ------------------ 533 New functions: 534 QString &append( const QByteArray & ) 535 QString &append( const char * ) 536 QString &prepend( const QByteArray & ) 537 QString &prepend( const char * ) 538 QString &remove( QChar c ) 539 QString &remove( char c ) 540 QString &remove( const QString & ) 541 QString &remove( const QRegExp & ) 542 QString &remove( const char * ) 543 QString &replace( uint index, uint len, QChar ) 544 QString &replace( uint index, uint len, char c ) 545 QString &replace( QChar c, const QString & ) 546 QString &replace( char c, const QString & after ) 547 QString &replace( const QString &, const QString & ) 548 QString &replace( QChar, QChar ) 549 QString &operator+=( const QByteArray &str ) 550 QString &operator+=( const char *str ) 551 static QString fromUcs2( const unsigned short *ucs2 ) 552 const unsigned short *ucs2() const 553 554 Improvements: 555 find(), findRev() and contains() use either a fast hashing 556 algorithm (for short strings) or an optimized Boyer-Moore 557 implementation for long strings. Lots of smaller performance 558 optimisations. 559 560 561 QTextStream 562 ------------------ 563 New functions: 564 QTextCodec *codec() 565 566 567 QTimeEdit 568 ------------------ 569 New properties: 570 Display display 571 572 New functions: 573 uint display() const 574 void setDisplay( uint ) 575 576 New enums: 577 Display { Hours, Minutes, Seconds, AMPM } 578 579 580 QFrame 581 ------------------ 582 New enum values: 583 GroupBoxPanel 584 585 586 QGroupBox 587 ------------------ 588 New properties: 589 bool flat 590 591 New functions: 592 bool isFlat() const 593 void setFlat( bool b ) 594 595 596 QListBox 597 ------------------ 598 New functions: 599 QListBoxItem* selectedItem() const 600 601 602 QListView 603 ------------------ 604 New functions: 605 int sortColumn() const 606 607 608 QSlider 609 ------------------ 610 New functions: 611 void addLine() ( as slot) 612 void subtractLine() (as slot) 613 614 615 QTextBrowser 616 ------------------ 617 New functions: 618 void sourceChanged( const QString& ) 619 void anchorClicked( const QString&, const QString& ) 620 621 622 QTextEdit 623 ------------------ 624 QTextEdit offers another TextFormat (LogText), which is optimized 625 (speed and memory) for displaying large read-only texts normally used 626 for logging. 627 628 New properties: 629 bool allowTabs 630 631 New functions: 632 QString anchorAt( const QPoint& pos, AnchorAttribute a ) 633 void setAllowTabs( bool b ) 634 bool allowTabs() const 635 void insert( const QString &text, uint insertionFlags = CheckNewLines | RemoveSelected ) 636 637 New signals: 638 void clicked( int parag, int index ) 639 void doubleClicked( int parag, int index ) 640 641 New enums: 642 TextInsertionFlags { RedoIndentation, CheckNewLines, RemoveSelected } 643 644 New enum values: 645 AtWordOrDocumentBoundary 646 647 648 QToolButton 649 ------------------ 650 New properties: 651 TextPosition textPosition 652 653 New functions: 654 TextPosition textPosition() const 655 void setTextPosition( TextPosition pos ) 656 657 New enums: 658 TextPosition { Right, Under } 659 660 661 QTooltip 662 ------------------ 663 New functions: 664 static void setWakeUpDelay( int ) 665 666 667 QWhatsThis 668 ------------------ 669 New functions: 670 static void setFont( const QFont &font ) 671 672 673 QDomDocument 674 ------------------ 675 New functions: 676 QString toString( int ) const 677 QCString toCString( int ) const 678 679 680 QFont on X11 681 ------------------ 682 Improvements: 683 Safe handling of huge font sizes. Added support for the new 684 Xft2 font library on XFree-4.x. 685 686 687 QRegion on X11 688 ------------------ 689 Improvements: 690 Removed the 16 bit size limitation 691 692 ****************************************************************************