1Release 5.2.3 2=================== 3 4Bug Fixes 5--------- 6Several minor bug fixes 7 8Release 5.2.2 9=================== 10 11Bug Fixes 12--------- 131) QwtSplineCurveFitter 14 Rounding to integers values removed 152) QwtPlot 16 initial size of 200x200 173) QwtPlotPrintFilter, QwtPlot::print 18 handling of background color in QwtPlot::print 194) QwtPlotPrintFilter 20 Problem with colored plot titles fixed 215) QwtPlotItem 22 Crash fixed, when changing the z order of attached items 236) QwtLinearScaleEngine, QwtLog10ScaleEngine 24 Several minor fixes 25 26Release 5.2.1 27=================== 28 29Bug Fixes 30--------- 311) Export declarations removed from qwt_valuelist.h to avoid 32 compiler errors with Qt 4.6 + certain compilers on Windows. 332) QwtScaleDraw 34 Wrong border dist hints for unregular scale divisions fixed 35 Layout calculation for the tick labels fixed. 36 The layout was wrong by 1 pixel for top/left/bottom axes. 37 On a left axis without a title the labels were sometimes cut off. 383) QwtPainter 39 Splits polylines for all pens to avoid a bottleneck of the 40 raster paint engine. 414) QwtScaleWidget 42 Calculation of the colorbar position fixed ( spacing/margin ) 435) QwtPlotCurve 44 Wrong clipping rect fixed 456) QwtPicker 46 QwtPicker::setTrackerFont() fixed. 47 Recursion on the Mac, when constructing the rubberband fixed. 48 Workaround for a Qt3 bug added that is responsible for left aligning 49 all tracker texts to the canvas. 50 51Changes 52------- 531) Project files adopted for symbian 542) qwt.pro 55 CONFIG += ordered added for using make -j 56 CONFIG += silent added 57 58Release 5.2.0 59=================== 60 61Changes 62------- 631) Ported to Qt 4.5.x 642) Scaling of non cosmetic pens (for printing to devices in high resolution) 653) Clipping of polygons for SVG rendering 664) QwtRect removed 67 use QwtClipper instead 685) QwtPlotRescaler 69 Introduced 706) QwtDoubleInterval 71 BorderMode introduced 727) QwtPlotCurve 73 Performance of incremental curve painting ( = draw(from, to) ) improved. 748) QwtLegendItem 75 setIdentfierMode renamed to setIdentifierMode 769) QwtPlotCanvas::replot() introduced 77 code from QwtPlot::replot shifted 7810)QwtPlot 79 drawCanvas(), updateAxes() changed from protected to public 8011)QwtScaleEngine 81 loMargin/hiMargin renamed to lowerMargin/upperMargin 8212)QwtScaleDiv 83 lBound/hBound renamed to lowerBound/upperBound 8413)QwtSpline 85 cofficientA/B/C introduced 8614)QwtDial 87 counter clockwise scales introduced 8815)QwtPlotMarker 89 Vertical text labels 9016)doc/qwt-5.2.0.qch added foe browsing the Qwt docs in the Qt assistant 91 92Bug Fixes 93--------- 941) QwtLinearScaleEngine 95 Rounding problems fixed 962) Again some print layout problems fixed 973) QwtPlotScaleItem: 1 pixel offset fixed 984) QwtPlotSpectrogram, clipping of contour lines 99 against the bounding rect 1005) QwtPlotZoomer::setZoomStack for stacks with unlimited depth 1016) Printing of rotated tick labels 102 103 104Release 5.1.1 105=================== 106 107Bug Fixes 108--------- 1091) Several compiler incompatibilities fixed 1102) DBL_EPSILON removed 111 Using DBL_EPSILON in the calculations of the dials/sliders and the 112 scale engines leads to problems with the inaccuracy of floating points. 113 The behaviour has been reverted to 5.0.x. 1143) QwtSlider/QwtKnob 115 setScaleDraw() fixed. 1164) QwtRect 117 Pointless private declaration removed 118 119Release 5.1.0 120=================== 121 122Changes 123------- 1241) QwtSymbol::copy introduced 125 Now it is possible to use derived symbol classes for curves 1262) QwtPlotScaleItem introduced 127 A new type of plot item for displaying axes on the canvas 1283) QwtClipper added 129 A collection of clipping algos 1304) Using DBL_EPSILON 131 This change allows smaller intervals for sliders/dials 1325) QwtPanner 133 setOrientation() added. 1346) QwtPlot 135 axisStepSize() added 136 clear is virtual now 1377) QwtPlotPrintFilter 138 PrintCanvasBackground splitted into PrintBackground, PrintFrameWithScales 1398) QwtPlotZoomer 140 setZoomStack() added 1419) Changes for the QwtPolar package 142 QwtLegendItemManager introduced 143 QwtMagnifier introduced 14410)Suffix rules added in qwtconfig.pri for different targets for 145 debug/release builds. 146 147Bug Fixes 148--------- 1491. QwtAbstractScaleDraw::setAbstractScaleDraw 150 Reinitialization problem fixed 1512. QwtLegendItem 152 key event handlers fixed 1533. QwtPicker 154 solaris-cc compiler problem fixed 1554. Inaccurate mapping of scale to widget coordinates fixed 1565. QwtPlotCurve::draw 157 Updates for Qt 4.3 added 1586. QwtPlotLayout 159 AlignToCanvas layout calculation fixed 1607. QwtPlot::print 161 Workaround for a QPen initialization problem, 162 when printing to Pdf, added 1638. QwtText 164 Layout of rich text documents fixed 1659. Designer 166 Handling of QwtScaleWidget fixed 16710. realtime example 168 Qt::WA_PaintOutsidePaintEvent added, ScrollZoomer fixed 16911. Several others I have forgotten 170 171Release 5.0.2 172=================== 173 174Bug Fixes 175--------- 1761. QwtPlotCurve::Xfy curve type fixed 1772. Memory leak in QwtLegend fixed 1783. Vertical alignment of rich texts fixed 1794. Workaround for a Qt4 bug added, that produces horrible performance 180 when painting curves with a pen width > 1. 1815. Background for the tracker text of QwtPickers fixed. 182 Improved (faster + better rendered texts) implementation of 183 painting tracker texts, using capabilities of Qt >= 4.3. 1846. QwtArrowButton/QwtCounter: workaround for layout bug ( Qt < 4.3 ) 185 of the Cleanlook style added. 1867. A couple of minor fixes 187 188Changes 189------- 1901. QSvgGenerator added to the bode example 191 192Release 5.0.1 193=================== 194 195Changes 196------- 1971. A couple of problems, when building Qwt fixed. 1982. Displaying Rich Text with Qt 4.x fixed 199 200Release 5.0.0 201=================== 202 203Platforms 204--------- 205Support of Qt3 and Qt4. Qt2 is not supported any longer. 206 207Key features 208------------ 2091. Redesign of plot items. Makes it much easier to develop 210 individual items. 2112. Redesign of the scale classes. All calculations are 212 collected in scale engines, where the application can 213 implement it´s own (f.e log2, or date scales). Now it´s 214 also possible to have individual and completely irregular scales 2153. Redesign of the QwtText classes. The MathML renderer of 216 the Qt4 solutions package is embedded. 217 work for all expressions/situations. 2184. New classes for navigating: QwtPanner, QwtMaginfier 2195. Spectrogram/Contour plots and other classes for displaying 220 raster data added. 221 222Changes 223------- 2245.0.0 is by far the release with the most changes in the history of Qwt 225- too many to make list. 226 227 228Release 4.2.0/0.4.2 229=================== 230 231License 232-------- 233A couple of exceptions to the LGPL with the intention to allow static 234linking with commercial applications. See COPYING. 235 236Key features: 237------------- 2381. Designer plugin 2392. Rich Text support ( f.e. E = m * c<sup>2</sup> ) added. 2403. QwtDial class family added (QwtDial, QwtCompass, QwtAnalogClock, ...) 2414. QwtPicker class family added. Includes QwtPlotZoomer, a complete 242 implementation of recursive zooming. 2435. Device metrics independent printing of QwtPlot. (QPrinter::HighResolution) 2446. QwtPlot::setCurveBrush(), QwtCurve::setBrush() added. The area 245 between curve and baseline will be filled with this brush. 2467. Rotation of axis tick labels added. Very useful for axis with long 247 labels like time scales ... 2488. Added a new abstract QwtData class to plot data from almost any type of 249 container class. 2509. QwtDoublePoint, QwtDoubleSize, QwtDoubleRect double counterparts 251 for QPoint, QSize, QRect. 25210. First steps to support Qtopia. All examples can be compiled and started 253 in the qvfb emulator. 254 255 256Changes: 257--------- 2581. Rewrite of QwtLegend/QwtLegendItem (no QTable anymore) 2592. Each plot item will be painted, even if one of the axis it is 260 attached to is disabled. (like in all other releases beside 0.4.1) 2613. Code for double buffering moved to a new class QwtPaintBuffer. 262 Double buffering can be enabled/disabled now. 2634. QwtPainter, QwtMetricsMap, QwtLayoutMetrics added 264 Hide paint device metrics dependencies. 2655. Layout code rewritten and moved to a new class QwtPlotLayout 266 New layout options canvasMargin(), alignCanvasToScales() 2676. QwtPlot: sizeHint() != minimumSizeHint() 2689. Internal plot data are private again. A couple of get methods 269 added instead. 27010. canvas repaints triggered by paint events. Enables event filtering 27111. QwtPlot::drawCanvasItems added. In opposite to QwtPlot::drawCanvas 272 it is used by the printing code too. 27312. qwtMax, qwtMin, qwtInt mapped to QMAX, QMIN, qRound from qglobal.h 27413. operator= for plot item classes changed. 27514. readOnly property added for sliders. 27615. valid flag added for QwtDblRange 27716. QwtCounter wrap around policy: a counter under- or overflow sets 278 focus to the smallest up/down button and disables counting. 279 A space bar keypress release event re-enables counting. 28017. QwtPushButton added. A class that adds rich text and alignments 281 features to QPushButton, like they are used in QLabel 28218. Clipped painting code moved from QwtCurve to QwtPainter/QwtRect 28319. Canvas cache added to optimize trivial repaints. 28420. QwtPlot::drawCurve added for incremental curve data 28521. QwtSliderBase, readOnly, isValid added 28622. Added filtering of the colors of the title and scales to QwtPrintFilter. 28723. Support of QT_NO_CAST_ASII and QT_NO_COMPAT added 28824. Batch file added for generating Visual Studio project files 28925. QwtPlotCurve, QwtPlotMarker, QwtPlotGrid: more methods public 29026. QwtPlot::setLegendPosition added 29127. A lot of changes I don't remember, ... sorry. 292 293Bugfixes: 294--------- 2951. Autodetection of painter redirection. QPixmap::grabWidget() works 296 with Qwt Widgets again. 2972. QwtSlider: Rounding double->int conversions instead of simple casts. 2983. Bad additional line, connected to the first curve point, when zooming 299 deep, fixed. 3004. QwtMarker: Painting of symbols with width != height fixed 3015. QwtPlot::plotMouseXXX/canvasMap pixel coordinates synced. 302 Now both include the canvas frame. 3036. Layout fixed for QwtScaleDraws without tick labels 3048. Tab focus chains fixed, focus indications added. 3059. Support QwtAutoScale::Inverted when autoScale is off also. 30610. Keyboard control, focus indications added. 30711. Improved QStyle awareness. 30812. Printing of plots with disabled axes 309 310Examples 311-------- 3121. New example linux/cpustat added. Runs also on non linux boxes 313 with dummy values. Beside showing a couple of features that 314 are new with 0.4.1 and 0.4.2, it shows how to extend and customize 315 a QwtPlots. 3162. Added new example event_filter to demonstrate event filtering. 317 This example shows how to add additional controls to the scales, 318 how to translate mouse clicks on the scales into signals and 319 how to move points on the canvas. 3203. realtime example shows how to use scrollbars when zooming 321 322Release 0.4.1 323============ 324 325Changes: 326--------- 3271. Platform independent project files. makefiles directory removed. 3282. RPM spec file template added. 3293. __declspec formalism added for Win32 DLLs. Requires 330 'DEFINES += QWT_DLL' in the .pro file. 3314. QString used for visible texts. 3325. Code for error curves removed. These type of features should be 333 implemented in derived curve classes. 3346. A lot of Qt 1.2 related code removed/replaced. 3357. QwtColorFilter, QwtPixFrame removed. QwtPlotPixFrame renamed 336 to QwtPlotCanvas. 3378. qmodules.h aware. Skips QwtLegend in case of !QT_MODULE_TABLE 3389. All Widgets including QwtPlot optimized to reduce flicker 339 during resize/repaint. 34010. QwtPlot curves/markers can be disabled/enabled to hide/show individual 341 curves without removing the curves from the plot. 34211. Internal maps removed from QwtCurve. QwtCurve::setMap, QwtCurve::setRect, 343 QwtCurve::setRange removed. 344 345Feature additions: 346------------------ 3471. Printing 348 QwtPlot::print prints to any type of QPaintDevice now. 349 Hardcoded printer attributes margin, creator and document title have 350 been removed and must/can be set by the applications now. 351 Printing of background and legends added. QwtColorFilter replaced 352 by QwtPlotPrintFilter. 3532. Layout 354 Many layout fixes and additions. Now all Widgets behave well in 355 QLayouts and provide sensible sizeHints. QwtPlot::setMargin(int) added. 356 Fieldwidth added for QwtPlot::setAxisFormat for application that need 357 range independent width. Title and axis title are Qt:Alignment aware. 358 Qt::WordBreak or multiline titles are possible. 3593. Legend 360 En/Disabling of single curves in the legend added. 361 QwtPlot::setAutoLegend added. 3624. Extensibility 363 QwtPlot::insertCurve + QwtPlot::insertMarker added. Now derived 364 classes of QwtPlotCurve and QwtPlotMarker can be added. Virtual 365 methods provided by QwtPlotCurve for sub-classing. 366 QwtScale::setScaleDraw + QwtPlot::setAxisScaleDraw + some virtual 367 methods for QwtScaleDraw added. Application can implement individual 368 axis labels now. 3695. Sliders 370 QWheelEvent added. The MouseWheel stepsize is controlled by the 371 Scroll Page Size. QwtWheel::setWheelWidth added. QwtKnob::setSymbol, 372 QwtKnob::symbol added. 373 374Bugfixes: 375--------- 3761. Workaround for spontanous curves resulting from overruns 377 when zooming too deep. 3782. Wrong QColorGroup::ColorRole for background colors fixed. 379 Necessary for several non default QStyles. 3803. QwtWheel fixed for vertical wheels. Better color support. 3814. QwtSlider fixed. 3825. Many forgotten others 383 384Release 0.4.0 385============ 386 387Bugfixes: 388--------- 3891. A few occurences of the boolean literal \c false were changed into macro 390 \c FALSE for cross compiler compatibility. 3912. A few local variables in member functions were renamed to suppress 392 warnings issued by really picky compilers about global/class variables 393 being hidden. 3943. In qwt_legend.h, a fully qualified name was used in a class declaration. 395 The HPUX compiler chokes on this (and it's ugly), so it was fixed. 3964. Macro M_2PI is now only defined is this hasn't already been done by the 397 system's clib. 398 399Feature additions: 400------------------ 4011. Qwt now works with Qt3.0. In order to achieve this, QwtLegend now no 402 longer derives from QTableView, but from QTable. This seems to have had 403 quite a few consequences. Kudo's to Uwe Rathmann for uploading this nice 404 fix to the CVS tree. 4052. Getters for a plot's title and title font have been added. 406 407Release 0.3.0 408============ 409 410License: 411-------- 4121. The license has changed from GPL to LGPL. 413 414Bugfixes: 415--------- 4161. The makefiles for win32 caused object files to have extension .o instead of 417 .obj. The 'propagate' file was changed to fix this, using tmake's target 418 platform flag. 4192. There were problems with rint() on win32 platforms. rint() is a BSD call, 420 not even available on all unices. All calls to rint(x) have been replaced 421 by floor(x+.5). 4223. Some static class data members were initialized with the value of other 423 static class data members (from Qt). This caused programs depend on the 424 initialization order of class members. This is now fixed by replacing the 425 static properties by static signleton factories. 4264. When a plot was zoomed and then printed, curves and markers laying outside 427 the plot's scale were still printed. The print() function now uses clipping. 428 429Feature additions: 430------------------ 4311. Multi-line plot titles are now supported: the PostScript document name is 432 not the plot title, with "\n" characters replaced by "--". Geometry 433 management has been changed to support multi-line titles. 4342. In the mailinglist, there were often feature requests for features that 435 were in fact implemented, but not available through QwtPlot's API. Many 436 private members have been made protected or even public, to give users 437 more control. This is poor design, but Qwt will be refactored anyway. 4383. Qwt always displayed floats with 5 digits. This was insufficient for many 439 applications. QwtPlot, QwtScale, QwtAutoScale got some methods to set the 440 label format. This is a printf like format for the numbers at the scales, 441 consisting of 'f' and a precision, or 'g' and the significance. 442 443Build system: 444------------- 4451. The 'makefiles' directory was removed from the cvs tree, and is now only 446 generated for releases. CVS users should have tmake installed, to generate 447 the makefiles themselves. 4482. The 'examples' directory now uses tmake's 'subdirs' template, to iterate 449 over all subdirectories and build all examples with one command. There was 450 allready a makefile for this, but now the process is automated by tmake. 4513. Under unix, the library now gets a proper version number. Current version 452 is 0.3.0. 453 454Documentation: 455-------------- 4561. All documentation is converted to the Doxygen documentation system. The 457 release contains two settings files, 'Doxygen' and 'Doxygen.users', 458 generating a developer's and user's manual, respectively. 459