qwt Activity
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Activity for qwt
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Uwe Rathmann modified ticket #389
Why does the curve behave this way when using NaN values?
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Using NaN values to split a curve into segments is not implemened. You have to use one curve per segment or overload drawCurve/drawSeries where you do the segments
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Anonymous created ticket #389
Why does the curve behave this way when using NaN values?
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QwtLegend signal 'clicked' not found
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Anonymous posted a comment on ticket #388
I think I am the problem. I found what I was doing wrong. this does not: //connect(legend, SIGNAL(clicked(const QVariant &itemInfo, int index)), this, SLOT(legendClicked(const QVariant &itemInfo, int index))); this does: //connect(legend, SIGNAL(clicked(const QVariant &, int)), this, SLOT(legendClicked(const QVariant &, int)));
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Anonymous created ticket #388
QwtLegend signal 'clicked' not found
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Incompatybility with Qt 6.8
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DavidXanatos posted a comment on ticket #387
Ah I see... unfortunately Qwt and Qt is easy to mix up... I thought you were asking about the used Qt version, my bad. I checked and it seams I had the 6.2 QWT version, i thought i had the last version... I updated now to 6.3 QWT and the issue is resolved. Thanks
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Nobody suggested that: the other bug reports indicate, that the problem has been fixed in Qwt 6.3.0. And for the record: AFAIR it was about an incompatibility between Qt versions - nothing I could have known in advance when releasing Qwt 6.2.x. So again: are you sure that you are running Qwt 6.3 ?
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well I am using Qt 6.8.3 and I cant just go back to using some outdated Qt because of a bug in Qwt
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rpath fixed opengl seting fixed in playground.pri
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avoid QCheckBox::stateChanged for Qt >= 6.7 where it is deprecated
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Merge branch 'develop' of https://git.code.sf.net/p/qwt/git into develop
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IWYU pragma
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avoid QCheckBox::stateChanged for Qt >= 6.7 where it is deprecated
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rpath fixed opengl seting fixed in playground.pri
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https://sourceforge.net/p/qwt/bugs/374/ https://sourceforge.net/p/qwt/bugs/381/ Are you sure that your are using the correct Qwt version ?
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avoid QCheckBox::stateChanged for Qt >= 6.7 where it is deprecated
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rpath fixed opengl seting fixed in playground.pri
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In that example the legend example/color box is missing only the text is rendered on my platform Windows 11 24h2 Qt 6.8.3 with an older Qt 6.5.1 it works ok
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0xd34df00d posted a comment on ticket #382
Sorry for a long reply. Unfortunately, no — that's beyond my qmake skills, so I wasn't able to easily fix this.
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I can't see this problem on my system ( Linux/X11 ) with the code from https://sourceforge.net/p/qwt/git/ci/qwt-6.3/tree/. Does it happen in your environment with the bode example ?
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Incompatybility with Qt 6.8
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IWYU pragma
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Add support for Include What You Use/Clang Include Cleaner
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done in all active branches
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IWYU pragma
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IWYU pragma
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Did you try this branch: https://sourceforge.net/p/qwt/git/ci/qwt-6.2/tree/ Can't remember about the specific fix - but the qwt-6.2 branch is qwt-6.2.0 + bugfixes ( without new stuff ) only. Please try it first - otherwise let me know and I will dig deeper.
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Anonymous posted a comment on ticket #374
@rathmann Could you send the commit link with this fix?
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Anonymous created ticket #386
QwtPicker trackerPosition
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Anonymous created ticket #385
QwtPlotZoomer inaccuracy
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qwt 6.3.0 with qt6 Issue
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Anonymous posted a comment on ticket #384
oh ok, I was trying to build the qwt using cmake so I just need to do a condition if qt<5.4 include this file if not to not include in the build
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qwt_plot_glcanvas.h is only avaiable when being built for Qt 4/5 - see src/src.pri In the code of the examples it is handled by #ifdefs - using QwtPlotGLCanvas only for Qt < 5.4 Note that the majority of the Qwt applications should be running with Qt6 nowadays.
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Anonymous posted a comment on ticket #384
qwt_plot_glcanvas.h uses QGLWidget, which is removed in Qt6.
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Right - the build/install process is made for using the releases and lacks a couple of steps, when using the code unpreprocessing from the git repository. Needs to be improved ... FYI: building the Qwt tarballs is done by a script you find a shell script admin/sf2package.sh that is intended to work on at least my system. It requires thousands of LateX packages needed by doxygen.
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An API being marked as deprecetad in Qt6 is likely to be removed with Qt7, but is available until the end of the Qt6 series. So as long as you don't explicitely set the compiler flags to disable all deprecated functions it should be no problem. Disabling deprecated functions is useful if you have a specific version of Qt and you want your code being prepared for updating to a higher version. However this is not the case for Qwt - Qwt 6.3.x is supposed to work with Qt 4/5/6 versions from a single...
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An API being marked as deprecetad in Qt6 is likely to be removed with Qt7, but is available until the end of the Qt6 series. So as long as you don't explicitely set the compiler flags to disable all deprecated functions it should be no problem. Disabling deprecated functions is useful if you heve a specific version of Qt and you want your code being prepared for updating to a higher version. However this is not the case for Qwt - Qwt 6.3.x is supposed to work with Qt 4/5/6 versions from a single...
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An API being marked as deprecetad in Qt6 is likely to be removed with Qt7, but is available until the end of the Qt series. So as long as you don't explicitely set the compiler flags to disable all deprecated functions it should be no problem. Disabling deprecated functions is useful if you heve a specific version of Qt and you want your code being prepared for updating to a higher version. However this is not the case for Qwt - Qwt 6.3.x is supposed to work with Qt 4/5/6 versions from a single source...
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Anonymous created ticket #112
Add support for Include What You Use/Clang Include Cleaner
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Anonymous created ticket #384
qwt 6.3.0 with qt6 Issue
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Anonymous created ticket #383
Installation instructions missing
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Marc Weichhold posted a comment on ticket #380
That worked, thank you.
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Could you come up with a patch ?
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Jean Porcherot posted a comment on ticket #379
Hello, Could test a Linux Ubuntu system and a Raspberry Pi (PiOS). The bug is not present. It's a Android only issue, likelly due to Qt repaint bug (there's many in Qt 6.9.0, like https://bugreports.qt.io/browse/QTBUG-133549,...hopefully it will fix this issue if resolved in a next Qt release)
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pkgconfig file created on OS X misses some pathsThe original .pc file only sets Cflags to be Cflags: -I${includedir} -F${libdir}. Since Qwt installs the actual, non-Qt-style-proxy headers to qwt.framework/Headers, projects relying on pkgconfig fail to find those.
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QwtPlotRenderer::FrameWithScale rounding error for the pen width fixed
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QwtPlotRenderer::FrameWithScale rounding error for the pen width fixed
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QwtPlotRenderer::FrameWithScale rounding error for the pen width fixed
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With OpenGL antialiasing is done by multisampling - setting QwtPlotItem::RenderAntialiased does not have an effect in this context. So your problem should be unrelated to the one of the initial report. Qwt 6.3 tries to initialize its internal FBO with the number of samples, that have been set for the canvas ( = QOpenGLWidget::format() ). If this value is 0 multisampling is disabled. I havn't checked how Qwt 6.2 did find its initial sample count but obviously it was different to what Qwt 6.3 is doing....
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I second the concerns about jagged lines with Qwt 6.3.x while using an QwtPlotOpenGLCanvas. In the attachment there are two screenshots, the "good" one was created with Qwt 6.2.0 and Qt 5.14, the second one with Qwt 6.3.1 and Qt 5.14. Please note that the only difference is the different Qwt version, the code is exactly the same.
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b'Uwe Rathmann committed [2a4d2f] on Git ( >= 6.2 )
Merge /u/elderorb/qwt/ branch develop into develop
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allow disabling tests, examples & playgrounds via QWT_NO_TESTS=1, QWT_NO_EXAMPLES=1 & QWT_NO_PLAYGROUND=1
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Generated pkgconfig file for Qt6 requires Qt5 libs
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See https://sourceforge.net/p/qwt/git/merge-requests/7/
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pkgconfig for Qt 5/6 adjustments
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b'Uwe Rathmann committed [01eb98] on Git ( >= 6.2 )
Merge /u/burghart/qwt-pkgconfig-fix/ branch develop into develop
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Fix pkgconfig bug when building with Qt6
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QwtLegend colors do not display with Qt 6.7.0 and Qwt 6.3.0-rc1
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Anonymous posted a comment on ticket #381
I used the wrong version. Instead Qwt 6.3.0-rc1 the version Qwt 6.3.0 is the right one with the fix. You can close this ticket.
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Justin Arthur posted a comment on ticket #353
With the upstream fixes for Qt6 supplying .pc files fixed for a couple years now, I think it's a fine time to merge either @mchinoune's patch in this ticket or @burghart's merge request. The patches approach it slightly differently in variable injection but the effect of either is the same.
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Anonymous created ticket #381
QwtLegend colors do not display with Qt 6.7.0 and Qwt 6.3.0-rc1
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When having too many points to be displayed you can't expect to have much effect from antialiasing. Simply because it will result in many short lines. When zooming in you will have longer lines, where antialiasing will work. When approximating the curve points using QwtWeedingCurveFitter you probably will have better results. However the algo of th fitter is not very fast.
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Anonymous created ticket #380
RenderAntialiased not doing the best thing
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Anonymous posted a comment on ticket #379
Note that adding m_plot->update(); after m_plot->replot(); fixes the issue.
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Anonymous posted a comment on ticket #379
Hello, I had the opportunity to do more testing under Android: 6.2.0 with Qt 6.2.2 works fine 6.3.0 with Qy 6.2.2 works fine 6.2.0 with Qt 6.9.0 has the display issue 6.3.0 with Qt 6.9.0 has the display issue So the issue is really a regression between Qt 6.2.2 and Qt 6.9.0.
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Sorry, posted a reply while not being logged... I had the opportunity to do more testing: Both qwt 6.2.0 and 6.3.0 works fine with Qt 6.2.2 Both qwt 6.2.0 and 6.3.0 has the display issue with Qt 6.9.0 So this is definitely a regression due to Qt upgrade from 6.2.2 to 6.9.0. Jean
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Hello, I'm planning to test Linux later, I'll let you know if the problem is visible here Did not try 6.3 with previous version of Qt, but I doubt it would have the bug as I see a similar issue even when not using Qwt (https://bugreports.qt.io/browse/QTBUG-136220). I's a Qt 6.9.0 issue I bet. But with Qwt, it really makes the whole widget not behave right. The only way I found to have the view be updated was to change phone orientation. Without Qwt, the screen ends up repainting itself when user...
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-is this an Android specific problem or does it also happens on Linux/X11 ? - do you have the same problem when upgrading to Qwt 6.3 without changing the Qt version ?
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Painting issue under Android with Qt 6.9.0
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Anonymous posted a comment on ticket #38
Is there any intention to implement this?
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Just updated my environment to migrate to Qt 6.9 and Qwt 6.3.0 and I can now confirm it's fixed for good. Thanks a lot for this great library, Jean
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According to your comments analogclock.png gets lost during the build/install process. To find out what is going on: please remove "CONFIG+=silent" from qwtbuild.pri Is the file already gone when running qmake ( without install ) or does it happen during the install operation ?
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Stefan Junge posted a comment on ticket #363
Mit Qt 6.8 und Qwt 6.3.0 immer noch das gleiche Problem, keine Änderung gegenüber 2023. C:\Qt\6.8.0\mingw_64\bin\qmake.exe -install qinstall C:\Qt6Lib\qwt-6.3.0\doc\html C:\Qt6Lib\Qwt-6.3.0\doc\html Error copying C:/Qt6Lib/qwt-6.3.0/doc/html/analogclock.png to C:\Qt6Lib\Qwt-6.3.0\doc\html\analogclock.png: Cannot open C:/Qt6Lib/qwt-6.3.0/doc/html/analogclock.png for input mingw32-make[1]: *** [Makefile:510: install_doc] Error 3 mingw32-make[1]: Leaving directory 'C:/Qt6Lib/qwt-6.3.0/doc' mingw32-make:...
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Anonymous created ticket #111
Contour lines for QwtPolarSpectrogram
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Chris Webster modified a comment on ticket #353
Qt6 does have pkg-config files, just not installed in the standard place. On my OSX build machine I have been using: pkg-config --with-path=/usr/local/opt/qt/libexec/lib/pkgconfig --with-path=/usr/local/opt/qwt/lib/pkgconfig until this gets straightened out. But I ran into the Qt6Qwt6.pc file being inaccurate. For now I have manually fixed the .pc file.
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Qt6 does have pkg-config files, just not installed in the standard place. On my OSX build machine I have been using: pkg-config --with-path=/usr/local/opt/qt/libexec/lib/pkgcaonfig --with-path=/usr/local/opt/qwt/lib/pkgconfig until this gets straightened out. But I ran into the Qt6Qwt6.pc file being inaccurate. For now I have manually fixed the .pc file.
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Anonymous posted a comment on ticket #363
I have the same problem. Have you resolved it?
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QwtLegend colors do not display with Qt 6.7.0 and Qwt 6.2.0
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QwtPlotOpenGLCanvas changes curve color
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version bump to 6.3.1
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I tried the attached code with the qwt-6.3 branch with Qt 5.15.9 on my Linux box. In this combination I can't see the issue. Please try the code in your environment with the same Qt/Qwt versions.
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QwtPlotScaleItem updat bug fixed, when changing from logarithmic to
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QwtPlotScaleItem updat bug fixed, when changing from logarithmic to
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QwtPlotScaleItem updat bug fixed, when changing from logarithmic to
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Chris Burghart created merge request #7 on Git ( >= 6.2 )
Fix pkgconfig bug when building with Qt6
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6.3.0 won't build on some platforms
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Of course - fixed in all active branches.
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compiler error when qreal is a float fixed
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compiler error when qreal is a float fixed
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compiler error when qreal is a float fixed
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Anonymous created ticket #378
6.3.0 won't build on some platforms
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QwtPlotOpenGLCanvas changes curve color
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Gregory Shklover posted a comment on ticket #83
Which email address should I use? On Thu, 18 Jul 2024 at 10:56, Uwe Rathmann rathmann@users.sourceforge.net wrote: Please contact me by Email for discussing the direction of this feature. [patches:#83] https://sourceforge.net/p/qwt/patches/83/ patch: add rect curve to render rectangular intervals Status: open Group: Labels: patch Created: Thu May 11, 2023 01:35 PM UTC by Gregory Shklover Last Updated: Sat Jul 06, 2024 06:59 AM UTC Owner: Uwe Rathmann Attachments: qwt-1.patch https://sourceforge.net/p/qwt/patches/83/attachment/qwt-1.patch...
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Please contact me by Email for discussing the direction of this feature.
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patch IntervalCurve performance
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Implementation is available in Qwt 6.3.0
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Anonymous posted a comment on ticket #83
Hi. It appears that the objections to this patch are based on the premise that similar features could be implemented over QPainterPath. But since there are no existing / planned optimizations for generic qpainterpath, there is no immediate substitution... Any drop/accept verdict on this patch? Regards, Gregory.
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