QtPDF not availabel on mac?
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@J-Hilk I checked that QtCharts are now also a pricey addon - but sample project revealed that the module can be freely used under Open Source licence I have, both macOS and Windows. I don't get it. At all.
@artwaw yep, not a fan either, the only thing it will lead to is a reduced user base -> less people who buy the license -> increased prices -> and the vicious cycle is in full motion.
Those are not the only 2 modules, I know for a fact that the QML TreeView component will be pay only as well (for Qt5 at least) a view that is missing for 4 years now, I think, the quick controls 2 one at least
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@artwaw yep, not a fan either, the only thing it will lead to is a reduced user base -> less people who buy the license -> increased prices -> and the vicious cycle is in full motion.
Those are not the only 2 modules, I know for a fact that the QML TreeView component will be pay only as well (for Qt5 at least) a view that is missing for 4 years now, I think, the quick controls 2 one at least
@J-Hilk I wholeheartedly agree with the direction it leads to as you described it.
But I still don't know why the QtPDF doesn't work for me - is it because of the "add on" (but then again Charts work!) or because I missed something.
For now I will just test if I can continue with manual compile process... Or try to use poppler or something (again, manual compile, feels like I am running linux in '90s). It's inconvenient, for not to use stronger phrase. -
@artwaw said in QtPDF not availabel on mac?:
I checked that QtCharts are now also a pricey addon
As far as I remember QtCharts has always been an add-on (or GPL). You really have to be careful with licenses. For commercial software you can use the LGPL-part of Qt. If you are using GPL-modules all your software needs to be under the GPL (meaning everyone who gets your software has also a right to get your source code). So, as long as your software is not GPL you cannot use either QtCharts or QtPDF. (Unless you pay for the commercial license.)
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@artwaw said in QtPDF not availabel on mac?:
I checked that QtCharts are now also a pricey addon
As far as I remember QtCharts has always been an add-on (or GPL). You really have to be careful with licenses. For commercial software you can use the LGPL-part of Qt. If you are using GPL-modules all your software needs to be under the GPL (meaning everyone who gets your software has also a right to get your source code). So, as long as your software is not GPL you cannot use either QtCharts or QtPDF. (Unless you pay for the commercial license.)
@SimonSchroeder Thank you, I am aware of that.
My point is - assuming I am GPL user, which I am indeed - why is QtPDF not visible on Mac while QtCharts is? -
After a quick search I've found that indeed it might still be in Tech Preview. Most notably I have found that for now it seems to be part of QtWebEngine. As far as I remember QtWebEngine needs to be installed separately when using the online installer.
I have also found build instruction for QtPDF: https://wiki.qt.io/QtPDF_Build_Instructions
Maybe this helps if it is not yet included in any installers. -
After a quick search I've found that indeed it might still be in Tech Preview. Most notably I have found that for now it seems to be part of QtWebEngine. As far as I remember QtWebEngine needs to be installed separately when using the online installer.
I have also found build instruction for QtPDF: https://wiki.qt.io/QtPDF_Build_Instructions
Maybe this helps if it is not yet included in any installers.@SimonSchroeder QtPDF is included in stable 5.15.0 as a part of the QtWebEngine. I have that installed and as I wrote the .framework files are present on the disk. That's the whole reason for this post, files are there, Qt doesn't seem to "see" them.
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@SimonSchroeder QtPDF is included in stable 5.15.0 as a part of the QtWebEngine. I have that installed and as I wrote the .framework files are present on the disk. That's the whole reason for this post, files are there, Qt doesn't seem to "see" them.
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Use free poppler for pdf( under GPLv2 or GPLv3) . It is not hard to add it.
Qt uses PDFium. https://wiki.qt.io/Handling_PDF
Poppler seems even better than PDFium
https://hub.alfresco.com/t5/alfresco-content-services-blog/pdf-rendering-engine-performance-and-fidelity-comparison/ba-p/287618 -
Qt PDF is available under both GPLv3 and LGPLv3.
https://marketplace.qt.io/products/qtpdf -
can you run the example?
qt-examples/Qt-5.15.2/pdf/pdfviewerno problem to run it on Ubuntu.
@JoeCFD Thanks for your reply. I can't run the example with error "Unknown modules in Qt: pdf". It is wired why Qt can't find the module, because the Qt5Pdf.dll is in msvc2019_64/bin directory, and Qt5Pdf.lib in msvc2019_64/lib directory. But in msvc2019_64/include directory there is no subfolder named Qt5Pdf.
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You have to install this component
https://wiki.qt.io/QtPDF_Build_Instructions -
You have to install this component
https://wiki.qt.io/QtPDF_Build_Instructions@JoeCFD said in QtPDF not availabel on mac?:
Thanks for your reply. I have complied this component. And it works.
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You have to install this component
https://wiki.qt.io/QtPDF_Build_Instructions@JoeCFD I want develop a pdf application in which I want to edit the pdf file, adding a digit signature in the pdf. What pdf library do you think is proper for the purpose?
I have find PoDoFo, and poppler, QtPdf(seems can't modify pdf). Again thanks for your time. -
@artwaw Hi, sir. I have met the same problem. Did you solve it yet? I use qtcreator on windows, and I have a Qt5Pdf.dll in my bin directory. But when I use QT += pdf, I got the same error, Unknown modules in QT: pdf.
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I am successfully using PoDoFo from vcpkg for manipulating PDF (merging files, adding text content ,etc) files in my Qt 6.1 cmake project. Adding digital signatures with it should be possible ( I have read some code for it in the library but I don't have a use-case currently).
Be sure to install the [fontconfig] version of podofo otherwise you will get unexpected crashes on windows when drawing text with fonts.
Coding with it is quite straightforward although the documentation could be better - but I am no fluent c++ coder. -
MuPDF is the best. PDFium(Qt) is second. XPDF(Poppler) is third. You choose the better one for your app. You need to pay attention to license issue.
