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Diffstat (limited to 'qt6/src/Mainpage.dox')
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diff --git a/qt6/src/Mainpage.dox b/qt6/src/Mainpage.dox new file mode 100644 index 00000000..da7970d5 --- /dev/null +++ b/qt6/src/Mainpage.dox @@ -0,0 +1,105 @@ +/** +@mainpage The Poppler Qt6 interface library + +The %Poppler Qt6 interface library, libpoppler-qt6, is a library that +allows Qt6 programmers to easily load and render PDF files. The +%Poppler Qt6 interface library uses poppler internally to do its job, +but the Qt6 programmer will never have to worry about poppler +internals. + + +@section help Current Status + +The %Poppler Qt6 interface library is quite stable and working. + +@section refimpl Example Programs + +Examples programs can be found in the qt6/test directory. The %Poppler +Qt6 interface library is also used in the KDE's +document viewer <a href="http://okular.kde.org">Okular</a>. The source files +for Okular's PDF plugin (%Poppler-based) can be found on the git server +of the KDE project, under +<a +href="http://quickgit.kde.org/?p=okular.git&a=tree&f=generators/poppler">this +URL</a>. + + +@section req How to use the Poppler Qt6 interface library in three easy steps + +Programmer who would like to use the %Poppler Qt6 interface library +simply need to add the following line to their C++ source files: + +@code +#include <poppler-qt6.h> +@endcode + + +For using the Qt6 interface on Android, there is an additional step - you must place the following font files in the assets/share/fonts directory of the Android APK: + + - NimbusMonoPS-Regular.otf + - NimbusMonoPS-Bold.otf + - NimbusMonoPS-BoldItalic.otf + - NimbusMonoPS-Italic.otf + - NimbusSans-Regular.otf + - NimbusSans-Bold.otf + - NimbusSans-BoldItalic.otf + - NimbusSans-Italic.otf + - StandardSymbolsPS.otf + - NimbusRoman-Bold.otf + - imbusRoman-BoldItalic.otf + - NimbusRoman-Italic.otf + - NimbusRoman-Regular.otf + - D050000L.otf + +These are used as substitute fonts for the base-14 fonts, and this step is required in order to reliably display documents with unembedded fonts. You can easily find these font files included within GhostScript. + +A PDF document can then be loaded as follows: +@code +QString filename; + +Poppler::Document* document = Poppler::Document::load(filename); +if (!document || document->isLocked()) { + + // ... error message .... + + delete document; + return; +} +@endcode + +Pages can be rendered to QImages with the following commands: + +@code +// Paranoid safety check +if (document == 0) { + // ... error message ... + return; +} + +// Access page of the PDF file +Poppler::Page* pdfPage = document->page(pageNumber); // Document starts at page 0 +if (pdfPage == 0) { + // ... error message ... + return; +} + +// Generate a QImage of the rendered page +QImage image = pdfPage->renderToImage(xres, yres, x, y, width, height); +if (image.isNull()) { + // ... error message ... + return; +} + +// ... use image ... + +// after the usage, the page must be deleted +delete pdfPage; +@endcode + +Finally, don't forget to destroy the document: + +@code +delete document; +@endcode + */ + |