diff options
| author | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2024-02-29 15:18:19 +0100 |
|---|---|---|
| committer | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2024-03-01 21:16:56 +0100 |
| commit | 367e6ff0b20be47fdc9ddd72866053ec60cbe254 (patch) | |
| tree | 714a74466b797a671a402284f2bbcd544078e526 /src/printsupport | |
| parent | c606739ad1d5cf68449e61db751aa0c65cba3e00 (diff) | |
Fix previewing a preview on reentrance
Make the print preview more tolerant of reentrance by avoiding
previewing itself.
Change-Id: Ia4774cb51bdda7d311414c4e2f9c2bfbed4f187f
Pick-to: 6.7 6.6 6.5
Fixes: QTBUG-122749
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Diffstat (limited to 'src/printsupport')
| -rw-r--r-- | src/printsupport/kernel/qprinter.cpp | 5 | ||||
| -rw-r--r-- | src/printsupport/kernel/qprinter_p.h | 1 | ||||
| -rw-r--r-- | src/printsupport/widgets/qprintpreviewwidget.cpp | 3 |
3 files changed, 9 insertions, 0 deletions
diff --git a/src/printsupport/kernel/qprinter.cpp b/src/printsupport/kernel/qprinter.cpp index c4af319c0c..10c4c681ba 100644 --- a/src/printsupport/kernel/qprinter.cpp +++ b/src/printsupport/kernel/qprinter.cpp @@ -129,6 +129,11 @@ QList<const QPicture *> QPrinterPrivate::previewPages() const return QList<const QPicture *>(); } +bool QPrinterPrivate::previewMode() const +{ + return (previewEngine != nullptr) && (previewEngine == printEngine); +} + void QPrinterPrivate::setPreviewMode(bool enable) { Q_Q(QPrinter); diff --git a/src/printsupport/kernel/qprinter_p.h b/src/printsupport/kernel/qprinter_p.h index 3c6cf711b0..77dd5fb4bc 100644 --- a/src/printsupport/kernel/qprinter_p.h +++ b/src/printsupport/kernel/qprinter_p.h @@ -70,6 +70,7 @@ public: #if QT_CONFIG(printpreviewwidget) QList<const QPicture *> previewPages() const; void setPreviewMode(bool); + bool previewMode() const; #endif void setProperty(QPrintEngine::PrintEnginePropertyKey key, const QVariant &value); diff --git a/src/printsupport/widgets/qprintpreviewwidget.cpp b/src/printsupport/widgets/qprintpreviewwidget.cpp index 97e8f8a7c2..637eb42505 100644 --- a/src/printsupport/widgets/qprintpreviewwidget.cpp +++ b/src/printsupport/widgets/qprintpreviewwidget.cpp @@ -361,6 +361,9 @@ void QPrintPreviewWidgetPrivate::generatePreview() //### emit paintRequested() until the user changes some parameter Q_Q(QPrintPreviewWidget); + // Avoid previewing a preview + if (printer->d_func()->previewMode()) + return; printer->d_func()->setPreviewMode(true); emit q->paintRequested(printer); printer->d_func()->setPreviewMode(false); |