[Okular-devel] Review Request: Call Generator::signalPixmapRequestDone _after_ saving the calculated bounding box

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This review has been submitted with commit edbb4ef9f5aa8f120558b9d4f4b9f68970100c4b by Fabio D'Urso to branch KDE/4.9.

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On July 17, 2012, 10:24 a.m., Fabio D'Urso wrote:
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> http://git.reviewboard.kde.org/r/105600/
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> (Updated July 17, 2012, 10:24 a.m.)
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> 
> Review request for Okular and Albert Astals Cid.
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> Description
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> This patch fixes a bug that causes the extraction of a wrong bounding box.
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> The issue is that, if the request queue is not empty, signalPixmapRequestDone causes a new pixmap request to be started, thus overwriting mPixmapGenerationThread's mCalcBoundingBox before it is read by the if in the next line.
> If the current request had mCalcBoundingBox disabled and the next request enables it, GeneratorPrivate::pixmapGenerationFinished() will think that the current request has mCalcBoundingBox enabled and will set the bounding box to whatever value mPixmapGenerationThread->boundingBox() returns, ie the value left by the last request that actually calculated the bounding box (usually for a different page).
> On the other hand, if the current request has mCalcBoundingBox enabled and the next request disables it, the if will not be taken and the calculated bounding box is discarded.
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> I moved the signalPixmapRequestDone call after the bounding box is saved, so that new requests are started only after all data from mPixmapGenerationThread have been saved.
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> Note: This patch does not reintroduce the issue fixed by 9ea54d72980715fd36927b4d7e7f432091787088, because I'm updating the bounding box after calling Page::setPixmap.
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> This addresses bugs 257370, 292680 and 303622.
>     http://bugs.kde.org/show_bug.cgi?id=257370
>     http://bugs.kde.org/show_bug.cgi?id=292680
>     http://bugs.kde.org/show_bug.cgi?id=303622
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> Diffs
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>   core/generator.cpp 0073943 
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> Diff: http://git.reviewboard.kde.org/r/105600/diff/
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> Testing
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> Bugs 257370, 292680, 303622 seem to be fixed
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> Thanks,
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> Fabio D'Urso
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