Review Request 128397: KIconEngine: Fix QIcon::hasThemeIcon always returning true

[Olivier Goffart]

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src/kiconengine.cpp (line 164)
<https://git.reviewboard.kde.org/r/128397/#comment65647>

    Ideally, one would want that even if compiled with older Qt, this works as Qt is upgraded.
    
    The way to do that would be to hardcode the numerical value of QIconEngine::IsNullHook when compiling with older Qt.


- Olivier Goffart


On July 7, 2016, 9:55 p.m., David Rosca wrote:
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/128397/
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> (Updated July 7, 2016, 9:55 p.m.)
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> 
> Review request for KDE Frameworks and Olivier Goffart.
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> Repository: kiconthemes
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> Description
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> QIcon::hasThemeIcon(name) checks if QIcon::name() == name, so icon engine must return empty string when icon doesn't exist.
> Also implement IsNullHook for Qt 5.7. Comes with autotest.
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> Diffs
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>   autotests/CMakeLists.txt 0c7de50 
>   autotests/kiconengine_unittest.cpp PRE-CREATION 
>   src/kiconengine.h 21a63f5 
>   src/kiconengine.cpp 3ccc7d1 
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> Diff: https://git.reviewboard.kde.org/r/128397/diff/
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> Testing
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> Issue was reported in https://bugreports.qt.io/browse/QTBUG-54595
> Also similar issue https://bugs.kde.org/show_bug.cgi?id=365031 (there is a check for hasThemeIcon before using the icon, but it returns true which results in invalid icon name -> no icon).
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> Thanks,
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> David Rosca
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>

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