karchive and QSaveFile (fwd)

[Boudewijn Rempt]

Hi,

I'm trying to make Krita use QSaveFile instead of the home-grown
mess of temporary files that get copied over the original file
after saving succeeded. The problem is that Krita, like Calligra,
uses KArchive. And KArchive, even when a KZip is created with
an existing QIODevice, decides on its own to call close(), which
is not allowed with QSaveFile.

I've tried to set KZip's io device to 0 just before closing the
kzip, but that means the zip file doesn't get written correctly.
I've got a hack around that... I've made a tiny subclass of KZip:

class SaveZip : public KZip {
public:
    SaveZip(const QString &filename) : KZip(filename) {}
    SaveZip(QIODevice *dev) : KZip(dev) {}
    virtual ~SaveZip() {}
    void resetDevice() {
        closeArchive();
        setDevice(0);
    }
};


And call resetDevice before deleting or closing the kzip instance
in KoStore.

But that's a hack, and I'm now wondering whether to hack QSaveFile's 
close() to just not abort, or add inherits("QSaveFile") checks all 
over KArchive -- or whether there's a third, better option that I've 
missed...

-- 
Boudewijn Rempt | http://www.krita.org, http://www.valdyas.org