Bug 37952 – Create a template for reference-counted Windows GDI handles.

• Component: WebCore Misc.
• Status: RESOLVED FIXED

[Andy Estes]

There currently exists a class called RefCountedHFONT, which wraps a GDI HFONT in a reference-counted container.  There is a need to reference count other GDI handles in the Windows port, so it would be useful to have a generic class that can reference count any GDI handle.

[Andy Estes]

Created attachment 54003 [details]
patch

[WebKit Review Bot]

Attachment 54003 [details] did not pass style-queue:

Failed to run "WebKitTools/Scripts/check-webkit-style" exit_code: 1
WebCore/platform/graphics/cairo/FontPlatformData.h:41:  Alphabetical sorting problem.  [build/include_order] [4]
Total errors found: 1 in 7 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Darin Adler]

Comment on attachment 54003 [details]
patch

This is OK as is, but there is one thing we should improve. The hash function here should be:

    return PtrHash<T>(m_handle);

Once you change it to work that way you can remove the include of StringImpl.h.

If this wasn't all inlined, I would also suggest making a base class, since the only functions in RefCountedGDIHandle that are different based on type are the create() function, the constructor, and the handle() function. But since everything is inlined anyway, I don't think there's any real benefit to doing so.

[Andy Estes]

Committed revision 58045.

[Adam Roben (:aroben)]

Using OwnPtr in the implementation of your new class template would have made things even simpler, and would allow this class template to be used for non-GDI objects.