Bug 163270 – [Win][Direct2D] Add initial Pattern handling implementation

• Component: WebCore Misc.
• Status: RESOLVED FIXED

[Brent Fulgham]

Provide an implementation of the WebKit Pattern concept so that tiled images and border images can be drawn properly.

This get tests in fast/borders/border-image-01.html (and other) to work properly.

[Brent Fulgham]

Created attachment 291233 [details]
Patch

[Simon Fraser (smfr)]

Comment on attachment 291233 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=291233&action=review

> Source/WebCore/platform/graphics/GraphicsContext.h:561
> +    ID2D1Brush* solidStrokeBrush();
> +    ID2D1Brush* solidFillBrush();
> +    ID2D1Brush* patternStrokeBrush();
> +    ID2D1Brush* patternFillBrush();

Can these be const?

[Simon Fraser (smfr)]

Comment on attachment 291233 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=291233&action=review

> Source/WebCore/platform/graphics/win/PatternDirect2D.cpp:58
> +    HRESULT hr = renderTarget->CreateBitmapBrush(tileImage()->nativeImage().get(), &bitmapBrushProperties, &brushProperties, &patternBrush);
> +    ASSERT(hr);
> +    return patternBrush;

What's the ownership model here? Does the caller need to release or destroy the brush? Can we use smart pointers to make this easier?

[Brent Fulgham]

Comment on attachment 291233 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=291233&action=review

>> Source/WebCore/platform/graphics/GraphicsContext.h:561
>> +    ID2D1Brush* patternFillBrush();
> 
> Can these be const?

Yes. I'll fix them.

>> Source/WebCore/platform/graphics/win/PatternDirect2D.cpp:58
>> +    return patternBrush;
> 
> What's the ownership model here? Does the caller need to release or destroy the brush? Can we use smart pointers to make this easier?

You are right -- I should be using the adoptCOM utility function.

[Brent Fulgham]

Committed r207140: <http://trac.webkit.org/changeset/207140>