Bug 70852 – Setting up a HiDPI base-level GraphicsContext should be more straightforward for WebKit2

• Component: Layout and Rendering
• Status: RESOLVED FIXED

[Beth Dakin]

Right now there are three places in WebKit2 where we have to set up a GraphicsContext to act as a base-level HiDPI GraphicsContext. Once in DrawingAreaImpl::display() which sets up the context for the main web page. Then twice in WebPage.cpp for snapshotting functions. I wanted to improve those three places so that they set up a HiDPI context in a way that is more straightforward.

[Beth Dakin]

Created attachment 112405 [details]
Patch

[Early Warning System Bot]

Comment on attachment 112405 [details]
Patch

Attachment 112405 [details] did not pass qt-ews (qt):
Output: http://queues.webkit.org/results/10208488

[WebKit Review Bot]

Comment on attachment 112405 [details]
Patch

Attachment 112405 [details] did not pass chromium-ews (chromium-xvfb):
Output: http://queues.webkit.org/results/10209391

[Beth Dakin]

Created attachment 112412 [details]
Another patch

Comment on attachment 112412 [details]
Another patch

View in context: https://bugs.webkit.org/attachment.cgi?id=112412&action=review

> Source/WebCore/platform/graphics/cg/GraphicsContextCG.cpp:1597
> +    scale(FloatSize(deviceScaleFactor, deviceScaleFactor));

A slightly neater way to do this would be to keep this common part in the cross-platform applyDeviceScaleFactor() and have that one call a private platformApplyDeviceScaleFactor() that would have a no-op definition in GraphicsContext.cpp and a CG-specific definition in GraphicsContextCG.cpp, but I think this is okay for now.

[Beth Dakin]

(In reply to comment #5)
> (From update of attachment 112412 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=112412&action=review
> 
> > Source/WebCore/platform/graphics/cg/GraphicsContextCG.cpp:1597
> > +    scale(FloatSize(deviceScaleFactor, deviceScaleFactor));
> 
> A slightly neater way to do this would be to keep this common part in the cross-platform applyDeviceScaleFactor() and have that one call a private platformApplyDeviceScaleFactor() that would have a no-op definition in GraphicsContext.cpp and a CG-specific definition in GraphicsContextCG.cpp, but I think this is okay for now.

Oh, I like that! I'll do that! Thanks for the review, Dan!

[Beth Dakin]

Committed change with revision 98406.