Bug 25197 – implement orientation and aspect-ratio media queries

• Component: CSS
• Status: RESOLVED FIXED

[Dean Jackson]

http://www.w3.org/TR/css3-mediaqueries/#orientation

We don't yet implement orientation and aspect-ratio

<rdar://problem/6791666>

[Dean Jackson]

Created attachment 29512 [details]
patch

obviously patch needs PNG pixel results too.

[Dean Jackson]

Hmmm.. Firefox reevaluates media queries as the page resizes.

[Dean Jackson]

Created attachment 29524 [details]
patch now does live updating

patch now links up viewport changes to re-evaluation

[Simon Fraser (smfr)]

Comment on attachment 29524 [details]
patch now does live updating

> +static bool orientationMediaFeatureEval(CSSValue* value, RenderStyle*, Frame* frame, MediaFeaturePrefix)
> +{
> +    if (value) {

An early return if !(value) would make the code simpler.

> +        FrameView* view = frame->view();
> +        int width = view->layoutWidth();
> +        int height = view->layoutHeight();
> +        if (width > height) // Square viewport is portrait
> +            return "landscape" == static_cast<CSSPrimitiveValue*>(value)->getStringValue();
> +        else
> +            return "portrait" == static_cast<CSSPrimitiveValue*>(value)->getStringValue();

Don't use 'else' after 'return'.

> +static bool aspect_ratioMediaFeatureEval(CSSValue* value, RenderStyle*, Frame* frame, MediaFeaturePrefix op)
> +{
> +    if (value) {

Prefer early return.

r=me

[Dean Jackson]

Committed r43739
	M	WebCore/ChangeLog
	M	WebCore/css/MediaQueryExp.h
	M	WebCore/css/MediaFeatureNames.h
	M	WebCore/css/MediaQueryEvaluator.cpp
	A	LayoutTests/platform/mac/fast/media/mq-aspect-ratio-expected.checksum
	A	LayoutTests/platform/mac/fast/media/mq-orientation-expected.png
	A	LayoutTests/platform/mac/fast/media/mq-orientation-expected.txt
	A	LayoutTests/platform/mac/fast/media/mq-aspect-ratio-expected.png
	A	LayoutTests/platform/mac/fast/media/mq-orientation-expected.checksum
	A	LayoutTests/platform/mac/fast/media/mq-aspect-ratio-expected.txt
	M	LayoutTests/ChangeLog
	A	LayoutTests/fast/media/mq-orientation.html
	A	LayoutTests/fast/media/mq-aspect-ratio.html

with early return fix, and no else