This ensures we don't scale the underlying size of the layer beyond what
is close to the current display size. When box shadows get much larger
than this, they start taking so much time to render that successive
frames grow in scale too fast for any inter-frame reuse to be possible.
With this, we avoid that and no longer get crushed by re-rendering
gigantic box shadows every single frame.
See BZ 1383825
There's considerable cost associated with creating HWA draw targets
which would negate and regress the performance won by it if used for
too small targets (like small spans of text).
This only uses HWA if >= 8K SurfaceAllocationSize to balance HWA draw
target cost with box blur cost.
Only blur one quadrant of a box-shadow and mirror it to the other quadrants.
This applies only if the corners are symmetrical (square corners or equal
corner radii) otherwise we'll fall back to the old method.
I figured I should include the reftest for the sake of completeness, though I have already verified the feature working from the site mentioned in the forum thread that prompted me to look into this in the first place.
Ref: BZ 1331528
Required to have an alpha channel (which in the strange world of graphics seems to refer to transparency, and not experimental code) in WebM videos. Straight port of Firefox 53 implementation, adapted slightly for a couple of patches previously taken without this.
Ref: BZ 1320829
We previously didn't do this because we relied on our anonymous wrapper
to perform transforms. However, that resulted in only the children
transforming, and the frame's cliprect wouldn't be updated,
giving the impression of the z-ordering being wrong.
Also adds reftests from the relevant BZ bug found later.
Resolves#2355
Bug 148624 - only show tooltip when document has focus
Partial Bug 1857513 - Use window activeness rather than document.hasFocus() to display chrome-only tooltips
This also adds a new helper method for checking the type of tokens that will be parsed after the current token, which is useful for determining the unit of values inside calc() functions.
Partially based on 8a0897d23f
Vim control lines were re-introduced or not entirely cleaned up.
This nukes them again.
Removing from embedding, extensions, gfx, hal, ipc, layout, mailnews,
media and memory. More to come.
Based on Mozilla bugs 1119128, 1285533, and 1421964.
gfx.font_rendering.fontconfig.fontlist.enabled is no longer available.
gfxFontconfigUtils.h still exists, and will be removed in another commit. Just
need more research on bug 1385029.
Tag #1862
We need to use StyleChildrenIterator which iterates over them, instead.
This is a bit of a hack but we can't always have our cake.
We need to be a bit careful though, since ::before and ::after are owned
by their own frame, and thus could be unbound from the tree or even dead
after removing the frame.
This basically ports bugs 1435566 and 1438467
Pseudo-classes with a forgiving selector list argument are allowed to follow a pseudo-element, but must treat any selector that is not of the same type as invalid. It doesn't make any sense, but that's the behavior of other tainted browsers.
- Check against all selector parts and not the leftmost selector only for ::slotted()
- Walk rules for ::slotted() regardless if the shadow root is opened/closed
- Ensure that ::slotted() rules are walked in the right order
- Fix ::slotted inheritance from topmost shadow root
- Block slot elements from being matched by ::slotted
- Ensure ::slotted() is serialized as a pseudo-element
- Add pref to control whether the pseudo-class is enabled
Previously, we'd match :host despite the element having a different shadow root from the one that we currently have. Also, there's a test where :host should be blocked from matching if it is a descendant of an explicit universal selector.
