This property accepts a color. It's inherited and defaults to transparent.
Its value is respected on macOS when rendering text into transparent pixels.
This property should be used for text that is placed on top of "vibrant"
-moz-appearances, in order to achieve high quality text rendering for such text.
In most cases, the property should be set to a named system color; an upcoming
patch in this patch series will add one such color for each vibrant
-moz-appearance value.
However, in some cases it can also be useful to use a custom color: If text
is rendered into an intermediate surface, for example because a mask is applied
to it, and the background color behind that intermediate surface is known, then
this property can be set to that background color in order to achieve subpixel
AA for the text inside the mask effect. In that case, the font smoothing
background color is respected because text is rendered into transparent pixels
*inside the intermediate surface*. At the moment, the only example of that use
case is the text of the active tab in the state where the text is overflowing.
MozReview-Commit-ID: D98qQnxoFaq
In Stylo, we read font related user prefs to set the default font size only
if we set 'font-size' property. However, users are allowed to set their
preferred minimum font size through the user prefs, even without using
'font-size' property.
Gecko used to do this in nsRuleNode::SetDefaultOnRoot, which calles the
default constructor of nsStyleFont and does the minimum font size applying
right after. Moving the minimum font size applying into the default
constructor of nsStyleFont shoud be no harm to Gecko, but makes Stylo
share the same code path and behave the same.
MozReview-Commit-ID: BDcJX92o0uR
If we'll be reconstructing frames for the subtree in question, then we'll also
be reflowing and repainting that whole subtree. So all of this function's
other changehints become unnecessary and redundant.
MozReview-Commit-ID: 7R9lARBU7vZ
When the counter style in the style struct changes, CalcDifference
would return ReconstructFrame, which should cause corresponding use
node to be reconstructed. That means a use node with retired counter
style should always be destroyed in the next flush, so it makes no
sense to reset them anymore.
However, we would still need to mark counter lists dirty because
otherwise their content may not get update when there are changes to
counter styles which are still valid.
MozReview-Commit-ID: FnBPx81StzG
Previously, when these properties changed, we'd only send change hints to
recompute overflow areas & trigger DLBI. If the outline was always outside of
the element's border box, this old strategy was generally OK, because the
outline tweak would cause a change to the overflow areas' size, and that would
invalidate the changed area via DLBI & trigger a repaint.
However, for outlines that are *inside* of the element (via negative
'outline-offset'), these change hints were not sufficient, because tweaks to
the outline width & offset will NOT affect the size of the element's overflow
areas and will not trigger any DLBI invalidation.
So in order to correctly handle these changes, we really need to request a
repaint of the affected element, since some piece of the element may need to be
repainted even if it's not changing in size.
MozReview-Commit-ID: J4KGUHrJ09U
We will actually hit the assertion in the destructor of
StyleImageRequestCleanupTask after the change above:
MOZ_ASSERT(mImageValue->mRequests.Count() == 0 || NS_IsMainThread()
"If mImageValue has any mRequests, we need to run on main "
"thread to release ImageValues!");
From Part 6 to Part 9, we do put a request immediately after the creation of an
ImageValue, so even if a nsStyleImageReqeust is not resolved, we still need to
destruct mImageValue on the main thread.
MozReview-Commit-ID: F812iySXbh6
This patch implement several things:
1. Implement a new constructor for nsStyleImageRequest to receive an existing
ImageValue from the caller.
2. Implement Gecko_ImageValue_Create to allow stylo to create a gecko::ImageValue
object.
3. Implement Gecko_SetXXXXImageValue to allow stylo to pass a created ImageValue
back to gecko.
MozReview-Commit-ID: 1SbW5w8FSV2
