The ceiling was introduced in bug 549190 for improve the consistency of
underline positioning. However, removing ceiling now doesn't seem to
regress the testcases in that bug, probably thanks to improvement in
other part.
The ceiling here causes us to have different font metrics than other
browsers on Windows, and can lead to webcompat issue. We also don't do
this for other backends. So it's probably better removing it in favor
of rounding.
There are several test changes:
* min-intrinsic-with-percents-across-elements.html changes result due to
height of wrapping div in reference page depends on line height, so a
fixed line height is set to work around the issue.
* 368020-1.html changes result because a slightly different line-height
triggers bug 1462514. It is changed to use fixed line-height to work
around the issue.
* 456147.xul is disabled because it compares XUL against HTML page, but
XUL has different approach to position text in its elements than HTML.
Specifically, XUL elements don't seem to respect line height while
HTML elements do. The original line height in the file was probably
chosen to make the HTML match XUL, so it seems to be non-trivial to
fix it in a platform-independent way.
* sizing-orthog-{vlr,vrl}-in-htb-{008,020}.xht fails due to text in <p>
after the testing block shifts 1px up for unknown reason.
MozReview-Commit-ID: 2WJG1AigWl1
--HG--
extra : source : 653c6b7480997c4e1dbead5f0441bc06a0605b7a
The ceiling was introduced in bug 549190 for improve the consistency of
underline positioning. However, removing ceiling now doesn't seem to
regress the testcases in that bug, probably thanks to improvement in
other part.
The ceiling here causes us to have different font metrics than other
browsers on Windows, and can lead to webcompat issue. We also don't do
this for other backends. So it's probably better removing it in favor
of rounding.
There are several test changes:
* min-intrinsic-with-percents-across-elements.html changes result due to
height of wrapping div in reference page depends on line height, so a
fixed line height is set to work around the issue.
* 368020-1.html changes result because a slightly different line-height
triggers bug 1462514. It is changed to use fixed line-height to work
around the issue.
* 456147.xul is disabled because it compares XUL against HTML page, but
XUL has different approach to position text in its elements than HTML.
Specifically, XUL elements don't seem to respect line height while
HTML elements do. The original line height in the file was probably
chosen to make the HTML match XUL, so it seems to be non-trivial to
fix it in a platform-independent way.
* sizing-orthog-{vlr,vrl}-in-htb-{008,020}.xht fails due to text in <p>
after the testing block shifts 1px up for unknown reason.
MozReview-Commit-ID: 2WJG1AigWl1
--HG--
extra : rebase_source : 540e68ffff618a6dc3c14b3702b2c042988061a3
The ceiling was introduced in bug 549190 for improve the consistency of
underline positioning. However, removing ceiling now doesn't seem to
regress the testcases in that bug, probably thanks to improvement in
other part.
The ceiling here causes us to have different font metrics than other
browsers on Windows, and can lead to webcompat issue. We also don't do
this for other backends. So it's probably better removing it in favor
of rounding.
There are several test changes:
* min-intrinsic-with-percents-across-elements.html changes result due to
height of wrapping div in reference page depends on line height, so a
fixed line height is set to work around the issue.
* 368020-1.html changes result because a slightly different line-height
triggers bug 1462514. It is changed to use fixed line-height to work
around the issue.
* 456147.xul is disabled because it compares XUL against HTML page, but
XUL has different approach to position text in its elements than HTML.
Specifically, XUL elements don't seem to respect line height while
HTML elements do. The original line height in the file was probably
chosen to make the HTML match XUL, so it seems to be non-trivial to
fix it in a platform-independent way.
* sizing-orthog-{vlr,vrl}-in-htb-{008,020}.xht fails due to text in <p>
after the testing block shifts 1px up for unknown reason.
MozReview-Commit-ID: 2WJG1AigWl1
--HG--
extra : rebase_source : 6c61fa95a3b01e7b439be46a2498b4f893d8b84b
This rearranges how synthetic-bold use is determined in the font selection
& rendering code. Previously, we would decide during the font-selection
algorithm whether we need to apply synthetic-bold to the chosen face, and
then pass that decision through the fontgroup (storing it in the FamilyFace
entries of the mFonts array there) down to the actual rendering code that
instantiates fonts from the faces (font entries) we've selected.
That became a problem for variation fonts because in the case of a user
font, we may not have downloaded the resource yet, so we just have a "user
font container" entry, which carries the descriptors from the @font-face
rule and will fetch the actual resource when needed. But in the case of a
@font-face rule without a weight descriptor, we don't actually know at
font-selection time whether the face will support "true" bold (via a
variation axis) or not, so we can't reliably make the right decision about
applying synthetic bold.
So we now defer that decision until we actually instantiate a platform font
object to shape/measure/draw text. At that point, we have the requested
style and we also have the real font resource, so we can easily determine
whether fake-bold is required.
(This patch should not result in any visible behavior change; that will
come in a second patch now that the architecture supports it.)
This patch makes sure content processes update their cleartype settings, as well as making sure Moz2D's idea of the ClearType settings are in sync with those of Thebes. If the two differ this can cause graphical glitches.
MozReview-Commit-ID: 94arUnBWoUy
--HG--
extra : rebase_source : d74b702fc63c019ce1c30bdc741ea3ed6da457cd
This patch makes sure content processes update their cleartype settings, as well as making sure Moz2D's idea of the ClearType settings are in sync with those of Thebes. If the two differ this can cause graphical glitches.
MozReview-Commit-ID: 94arUnBWoUy
--HG--
extra : rebase_source : d74b702fc63c019ce1c30bdc741ea3ed6da457cd
AutoTextRun now only needs a DrawTarget instead of an nsRenderingContext, and
similar nsRenderingContext/gfxContext-to-DrawTarget replacements can be
propagated a long way up the call graph. This patch replaces 93 occurrences of
nsRenderingContext and 135 occurrences of gfxContext with DrawTarget; that's
13% of them.
The patch is mostly plumbing changes. A couple of not-entirely-plumbing
changes:
- It adds a comment about the null check in
gfxGlyphExtents::GetTightGlyphExtentsAppUnits().
- A couple of functions simply had an unused gfxContext or nsRenderingContext
parameter removed, e.g. SetLineBreaks().
--HG--
extra : rebase_source : 8f56994bb4d254a86788b17ab2864ebc758a7e6b
