Lazy load fonts in a FontGroup
The first commit message explains this so I'll just copy it here:
---
This is a step towards fixing #17267. To fix that, we need to be able to
try various different fallback fonts in turn, which would become
unweildy with the prior eager-loading strategy.
Prior to this change, FontGroup loaded up all Font instances, including
the fallback font, before any of them were checked for the presence of
the glyphs we're trying to render.
So for the following CSS:
font-family: Helvetica, Arial;
The FontGroup would contain a Font instance for Helvetica, and a Font
instance for Arial, and a Font instance for the fallback font.
It may be that Helvetica contains glyphs for every character in the
document, and therefore Arial and the fallback font are not needed at
all.
This change makes the strategy lazy, so that we'll only create a Font
for Arial if we cannot find a glyph within Helvetica. I've also
substantially refactored the existing code in the process and added
some documentation along the way.
---
I've added some tests in the second commit, but it required quite a bit of gymnastics to make it possible to write such a test. I'm not sure if the added complexity to the production code is worth it?
On the other hand, having this infrastructure in place may be useful for testing future changes in this area, and also possibly brings us a step closer to extracting a library as discussed in #4901. (What I mean by that is: it reduces coupling between `FontCacheThread` and `FontContext` -- the latter would have a place in such a library, the former wouldn't.)
Source-Repo: https://github.com/servo/servo
Source-Revision: f48dce120dddd8e3d585cfc8bc221faa2726bf6b
Otherwise the log gets spammed with all the individual bytes of the
underlying font file.
Source-Repo: https://github.com/servo/servo
Source-Revision: c0d00e9a6ad08a0a57484036e37f118912295326
Issue #17321. Under Linux, using "font-family: sans-serif" previously
caused Servo to select the "UltraLight" face (of DejaVu Sans). There were
two reasons for this:
1. Font weight was only retrieved from the OS/2 table for bold faces.
This neglected to retrieve the weight information for "lighter than
normal" weight faces. This meant that the UltraLight face appeared as
normal weight, and was selected.
2. Retrieval of font stretch information from the OS/2 table was not
implemented at all.
Source-Repo: https://github.com/servo/servo
Source-Revision: 1ed60100695ec21fe6a023f967258fd018c7dafd
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This PR is the final one in a chain of PRs that tries to make a breaking change to `core-foundation`. This PR makes sure Servo only use the new, not yet released `core-foundation 0.5.0`. The changes in `core-foundation` and why it is not yet published can be read in the comments on this PR: https://github.com/servo/core-foundation-rs/pull/132
Basically we want all of Servo (and deps) to be ready for a fairly swift upgrade from `core-foundation` `0.4.6` to `0.5.0` once it's released, so we don't end up in some state where we depend on, and have to maintain both, for an extended period of time.
This PR is **not ready for merge** in its current state. The following must be done first:
- [x] Merge https://github.com/servo/core-foundation-rs/pull/132 and publish.
- [x] Merge https://github.com/servo/core-graphics-rs/pull/110 and publish.
- [x] Merge https://github.com/servo/core-text-rs/pull/75 and publish.
- [x] Merge https://github.com/servo/cocoa-rs/pull/181 and publish.
- [x] Merge https://github.com/servo/glutin/pull/142 and publish.
- [x] Merge https://github.com/servo/io-surface-rs/pull/60 and publish.
- [x] Merge https://github.com/servo/skia/pull/148.
- [x] Merge https://github.com/servo/rust-azure/pull/282.
- [x] Merge https://github.com/servo/webrender/pull/2299.
- [x] Merge https://github.com/emilio/rust-offscreen-rendering-context/pull/118 and publish.
- [x] Remove the commit in this PR that temporarily adds patch entries to `Cargo.toml`.
- [x] Update Cargo.lock again to not point to my feature branches.
For some of the dependencies I might accidentally have bumped the version as if it was a breaking change when it in fact wasn't. It was a bit messy to figure out all the details in so many and large crates. But hopefully I did not do the inverse, only bump the patch version where the change actually broke something.
Ping @jdm and @nox who have been the ones commenting on the initial PR.
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Source-Revision: e94a25949c924e086e38ef6bdbdc935734415b26
Similar to #19865
r? jdm
Note: Should I squash all the commits into one commit?
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Already in macos, no need cfg target_os
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Source-Revision: d49cb8a47812c0e8ae25643e5437e212f5cbee16
style: Make all keywords CamelCase for consistency.
Source-Repo: https://github.com/servo/servo
Source-Revision: b24778202a4d886a990ee493adfb6851ac4be40c
Prevents crashes from improperly freed memory.
Fixes#19008, fixes#18950, fixes#18949.
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Source-Repo: https://github.com/servo/servo
Source-Revision: e1dac69a4054f208accd18aa443cae19ec7eaf53
Servo currently uses `heapsize`, but Stylo/Gecko use `malloc_size_of`.
`malloc_size_of` is better -- it handles various cases that `heapsize` does not
-- so this patch changes Servo to use `malloc_size_of`.
This patch makes the following changes to the `malloc_size_of` crate.
- Adds `MallocSizeOf` trait implementations for numerous types, some built-in
(e.g. `VecDeque`), some external and Servo-only (e.g. `string_cache`).
- Makes `enclosing_size_of_op` optional, because vanilla jemalloc doesn't
support that operation.
- For `HashSet`/`HashMap`, falls back to a computed estimate when
`enclosing_size_of_op` isn't available.
- Adds an extern "C" `malloc_size_of` function that does the actual heap
measurement; this is based on the same functions from the `heapsize` crate.
This patch makes the following changes elsewhere.
- Converts all the uses of `heapsize` to instead use `malloc_size_of`.
- Disables the "heapsize"/"heap_size" feature for the external crates that
provide it.
- Removes the `HeapSizeOf` implementation from `hashglobe`.
- Adds `ignore` annotations to a few `Rc`/`Arc`, because `malloc_size_of`
doesn't derive those types, unlike `heapsize`.
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r? @jdm
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With `--no-default-features --features default-except-unstable`, more crates can now be compiled on stable Rust. This will help integrate them in rustc’s regression testing and compiler performance benchmarking.
Source-Repo: https://github.com/servo/servo
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Automatically verify that derive() lists are alphabetically ordered #18172
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Source-Revision: 474369618965569407d127b1e8c481e757cc59d3
This patch contains two small changes:
* Fix the font size calculation that is passed to Freetype. This
now matches exactly how Webrender and Gecko calculate font size
to pass to layout.
* Enable light hinting by default for fonts when using Freetype.
We should make this configurable in the future, but this is a
better default than no hinting (and matches what most Linux
distros default to).
These two changes (along with the pending WR update) fix a lot
of the font layout issues on Linux. There is still at least one
remaining issue with hidpi displays on Linux that will be fixed
in a follow up patch.
Source-Repo: https://github.com/servo/servo
Source-Revision: af48b42c57701040d59ac40e25837a444c6ee361
This reverts commit 327e72aa149cdad347196f37bdb64c3afc5ae5e0, reversing
changes made to eec51cdd575cf985bc1ed926c6cb8868f1ba0e0e.
This closes#17642.
Source-Repo: https://github.com/servo/servo
Source-Revision: 3e2f6dc8705d8085578df44a2db598927ba78baf
It doesn't make much sense to store `font-weight` as separate enums, especially given that we would need to support (somehow) arbitrary font weight value when we implement CSS Fonts Level 4.
This PR refactors the `font-weight` a bit to make it store as `u16` directly.
Source-Repo: https://github.com/servo/servo
Source-Revision: f11a922760a08ffb956607d9ab447f8f2a319a25
This is a rebase of #17325 with `[replace]` entries removed, a bunch more dependencies updated, and some more compile fixes. Original work by @Eijebong, thanks a lot!
Source-Repo: https://github.com/servo/servo
Source-Revision: 66c130d55aa0d7af1104c00e93a5bf950f23a383
hi there!
on windows, this change properly scales a font's line height by its size.
previously, line height was not scaled to the font's size at all, which meant line heights become worse and worse the further you scaled away from the font's design size (in either direction, larger or smaller).
this change makes the `line_gap` ratio and size scale with the font size. i've hand checked that the new computed `line_gap` matches the effective heights in chrome and firefox when `line-height = normal` for a bunch of system fonts. (servo's rendering quality on windows is a different story, though).
i believe this also solves #16476.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 8fd7dc80c40440b88f42b8f1036ef67483dd93f0
Libfontconfig dependency is causing huge startup times in Android (20 seconds on each page load!). On other platforms fontconfig caches are already available or can be prebuilt on installation scripts, but this can't be done on Android. Updating libfontconfig dependency doesn't fix the problem either.
This PR gets rid of libfontconfig in Android. It queries available fonts and variations from Android System font configuration files. Android doesn't provide an API to query system fonts until Android O (which is very far from the minimum API right now...)
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I got a panic in Servo when I ran it with `RUST_LOG=debug`, which was due to `FT_Get_Postscript_Name` returning a null pointer.
I'm not sure how to add a test for this, so there is none right now.
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Source-Revision: 5ccb087769fdb5253514e1ea2babd28b21c65907
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This PR:
* updates the browserhtml dep (fixes https://github.com/servo/servo/issues/15255)
* updates the Windows font metric calculation (fixes https://github.com/servo/servo/issues/15698, based on codec-abc https://github.com/servo/servo/pull/15937#issuecomment-286513712)
* may address https://github.com/servo/servo/issues/15933. With this PR, I was not able to repro
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This PR implements downloadable font support for Servo. It depends on new changes in webrender and dwrote, and adds a dependency on the `truetype` crate for pulling out basic font information. The original DirectWrite API does not provide an easy way to query font information direct from a `FontFace` (which is what you create from a `FontFile`). There are new DirectWrite APIs starting with Windows 10 that allow for this, but they are Win 10+ only, and `winapi-rs` does not yet have bindings for those versions of the interfaces (specificially, `IDirectWriteFontFace3`). The way to do this with DW is to go through a lot of pain in creating a custom collection and enumerator, add your font to your custom collection, then query the collection for its properties.
Instead, we just parse the truetype tables directly to pull out the few bits of information that we need. The `truetype` crate is ok, but I discovered some bugs (an update needs to get pushed to crates.io before this will build). It might be more worthwhile to just implement the tiny bit of truetype parsing that we need ourselves in Servo.
I'm guessing there are existing tests for downloadable fonts...
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Source-Revision: 1a7404e38c0f0e9c58487299956bec78589191c7
I just noticed one while writing #14719, and then grepped and couldn't stop.
r? @nox
Source-Repo: https://github.com/servo/servo
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Still needs a bunch of code in net to be converted in order to get more
advantage of this for images and stuff, but meanwhile this should help quite a
bit with #13778.
Still wanted to get this in.
r? @SimonSapin
Source-Repo: https://github.com/servo/servo
Source-Revision: 22aebdf5d41a3509cd6515ccf5edcdf33715a76d
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Reduces msi file size from 102 MB to 94 MB and installation size from 394 MB to 334 MB.
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This PR adds support for DirectWrite text rendering using a thin wrapper for dwrite, as well as similar functionality added to WebRender. In doing so it removes the FreeType dep from the Windows build.
There is still work to be done here, but this is a good starting point for future cleanup and fixes.
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Source-Revision: 796fae4bbe966a4e6e32b01fa44f6123c7162992
Previously, `string-cache` defined:
* An string-like `Atom` type,
* An `atom!("foo")` macro that expands to a value of that type, for a set of strings known at compile-time,
* A `struct Namespace(Atom);` type
* A `ns!(html)` macro that maps known prefixed to `Namespace` values with the corresponding namespace URL.
Adding a string to the static set required making a change to the `string-cache` crate.
With 0.3, the `Atom` type is now generic, with a type parameter that provides a set of static strings. We can have multiple such sets, defined in different crates. The `string_cache_codegen` crate, to be used in build scripts, generates code that defines such a set, a new atom type (a type alias for `Atom<_>` with the type parameter set), and an `atom!`-like macro.
The html5ever repository has a new `html5ever_atoms` crate that defines three such types: `Prefix`, `Namespace`, and `LocalName` (with respective `namespace_prefix!`, `namespace_url!`, and `local_name!` macros). It also defines the `ns!` macro like before.
This repository has a new `servo_atoms` crate in `components/atoms` that, for now, defines a single `Atom` type (and `atom!`) macro. (`servo_atoms::Atom` is defined as something like `type Atom = string_cache::Atom<ServoStaticStringSet>;`, so overall there’s now two types named `Atom`.)
In this PR, `servo_atoms::Atom` is used for everything else that was `string_cache::Atom` before. But more atom types can be defined as needed. Two reasons to do this are to auto-generate the set of static strings (I’m planning to do this for CSS property names, which is the motivation for this change), or to have the type system help us avoid mix up unrelated things (this is why we had a `Namespace` type ever before this change).
Introducing new types helped me find a bug: when creating a new attribute `dom::Element::set_style_attr`, would pass `Some(atom!("style"))` instead of `None` (now `Option<html5ever_atoms::Prefix>` instead of `Option<string_cache::Atom>`) to the `prefix` argument of `Attr::new`. I suppose the author of that code confused it with the `local_name` argument.
---
Note that Stylo is not affected by any of this. The `gecko_string_cache` module is unchanged, with a single `Atom` type. The `style` crate conditionally compiles `Prefix` and `LocalName` re-exports for that are both `gecko_string_cache::Atom` on stylo.
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Source-Repo: https://github.com/servo/servo
Source-Revision: c6e15f8ef244a0f3859489ca7f1c7bcc80181468
`InlineMetrics` has been split into `InlineMetrics` for fragments and
`LineMetrics` for lines. Both structures' fields have been renamed in
order to more clearly delineate the difference between *space* and
*content*. Vertical positioning of fragments has been reworked to take
margins and borders into account only for replaced content.
This patch fixes the `vertical_align_super_a.html` reftest. Servo now
matches the rendering that Gecko and WebKit produce.
Additionally, this includes a test for the popular inline-block
centering technique described here:
https://s.codepen.io/shshaw/fullpage/gEiDt?#Inline-Block
r? @mbrubeck
Source-Repo: https://github.com/servo/servo
Source-Revision: 768a699fa5d822173b2247d6348413d09951a8bb
This uses a (very simple) Win32 API call to enumerate font
families available, and load them as byte buffers.
The font rasterization itself is done by freetype.
This gets Servo + WR + Windows working, but should be improved
by adding a proper implementation that matches fonts correctly
and also uses DirectWrite (or GDI) to handle font rasterization.
Source-Repo: https://github.com/servo/servo
Source-Revision: eb3333eb2f6dbac75ecf23e84cbb12149b3dc969
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#13321
- [X] There are tests for these changes
Source-Repo: https://github.com/servo/servo
Source-Revision: 7d3c7beb215c18f10c03fb394eff9d152313dc59
Remove a TODO around dealing with a failed file operation.
Can we write an automated test for this? I don't really know what font template data is, but this failure seems to be fontconfig-specific...
---
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#12037
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because _____
Source-Repo: https://github.com/servo/servo
Source-Revision: a82d5106bd15d243c8552bf58472e3e9889d1ce2
This is the base PR for MSVC builds of servo and dependent crates. It's got replacements in the Cargo.toml to pull in the right versions, to make sure that crates were properly converted to CMake for all other platforms, not just Windows. (Servo builds with MSVC 2015 with this PR; also with 2013, though a manual change in rust-mozjs to select a different set of bindings is needed.)
This PR isn't quite ready yet, but I want bors-servo to do builds.
Source-Repo: https://github.com/servo/servo
Source-Revision: ec53136863f20b80caf165d2f15e8a77d614536e
This changes a debug assert to a debug log and early return.
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#12081 (github issue number if applicable).
<!-- Either: -->
- [ ] There are tests for these changes OR
- [x] These changes do not require tests because I'm just removing an assertion
<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
Source-Repo: https://github.com/servo/servo
Source-Revision: b3c58f25ef9b9c503dcdbbc74883f702c8494531
