gecko-dev/servo/components/style_traits/cursor.rs
Nicholas Nethercote 5a62942911 servo: Merge #18938 - Replace all uses of the heapsize crate with malloc_size_of (from nnethercote:bug-1409255); r=SimonSapin
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`.

<!-- Please describe your changes on the following line: -->

---
<!-- 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
- [ ] These changes fix https://bugzilla.mozilla.org/show_bug.cgi?id=1409255

<!-- Either: -->
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because testing is on the Gecko side.

<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->

<!-- 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: 4c538b642e4bdfbf42c522c5a59c258a6d14546e

--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : f9a6feed1088d0b0be2b55d7f0c2ec9c594ac33b
2017-10-18 13:56:05 -05:00

106 lines
3.6 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//! A list of common mouse cursors per CSS3-UI § 8.1.1.
use super::ToCss;
macro_rules! define_cursor {
(
common properties = [
$( $c_css: expr => $c_variant: ident = $c_value: expr, )+
]
gecko properties = [
$( $g_css: expr => $g_variant: ident = $g_value: expr, )+
]
) => {
/// <https://drafts.csswg.org/css-ui/#cursor>
#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, PartialEq)]
#[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
#[repr(u8)]
#[allow(missing_docs)]
pub enum Cursor {
$( $c_variant = $c_value, )+
$( #[cfg(feature = "gecko")] $g_variant = $g_value, )+
}
impl Cursor {
/// Given a CSS keyword, get the corresponding cursor enum.
pub fn from_css_keyword(keyword: &str) -> Result<Cursor, ()> {
match_ignore_ascii_case! { &keyword,
$( $c_css => Ok(Cursor::$c_variant), )+
$( #[cfg(feature = "gecko")] $g_css => Ok(Cursor::$g_variant), )+
_ => Err(())
}
}
/// From the C u8 value, get the corresponding Cursor enum.
pub fn from_u8(value: u8) -> Result<Cursor, ()> {
match value {
$( $c_value => Ok(Cursor::$c_variant), )+
$( #[cfg(feature = "gecko")] $g_value => Ok(Cursor::$g_variant), )+
_ => Err(())
}
}
}
impl ToCss for Cursor {
fn to_css<W>(&self, dest: &mut W) -> ::std::fmt::Result where W: ::std::fmt::Write {
match *self {
$( Cursor::$c_variant => dest.write_str($c_css), )+
$( #[cfg(feature = "gecko")] Cursor::$g_variant => dest.write_str($g_css), )+
}
}
}
}
}
define_cursor! {
common properties = [
"none" => None = 0,
"default" => Default = 1,
"pointer" => Pointer = 2,
"context-menu" => ContextMenu = 3,
"help" => Help = 4,
"progress" => Progress = 5,
"wait" => Wait = 6,
"cell" => Cell = 7,
"crosshair" => Crosshair = 8,
"text" => Text = 9,
"vertical-text" => VerticalText = 10,
"alias" => Alias = 11,
"copy" => Copy = 12,
"move" => Move = 13,
"no-drop" => NoDrop = 14,
"not-allowed" => NotAllowed = 15,
"grab" => Grab = 16,
"grabbing" => Grabbing = 17,
"e-resize" => EResize = 18,
"n-resize" => NResize = 19,
"ne-resize" => NeResize = 20,
"nw-resize" => NwResize = 21,
"s-resize" => SResize = 22,
"se-resize" => SeResize = 23,
"sw-resize" => SwResize = 24,
"w-resize" => WResize = 25,
"ew-resize" => EwResize = 26,
"ns-resize" => NsResize = 27,
"nesw-resize" => NeswResize = 28,
"nwse-resize" => NwseResize = 29,
"col-resize" => ColResize = 30,
"row-resize" => RowResize = 31,
"all-scroll" => AllScroll = 32,
"zoom-in" => ZoomIn = 33,
"zoom-out" => ZoomOut = 34,
]
// gecko only properties
gecko properties = [
"-moz-grab" => MozGrab = 35,
"-moz-grabbing" => MozGrabbing = 36,
"-moz-zoom-in" => MozZoomIn = 37,
"-moz-zoom-out" => MozZoomOut = 38,
]
}