зеркало из https://github.com/mozilla/gecko-dev.git
67 строки
2.5 KiB
Rust
67 строки
2.5 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/. */
|
|
|
|
//! This module contains shared types and messages for use by devtools/script.
|
|
//! The traits are here instead of in script so that the devtools crate can be
|
|
//! modified independently of the rest of Servo.
|
|
|
|
#![crate_name = "style_traits"]
|
|
#![crate_type = "rlib"]
|
|
|
|
#![deny(unsafe_code)]
|
|
|
|
#![cfg_attr(feature = "servo", feature(custom_derive))]
|
|
#![cfg_attr(feature = "servo", feature(plugin))]
|
|
#![cfg_attr(feature = "servo", feature(proc_macro))]
|
|
#![cfg_attr(feature = "servo", feature(rustc_attrs))]
|
|
#![cfg_attr(feature = "servo", feature(structural_match))]
|
|
#![cfg_attr(feature = "servo", plugin(heapsize_plugin))]
|
|
|
|
extern crate app_units;
|
|
#[macro_use]
|
|
extern crate cssparser;
|
|
extern crate euclid;
|
|
#[cfg(feature = "servo")] extern crate heapsize;
|
|
extern crate rustc_serialize;
|
|
#[cfg(feature = "servo")] extern crate serde;
|
|
#[cfg(feature = "servo")] #[macro_use] extern crate serde_derive;
|
|
|
|
/// Opaque type stored in type-unsafe work queues for parallel layout.
|
|
/// Must be transmutable to and from TNode.
|
|
pub type UnsafeNode = (usize, usize);
|
|
|
|
/// One CSS "px" in the coordinate system of the "initial viewport":
|
|
/// http://www.w3.org/TR/css-device-adapt/#initial-viewport
|
|
///
|
|
/// ViewportPx is equal to ScreenPx times a "page zoom" factor controlled by the user. This is
|
|
/// the desktop-style "full page" zoom that enlarges content but then reflows the layout viewport
|
|
/// so it still exactly fits the visible area.
|
|
///
|
|
/// At the default zoom level of 100%, one PagePx is equal to one ScreenPx. However, if the
|
|
/// document is zoomed in or out then this scale may be larger or smaller.
|
|
#[derive(Clone, Copy, Debug)]
|
|
pub enum ViewportPx {}
|
|
|
|
/// One CSS "px" in the root coordinate system for the content document.
|
|
///
|
|
/// PagePx is equal to ViewportPx multiplied by a "viewport zoom" factor controlled by the user.
|
|
/// This is the mobile-style "pinch zoom" that enlarges content without reflowing it. When the
|
|
/// viewport zoom is not equal to 1.0, then the layout viewport is no longer the same physical size
|
|
/// as the viewable area.
|
|
#[derive(Clone, Copy, Debug)]
|
|
pub enum PagePx {}
|
|
|
|
// In summary, the hierarchy of pixel units and the factors to convert from one to the next:
|
|
//
|
|
// DevicePixel
|
|
// / hidpi_ratio => ScreenPx
|
|
// / desktop_zoom => ViewportPx
|
|
// / pinch_zoom => PagePx
|
|
|
|
pub mod cursor;
|
|
#[macro_use]
|
|
pub mod values;
|
|
pub mod viewport;
|
|
|