зеркало из https://github.com/mozilla/gecko-dev.git
116 строки
3.8 KiB
Plaintext
116 строки
3.8 KiB
Plaintext
/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsISupports.idl"
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%{C++
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#include "Units.h"
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/**
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* The display type of nsIScreen belongs to.
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*/
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enum class DisplayType: int32_t {
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DISPLAY_PRIMARY, // primary screen
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DISPLAY_EXTERNAL, // wired displays, such as HDMI, DisplayPort, etc.
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DISPLAY_VIRTUAL // wireless displays, such as Chromecast, WiFi-Display, etc.
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};
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%}
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[scriptable, builtinclass, uuid(826e80c8-d70f-42e2-8aa9-82c05f2a370a)]
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interface nsIScreen : nsISupports
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{
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/**
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* These report screen dimensions in (screen-specific) device pixels
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*/
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void GetRect(out long left, out long top, out long width, out long height);
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void GetAvailRect(out long left, out long top, out long width, out long height);
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%{C++
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mozilla::LayoutDeviceIntRect GetRect() {
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int32_t left = 0, top = 0, width = 0, height = 0;
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GetRect(&left, &top, &width, &height);
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return {left, top, width, height};
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}
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mozilla::LayoutDeviceIntRect GetAvailRect() {
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int32_t left = 0, top = 0, width = 0, height = 0;
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GetAvailRect(&left, &top, &width, &height);
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return {left, top, width, height};
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}
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%}
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/**
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* And these report in desktop pixels
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*/
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void GetRectDisplayPix(out long left, out long top, out long width, out long height);
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void GetAvailRectDisplayPix(out long left, out long top, out long width, out long height);
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%{C++
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mozilla::DesktopIntRect GetRectDisplayPix() {
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int32_t left = 0, top = 0, width = 0, height = 0;
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GetRectDisplayPix(&left, &top, &width, &height);
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return {left, top, width, height};
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}
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mozilla::DesktopIntRect GetAvailRectDisplayPix() {
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int32_t left = 0, top = 0, width = 0, height = 0;
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GetAvailRectDisplayPix(&left, &top, &width, &height);
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return {left, top, width, height};
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}
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%}
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[infallible] readonly attribute long pixelDepth;
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[infallible] readonly attribute long colorDepth;
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/**
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* The number of device pixels per desktop pixel for this screen (for
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* hidpi configurations where there may be multiple device pixels per
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* desktop px and/or per CSS px).
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*
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* This seems poorly named (something like devicePixelsPerDesktopPixel
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* would be more accurate/explicit), but given that it is exposed to
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* front-end code and may also be used by add-ons, it's probably not
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* worth the disruption of changing it.
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*
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* Returns 1.0 if HiDPI mode is disabled or unsupported, or if the
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* host OS uses device pixels as its desktop pixel units (e.g. Windows 7 or
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* GTK/X11). Per-monitor DPI is available in Windows 8.1+, GTK/Wayland or
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* macOS.
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*/
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[infallible] readonly attribute double contentsScaleFactor;
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/**
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* The default number of device pixels per unscaled CSS pixel for this
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* screen. This is probably what contentsScaleFactor originally meant
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* to be, prior to confusion between CSS pixels and desktop pixel units.
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*/
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[infallible] readonly attribute double defaultCSSScaleFactor;
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%{C++
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mozilla::DesktopToLayoutDeviceScale GetDesktopToLayoutDeviceScale() {
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return mozilla::DesktopToLayoutDeviceScale(GetContentsScaleFactor());
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}
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mozilla::CSSToLayoutDeviceScale GetCSSToLayoutDeviceScale() {
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return mozilla::CSSToLayoutDeviceScale(GetDefaultCSSScaleFactor());
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}
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mozilla::CSSToDesktopScale GetCSSToDesktopScale() {
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return GetCSSToLayoutDeviceScale() / GetDesktopToLayoutDeviceScale();
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}
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%}
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/**
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* The DPI of the screen.
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*/
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[infallible] readonly attribute float dpi;
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/** The target screen refresh rate, in Hz, or 0 if unknown */
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[infallible] readonly attribute long refreshRate;
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[infallible] readonly attribute boolean isPseudoDisplay;
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};
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